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kolibrios/programs/media/ac97snd/mpg/mpg123.h
Sergey Semyonov (Serge) 38ed47b73c uFMOD 1.25.1 from Quantum and some minor bugfixes 
git-svn-id: svn://kolibrios.org@646 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-10-14 17:38:57 +00:00

363 lines
11 KiB
C
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/*
mpg123: main code of the program (not of the decoder...)
copyright 1995-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
see COPYING and AUTHORS files in distribution or http://mpg123.de
initially written by Michael Hipp
mpg123 defines
used source: musicout.h from mpegaudio package
*/
#ifdef __cplusplus
extern "C" {
#endif
#include <stdio.h>
#include <math.h>
#ifndef _AUDIO_H_
#define _AUDIO_H_
typedef unsigned char byte;
#define off_t long
//#define I486_OPT 1
#define SKIP_JUNK 1
# define M_PI 3.14159265358979323846
# define M_SQRT2 1.41421356237309504880
# define REAL_IS_FLOAT
# define NEW_DCT9
#ifdef REAL_IS_FLOAT
# define real float
# define REAL_SCANF "%f"
# define REAL_PRINTF "%f"
#else
# define real double
# define REAL_SCANF "%lf"
# define REAL_PRINTF "%f"
#endif
#ifndef DOUBLE_TO_REAL
# define DOUBLE_TO_REAL(x) (x)
#endif
#ifndef REAL_TO_SHORT
# define REAL_TO_SHORT(x) (x)
#endif
#ifndef REAL_PLUS_32767
# define REAL_PLUS_32767 32767.0
#endif
#ifndef REAL_MINUS_32768
# define REAL_MINUS_32768 -32768.0
#endif
#ifndef REAL_MUL
# define REAL_MUL(x, y) ((x) * (y))
#endif
#define INLINE
/* AUDIOBUFSIZE = n*64 with n=1,2,3 ... */
#define AUDIOBUFSIZE 16384
#define FALSE 0
#define TRUE 1
#define MAX_NAME_SIZE 81
#define SBLIMIT 32
#define SCALE_BLOCK 12
#define SSLIMIT 18
#define MPG_MD_STEREO 0
#define MPG_MD_JOINT_STEREO 1
#define MPG_MD_DUAL_CHANNEL 2
#define MPG_MD_MONO 3
/* I suspect that 32767 would be a better idea here, but Michael put this in... */
#define MAXOUTBURST 32768
/* Pre Shift fo 16 to 8 bit converter table */
#define AUSHIFT (3)
struct bitstream_info
{ int bitindex;
unsigned char *wordpointer;
};
extern struct bitstream_info bsi;
struct reader
{
char *hFile;
unsigned char *buffer;
unsigned char *stream;
int strpos;
int strremain;
int filelen;
int filepos;
int (*head_read)(struct reader *,unsigned long *newhead);
int (*read_frame_body)(struct reader *,unsigned char *,int size);
};
int parse_new_id3(struct reader *rd, unsigned long newhead);
struct al_table
{ short bits;
short d;
};
struct frame {
struct al_table *alloc;
int (*synth)(real *,int,unsigned char *,int *);
int (*synth_mono)(real *,unsigned char *,int *);
int stereo; /* I _think_ 1 for mono and 2 for stereo */
int jsbound;
int single;
int II_sblimit;
int down_sample_sblimit;
int lsf; /* 0: MPEG 1.0; 1: MPEG 2.0/2.5 -- both used as bool and array index! */
int mpeg25;
int down_sample;
int header_change;
int lay;
int (*do_layer)(struct frame *fr,byte *pcm_out, int *pcm_size);
int error_protection;
int bitrate_index;
int sampling_frequency;
int padding;
int extension;
int mode;
int mode_ext;
int copyright;
int original;
int emphasis;
int framesize; /* computed framesize */
int vbr; /* 1 if variable bitrate was detected */
unsigned long num; /* the nth frame in some stream... */
};
#if 0
struct parameter {
int aggressive; /* renice to max. priority */
int shuffle; /* shuffle/random play */
int remote; /* remote operation */
int remote_err; /* remote operation to stderr */
