opensource/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-08-06 15:49:50 +08:00
Code Issues Packages Projects Releases Wiki Activity

swscale: split chroma buffers into separate U/V planes.

Browse Source 
Preparatory step to implement support for sizes > VOFW.
This commit is contained in:
Ronald S. Bultje
2011-05-25 14:30:09 -04:00
parent 69645c021a
commit b4a224c5e4
5 changed files with 359 additions and 265 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
libswscale/utils.c
View File

@ -989,7 +989,8 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter)
// allocate pixbufs (we use dynamic allocation because otherwise we would need to
// allocate several megabytes to handle all possible cases)
FF_ALLOC_OR_GOTO(c, c->lumPixBuf, c->vLumBufSize*2*sizeof(int16_t*), fail);
FF_ALLOC_OR_GOTO(c, c->chrPixBuf, c->vChrBufSize*2*sizeof(int16_t*), fail);
FF_ALLOC_OR_GOTO(c, c->chrUPixBuf, c->vChrBufSize*2*sizeof(int16_t*), fail);
FF_ALLOC_OR_GOTO(c, c->chrVPixBuf, c->vChrBufSize*2*sizeof(int16_t*), fail);
if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat))
FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf, c->vLumBufSize*2*sizeof(int16_t*), fail);
//Note we need at least one pixel more at the end because of the MMX code (just in case someone wanna replace the 4000/8000)
@ -998,9 +999,11 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter)
FF_ALLOCZ_OR_GOTO(c, c->lumPixBuf[i+c->vLumBufSize], VOF+1, fail);
c->lumPixBuf[i] = c->lumPixBuf[i+c->vLumBufSize];
}
c->uv_off = VOFW;
for (i=0; i<c->vChrBufSize; i++) {
FF_ALLOC_OR_GOTO(c, c->chrPixBuf[i+c->vChrBufSize], (VOF+1)*2, fail);
c->chrPixBuf[i] = c->chrPixBuf[i+c->vChrBufSize];
FF_ALLOC_OR_GOTO(c, c->chrUPixBuf[i+c->vChrBufSize], VOF*2+1, fail);
c->chrUPixBuf[i] = c->chrUPixBuf[i+c->vChrBufSize];
c->chrVPixBuf[i] = c->chrVPixBuf[i+c->vChrBufSize] = c->chrUPixBuf[i] + VOFW;
}
if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf)
for (i=0; i<c->vLumBufSize; i++) {
@ -1009,7 +1012,8 @@ int sws_init_context(SwsContext *c, SwsFilter *srcFilter, SwsFilter *dstFilter)
}
//try to avoid drawing green stuff between the right end and the stride end
for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);
for (i=0; i<c->vChrBufSize; i++)
memset(c->chrUPixBuf[i], 64, VOF*2+1);
assert(2*VOFW == VOF);
@ -1462,10 +1466,11 @@ void sws_freeContext(SwsContext *c)
av_freep(&c->lumPixBuf);
}
if (c->chrPixBuf) {
if (c->chrUPixBuf) {
for (i=0; i<c->vChrBufSize; i++)
av_freep(&c->chrPixBuf[i]);
av_freep(&c->chrPixBuf);
av_freep(&c->chrUPixBuf[i]);
av_freep(&c->chrUPixBuf);
av_freep(&c->chrVPixBuf);
}
if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {