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libfreerdp-codec: NSCodec code style cleanup

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This commit is contained in:
Marc-André Moreau 2011-10-02 21:07:07 -04:00
parent 0401f7c17e
commit f43c9c462f
3 changed files with 101 additions and 59 deletions
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6
include/freerdp/codec/nsc.h
View File

@ -1,9 +1,8 @@
/**
* FreeRDP: A Remote Desktop Protocol client.
* NSCODEC Codec Library - API Header
* NSCodec Codec
*
* Copyright 2011 Samsung
* Author Jiten Pathy
* Copyright 2011 Samsung, Author Jiten Pathy
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -66,6 +65,7 @@ FREERDP_API void nsc_cl_expand(STREAM* stream, uint8 shiftcount, uint32 origsz);
FREERDP_API void nsc_colorloss_recover(NSC_CONTEXT* context);
FREERDP_API void nsc_ycocg_rgb(NSC_CONTEXT* context);
FREERDP_API void nsc_context_destroy(NSC_CONTEXT* context);
#ifdef __cplusplus
}
#endif

2
include/freerdp/codec/rfx.h
View File

@ -1,6 +1,6 @@
/**
* FreeRDP: A Remote Desktop Protocol client.
* RemoteFX Codec Library - API Header
* RemoteFX Codec
*
* Copyright 2011 Vic Lee
*

