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H.264 decode: support cropping up to 28 pixels in interlaced mode.

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Contrary to progressive, just being able to crop up to 14/15 pixels
is not enough to encode all supported resolutions, and the new
behaviour is also consistent with e.g. MPEG-2 etc.

Originally committed as revision 25669 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2010-11-03 20:52:28 +00:00
parent ba7d6e798e
commit 00d1e96bf4
4 changed files with 4 additions and 4 deletions
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2
libavcodec/h264.c
View File

@ -1810,7 +1810,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
if(h->sps.frame_mbs_only_flag)
s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
else
s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 7);
if (s->context_initialized
&& ( s->width != s->avctx->width || s->height != s->avctx->height

2
libavcodec/h264_ps.c
View File

@ -373,7 +373,7 @@ int ff_h264_decode_seq_parameter_set(H264Context *h){
if(sps->crop_left || sps->crop_top){
av_log(h->s.avctx, AV_LOG_ERROR, "insane cropping not completely supported, this could look slightly wrong ...\n");
}
if(sps->crop_right >= 8 || sps->crop_bottom >= (8>> !sps->frame_mbs_only_flag)){
if(sps->crop_right >= 8 || sps->crop_bottom >= 8){
av_log(h->s.avctx, AV_LOG_ERROR, "brainfart cropping not supported, this could look slightly wrong ...\n");
}
}else{

2
libavcodec/mpegvideo.c
View File

@ -498,7 +498,7 @@ av_cold int MPV_common_init(MpegEncContext *s)
if(s->codec_id == CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
s->mb_height = (s->height + 31) / 32 * 2;
else
else if (s->codec_id != CODEC_ID_H264)
s->mb_height = (s->height + 15) / 16;
if(s->avctx->pix_fmt == PIX_FMT_NONE){

2
libavcodec/utils.c
View File

@ -140,7 +140,7 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int l
case PIX_FMT_YUVA420P:
w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
h_align= 16;
if(s->codec_id == CODEC_ID_MPEG2VIDEO || s->codec_id == CODEC_ID_MJPEG || s->codec_id == CODEC_ID_AMV || s->codec_id == CODEC_ID_THP)
if(s->codec_id == CODEC_ID_MPEG2VIDEO || s->codec_id == CODEC_ID_MJPEG || s->codec_id == CODEC_ID_AMV || s->codec_id == CODEC_ID_THP || s->codec_id == CODEC_ID_H264)
h_align= 32; // interlaced is rounded up to 2 MBs
break;
case PIX_FMT_YUV411P: