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Update avcodec to 20080825 

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27536 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
David McPaul 2008-09-15 13:51:33 +00:00
parent 7052b75ea5
commit ed4a799c2c
55 changed files with 6596 additions and 0 deletions
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35
src/add-ons/media/plugins/avcodec/libavutil/Jamfile Normal file
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SubDir HAIKU_TOP src add-ons media plugins avcodec libavutil ;
# filter warnings we don't want here
TARGET_WARNING_CCFLAGS = [ FFilter $(TARGET_WARNING_CCFLAGS)
: -Wall -Wmissing-prototypes -Wsign-compare -Wpointer-arith ] ;
SubDirCcFlags -fomit-frame-pointer -DPIC ;
SubDirCcFlags -DHAVE_AV_CONFIG_H=1 ;
StaticLibrary libavutil.a :
adler32.c
aes.c
base64.c
crc.c
des.c
fifo.c
integer.c
intfloat_readwrite.c
lfg.c
lls.c
log.c
lzo.c
mathematics.c
md5.c
mem.c
pca.c
random.c
rational.c
rc4.c
sha1.c
softfloat.c
string.c
tree.c
utils.c
;

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src/add-ons/media/plugins/avcodec/libavutil/adler32.c Normal file
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/* adler32.c -- compute the Adler-32 checksum of a data stream
* This is a modified version based on adler32.c from the zlib library.
*
* Copyright (C) 1995 Mark Adler
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
#include "common.h"
#include "adler32.h"
#define BASE 65521L /* largest prime smaller than 65536 */
#define DO1(buf) {s1 += *buf++; s2 += s1;}
#define DO4(buf) DO1(buf); DO1(buf); DO1(buf); DO1(buf);
#define DO16(buf) DO4(buf); DO4(buf); DO4(buf); DO4(buf);
unsigned long av_adler32_update(unsigned long adler, const uint8_t *buf, unsigned int len)
{
unsigned long s1 = adler & 0xffff;
unsigned long s2 = adler >> 16;
while (len>0) {
#ifdef CONFIG_SMALL
while(len>4 && s2 < (1U<<31)){
DO4(buf); len-=4;
#else
while(len>16 && s2 < (1U<<31)){
DO16(buf); len-=16;
#endif
}
DO1(buf); len--;
s1 %= BASE;
s2 %= BASE;
}
return (s2 << 16) | s1;
}
#ifdef TEST
#include "log.h"
#define LEN 7001
volatile int checksum;
int main(void){
int i;
char data[LEN];
av_log_level = AV_LOG_DEBUG;
for(i=0; i<LEN; i++)
data[i]= ((i*i)>>3) + 123*i;
for(i=0; i<1000; i++){
START_TIMER
checksum= av_adler32_update(1, data, LEN);
STOP_TIMER("adler")
}
av_log(NULL, AV_LOG_DEBUG, "%X == 50E6E508\n", checksum);
return 0;
}
#endif

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src/add-ons/media/plugins/avcodec/libavutil/adler32.h Normal file
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/*
* copyright (c) 2006 Mans Rullgard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_ADLER32_H
#define FFMPEG_ADLER32_H
#include <stdint.h>
#include "common.h"
unsigned long av_adler32_update(unsigned long adler, const uint8_t *buf,
unsigned int len) av_pure;
#endif /* FFMPEG_ADLER32_H */

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src/add-ons/media/plugins/avcodec/libavutil/aes.c Normal file
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/*
* copyright (c) 2007 Michael Niedermayer <michaelni@gmx.at>
*
* some optimization ideas from aes128.c by Reimar Doeffinger
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "common.h"
#include "aes.h"
typedef struct AVAES{
// Note: round_key[16] is accessed in the init code, but this only
// overwrites state, which does not matter (see also r7471).
uint8_t round_key[15][4][4];
uint8_t state[2][4][4];
int rounds;
}AVAES;
const int av_aes_size= sizeof(AVAES);
static const uint8_t rcon[10] = {
0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36
};
static uint8_t sbox[256];
static uint8_t inv_sbox[256];
#ifdef CONFIG_SMALL
static uint32_t enc_multbl[1][256];
static uint32_t dec_multbl[1][256];
#else
static uint32_t enc_multbl[4][256];
static uint32_t dec_multbl[4][256];
#endif
static inline void addkey(uint64_t dst[2], uint64_t src[2], uint64_t round_key[2]){
dst[0] = src[0] ^ round_key[0];
dst[1] = src[1] ^ round_key[1];
}
static void subshift(uint8_t s0[2][16], int s, uint8_t *box){
uint8_t (*s1)[16]= s0[0] - s;
uint8_t (*s3)[16]= s0[0] + s;
s0[0][0]=box[s0[1][ 0]]; s0[0][ 4]=box[s0[1][ 4]]; s0[0][ 8]=box[s0[1][ 8]]; s0[0][12]=box[s0[1][12]];
s1[0][3]=box[s1[1][ 7]]; s1[0][ 7]=box[s1[1][11]]; s1[0][11]=box[s1[1][15]]; s1[0][15]=box[s1[1][ 3]];
s0[0][2]=box[s0[1][10]]; s0[0][10]=box[s0[1][ 2]]; s0[0][ 6]=box[s0[1][14]]; s0[0][14]=box[s0[1][ 6]];
s3[0][1]=box[s3[1][13]]; s3[0][13]=box[s3[1][ 9]]; s3[0][ 9]=box[s3[1][ 5]]; s3[0][ 5]=box[s3[1][ 1]];
}
static inline int mix_core(uint32_t multbl[4][256], int a, int b, int c, int d){
#ifdef CONFIG_SMALL
#define ROT(x,s) ((x<<s)|(x>>(32-s)))
return multbl[0][a] ^ ROT(multbl[0][b], 8) ^ ROT(multbl[0][c], 16) ^ ROT(multbl[0][d], 24);
#else
return multbl[0][a] ^ multbl[1][b] ^ multbl[2][c] ^ multbl[3][d];
#endif
}
static inline void mix(uint8_t state[2][4][4], uint32_t multbl[4][256], int s1, int s3){
((uint32_t *)(state))[0] = mix_core(multbl, state[1][0][0], state[1][s1 ][1], state[1][2][2], state[1][s3 ][3]);
((uint32_t *)(state))[1] = mix_core(multbl, state[1][1][0], state[1][s3-1][1], state[1][3][2], state[1][s1-1][3]);
((uint32_t *)(state))[2] = mix_core(multbl, state[1][2][0], state[1][s3 ][1], state[1][0][2], state[1][s1 ][3]);
((uint32_t *)(state))[3] = mix_core(multbl, state[1][3][0], state[1][s1-1][1], state[1][1][2], state[1][s3-1][3]);
}
static inline void crypt(AVAES *a, int s, uint8_t *sbox, uint32_t *multbl){
int r;
for(r=a->rounds-1; r>0; r--){
mix(a->state, multbl, 3-s, 1+s);
addkey(a->state[1], a->state[0], a->round_key[r]);
}
subshift(a->state[0][0], s, sbox);
}
void av_aes_crypt(AVAES *a, uint8_t *dst, uint8_t *src, int count, uint8_t *iv, int decrypt){
while(count--){
addkey(a->state[1], src, a->round_key[a->rounds]);
if(decrypt) {
crypt(a, 0, inv_sbox, dec_multbl);
if(iv){
addkey(a->state[0], a->state[0], iv);
memcpy(iv, src, 16);
}
addkey(dst, a->state[0], a->round_key[0]);
}else{
if(iv) addkey(a->state[1], a->state[1], iv);
crypt(a, 2, sbox, enc_multbl);
addkey(dst, a->state[0], a->round_key[0]);
if(iv) memcpy(iv, dst, 16);
}
src+=16;
dst+=16;
}
}
static void init_multbl2(uint8_t tbl[1024], int c[4], uint8_t *log8, uint8_t *alog8, uint8_t *sbox){
int i, j;
for(i=0; i<1024; i++){
int x= sbox[i>>2];
if(x) tbl[i]= alog8[ log8[x] + log8[c[i&3]] ];
}
#ifndef CONFIG_SMALL
for(j=256; j<1024; j++)
for(i=0; i<4; i++)
tbl[4*j+i]= tbl[4*j + ((i-1)&3) - 1024];
#endif
}
// this is based on the reference AES code by Paulo Barreto and Vincent Rijmen
int av_aes_init(AVAES *a, const uint8_t *key, int key_bits, int decrypt) {
int i, j, t, rconpointer = 0;
uint8_t tk[8][4];
int KC= key_bits>>5;
int rounds= KC + 6;
uint8_t log8[256];
uint8_t alog8[512];
if(!enc_multbl[0][sizeof(enc_multbl)/sizeof(enc_multbl[0][0])-1]){
j=1;
for(i=0; i<255; i++){
alog8[i]=
alog8[i+255]= j;
log8[j]= i;
j^= j+j;
if(j>255) j^= 0x11B;
}
for(i=0; i<256; i++){
j= i ? alog8[255-log8[i]] : 0;
j ^= (j<<1) ^ (j<<2) ^ (j<<3) ^ (j<<4);
j = (j ^ (j>>8) ^ 99) & 255;
inv_sbox[j]= i;
sbox [i]= j;
}
init_multbl2(dec_multbl[0], (int[4]){0xe, 0x9, 0xd, 0xb}, log8, alog8, inv_sbox);
init_multbl2(enc_multbl[0], (int[4]){0x2, 0x1, 0x1, 0x3}, log8, alog8, sbox);
}
if(key_bits!=128 && key_bits!=192 && key_bits!=256)
return -1;
a->rounds= rounds;
memcpy(tk, key, KC*4);
for(t= 0; t < (rounds+1)*16;) {
memcpy(a->round_key[0][0]+t, tk, KC*4);
t+= KC*4;
for(i = 0; i < 4; i++)
tk[0][i] ^= sbox[tk[KC-1][(i+1)&3]];
tk[0][0] ^= rcon[rconpointer++];
for(j = 1; j < KC; j++){
if(KC != 8 || j != KC>>1)
for(i = 0; i < 4; i++) tk[j][i] ^= tk[j-1][i];
else
for(i = 0; i < 4; i++) tk[j][i] ^= sbox[tk[j-1][i]];
}
}
if(decrypt){
for(i=1; i<rounds; i++){
uint8_t tmp[3][16];
memcpy(tmp[2], a->round_key[i][0], 16);
subshift(tmp[1], 0, sbox);
mix(tmp, dec_multbl, 1, 3);
memcpy(a->round_key[i][0], tmp[0], 16);
}
}else{
for(i=0; i<(rounds+1)>>1; i++){
for(j=0; j<16; j++)
FFSWAP(int, a->round_key[i][0][j], a->round_key[rounds-i][0][j]);
}
}
return 0;
}
#ifdef TEST
#include "log.h"
#undef random
int main(void){
int i,j;
AVAES ae, ad, b;
uint8_t rkey[2][16]= {
{0},
{0x10, 0xa5, 0x88, 0x69, 0xd7, 0x4b, 0xe5, 0xa3, 0x74, 0xcf, 0x86, 0x7c, 0xfb, 0x47, 0x38, 0x59}};
uint8_t pt[16], rpt[2][16]= {
{0x6a, 0x84, 0x86, 0x7c, 0xd7, 0x7e, 0x12, 0xad, 0x07, 0xea, 0x1b, 0xe8, 0x95, 0xc5, 0x3f, 0xa3},
{0}};
uint8_t rct[2][16]= {
{0x73, 0x22, 0x81, 0xc0, 0xa0, 0xaa, 0xb8, 0xf7, 0xa5, 0x4a, 0x0c, 0x67, 0xa0, 0xc4, 0x5e, 0xcf},
{0x6d, 0x25, 0x1e, 0x69, 0x44, 0xb0, 0x51, 0xe0, 0x4e, 0xaa, 0x6f, 0xb4, 0xdb, 0xf7, 0x84, 0x65}};
uint8_t temp[16];
av_aes_init(&ae, "PI=3.141592654..", 128, 0);
av_aes_init(&ad, "PI=3.141592654..", 128, 1);
av_log_level= AV_LOG_DEBUG;
for(i=0; i<2; i++){
av_aes_init(&b, rkey[i], 128, 1);
av_aes_crypt(&b, temp, rct[i], 1, NULL, 1);
for(j=0; j<16; j++)
if(rpt[i][j] != temp[j])
av_log(NULL, AV_LOG_ERROR, "%d %02X %02X\n", j, rpt[i][j], temp[j]);
}
for(i=0; i<10000; i++){
for(j=0; j<16; j++){
pt[j]= random();
}
{START_TIMER
av_aes_crypt(&ae, temp, pt, 1, NULL, 0);
if(!(i&(i-1)))
av_log(NULL, AV_LOG_ERROR, "%02X %02X %02X %02X\n", temp[0], temp[5], temp[10], temp[15]);
av_aes_crypt(&ad, temp, temp, 1, NULL, 1);
STOP_TIMER("aes")}
for(j=0; j<16; j++){
if(pt[j] != temp[j]){
av_log(NULL, AV_LOG_ERROR, "%d %d %02X %02X\n", i,j, pt[j], temp[j]);
}
}
}
return 0;
}
#endif

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/*
* copyright (c) 2007 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_AES_H
#define FFMPEG_AES_H
#include <stdint.h>
extern const int av_aes_size;
struct AVAES;
/**
* Initializes an AVAES context.
* @param key_bits 128, 192 or 256
* @param decrypt 0 for encryption, 1 for decryption
*/
int av_aes_init(struct AVAES *a, const uint8_t *key, int key_bits, int decrypt);
/**
* Encrypts / decrypts.
* @param count number of 16 byte blocks
* @param dst destination array, can be equal to src
* @param src source array, can be equal to dst
* @param iv initialization vector for CBC mode, if NULL then ECB will be used
* @param decrypt 0 for encryption, 1 for decryption
*/
void av_aes_crypt(struct AVAES *a, uint8_t *dst, uint8_t *src, int count, uint8_t *iv, int decrypt);
#endif /* FFMPEG_AES_H */

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/*
* Copyright (c) 2007 Mans Rullgard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_AVSTRING_H
#define FFMPEG_AVSTRING_H
#include <stddef.h>
/**
* Return non-zero if pfx is a prefix of str. If it is, *ptr is set to
* the address of the first character in str after the prefix.
*
* @param str input string
* @param pfx prefix to test
* @param ptr updated after the prefix in str in there is a match
* @return non-zero if the prefix matches, zero otherwise
*/
int av_strstart(const char *str, const char *pfx, const char **ptr);
/**
* Return non-zero if pfx is a prefix of str independent of case. If
* it is, *ptr is set to the address of the first character in str
* after the prefix.
*
* @param str input string
* @param pfx prefix to test
* @param ptr updated after the prefix in str in there is a match
* @return non-zero if the prefix matches, zero otherwise
*/
int av_stristart(const char *str, const char *pfx, const char **ptr);
/**
* Copy the string src to dst, but no more than size - 1 bytes, and
* null terminate dst.
*
* This function is the same as BSD strlcpy().
*
* @param dst destination buffer
* @param src source string
* @param size size of destination buffer
* @return the length of src
*/
size_t av_strlcpy(char *dst, const char *src, size_t size);
/**
* Append the string src to the string dst, but to a total length of
* no more than size - 1 bytes, and null terminate dst.
*
* This function is similar to BSD strlcat(), but differs when
* size <= strlen(dst).
*
* @param dst destination buffer
* @param src source string
* @param size size of destination buffer
* @return the total length of src and dst
*/
size_t av_strlcat(char *dst, const char *src, size_t size);
/**
* Append output to a string, according to a format. Never write out of
* the destination buffer, and and always put a terminating 0 within
* the buffer.
* @param dst destination buffer (string to which the output is
* appended)
* @param size total size of the destination buffer
* @param fmt printf-compatible format string, specifying how the
* following parameters are used
* @return the length of the string that would have been generated
* if enough space had been available
*/
size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...);
#endif /* FFMPEG_AVSTRING_H */

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_AVUTIL_H
#define FFMPEG_AVUTIL_H
/**
* @file avutil.h
* external API header
*/
#define AV_STRINGIFY(s) AV_TOSTRING(s)
#define AV_TOSTRING(s) #s
#define AV_VERSION_INT(a, b, c) (a<<16 | b<<8 | c)
#define AV_VERSION_DOT(a, b, c) a ##.## b ##.## c
#define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
#define LIBAVUTIL_VERSION_MAJOR 49
#define LIBAVUTIL_VERSION_MINOR 10
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
LIBAVUTIL_VERSION_MINOR, \
LIBAVUTIL_VERSION_MICRO)
#define LIBAVUTIL_VERSION AV_VERSION(LIBAVUTIL_VERSION_MAJOR, \
LIBAVUTIL_VERSION_MINOR, \
LIBAVUTIL_VERSION_MICRO)
#define LIBAVUTIL_BUILD LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_IDENT "Lavu" AV_STRINGIFY(LIBAVUTIL_VERSION)
/**
* Returns the LIBAVUTIL_VERSION_INT constant.
*/
unsigned avutil_version(void);
#include "common.h"
#include "mathematics.h"
#include "rational.h"
#include "intfloat_readwrite.h"
#include "log.h"
/**
* Pixel format. Notes:
*
* PIX_FMT_RGB32 is handled in an endian-specific manner. A RGBA
* color is put together as:
* (A << 24) | (R << 16) | (G << 8) | B
* This is stored as BGRA on little endian CPU architectures and ARGB on
* big endian CPUs.
*
* When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
* image data is stored in AVFrame.data[0]. The palette is transported in
* AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
* formatted the same as in PIX_FMT_RGB32 described above (i.e., it is
* also endian-specific). Note also that the individual RGB palette
* components stored in AVFrame.data[1] should be in the range 0..255.
* This is important as many custom PAL8 video codecs that were designed
* to run on the IBM VGA graphics adapter use 6-bit palette components.
*/
enum PixelFormat {
PIX_FMT_NONE= -1,
PIX_FMT_YUV420P, ///< Planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
PIX_FMT_YUYV422, ///< Packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
PIX_FMT_RGB24, ///< Packed RGB 8:8:8, 24bpp, RGBRGB...
PIX_FMT_BGR24, ///< Packed RGB 8:8:8, 24bpp, BGRBGR...
PIX_FMT_YUV422P, ///< Planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
PIX_FMT_YUV444P, ///< Planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
PIX_FMT_RGB32, ///< Packed RGB 8:8:8, 32bpp, (msb)8A 8R 8G 8B(lsb), in cpu endianness
PIX_FMT_YUV410P, ///< Planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
PIX_FMT_YUV411P, ///< Planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
PIX_FMT_RGB565, ///< Packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), in cpu endianness
PIX_FMT_RGB555, ///< Packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), in cpu endianness most significant bit to 0
PIX_FMT_GRAY8, ///< Y , 8bpp
PIX_FMT_MONOWHITE, ///< Y , 1bpp, 0 is white, 1 is black
PIX_FMT_MONOBLACK, ///< Y , 1bpp, 0 is black, 1 is white
PIX_FMT_PAL8, ///< 8 bit with PIX_FMT_RGB32 palette
PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0, 12bpp, full scale (jpeg)
PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2, 16bpp, full scale (jpeg)
PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4, 24bpp, full scale (jpeg)
PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
PIX_FMT_XVMC_MPEG2_IDCT,
PIX_FMT_UYVY422, ///< Packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
PIX_FMT_UYYVYY411, ///< Packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3
PIX_FMT_BGR32, ///< Packed RGB 8:8:8, 32bpp, (msb)8A 8B 8G 8R(lsb), in cpu endianness
PIX_FMT_BGR565, ///< Packed RGB 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), in cpu endianness
PIX_FMT_BGR555, ///< Packed RGB 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), in cpu endianness most significant bit to 1
PIX_FMT_BGR8, ///< Packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
PIX_FMT_BGR4, ///< Packed RGB 1:2:1, 4bpp, (msb)1B 2G 1R(lsb)
PIX_FMT_BGR4_BYTE, ///< Packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb)
PIX_FMT_RGB8, ///< Packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb)
PIX_FMT_RGB4, ///< Packed RGB 1:2:1, 4bpp, (msb)2R 3G 3B(lsb)
PIX_FMT_RGB4_BYTE, ///< Packed RGB 1:2:1, 8bpp, (msb)2R 3G 3B(lsb)
PIX_FMT_NV12, ///< Planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 for UV
PIX_FMT_NV21, ///< as above, but U and V bytes are swapped
PIX_FMT_RGB32_1, ///< Packed RGB 8:8:8, 32bpp, (msb)8R 8G 8B 8A(lsb), in cpu endianness
PIX_FMT_BGR32_1, ///< Packed RGB 8:8:8, 32bpp, (msb)8B 8G 8R 8A(lsb), in cpu endianness
PIX_FMT_GRAY16BE, ///< Y , 16bpp, big-endian
PIX_FMT_GRAY16LE, ///< Y , 16bpp, little-endian
PIX_FMT_YUV440P, ///< Planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
PIX_FMT_YUVJ440P, ///< Planar YUV 4:4:0 full scale (jpeg)
PIX_FMT_YUVA420P, ///< Planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
PIX_FMT_NB, ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
};
#ifdef WORDS_BIGENDIAN
#define PIX_FMT_RGBA PIX_FMT_RGB32_1
#define PIX_FMT_BGRA PIX_FMT_BGR32_1
#define PIX_FMT_ARGB PIX_FMT_RGB32
#define PIX_FMT_ABGR PIX_FMT_BGR32
#define PIX_FMT_GRAY16 PIX_FMT_GRAY16BE
#else
#define PIX_FMT_RGBA PIX_FMT_BGR32
#define PIX_FMT_BGRA PIX_FMT_RGB32
#define PIX_FMT_ARGB PIX_FMT_BGR32_1
#define PIX_FMT_ABGR PIX_FMT_RGB32_1
#define PIX_FMT_GRAY16 PIX_FMT_GRAY16LE
#endif
#if LIBAVUTIL_VERSION_INT < (50<<16)
#define PIX_FMT_UYVY411 PIX_FMT_UYYVYY411
#define PIX_FMT_RGBA32 PIX_FMT_RGB32
#define PIX_FMT_YUV422 PIX_FMT_YUYV422
#endif
#endif /* FFMPEG_AVUTIL_H */

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/*
* Base64.c
* Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com)
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file base64.c
* @brief Base64 Encode/Decode
* @author Ryan Martell <rdm4@martellventures.com> (with lots of Michael)
*/
#include "common.h"
#include "base64.h"
/* ---------------- private code */
static const uint8_t map2[] =
{
0x3e, 0xff, 0xff, 0xff, 0x3f, 0x34, 0x35, 0x36,
0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x01,
0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11,
0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1a, 0x1b,
0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33
};
int av_base64_decode(uint8_t * out, const char *in, int out_length)
{
int i, v;
uint8_t *dst = out;
v = 0;
for (i = 0; in[i] && in[i] != '='; i++) {
unsigned int index= in[i]-43;
if (index>=(sizeof(map2)/sizeof(map2[0])) || map2[index] == 0xff)
return -1;
v = (v << 6) + map2[index];
if (i & 3) {
if (dst - out < out_length) {
*dst++ = v >> (6 - 2 * (i & 3));
}
}
}
return dst - out;
}
/*****************************************************************************
* b64_encode: stolen from VLC's http.c
* simplified by michael
* fixed edge cases and made it work from data (vs. strings) by ryan.
*****************************************************************************/
char *av_base64_encode(char * buf, int buf_len, const uint8_t * src, int len)
{
static const char b64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
char *ret, *dst;
unsigned i_bits = 0;
int i_shift = 0;
int bytes_remaining = len;
if (len >= UINT_MAX / 4 ||
buf_len < len * 4 / 3 + 12)
return NULL;
ret = dst = buf;
while (bytes_remaining) {
i_bits = (i_bits << 8) + *src++;
bytes_remaining--;
i_shift += 8;
do {
*dst++ = b64[(i_bits << 6 >> i_shift) & 0x3f];
i_shift -= 6;
} while (i_shift > 6 || (bytes_remaining == 0 && i_shift > 0));
}
while ((dst - ret) & 3)
*dst++ = '=';
*dst = '\0';
return ret;
}
// #define TEST_BASE64
#ifdef TEST_BASE64
#include "avutil.h"
int b64test()
{
int numerr = 0;
int len;
int numtest = 1;
uint8_t decode[1000];
struct test {
void *data;
int len;
const char *result;
} *t, tests[] = {
{
"", 0, ""}, {
"1", 1, "MQ=="}, {
"22", 2, "MjI="}, {
"333", 3, "MzMz"}, {
"4444", 4, "NDQ0NA=="}, {
"55555", 5, "NTU1NTU="}, {
"abc:def", 7, "YWJjOmRlZg=="}, {
NULL}
};
for (t = tests; t->data; t++) {
char *str;
av_log(NULL, AV_LOG_ERROR, "Encoding %s...\n", (char *) t->data);
str = av_base64_encode(t->data, t->len);
if (str) {
av_log(NULL, AV_LOG_ERROR, "Encoded to %s...\n", str);
if (strcmp(str, t->result) != 0) {
av_log(NULL, AV_LOG_ERROR, "failed test %d: %s != %s\n",
numtest, str, t->result);
numerr++;
}
av_free(str);
}
av_log(NULL, AV_LOG_ERROR, "Done encoding, about to decode...\n");
len = av_base64_decode(decode, t->result, sizeof(decode));
if (len != t->len) {
av_log(NULL, AV_LOG_ERROR, "failed test %d: len %d != %d\n",
numtest, len, t->len);
numerr++;
} else if (memcmp(decode, t->data, t->len) != 0) {
av_log(NULL, AV_LOG_ERROR, "failed test %d: data\n", numtest);
numerr++;
} else {
av_log(NULL, AV_LOG_ERROR, "Decoded to %s\n",
(char *) t->data);
}
numtest++;
}
#undef srand
#undef rand
{
int test_count;
srand(123141); // time(NULL));
for (test_count = 0; test_count < 100; test_count++) {
int size = rand() % 1024;
int ii;
uint8_t *data;
char *encoded_result;
av_log(NULL, AV_LOG_ERROR, "Test %d: Size %d bytes...",
test_count, size);
data = (uint8_t *) av_malloc(size);
for (ii = 0; ii < size; ii++) {
data[ii] = rand() % 255;
}
encoded_result = av_base64_encode(data, size);
if (encoded_result) {
int decode_buffer_size = size + 10; // try without 10 as well
uint8_t *decode_buffer = av_malloc(decode_buffer_size);
if (decode_buffer) {
int decoded_size =
av_base64_decode(decode_buffer, encoded_result,
decode_buffer_size);
if (decoded_size != size) {
av_log(NULL, AV_LOG_ERROR,
"Decoded/Encoded size mismatch (%d != %d)\n",
decoded_size, size);
} else {
if (memcmp(decode_buffer, data, decoded_size) == 0) {
av_log(NULL, AV_LOG_ERROR, "Passed!\n");
} else {
av_log(NULL, AV_LOG_ERROR,
"Failed (Data differs)!\n");
}
}
av_free(decode_buffer);
}
av_free(encoded_result);
}
}
}
// these are invalid strings, that it currently decodes (which it probably shouldn't?)
{
uint8_t str[32];
if (av_base64_decode(str, "M=M=", sizeof(str)) != -1) {
av_log(NULL, AV_LOG_ERROR,
"failed test %d: successful decode of `M=M='\n",
numtest++);
numerr++;
}
if (av_base64_decode(str, "MQ===", sizeof(str)) != -1) {
av_log(NULL, AV_LOG_ERROR,
"failed test %d: successful decode of `MQ==='\n",
numtest++);
numerr++;
}
}
return numerr;
}
#endif

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/*
* Base64.c
* Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com)
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_BASE64_H
#define FFMPEG_BASE64_H
#include <stdint.h>
/**
* decodes base64
* param order as strncpy()
*/
int av_base64_decode(uint8_t * out, const char *in, int out_length);
/**
* encodes base64
* @param src data, not a string
* @param buf output string
*/
char *av_base64_encode(char * buf, int buf_len, const uint8_t * src, int len);
#endif /* FFMPEG_BASE64_H */

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file bswap.h
* byte swapping routines
*/
#ifndef FFMPEG_BSWAP_H
#define FFMPEG_BSWAP_H
#include <stdint.h>
#include "config.h"
#include "common.h"
#ifdef HAVE_BYTESWAP_H
#include <byteswap.h>
#else
static av_always_inline av_const uint16_t bswap_16(uint16_t x)
{
#if defined(ARCH_X86)
asm("rorw $8, %0" : "+r"(x));
#elif defined(ARCH_SH4)
asm("swap.b %0,%0" : "=r"(x) : "0"(x));
#elif defined(HAVE_ARMV6)
asm("rev16 %0, %0" : "+r"(x));
#else
x= (x>>8) | (x<<8);
#endif
return x;
}
static av_always_inline av_const uint32_t bswap_32(uint32_t x)
{
#if defined(ARCH_X86)
#ifdef HAVE_BSWAP
asm("bswap %0" : "+r" (x));
#else
asm("rorw $8, %w0 \n\t"
"rorl $16, %0 \n\t"
"rorw $8, %w0"
: "+r"(x));
#endif
#elif defined(ARCH_SH4)
asm("swap.b %0,%0\n"
"swap.w %0,%0\n"
"swap.b %0,%0\n"
: "=r"(x) : "0"(x));
#elif defined(HAVE_ARMV6)
asm("rev %0, %0" : "+r"(x));
#elif defined(ARCH_ARMV4L)
uint32_t t;
asm ("eor %1, %0, %0, ror #16 \n\t"
"bic %1, %1, #0xFF0000 \n\t"
"mov %0, %0, ror #8 \n\t"
"eor %0, %0, %1, lsr #8 \n\t"
: "+r"(x), "+r"(t));
#elif defined(ARCH_BFIN)
unsigned tmp;
asm("%1 = %0 >> 8 (V); \n\t"
"%0 = %0 << 8 (V); \n\t"
"%0 = %0 | %1; \n\t"
"%0 = PACK(%0.L, %0.H); \n\t"
: "+d"(x), "=&d"(tmp));
#else
x= ((x<<8)&0xFF00FF00) | ((x>>8)&0x00FF00FF);
x= (x>>16) | (x<<16);
#endif
return x;
}
static inline uint64_t av_const bswap_64(uint64_t x)
{
#if 0
x= ((x<< 8)&0xFF00FF00FF00FF00ULL) | ((x>> 8)&0x00FF00FF00FF00FFULL);
x= ((x<<16)&0xFFFF0000FFFF0000ULL) | ((x>>16)&0x0000FFFF0000FFFFULL);
return (x>>32) | (x<<32);
#elif defined(ARCH_X86_64)
asm("bswap %0": "=r" (x) : "0" (x));
return x;
#else
union {
uint64_t ll;
uint32_t l[2];
} w, r;
w.ll = x;
r.l[0] = bswap_32 (w.l[1]);
r.l[1] = bswap_32 (w.l[0]);
return r.ll;
#endif
}
#endif /* !HAVE_BYTESWAP_H */
// be2me ... BigEndian to MachineEndian
// le2me ... LittleEndian to MachineEndian
#ifdef WORDS_BIGENDIAN
#define be2me_16(x) (x)
#define be2me_32(x) (x)
#define be2me_64(x) (x)
#define le2me_16(x) bswap_16(x)
#define le2me_32(x) bswap_32(x)
#define le2me_64(x) bswap_64(x)
#else
#define be2me_16(x) bswap_16(x)
#define be2me_32(x) bswap_32(x)
#define be2me_64(x) bswap_64(x)
#define le2me_16(x) (x)
#define le2me_32(x) (x)
#define le2me_64(x) (x)
#endif
#endif /* FFMPEG_BSWAP_H */

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file common.h
* common internal and external API header
*/
#ifndef FFMPEG_COMMON_H
#define FFMPEG_COMMON_H
#include <inttypes.h>
#ifdef HAVE_AV_CONFIG_H
/* only include the following when compiling package */
# include "config.h"
# include <stdlib.h>
# include <stdio.h>
# include <string.h>
# include <ctype.h>
# include <limits.h>
# include <errno.h>
# include <math.h>
#endif /* HAVE_AV_CONFIG_H */
#ifndef av_always_inline
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
# define av_always_inline __attribute__((always_inline)) inline
#else
# define av_always_inline inline
#endif
#endif
#ifndef av_noinline
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
# define av_noinline __attribute__((noinline))
#else
# define av_noinline
#endif
#endif
#ifndef av_pure
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
# define av_pure __attribute__((pure))
#else
# define av_pure
#endif
#endif
#ifndef av_const
#if defined(__GNUC__) && (__GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ > 5)
# define av_const __attribute__((const))
#else
# define av_const
#endif
#endif
#ifndef av_cold
#if defined(__GNUC__) && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ > 2)
# define av_cold __attribute__((cold))
#else
# define av_cold
#endif
#endif
#ifdef HAVE_AV_CONFIG_H
# include "internal.h"
#endif /* HAVE_AV_CONFIG_H */
#ifndef attribute_deprecated
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
# define attribute_deprecated __attribute__((deprecated))
#else
# define attribute_deprecated
#endif
#endif
#ifndef av_unused
#if defined(__GNUC__)
# define av_unused __attribute__((unused))
#else
# define av_unused
#endif
#endif
#include "mem.h"
//rounded divison & shift
#define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))
/* assume b>0 */
#define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
#define FFABS(a) ((a) >= 0 ? (a) : (-(a)))
#define FFSIGN(a) ((a) > 0 ? 1 : -1)
#define FFMAX(a,b) ((a) > (b) ? (a) : (b))
#define FFMAX3(a,b,c) FFMAX(FFMAX(a,b),c)
#define FFMIN(a,b) ((a) > (b) ? (b) : (a))
#define FFMIN3(a,b,c) FFMIN(FFMIN(a,b),c)
#define FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)
/* misc math functions */
extern const uint8_t ff_log2_tab[256];
static inline av_const int av_log2(unsigned int v)
{
int n = 0;
if (v & 0xffff0000) {
v >>= 16;
n += 16;
}
if (v & 0xff00) {
v >>= 8;
n += 8;
}
n += ff_log2_tab[v];
return n;
}
static inline av_const int av_log2_16bit(unsigned int v)
{
int n = 0;
if (v & 0xff00) {
v >>= 8;
n += 8;
}
n += ff_log2_tab[v];
return n;
}
/* median of 3 */
static inline av_const int mid_pred(int a, int b, int c)
{
#ifdef HAVE_CMOV
int i=b;
asm volatile(
"cmp %2, %1 \n\t"
"cmovg %1, %0 \n\t"
"cmovg %2, %1 \n\t"
"cmp %3, %1 \n\t"
"cmovl %3, %1 \n\t"
"cmp %1, %0 \n\t"
"cmovg %1, %0 \n\t"
:"+&r"(i), "+&r"(a)
:"r"(b), "r"(c)
);
return i;
#elif 0
int t= (a-b)&((a-b)>>31);
a-=t;
b+=t;
b-= (b-c)&((b-c)>>31);
b+= (a-b)&((a-b)>>31);
return b;
#else
if(a>b){
if(c>b){
if(c>a) b=a;
else b=c;
}
}else{
if(b>c){
if(c>a) b=c;
else b=a;
}
}
return b;
#endif
}
/**
* clip a signed integer value into the amin-amax range
* @param a value to clip
* @param amin minimum value of the clip range
* @param amax maximum value of the clip range
* @return clipped value
*/
static inline av_const int av_clip(int a, int amin, int amax)
{
if (a < amin) return amin;
else if (a > amax) return amax;
else return a;
}
/**
* clip a signed integer value into the 0-255 range
* @param a value to clip
* @return clipped value
*/
static inline av_const uint8_t av_clip_uint8(int a)
{
if (a&(~255)) return (-a)>>31;
else return a;
}
/**
* clip a signed integer value into the -32768,32767 range
* @param a value to clip
* @return clipped value
*/
static inline av_const int16_t av_clip_int16(int a)
{
if ((a+32768) & ~65535) return (a>>31) ^ 32767;
else return a;
}
/**
* clip a float value into the amin-amax range
* @param a value to clip
* @param amin minimum value of the clip range
* @param amax maximum value of the clip range
* @return clipped value
*/
static inline av_const float av_clipf(float a, float amin, float amax)
{
if (a < amin) return amin;
else if (a > amax) return amax;
else return a;
}
/* math */
int64_t av_const ff_gcd(int64_t a, int64_t b);
/**
* converts fourcc string to int
*/
static inline av_pure int ff_get_fourcc(const char *s){
#ifdef HAVE_AV_CONFIG_H
assert( strlen(s)==4 );
#endif
return (s[0]) + (s[1]<<8) + (s[2]<<16) + (s[3]<<24);
}
#define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
#define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
/*!
* \def GET_UTF8(val, GET_BYTE, ERROR)
* converts a UTF-8 character (up to 4 bytes long) to its 32-bit UCS-4 encoded form
* \param val is the output and should be of type uint32_t. It holds the converted
* UCS-4 character and should be a left value.
* \param GET_BYTE gets UTF-8 encoded bytes from any proper source. It can be
* a function or a statement whose return value or evaluated value is of type
* uint8_t. It will be executed up to 4 times for values in the valid UTF-8 range,
* and up to 7 times in the general case.
* \param ERROR action that should be taken when an invalid UTF-8 byte is returned
* from GET_BYTE. It should be a statement that jumps out of the macro,
* like exit(), goto, return, break, or continue.
*/
#define GET_UTF8(val, GET_BYTE, ERROR)\
val= GET_BYTE;\
{\
int ones= 7 - av_log2(val ^ 255);\
if(ones==1)\
ERROR\
val&= 127>>ones;\
while(--ones > 0){\
int tmp= GET_BYTE - 128;\
if(tmp>>6)\
ERROR\
val= (val<<6) + tmp;\
}\
}
/*!
* \def PUT_UTF8(val, tmp, PUT_BYTE)
* converts a 32-bit unicode character to its UTF-8 encoded form (up to 4 bytes long).
* \param val is an input only argument and should be of type uint32_t. It holds
* a ucs4 encoded unicode character that is to be converted to UTF-8. If
* val is given as a function it's executed only once.
* \param tmp is a temporary variable and should be of type uint8_t. It
* represents an intermediate value during conversion that is to be
* outputted by PUT_BYTE.
* \param PUT_BYTE writes the converted UTF-8 bytes to any proper destination.
* It could be a function or a statement, and uses tmp as the input byte.
* For example, PUT_BYTE could be "*output++ = tmp;" PUT_BYTE will be
* executed up to 4 times for values in the valid UTF-8 range and up to
* 7 times in the general case, depending on the length of the converted
* unicode character.
*/
#define PUT_UTF8(val, tmp, PUT_BYTE)\
{\
int bytes, shift;\
uint32_t in = val;\
if (in < 0x80) {\
tmp = in;\
PUT_BYTE\
} else {\
bytes = (av_log2(in) + 4) / 5;\
shift = (bytes - 1) * 6;\
tmp = (256 - (256 >> bytes)) | (in >> shift);\
PUT_BYTE\
while (shift >= 6) {\
shift -= 6;\
tmp = 0x80 | ((in >> shift) & 0x3f);\
PUT_BYTE\
}\
}\
}
#if defined(ARCH_X86) || defined(ARCH_POWERPC) || defined(ARCH_BFIN)
#define AV_READ_TIME read_time
#if defined(ARCH_X86_64)
static inline uint64_t read_time(void)
{
uint64_t a, d;
asm volatile("rdtsc\n\t"
: "=a" (a), "=d" (d));
return (d << 32) | (a & 0xffffffff);
}
#elif defined(ARCH_X86_32)
static inline long long read_time(void)
{
long long l;
asm volatile("rdtsc\n\t"
: "=A" (l));
return l;
}
#elif ARCH_BFIN
static inline uint64_t read_time(void)
{
union {
struct {
unsigned lo;
unsigned hi;
} p;
unsigned long long c;
} t;
asm volatile ("%0=cycles; %1=cycles2;" : "=d" (t.p.lo), "=d" (t.p.hi));
return t.c;
}
#else //FIXME check ppc64
static inline uint64_t read_time(void)
{
uint32_t tbu, tbl, temp;
/* from section 2.2.1 of the 32-bit PowerPC PEM */
asm volatile(
"1:\n"
"mftbu %2\n"
"mftb %0\n"
"mftbu %1\n"
"cmpw %2,%1\n"
"bne 1b\n"
: "=r"(tbl), "=r"(tbu), "=r"(temp)
:
: "cc");
return (((uint64_t)tbu)<<32) | (uint64_t)tbl;
}
#endif
#elif defined(HAVE_GETHRTIME)
#define AV_READ_TIME gethrtime
#endif
#ifdef AV_READ_TIME
#define START_TIMER \
uint64_t tend;\
uint64_t tstart= AV_READ_TIME();\
#define STOP_TIMER(id) \
tend= AV_READ_TIME();\
{\
static uint64_t tsum=0;\
static int tcount=0;\
static int tskip_count=0;\
if(tcount<2 || tend - tstart < FFMAX(8*tsum/tcount, 2000)){\
tsum+= tend - tstart;\
tcount++;\
}else\
tskip_count++;\
if(((tcount+tskip_count)&(tcount+tskip_count-1))==0){\
av_log(NULL, AV_LOG_ERROR, "%"PRIu64" dezicycles in %s, %d runs, %d skips\n",\
tsum*10/tcount, id, tcount, tskip_count);\
}\
}
#else
#define START_TIMER
#define STOP_TIMER(id) {}
#endif
/**
* Returns NULL if CONFIG_SMALL is defined otherwise the argument
* without modifications, used to disable the definition of strings
* (for example AVCodec long_names).
*/
#ifdef CONFIG_SMALL
# define NULL_IF_CONFIG_SMALL(x) NULL
#else
# define NULL_IF_CONFIG_SMALL(x) x
#endif
#endif /* FFMPEG_COMMON_H */

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "common.h"
#include "crc.h"
#ifdef CONFIG_HARDCODED_TABLES
#include "crc_data.h"
#else
static struct {
uint8_t le;
uint8_t bits;
uint32_t poly;
} av_crc_table_params[AV_CRC_MAX] = {
[AV_CRC_8_ATM] = { 0, 8, 0x07 },
[AV_CRC_16_ANSI] = { 0, 16, 0x8005 },
[AV_CRC_16_CCITT] = { 0, 16, 0x1021 },
[AV_CRC_32_IEEE] = { 0, 32, 0x04C11DB7 },
[AV_CRC_32_IEEE_LE] = { 1, 32, 0xEDB88320 },
};
static AVCRC av_crc_table[AV_CRC_MAX][257];
#endif
/**
* Inits a crc table.
* @param ctx must be an array of sizeof(AVCRC)*257 or sizeof(AVCRC)*1024
* @param cts_size size of ctx in bytes
* @param le if 1, lowest bit represents coefficient for highest exponent
* of corresponding polynomial (both for poly and actual CRC).
* If 0, you must swap the crc parameter and the result of av_crc
* if you need the standard representation (can be simplified in
* most cases to e.g. bswap16):
* bswap_32(crc << (32-bits))
* @param bits number of bits for the CRC
* @param poly generator polynomial without the x**bits coefficient, in the
* representation as specified by le
* @return <0 on failure
*/
int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size){
int i, j;
uint32_t c;
if (bits < 8 || bits > 32 || poly >= (1LL<<bits))
return -1;
if (ctx_size != sizeof(AVCRC)*257 && ctx_size != sizeof(AVCRC)*1024)
return -1;
for (i = 0; i < 256; i++) {
if (le) {
for (c = i, j = 0; j < 8; j++)
c = (c>>1)^(poly & (-(c&1)));
ctx[i] = c;
} else {
for (c = i << 24, j = 0; j < 8; j++)
c = (c<<1) ^ ((poly<<(32-bits)) & (((int32_t)c)>>31) );
ctx[i] = bswap_32(c);
}
}
ctx[256]=1;
#ifndef CONFIG_SMALL
if(ctx_size >= sizeof(AVCRC)*1024)
for (i = 0; i < 256; i++)
for(j=0; j<3; j++)
ctx[256*(j+1) + i]= (ctx[256*j + i]>>8) ^ ctx[ ctx[256*j + i]&0xFF ];
#endif
return 0;
}
/**
* Get an initialized standard CRC table.
* @param crc_id ID of a standard CRC
* @return a pointer to the CRC table or NULL on failure
*/
const AVCRC *av_crc_get_table(AVCRCId crc_id){
#ifndef CONFIG_HARDCODED_TABLES
if (!av_crc_table[crc_id][sizeof(av_crc_table[crc_id])/sizeof(av_crc_table[crc_id][0])-1])
if (av_crc_init(av_crc_table[crc_id],
av_crc_table_params[crc_id].le,
av_crc_table_params[crc_id].bits,
av_crc_table_params[crc_id].poly,
sizeof(av_crc_table[crc_id])) < 0)
return NULL;
#endif
return av_crc_table[crc_id];
}
/**
* Calculate the CRC of a block
* @param crc CRC of previous blocks if any or initial value for CRC.
* @return CRC updated with the data from the given block
*
* @see av_crc_init() "le" parameter
*/
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length){
const uint8_t *end= buffer+length;
#ifndef CONFIG_SMALL
if(!ctx[256])
while(buffer<end-3){
crc ^= le2me_32(*(const uint32_t*)buffer); buffer+=4;
crc = ctx[3*256 + ( crc &0xFF)]
^ctx[2*256 + ((crc>>8 )&0xFF)]
^ctx[1*256 + ((crc>>16)&0xFF)]
^ctx[0*256 + ((crc>>24) )];
}
#endif
while(buffer<end)
crc = ctx[((uint8_t)crc) ^ *buffer++] ^ (crc >> 8);
return crc;
}
#ifdef TEST
#undef printf
int main(void){
uint8_t buf[1999];
int i;
int p[4][3]={{AV_CRC_32_IEEE_LE, 0xEDB88320, 0x3D5CDD04},
{AV_CRC_32_IEEE , 0x04C11DB7, 0xC0F5BAE0},
{AV_CRC_16_ANSI , 0x8005, 0x1FBB },
{AV_CRC_8_ATM , 0x07, 0xE3 },};
const AVCRC *ctx;
for(i=0; i<sizeof(buf); i++)
buf[i]= i+i*i;
for(i=0; i<4; i++){
ctx = av_crc_get_table(p[i][0]);
printf("crc %08X =%X\n", p[i][1], av_crc(ctx, 0, buf, sizeof(buf)));
}
return 0;
}
#endif

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_CRC_H
#define FFMPEG_CRC_H
#include <stdint.h>
#include <stddef.h>
#include "common.h"
typedef uint32_t AVCRC;
typedef enum {
AV_CRC_8_ATM,
AV_CRC_16_ANSI,
AV_CRC_16_CCITT,
AV_CRC_32_IEEE,
AV_CRC_32_IEEE_LE, /*< reversed bitorder version of AV_CRC_32_IEEE */
AV_CRC_MAX, /*< not part of public API! don't use outside lavu */
}AVCRCId;
int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size);
const AVCRC *av_crc_get_table(AVCRCId crc_id);
uint32_t av_crc(const AVCRC *ctx, uint32_t start_crc, const uint8_t *buffer, size_t length) av_pure;
#endif /* FFMPEG_CRC_H */

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/*
* copyright (c) 2008 Aurelien Jacobs <aurel@gnuage.org>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_CRC_DATA_H
#define FFMPEG_CRC_DATA_H
#include "crc.h"
static const AVCRC av_crc_table[AV_CRC_MAX][257] = {
[AV_CRC_8_ATM] = {
0x00, 0x07, 0x0E, 0x09, 0x1C, 0x1B, 0x12, 0x15, 0x38, 0x3F, 0x36, 0x31,
0x24, 0x23, 0x2A, 0x2D, 0x70, 0x77, 0x7E, 0x79, 0x6C, 0x6B, 0x62, 0x65,
0x48, 0x4F, 0x46, 0x41, 0x54, 0x53, 0x5A, 0x5D, 0xE0, 0xE7, 0xEE, 0xE9,
0xFC, 0xFB, 0xF2, 0xF5, 0xD8, 0xDF, 0xD6, 0xD1, 0xC4, 0xC3, 0xCA, 0xCD,
0x90, 0x97, 0x9E, 0x99, 0x8C, 0x8B, 0x82, 0x85, 0xA8, 0xAF, 0xA6, 0xA1,
0xB4, 0xB3, 0xBA, 0xBD, 0xC7, 0xC0, 0xC9, 0xCE, 0xDB, 0xDC, 0xD5, 0xD2,
0xFF, 0xF8, 0xF1, 0xF6, 0xE3, 0xE4, 0xED, 0xEA, 0xB7, 0xB0, 0xB9, 0xBE,
0xAB, 0xAC, 0xA5, 0xA2, 0x8F, 0x88, 0x81, 0x86, 0x93, 0x94, 0x9D, 0x9A,
0x27, 0x20, 0x29, 0x2E, 0x3B, 0x3C, 0x35, 0x32, 0x1F, 0x18, 0x11, 0x16,
0x03, 0x04, 0x0D, 0x0A, 0x57, 0x50, 0x59, 0x5E, 0x4B, 0x4C, 0x45, 0x42,
0x6F, 0x68, 0x61, 0x66, 0x73, 0x74, 0x7D, 0x7A, 0x89, 0x8E, 0x87, 0x80,
0x95, 0x92, 0x9B, 0x9C, 0xB1, 0xB6, 0xBF, 0xB8, 0xAD, 0xAA, 0xA3, 0xA4,
0xF9, 0xFE, 0xF7, 0xF0, 0xE5, 0xE2, 0xEB, 0xEC, 0xC1, 0xC6, 0xCF, 0xC8,
0xDD, 0xDA, 0xD3, 0xD4, 0x69, 0x6E, 0x67, 0x60, 0x75, 0x72, 0x7B, 0x7C,
0x51, 0x56, 0x5F, 0x58, 0x4D, 0x4A, 0x43, 0x44, 0x19, 0x1E, 0x17, 0x10,
0x05, 0x02, 0x0B, 0x0C, 0x21, 0x26, 0x2F, 0x28, 0x3D, 0x3A, 0x33, 0x34,
0x4E, 0x49, 0x40, 0x47, 0x52, 0x55, 0x5C, 0x5B, 0x76, 0x71, 0x78, 0x7F,
0x6A, 0x6D, 0x64, 0x63, 0x3E, 0x39, 0x30, 0x37, 0x22, 0x25, 0x2C, 0x2B,
0x06, 0x01, 0x08, 0x0F, 0x1A, 0x1D, 0x14, 0x13, 0xAE, 0xA9, 0xA0, 0xA7,
0xB2, 0xB5, 0xBC, 0xBB, 0x96, 0x91, 0x98, 0x9F, 0x8A, 0x8D, 0x84, 0x83,
0xDE, 0xD9, 0xD0, 0xD7, 0xC2, 0xC5, 0xCC, 0xCB, 0xE6, 0xE1, 0xE8, 0xEF,
0xFA, 0xFD, 0xF4, 0xF3, 0x01
},
[AV_CRC_16_ANSI] = {
0x0000, 0x0580, 0x0F80, 0x0A00, 0x1B80, 0x1E00, 0x1400, 0x1180,
0x3380, 0x3600, 0x3C00, 0x3980, 0x2800, 0x2D80, 0x2780, 0x2200,
0x6380, 0x6600, 0x6C00, 0x6980, 0x7800, 0x7D80, 0x7780, 0x7200,
0x5000, 0x5580, 0x5F80, 0x5A00, 0x4B80, 0x4E00, 0x4400, 0x4180,
0xC380, 0xC600, 0xCC00, 0xC980, 0xD800, 0xDD80, 0xD780, 0xD200,
0xF000, 0xF580, 0xFF80, 0xFA00, 0xEB80, 0xEE00, 0xE400, 0xE180,
0xA000, 0xA580, 0xAF80, 0xAA00, 0xBB80, 0xBE00, 0xB400, 0xB180,
0x9380, 0x9600, 0x9C00, 0x9980, 0x8800, 0x8D80, 0x8780, 0x8200,
0x8381, 0x8601, 0x8C01, 0x8981, 0x9801, 0x9D81, 0x9781, 0x9201,
0xB001, 0xB581, 0xBF81, 0xBA01, 0xAB81, 0xAE01, 0xA401, 0xA181,
0xE001, 0xE581, 0xEF81, 0xEA01, 0xFB81, 0xFE01, 0xF401, 0xF181,
0xD381, 0xD601, 0xDC01, 0xD981, 0xC801, 0xCD81, 0xC781, 0xC201,
0x4001, 0x4581, 0x4F81, 0x4A01, 0x5B81, 0x5E01, 0x5401, 0x5181,
0x7381, 0x7601, 0x7C01, 0x7981, 0x6801, 0x6D81, 0x6781, 0x6201,
0x2381, 0x2601, 0x2C01, 0x2981, 0x3801, 0x3D81, 0x3781, 0x3201,
0x1001, 0x1581, 0x1F81, 0x1A01, 0x0B81, 0x0E01, 0x0401, 0x0181,
0x0383, 0x0603, 0x0C03, 0x0983, 0x1803, 0x1D83, 0x1783, 0x1203,
0x3003, 0x3583, 0x3F83, 0x3A03, 0x2B83, 0x2E03, 0x2403, 0x2183,
0x6003, 0x6583, 0x6F83, 0x6A03, 0x7B83, 0x7E03, 0x7403, 0x7183,
0x5383, 0x5603, 0x5C03, 0x5983, 0x4803, 0x4D83, 0x4783, 0x4203,
0xC003, 0xC583, 0xCF83, 0xCA03, 0xDB83, 0xDE03, 0xD403, 0xD183,
0xF383, 0xF603, 0xFC03, 0xF983, 0xE803, 0xED83, 0xE783, 0xE203,
0xA383, 0xA603, 0xAC03, 0xA983, 0xB803, 0xBD83, 0xB783, 0xB203,
0x9003, 0x9583, 0x9F83, 0x9A03, 0x8B83, 0x8E03, 0x8403, 0x8183,
0x8002, 0x8582, 0x8F82, 0x8A02, 0x9B82, 0x9E02, 0x9402, 0x9182,
0xB382, 0xB602, 0xBC02, 0xB982, 0xA802, 0xAD82, 0xA782, 0xA202,
0xE382, 0xE602, 0xEC02, 0xE982, 0xF802, 0xFD82, 0xF782, 0xF202,
0xD002, 0xD582, 0xDF82, 0xDA02, 0xCB82, 0xCE02, 0xC402, 0xC182,
0x4382, 0x4602, 0x4C02, 0x4982, 0x5802, 0x5D82, 0x5782, 0x5202,
0x7002, 0x7582, 0x7F82, 0x7A02, 0x6B82, 0x6E02, 0x6402, 0x6182,
0x2002, 0x2582, 0x2F82, 0x2A02, 0x3B82, 0x3E02, 0x3402, 0x3182,
0x1382, 0x1602, 0x1C02, 0x1982, 0x0802, 0x0D82, 0x0782, 0x0202,
0x0001
},
[AV_CRC_16_CCITT] = {
0x0000, 0x2110, 0x4220, 0x6330, 0x8440, 0xA550, 0xC660, 0xE770,
0x0881, 0x2991, 0x4AA1, 0x6BB1, 0x8CC1, 0xADD1, 0xCEE1, 0xEFF1,
0x3112, 0x1002, 0x7332, 0x5222, 0xB552, 0x9442, 0xF772, 0xD662,
0x3993, 0x1883, 0x7BB3, 0x5AA3, 0xBDD3, 0x9CC3, 0xFFF3, 0xDEE3,
0x6224, 0x4334, 0x2004, 0x0114, 0xE664, 0xC774, 0xA444, 0x8554,
0x6AA5, 0x4BB5, 0x2885, 0x0995, 0xEEE5, 0xCFF5, 0xACC5, 0x8DD5,
0x5336, 0x7226, 0x1116, 0x3006, 0xD776, 0xF666, 0x9556, 0xB446,
0x5BB7, 0x7AA7, 0x1997, 0x3887, 0xDFF7, 0xFEE7, 0x9DD7, 0xBCC7,
0xC448, 0xE558, 0x8668, 0xA778, 0x4008, 0x6118, 0x0228, 0x2338,
0xCCC9, 0xEDD9, 0x8EE9, 0xAFF9, 0x4889, 0x6999, 0x0AA9, 0x2BB9,
0xF55A, 0xD44A, 0xB77A, 0x966A, 0x711A, 0x500A, 0x333A, 0x122A,
0xFDDB, 0xDCCB, 0xBFFB, 0x9EEB, 0x799B, 0x588B, 0x3BBB, 0x1AAB,
0xA66C, 0x877C, 0xE44C, 0xC55C, 0x222C, 0x033C, 0x600C, 0x411C,
0xAEED, 0x8FFD, 0xECCD, 0xCDDD, 0x2AAD, 0x0BBD, 0x688D, 0x499D,
0x977E, 0xB66E, 0xD55E, 0xF44E, 0x133E, 0x322E, 0x511E, 0x700E,
0x9FFF, 0xBEEF, 0xDDDF, 0xFCCF, 0x1BBF, 0x3AAF, 0x599F, 0x788F,
0x8891, 0xA981, 0xCAB1, 0xEBA1, 0x0CD1, 0x2DC1, 0x4EF1, 0x6FE1,
0x8010, 0xA100, 0xC230, 0xE320, 0x0450, 0x2540, 0x4670, 0x6760,
0xB983, 0x9893, 0xFBA3, 0xDAB3, 0x3DC3, 0x1CD3, 0x7FE3, 0x5EF3,
0xB102, 0x9012, 0xF322, 0xD232, 0x3542, 0x1452, 0x7762, 0x5672,
0xEAB5, 0xCBA5, 0xA895, 0x8985, 0x6EF5, 0x4FE5, 0x2CD5, 0x0DC5,
0xE234, 0xC324, 0xA014, 0x8104, 0x6674, 0x4764, 0x2454, 0x0544,
0xDBA7, 0xFAB7, 0x9987, 0xB897, 0x5FE7, 0x7EF7, 0x1DC7, 0x3CD7,
0xD326, 0xF236, 0x9106, 0xB016, 0x5766, 0x7676, 0x1546, 0x3456,
0x4CD9, 0x6DC9, 0x0EF9, 0x2FE9, 0xC899, 0xE989, 0x8AB9, 0xABA9,
0x4458, 0x6548, 0x0678, 0x2768, 0xC018, 0xE108, 0x8238, 0xA328,
0x7DCB, 0x5CDB, 0x3FEB, 0x1EFB, 0xF98B, 0xD89B, 0xBBAB, 0x9ABB,
0x754A, 0x545A, 0x376A, 0x167A, 0xF10A, 0xD01A, 0xB32A, 0x923A,
0x2EFD, 0x0FED, 0x6CDD, 0x4DCD, 0xAABD, 0x8BAD, 0xE89D, 0xC98D,
0x267C, 0x076C, 0x645C, 0x454C, 0xA23C, 0x832C, 0xE01C, 0xC10C,
0x1FEF, 0x3EFF, 0x5DCF, 0x7CDF, 0x9BAF, 0xBABF, 0xD98F, 0xF89F,
0x176E, 0x367E, 0x554E, 0x745E, 0x932E, 0xB23E, 0xD10E, 0xF01E,
0x0001
},
[AV_CRC_32_IEEE] = {
0x00000000, 0xB71DC104, 0x6E3B8209, 0xD926430D, 0xDC760413, 0x6B6BC517,
0xB24D861A, 0x0550471E, 0xB8ED0826, 0x0FF0C922, 0xD6D68A2F, 0x61CB4B2B,
0x649B0C35, 0xD386CD31, 0x0AA08E3C, 0xBDBD4F38, 0x70DB114C, 0xC7C6D048,
0x1EE09345, 0xA9FD5241, 0xACAD155F, 0x1BB0D45B, 0xC2969756, 0x758B5652,
0xC836196A, 0x7F2BD86E, 0xA60D9B63, 0x11105A67, 0x14401D79, 0xA35DDC7D,
0x7A7B9F70, 0xCD665E74, 0xE0B62398, 0x57ABE29C, 0x8E8DA191, 0x39906095,
0x3CC0278B, 0x8BDDE68F, 0x52FBA582, 0xE5E66486, 0x585B2BBE, 0xEF46EABA,
0x3660A9B7, 0x817D68B3, 0x842D2FAD, 0x3330EEA9, 0xEA16ADA4, 0x5D0B6CA0,
0x906D32D4, 0x2770F3D0, 0xFE56B0DD, 0x494B71D9, 0x4C1B36C7, 0xFB06F7C3,
0x2220B4CE, 0x953D75CA, 0x28803AF2, 0x9F9DFBF6, 0x46BBB8FB, 0xF1A679FF,
0xF4F63EE1, 0x43EBFFE5, 0x9ACDBCE8, 0x2DD07DEC, 0x77708634, 0xC06D4730,
0x194B043D, 0xAE56C539, 0xAB068227, 0x1C1B4323, 0xC53D002E, 0x7220C12A,
0xCF9D8E12, 0x78804F16, 0xA1A60C1B, 0x16BBCD1F, 0x13EB8A01, 0xA4F64B05,
0x7DD00808, 0xCACDC90C, 0x07AB9778, 0xB0B6567C, 0x69901571, 0xDE8DD475,
0xDBDD936B, 0x6CC0526F, 0xB5E61162, 0x02FBD066, 0xBF469F5E, 0x085B5E5A,
0xD17D1D57, 0x6660DC53, 0x63309B4D, 0xD42D5A49, 0x0D0B1944, 0xBA16D840,
0x97C6A5AC, 0x20DB64A8, 0xF9FD27A5, 0x4EE0E6A1, 0x4BB0A1BF, 0xFCAD60BB,
0x258B23B6, 0x9296E2B2, 0x2F2BAD8A, 0x98366C8E, 0x41102F83, 0xF60DEE87,
0xF35DA999, 0x4440689D, 0x9D662B90, 0x2A7BEA94, 0xE71DB4E0, 0x500075E4,
0x892636E9, 0x3E3BF7ED, 0x3B6BB0F3, 0x8C7671F7, 0x555032FA, 0xE24DF3FE,
0x5FF0BCC6, 0xE8ED7DC2, 0x31CB3ECF, 0x86D6FFCB, 0x8386B8D5, 0x349B79D1,
0xEDBD3ADC, 0x5AA0FBD8, 0xEEE00C69, 0x59FDCD6D, 0x80DB8E60, 0x37C64F64,
0x3296087A, 0x858BC97E, 0x5CAD8A73, 0xEBB04B77, 0x560D044F, 0xE110C54B,
0x38368646, 0x8F2B4742, 0x8A7B005C, 0x3D66C158, 0xE4408255, 0x535D4351,
0x9E3B1D25, 0x2926DC21, 0xF0009F2C, 0x471D5E28, 0x424D1936, 0xF550D832,
0x2C769B3F, 0x9B6B5A3B, 0x26D61503, 0x91CBD407, 0x48ED970A, 0xFFF0560E,
0xFAA01110, 0x4DBDD014, 0x949B9319, 0x2386521D, 0x0E562FF1, 0xB94BEEF5,
0x606DADF8, 0xD7706CFC, 0xD2202BE2, 0x653DEAE6, 0xBC1BA9EB, 0x0B0668EF,
0xB6BB27D7, 0x01A6E6D3, 0xD880A5DE, 0x6F9D64DA, 0x6ACD23C4, 0xDDD0E2C0,
0x04F6A1CD, 0xB3EB60C9, 0x7E8D3EBD, 0xC990FFB9, 0x10B6BCB4, 0xA7AB7DB0,
0xA2FB3AAE, 0x15E6FBAA, 0xCCC0B8A7, 0x7BDD79A3, 0xC660369B, 0x717DF79F,
0xA85BB492, 0x1F467596, 0x1A163288, 0xAD0BF38C, 0x742DB081, 0xC3307185,
0x99908A5D, 0x2E8D4B59, 0xF7AB0854, 0x40B6C950, 0x45E68E4E, 0xF2FB4F4A,
0x2BDD0C47, 0x9CC0CD43, 0x217D827B, 0x9660437F, 0x4F460072, 0xF85BC176,
0xFD0B8668, 0x4A16476C, 0x93300461, 0x242DC565, 0xE94B9B11, 0x5E565A15,
0x87701918, 0x306DD81C, 0x353D9F02, 0x82205E06, 0x5B061D0B, 0xEC1BDC0F,
0x51A69337, 0xE6BB5233, 0x3F9D113E, 0x8880D03A, 0x8DD09724, 0x3ACD5620,
0xE3EB152D, 0x54F6D429, 0x7926A9C5, 0xCE3B68C1, 0x171D2BCC, 0xA000EAC8,
0xA550ADD6, 0x124D6CD2, 0xCB6B2FDF, 0x7C76EEDB, 0xC1CBA1E3, 0x76D660E7,
0xAFF023EA, 0x18EDE2EE, 0x1DBDA5F0, 0xAAA064F4, 0x738627F9, 0xC49BE6FD,
0x09FDB889, 0xBEE0798D, 0x67C63A80, 0xD0DBFB84, 0xD58BBC9A, 0x62967D9E,
0xBBB03E93, 0x0CADFF97, 0xB110B0AF, 0x060D71AB, 0xDF2B32A6, 0x6836F3A2,
0x6D66B4BC, 0xDA7B75B8, 0x035D36B5, 0xB440F7B1, 0x00000001
},
[AV_CRC_32_IEEE_LE] = {
0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F,
0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2,
0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9,
0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C,
0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423,
0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106,
0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D,
0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950,
0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7,
0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA,
0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84,
0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB,
0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E,
0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55,
0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28,
0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F,
0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242,
0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69,
0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC,
0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D, 0x00000001
},
};
#endif /* FFMPEG_CRC_DATA_H */

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/*
* DES encryption/decryption
* Copyright (c) 2007 Reimar Doeffinger
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <inttypes.h>
#include "common.h"
#include "des.h"
#define T(a, b, c, d, e, f, g, h) 64-a,64-b,64-c,64-d,64-e,64-f,64-g,64-h
static const uint8_t IP_shuffle[] = {
T(58, 50, 42, 34, 26, 18, 10, 2),
T(60, 52, 44, 36, 28, 20, 12, 4),
T(62, 54, 46, 38, 30, 22, 14, 6),
T(64, 56, 48, 40, 32, 24, 16, 8),
T(57, 49, 41, 33, 25, 17, 9, 1),
T(59, 51, 43, 35, 27, 19, 11, 3),
T(61, 53, 45, 37, 29, 21, 13, 5),
T(63, 55, 47, 39, 31, 23, 15, 7)
};
#undef T
#define T(a, b, c, d) 32-a,32-b,32-c,32-d
static const uint8_t P_shuffle[] = {
T(16, 7, 20, 21),
T(29, 12, 28, 17),
T( 1, 15, 23, 26),
T( 5, 18, 31, 10),
T( 2, 8, 24, 14),
T(32, 27, 3, 9),
T(19, 13, 30, 6),
T(22, 11, 4, 25)
};
#undef T
#define T(a, b, c, d, e, f, g) 64-a,64-b,64-c,64-d,64-e,64-f,64-g
static const uint8_t PC1_shuffle[] = {
T(57, 49, 41, 33, 25, 17, 9),
T( 1, 58, 50, 42, 34, 26, 18),
T(10, 2, 59, 51, 43, 35, 27),
T(19, 11, 3, 60, 52, 44, 36),
T(63, 55, 47, 39, 31, 23, 15),
T( 7, 62, 54, 46, 38, 30, 22),
T(14, 6, 61, 53, 45, 37, 29),
T(21, 13, 5, 28, 20, 12, 4)
};
#undef T
#define T(a, b, c, d, e, f) 56-a,56-b,56-c,56-d,56-e,56-f
static const uint8_t PC2_shuffle[] = {
T(14, 17, 11, 24, 1, 5),
T( 3, 28, 15, 6, 21, 10),
T(23, 19, 12, 4, 26, 8),
T(16, 7, 27, 20, 13, 2),
T(41, 52, 31, 37, 47, 55),
T(30, 40, 51, 45, 33, 48),
T(44, 49, 39, 56, 34, 53),
T(46, 42, 50, 36, 29, 32)
};
#undef T
#ifdef CONFIG_SMALL
static const uint8_t S_boxes[8][32] = {
{
0x0e, 0xf4, 0x7d, 0x41, 0xe2, 0x2f, 0xdb, 0x18, 0xa3, 0x6a, 0xc6, 0xbc, 0x95, 0x59, 0x30, 0x87,
0xf4, 0xc1, 0x8e, 0x28, 0x4d, 0x96, 0x12, 0x7b, 0x5f, 0xbc, 0x39, 0xe7, 0xa3, 0x0a, 0x65, 0xd0,
}, {
0x3f, 0xd1, 0x48, 0x7e, 0xf6, 0x2b, 0x83, 0xe4, 0xc9, 0x07, 0x12, 0xad, 0x6c, 0x90, 0xb5, 0x5a,
0xd0, 0x8e, 0xa7, 0x1b, 0x3a, 0xf4, 0x4d, 0x21, 0xb5, 0x68, 0x7c, 0xc6, 0x09, 0x53, 0xe2, 0x9f,
}, {
0xda, 0x70, 0x09, 0x9e, 0x36, 0x43, 0x6f, 0xa5, 0x21, 0x8d, 0x5c, 0xe7, 0xcb, 0xb4, 0xf2, 0x18,
0x1d, 0xa6, 0xd4, 0x09, 0x68, 0x9f, 0x83, 0x70, 0x4b, 0xf1, 0xe2, 0x3c, 0xb5, 0x5a, 0x2e, 0xc7,
}, {
0xd7, 0x8d, 0xbe, 0x53, 0x60, 0xf6, 0x09, 0x3a, 0x41, 0x72, 0x28, 0xc5, 0x1b, 0xac, 0xe4, 0x9f,
0x3a, 0xf6, 0x09, 0x60, 0xac, 0x1b, 0xd7, 0x8d, 0x9f, 0x41, 0x53, 0xbe, 0xc5, 0x72, 0x28, 0xe4,
}, {
0xe2, 0xbc, 0x24, 0xc1, 0x47, 0x7a, 0xdb, 0x16, 0x58, 0x05, 0xf3, 0xaf, 0x3d, 0x90, 0x8e, 0x69,
0xb4, 0x82, 0xc1, 0x7b, 0x1a, 0xed, 0x27, 0xd8, 0x6f, 0xf9, 0x0c, 0x95, 0xa6, 0x43, 0x50, 0x3e,
}, {
0xac, 0xf1, 0x4a, 0x2f, 0x79, 0xc2, 0x96, 0x58, 0x60, 0x1d, 0xd3, 0xe4, 0x0e, 0xb7, 0x35, 0x8b,
0x49, 0x3e, 0x2f, 0xc5, 0x92, 0x58, 0xfc, 0xa3, 0xb7, 0xe0, 0x14, 0x7a, 0x61, 0x0d, 0x8b, 0xd6,
}, {
0xd4, 0x0b, 0xb2, 0x7e, 0x4f, 0x90, 0x18, 0xad, 0xe3, 0x3c, 0x59, 0xc7, 0x25, 0xfa, 0x86, 0x61,
0x61, 0xb4, 0xdb, 0x8d, 0x1c, 0x43, 0xa7, 0x7e, 0x9a, 0x5f, 0x06, 0xf8, 0xe0, 0x25, 0x39, 0xc2,
}, {
0x1d, 0xf2, 0xd8, 0x84, 0xa6, 0x3f, 0x7b, 0x41, 0xca, 0x59, 0x63, 0xbe, 0x05, 0xe0, 0x9c, 0x27,
0x27, 0x1b, 0xe4, 0x71, 0x49, 0xac, 0x8e, 0xd2, 0xf0, 0xc6, 0x9a, 0x0d, 0x3f, 0x53, 0x65, 0xb8,
}
};
#else
/**
* This table contains the results of applying both the S-box and P-shuffle.
* It can be regenerated by compiling this file with -DCONFIG_SMALL -DTEST -DGENTABLES
*/
static const uint32_t S_boxes_P_shuffle[8][64] = {
{
0x00808200, 0x00000000, 0x00008000, 0x00808202, 0x00808002, 0x00008202, 0x00000002, 0x00008000,
0x00000200, 0x00808200, 0x00808202, 0x00000200, 0x00800202, 0x00808002, 0x00800000, 0x00000002,
0x00000202, 0x00800200, 0x00800200, 0x00008200, 0x00008200, 0x00808000, 0x00808000, 0x00800202,
0x00008002, 0x00800002, 0x00800002, 0x00008002, 0x00000000, 0x00000202, 0x00008202, 0x00800000,
0x00008000, 0x00808202, 0x00000002, 0x00808000, 0x00808200, 0x00800000, 0x00800000, 0x00000200,
0x00808002, 0x00008000, 0x00008200, 0x00800002, 0x00000200, 0x00000002, 0x00800202, 0x00008202,
0x00808202, 0x00008002, 0x00808000, 0x00800202, 0x00800002, 0x00000202, 0x00008202, 0x00808200,
0x00000202, 0x00800200, 0x00800200, 0x00000000, 0x00008002, 0x00008200, 0x00000000, 0x00808002,
},
{
0x40084010, 0x40004000, 0x00004000, 0x00084010, 0x00080000, 0x00000010, 0x40080010, 0x40004010,
0x40000010, 0x40084010, 0x40084000, 0x40000000, 0x40004000, 0x00080000, 0x00000010, 0x40080010,
0x00084000, 0x00080010, 0x40004010, 0x00000000, 0x40000000, 0x00004000, 0x00084010, 0x40080000,
0x00080010, 0x40000010, 0x00000000, 0x00084000, 0x00004010, 0x40084000, 0x40080000, 0x00004010,
0x00000000, 0x00084010, 0x40080010, 0x00080000, 0x40004010, 0x40080000, 0x40084000, 0x00004000,
0x40080000, 0x40004000, 0x00000010, 0x40084010, 0x00084010, 0x00000010, 0x00004000, 0x40000000,
0x00004010, 0x40084000, 0x00080000, 0x40000010, 0x00080010, 0x40004010, 0x40000010, 0x00080010,
0x00084000, 0x00000000, 0x40004000, 0x00004010, 0x40000000, 0x40080010, 0x40084010, 0x00084000,
},
{
0x00000104, 0x04010100, 0x00000000, 0x04010004, 0x04000100, 0x00000000, 0x00010104, 0x04000100,
0x00010004, 0x04000004, 0x04000004, 0x00010000, 0x04010104, 0x00010004, 0x04010000, 0x00000104,
0x04000000, 0x00000004, 0x04010100, 0x00000100, 0x00010100, 0x04010000, 0x04010004, 0x00010104,
0x04000104, 0x00010100, 0x00010000, 0x04000104, 0x00000004, 0x04010104, 0x00000100, 0x04000000,
0x04010100, 0x04000000, 0x00010004, 0x00000104, 0x00010000, 0x04010100, 0x04000100, 0x00000000,
0x00000100, 0x00010004, 0x04010104, 0x04000100, 0x04000004, 0x00000100, 0x00000000, 0x04010004,
0x04000104, 0x00010000, 0x04000000, 0x04010104, 0x00000004, 0x00010104, 0x00010100, 0x04000004,
0x04010000, 0x04000104, 0x00000104, 0x04010000, 0x00010104, 0x00000004, 0x04010004, 0x00010100,
},
{
0x80401000, 0x80001040, 0x80001040, 0x00000040, 0x00401040, 0x80400040, 0x80400000, 0x80001000,
0x00000000, 0x00401000, 0x00401000, 0x80401040, 0x80000040, 0x00000000, 0x00400040, 0x80400000,
0x80000000, 0x00001000, 0x00400000, 0x80401000, 0x00000040, 0x00400000, 0x80001000, 0x00001040,
0x80400040, 0x80000000, 0x00001040, 0x00400040, 0x00001000, 0x00401040, 0x80401040, 0x80000040,
0x00400040, 0x80400000, 0x00401000, 0x80401040, 0x80000040, 0x00000000, 0x00000000, 0x00401000,
0x00001040, 0x00400040, 0x80400040, 0x80000000, 0x80401000, 0x80001040, 0x80001040, 0x00000040,
0x80401040, 0x80000040, 0x80000000, 0x00001000, 0x80400000, 0x80001000, 0x00401040, 0x80400040,
0x80001000, 0x00001040, 0x00400000, 0x80401000, 0x00000040, 0x00400000, 0x00001000, 0x00401040,
},
{
0x00000080, 0x01040080, 0x01040000, 0x21000080, 0x00040000, 0x00000080, 0x20000000, 0x01040000,
0x20040080, 0x00040000, 0x01000080, 0x20040080, 0x21000080, 0x21040000, 0x00040080, 0x20000000,
0x01000000, 0x20040000, 0x20040000, 0x00000000, 0x20000080, 0x21040080, 0x21040080, 0x01000080,
0x21040000, 0x20000080, 0x00000000, 0x21000000, 0x01040080, 0x01000000, 0x21000000, 0x00040080,
0x00040000, 0x21000080, 0x00000080, 0x01000000, 0x20000000, 0x01040000, 0x21000080, 0x20040080,
0x01000080, 0x20000000, 0x21040000, 0x01040080, 0x20040080, 0x00000080, 0x01000000, 0x21040000,
0x21040080, 0x00040080, 0x21000000, 0x21040080, 0x01040000, 0x00000000, 0x20040000, 0x21000000,
0x00040080, 0x01000080, 0x20000080, 0x00040000, 0x00000000, 0x20040000, 0x01040080, 0x20000080,
},
{
0x10000008, 0x10200000, 0x00002000, 0x10202008, 0x10200000, 0x00000008, 0x10202008, 0x00200000,
0x10002000, 0x00202008, 0x00200000, 0x10000008, 0x00200008, 0x10002000, 0x10000000, 0x00002008,
0x00000000, 0x00200008, 0x10002008, 0x00002000, 0x00202000, 0x10002008, 0x00000008, 0x10200008,
0x10200008, 0x00000000, 0x00202008, 0x10202000, 0x00002008, 0x00202000, 0x10202000, 0x10000000,
0x10002000, 0x00000008, 0x10200008, 0x00202000, 0x10202008, 0x00200000, 0x00002008, 0x10000008,
0x00200000, 0x10002000, 0x10000000, 0x00002008, 0x10000008, 0x10202008, 0x00202000, 0x10200000,
0x00202008, 0x10202000, 0x00000000, 0x10200008, 0x00000008, 0x00002000, 0x10200000, 0x00202008,
0x00002000, 0x00200008, 0x10002008, 0x00000000, 0x10202000, 0x10000000, 0x00200008, 0x10002008,
},
{
0x00100000, 0x02100001, 0x02000401, 0x00000000, 0x00000400, 0x02000401, 0x00100401, 0x02100400,
0x02100401, 0x00100000, 0x00000000, 0x02000001, 0x00000001, 0x02000000, 0x02100001, 0x00000401,
0x02000400, 0x00100401, 0x00100001, 0x02000400, 0x02000001, 0x02100000, 0x02100400, 0x00100001,
0x02100000, 0x00000400, 0x00000401, 0x02100401, 0x00100400, 0x00000001, 0x02000000, 0x00100400,
0x02000000, 0x00100400, 0x00100000, 0x02000401, 0x02000401, 0x02100001, 0x02100001, 0x00000001,
0x00100001, 0x02000000, 0x02000400, 0x00100000, 0x02100400, 0x00000401, 0x00100401, 0x02100400,
0x00000401, 0x02000001, 0x02100401, 0x02100000, 0x00100400, 0x00000000, 0x00000001, 0x02100401,
0x00000000, 0x00100401, 0x02100000, 0x00000400, 0x02000001, 0x02000400, 0x00000400, 0x00100001,
},
{
0x08000820, 0x00000800, 0x00020000, 0x08020820, 0x08000000, 0x08000820, 0x00000020, 0x08000000,
0x00020020, 0x08020000, 0x08020820, 0x00020800, 0x08020800, 0x00020820, 0x00000800, 0x00000020,
0x08020000, 0x08000020, 0x08000800, 0x00000820, 0x00020800, 0x00020020, 0x08020020, 0x08020800,
0x00000820, 0x00000000, 0x00000000, 0x08020020, 0x08000020, 0x08000800, 0x00020820, 0x00020000,
0x00020820, 0x00020000, 0x08020800, 0x00000800, 0x00000020, 0x08020020, 0x00000800, 0x00020820,
0x08000800, 0x00000020, 0x08000020, 0x08020000, 0x08020020, 0x08000000, 0x00020000, 0x08000820,
0x00000000, 0x08020820, 0x00020020, 0x08000020, 0x08020000, 0x08000800, 0x08000820, 0x00000000,
0x08020820, 0x00020800, 0x00020800, 0x00000820, 0x00000820, 0x00020020, 0x08000000, 0x08020800,
},
};
#endif
static uint64_t shuffle(uint64_t in, const uint8_t *shuffle, int shuffle_len) {
int i;
uint64_t res = 0;
for (i = 0; i < shuffle_len; i++)
res += res + ((in >> *shuffle++) & 1);
return res;
}
static uint64_t shuffle_inv(uint64_t in, const uint8_t *shuffle, int shuffle_len) {
int i;
uint64_t res = 0;
shuffle += shuffle_len - 1;
for (i = 0; i < shuffle_len; i++) {
res |= (in & 1) << *shuffle--;
in >>= 1;
}
return res;
}
static uint32_t f_func(uint32_t r, uint64_t k) {
int i;
uint32_t out = 0;
// rotate to get first part of E-shuffle in the lowest 6 bits
r = (r << 1) | (r >> 31);
// apply S-boxes, those compress the data again from 8 * 6 to 8 * 4 bits
for (i = 7; i >= 0; i--) {
uint8_t tmp = (r ^ k) & 0x3f;
#ifdef CONFIG_SMALL
uint8_t v = S_boxes[i][tmp >> 1];
if (tmp & 1) v >>= 4;
out = (out >> 4) | (v << 28);
#else
out |= S_boxes_P_shuffle[i][tmp];
#endif
// get next 6 bits of E-shuffle and round key k into the lowest bits
r = (r >> 4) | (r << 28);
k >>= 6;
}
#ifdef CONFIG_SMALL
out = shuffle(out, P_shuffle, sizeof(P_shuffle));
#endif
return out;
}
/**
* \brief rotate the two halves of the expanded 56 bit key each 1 bit left
*
* Note: the specification calls this "shift", so I kept it although
* it is confusing.
*/
static uint64_t key_shift_left(uint64_t CDn) {
uint64_t carries = (CDn >> 27) & 0x10000001;
CDn <<= 1;
CDn &= ~0x10000001;
CDn |= carries;
return CDn;
}
uint64_t ff_des_encdec(uint64_t in, uint64_t key, int decrypt) {
int i;
uint64_t K[16];
// discard parity bits from key and shuffle it into C and D parts
uint64_t CDn = shuffle(key, PC1_shuffle, sizeof(PC1_shuffle));
// generate round keys
for (i = 0; i < 16; i++) {
CDn = key_shift_left(CDn);
if (i > 1 && i != 8 && i != 15)
CDn = key_shift_left(CDn);
K[i] = shuffle(CDn, PC2_shuffle, sizeof(PC2_shuffle));
}
// used to apply round keys in reverse order for decryption
decrypt = decrypt ? 15 : 0;
// shuffle irrelevant to security but to ease hardware implementations
in = shuffle(in, IP_shuffle, sizeof(IP_shuffle));
for (i = 0; i < 16; i++) {
uint32_t f_res;
f_res = f_func(in, K[decrypt ^ i]);
in = (in << 32) | (in >> 32);
in ^= f_res;
}
in = (in << 32) | (in >> 32);
// reverse shuffle used to ease hardware implementations
in = shuffle_inv(in, IP_shuffle, sizeof(IP_shuffle));
return in;
}
#ifdef TEST
#undef printf
#undef rand
#undef srand
#include <stdlib.h>
#include <stdio.h>
#include <sys/time.h>
static uint64_t rand64(void) {
uint64_t r = rand();
r = (r << 32) | rand();
return r;
}
int main(void) {
int i, j;
struct timeval tv;
uint64_t key;
uint64_t data;
uint64_t ct;
gettimeofday(&tv, NULL);
srand(tv.tv_sec * 1000 * 1000 + tv.tv_usec);
key = 0x123456789abcdef0ULL;
data = 0xfedcba9876543210ULL;
if (ff_des_encdec(data, key, 0) != 0x4ab65b3d4b061518ULL) {
printf("Test 1 failed\n");
return 1;
}
for (i = 0; i < 1000000; i++) {
key = rand64();
data = rand64();
ct = ff_des_encdec(data, key, 0);
if (ff_des_encdec(ct, key, 1) != data) {
printf("Test 2 failed\n");
return 1;
}
}
#ifdef GENTABLES
printf("static const uint32_t S_boxes_P_shuffle[8][64] = {\n");
for (i = 0; i < 8; i++) {
printf(" {");
for (j = 0; j < 64; j++) {
uint32_t v = S_boxes[i][j >> 1];
v = j & 1 ? v >> 4 : v & 0xf;
v <<= 28 - 4 * i;
v = shuffle(v, P_shuffle, sizeof(P_shuffle));
printf((j & 7) == 0 ? "\n " : " ");
printf("0x%08X,", v);
}
printf("\n },\n");
}
printf("};\n");
#endif
return 0;
}
#endif

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/*
* DES encryption/decryption
* Copyright (c) 2007 Reimar Doeffinger
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_DES_H
#define FFMPEG_DES_H
#include <stdint.h>
#include "common.h"
/**
* \brief en- or decrypt an 64-bit block of data with DES
* \param in data to process.
* \param key key to use for en-/decryption.
* \param decrypt if 0 encrypt, else decrypt.
* \return processed data
*
* If your input data is in 8-bit blocks treat it as big-endian
* (use e.g. AV_RB64 and AV_WB64).
*/
uint64_t ff_des_encdec(uint64_t in, uint64_t key, int decrypt) av_const;
#endif /* FFMPEG_DES_H */

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/*
* A very simple circular buffer FIFO implementation
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
* Copyright (c) 2006 Roman Shaposhnik
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "common.h"
#include "fifo.h"
int av_fifo_init(AVFifoBuffer *f, unsigned int size)
{
size= FFMAX(size, size+1);
f->wptr = f->rptr =
f->buffer = av_malloc(size);
f->end = f->buffer + size;
if (!f->buffer)
return -1;
return 0;
}
void av_fifo_free(AVFifoBuffer *f)
{
av_free(f->buffer);
}
int av_fifo_size(AVFifoBuffer *f)
{
int size = f->wptr - f->rptr;
if (size < 0)
size += f->end - f->buffer;
return size;
}
int av_fifo_read(AVFifoBuffer *f, uint8_t *buf, int buf_size)
{
return av_fifo_generic_read(f, buf_size, NULL, buf);
}
#if LIBAVUTIL_VERSION_MAJOR < 50
void av_fifo_realloc(AVFifoBuffer *f, unsigned int new_size) {
av_fifo_realloc2(f, new_size);
}
#endif
int av_fifo_realloc2(AVFifoBuffer *f, unsigned int new_size) {
unsigned int old_size= f->end - f->buffer;
if(old_size <= new_size){
int len= av_fifo_size(f);
AVFifoBuffer f2;
if (av_fifo_init(&f2, new_size) < 0)
return -1;
av_fifo_read(f, f2.buffer, len);
f2.wptr += len;
av_free(f->buffer);
*f= f2;
}
return 0;
}
void av_fifo_write(AVFifoBuffer *f, const uint8_t *buf, int size)
{
av_fifo_generic_write(f, (void *)buf, size, NULL);
}
int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int (*func)(void*, void*, int))
{
int total = size;
do {
int len = FFMIN(f->end - f->wptr, size);
if(func) {
if(func(src, f->wptr, len) <= 0)
break;
} else {
memcpy(f->wptr, src, len);
src = (uint8_t*)src + len;
}
f->wptr += len;
if (f->wptr >= f->end)
f->wptr = f->buffer;
size -= len;
} while (size > 0);
return total - size;
}
int av_fifo_generic_read(AVFifoBuffer *f, int buf_size, void (*func)(void*, void*, int), void* dest)
{
do {
int len = FFMIN(f->end - f->rptr, buf_size);
if(func) func(dest, f->rptr, len);
else{
memcpy(dest, f->rptr, len);
dest = (uint8_t*)dest + len;
}
av_fifo_drain(f, len);
buf_size -= len;
} while (buf_size > 0);
return 0;
}
/** discard data from the fifo */
void av_fifo_drain(AVFifoBuffer *f, int size)
{
f->rptr += size;
if (f->rptr >= f->end)
f->rptr -= f->end - f->buffer;
}

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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file fifo.h
* A very simple circular buffer FIFO implementation.
*/
#ifndef FFMPEG_FIFO_H
#define FFMPEG_FIFO_H
#include <stdint.h>
#include "common.h"
typedef struct AVFifoBuffer {
uint8_t *buffer;
uint8_t *rptr, *wptr, *end;
} AVFifoBuffer;
/**
* Initializes an AVFifoBuffer.
* @param *f AVFifoBuffer to initialize
* @param size of FIFO
* @return <0 for failure >=0 otherwise
*/
int av_fifo_init(AVFifoBuffer *f, unsigned int size);
/**
* Frees an AVFifoBuffer.
* @param *f AVFifoBuffer to free
*/
void av_fifo_free(AVFifoBuffer *f);
/**
* Returns the amount of data in bytes in the AVFifoBuffer, that is the
* amount of data you can read from it.
* @param *f AVFifoBuffer to read from
* @return size
*/
int av_fifo_size(AVFifoBuffer *f);
/**
* Reads data from an AVFifoBuffer.
* @param *f AVFifoBuffer to read from
* @param *buf data destination
* @param buf_size number of bytes to read
*/
int av_fifo_read(AVFifoBuffer *f, uint8_t *buf, int buf_size);
/**
* Feeds data from an AVFifoBuffer to a user supplied callback.
* @param *f AVFifoBuffer to read from
* @param buf_size number of bytes to read
* @param *func generic read function
* @param *dest data destination
*/
int av_fifo_generic_read(AVFifoBuffer *f, int buf_size, void (*func)(void*, void*, int), void* dest);
/**
* Writes data into an AVFifoBuffer.
* @param *f AVFifoBuffer to write to
* @param *buf data source
* @param size data size
*/
attribute_deprecated void av_fifo_write(AVFifoBuffer *f, const uint8_t *buf, int size);
/**
* Feeds data from a user supplied callback to an AVFifoBuffer.
* @param *f AVFifoBuffer to write to
* @param *src data source
* @param size number of bytes to write
* @param *func generic write function. First parameter is src,
* second is dest_buf, third is dest_buf_size.
* func must return the number of bytes written to dest_buf, or <= 0 to
* indicate no more data available to write.
* If func is NULL, src is interpreted as a simple byte array for source data.
* @return the number of bytes written to the fifo.
*/
int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int (*func)(void*, void*, int));
#if LIBAVUTIL_VERSION_MAJOR < 50
/**
* Resizes an AVFifoBuffer.
* @param *f AVFifoBuffer to resize
* @param size new AVFifoBuffer size in bytes
* @see av_fifo_realloc2()
*/
attribute_deprecated void av_fifo_realloc(AVFifoBuffer *f, unsigned int size);
#endif
/**
* Resizes an AVFifoBuffer.
* @param *f AVFifoBuffer to resize
* @param size new AVFifoBuffer size in bytes
* @return <0 for failure >=0 otherwise
*/
int av_fifo_realloc2(AVFifoBuffer *f, unsigned int size);
/**
* Reads and discards the specified amount of data from an AVFifoBuffer.
* @param *f AVFifoBuffer to read from
* @param size amount of data to read in bytes
*/
void av_fifo_drain(AVFifoBuffer *f, int size);
static inline uint8_t av_fifo_peek(AVFifoBuffer *f, int offs)
{
uint8_t *ptr = f->rptr + offs;
if (ptr >= f->end)
ptr -= f->end - f->buffer;
return *ptr;
}
#endif /* FFMPEG_FIFO_H */

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/*
* arbitrary precision integers
* Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file integer.c
* arbitrary precision integers.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#include "common.h"
#include "integer.h"
AVInteger av_add_i(AVInteger a, AVInteger b){
int i, carry=0;
for(i=0; i<AV_INTEGER_SIZE; i++){
carry= (carry>>16) + a.v[i] + b.v[i];
a.v[i]= carry;
}
return a;
}
AVInteger av_sub_i(AVInteger a, AVInteger b){
int i, carry=0;
for(i=0; i<AV_INTEGER_SIZE; i++){
carry= (carry>>16) + a.v[i] - b.v[i];
a.v[i]= carry;
}
return a;
}
int av_log2_i(AVInteger a){
int i;
for(i=AV_INTEGER_SIZE-1; i>=0; i--){
if(a.v[i])
return av_log2_16bit(a.v[i]) + 16*i;
}
return -1;
}
AVInteger av_mul_i(AVInteger a, AVInteger b){
AVInteger out;
int i, j;
int na= (av_log2_i(a)+16) >> 4;
int nb= (av_log2_i(b)+16) >> 4;
memset(&out, 0, sizeof(out));
for(i=0; i<na; i++){
unsigned int carry=0;
if(a.v[i])
for(j=i; j<AV_INTEGER_SIZE && j-i<=nb; j++){
carry= (carry>>16) + out.v[j] + a.v[i]*b.v[j-i];
out.v[j]= carry;
}
}
return out;
}
int av_cmp_i(AVInteger a, AVInteger b){
int i;
int v= (int16_t)a.v[AV_INTEGER_SIZE-1] - (int16_t)b.v[AV_INTEGER_SIZE-1];
if(v) return (v>>16)|1;
for(i=AV_INTEGER_SIZE-2; i>=0; i--){
int v= a.v[i] - b.v[i];
if(v) return (v>>16)|1;
}
return 0;
}
AVInteger av_shr_i(AVInteger a, int s){
AVInteger out;
int i;
for(i=0; i<AV_INTEGER_SIZE; i++){
unsigned int index= i + (s>>4);
unsigned int v=0;
if(index+1<AV_INTEGER_SIZE) v = a.v[index+1]<<16;
if(index <AV_INTEGER_SIZE) v+= a.v[index ];
out.v[i]= v >> (s&15);
}
return out;
}
AVInteger av_mod_i(AVInteger *quot, AVInteger a, AVInteger b){
int i= av_log2_i(a) - av_log2_i(b);
AVInteger quot_temp;
if(!quot) quot = &quot_temp;
assert((int16_t)a[AV_INTEGER_SIZE-1] >= 0 && (int16_t)b[AV_INTEGER_SIZE-1] >= 0);
assert(av_log2(b)>=0);
if(i > 0)
b= av_shr_i(b, -i);
memset(quot, 0, sizeof(AVInteger));
while(i-- >= 0){
*quot= av_shr_i(*quot, -1);
if(av_cmp_i(a, b) >= 0){
a= av_sub_i(a, b);
quot->v[0] += 1;
}
b= av_shr_i(b, 1);
}
return a;
}
AVInteger av_div_i(AVInteger a, AVInteger b){
AVInteger quot;
av_mod_i(&quot, a, b);
return quot;
}
AVInteger av_int2i(int64_t a){
AVInteger out;
int i;
for(i=0; i<AV_INTEGER_SIZE; i++){
out.v[i]= a;
a>>=16;
}
return out;
}
int64_t av_i2int(AVInteger a){
int i;
int64_t out=(int8_t)a.v[AV_INTEGER_SIZE-1];
for(i= AV_INTEGER_SIZE-2; i>=0; i--){
out = (out<<16) + a.v[i];
}
return out;
}
#ifdef TEST
#undef NDEBUG
#include <assert.h>
const uint8_t ff_log2_tab[256]={
0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
};
int main(void){
int64_t a,b;
for(a=7; a<256*256*256; a+=13215){
for(b=3; b<256*256*256; b+=27118){
AVInteger ai= av_int2i(a);
AVInteger bi= av_int2i(b);
assert(av_i2int(ai) == a);
assert(av_i2int(bi) == b);
assert(av_i2int(av_add_i(ai,bi)) == a+b);
assert(av_i2int(av_sub_i(ai,bi)) == a-b);
assert(av_i2int(av_mul_i(ai,bi)) == a*b);
assert(av_i2int(av_shr_i(ai, 9)) == a>>9);
assert(av_i2int(av_shr_i(ai,-9)) == a<<9);
assert(av_i2int(av_shr_i(ai, 17)) == a>>17);
assert(av_i2int(av_shr_i(ai,-17)) == a<<17);
assert(av_log2_i(ai) == av_log2(a));
assert(av_i2int(av_div_i(ai,bi)) == a/b);
}
}
return 0;
}
#endif

