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decoder: h264: skip SPS extension and auxiliary slice NALs.

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When NAL units of type 13 (SPS extension) or type 19 (auxiliary slice)
are present in a video, decoders shall perform the (optional) decoding
process specified for these NAL units or shall ignore them (7.4.1).

Implement option 2 (skip) for now, as alpha composition is not
supported yet during the decoding process.

This fixes decoding of the primary coded video in alphaconformanceG.

https://bugzilla.gnome.org/show_bug.cgi?id=703928
https://bugzilla.gnome.org/show_bug.cgi?id=728869
https://bugzilla.gnome.org/show_bug.cgi?id=724518

[skip NAL units earlier, i.e. at parsing time]
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
This commit is contained in:
Zhong Cong 2013-06-04 15:01:46 +08:00 committed by Gwenole Beauchesne
parent 3f14745d61
commit 3a6f6f97ab
2 changed files with 6 additions and 1 deletions
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2
ext/codecparsers

@ -1 +1 @@
Subproject commit a454f860186efe61c874cc938aecd7818d2935d1
Subproject commit 7eb3458a1629bf9d959b0957ffe4363a258fe86f

5
gst-libs/gst/vaapi/gstvaapidecoder_h264.c
View file

@ -3166,6 +3166,11 @@ gst_vaapi_decoder_h264_parse(GstVaapiDecoder *base_decoder,
flags |= GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START;
gst_vaapi_parser_info_h264_replace(&priv->prev_slice_pi, pi);
break;
case GST_H264_NAL_SPS_EXT:
case GST_H264_NAL_SLICE_AUX:
/* skip SPS extension and auxiliary slice for now */
flags |= GST_VAAPI_DECODER_UNIT_FLAG_SKIP;
break;
default:
if (pi->nalu.type >= 14 && pi->nalu.type <= 18)
flags |= GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START;