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8239ff343f
In case a set of NALs with emulation_prevention_three_byte is decoded using
hardware decoder like Hantro G1, wrong struct v4l2_ctrl_h264_decode_params
.dec_ref_pic_marking_bit_size is passed into the kernel, which results in
decoding artifacts. Subtract the number of emulation three bytes from the
.dec_ref_pic_m->bit_size to get the correct bit size and avoid having these
artifacts. Apply the exact same fix to slice->pic_order_cnt_bit_size as well.
The following NALs (7, 8, 6, 5) decode with artifacts,
.dec_ref_pic_marking_bit_size is set to 10 without this patch.
00000000 00 00 00 01 27 4d 00 20 89 8b 60 3c 04 bf 2e 02 |....'M. ..`<....|
00000010 d4 18 04 18 c0 c0 01 77 00 00 5d c1 7b df 05 00 |.......w..].{...|
00000020 00 00 01 28 ee 1f 20 00 00 01 06 05 10 b9 ed b9 |...(.. .........|
00000030 30 5d 21 4b 71 83 71 2c 10 a3 14 bb 29 80 00 00 |0]!Kq.q,....)...|
00000040 01 25 b8 00 05 00 00 03 03 7f fa 78 1e e7 fd fe |.%.........x....|
^^^^^^^^^^^^--- emulation 3 byte
00000050 b4 62 7a 31 ff 7d 81 fd 26 d8 62 b6 d6 25 46 ae |.bz1.}..&.b..%F.|
The following NALs (7, 8, 6, 5) decode fine,
.dec_ref_pic_marking_bit_size is set to 2 without this patch.
00000000 00 00 00 01 27 4d 00 20 89 8b 60 3c 04 bf 2e 02 |....'M. ..`<....|
00000010 d4 18 04 18 c0 c0 01 77 00 00 5d c1 7b df 05 00 |.......w..].{...|
00000020 00 00 01 28 ee 1f 20 00 00 01 06 05 10 b9 ed b9 |...(.. .........|
00000030 30 5d 21 4b 71 83 71 2c 10 a3 14 bb 29 80 00 00 |0]!Kq.q,....)...|
00000040 01 25 b8 00 04 c0 00 03 7f fa 78 1e e7 fd fe b4 |.%........x.....|
00000050 62 7a 31 ff 7d 81 fd 26 d8 62 b6 d6 25 46 ae ce |bz1.}..&.b..%F..|
Fixes:
|
||
|---|---|---|
| .. | ||
| codecparsers-prelude.h | ||
| dboolhuff.AUTHORS | ||
| dboolhuff.c | ||
| dboolhuff.h | ||
| dboolhuff.LICENSE | ||
| dboolhuff.PATENTS | ||
| gstav1parser.c | ||
| gstav1parser.h | ||
| gsth264parser.c | ||
| gsth264parser.h | ||
| gsth265parser.c | ||
| gsth265parser.h | ||
| gstjpeg2000sampling.c | ||
| gstjpeg2000sampling.h | ||
| gstjpegparser.c | ||
| gstjpegparser.h | ||
| gstmpeg4parser.c | ||
| gstmpeg4parser.h | ||
| gstmpegvideometa.c | ||
| gstmpegvideometa.h | ||
| gstmpegvideoparser.c | ||
| gstmpegvideoparser.h | ||
| gstvc1parser.c | ||
| gstvc1parser.h | ||
| gstvp8parser.c | ||
| gstvp8parser.h | ||
| gstvp8rangedecoder.c | ||
| gstvp8rangedecoder.h | ||
| gstvp9parser.c | ||
| gstvp9parser.h | ||
| meson.build | ||
| nalutils.c | ||
| nalutils.h | ||
| parserutils.c | ||
| parserutils.h | ||
| vp8utils.c | ||
| vp8utils.h | ||
| vp9utils.c | ||
| vp9utils.h | ||