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/*
* arbitrary precision integers
* Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file integer.h
* arbitrary precision integers
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#ifndef FFMPEG_INTEGER_H
#define FFMPEG_INTEGER_H
#include <stdint.h>
#include "common.h"
#define AV_INTEGER_SIZE 8
typedef struct AVInteger{
uint16_t v[AV_INTEGER_SIZE];
} AVInteger;
AVInteger av_add_i(AVInteger a, AVInteger b) av_const;
AVInteger av_sub_i(AVInteger a, AVInteger b) av_const;
/**
* returns the rounded down value of the logarithm of base 2 of the given AVInteger.
* this is simply the index of the most significant bit which is 1. Or 0 of all bits are 0
*/
int av_log2_i(AVInteger a) av_const;
AVInteger av_mul_i(AVInteger a, AVInteger b) av_const;
/**
* returns 0 if a==b, 1 if a>b and -1 if a<b.
*/
int av_cmp_i(AVInteger a, AVInteger b) av_const;
/**
* bitwise shift.
* @param s the number of bits by which the value should be shifted right, may be negative for shifting left
*/
AVInteger av_shr_i(AVInteger a, int s) av_const;
/**
* returns a % b.
* @param quot a/b will be stored here
*/
AVInteger av_mod_i(AVInteger *quot, AVInteger a, AVInteger b);
/**
* returns a/b.
*/
AVInteger av_div_i(AVInteger a, AVInteger b) av_const;
/**
* converts the given int64_t to an AVInteger.
*/
AVInteger av_int2i(int64_t a) av_const;
/**
* converts the given AVInteger to an int64_t.
* if the AVInteger is too large to fit into an int64_t,
* then only the least significant 64bit will be used
*/
int64_t av_i2int(AVInteger a) av_const;
#endif /* FFMPEG_INTEGER_H */

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file internal.h
* common internal api header.
*/
#ifndef FFMPEG_INTERNAL_H
#define FFMPEG_INTERNAL_H
#if !defined(DEBUG) && !defined(NDEBUG)
# define NDEBUG
#endif
#include <stdint.h>
#include <stddef.h>
#include <assert.h>
#ifndef attribute_align_arg
#if defined(__GNUC__) && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__>1)
# define attribute_align_arg __attribute__((force_align_arg_pointer))
#else
# define attribute_align_arg
#endif
#endif
#ifndef attribute_used
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
# define attribute_used __attribute__((used))
#else
# define attribute_used
#endif
#endif
#ifndef INT16_MIN
#define INT16_MIN (-0x7fff-1)
#endif
#ifndef INT16_MAX
#define INT16_MAX 0x7fff
#endif
#ifndef INT32_MIN
#define INT32_MIN (-0x7fffffff-1)
#endif
#ifndef INT32_MAX
#define INT32_MAX 0x7fffffff
#endif
#ifndef UINT32_MAX
#define UINT32_MAX 0xffffffff
#endif
#ifndef INT64_MIN
#define INT64_MIN (-0x7fffffffffffffffLL-1)
#endif
#ifndef INT64_MAX
#define INT64_MAX INT64_C(9223372036854775807)
#endif
#ifndef UINT64_MAX
#define UINT64_MAX UINT64_C(0xFFFFFFFFFFFFFFFF)
#endif
#ifndef INT_BIT
# if INT_MAX != 2147483647
# define INT_BIT 64
# else
# define INT_BIT 32
# endif
#endif
#if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC)
# define PIC
#endif
#include "config.h"
#include "intreadwrite.h"
#include "bswap.h"
#ifndef offsetof
# define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F))
#endif
// Use rip-relative addressing if compiling PIC code on x86-64.
#if defined(ARCH_X86_64) && defined(PIC)
# define LOCAL_MANGLE(a) #a "(%%rip)"
#else
# define LOCAL_MANGLE(a) #a
#endif
#define MANGLE(a) EXTERN_PREFIX LOCAL_MANGLE(a)
/* debug stuff */
/* dprintf macros */
#ifdef DEBUG
# define dprintf(pctx, ...) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__)
#else
# define dprintf(pctx, ...)
#endif
#define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
/* math */
extern const uint32_t ff_inverse[256];
#if defined(ARCH_X86)
# define FASTDIV(a,b) \
({\
int ret,dmy;\
asm volatile(\
"mull %3"\
:"=d"(ret),"=a"(dmy)\
:"1"(a),"g"(ff_inverse[b])\
);\
ret;\
})
#elif defined(HAVE_ARMV6)
static inline av_const int FASTDIV(int a, int b)
{
int r;
asm volatile("cmp %2, #0 \n\t"
"smmul %0, %1, %2 \n\t"
"rsblt %0, %0, #0 \n\t"
: "=r"(r) : "r"(a), "r"(ff_inverse[b]));
return r;
}
#elif defined(ARCH_ARMV4L)
# define FASTDIV(a,b) \
({\
int ret,dmy;\
asm volatile(\
"umull %1, %0, %2, %3"\
:"=&r"(ret),"=&r"(dmy)\
:"r"(a),"r"(ff_inverse[b])\
);\
ret;\
})
#elif defined(CONFIG_FASTDIV)
# define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*ff_inverse[b])>>32))
#else
# define FASTDIV(a,b) ((a)/(b))
#endif
extern const uint8_t ff_sqrt_tab[256];
static inline int av_log2_16bit(unsigned int v);
static inline av_const unsigned int ff_sqrt(unsigned int a)
{
unsigned int b;
if(a<255) return (ff_sqrt_tab[a+1]-1)>>4;
else if(a<(1<<12)) b= ff_sqrt_tab[a>>4 ]>>2;
#ifndef CONFIG_SMALL
else if(a<(1<<14)) b= ff_sqrt_tab[a>>6 ]>>1;
else if(a<(1<<16)) b= ff_sqrt_tab[a>>8 ] ;
#endif
else{
int s= av_log2_16bit(a>>16)>>1;
unsigned int c= a>>(s+2);
b= ff_sqrt_tab[c>>(s+8)];
b= FASTDIV(c,b) + (b<<s);
}
return b - (a<b*b);
}
#if defined(ARCH_X86)
#define MASK_ABS(mask, level)\
asm volatile(\
"cltd \n\t"\
"xorl %1, %0 \n\t"\
"subl %1, %0 \n\t"\
: "+a" (level), "=&d" (mask)\
);
#else
#define MASK_ABS(mask, level)\
mask= level>>31;\
level= (level^mask)-mask;
#endif
#ifdef HAVE_CMOV
#define COPY3_IF_LT(x,y,a,b,c,d)\
asm volatile (\
"cmpl %0, %3 \n\t"\
"cmovl %3, %0 \n\t"\
"cmovl %4, %1 \n\t"\
"cmovl %5, %2 \n\t"\
: "+&r" (x), "+&r" (a), "+r" (c)\
: "r" (y), "r" (b), "r" (d)\
);
#else
#define COPY3_IF_LT(x,y,a,b,c,d)\
if((y)<(x)){\
(x)=(y);\
(a)=(b);\
(c)=(d);\
}
#endif
/* avoid usage of various functions */
#undef malloc
#define malloc please_use_av_malloc
#undef free
#define free please_use_av_free
#undef realloc
#define realloc please_use_av_realloc
#undef time
#define time time_is_forbidden_due_to_security_issues
#undef rand
#define rand rand_is_forbidden_due_to_state_trashing_use_av_random
#undef srand
#define srand srand_is_forbidden_due_to_state_trashing_use_av_init_random
#undef random
#define random random_is_forbidden_due_to_state_trashing_use_av_random
#undef sprintf
#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
#undef strcat
#define strcat strcat_is_forbidden_due_to_security_issues_use_av_strlcat
#undef exit
#define exit exit_is_forbidden
#if !(defined(LIBAVFORMAT_BUILD) || defined(FFMPEG_FRAMEHOOK_H))
#undef printf
#define printf please_use_av_log
#undef fprintf
#define fprintf please_use_av_log
#undef puts
#define puts please_use_av_log
#undef perror
#define perror please_use_av_log_instead_of_perror
#endif
#define CHECKED_ALLOCZ(p, size)\
{\
p= av_mallocz(size);\
if(p==NULL && (size)!=0){\
av_log(NULL, AV_LOG_ERROR, "Cannot allocate memory.");\
goto fail;\
}\
}
#ifndef HAVE_LLRINT
static av_always_inline av_const long long llrint(double x)
{
return rint(x);
}
#endif /* HAVE_LLRINT */
#ifndef HAVE_LRINT
static av_always_inline av_const long int lrint(double x)
{
return rint(x);
}
#endif /* HAVE_LRINT */
#ifndef HAVE_LRINTF
static av_always_inline av_const long int lrintf(float x)
{
return (int)(rint(x));
}
#endif /* HAVE_LRINTF */
#ifndef HAVE_ROUND
static av_always_inline av_const double round(double x)
{
return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
}
#endif /* HAVE_ROUND */
#ifndef HAVE_ROUNDF
static av_always_inline av_const float roundf(float x)
{
return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
}
#endif /* HAVE_ROUNDF */
#endif /* FFMPEG_INTERNAL_H */

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/*
* portable IEEE float/double read/write functions
*
* Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file intfloat_readwrite.c
* Portable IEEE float/double read/write functions.
*/
#include "common.h"
#include "intfloat_readwrite.h"
double av_int2dbl(int64_t v){
if(v+v > 0xFFEULL<<52)
return 0.0/0.0;
return ldexp(((v&((1LL<<52)-1)) + (1LL<<52)) * (v>>63|1), (v>>52&0x7FF)-1075);
}
float av_int2flt(int32_t v){
if(v+v > 0xFF000000U)
return 0.0/0.0;
return ldexp(((v&0x7FFFFF) + (1<<23)) * (v>>31|1), (v>>23&0xFF)-150);
}
double av_ext2dbl(const AVExtFloat ext){
uint64_t m = 0;
int e, i;
for (i = 0; i < 8; i++)
m = (m<<8) + ext.mantissa[i];
e = (((int)ext.exponent[0]&0x7f)<<8) | ext.exponent[1];
if (e == 0x7fff && m)
return 0.0/0.0;
e -= 16383 + 63; /* In IEEE 80 bits, the whole (i.e. 1.xxxx)
* mantissa bit is written as opposed to the
* single and double precision formats */
if (ext.exponent[0]&0x80)
m= -m;
return ldexp(m, e);
}
int64_t av_dbl2int(double d){
int e;
if ( !d) return 0;
else if(d-d) return 0x7FF0000000000000LL + ((int64_t)(d<0)<<63) + (d!=d);
d= frexp(d, &e);
return (int64_t)(d<0)<<63 | (e+1022LL)<<52 | (int64_t)((fabs(d)-0.5)*(1LL<<53));
}
int32_t av_flt2int(float d){
int e;
if ( !d) return 0;
else if(d-d) return 0x7F800000 + ((d<0)<<31) + (d!=d);
d= frexp(d, &e);
return (d<0)<<31 | (e+126)<<23 | (int64_t)((fabs(d)-0.5)*(1<<24));
}
AVExtFloat av_dbl2ext(double d){
struct AVExtFloat ext= {{0}};
int e, i; double f; uint64_t m;
f = fabs(frexp(d, &e));
if (f >= 0.5 && f < 1) {
e += 16382;
ext.exponent[0] = e>>8;
ext.exponent[1] = e;
m = (uint64_t)ldexp(f, 64);
for (i=0; i < 8; i++)
ext.mantissa[i] = m>>(56-(i<<3));
} else if (f != 0.0) {
ext.exponent[0] = 0x7f; ext.exponent[1] = 0xff;
if (f != 1/0.0)
ext.mantissa[0] = ~0;
}
if (d < 0)
ext.exponent[0] |= 0x80;
return ext;
}

40
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/*
* copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_INTFLOAT_READWRITE_H
#define FFMPEG_INTFLOAT_READWRITE_H
#include <stdint.h>
#include "common.h"
/* IEEE 80 bits extended float */
typedef struct AVExtFloat {
uint8_t exponent[2];
uint8_t mantissa[8];
} AVExtFloat;
double av_int2dbl(int64_t v) av_const;
float av_int2flt(int32_t v) av_const;
double av_ext2dbl(const AVExtFloat ext) av_const;
int64_t av_dbl2int(double d) av_const;
int32_t av_flt2int(float d) av_const;
AVExtFloat av_dbl2ext(double d) av_const;
#endif /* FFMPEG_INTFLOAT_READWRITE_H */

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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_INTREADWRITE_H
#define FFMPEG_INTREADWRITE_H
#include <stdint.h>
#include "config.h"
#include "bswap.h"
#ifdef __GNUC__
struct unaligned_64 { uint64_t l; } __attribute__((packed));
struct unaligned_32 { uint32_t l; } __attribute__((packed));
struct unaligned_16 { uint16_t l; } __attribute__((packed));
#define AV_RN16(a) (((const struct unaligned_16 *) (a))->l)
#define AV_RN32(a) (((const struct unaligned_32 *) (a))->l)
#define AV_RN64(a) (((const struct unaligned_64 *) (a))->l)
#define AV_WN16(a, b) (((struct unaligned_16 *) (a))->l) = (b)
#define AV_WN32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
#define AV_WN64(a, b) (((struct unaligned_64 *) (a))->l) = (b)
#elif defined(__DECC)
#define AV_RN16(a) (*((const __unaligned uint16_t*)(a)))
#define AV_RN32(a) (*((const __unaligned uint32_t*)(a)))
#define AV_RN64(a) (*((const __unaligned uint64_t*)(a)))
#define AV_WN16(a, b) *((__unaligned uint16_t*)(a)) = (b)
#define AV_WN32(a, b) *((__unaligned uint32_t*)(a)) = (b)
#define AV_WN64(a, b) *((__unaligned uint64_t*)(a)) = (b)
#else
#define AV_RN16(a) (*((const uint16_t*)(a)))
#define AV_RN32(a) (*((const uint32_t*)(a)))
#define AV_RN64(a) (*((const uint64_t*)(a)))
#define AV_WN16(a, b) *((uint16_t*)(a)) = (b)
#define AV_WN32(a, b) *((uint32_t*)(a)) = (b)
#define AV_WN64(a, b) *((uint64_t*)(a)) = (b)
#endif /* !__GNUC__ */
/* endian macros */
#define AV_RB8(x) (((const uint8_t*)(x))[0])
#define AV_WB8(p, d) do { ((uint8_t*)(p))[0] = (d); } while(0)
#define AV_RL8(x) AV_RB8(x)
#define AV_WL8(p, d) AV_WB8(p, d)
#ifdef HAVE_FAST_UNALIGNED
# ifdef WORDS_BIGENDIAN
# define AV_RB16(x) AV_RN16(x)
# define AV_WB16(p, d) AV_WN16(p, d)
# define AV_RL16(x) bswap_16(AV_RN16(x))
# define AV_WL16(p, d) AV_WN16(p, bswap_16(d))
# define AV_RB32(x) AV_RN32(x)
# define AV_WB32(p, d) AV_WN32(p, d)
# define AV_RL32(x) bswap_32(AV_RN32(x))
# define AV_WL32(p, d) AV_WN32(p, bswap_32(d))
# define AV_RB64(x) AV_RN64(x)
# define AV_WB64(p, d) AV_WN64(p, d)
# define AV_RL64(x) bswap_64(AV_RN64(x))
# define AV_WL64(p, d) AV_WN64(p, bswap_64(d))
# else /* WORDS_BIGENDIAN */
# define AV_RB16(x) bswap_16(AV_RN16(x))
# define AV_WB16(p, d) AV_WN16(p, bswap_16(d))
# define AV_RL16(x) AV_RN16(x)
# define AV_WL16(p, d) AV_WN16(p, d)
# define AV_RB32(x) bswap_32(AV_RN32(x))
# define AV_WB32(p, d) AV_WN32(p, bswap_32(d))
# define AV_RL32(x) AV_RN32(x)
# define AV_WL32(p, d) AV_WN32(p, d)
# define AV_RB64(x) bswap_64(AV_RN64(x))
# define AV_WB64(p, d) AV_WN64(p, bswap_64(d))
# define AV_RL64(x) AV_RN64(x)
# define AV_WL64(p, d) AV_WN64(p, d)
# endif
#else /* HAVE_FAST_UNALIGNED */
#define AV_RB16(x) ((((const uint8_t*)(x))[0] << 8) | ((const uint8_t*)(x))[1])
#define AV_WB16(p, d) do { \
((uint8_t*)(p))[1] = (d); \
((uint8_t*)(p))[0] = (d)>>8; } while(0)
#define AV_RL16(x) ((((const uint8_t*)(x))[1] << 8) | \
((const uint8_t*)(x))[0])
#define AV_WL16(p, d) do { \
((uint8_t*)(p))[0] = (d); \
((uint8_t*)(p))[1] = (d)>>8; } while(0)
#define AV_RB32(x) ((((const uint8_t*)(x))[0] << 24) | \
(((const uint8_t*)(x))[1] << 16) | \
(((const uint8_t*)(x))[2] << 8) | \
((const uint8_t*)(x))[3])
#define AV_WB32(p, d) do { \
((uint8_t*)(p))[3] = (d); \
((uint8_t*)(p))[2] = (d)>>8; \
((uint8_t*)(p))[1] = (d)>>16; \
((uint8_t*)(p))[0] = (d)>>24; } while(0)
#define AV_RL32(x) ((((const uint8_t*)(x))[3] << 24) | \
(((const uint8_t*)(x))[2] << 16) | \
(((const uint8_t*)(x))[1] << 8) | \
((const uint8_t*)(x))[0])
#define AV_WL32(p, d) do { \
((uint8_t*)(p))[0] = (d); \
((uint8_t*)(p))[1] = (d)>>8; \
((uint8_t*)(p))[2] = (d)>>16; \
((uint8_t*)(p))[3] = (d)>>24; } while(0)
#define AV_RB64(x) (((uint64_t)((const uint8_t*)(x))[0] << 56) | \
((uint64_t)((const uint8_t*)(x))[1] << 48) | \
((uint64_t)((const uint8_t*)(x))[2] << 40) | \
((uint64_t)((const uint8_t*)(x))[3] << 32) | \
((uint64_t)((const uint8_t*)(x))[4] << 24) | \
((uint64_t)((const uint8_t*)(x))[5] << 16) | \
((uint64_t)((const uint8_t*)(x))[6] << 8) | \
(uint64_t)((const uint8_t*)(x))[7])
#define AV_WB64(p, d) do { \
((uint8_t*)(p))[7] = (d); \
((uint8_t*)(p))[6] = (d)>>8; \
((uint8_t*)(p))[5] = (d)>>16; \
((uint8_t*)(p))[4] = (d)>>24; \
((uint8_t*)(p))[3] = (d)>>32; \
((uint8_t*)(p))[2] = (d)>>40; \
((uint8_t*)(p))[1] = (d)>>48; \
((uint8_t*)(p))[0] = (d)>>56; } while(0)
#define AV_RL64(x) (((uint64_t)((const uint8_t*)(x))[7] << 56) | \
((uint64_t)((const uint8_t*)(x))[6] << 48) | \
((uint64_t)((const uint8_t*)(x))[5] << 40) | \
((uint64_t)((const uint8_t*)(x))[4] << 32) | \
((uint64_t)((const uint8_t*)(x))[3] << 24) | \
((uint64_t)((const uint8_t*)(x))[2] << 16) | \
((uint64_t)((const uint8_t*)(x))[1] << 8) | \
(uint64_t)((const uint8_t*)(x))[0])
#define AV_WL64(p, d) do { \
((uint8_t*)(p))[0] = (d); \
((uint8_t*)(p))[1] = (d)>>8; \
((uint8_t*)(p))[2] = (d)>>16; \
((uint8_t*)(p))[3] = (d)>>24; \
((uint8_t*)(p))[4] = (d)>>32; \
((uint8_t*)(p))[5] = (d)>>40; \
((uint8_t*)(p))[6] = (d)>>48; \
((uint8_t*)(p))[7] = (d)>>56; } while(0)
#endif /* HAVE_FAST_UNALIGNED */
#define AV_RB24(x) ((((const uint8_t*)(x))[0] << 16) | \
(((const uint8_t*)(x))[1] << 8) | \
((const uint8_t*)(x))[2])
#define AV_WB24(p, d) do { \
((uint8_t*)(p))[2] = (d); \
((uint8_t*)(p))[1] = (d)>>8; \
((uint8_t*)(p))[0] = (d)>>16; } while(0)
#define AV_RL24(x) ((((const uint8_t*)(x))[2] << 16) | \
(((const uint8_t*)(x))[1] << 8) | \
((const uint8_t*)(x))[0])
#define AV_WL24(p, d) do { \
((uint8_t*)(p))[0] = (d); \
((uint8_t*)(p))[1] = (d)>>8; \
((uint8_t*)(p))[2] = (d)>>16; } while(0)
#endif /* FFMPEG_INTREADWRITE_H */

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/*
* Lagged Fibonacci PRNG
* Copyright (c) 2008 Michael Niedermayer
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <inttypes.h>
#include "lfg.h"
#include "md5.h"
#include "intreadwrite.h"
void av_cold av_lfg_init(AVLFG *c, unsigned int seed){
uint8_t tmp[16]={0};
int i;
for(i=8; i<64; i+=4){
AV_WL32(tmp, seed); tmp[4]=i;
av_md5_sum(tmp, tmp, 16);
c->state[i ]= AV_RL32(tmp);
c->state[i+1]= AV_RL32(tmp+4);
c->state[i+2]= AV_RL32(tmp+8);
c->state[i+3]= AV_RL32(tmp+12);
}
c->index=0;
}
#ifdef TEST
#include "log.h"
#include "common.h"
int main(void)
{
int x=0;
int i, j;
AVLFG state;
av_lfg_init(&state, 0xdeadbeef);
for (j = 0; j < 10000; j++) {
START_TIMER
for (i = 0; i < 624; i++) {
// av_log(NULL,AV_LOG_ERROR, "%X\n", av_lfg_get(&state));
x+=av_lfg_get(&state);
}
STOP_TIMER("624 calls of av_random");
}
av_log(NULL, AV_LOG_ERROR, "final value:%X\n", x);
return 0;
}
#endif

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/*
* Lagged Fibonacci PRNG
* Copyright (c) 2008 Michael Niedermayer
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_LFG_H
#define FFMPEG_LFG_H
typedef struct {
unsigned int state[64];
int index;
} AVLFG;
void av_lfg_init(AVLFG *c, unsigned int seed);
/**
* Gets the next random unsigned 32bit number using a ALFG.
*
* Please also consider a simple LCG like state= state*1664525+1013904223,
* it may be good enough and faster for your specific use case.
*/
static inline unsigned int av_lfg_get(AVLFG *c){
c->state[c->index & 63] = c->state[(c->index-24) & 63] + c->state[(c->index-55) & 63];
return c->state[c->index++ & 63];
}
/**
* Gets the next random unsigned 32bit number using a MLFG.
*
* Please also consider the av_lfg_get() above, it is faster.
*/
static inline unsigned int av_mlfg_get(AVLFG *c){
unsigned int a= c->state[(c->index-55) & 63];
unsigned int b= c->state[(c->index-24) & 63];
return c->state[c->index++ & 63] = 2*a*b+a+b;
}
#endif //FFMPEG_LFG_H

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/*
* linear least squares model
*
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file lls.c
* linear least squares model
*/
#include <math.h>
#include <string.h>
#include "lls.h"
void av_init_lls(LLSModel *m, int indep_count){
memset(m, 0, sizeof(LLSModel));
m->indep_count= indep_count;
}
void av_update_lls(LLSModel *m, double *var, double decay){
int i,j;
for(i=0; i<=m->indep_count; i++){
for(j=i; j<=m->indep_count; j++){
m->covariance[i][j] *= decay;
m->covariance[i][j] += var[i]*var[j];
}
}
}
void av_solve_lls(LLSModel *m, double threshold, int min_order){
int i,j,k;
double (*factor)[MAX_VARS+1]= (void*)&m->covariance[1][0];
double (*covar )[MAX_VARS+1]= (void*)&m->covariance[1][1];
double *covar_y = m->covariance[0];
int count= m->indep_count;
for(i=0; i<count; i++){
for(j=i; j<count; j++){
double sum= covar[i][j];
for(k=i-1; k>=0; k--)
sum -= factor[i][k]*factor[j][k];
if(i==j){
if(sum < threshold)
sum= 1.0;
factor[i][i]= sqrt(sum);
}else
factor[j][i]= sum / factor[i][i];
}
}
for(i=0; i<count; i++){
double sum= covar_y[i+1];
for(k=i-1; k>=0; k--)
sum -= factor[i][k]*m->coeff[0][k];
m->coeff[0][i]= sum / factor[i][i];
}
for(j=count-1; j>=min_order; j--){
for(i=j; i>=0; i--){
double sum= m->coeff[0][i];
for(k=i+1; k<=j; k++)
sum -= factor[k][i]*m->coeff[j][k];
m->coeff[j][i]= sum / factor[i][i];
}
m->variance[j]= covar_y[0];
for(i=0; i<=j; i++){
double sum= m->coeff[j][i]*covar[i][i] - 2*covar_y[i+1];
for(k=0; k<i; k++)
sum += 2*m->coeff[j][k]*covar[k][i];
m->variance[j] += m->coeff[j][i]*sum;
}
}
}
double av_evaluate_lls(LLSModel *m, double *param, int order){
int i;
double out= 0;
for(i=0; i<=order; i++)
out+= param[i]*m->coeff[order][i];
return out;
}
#ifdef TEST
#include <stdlib.h>
#include <stdio.h>
int main(void){
LLSModel m;
int i, order;
av_init_lls(&m, 3);
for(i=0; i<100; i++){
double var[4];
double eval;
#if 0
var[1] = rand() / (double)RAND_MAX;
var[2] = rand() / (double)RAND_MAX;
var[3] = rand() / (double)RAND_MAX;
var[2]= var[1] + var[3]/2;
var[0] = var[1] + var[2] + var[3] + var[1]*var[2]/100;
#else
var[0] = (rand() / (double)RAND_MAX - 0.5)*2;
var[1] = var[0] + rand() / (double)RAND_MAX - 0.5;
var[2] = var[1] + rand() / (double)RAND_MAX - 0.5;
var[3] = var[2] + rand() / (double)RAND_MAX - 0.5;
#endif
av_update_lls(&m, var, 0.99);
av_solve_lls(&m, 0.001, 0);
for(order=0; order<3; order++){
eval= av_evaluate_lls(&m, var+1, order);
printf("real:%f order:%d pred:%f var:%f coeffs:%f %f %f\n",
var[0], order, eval, sqrt(m.variance[order] / (i+1)),
m.coeff[order][0], m.coeff[order][1], m.coeff[order][2]);
}
}
return 0;
}
#endif

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/*
* linear least squares model
*
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_LLS_H
#define FFMPEG_LLS_H
#define MAX_VARS 32
//FIXME avoid direct access to LLSModel from outside
/**
* Linear least squares model.
*/
typedef struct LLSModel{
double covariance[MAX_VARS+1][MAX_VARS+1];
double coeff[MAX_VARS][MAX_VARS];
double variance[MAX_VARS];
int indep_count;
}LLSModel;
void av_init_lls(LLSModel *m, int indep_count);
void av_update_lls(LLSModel *m, double *param, double decay);
void av_solve_lls(LLSModel *m, double threshold, int min_order);
double av_evaluate_lls(LLSModel *m, double *param, int order);
#endif /* FFMPEG_LLS_H */

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/*
* log functions
* Copyright (c) 2003 Michel Bardiaux
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file log.c
* log.
*/
#include "avutil.h"
int av_log_level = AV_LOG_INFO;
void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
{
static int print_prefix=1;
AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
if(level>av_log_level)
return;
#undef fprintf
if(print_prefix && avc) {
fprintf(stderr, "[%s @ %p]", avc->item_name(ptr), ptr);
}
print_prefix= strstr(fmt, "\n") != NULL;
vfprintf(stderr, fmt, vl);
}
static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;
void av_log(void* avcl, int level, const char *fmt, ...)
{
va_list vl;
va_start(vl, fmt);
av_vlog(avcl, level, fmt, vl);
va_end(vl);
}
void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
{
av_log_callback(avcl, level, fmt, vl);
}
int av_log_get_level(void)
{
return av_log_level;
}
void av_log_set_level(int level)
{
av_log_level = level;
}
void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
{
av_log_callback = callback;
}

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_LOG_H
#define FFMPEG_LOG_H
#include <stdarg.h>
/**
* Describes the class of an AVClass context structure, that is an
* arbitrary struct of which the first field is a pointer to an
* AVClass struct (e.g. AVCodecContext, AVFormatContext etc.).
*/
typedef struct AVCLASS AVClass;
struct AVCLASS {
/**
* The name of the class; usually it is the same name as the
* context structure type to which the AVClass is associated.
*/
const char* class_name;
/**
* a pointer to a function which returns the name of a context
* instance \p ctx associated with the class
*/
const char* (*item_name)(void* ctx);
/**
* a pointer to the first option specified in the class if any or NULL
*
* @see av_set_default_options()
*/
const struct AVOption *option;
};
/* av_log API */
#if LIBAVUTIL_VERSION_INT < (50<<16)
#define AV_LOG_QUIET -1
#define AV_LOG_FATAL 0
#define AV_LOG_ERROR 0
#define AV_LOG_WARNING 1
#define AV_LOG_INFO 1
#define AV_LOG_VERBOSE 1
#define AV_LOG_DEBUG 2
#else
#define AV_LOG_QUIET -8
/**
* something went really wrong and we will crash now
*/
#define AV_LOG_PANIC 0
/**
* something went wrong and recovery is not possible
* like no header in a format which depends on it or a combination
* of parameters which are not allowed
*/
#define AV_LOG_FATAL 8
/**
* something went wrong and cannot losslessly be recovered
* but not all future data is affected
*/
#define AV_LOG_ERROR 16
/**
* something somehow does not look correct / something which may or may not
* lead to some problems like use of -vstrict -2
*/
#define AV_LOG_WARNING 24
#define AV_LOG_INFO 32
#define AV_LOG_VERBOSE 40
/**
* stuff which is only useful for libav* developers
*/
#define AV_LOG_DEBUG 48
#endif
#if LIBAVUTIL_VERSION_INT < (50<<16)
extern int av_log_level;
#endif
/**
* Send the specified message to the log if the level is less than or equal to
* the current av_log_level. By default, all logging messages are sent to
* stderr. This behavior can be altered by setting a different av_vlog callback
* function.
*
* @param avcl A pointer to an arbitrary struct of which the first field is a
* pointer to an AVClass struct.
* @param level The importance level of the message, lower values signifying
* higher importance.
* @param fmt The format string (printf-compatible) that specifies how
* subsequent arguments are converted to output.
* @see av_vlog
*/
#ifdef __GNUC__
void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
#else
void av_log(void*, int level, const char *fmt, ...);
#endif
void av_vlog(void*, int level, const char *fmt, va_list);
int av_log_get_level(void);
void av_log_set_level(int);
void av_log_set_callback(void (*)(void*, int, const char*, va_list));
void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl);
#endif /* FFMPEG_LOG_H */

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/*
* LZO 1x decompression
* Copyright (c) 2006 Reimar Doeffinger
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "common.h"
//! avoid e.g. MPlayers fast_memcpy, it slows things down here
#undef memcpy
#include <string.h>
#include "lzo.h"
//! define if we may write up to 12 bytes beyond the output buffer
#define OUTBUF_PADDED 1
//! define if we may read up to 8 bytes beyond the input buffer
#define INBUF_PADDED 1
typedef struct LZOContext {
const uint8_t *in, *in_end;
uint8_t *out_start, *out, *out_end;
int error;
} LZOContext;
/**
* \brief read one byte from input buffer, avoiding overrun
* \return byte read
*/
static inline int get_byte(LZOContext *c) {
if (c->in < c->in_end)
return *c->in++;
c->error |= LZO_INPUT_DEPLETED;
return 1;
}
#ifdef INBUF_PADDED
#define GETB(c) (*(c).in++)
#else
#define GETB(c) get_byte(&(c))
#endif
/**
* \brief decode a length value in the coding used by lzo
* \param x previous byte value
* \param mask bits used from x
* \return decoded length value
*/
static inline int get_len(LZOContext *c, int x, int mask) {
int cnt = x & mask;
if (!cnt) {
while (!(x = get_byte(c))) cnt += 255;
cnt += mask + x;
}
return cnt;
}
//#define UNALIGNED_LOADSTORE
#define BUILTIN_MEMCPY
#ifdef UNALIGNED_LOADSTORE
#define COPY2(d, s) *(uint16_t *)(d) = *(uint16_t *)(s);
#define COPY4(d, s) *(uint32_t *)(d) = *(uint32_t *)(s);
#elif defined(BUILTIN_MEMCPY)
#define COPY2(d, s) memcpy(d, s, 2);
#define COPY4(d, s) memcpy(d, s, 4);
#else
#define COPY2(d, s) (d)[0] = (s)[0]; (d)[1] = (s)[1];
#define COPY4(d, s) (d)[0] = (s)[0]; (d)[1] = (s)[1]; (d)[2] = (s)[2]; (d)[3] = (s)[3];
#endif
/**
* \brief copy bytes from input to output buffer with checking
* \param cnt number of bytes to copy, must be >= 0
*/
static inline void copy(LZOContext *c, int cnt) {
register const uint8_t *src = c->in;
register uint8_t *dst = c->out;
if (cnt > c->in_end - src) {
cnt = FFMAX(c->in_end - src, 0);
c->error |= LZO_INPUT_DEPLETED;
}
if (cnt > c->out_end - dst) {
cnt = FFMAX(c->out_end - dst, 0);
c->error |= LZO_OUTPUT_FULL;
}
#if defined(INBUF_PADDED) && defined(OUTBUF_PADDED)
COPY4(dst, src);
src += 4;
dst += 4;
cnt -= 4;
if (cnt > 0)
#endif
memcpy(dst, src, cnt);
c->in = src + cnt;
c->out = dst + cnt;
}
static inline void memcpy_backptr(uint8_t *dst, int back, int cnt);
/**
* \brief copy previously decoded bytes to current position
* \param back how many bytes back we start
* \param cnt number of bytes to copy, must be >= 0
*
* cnt > back is valid, this will copy the bytes we just copied,
* thus creating a repeating pattern with a period length of back.
*/
static inline void copy_backptr(LZOContext *c, int back, int cnt) {
register const uint8_t *src = &c->out[-back];
register uint8_t *dst = c->out;
if (src < c->out_start || src > dst) {
c->error |= LZO_INVALID_BACKPTR;
return;
}
if (cnt > c->out_end - dst) {
cnt = FFMAX(c->out_end - dst, 0);
c->error |= LZO_OUTPUT_FULL;
}
memcpy_backptr(dst, back, cnt);
c->out = dst + cnt;
}
static inline void memcpy_backptr(uint8_t *dst, int back, int cnt) {
const uint8_t *src = &dst[-back];
if (back == 1) {
memset(dst, *src, cnt);
} else {
#ifdef OUTBUF_PADDED
COPY2(dst, src);
COPY2(dst + 2, src + 2);
src += 4;
dst += 4;
cnt -= 4;
if (cnt > 0) {
COPY2(dst, src);
COPY2(dst + 2, src + 2);
COPY2(dst + 4, src + 4);
COPY2(dst + 6, src + 6);
src += 8;
dst += 8;
cnt -= 8;
}
#endif
if (cnt > 0) {
int blocklen = back;
while (cnt > blocklen) {
memcpy(dst, src, blocklen);
dst += blocklen;
cnt -= blocklen;
blocklen <<= 1;
}
memcpy(dst, src, cnt);
}
}
}
/**
* \brief deliberately overlapping memcpy implementation
* \param dst destination buffer; must be padded with 12 additional bytes
* \param back how many bytes back we start (the initial size of the overlapping window)
* \param cnt number of bytes to copy, must be >= 0
*
* cnt > back is valid, this will copy the bytes we just copied,
* thus creating a repeating pattern with a period length of back.
*/
void av_memcpy_backptr(uint8_t *dst, int back, int cnt) {
memcpy_backptr(dst, back, cnt);
}
/**
* \brief decode LZO 1x compressed data
* \param out output buffer
* \param outlen size of output buffer, number of bytes left are returned here
* \param in input buffer
* \param inlen size of input buffer, number of bytes left are returned here
* \return 0 on success, otherwise error flags, see lzo.h
*
* make sure all buffers are appropriately padded, in must provide
* LZO_INPUT_PADDING, out must provide LZO_OUTPUT_PADDING additional bytes
*/
int lzo1x_decode(void *out, int *outlen, const void *in, int *inlen) {
int state= 0;
int x;
LZOContext c;
c.in = in;
c.in_end = (const uint8_t *)in + *inlen;
c.out = c.out_start = out;
c.out_end = (uint8_t *)out + * outlen;
c.error = 0;
x = GETB(c);
if (x > 17) {
copy(&c, x - 17);
x = GETB(c);
if (x < 16) c.error |= LZO_ERROR;
}
if (c.in > c.in_end)
c.error |= LZO_INPUT_DEPLETED;
while (!c.error) {
int cnt, back;
if (x > 15) {
if (x > 63) {
cnt = (x >> 5) - 1;
back = (GETB(c) << 3) + ((x >> 2) & 7) + 1;
} else if (x > 31) {
cnt = get_len(&c, x, 31);
x = GETB(c);
back = (GETB(c) << 6) + (x >> 2) + 1;
} else {
cnt = get_len(&c, x, 7);
back = (1 << 14) + ((x & 8) << 11);
x = GETB(c);
back += (GETB(c) << 6) + (x >> 2);
if (back == (1 << 14)) {
if (cnt != 1)
c.error |= LZO_ERROR;
break;
}
}
} else if(!state){
cnt = get_len(&c, x, 15);
copy(&c, cnt + 3);
x = GETB(c);
if (x > 15)
continue;
cnt = 1;
back = (1 << 11) + (GETB(c) << 2) + (x >> 2) + 1;
} else {
cnt = 0;
back = (GETB(c) << 2) + (x >> 2) + 1;
}
copy_backptr(&c, back, cnt + 2);
state=
cnt = x & 3;
copy(&c, cnt);
x = GETB(c);
}
*inlen = c.in_end - c.in;
if (c.in > c.in_end)
*inlen = 0;
*outlen = c.out_end - c.out;
return c.error;
}
#ifdef TEST
#include <stdio.h>
#include <lzo/lzo1x.h>
#include "log.h"
#define MAXSZ (10*1024*1024)
int main(int argc, char *argv[]) {
FILE *in = fopen(argv[1], "rb");
uint8_t *orig = av_malloc(MAXSZ + 16);
uint8_t *comp = av_malloc(2*MAXSZ + 16);
uint8_t *decomp = av_malloc(MAXSZ + 16);
size_t s = fread(orig, 1, MAXSZ, in);
lzo_uint clen = 0;
long tmp[LZO1X_MEM_COMPRESS];
int inlen, outlen;
int i;
av_log_level = AV_LOG_DEBUG;
lzo1x_999_compress(orig, s, comp, &clen, tmp);
for (i = 0; i < 300; i++) {
START_TIMER
inlen = clen; outlen = MAXSZ;
#ifdef LIBLZO
if (lzo1x_decompress_safe(comp, inlen, decomp, &outlen, NULL))
#elif defined(LIBLZO_UNSAFE)
if (lzo1x_decompress(comp, inlen, decomp, &outlen, NULL))
#else
if (lzo1x_decode(decomp, &outlen, comp, &inlen))
#endif
av_log(NULL, AV_LOG_ERROR, "decompression error\n");
STOP_TIMER("lzod")
}
if (memcmp(orig, decomp, s))
av_log(NULL, AV_LOG_ERROR, "decompression incorrect\n");
else
av_log(NULL, AV_LOG_ERROR, "decompression ok\n");
return 0;
}
#endif

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/*
* LZO 1x decompression
* copyright (c) 2006 Reimar Doeffinger
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_LZO_H
#define FFMPEG_LZO_H
#include <stdint.h>
#define LZO_INPUT_DEPLETED 1
#define LZO_OUTPUT_FULL 2
#define LZO_INVALID_BACKPTR 4
#define LZO_ERROR 8
#define LZO_INPUT_PADDING 8
#define LZO_OUTPUT_PADDING 12
int lzo1x_decode(void *out, int *outlen, const void *in, int *inlen);
void av_memcpy_backptr(uint8_t *dst, int back, int cnt);
#endif /* FFMPEG_LZO_H */

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/*
* Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file mathematics.c
* Miscellaneous math routines and tables.
*/
#include "common.h"
#include "mathematics.h"
const uint8_t ff_sqrt_tab[256]={
0, 16, 23, 28, 32, 36, 40, 43, 46, 48, 51, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 77, 79, 80, 82, 84, 85, 87, 88, 90,
91, 92, 94, 95, 96, 98, 99,100,102,103,104,105,107,108,109,110,111,112,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,144,145,146,147,148,149,150,151,151,152,153,154,155,156,156,
157,158,159,160,160,161,162,163,164,164,165,166,167,168,168,169,170,171,171,172,173,174,174,175,176,176,177,178,179,179,180,181,
182,182,183,184,184,185,186,186,187,188,188,189,190,190,191,192,192,193,194,194,195,196,196,197,198,198,199,200,200,201,202,202,
203,204,204,205,205,206,207,207,208,208,209,210,210,211,212,212,213,213,214,215,215,216,216,217,218,218,219,219,220,220,221,222,
222,223,223,224,224,225,226,226,227,227,228,228,229,230,230,231,231,232,232,233,233,234,235,235,236,236,237,237,238,238,239,239,
240,240,241,242,242,243,243,244,244,245,245,246,246,247,247,248,248,249,249,250,250,251,251,252,252,253,253,254,254,255,255,255
};
const uint8_t ff_log2_tab[256]={
0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
};
int64_t ff_gcd(int64_t a, int64_t b){
if(b) return ff_gcd(b, a%b);
else return a;
}
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd){
int64_t r=0;
assert(c > 0);
assert(b >=0);
assert(rnd >=0 && rnd<=5 && rnd!=4);
if(a<0 && a != INT64_MIN) return -av_rescale_rnd(-a, b, c, rnd ^ ((rnd>>1)&1));
if(rnd==AV_ROUND_NEAR_INF) r= c/2;
else if(rnd&1) r= c-1;
if(b<=INT_MAX && c<=INT_MAX){
if(a<=INT_MAX)
return (a * b + r)/c;
else
return a/c*b + (a%c*b + r)/c;
}else{
#if 1
uint64_t a0= a&0xFFFFFFFF;
uint64_t a1= a>>32;
uint64_t b0= b&0xFFFFFFFF;
uint64_t b1= b>>32;
uint64_t t1= a0*b1 + a1*b0;
uint64_t t1a= t1<<32;
int i;
a0 = a0*b0 + t1a;
a1 = a1*b1 + (t1>>32) + (a0<t1a);
a0 += r;
a1 += a0<r;
for(i=63; i>=0; i--){
// int o= a1 & 0x8000000000000000ULL;
a1+= a1 + ((a0>>i)&1);
t1+=t1;
if(/*o || */c <= a1){
a1 -= c;
t1++;
}
}
return t1;
}
#else
AVInteger ai;
ai= av_mul_i(av_int2i(a), av_int2i(b));
ai= av_add_i(ai, av_int2i(r));
return av_i2int(av_div_i(ai, av_int2i(c)));
}
#endif
}
int64_t av_rescale(int64_t a, int64_t b, int64_t c){
return av_rescale_rnd(a, b, c, AV_ROUND_NEAR_INF);
}
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq){
int64_t b= bq.num * (int64_t)cq.den;
int64_t c= cq.num * (int64_t)bq.den;
return av_rescale_rnd(a, b, c, AV_ROUND_NEAR_INF);
}
#ifdef TEST
#include "integer.h"
#undef printf
int main(void){
int64_t a,b,c,d,e;
for(a=7; a<(1LL<<62); a+=a/3+1){
for(b=3; b<(1LL<<62); b+=b/4+1){
for(c=9; c<(1LL<<62); c+=(c*2)/5+3){
int64_t r= c/2;
AVInteger ai;
ai= av_mul_i(av_int2i(a), av_int2i(b));
ai= av_add_i(ai, av_int2i(r));
d= av_i2int(av_div_i(ai, av_int2i(c)));
e= av_rescale(a,b,c);
if((double)a * (double)b / (double)c > (1LL<<63))
continue;
if(d!=e) printf("%"PRId64"*%"PRId64"/%"PRId64"= %"PRId64"=%"PRId64"\n", a, b, c, d, e);
}
}
}
return 0;
}
#endif

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/*
* copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_MATHEMATICS_H
#define FFMPEG_MATHEMATICS_H
#include <stdint.h>
#include <math.h>
#include "rational.h"
#ifndef M_E
#define M_E 2.7182818284590452354 /* e */
#endif
#ifndef M_LN2
#define M_LN2 0.69314718055994530942 /* log_e 2 */
#endif
#ifndef M_LN10
#define M_LN10 2.30258509299404568402 /* log_e 10 */
#endif
#ifndef M_PI
#define M_PI 3.14159265358979323846 /* pi */
#endif
#ifndef M_SQRT1_2
#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
#endif
enum AVRounding {
AV_ROUND_ZERO = 0, ///< round toward zero
AV_ROUND_INF = 1, ///< round away from zero
AV_ROUND_DOWN = 2, ///< round toward -infinity
AV_ROUND_UP = 3, ///< round toward +infinity
AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from zero
};
/**
* rescale a 64bit integer with rounding to nearest.
* a simple a*b/c isn't possible as it can overflow
*/
int64_t av_rescale(int64_t a, int64_t b, int64_t c) av_const;
/**
* rescale a 64bit integer with specified rounding.
* a simple a*b/c isn't possible as it can overflow
*/
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding) av_const;
/**
* rescale a 64bit integer by 2 rational numbers.
*/
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq) av_const;
#endif /* FFMPEG_MATHEMATICS_H */

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/*
* Copyright (C) 2006 Michael Niedermayer (michaelni@gmx.at)
* Copyright (C) 2003-2005 by Christopher R. Hertel (crh@ubiqx.mn.org)
*
* References:
* IETF RFC 1321: The MD5 Message-Digest Algorithm
* Ron Rivest. IETF, April, 1992
*
* based on http://ubiqx.org/libcifs/source/Auth/MD5.c
* from Christopher R. Hertel (crh@ubiqx.mn.org)
* Simplified, cleaned and IMO redundant comments removed by michael.
*
* If you use gcc, then version 4.1 or later and -fomit-frame-pointer is
* strongly recommended.
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "common.h"
#include <string.h>
#include "md5.h"
typedef struct AVMD5{
uint64_t len;
uint8_t block[64];
uint32_t ABCD[4];
} AVMD5;
const int av_md5_size= sizeof(AVMD5);
static const uint8_t S[4][4] = {
{ 7, 12, 17, 22 }, /* Round 1 */
{ 5, 9, 14, 20 }, /* Round 2 */
{ 4, 11, 16, 23 }, /* Round 3 */
{ 6, 10, 15, 21 } /* Round 4 */
};
static const uint32_t T[64] = { // T[i]= fabs(sin(i+1)<<32)
0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee, /* Round 1 */
0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa, /* Round 2 */
0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c, /* Round 3 */
0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039, /* Round 4 */
0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391,
};
#define CORE(i, a, b, c, d) \
t = S[i>>4][i&3];\
a += T[i];\
\
if(i<32){\
if(i<16) a += (d ^ (b&(c^d))) + X[ i &15 ];\
else a += (c ^ (d&(c^b))) + X[ (1+5*i)&15 ];\
}else{\
if(i<48) a += (b^c^d) + X[ (5+3*i)&15 ];\
else a += (c^(b|~d)) + X[ ( 7*i)&15 ];\
}\
a = b + (( a << t ) | ( a >> (32 - t) ));
static void body(uint32_t ABCD[4], uint32_t X[16]){
int t;
int i av_unused;
unsigned int a= ABCD[3];
unsigned int b= ABCD[2];
unsigned int c= ABCD[1];
unsigned int d= ABCD[0];
#ifdef WORDS_BIGENDIAN
for(i=0; i<16; i++)
X[i]= bswap_32(X[i]);
#endif
#ifdef CONFIG_SMALL
for( i = 0; i < 64; i++ ){
CORE(i,a,b,c,d)
t=d; d=c; c=b; b=a; a=t;
}
#else
#define CORE2(i) CORE(i,a,b,c,d) CORE((i+1),d,a,b,c) CORE((i+2),c,d,a,b) CORE((i+3),b,c,d,a)
#define CORE4(i) CORE2(i) CORE2((i+4)) CORE2((i+8)) CORE2((i+12))
CORE4(0) CORE4(16) CORE4(32) CORE4(48)
#endif
ABCD[0] += d;
ABCD[1] += c;
ABCD[2] += b;
ABCD[3] += a;
}
void av_md5_init(AVMD5 *ctx){
ctx->len = 0;
ctx->ABCD[0] = 0x10325476;
ctx->ABCD[1] = 0x98badcfe;
ctx->ABCD[2] = 0xefcdab89;
ctx->ABCD[3] = 0x67452301;
}
void av_md5_update(AVMD5 *ctx, const uint8_t *src, const int len){
int i, j;
j= ctx->len & 63;
ctx->len += len;
for( i = 0; i < len; i++ ){
ctx->block[j++] = src[i];
if( 64 == j ){
body(ctx->ABCD, (uint32_t*) ctx->block);
j = 0;
}
}
}
void av_md5_final(AVMD5 *ctx, uint8_t *dst){
int i;
uint64_t finalcount= le2me_64(ctx->len<<3);
av_md5_update(ctx, "\200", 1);
while((ctx->len & 63)<56)
av_md5_update(ctx, "", 1);
av_md5_update(ctx, (uint8_t*)&finalcount, 8);
for(i=0; i<4; i++)
((uint32_t*)dst)[i]= le2me_32(ctx->ABCD[3-i]);
}
void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len){
AVMD5 ctx[1];
av_md5_init(ctx);
av_md5_update(ctx, src, len);
av_md5_final(ctx, dst);
}
#ifdef TEST
#include <stdio.h>
#undef printf
int main(void){
uint64_t md5val;
int i;
uint8_t in[1000];
for(i=0; i<1000; i++) in[i]= i*i;
av_md5_sum( (uint8_t*)&md5val, in, 1000); printf("%"PRId64"\n", md5val);
av_md5_sum( (uint8_t*)&md5val, in, 63); printf("%"PRId64"\n", md5val);
av_md5_sum( (uint8_t*)&md5val, in, 64); printf("%"PRId64"\n", md5val);
av_md5_sum( (uint8_t*)&md5val, in, 65); printf("%"PRId64"\n", md5val);
for(i=0; i<1000; i++) in[i]= i % 127;
av_md5_sum( (uint8_t*)&md5val, in, 999); printf("%"PRId64"\n", md5val);
return 0;
}
#endif

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_MD5_H
#define FFMPEG_MD5_H
#include <stdint.h>
extern const int av_md5_size;
struct AVMD5;
void av_md5_init(struct AVMD5 *ctx);
void av_md5_update(struct AVMD5 *ctx, const uint8_t *src, const int len);
void av_md5_final(struct AVMD5 *ctx, uint8_t *dst);
void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len);
#endif /* FFMPEG_MD5_H */

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/*
* default memory allocator for libavutil
* Copyright (c) 2002 Fabrice Bellard.
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file mem.c
* default memory allocator for libavutil.
*/
#include "common.h"
/* here we can use OS dependent allocation functions */
#undef malloc
#undef free
#undef realloc
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
/* you can redefine av_malloc and av_free in your project to use your
memory allocator. You do not need to suppress this file because the
linker will do it automatically */
void *av_malloc(unsigned int size)
{
void *ptr;
#ifdef CONFIG_MEMALIGN_HACK
long diff;
#endif
/* let's disallow possible ambiguous cases */
if(size > (INT_MAX-16) )
return NULL;
#ifdef CONFIG_MEMALIGN_HACK
ptr = malloc(size+16);
if(!ptr)
return ptr;
diff= ((-(long)ptr - 1)&15) + 1;
ptr = (char*)ptr + diff;
((char*)ptr)[-1]= diff;
#elif defined (HAVE_MEMALIGN)
ptr = memalign(16,size);
/* Why 64?
Indeed, we should align it:
on 4 for 386
on 16 for 486
on 32 for 586, PPro - k6-III
on 64 for K7 (maybe for P3 too).
Because L1 and L2 caches are aligned on those values.
But I don't want to code such logic here!
*/
/* Why 16?
Because some CPUs need alignment, for example SSE2 on P4, & most RISC CPUs
it will just trigger an exception and the unaligned load will be done in the
exception handler or it will just segfault (SSE2 on P4)
Why not larger? Because I did not see a difference in benchmarks ...
*/
/* benchmarks with p3
memalign(64)+1 3071,3051,3032
memalign(64)+2 3051,3032,3041
memalign(64)+4 2911,2896,2915
memalign(64)+8 2545,2554,2550
memalign(64)+16 2543,2572,2563
memalign(64)+32 2546,2545,2571
memalign(64)+64 2570,2533,2558
btw, malloc seems to do 8 byte alignment by default here
*/
#else
ptr = malloc(size);
#endif
return ptr;
}
void *av_realloc(void *ptr, unsigned int size)
{
#ifdef CONFIG_MEMALIGN_HACK
int diff;
#endif
/* let's disallow possible ambiguous cases */
if(size > (INT_MAX-16) )
return NULL;
#ifdef CONFIG_MEMALIGN_HACK
//FIXME this isn't aligned correctly, though it probably isn't needed
if(!ptr) return av_malloc(size);
diff= ((char*)ptr)[-1];
return (char*)realloc((char*)ptr - diff, size + diff) + diff;
#else
return realloc(ptr, size);
#endif
}
void av_free(void *ptr)
{
/* XXX: this test should not be needed on most libcs */
if (ptr)
#ifdef CONFIG_MEMALIGN_HACK
free((char*)ptr - ((char*)ptr)[-1]);
#else
free(ptr);
#endif
}
void av_freep(void *arg)
{
void **ptr= (void**)arg;
av_free(*ptr);
*ptr = NULL;
}
void *av_mallocz(unsigned int size)
{
void *ptr = av_malloc(size);
if (ptr)
memset(ptr, 0, size);
return ptr;
}
char *av_strdup(const char *s)
{
char *ptr= NULL;
if(s){
int len = strlen(s) + 1;
ptr = av_malloc(len);
if (ptr)
memcpy(ptr, s, len);
}
return ptr;
}

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file mem.h
* Memory handling functions.
*/
#ifndef FFMPEG_MEM_H
#define FFMPEG_MEM_H
#ifdef __ICC
#define DECLARE_ALIGNED(n,t,v) t v __attribute__ ((aligned (n)))
#define DECLARE_ASM_CONST(n,t,v) const t __attribute__ ((aligned (n))) v
#elif defined(__GNUC__)
#define DECLARE_ALIGNED(n,t,v) t v __attribute__ ((aligned (n)))
#define DECLARE_ASM_CONST(n,t,v) static const t v attribute_used __attribute__ ((aligned (n)))
#elif defined(_MSC_VER)
#define DECLARE_ALIGNED(n,t,v) __declspec(align(n)) t v
#define DECLARE_ASM_CONST(n,t,v) __declspec(align(n)) static const t v
#elif defined(HAVE_INLINE_ASM)
#error The asm code needs alignment, but we do not know how to do it for this compiler.
#else
#define DECLARE_ALIGNED(n,t,v) t v
#define DECLARE_ASM_CONST(n,t,v) static const t v
#endif
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
#define av_malloc_attrib __attribute__((__malloc__))
#else
#define av_malloc_attrib
#endif
#if defined(__GNUC__) && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ > 2)
#define av_alloc_size(n) __attribute__((alloc_size(n)))
#else
#define av_alloc_size(n)
#endif
/**
* Allocate a block of \p size bytes with alignment suitable for all
* memory accesses (including vectors if available on the CPU).
* @param size Size in bytes for the memory block to be allocated.
* @return Pointer to the allocated block, NULL if it cannot allocate
* it.
* @see av_mallocz()
*/
void *av_malloc(unsigned int size) av_malloc_attrib av_alloc_size(1);
/**
* Allocate or reallocate a block of memory.
* If \p ptr is NULL and \p size > 0, allocate a new block. If \p
* size is zero, free the memory block pointed by \p ptr.
* @param size Size in bytes for the memory block to be allocated or
* reallocated.
* @param ptr Pointer to a memory block already allocated with
* av_malloc(z)() or av_realloc() or NULL.
* @return Pointer to a newly reallocated block or NULL if it cannot
* reallocate or the function is used to free the memory block.
* @see av_fast_realloc()
*/
void *av_realloc(void *ptr, unsigned int size) av_alloc_size(2);
/**
* Free a memory block which has been allocated with av_malloc(z)() or
* av_realloc().
* @param ptr Pointer to the memory block which should be freed.
* @note ptr = NULL is explicitly allowed.
* @note It is recommended that you use av_freep() instead.
* @see av_freep()
*/
void av_free(void *ptr);
/**
* Allocate a block of \p size bytes with alignment suitable for all
* memory accesses (including vectors if available on the CPU) and
* set to zeroes all the bytes of the block.
* @param size Size in bytes for the memory block to be allocated.
* @return Pointer to the allocated block, NULL if it cannot allocate
* it.
* @see av_malloc()
*/
void *av_mallocz(unsigned int size) av_malloc_attrib av_alloc_size(1);
/**
* Duplicate the string \p s.
* @param s String to be duplicated.
* @return Pointer to a newly allocated string containing a
* copy of \p s or NULL if it cannot be allocated.
*/
char *av_strdup(const char *s) av_malloc_attrib;
/**
* Free a memory block which has been allocated with av_malloc(z)() or
* av_realloc() and set to NULL the pointer to it.
* @param ptr Pointer to the pointer to the memory block which should
* be freed.
* @see av_free()
*/
void av_freep(void *ptr);
#endif /* FFMPEG_MEM_H */

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/*
* Principal component analysis
* Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file pca.c
* Principal component analysis
*/
#include "common.h"
#include "pca.h"
typedef struct PCA{
int count;
int n;
double *covariance;
double *mean;
}PCA;
PCA *ff_pca_init(int n){
PCA *pca;
if(n<=0)
return NULL;
pca= av_mallocz(sizeof(PCA));
pca->n= n;
pca->count=0;
pca->covariance= av_mallocz(sizeof(double)*n*n);
pca->mean= av_mallocz(sizeof(double)*n);
return pca;
}
void ff_pca_free(PCA *pca){
av_freep(&pca->covariance);
av_freep(&pca->mean);
av_free(pca);
}
void ff_pca_add(PCA *pca, double *v){
int i, j;
const int n= pca->n;
for(i=0; i<n; i++){
pca->mean[i] += v[i];
for(j=i; j<n; j++)
pca->covariance[j + i*n] += v[i]*v[j];
}
pca->count++;
}
int ff_pca(PCA *pca, double *eigenvector, double *eigenvalue){
int i, j, k, pass;
const int n= pca->n;
double z[n];
memset(eigenvector, 0, sizeof(double)*n*n);
for(j=0; j<n; j++){
pca->mean[j] /= pca->count;
eigenvector[j + j*n] = 1.0;
for(i=0; i<=j; i++){
pca->covariance[j + i*n] /= pca->count;
pca->covariance[j + i*n] -= pca->mean[i] * pca->mean[j];
pca->covariance[i + j*n] = pca->covariance[j + i*n];
}
eigenvalue[j]= pca->covariance[j + j*n];
z[j]= 0;
}
for(pass=0; pass < 50; pass++){
double sum=0;
for(i=0; i<n; i++)
for(j=i+1; j<n; j++)
sum += fabs(pca->covariance[j + i*n]);
if(sum == 0){
for(i=0; i<n; i++){
double maxvalue= -1;
for(j=i; j<n; j++){
if(eigenvalue[j] > maxvalue){
maxvalue= eigenvalue[j];
k= j;
}
}
eigenvalue[k]= eigenvalue[i];
eigenvalue[i]= maxvalue;
for(j=0; j<n; j++){
double tmp= eigenvector[k + j*n];
eigenvector[k + j*n]= eigenvector[i + j*n];
eigenvector[i + j*n]= tmp;
}
}
return pass;
}
for(i=0; i<n; i++){
for(j=i+1; j<n; j++){
double covar= pca->covariance[j + i*n];
double t,c,s,tau,theta, h;
if(pass < 3 && fabs(covar) < sum / (5*n*n)) //FIXME why pass < 3
continue;
if(fabs(covar) == 0.0) //FIXME shouldnt be needed
continue;
if(pass >=3 && fabs((eigenvalue[j]+z[j])/covar) > (1LL<<32) && fabs((eigenvalue[i]+z[i])/covar) > (1LL<<32)){
pca->covariance[j + i*n]=0.0;
continue;
}
h= (eigenvalue[j]+z[j]) - (eigenvalue[i]+z[i]);
theta=0.5*h/covar;
t=1.0/(fabs(theta)+sqrt(1.0+theta*theta));
if(theta < 0.0) t = -t;
c=1.0/sqrt(1+t*t);
s=t*c;
tau=s/(1.0+c);
z[i] -= t*covar;
z[j] += t*covar;
#define ROTATE(a,i,j,k,l) {\
double g=a[j + i*n];\
double h=a[l + k*n];\
a[j + i*n]=g-s*(h+g*tau);\
a[l + k*n]=h+s*(g-h*tau); }
for(k=0; k<n; k++) {
if(k!=i && k!=j){
ROTATE(pca->covariance,FFMIN(k,i),FFMAX(k,i),FFMIN(k,j),FFMAX(k,j))
}
ROTATE(eigenvector,k,i,k,j)
}
pca->covariance[j + i*n]=0.0;
}
}
for (i=0; i<n; i++) {
eigenvalue[i] += z[i];
z[i]=0.0;
}
}
return -1;
}
#ifdef TEST
#undef printf
#undef random
#include <stdio.h>
#include <stdlib.h>
int main(){
PCA *pca;
int i, j, k;
#define LEN 8
double eigenvector[LEN*LEN];
double eigenvalue[LEN];
pca= ff_pca_init(LEN);
for(i=0; i<9000000; i++){
double v[2*LEN+100];
double sum=0;
int pos= random()%LEN;
int v2= (random()%101) - 50;
v[0]= (random()%101) - 50;
for(j=1; j<8; j++){
if(j<=pos) v[j]= v[0];
else v[j]= v2;
sum += v[j];
}
/* for(j=0; j<LEN; j++){
v[j] -= v[pos];
}*/
// sum += random()%10;
/* for(j=0; j<LEN; j++){
v[j] -= sum/LEN;
}*/
// lbt1(v+100,v+100,LEN);
ff_pca_add(pca, v);
}
ff_pca(pca, eigenvector, eigenvalue);
for(i=0; i<LEN; i++){
pca->count= 1;
pca->mean[i]= 0;
// (0.5^|x|)^2 = 0.5^2|x| = 0.25^|x|
// pca.covariance[i + i*LEN]= pow(0.5, fabs
for(j=i; j<LEN; j++){
printf("%f ", pca->covariance[i + j*LEN]);
}
printf("\n");
}
#if 1
for(i=0; i<LEN; i++){
double v[LEN];
double error=0;
memset(v, 0, sizeof(v));
for(j=0; j<LEN; j++){
for(k=0; k<LEN; k++){
v[j] += pca->covariance[FFMIN(k,j) + FFMAX(k,j)*LEN] * eigenvector[i + k*LEN];
}
v[j] /= eigenvalue[i];
error += fabs(v[j] - eigenvector[i + j*LEN]);
}
printf("%f ", error);
}
printf("\n");
#endif
for(i=0; i<LEN; i++){
for(j=0; j<LEN; j++){
printf("%9.6f ", eigenvector[i + j*LEN]);
}
printf(" %9.1f %f\n", eigenvalue[i], eigenvalue[i]/eigenvalue[0]);
}
return 0;
}
#endif

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/*
* Principal component analysis
* Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file pca.h
* Principal component analysis
*/
#ifndef FFMPEG_PCA_H
#define FFMPEG_PCA_H
struct PCA *ff_pca_init(int n);
void ff_pca_free(struct PCA *pca);
void ff_pca_add(struct PCA *pca, double *v);
int ff_pca(struct PCA *pca, double *eigenvector, double *eigenvalue);
#endif /* FFMPEG_PCA_H */

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/*
* Mersenne Twister Random Algorithm
* Copyright (c) 2006 Ryan Martell.
* Based on A C-program for MT19937, with initialization improved 2002/1/26. Coded by
* Takuji Nishimura and Makoto Matsumoto.
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
see http://en.wikipedia.org/wiki/Mersenne_twister for an explanation of this algorithm.
*/
#include <stdio.h>
#include "random.h"
/* Period parameters */
#define M 397
#define A 0x9908b0df /* constant vector a */
#define UPPER_MASK 0x80000000 /* most significant w-r bits */
#define LOWER_MASK 0x7fffffff /* least significant r bits */
/** initializes mt[AV_RANDOM_N] with a seed */
void av_init_random(unsigned int seed, AVRandomState *state)
{
int index;
/*
This differs from the wikipedia article. Source is from the
Makoto Matsumoto and Takuji Nishimura code, with the following comment:
*/
/* See Knuth TAOCP Vol2. 3rd Ed. P.106 for multiplier. */
/* In the previous versions, MSBs of the seed affect */
/* only MSBs of the array mt[]. */
state->mt[0] = seed & 0xffffffff;
for (index = 1; index < AV_RANDOM_N; index++) {
unsigned int prev= state->mt[index - 1];
state->mt[index] = (1812433253UL * (prev ^ (prev>>30)) + index) & 0xffffffff;
}
state->index= index; // will cause it to generate untempered numbers the first iteration
}
/** generate AV_RANDOM_N words at one time (which will then be tempered later) (av_random calls this; you shouldn't) */
void av_random_generate_untempered_numbers(AVRandomState *state)
{
int kk;
unsigned int y;
for (kk = 0; kk < AV_RANDOM_N - M; kk++) {
y = (state->mt[kk] & UPPER_MASK) | (state->mt[kk + 1] & LOWER_MASK);
state->mt[kk] = state->mt[kk + M] ^ (y >> 1) ^ ((y&1)*A);
}
for (; kk < AV_RANDOM_N - 1; kk++) {
y = (state->mt[kk] & UPPER_MASK) | (state->mt[kk + 1] & LOWER_MASK);
state->mt[kk] = state->mt[kk + (M - AV_RANDOM_N)] ^ (y >> 1) ^ ((y&1)*A);
}
y = (state->mt[AV_RANDOM_N - 1] & UPPER_MASK) | (state->mt[0] & LOWER_MASK);
state->mt[AV_RANDOM_N - 1] = state->mt[M - 1] ^ (y >> 1) ^ ((y&1)*A);
state->index = 0;
}
#ifdef TEST
#include "common.h"
#include "log.h"
int main(void)
{
int x=0;
int i, j;
AVRandomState state;
av_init_random(0xdeadbeef, &state);
for (j = 0; j < 10000; j++) {
START_TIMER
for (i = 0; i < 624; i++) {
x+= av_random(&state);
}
STOP_TIMER("624 calls of av_random");
}
av_log(NULL, AV_LOG_ERROR, "final value:%X\n", x);
return 0;
}
#endif

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/*
* Mersenne Twister Random Algorithm
* Copyright (c) 2006 Ryan Martell.
* Based on A C-program for MT19937, with initialization improved 2002/1/26. Coded by
* Takuji Nishimura and Makoto Matsumoto.
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_RANDOM_H
#define FFMPEG_RANDOM_H
#define AV_RANDOM_N 624
typedef struct {
unsigned int mt[AV_RANDOM_N]; ///< the array for the state vector
int index; ///< Current untempered value we use as the base.
} AVRandomState;
void av_init_random(unsigned int seed, AVRandomState *state); ///< To be inlined, the struct must be visible. So it does not make sense to try and keep it opaque with malloc/free-like calls.
void av_random_generate_untempered_numbers(AVRandomState *state); ///< Regenerate the untempered numbers (must be done every 624 iterations, or it will loop).
/**
* Generates a random number from the interval [0,0xffffffff].
*
* Please do NOT use the Mersenne Twister, it is slow. Use the random generator
* from lfg.c/h or a simple LCG like state= state*1664525+1013904223.
* If you still choose to use MT, expect that you will have to provide
* some evidence that it makes a difference for the case where you use it.
*/
static inline unsigned int av_random(AVRandomState *state)
{
unsigned int y;
// Regenerate the untempered numbers if we should...
if (state->index >= AV_RANDOM_N)
av_random_generate_untempered_numbers(state);
// Grab one...
y = state->mt[state->index++];
/* Now temper (Mersenne Twister coefficients). The coefficients for MT19937 are.. */
y ^= (y >> 11);
y ^= (y << 7) & 0x9d2c5680;
y ^= (y << 15) & 0xefc60000;
y ^= (y >> 18);
return y;
}
/** Return random in range [0-1] as double. */
static inline double av_random_real1(AVRandomState *state)
{
/* divided by 2^32-1 */
return av_random(state) * (1.0 / 4294967296.0);
}
#endif /* FFMPEG_RANDOM_H */

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/*
* Rational numbers
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file rational.c
* Rational numbers
* @author Michael Niedermayer <michaelni@gmx.at>
*/
//#include <math.h>
#include <limits.h>
#include "common.h"
#include "mathematics.h"
#include "rational.h"
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max){
AVRational a0={0,1}, a1={1,0};
int sign= (nom<0) ^ (den<0);
int64_t gcd= ff_gcd(FFABS(nom), FFABS(den));
if(gcd){
nom = FFABS(nom)/gcd;
den = FFABS(den)/gcd;
}
if(nom<=max && den<=max){
a1= (AVRational){nom, den};
den=0;
}
while(den){
uint64_t x = nom / den;
int64_t next_den= nom - den*x;
int64_t a2n= x*a1.num + a0.num;
int64_t a2d= x*a1.den + a0.den;
if(a2n > max || a2d > max){
if(a1.num) x= (max - a0.num) / a1.num;
if(a1.den) x= FFMIN(x, (max - a0.den) / a1.den);
if (den*(2*x*a1.den + a0.den) > nom*a1.den)
a1 = (AVRational){x*a1.num + a0.num, x*a1.den + a0.den};
break;
}
a0= a1;
a1= (AVRational){a2n, a2d};
nom= den;
den= next_den;
}
assert(ff_gcd(a1.num, a1.den) <= 1U);
*dst_nom = sign ? -a1.num : a1.num;
*dst_den = a1.den;
return den==0;
}
AVRational av_mul_q(AVRational b, AVRational c){
av_reduce(&b.num, &b.den, b.num * (int64_t)c.num, b.den * (int64_t)c.den, INT_MAX);
return b;
}
AVRational av_div_q(AVRational b, AVRational c){
return av_mul_q(b, (AVRational){c.den, c.num});
}
AVRational av_add_q(AVRational b, AVRational c){
av_reduce(&b.num, &b.den, b.num * (int64_t)c.den + c.num * (int64_t)b.den, b.den * (int64_t)c.den, INT_MAX);
return b;
}
AVRational av_sub_q(AVRational b, AVRational c){
return av_add_q(b, (AVRational){-c.num, c.den});
}
AVRational av_d2q(double d, int max){
AVRational a;
#define LOG2 0.69314718055994530941723212145817656807550013436025
int exponent= FFMAX( (int)(log(fabs(d) + 1e-20)/LOG2), 0);
int64_t den= 1LL << (61 - exponent);
av_reduce(&a.num, &a.den, (int64_t)(d * den + 0.5), den, max);
return a;
}

