[FFmpeg-devel] [PATCH] avcodec/cuviddec: fix AV1 decoding error

["zhilizhao(赵志立)"]

> On Jun 24, 2022, at 10:52 AM, zhilizhao(赵志立) <quinkblack at foxmail.com> wrote:
> 
> 
> 
>> On Jun 23, 2022, at 10:14 PM, Timo Rothenpieler <timo at rothenpieler.org> wrote:
>> 
>> On 23/06/2022 11:10, Zhao Zhili wrote:
>>> From: Zhao Zhili <zhilizhao at tencent.com>
>>> Regression from 45e3b6a68. cuvidParseVideoData report unknown
>>> error with AV1CodecConfigurationRecord.
>>> ---
>>> libavcodec/cuviddec.c | 11 +++++++++++
>>> 1 file changed, 11 insertions(+)
>>> diff --git a/libavcodec/cuviddec.c b/libavcodec/cuviddec.c
>>> index cb3cda7e24..584fff40ed 100644
>>> --- a/libavcodec/cuviddec.c
>>> +++ b/libavcodec/cuviddec.c
>>> @@ -953,6 +953,17 @@ static av_cold int cuvid_decode_init(AVCodecContext *avctx)
>>>         extradata_size = avctx->extradata_size;
>>>     }
>>> +#if CONFIG_AV1_CUVID_DECODER && defined(CUVID_HAS_AV1_SUPPORT)
>>> +    if (avctx->codec->id == AV_CODEC_ID_AV1 &&
>>> +            extradata_size > 4 &&
>>> +            extradata && extradata[0] & 0x80) {
>>> +        // skip AV1CodecConfigurationRecord to keep configOBUs only,
>>> +        // otherwise cuvidParseVideoData report unknown error.
>>> +        extradata += 4;
>>> +        extradata_size -= 4;
>>> +    }
>>> +#endif
>> 
...
> 
>> 
>> A little more info in the commit message would be nice here. Specially a sentence or two about the "& 80" part.
> 
> Will add comments about the “& 80” part.

v2 (Sorry I forgot to add v2 in patch subject):

http://ffmpeg.org/pipermail/ffmpeg-devel/2022-June/297983.html

> 
> Thanks for the review!
> 
>> Code LGTM otherwise.
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