152
libfreerdp-codec/nsc.c
View File

@ -1,21 +1,21 @@
/**
* FreeRDP: A Remote Desktop Protocol client.
* NSCODEC Codec Library
*
* Copyright 2011 Samsung
* Author Jiten Pathy
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
* FreeRDP: A Remote Desktop Protocol client.
* NSCodec Codec
*
* Copyright 2011 Samsung, Author Jiten Pathy
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
@ -24,7 +24,7 @@
#include <freerdp/codec/nsc.h>
#include <freerdp/utils/memory.h>
/* we store the 9 th bits at the end of stream as bitstream */
/* we store the 9th bits at the end of stream as bitstream */
void nsc_cl_expand(STREAM* stream, uint8 shiftcount, uint32 origsz)
{
uint8* sbitstream;
@ -32,14 +32,18 @@ void nsc_cl_expand(STREAM* stream, uint8 shiftcount, uint32 origsz)
uint8 sign,bitoff;
uint32 bitno;
sbitstream = stream->data + origsz;
do{
do
{
sign = (*(stream->p) << (shiftcount - 1)) & 0x80;
bitno = stream->p - stream->data;
*(stream->p++) <<= shiftcount;
temptr = sbitstream + ((bitno) >> 3);
bitoff = bitno % 0x8;
(*temptr) |= (sign >> bitoff);
}while(stream->p - stream->data < origsz);
}
while(stream->p - stream->data < origsz);
stream->p = stream->data;
}
@ -55,29 +59,36 @@ void nsc_chroma_supersample(NSC_CONTEXT* context)
uint32 alloclen, orglen, bytno;
STREAM* new_s;
STREAM* temp;
w = context->width;
h = context->height;
alloclen = orglen = w * h;
pw = ROUND_UP_TO(context->width, 8);
temp = stream_new(0);
for (i=0; i<3; i++)
for (i = 0; i < 3; i++)
{
if(i != 0)
alloclen = orglen + ((orglen & 0x7) ? (orglen >> 3) + 0x1 : (orglen >> 3));
new_s = stream_new(alloclen);
stream_attach(temp, context->org_buf[i]->data, context->org_buf[i]->size);
sbitstream = temp->data + context->OrgByteCount[i];
nbitstream = new_s->data + orglen;
cur = new_s->p;
if(i == 1)
pw >>= 1;
while((temp->p-temp->data) < context->OrgByteCount[i])
while ((temp->p - temp->data) < context->OrgByteCount[i])
{
bytno = temp->p - temp->data;
bitoff = bytno % 0x8;
stream_read_uint8(temp, val);
*cur = val;
row = (temp->p - temp->data) % pw;
if(i == 0)
{
cur++;
@ -91,13 +102,15 @@ void nsc_chroma_supersample(NSC_CONTEXT* context)
bytno = cur - new_s->data;
bitoff = bytno % 8;
*(nbitstream + (bytno >> 3)) |= (sign >> bitoff);
if((bytno+w) < orglen)
if ((bytno+w) < orglen)
{
*(cur + w) = val;
bitoff = (bytno + w) % 8;
*(nbitstream + ((bytno + w) >> 3)) |= (sign >> bitoff);
}
if((bytno+1) % w)
if ((bytno+1) % w)
{
*(cur+1) = val;
bitoff = (bytno + 1) % 8;
@ -109,19 +122,23 @@ void nsc_chroma_supersample(NSC_CONTEXT* context)
*(nbitstream + ((bytno + w + 1) >> 3)) |= (sign >> bitoff);
}
}
cur += 2;
bytno = cur - new_s->data;
if(((bytno/w) < h) && ((bytno) % w) < 2 )
if (((bytno/w) < h) && ((bytno) % w) < 2 )
{
if(w % 2)
cur += w-1;
else
cur += w;
}
if((row*2) >= w)
if ((row*2) >= w)
stream_seek(temp, pw-row);
}
}
xfree(temp->data);
stream_detach(temp);
stream_attach(context->org_buf[i], new_s->data, new_s->size);
@ -135,12 +152,16 @@ void nsc_ycocg_rgb(NSC_CONTEXT* context)
uint8 bitoff, sign[2], ycocg[3], rgb[3], i;
uint32 bytno, size;
size = context->OrgByteCount[0];
for(i = 1;i < 3;i++)
for (i = 1; i < 3; i++)
sbitstream[i-1] = context->org_buf[i]->data + context->OrgByteCount[i];
do{
for(i = 0;i < 3;i++)
do
{
for (i = 0; i < 3; i++)
ycocg[i] = *(context->org_buf[i]->p);
for(i = 1;i < 3;i++)
for(i = 1; i < 3; i++)
{
bytno = context->OrgByteCount[i] - size;
bitoff = bytno % 8;
@ -148,19 +169,20 @@ void nsc_ycocg_rgb(NSC_CONTEXT* context)
if(sign[i-1])
ycocg[i] = ~(ycocg[i]) + 0x1;
}
if(sign[0] && sign[1])
if (sign[0] && sign[1])
{
rgb[0] = ycocg[0] - (ycocg[1] >> 1) + (ycocg[2] >> 1);
rgb[1] = ycocg[0] - (ycocg[2] >> 1);
rgb[2] = ycocg[0] + (ycocg[1] >> 1) + (ycocg[2] >> 1);
}
else if(sign[0])
else if (sign[0])
{
rgb[0] = ycocg[0] - (ycocg[1] >> 1) - (ycocg[2] >> 1);
rgb[1] = ycocg[0] + (ycocg[2] >> 1);
rgb[2] = ycocg[0] + (ycocg[1] >> 1) - (ycocg[2] >> 1);
}
else if(sign[1])
else if (sign[1])
{
rgb[0] = ycocg[0] + (ycocg[1] >> 1) + (ycocg[2] >> 1);
rgb[1] = ycocg[0] - (ycocg[2] >> 1);
@ -172,11 +194,15 @@ void nsc_ycocg_rgb(NSC_CONTEXT* context)
rgb[1] = ycocg[0] + (ycocg[2] >> 1);
rgb[2] = ycocg[0] - (ycocg[1] >> 1) - (ycocg[2] >> 1);
}
for(i = 0;i < 3;i++)
for(i = 0; i < 3; i++)
stream_write_uint8(context->org_buf[i], rgb[i]);
size--;
}while(size);
for(i = 0;i < 3;i++)
}
while(size);
for(i = 0; i < 3; i++)
context->org_buf[i]->p = context->org_buf[i]->data;
}
@ -185,10 +211,9 @@ void nsc_colorloss_recover(NSC_CONTEXT* context)
int i;
uint8 cllvl;
cllvl = context->nsc_stream->colorLossLevel;
for(i = 1;i < 3;i++)
{
for(i = 1; i < 3; i++)
nsc_cl_expand(context->org_buf[i], cllvl, context->OrgByteCount[i]);
}
}
void nsc_rle_decode(STREAM* in, STREAM* out, uint32 origsz)
@ -196,18 +221,21 @@ void nsc_rle_decode(STREAM* in, STREAM* out, uint32 origsz)
uint32 i;
uint8 value;
i = origsz;
while( i > 4 )
while (i > 4)
{
stream_read_uint8(in, value);
if( i == 5 )
if (i == 5)
{
stream_write_uint8(out,value);
i-=1;
}
else if( value == *(in->p) )
else if (value == *(in->p))
{
stream_seek(in, 1);
if( *(in->p) < 0xff )
if (*(in->p) < 0xFF)
{
uint8 len;
stream_read_uint8(in, len);
@ -229,25 +257,29 @@ void nsc_rle_decode(STREAM* in, STREAM* out, uint32 origsz)
i -= 1;
}
}
stream_copy(out, in, 4);
}
void nsc_rle_decompress_data(NSC_CONTEXT* context)
{
STREAM* rles;
uint16 i,origsize;
uint16 i, origsize;
rles = stream_new(0);
rles->p = rles->data = context->nsc_stream->pdata->p;
rles->size = context->nsc_stream->pdata->size;
for (i=0; i<4 ;i++)
for (i = 0; i < 4; i++)
{
origsize = context->OrgByteCount[i];
if( i==3 && context->nsc_stream->PlaneByteCount[i] == 0 )
if (i == 3 && context->nsc_stream->PlaneByteCount[i] == 0)
stream_set_byte(context->org_buf[i], 0xff, origsize);
else if(context->nsc_stream->PlaneByteCount[i] < origsize)
else if (context->nsc_stream->PlaneByteCount[i] < origsize)
nsc_rle_decode(rles, context->org_buf[i], origsize);
else
stream_copy(context->org_buf[i], rles, origsize);
context->org_buf[i]->p = context->org_buf[i]->data;
}
}
@ -257,7 +289,8 @@ void nsc_combine_argb(NSC_CONTEXT* context)
int i;
uint8* bmp;
bmp = context->bmpdata;
for(i = 0;i < (context->width * context->height);i++)
for (i = 0; i < (context->width * context->height); i++)
{
stream_read_uint8(context->org_buf[2], *bmp++);
stream_read_uint8(context->org_buf[1], *bmp++);
@ -269,24 +302,29 @@ void nsc_combine_argb(NSC_CONTEXT* context)
void nsc_stream_initialize(NSC_CONTEXT* context, STREAM* s)
{
int i;
for (i=0; i<4; i++)
stream_read_uint32(s, context->nsc_stream->PlaneByteCount[i]);
for (i = 0; i < 4; i++)
stream_read_uint32(s, context->nsc_stream->PlaneByteCount[i]);
stream_read_uint8(s, context->nsc_stream->colorLossLevel);
stream_read_uint8(s, context->nsc_stream->ChromaSubSamplingLevel);
stream_seek(s, 2);
context->nsc_stream->pdata = stream_new(0);
stream_attach(context->nsc_stream->pdata, s->p, BYTESUM(context->nsc_stream->PlaneByteCount));
}
void nsc_context_initialize(NSC_CONTEXT* context, STREAM* s)
{
uint32 tempsz;
int i;
uint32 tempsz;
nsc_stream_initialize(context, s);
context->bmpdata = xzalloc(context->width * context->height * 4);
for (i=0; i<4; i++)
for (i = 0; i < 4; i++)
context->OrgByteCount[i]=context->width * context->height;
if(context->nsc_stream->ChromaSubSamplingLevel > 0) /* [MS-RDPNSC] 2.2 */
if (context->nsc_stream->ChromaSubSamplingLevel > 0) /* [MS-RDPNSC] 2.2 */
{
uint32 tempWidth,tempHeight;
tempWidth = ROUND_UP_TO(context->width, 8);
@ -297,11 +335,13 @@ void nsc_context_initialize(NSC_CONTEXT* context, STREAM* s)
context->OrgByteCount[1] = tempWidth * tempHeight;
context->OrgByteCount[2] = tempWidth * tempHeight;
}
for (i=0 ; i<4; i++)
for (i = 0; i < 4; i++)
{
tempsz = context->OrgByteCount[i];
if (i == 1 || i == 2)
tempsz += (tempsz & 0x7) ? (tempsz >> 3) + 0x1 : (tempsz >> 3); /* extra bytes/8 bytes for bitstream to store the 9th bit after colorloss recover */
context->org_buf[i] = stream_new(tempsz);
}
}
@ -309,8 +349,10 @@ void nsc_context_initialize(NSC_CONTEXT* context, STREAM* s)
void nsc_context_destroy(NSC_CONTEXT* context)
{
int i;
for(i = 0;i < 4;i++)
for(i = 0;i < 4; i++)
stream_free(context->org_buf[i]);
stream_detach(context->nsc_stream->pdata);
xfree(context->bmpdata);
}