int outmode; /* where to out the decoded sampels */
int quiet; /* shut up! */
int xterm_title; /* Change xterm title to song names? */
long usebuffer; /* second level buffer size */
int tryresync; /* resync stream after error */
int verbose; /* verbose level */
int force_mono;
int force_stereo;
int force_8bit;
long force_rate;
int down_sample;
int checkrange;
long doublespeed;
long halfspeed;
int force_reopen;
long realtime;
char filename[256];
long listentry; /* possibility to choose playback of one entry in playlist (0: off, > 0 : select, < 0; just show list*/
int rva; /* (which) rva to do: <0: nothing, 0: radio/mix/track 1: album/audiophile */
char* listname; /* name of playlist */
int long_id3;
};
#endif
#if 0
struct reader {
int (*init)(struct reader *);
void (*close)(struct reader *);
int (*head_read)(struct reader *,unsigned long *newhead);
int (*head_shift)(struct reader *,unsigned long *head);
long (*skip_bytes)(struct reader *,off_t len);
int (*read_frame_body)(struct reader *,unsigned char *,int size);
int (*back_bytes)(struct reader *,off_t bytes);
int (*back_frame)(struct reader *,struct frame *,long num);
off_t (*tell)(struct reader *);
void (*rewind)(struct reader *);
off_t filelen;
off_t filepos;
int filept;
int flags;
unsigned char id3buf[128];
};
#endif
#define READER_FD_OPENED 0x1
#define READER_ID3TAG 0x2
#define READER_SEEKABLE 0x4
//extern void audio_flush(int, struct audio_info_struct *);
//extern void print_header(struct frame *);
//extern void print_header_compact(struct frame *);
//extern void print_id3_tag(unsigned char *buf);
//extern int split_dir_file(const char *path, char **dname, char **fname);
extern unsigned int get1bit(void);
extern unsigned int getbits(int);
extern unsigned int getbits_fast(int);
//extern void backbits(int);
//extern int getbitoffset(void);
//extern int getbyte(void);
//extern void set_pointer(long);
//extern unsigned char *pcm_sample;
//extern int pcm_point;
//extern int audiobufsize;
//extern int OutputDescriptor;
#ifdef VARMODESUPPORT
extern int varmode;
extern int playlimit;
#endif
struct gr_info_s {
int scfsi;
unsigned part2_3_length;
unsigned big_values;
unsigned scalefac_compress;
unsigned block_type;
unsigned mixed_block_flag;
unsigned table_select[3];
unsigned subblock_gain[3];
unsigned maxband[3];
unsigned maxbandl;
unsigned maxb;
unsigned region1start;
unsigned region2start;
unsigned preflag;
unsigned scalefac_scale;
unsigned count1table_select;
real *full_gain[3];
real *pow2gain;
};
struct III_sideinfo
{
unsigned main_data_begin;
unsigned private_bits;
struct {
struct gr_info_s gr[2];
} ch[2];
};
extern int open_stream(char *,int fd);
extern void read_frame_init (struct frame* fr);
int read_frame(struct reader *rd, struct frame *fr);
/* why extern? */
void prepare_audioinfo(struct frame *fr, struct audio_info_struct *nai);
int play_frame(int init,struct frame *fr);
int do_layer1(struct frame *fr,byte *pcm_sample, int *pcm_point);
int do_layer2(struct frame *fr,byte *pcm_sample, int *pcm_point);
int do_layer3(struct frame *fr,byte *pcm_sample, int *pcm_point);
extern void do_equalizer(real *bandPtr,int channel);
#ifdef PENTIUM_OPT
extern int synth_1to1_pent (real *,int,unsigned char *);
#endif
extern int synth_1to1 (real *,int,unsigned char *,int *);
extern int synth_1to1_8bit (real *,int,unsigned char *,int *);
extern int synth_1to1_mono (real *,unsigned char *,int *);
