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Code Issues Releases Activity

Replace second (and wrong) call to avcodec_align_dimensions() by adjusting

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stride_align. This is not particularly pretty and I will gladly implement
something else if someone has an idea!

Originally committed as revision 15466 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-09-30 01:07:25 +00:00
parent 8c07cee91a
commit 503bc4026d
1 changed files with 15 additions and 4 deletions
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19
libavcodec/utils.c
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@ -229,6 +229,7 @@ int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
int size[4] = {0};
int tmpsize;
AVPicture picture;
int stride_align[4];
avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
@ -238,12 +239,22 @@ int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
w+= EDGE_WIDTH*2;
h+= EDGE_WIDTH*2;
}
avcodec_align_dimensions(s, &w, &h);
ff_fill_linesize(&picture, s->pix_fmt, w);
for (i=0; i<4; i++)
picture.linesize[i] = ALIGN(picture.linesize[i], STRIDE_ALIGN);
for (i=0; i<4; i++){
//STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
//we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
//picture size unneccessarily in some cases. The solution here is not
//pretty and better ideas are welcome!
#ifdef HAVE_MMX
if(s->codec_id == CODEC_ID_SVQ1)
stride_align[i]= 16;
else
#endif
stride_align[i] = STRIDE_ALIGN;
picture.linesize[i] = ALIGN(picture.linesize[i], stride_align[i]);
}
tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h);
@ -269,7 +280,7 @@ int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
if((s->flags&CODEC_FLAG_EMU_EDGE) || (s->pix_fmt == PIX_FMT_PAL8) || !size[2])
buf->data[i] = buf->base[i];
else
buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
}
buf->width = s->width;
buf->height = s->height;