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Code Issues Releases Activity

h264: Allow discarding the cropping information from SPS

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Some 3D systems overload the meaning of the field for other purposes.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Vittorio Giovara 2013-01-23 12:26:59 +01:00 committed by Luca Barbato
parent 33552a5f7b
commit a84fb6e06f
4 changed files with 18 additions and 1 deletions
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2
libavcodec/avcodec.h
View File

@ -657,6 +657,8 @@ typedef struct RcOverride{
#define CODEC_FLAG2_FAST 0x00000001 ///< Allow non spec compliant speedup tricks.
#define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< Skip bitstream encoding.
#define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< Place global headers at every keyframe instead of in extradata.
#define CODEC_FLAG2_IGNORE_CROP 0x00010000 ///< Discard cropping information from SPS.
#if FF_API_MPV_GLOBAL_OPTS
#define CODEC_FLAG_CBP_RD 0x04000000 ///< Use rate distortion optimization for cbp.
#define CODEC_FLAG_QP_RD 0x08000000 ///< Use rate distortion optimization for qp selectioon.

14
libavcodec/h264_ps.c
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@ -425,6 +425,20 @@ int ff_h264_decode_seq_parameter_set(H264Context *h){
sps->crop_right = get_ue_golomb(&s->gb);
sps->crop_top = get_ue_golomb(&s->gb);
sps->crop_bottom= get_ue_golomb(&s->gb);
if (h->s.avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {
av_log(h->s.avctx, AV_LOG_DEBUG,
"discarding sps cropping, "
"original values are l:%u r:%u t:%u b:%u\n",
sps->crop_left,
sps->crop_right,
sps->crop_top,
sps->crop_bottom);
sps->crop_left =
sps->crop_right =
sps->crop_top =
sps->crop_bottom = 0;
}
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");
}

1
libavcodec/options_table.h
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@ -76,6 +76,7 @@ static const AVOption options[]={
{"sgop", "Deprecated, use mpegvideo private options instead", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_STRICT_GOP }, INT_MIN, INT_MAX, V|E, "flags2"},
#endif
{"noout", "skip bitstream encoding", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_NO_OUTPUT }, INT_MIN, INT_MAX, V|E, "flags2"},
{"ignorecrop", "ignore cropping information from sps", 1, AV_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_IGNORE_CROP }, INT_MIN, INT_MAX, V|D, "flags2"},
{"local_header", "place global headers at every keyframe instead of in extradata", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_LOCAL_HEADER }, INT_MIN, INT_MAX, V|E, "flags2"},
#if FF_API_SUB_ID
{"sub_id", NULL, OFFSET(sub_id), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},

2
libavcodec/version.h
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@ -27,7 +27,7 @@
*/
#define LIBAVCODEC_VERSION_MAJOR 54
#define LIBAVCODEC_VERSION_MINOR 40
#define LIBAVCODEC_VERSION_MINOR 41
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \