[FFmpeg-devel] [PATCH] avcodec/opus: always use ambisonic layout for mapping family 2

[James Almer]

On 3/20/2022 7:09 PM, Michael Niedermayer wrote:
> On Thu, Mar 17, 2022 at 10:43:15PM -0300, James Almer wrote:
>> No need to use a Custom layout when the non diegetic channels can be
>> described as a standard mask.
>>
>> Signed-off-by: James Almer <jamrial at gmail.com>
>> ---
>>   libavcodec/opus.c | 17 +++--------------
>>   1 file changed, 3 insertions(+), 14 deletions(-)
> 
> This fixes: (please mention this in the commit and dont forget to apply this patch or an equivalent one)

Added and applied. Thanks.

> 
> 45684/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LIBOPUS_fuzzer-5039410989629440
> 
> =================================================================
> ==7879==ERROR: LeakSanitizer: detected memory leaks
> 
> Direct leak of 96 byte(s) in 1 object(s) allocated from:
>      #0 0x497dd7 in posix_memalign /b/swarming/w/ir/cache/builder/src/third_party/llvm/compiler-rt/lib/asan/asan_malloc_linux.cc:226:3
>      #1 0x1229708 in av_malloc libavutil/mem.c:105:9
>      #2 0x1229f3b in av_mallocz libavutil/mem.c:266:17
>      #3 0x1229f3b in av_calloc libavutil/mem.c:277
>      #4 0xf469c7 in ff_opus_parse_extradata libavcodec/opus.c:407:32
>      #5 0xbb4091 in opus_find_frame_end libavcodec/opus_parser.c:128:15
>      #6 0xbb4091 in opus_parse libavcodec/opus_parser.c:173
>      #7 0x5c0883 in av_parser_parse2 libavcodec/parser.c:164:13
>      #8 0x4cb83f in LLVMFuzzerTestOneInput tools/target_dec_fuzzer.c:396:27
>      #9 0x12a68ed in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) Fuzzer/build/../FuzzerLoop.cpp:495:13
>      #10 0x129b4c2 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) Fuzzer/build/../FuzzerDriver.cpp:273:6
>      #11 0x12a06c1 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) Fuzzer/build/../FuzzerDriver.cpp:690:9
>      #12 0x129b1a0 in main Fuzzer/build/../FuzzerMain.cpp:20:10
>      #13 0x7f79c2017c86 in __libc_start_main /build/glibc-uZu3wS/glibc-2.27/csu/../csu/libc-start.c:310
> 
> SUMMARY: AddressSanitizer: 96 byte(s) leaked in 1 allocation(s).
> 
> thx
> 
> [...]
> 
> 
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