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Set avctx->coded_width/height to uncropped h264 sizes

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avctx->width/height remain right/bottom cropped as previous behaviour.

Hardware decoders need to know the uncropped data to allocate surfaces
of correct height. Some hardware is picky and fails to decoder properly
if a surface larger than needed is used during decode, so just aligning
up is not enough.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Joakim Plate 2011-11-06 00:59:37 +01:00 committed by Michael Niedermayer
parent 1125571b73
commit 29a29226bb
1 changed files with 4 additions and 6 deletions
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10
libavcodec/h264.c
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@ -2700,11 +2700,8 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
s->chroma_y_shift = h->sps.chroma_format_idc <= 1; // 400 uses yuv420p
s->width = 16*s->mb_width - (2>>CHROMA444)*FFMIN(h->sps.crop_right, (8<<CHROMA444)-1);
if(h->sps.frame_mbs_only_flag)
s->height= 16*s->mb_height - (1<<s->chroma_y_shift)*FFMIN(h->sps.crop_bottom, (16>>s->chroma_y_shift)-1);
else
s->height= 16*s->mb_height - (2<<s->chroma_y_shift)*FFMIN(h->sps.crop_bottom, (16>>s->chroma_y_shift)-1);
s->width = 16*s->mb_width;
s->height= 16*s->mb_height;
if (s->context_initialized
&& ( s->width != s->avctx->coded_width || s->height != s->avctx->coded_height
@ -2725,8 +2722,9 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
av_log(h->s.avctx, AV_LOG_ERROR, "Cannot (re-)initialize context during parallel decoding.\n");
return -1;
}
avcodec_set_dimensions(s->avctx, s->width, s->height);
s->avctx->width -= (2>>CHROMA444)*FFMIN(h->sps.crop_right, (8<<CHROMA444)-1);
s->avctx->height -= (1<<s->chroma_y_shift)*FFMIN(h->sps.crop_bottom, (16>>s->chroma_y_shift)-1) * (2 - h->sps.frame_mbs_only_flag);
s->avctx->sample_aspect_ratio= h->sps.sar;
av_assert0(s->avctx->sample_aspect_ratio.den);