Re: [PATCH v8 0/2] MR7623: winegstreamer: Use provided PTS and duration in video_decoder.

[Rémi Bernon (＠rbernon)]

Rémi Bernon (@rbernon) commented about dlls/winegstreamer/video_decoder.c:
> -
>    if (decoder->provide_timestamps)
> -
>    {
>        if (FAILED(IMFMediaType_GetUINT64(decoder->input_type, &MF_MT_FRAME_RATE, &frame_rate)))
>            frame_rate = (UINT64)30000 << 32 | 1001;
>
> -
>    duration = (UINT64)10000000 * (UINT32)frame_rate / (frame_rate >> 32);
> -
>    if (FAILED(IMFSample_SetSampleTime(sample, decoder->sample_time)))
> -
>        duration = ((UINT64)10000000 * (UINT32)frame_rate + (frame_rate >> 32)/2) / (frame_rate >> 32);
> -
>    }
> -
> -
>    if (SUCCEEDED(IMFSample_GetUINT32(sample, &MFSampleExtension_WG_Timestamp, &value)) && value)
> -
>    {
> -
>        if (FAILED(IMFSample_GetSampleTime(sample, (LONGLONG*)&decoder->sample_time)))
> -
>            WARN("Failed to get sample time\n");
> -
>        if (FAILED(IMFSample_GetSampleDuration(sample, &duration)) && FAILED(IMFSample_SetSampleDuration(sample, duration)))
> -
>            WARN("Failed to get and set sample duration\n");

I don't understand what this does?