Re: [FFmpeg-devel] [PATCH 1/6] avcodec/packet: add a decoded frame cropping side data type

[James Almer <jamrial@gmail.com>]

On 6/25/2024 3:13 PM, Andreas Rheinhardt wrote:
> James Almer:
>> Signed-off-by: James Almer <jamrial@gmail.com>
>> ---
>>   libavcodec/packet.h | 14 ++++++++++++++
>>   1 file changed, 14 insertions(+)
>>
>> diff --git a/libavcodec/packet.h b/libavcodec/packet.h
>> index a9a41576da..9dee035690 100644
>> --- a/libavcodec/packet.h
>> +++ b/libavcodec/packet.h
>> @@ -330,6 +330,20 @@ enum AVPacketSideDataType {
>>       */
>>       AV_PKT_DATA_AMBIENT_VIEWING_ENVIRONMENT,
>>   
>> +    /**
>> +     * The number of pixels to discard from the
>> +     * top/bottom/left/right border of the decoded frame to obtain the sub-rectangle
>> +     * intended for presentation.
>> +     *
>> +     * @code
>> +     * u32le crop_top
>> +     * u32le crop_bottom
>> +     * u32le crop_left
>> +     * u32le crop_right
>> +     * @endcode
>> +     */
>> +    AV_PKT_DATA_FRAME_CROPPING,
>> +
>>       /**
>>        * The number of side data types.
>>        * This is not part of the public API/ABI in the sense that it may
> 
> As I already said about an earlier iteration of this: The cropping is a
> rational in ISOBMFF, so it should be here, too.

No, i don't want it being a rational. It even makes no sense being one 
in ISOBMFF to begin with. I don't consider it worth making things any 
more complex.
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