extern int synth_1to1_mono2stereo (real *,unsigned char *,int *);
extern int synth_1to1_8bit_mono (real *,unsigned char *,int *);
extern int synth_1to1_8bit_mono2stereo (real *,unsigned char *,int *);
extern int synth_2to1 (real *,int,unsigned char *,int *);
extern int synth_2to1_8bit (real *,int,unsigned char *,int *);
extern int synth_2to1_mono (real *,unsigned char *,int *);
extern int synth_2to1_mono2stereo (real *,unsigned char *,int *);
extern int synth_2to1_8bit_mono (real *,unsigned char *,int *);
extern int synth_2to1_8bit_mono2stereo (real *,unsigned char *,int *);
extern int synth_4to1 (real *,int,unsigned char *,int *);
extern int synth_4to1_8bit (real *,int,unsigned char *,int *);
extern int synth_4to1_mono (real *,unsigned char *,int *);
extern int synth_4to1_mono2stereo (real *,unsigned char *,int *);
extern int synth_4to1_8bit_mono (real *,unsigned char *,int *);
extern int synth_4to1_8bit_mono2stereo (real *,unsigned char *,int *);
extern int synth_ntom (real *,int,unsigned char *,int *);
extern int synth_ntom_8bit (real *,int,unsigned char *,int *);
extern int synth_ntom_mono (real *,unsigned char *,int *);
extern int synth_ntom_mono2stereo (real *,unsigned char *,int *);
extern int synth_ntom_8bit_mono (real *,unsigned char *,int *);
extern int synth_ntom_8bit_mono2stereo (real *,unsigned char *,int *);
extern void rewindNbits(int bits);
extern int hsstell(void);
extern void set_pointer(long);
extern void huffman_decoder(int ,int *);
extern void huffman_count1(int,int *);
extern void print_stat(struct frame *fr,unsigned long no,long buffsize,struct audio_info_struct *ai);
extern int get_songlen(struct frame *fr,int no);
extern void init_layer3(int);
extern void init_layer2(void);
extern void make_decode_tables(long scale);
extern int make_conv16to8_table(int);
extern void dct64(real *,real *,real *);
#ifdef USE_MMX
extern void dct64_MMX(short *a,short *b,real *c);
extern int synth_1to1_MMX(real *, int, short *, short *, int *);
#endif
extern int synth_ntom_set_step(long,long);
extern unsigned char *conv16to8;
extern long freqs[9];
extern real muls[27][64];
extern real decwin[512+32];
#ifndef USE_MMX
extern real *pnts[5];
#endif
extern real equalizer[2][32];
extern real equalizer_sum[2][32];
extern int equalizer_cnt;
extern struct audio_name audio_val2name[];
//extern struct parameter param;
/* 486 optimizations */
#define FIR_BUFFER_SIZE 128
extern void dct64_486(int *a,int *b,real *c);
extern int synth_1to1_486(real *bandPtr,int channel,unsigned char *out,int nb_blocks);
/* 3DNow! optimizations */
#ifdef USE_3DNOW
extern int getcpuflags(void);
extern void dct36(real *,real *,real *,real *,real *);
extern void dct36_3dnow(real *,real *,real *,real *,real *);
extern int synth_1to1_3dnow(real *,int,unsigned char *,int *);
#endif
/* avoid the SIGINT in terminal control */
void next_track(void);
extern long outscale;
#endif
void set_pointer(long backstep);
int __stdcall create_reader(struct reader *rd,byte *buffer, int buffsize);
int __stdcall init_reader(struct reader *rd, char *file);
int __stdcall decode_header(struct frame *fr,unsigned long newhead);
int __stdcall set_reader(struct reader *rd, unsigned int filepos);
double pow_test(double, double);
void * __cdecl mem_cpy(void * dst,const void * src,size_t count);
void init_dct();
void reset_mpg();
#ifdef __cplusplus
}
#endif
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