[FFmpeg-devel] [PATCH] avformat/wavdec: increase requested probe score for codec probe

[Marton Balint]

On Sat, 10 May 2025, Michael Niedermayer wrote:

> On Fri, May 09, 2025 at 01:54:22PM +0200, Marton Balint wrote:
>>
>>
>> On Fri, 9 May 2025, Michael Niedermayer wrote:
>>
>>> On Fri, May 09, 2025 at 12:28:00AM +0200, Marton Balint wrote:
>>>> Codec probing was primarily added to the wav demuxer to support DTS-in-wav
>>>> files, but DTS probing functions return AVPROBE_SCORE_EXTENSION+1, so we can be
>>>> a bit more strict with the required score.
>>>>
>>>> This fixes MP3 misdetections for some wav files.
>>>>
>>>> Fixes ticket #11581.
>>>>
>>>> Signed-off-by: Marton Balint <cus at passwd.hu>
>>>> ---
>>>>  libavformat/wavdec.c | 2 +-
>>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c
>>>> index dc7e49abc4..c65e0a2723 100644
>>>> --- a/libavformat/wavdec.c
>>>> +++ b/libavformat/wavdec.c
>>>> @@ -178,7 +178,7 @@ static void handle_stream_probing(AVStream *st)
>>>>  {
>>>>      if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE) {
>>>>          FFStream *const sti = ffstream(st);
>>>> -        sti->request_probe = AVPROBE_SCORE_EXTENSION;
>>>> +        sti->request_probe = AVPROBE_SCORE_EXTENSION + 1;
>>>>          sti->probe_packets = FFMIN(sti->probe_packets, 32);
>>>>      }
>>>>  }
>>>
>>> please add a testcase to fate, if possible. Such corner cases
>>> are important to be in fate
>>
>> Sample is in the ticket, so it should be pretty trivial to do so. Can't we
>
>> fund someone to do this and the other fixed trac tickets without fate tests?
>
> Iam in favor of funding that
>
> see https://trac.ffmpeg.org/wiki/SponsoringPrograms/STF/2025

Will apply the patch.

Regards,
Marton