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Author SHA1 Message Date
softworkz
bb3a14489e fftools/tf_internal: Use av_default_item_name 
Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: softworkz <softworkz@hotmail.com>
 2025-05-15 23:04:44 +02:00
softworkz
cee7b8a051 fftools/textformat: Introduce common header and deduplicate code 
Also change writer_printf signature in AVTextWriter to use va_list,
so that it can be called by the new function writer_printf()
in tf_internal.h.

Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: softworkz <softworkz@hotmail.com>
 2025-05-15 23:04:44 +02:00
softworkz
e4830b8c5e fftools/textformat: Introduce AVTextFormatOptions for avtext_context_open() 
This allows future addition of options without
changes to the signature of avtext_context_open().

Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: softworkz <softworkz@hotmail.com>
 2025-05-15 23:04:44 +02:00
softworkz
4ff90f05c7 fftools/avtextformat: Re-use BPrint in loop 
Instead of initializing a new BPrint in case of UTF decode error,
re-use the same BPrint struct and just clear it
for each iteration.

Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: softworkz <softworkz@hotmail.com>
 2025-05-15 23:04:44 +02:00
softworkz
d225928703 fftools/textformat: Rename name param to key for API consistency 
Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: softworkz <softworkz@hotmail.com>
 2025-05-15 23:04:44 +02:00
softworkz
4baeb9ffe9 fftools/textformat: Remove unused print_rational() pointer from AVTextFormatter 
Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: softworkz <softworkz@hotmail.com>
 2025-05-15 23:04:44 +02:00
softworkz
5f90eea8a8 fftools/textformat: Apply quality improvements 
Perform multiple improvements to increase code robustness.
In particular:
- favor unsigned counters for loops
- add missing checks
- avoid possible leaks
- move variable declarations to inner scopes when feasible
- provide explicit type-casting when needed

Signed-off-by: softworkz <softworkz@hotmail.com>
 2025-05-15 23:04:44 +02:00
softworkz
8f42d90413 fftools/textformat: Apply formatting and whitespace changes 
Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: softworkz <softworkz@hotmail.com>
 2025-05-15 23:04:44 +02:00
Michael Niedermayer
f51c385a8e tools/merge-all-source-plugins: Check that there are no uncommited changes 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 16:19:59 +02:00
Michael Niedermayer
a06b86a09b tools/merge-all-source-plugins: Try merging a tag or branch matching the current version 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 16:19:58 +02:00
Michael Niedermayer
12b853530a Add tools/merge-all-source-plugins 
Simple script to merge all source plugins.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 12:17:04 +02:00
Michael Niedermayer
23592f942d swscale/output: fix integer overflow in yuv2rgba64_full_1_c_template() 
Fixes: signed integer overflow: -293650 * 16525 cannot be represented in type 'int'
Fixes: 408304111/clusterfuzz-testcase-minimized-ffmpeg_SWS_fuzzer-4762210299871232

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:58 +02:00
Michael Niedermayer
05f8c8c4c2 avformat/matroskadec: check that channels fit in signed 32bit int 
Fixes: signed integer overflow: -1384566925600903168 * 16 cannot be represented in type 'long'
Fixes: 407069502/clusterfuzz-testcase-minimized-ffmpeg_dem_WEBM_DASH_MANIFEST_fuzzer-5159255372267520

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:57 +02:00
Michael Niedermayer
8e6db875af avcodec/takdec: Check remaining space for first predictors 
Fixes: Timeout
Fixes: 403673829/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TAK_fuzzer-5498240154009600

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:57 +02:00
Michael Niedermayer
4a9d907b5e avcodec/4xm: Check frame_4cc before allocation 
Fixes: Timeout
Fixes: 403402798/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FOURXM_fuzzer-5012819292782592

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:57 +02:00
Michael Niedermayer
8168ebdcc5 tools/target_dec_fuzzer: Adjust threshold for WEBP 
Fixes: Timeout
Fixes: 403345121/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WEBP_fuzzer-6408323910139904

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:56 +02:00
Michael Niedermayer
c06f5b3ab9 avcodec/svq3: Check there are bits left before decompression 
Fixes: out of array read
Fixes: 402587670/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SVQ3_fuzzer-6343867775647744

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:56 +02:00
Michael Niedermayer
fd0a792766 avcodec/sonic: Check num_taps 
The encoder uses max 128 taps, which is quiet a lot already
If work is done to improve sonic, it will be more radical than changing the taps

Fixes: Timeout
Fixes: 402539974/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SONIC_fuzzer-6122944271286272

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:56 +02:00
Michael Niedermayer
d28bec8c4d avformat/imf_cpl: fix indention after previous commit 2025-05-15 03:03:55 +02:00
Michael Niedermayer
39800d78b0 avformat/imf_cpl: do not continue looping forever 
Fixes: infinite loop
Fixes: 401658595/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5756875014733824
Regression since: 61fa1e14e4

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:55 +02:00
Michael Niedermayer
9fc2702f6f avformat/mov: reject negative ELST durations 
Fixes: multiple integer overflows
Fixes: 401016767/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-6242067591790592

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:55 +02:00
Michael Niedermayer
76e29bb8bf avcodec/dnxuc_parser: Use ff_parse_close() 
Fixes: buffer leak
Fixes: 398894512/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-6716597473705984

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:54 +02:00
Michael Niedermayer
6a47046981 avformat/avidec: Ignore duplicate GAB2 
Fixes: memleak
Fixes: 398401912/clusterfuzz-testcase-minimized-ffmpeg_dem_AVI_fuzzer-4669849976766464

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:54 +02:00
Michael Niedermayer
1a5ed492e5 MAINTAINERS: Add entry for samples-request 
This is based on discussion with the GA and its simply the people
who have done or tried to do some uploads recently.

Everyone who has a shell account on ffmpeg.org should have powers to
upload samples.

CC: compn <compn@ffmpeg.org>
CC: Thilo Borgmann <thilo.borgmann@mail.de>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:54 +02:00
Romain Beauxis
a9d39d6eb9 libavformat/oggdec.{c, h}: Implement packet skip on packet return value of 1 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:53 +02:00
Romain Beauxis
6d54af6599 libavformat/oggdec.h: Document packet function return value. 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-15 03:03:53 +02:00
Andreas Rheinhardt
0d7172a9ff avcodec/cbs: Avoid branch 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2025-05-15 01:51:34 +02:00
Andreas Rheinhardt
f71d0f0559 avcodec/apv_parser: Mark close as av_cold 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2025-05-15 01:51:34 +02:00
Andreas Rheinhardt
d794ecd9d2 avcodec/vulkan_encode_hevc: Fix memleak on error 
Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2025-05-15 01:51:28 +02:00
Andreas Rheinhardt
70fa44dfa8 avcodec/vulkan_encode_h264: Fix memleak on error 
Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2025-05-15 01:26:07 +02:00
Andreas Rheinhardt
b18aaf209f fftools/ffmpeg_dec: Always receive frames from decoder 
Up until now if avcodec_send_packet() returned an error,
no attempt to receive a frame from the decoder would be made.
Instead the decoder was presumed to be drained, so that more
packets could be sent to it. Yet this need not be so:
It can happen that a packet would decode to multiple frames
and that decoding the first of these (the one that is decoded
during the avcodec_send_packet() call) returns an error,
in which case the decoder is not yet ready to receive more
input as the remaining parts of the packet have not been decoded
yet. In this case, an AERROR_BUG is triggered.

This happens in ticket #11553 with VP9 (which uses a BSF
to split VP9 superframes and is therefore affected by this).

Fix this by always calling avcodec_receive_frame() unless
xerror is set.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2025-05-15 01:23:41 +02:00
Andreas Rheinhardt
8588770367 avformat/av1dec: Avoid branch for setting position 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2025-05-15 01:20:46 +02:00
Andreas Rheinhardt
c914fd2977 avformat/av1dec: Remove redundant avio_tell() 
AV1DemuxContext.temporal_unit_size is zero after reading the header,
so the position set when reading the header will not be used at all.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2025-05-15 01:20:46 +02:00
Timo Rothenpieler
889e7f2c5c compat/cuda: add device side printf function 2025-05-14 22:08:33 +02:00
James Almer
3f94201324 avformat/iamf_parse: increase PutBytes buffer when writing AAC extradata 
We may write up to 43 bits, so 5 bytes is not enough.

Fixes: Assertion n>=0 && n<=32 failed at ./libavcodec/get_bits.h:406
Fixes: 398527871/clusterfuzz-testcase-minimized-ffmpeg_dem_IAMF_fuzzer-6602025714647040

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: James Almer <jamrial@gmail.com>
 2025-05-14 10:32:23 -03:00
Nuo Mi
3004835850 checkasm: hevc sao, use checkasm_check_padded 2025-05-14 20:55:39 +08:00
Nuo Mi
5150d26e0a checkasm: hevc sao_edge, benchmarking inside the width loop is meaningless 2025-05-14 20:55:39 +08:00
Shaun Loo
45bea45c7b checkasm: add vvc_sao 
This is a part of Google Summer of Code 2023

AVX2:
 - vvc_sao.sao_band [OK]
 - vvc_sao.sao_edge [OK]
checkasm: all 54 tests passed
vvc_sao_band_8_8_c:                                    157.4 ( 1.00x)
vvc_sao_band_8_8_avx2:                                  30.7 ( 5.12x)
vvc_sao_band_8_10_c:                                   119.4 ( 1.00x)
vvc_sao_band_8_10_avx2:                                 29.2 ( 4.09x)
vvc_sao_band_8_12_c:                                   144.6 ( 1.00x)
vvc_sao_band_8_12_avx2:                                 30.0 ( 4.82x)
vvc_sao_band_16_8_c:                                   446.5 ( 1.00x)
vvc_sao_band_16_8_avx2:                                103.3 ( 4.32x)
vvc_sao_band_16_10_c:                                  399.2 ( 1.00x)
vvc_sao_band_16_10_avx2:                                64.3 ( 6.21x)
vvc_sao_band_16_12_c:                                  472.9 ( 1.00x)
vvc_sao_band_16_12_avx2:                                56.5 ( 8.37x)
vvc_sao_band_32_8_c:                                  2430.9 ( 1.00x)
vvc_sao_band_32_8_avx2:                                203.3 (11.96x)
vvc_sao_band_32_10_c:                                 1405.7 ( 1.00x)
vvc_sao_band_32_10_avx2:                               208.5 ( 6.74x)
vvc_sao_band_32_12_c:                                 2054.3 ( 1.00x)
vvc_sao_band_32_12_avx2:                               213.0 ( 9.64x)
vvc_sao_band_48_8_c:                                  3835.4 ( 1.00x)
vvc_sao_band_48_8_avx2:                                604.2 ( 6.35x)
vvc_sao_band_48_10_c:                                 3624.6 ( 1.00x)
vvc_sao_band_48_10_avx2:                               468.8 ( 7.73x)
vvc_sao_band_48_12_c:                                 3752.4 ( 1.00x)
vvc_sao_band_48_12_avx2:                               477.5 ( 7.86x)
vvc_sao_band_64_8_c:                                  6061.1 ( 1.00x)
vvc_sao_band_64_8_avx2:                                803.9 ( 7.54x)
vvc_sao_band_64_10_c:                                 6142.5 ( 1.00x)
vvc_sao_band_64_10_avx2:                               827.3 ( 7.43x)
vvc_sao_band_64_12_c:                                 6106.6 ( 1.00x)
vvc_sao_band_64_12_avx2:                               839.9 ( 7.27x)
vvc_sao_band_80_8_c:                                  9478.0 ( 1.00x)
vvc_sao_band_80_8_avx2:                               1516.7 ( 6.25x)
vvc_sao_band_80_10_c:                                10300.5 ( 1.00x)
vvc_sao_band_80_10_avx2:                              1298.7 ( 7.93x)
vvc_sao_band_80_12_c:                                 8941.1 ( 1.00x)
vvc_sao_band_80_12_avx2:                              1315.3 ( 6.80x)
vvc_sao_band_96_8_c:                                 13351.5 ( 1.00x)
vvc_sao_band_96_8_avx2:                               1815.4 ( 7.35x)
vvc_sao_band_96_10_c:                                13197.5 ( 1.00x)
vvc_sao_band_96_10_avx2:                              1872.4 ( 7.05x)
vvc_sao_band_96_12_c:                                11969.0 ( 1.00x)
vvc_sao_band_96_12_avx2:                              1895.8 ( 6.31x)
vvc_sao_band_112_8_c:                                19936.9 ( 1.00x)
vvc_sao_band_112_8_avx2:                              2802.3 ( 7.11x)
vvc_sao_band_112_10_c:                               19534.9 ( 1.00x)
vvc_sao_band_112_10_avx2:                             2635.0 ( 7.41x)
vvc_sao_band_112_12_c:                               16520.6 ( 1.00x)
vvc_sao_band_112_12_avx2:                             2591.8 ( 6.37x)
vvc_sao_band_128_8_c:                                25967.5 ( 1.00x)
vvc_sao_band_128_8_avx2:                              3155.3 ( 8.23x)
vvc_sao_band_128_10_c:                               24002.6 ( 1.00x)
vvc_sao_band_128_10_avx2:                             3374.6 ( 7.11x)
vvc_sao_band_128_12_c:                               20829.4 ( 1.00x)
vvc_sao_band_128_12_avx2:                             3377.0 ( 6.17x)
vvc_sao_edge_8_8_c:                                    174.6 ( 1.00x)
vvc_sao_edge_8_8_avx2:                                  37.0 ( 4.72x)
vvc_sao_edge_8_10_c:                                   174.4 ( 1.00x)
vvc_sao_edge_8_10_avx2:                                 58.5 ( 2.98x)
vvc_sao_edge_8_12_c:                                   171.1 ( 1.00x)
vvc_sao_edge_8_12_avx2:                                 58.5 ( 2.93x)
vvc_sao_edge_16_8_c:                                   677.7 ( 1.00x)
vvc_sao_edge_16_8_avx2:                                 72.2 ( 9.39x)
vvc_sao_edge_16_10_c:                                  724.8 ( 1.00x)
vvc_sao_edge_16_10_avx2:                               106.4 ( 6.81x)
vvc_sao_edge_16_12_c:                                  647.0 ( 1.00x)
vvc_sao_edge_16_12_avx2:                               106.6 ( 6.07x)
vvc_sao_edge_32_8_c:                                  3001.8 ( 1.00x)
vvc_sao_edge_32_8_avx2:                                157.6 (19.04x)
vvc_sao_edge_32_10_c:                                 3071.1 ( 1.00x)
vvc_sao_edge_32_10_avx2:                               404.2 ( 7.60x)
vvc_sao_edge_32_12_c:                                 2698.6 ( 1.00x)
vvc_sao_edge_32_12_avx2:                               398.8 ( 6.77x)
vvc_sao_edge_48_8_c:                                  6557.7 ( 1.00x)
vvc_sao_edge_48_8_avx2:                                380.1 (17.25x)
vvc_sao_edge_48_10_c:                                 6319.9 ( 1.00x)
vvc_sao_edge_48_10_avx2:                               896.3 ( 7.05x)
vvc_sao_edge_48_12_c:                                 6306.4 ( 1.00x)
vvc_sao_edge_48_12_avx2:                               885.5 ( 7.12x)
vvc_sao_edge_64_8_c:                                 11510.7 ( 1.00x)
vvc_sao_edge_64_8_avx2:                                504.1 (22.84x)
vvc_sao_edge_64_10_c:                                10917.4 ( 1.00x)
vvc_sao_edge_64_10_avx2:                              1608.3 ( 6.79x)
vvc_sao_edge_64_12_c:                                11499.8 ( 1.00x)
vvc_sao_edge_64_12_avx2:                              1586.4 ( 7.25x)
vvc_sao_edge_80_8_c:                                 18193.2 ( 1.00x)
vvc_sao_edge_80_8_avx2:                                930.2 (19.56x)
vvc_sao_edge_80_10_c:                                17984.3 ( 1.00x)
vvc_sao_edge_80_10_avx2:                              2420.9 ( 7.43x)
vvc_sao_edge_80_12_c:                                18289.4 ( 1.00x)
vvc_sao_edge_80_12_avx2:                              2412.1 ( 7.58x)
vvc_sao_edge_96_8_c:                                 26361.8 ( 1.00x)
vvc_sao_edge_96_8_avx2:                               1118.4 (23.57x)
vvc_sao_edge_96_10_c:                                26162.2 ( 1.00x)
vvc_sao_edge_96_10_avx2:                              3666.9 ( 7.13x)
vvc_sao_edge_96_12_c:                                25926.6 ( 1.00x)
vvc_sao_edge_96_12_avx2:                              3433.9 ( 7.55x)
vvc_sao_edge_112_8_c:                                36562.9 ( 1.00x)
vvc_sao_edge_112_8_avx2:                              1741.0 (21.00x)
vvc_sao_edge_112_10_c:                               38126.4 ( 1.00x)
vvc_sao_edge_112_10_avx2:                             5153.3 ( 7.40x)
vvc_sao_edge_112_12_c:                               36345.7 ( 1.00x)
vvc_sao_edge_112_12_avx2:                             4684.9 ( 7.76x)
vvc_sao_edge_128_8_c:                                46379.8 ( 1.00x)
vvc_sao_edge_128_8_avx2:                              2012.4 (23.05x)
vvc_sao_edge_128_10_c:                               47029.5 ( 1.00x)
vvc_sao_edge_128_10_avx2:                             6162.2 ( 7.63x)
vvc_sao_edge_128_12_c:                               49647.3 ( 1.00x)
vvc_sao_edge_128_12_avx2:                             6127.1 ( 8.10x)

Co-authored-by: Nuo Mi <nuomi2021@gmail.com>
 2025-05-14 20:55:39 +08:00
Shaun Loo
bed1769957 x86/vvcdec: sao, add avx2 support 
This is a part of Google Summer of Code 2023

Co-authored-by: Nuo Mi <nuomi2021@gmail.com>
 2025-05-14 20:55:39 +08:00
Shaun Loo
69f63c6210 x86/hevcdec: refact, remove duplicate code in HEVC_SAO_{BAND, EDGE}_FILTER 
This is a part of Google Summer of Code 2023

Co-authored-by: Nuo Mi <nuomi2021@gmail.com>
 2025-05-14 20:55:39 +08:00
Shaun Loo
dbd859a186 x86/hevcdec: sao, refact out h26x macros 
This is a part of Google Summer of Code 2023

Co-authored-by: Nuo Mi <nuomi2021@gmail.com>
 2025-05-14 20:55:39 +08:00
Nuo Mi
62f3d7e027 x86/vvcdec: misc, reordered functions in dsp_init for improved readability 2025-05-14 20:55:39 +08:00
James Almer
038314bc6b avcodec/exr: reindent after the previous change 
Signed-off-by: James Almer <jamrial@gmail.com>
 2025-05-14 00:17:02 -03:00
Mark Thompson
527d5eaec7 apv_decode: Discard invalid run codes earlier 
Caught by ubsan - would cause an invalid shift in constructing the
run value.
 2025-05-13 20:52:35 +01:00
Mark Thompson
1753d41d4e fate: Add test for APV 400-10 profile 
Same setup as the 422-10 profile test, using the same content.  FFmpeg
decoder output is identical to the reference decoder output.
 2025-05-13 19:38:08 +01:00
Mark Thompson
1ad57a847e lavc: Add unit test for APV entropy decode 2025-05-13 19:37:53 +01:00
Mark Thompson
a3c8fba5da apv_decode: Multisymbol entropy decode 2025-05-13 19:37:49 +01:00
Michael Niedermayer
9980a0b9b1 avformat/iamfdec: Check side_substream_id before use 
Fixes: poc-iamf-2025-04

Found-by: 苏童 <220235212@seu.edu.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-13 00:26:24 +02:00
Michael Niedermayer
74fd2c3ddb avcodec/h264_mb: Fix tmp_cr for arm 
When decoding a bitstream with weighted-bipred enabled,
the results on ARM and x86 platforms may differ.

The reason for the inconsistency is that the value of
STRIDE_ALIGN differs between platforms. And STRIDE_ALIGN
is set to the buffer stride of temporary buffers for U
and V components in mc_part_weighted.

If the buffer stride is 32 or 64 (as on x86 platforms),
the U and V pixels can be interleaved row by row without
overlapping, resulting in correct output.
However, on ARM platforms where the stride is 16,
the V component did overwrite part of the U component's pixels,
leading to incorrect predicted pixels.

The bug can be reproduced by the following bitstream.

https://trac.ffmpeg.org/attachment/ticket/11357/inter_weighted_bipred2.264

Fixes: ticket 11357
Commit-msg-mostly-by: Bin Peng <pengbin@visionular.com>
Reviewed-by: Bin Peng <pengbin@visionular.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-13 00:20:23 +02:00
Michael Niedermayer
fd5a3c5fed avcodec/vorbisdec: Dont treat overread as error 
This differs from libvorbis by
stddev:    2.44 PSNR: 88.58 MAXDIFF:   41 bytes:   834304/   834304
for the file from the ticket

Fixes: Ticket11427

Regression since: dc89cf804a

This is a similar solution to what james proposed earlier in
[FFmpeg-devel] [PATCH] avcodec/vorbisdec: don't abort on EOD when decoding residuals

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-05-13 00:08:02 +02:00