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/*
* Rational numbers
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file rational.h
* Rational numbers.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#ifndef FFMPEG_RATIONAL_H
#define FFMPEG_RATIONAL_H
#include <stdint.h>
#include "common.h"
/**
* Rational number num/den.
*/
typedef struct AVRational{
int num; ///< numerator
int den; ///< denominator
} AVRational;
/**
* Compare two rationals.
* @param a first rational
* @param b second rational
* @return 0 if a==b, 1 if a>b and -1 if a<b.
*/
static inline int av_cmp_q(AVRational a, AVRational b){
const int64_t tmp= a.num * (int64_t)b.den - b.num * (int64_t)a.den;
if(tmp) return (tmp>>63)|1;
else return 0;
}
/**
* Rational to double conversion.
* @param a rational to convert
* @return (double) a
*/
static inline double av_q2d(AVRational a){
return a.num / (double) a.den;
}
/**
* Reduce a fraction.
* This is useful for framerate calculations.
* @param dst_nom destination numerator
* @param dst_den destination denominator
* @param nom source numerator
* @param den source denominator
* @param max the maximum allowed for dst_nom & dst_den
* @return 1 if exact, 0 otherwise
*/
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
/**
* Multiplies two rationals.
* @param b first rational.
* @param c second rational.
* @return b*c.
*/
AVRational av_mul_q(AVRational b, AVRational c) av_const;
/**
* Divides one rational by another.
* @param b first rational.
* @param c second rational.
* @return b/c.
*/
AVRational av_div_q(AVRational b, AVRational c) av_const;
/**
* Adds two rationals.
* @param b first rational.
* @param c second rational.
* @return b+c.
*/
AVRational av_add_q(AVRational b, AVRational c) av_const;
/**
* Subtracts one rational from another.
* @param b first rational.
* @param c second rational.
* @return b-c.
*/
AVRational av_sub_q(AVRational b, AVRational c) av_const;
/**
* Converts a double precision floating point number to a rational.
* @param d double to convert
* @param max the maximum allowed numerator and denominator
* @return (AVRational) d.
*/
AVRational av_d2q(double d, int max) av_const;
#endif /* FFMPEG_RATIONAL_H */

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/*
* RC4 encryption/decryption/pseudo-random number generator
* Copyright (c) 2007 Reimar Doeffinger
*
* loosely based on LibTomCrypt by Tom St Denis
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "common.h"
#include "rc4.h"
void ff_rc4_enc(const uint8_t *key, int keylen, uint8_t *data, int datalen) {
int i, j;
uint8_t x, y;
uint8_t state[256];
for (i = 0; i < 256; i++)
state[i] = i;
y = 0;
// j is i % keylen
for (j = 0, i = 0; i < 256; i++, j++) {
if (j == keylen) j = 0;
y += state[i] + key[j];
FFSWAP(uint8_t, state[i], state[y]);
}
// state initialized, now do the real encryption
x = 1; y = state[1];
while (datalen-- > 0) {
uint8_t sum = state[x] + state[y];
FFSWAP(uint8_t, state[x], state[y]);
*data++ ^= state[sum];
x++;
y += state[x];
}
}

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/*
* RC4 encryption/decryption/pseudo-random number generator
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_RC4_H
#define FFMPEG_RC4_H
#include <stdint.h>
void ff_rc4_enc(const uint8_t *key, int keylen, uint8_t *data, int datalen);
#endif /* FFMPEG_RC4_H */

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/*
* Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
* based on public domain SHA-1 code by Steve Reid <steve@edmweb.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "common.h"
#include "bswap.h"
#include "sha1.h"
typedef struct AVSHA1 {
uint64_t count;
uint8_t buffer[64];
uint32_t state[5];
} AVSHA1;
const int av_sha1_size = sizeof(AVSHA1);
#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
#define blk0(i) (block[i] = be2me_32(((const uint32_t*)buffer)[i]))
#define blk(i) (block[i] = rol(block[i-3]^block[i-8]^block[i-14]^block[i-16],1))
#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y) +blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y) +blk (i)+0x5A827999+rol(v,5);w=rol(w,30);
#define R2(v,w,x,y,z,i) z+=( w^x ^y) +blk (i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk (i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
#define R4(v,w,x,y,z,i) z+=( w^x ^y) +blk (i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
/* Hash a single 512-bit block. This is the core of the algorithm. */
static void transform(uint32_t state[5], const uint8_t buffer[64]){
uint32_t block[80];
unsigned int i, a, b, c, d, e;
a = state[0];
b = state[1];
c = state[2];
d = state[3];
e = state[4];
#ifdef CONFIG_SMALL
for(i=0; i<80; i++){
int t;
if(i<16) t= be2me_32(((uint32_t*)buffer)[i]);
else t= rol(block[i-3]^block[i-8]^block[i-14]^block[i-16],1);
block[i]= t;
t+= e+rol(a,5);
if(i<40){
if(i<20) t+= ((b&(c^d))^d) +0x5A827999;
else t+= ( b^c ^d) +0x6ED9EBA1;
}else{
if(i<60) t+= (((b|c)&d)|(b&c))+0x8F1BBCDC;
else t+= ( b^c ^d) +0xCA62C1D6;
}
e= d;
d= c;
c= rol(b,30);
b= a;
a= t;
}
#else
for(i=0; i<15; i+=5){
R0(a,b,c,d,e,0+i); R0(e,a,b,c,d,1+i); R0(d,e,a,b,c,2+i); R0(c,d,e,a,b,3+i); R0(b,c,d,e,a,4+i);
}
R0(a,b,c,d,e,15); R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
for(i=20; i<40; i+=5){
R2(a,b,c,d,e,0+i); R2(e,a,b,c,d,1+i); R2(d,e,a,b,c,2+i); R2(c,d,e,a,b,3+i); R2(b,c,d,e,a,4+i);
}
for(; i<60; i+=5){
R3(a,b,c,d,e,0+i); R3(e,a,b,c,d,1+i); R3(d,e,a,b,c,2+i); R3(c,d,e,a,b,3+i); R3(b,c,d,e,a,4+i);
}
for(; i<80; i+=5){
R4(a,b,c,d,e,0+i); R4(e,a,b,c,d,1+i); R4(d,e,a,b,c,2+i); R4(c,d,e,a,b,3+i); R4(b,c,d,e,a,4+i);
}
#endif
state[0] += a;
state[1] += b;
state[2] += c;
state[3] += d;
state[4] += e;
}
void av_sha1_init(AVSHA1* ctx){
ctx->state[0] = 0x67452301;
ctx->state[1] = 0xEFCDAB89;
ctx->state[2] = 0x98BADCFE;
ctx->state[3] = 0x10325476;
ctx->state[4] = 0xC3D2E1F0;
ctx->count = 0;
}
void av_sha1_update(AVSHA1* ctx, const uint8_t* data, unsigned int len){
unsigned int i, j;
j = ctx->count & 63;
ctx->count += len;
#ifdef CONFIG_SMALL
for( i = 0; i < len; i++ ){
ctx->buffer[ j++ ] = data[i];
if( 64 == j ){
transform(ctx->state, ctx->buffer);
j = 0;
}
}
#else
if ((j + len) > 63) {
memcpy(&ctx->buffer[j], data, (i = 64-j));
transform(ctx->state, ctx->buffer);
for ( ; i + 63 < len; i += 64) {
transform(ctx->state, &data[i]);
}
j=0;
}
else i = 0;
memcpy(&ctx->buffer[j], &data[i], len - i);
#endif
}
void av_sha1_final(AVSHA1* ctx, uint8_t digest[20]){
int i;
uint64_t finalcount= be2me_64(ctx->count<<3);
av_sha1_update(ctx, "\200", 1);
while ((ctx->count & 63) != 56) {
av_sha1_update(ctx, "", 1);
}
av_sha1_update(ctx, (uint8_t *)&finalcount, 8); /* Should cause a transform() */
for(i=0; i<5; i++)
((uint32_t*)digest)[i]= be2me_32(ctx->state[i]);
}
// use the following to test
// gcc -DTEST -DHAVE_AV_CONFIG_H -I.. sha1.c -O2 -W -Wall -o sha1 && time ./sha1
#ifdef TEST
#include <stdio.h>
#undef printf
int main(void){
int i, k;
AVSHA1 ctx;
unsigned char digest[20];
for(k=0; k<3; k++){
av_sha1_init(&ctx);
if(k==0)
av_sha1_update(&ctx, "abc", 3);
else if(k==1)
av_sha1_update(&ctx, "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", 56);
else
for(i=0; i<1000*1000; i++)
av_sha1_update(&ctx, "a", 1);
av_sha1_final(&ctx, digest);
for (i = 0; i < 20; i++)
printf("%02X", digest[i]);
putchar('\n');
}
//Test Vectors (from FIPS PUB 180-1)
printf("A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D\n"
"84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1\n"
"34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F\n");
return 0;
}
#endif

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/*
* Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_SHA1_H
#define FFMPEG_SHA1_H
#include <stdint.h>
extern const int av_sha1_size;
struct AVSHA1;
void av_sha1_init(struct AVSHA1* context);
void av_sha1_update(struct AVSHA1* context, const uint8_t* data, unsigned int len);
void av_sha1_final(struct AVSHA1* context, uint8_t digest[20]);
#endif /* FFMPEG_SHA1_H */

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <inttypes.h>
#include <stdio.h>
#include <assert.h>
#include "softfloat.h"
#include "common.h"
#include "log.h"
#undef printf
int main(void){
SoftFloat one= av_int2sf(1, 0);
SoftFloat sf1, sf2;
double d1, d2;
int i, j;
av_log_level = AV_LOG_DEBUG;
d1= 1;
for(i= 0; i<10; i++){
d1= 1/(d1+1);
}
printf("test1 double=%d\n", (int)(d1 * (1<<24)));
sf1= one;
for(i= 0; i<10; i++){
sf1= av_div_sf(one, av_normalize_sf(av_add_sf(one, sf1)));
}
printf("test1 sf =%d\n", av_sf2int(sf1, 24));
for(i= 0; i<100; i++){
START_TIMER
d1= i;
d2= i/100.0;
for(j= 0; j<1000; j++){
d1= (d1+1)*d2;
}
STOP_TIMER("float add mul")
}
printf("test2 double=%d\n", (int)(d1 * (1<<24)));
for(i= 0; i<100; i++){
START_TIMER
sf1= av_int2sf(i, 0);
sf2= av_div_sf(av_int2sf(i, 2), av_int2sf(200, 3));
for(j= 0; j<1000; j++){
sf1= av_mul_sf(av_add_sf(sf1, one),sf2);
}
STOP_TIMER("softfloat add mul")
}
printf("test2 sf =%d (%d %d)\n", av_sf2int(sf1, 24), sf1.exp, sf1.mant);
return 0;
}

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/*
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_SOFTFLOAT_H
#define FFMPEG_SOFTFLOAT_H
#include <stdint.h>
#include "common.h"
#define MIN_EXP -126
#define MAX_EXP 126
#define ONE_BITS 29
typedef struct SoftFloat{
int32_t exp;
int32_t mant;
}SoftFloat;
static av_const SoftFloat av_normalize_sf(SoftFloat a){
if(a.mant){
#if 1
while((a.mant + 0x20000000U)<0x40000000U){
a.mant += a.mant;
a.exp -= 1;
}
#else
int s=ONE_BITS + 1 - av_log2(a.mant ^ (a.mant<<1));
a.exp -= s;
a.mant <<= s;
#endif
if(a.exp < MIN_EXP){
a.exp = MIN_EXP;
a.mant= 0;
}
}else{
a.exp= MIN_EXP;
}
return a;
}
static inline av_const SoftFloat av_normalize1_sf(SoftFloat a){
#if 1
if(a.mant + 0x40000000 < 0){
a.exp++;
a.mant>>=1;
}
return a;
#elif 1
int t= a.mant + 0x40000000 < 0;
return (SoftFloat){a.exp+t, a.mant>>t};
#else
int t= (a.mant + 0x40000000U)>>31;
return (SoftFloat){a.exp+t, a.mant>>t};
#endif
}
/**
*
* @return will not be more denormalized then a+b, so if either input is
* normalized then the output will not be worse then the other input
* if both are normalized then the output will be normalized
*/
static inline av_const SoftFloat av_mul_sf(SoftFloat a, SoftFloat b){
a.exp += b.exp;
a.mant = (a.mant * (int64_t)b.mant) >> ONE_BITS;
return av_normalize1_sf(a);
}
/**
*
* b has to be normalized and not zero
* @return will not be more denormalized then a
*/
static av_const SoftFloat av_div_sf(SoftFloat a, SoftFloat b){
a.exp -= b.exp+1;
a.mant = ((int64_t)a.mant<<(ONE_BITS+1)) / b.mant;
return av_normalize1_sf(a);
}
static inline av_const int av_cmp_sf(SoftFloat a, SoftFloat b){
int t= a.exp - b.exp;
if(t<0) return (a.mant >> (-t)) - b.mant ;
else return a.mant - (b.mant >> t);
}
static inline av_const SoftFloat av_add_sf(SoftFloat a, SoftFloat b){
int t= a.exp - b.exp;
if(t<0) return av_normalize1_sf((SoftFloat){b.exp, b.mant + (a.mant >> (-t))});
else return av_normalize1_sf((SoftFloat){a.exp, a.mant + (b.mant >> t )});
}
static inline av_const SoftFloat av_sub_sf(SoftFloat a, SoftFloat b){
return av_add_sf(a, (SoftFloat){b.exp, -b.mant});
}
//FIXME sqrt, log, exp, pow, sin, cos
static inline av_const SoftFloat av_int2sf(int v, int frac_bits){
return av_normalize_sf((SoftFloat){ONE_BITS-frac_bits, v});
}
/**
*
* rounding is to -inf
*/
static inline av_const int av_sf2int(SoftFloat v, int frac_bits){
v.exp += frac_bits - ONE_BITS;
if(v.exp >= 0) return v.mant << v.exp ;
else return v.mant >>(-v.exp);
}
#endif /* FFMPEG_SOFTFLOAT_H */

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/*
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
* Copyright (c) 2007 Mans Rullgard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "avstring.h"
int av_strstart(const char *str, const char *pfx, const char **ptr)
{
while (*pfx && *pfx == *str) {
pfx++;
str++;
}
if (!*pfx && ptr)
*ptr = str;
return !*pfx;
}
int av_stristart(const char *str, const char *pfx, const char **ptr)
{
while (*pfx && toupper((unsigned)*pfx) == toupper((unsigned)*str)) {
pfx++;
str++;
}
if (!*pfx && ptr)
*ptr = str;
return !*pfx;
}
size_t av_strlcpy(char *dst, const char *src, size_t size)
{
size_t len = 0;
while (++len < size && *src)
*dst++ = *src++;
if (len <= size)
*dst = 0;
return len + strlen(src) - 1;
}
size_t av_strlcat(char *dst, const char *src, size_t size)
{
size_t len = strlen(dst);
if (size <= len + 1)
return len + strlen(src);
return len + av_strlcpy(dst + len, src, size - len);
}
size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...)
{
int len = strlen(dst);
va_list vl;
va_start(vl, fmt);
len += vsnprintf(dst + len, size > len ? size - len : 0, fmt, vl);
va_end(vl);
return len;
}

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "common.h"
#include "log.h"
#include "tree.h"
typedef struct AVTreeNode{
struct AVTreeNode *child[2];
void *elem;
int state;
}AVTreeNode;
const int av_tree_node_size = sizeof(AVTreeNode);
void *av_tree_find(const AVTreeNode *t, void *key, int (*cmp)(void *key, const void *b), void *next[2]){
if(t){
unsigned int v= cmp(key, t->elem);
if(v){
if(next) next[v>>31]= t->elem;
return av_tree_find(t->child[(v>>31)^1], key, cmp, next);
}else{
if(next){
av_tree_find(t->child[0], key, cmp, next);
av_tree_find(t->child[1], key, cmp, next);
}
return t->elem;
}
}
return NULL;
}
void *av_tree_insert(AVTreeNode **tp, void *key, int (*cmp)(void *key, const void *b), AVTreeNode **next){
AVTreeNode *t= *tp;
if(t){
unsigned int v= cmp(t->elem, key);
void *ret;
if(!v){
if(*next)
return t->elem;
else if(t->child[0]||t->child[1]){
int i= !t->child[0];
void *next_elem[2];
av_tree_find(t->child[i], key, cmp, next_elem);
key= t->elem= next_elem[i];
v= -i;
}else{
*next= t;
*tp=NULL;
return NULL;
}
}
ret= av_tree_insert(&t->child[v>>31], key, cmp, next);
if(!ret){
int i= (v>>31) ^ !!*next;
AVTreeNode **child= &t->child[i];
t->state += 2*i - 1;
if(!(t->state&1)){
if(t->state){
/* The following code is equivalent to
if((*child)->state*2 == -t->state)
rotate(child, i^1);
rotate(tp, i);
with rotate():
static void rotate(AVTreeNode **tp, int i){
AVTreeNode *t= *tp;
*tp= t->child[i];
t->child[i]= t->child[i]->child[i^1];
(*tp)->child[i^1]= t;
i= 4*t->state + 2*(*tp)->state + 12;
t ->state= ((0x614586 >> i) & 3)-1;
(*tp)->state= ((*tp)->state>>1) + ((0x400EEA >> i) & 3)-1;
}
but such a rotate function is both bigger and slower
*/
if((*child)->state*2 == -t->state){
*tp= (*child)->child[i^1];
(*child)->child[i^1]= (*tp)->child[i];
(*tp)->child[i]= *child;
*child= (*tp)->child[i^1];
(*tp)->child[i^1]= t;
(*tp)->child[0]->state= -((*tp)->state>0);
(*tp)->child[1]->state= (*tp)->state<0 ;
(*tp)->state=0;
}else{
*tp= *child;
*child= (*child)->child[i^1];
(*tp)->child[i^1]= t;
if((*tp)->state) t->state = 0;
else t->state>>= 1;
(*tp)->state= -t->state;
}
}
}
if(!(*tp)->state ^ !!*next)
return key;
}
return ret;
}else{
*tp= *next; *next= NULL;
(*tp)->elem= key;
return NULL;
}
}
void av_tree_destroy(AVTreeNode *t){
av_tree_destroy(t->child[0]);
av_tree_destroy(t->child[1]);
av_free(t);
}
#if 0
void av_tree_enumerate(AVTreeNode *t, void *opaque, int (*f)(void *opaque, void *elem)){
int v= f(opaque, t->elem);
if(v>=0) av_tree_enumerate(t->child[0], opaque, f);
if(v<=0) av_tree_enumerate(t->child[1], opaque, f);
}
#endif
#ifdef TEST
#undef random
static int check(AVTreeNode *t){
if(t){
int left= check(t->child[0]);
int right= check(t->child[1]);
if(left>999 || right>999)
return 1000;
if(right - left != t->state)
return 1000;
if(t->state>1 || t->state<-1)
return 1000;
return FFMAX(left, right)+1;
}
return 0;
}
static void print(AVTreeNode *t, int depth){
int i;
for(i=0; i<depth*4; i++) av_log(NULL, AV_LOG_ERROR, " ");
if(t){
av_log(NULL, AV_LOG_ERROR, "Node %p %2d %4d\n", t, t->state, t->elem);
print(t->child[0], depth+1);
print(t->child[1], depth+1);
}else
av_log(NULL, AV_LOG_ERROR, "NULL\n");
}
int cmp(const void *a, const void *b){
return a-b;
}
int main(void){
int i,k;
AVTreeNode *root= NULL, *node=NULL;
for(i=0; i<10000; i++){
int j= (random()%86294);
if(check(root) > 999){
av_log(NULL, AV_LOG_ERROR, "FATAL error %d\n", i);
print(root, 0);
return -1;
}
av_log(NULL, AV_LOG_ERROR, "inserting %4d\n", j);
if(!node)
node= av_mallocz(av_tree_node_size);
av_tree_insert(&root, (void*)(j+1), cmp, &node);
j= (random()%86294);
k= av_tree_find(root, (void*)(j+1), cmp, NULL);
if(k){
AVTreeNode *node2=NULL;
av_log(NULL, AV_LOG_ERROR, "removing %4d\n", j);
av_tree_insert(&root, (void*)(j+1), cmp, &node2);
k= av_tree_find(root, (void*)(j+1), cmp, NULL);
if(k)
av_log(NULL, AV_LOG_ERROR, "removial failure %d\n", i);
}
}
return 0;
}
#endif

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file tree.h
* A tree container.
* Insertion, Removial, Finding equal, largest which is smaller than and
* smallest which is larger than all have O(log n) worst case time.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#ifndef FFMPEG_TREE_H
#define FFMPEG_TREE_H
struct AVTreeNode;
extern const int av_tree_node_size;
/**
* Finds an element.
* @param root a pointer to the root node of the tree
* @param next If next is not NULL then next[0] will contain the previous
* element and next[1] the next element if either does not exist
* then the corresponding entry in next is unchanged.
* @return An element with cmp(key, elem)==0 or NULL if no such element exists in
* the tree.
*/
void *av_tree_find(const struct AVTreeNode *root, void *key, int (*cmp)(void *key, const void *b), void *next[2]);
/**
* Inserts or removes an element.
* If *next is NULL then the element supplied will be removed, if no such
* element exists behavior is undefined.
* If *next is not NULL then the element supplied will be inserted, unless
* it already exists in the tree.
* @param rootp A pointer to a pointer to the root node of the tree. Note that
* the root node can change during insertions, this is required
* to keep the tree balanced.
* @param next Used to allocate and free AVTreeNodes. For insertion the user
* must set it to an allocated and zeroed object of at least
* av_tree_node_size bytes size. av_tree_insert() will set it to
* NULL if it has been consumed.
* For deleting elements *next is set to NULL by the user and
* av_tree_node_size() will set it to the AVTreeNode which was
* used for the removed element.
* This allows the use of flat arrays, which have
* lower overhead compared to many malloced elements.
* You might want to define a function like:
* void *tree_insert(struct AVTreeNode **rootp, void *key, int (*cmp)(void *key, const void *b), AVTreeNode **next){
* if(!*next) *next= av_mallocz(av_tree_node_size);
* return av_tree_insert(rootp, key, cmp, next);
* }
* void *tree_remove(struct AVTreeNode **rootp, void *key, int (*cmp)(void *key, const void *b, AVTreeNode **next)){
* if(*next) av_freep(next);
* return av_tree_insert(rootp, key, cmp, next);
* }
*
* @return If no insertion happened, the found element.
* If an insertion or removial happened, then either key or NULL will be returned.
* Which one it is depends on the tree state and the implementation. You
* should make no assumptions that it's one or the other in the code.
*/
void *av_tree_insert(struct AVTreeNode **rootp, void *key, int (*cmp)(void *key, const void *b), struct AVTreeNode **next);
void av_tree_destroy(struct AVTreeNode *t);
#endif /* FFMPEG_TREE_H */

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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avutil.h"
/**
* @file libavutil/utils.c
* various utility functions
*/
unsigned avutil_version(void)
{
return LIBAVUTIL_VERSION_INT;
}

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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef FFMPEG_X86CPU_H
#define FFMPEG_X86CPU_H
#include <stdint.h>
#include "config.h"
#ifdef ARCH_X86_64
# define REG_a "rax"
# define REG_b "rbx"
# define REG_c "rcx"
# define REG_d "rdx"
# define REG_D "rdi"
# define REG_S "rsi"
# define PTR_SIZE "8"
typedef int64_t x86_reg;
# define REG_SP "rsp"
# define REG_BP "rbp"
# define REGBP rbp
# define REGa rax
# define REGb rbx
# define REGc rcx
# define REGd rdx
# define REGSP rsp
#else
# define REG_a "eax"
# define REG_b "ebx"
# define REG_c "ecx"
# define REG_d "edx"
# define REG_D "edi"
# define REG_S "esi"
# define PTR_SIZE "4"
typedef int32_t x86_reg;
# define REG_SP "esp"
# define REG_BP "ebp"
# define REGBP ebp
# define REGa eax
# define REGb ebx
# define REGc ecx
# define REGd edx
# define REGSP esp
#endif
#if defined(ARCH_X86_64) || (defined(ARCH_X86_32) && defined(HAVE_EBX_AVAILABLE) && defined(HAVE_EBP_AVAILABLE))
# define HAVE_7REGS 1
#endif
#if defined(ARCH_X86_64) || (defined(ARCH_X86_32) && (defined(HAVE_EBX_AVAILABLE) || defined(HAVE_EBP_AVAILABLE)))
# define HAVE_6REGS 1
#endif
#if defined(ARCH_X86_64) && defined(PIC)
# define BROKEN_RELOCATIONS 1
#endif
#endif /* FFMPEG_X86CPU_H */