The height is a power of two of up to 16 rows. The current code was
optimised for large sample counts.
T-Head C908:
h264_weight2_8_c: 211.7 ( 1.00x)
h264_weight2_8_rvv_i32: before 184.0 ( 1.15x)
h264_weight2_8_rvv_i32: after 54.2 ( 3.90x)
h264_weight4_8_c: 285.7 ( 1.00x)
h264_weight4_8_rvv_i32: before 341.2 ( 0.86x)
h264_weight4_8_rvv_i32: after 82.2 ( 3.47x)
h264_weight8_8_c: 498.7 ( 1.00x)
h264_weight8_8_rvv_i32: before 683.7 ( 0.73x)
h264_weight8_8_rvv_i64: after 128.5 ( 3.95x)
h264_weight16_8_c: 878.2 ( 1.00x)
h264_weight16_8_rvv_i32: unchanged 239.5 ( 3.67x)
SpacemiT X60:
h264_weight2_8_c: 207.2 ( 1.00x)
h264_weight2_8_rvv_i32: before 259.6 ( 0.80x)
h264_weight2_8_rvv_i32: after 82.2 ( 2.52x)
h264_weight4_8_c: 290.8 ( 1.00x)
h264_weight4_8_rvv_i32: before 509.6 ( 0.57x)
h264_weight4_8_rvv_i32: after 61.5 ( 4.73x)
h264_weight8_8_c: 498.8 ( 1.00x)
h264_weight8_8_rvv_i32: before 1019.8 ( 0.49x)
h264_weight8_8_rvv_i64: after 71.8 ( 6.95x)
h264_weight16_8_c: 874.0 ( 1.00x)
h264_weight16_8_rvv_i32: unchanged 249.0 ( 3.51x)
Fixes: OOM and Timeout
Fixes: 71254/clusterfuzz-testcase-minimized-ffmpeg_SWR_fuzzer-5941896977907712
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: -1.80923e+19 is outside the range of representable values of type 'long'
Fixes: 71103/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SNOW_fuzzer-6542773681979392
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: shift exponent 62 is too large for 32-bit type 'int'
Fixes: 71020/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-6444916325023744
Fixes: 71285/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-4761971281428480
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: signed integer overflow: 1205469696 + 1901074655 cannot be represented in type 'int'
Fixes: 70773/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-5419594888577024
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: signed integer overflow: 856827136 + 2123580416 cannot be represented in type 'int'
Fixes: 70772/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PRORES_KS_fuzzer-5180569961431040
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: signed integer overflow: 1073750247 * 2 cannot be represented in type 'int'
Fixes: 70722/clusterfuzz-testcase-minimized-ffmpeg_dem_ASF_O_fuzzer-5447231587549184
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
We have no valid sample that triggers this so we do not know if this would decode
correctly, but -inf is not the correct k value
Fixes: Assertion n>=0 && n<=32 failed at libavcodec/get_bits.h:423
Fixes: -inf is outside the range of representable values of type 'int'
Fixes: 70709/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6223623839350784
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
While shifting "value" to left, we would iterate through all bits
of an unsigned long long, while we only expect to count through
"size * CHAR_BIT" bits; instead shift bits to the right and just
count the trailing zeros.
This fixes fate with MSVC.
Signed-off-by: Martin Storsjö <martin@martin.st>
Since c0666d8b, rgb24toyv12 is broken for width non-aligned to 16.
Add a simple wrapper to handle the non-aligned part.
Co-authored-by: johzzy <hellojinqiang@gmail.com>
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
Only those that can be decoded with our implementation, so excluding
* C and D - independent layers
* G, H, I - more than 2 layers
Frame hashes verified against the reference implementation from
https://hevc.hhi.fraunhofer.de/svn/svn_3DVCSoftware/
This extends the syntax for specifying input streams in -map and complex
filtergraph labels, to allow selecting a view by view ID, index, or
position. The corresponding decoder is then set up to decode the
appropriate view and send frames for that view to the correct
filtergraph input(s).
The HEVC decoder will start setting stereoscopic view position (left or
right) based on 3D Reference Displays Info SEI message in future
commits. This information should be merged with container-derived
stereo3D side data.
Only do it in reget_buffer().
The purpose of this clearing this flag is to prevent it for
unintentionally persisting across multiple invocations of this function
on one frame, however that is only a problem if the frame is not
unreffed between uses, which is only the case with reget_buffer().
In other cases the caller may legitimately want to set the discard flag
and should have the option of doing so.
The per-frame reference picture set contains two more lists -
INTER_LAYER[01]. Assuming at most two layers, INTER_LAYER1 is always
empty, but is added anyway for completeness.
When inter-layer prediction is enabled, INTER_LAYER0 for the
second-layer frame will contain the base-layer frame from the same
access unit, if it exists.
The new lists are then used in per-slice reference picture set
construction as per F.8.3.4 "Decoding process for reference picture
lists construction".
Rémi Denis-Courmont
sunyuechi
Anton Khirnov
Michael Niedermayer
Martin Storsjö
Zhao Zhili
James Almer
Niklas Haas