[FFmpeg-devel] [PATCH 2/2] lavu/hwcontext_vaapi: add nv21 map

[mypopy at gmail.com]

2018-05-24 8:07 GMT+08:00 Mark Thompson <sw at jkqxz.net>:
> On 23/05/18 11:29, Jun Zhao wrote:
>> Signed-off-by: Jun Zhao <mypopydev at gmail.com>
>> ---
>>  libavutil/hwcontext_vaapi.c | 3 +++
>>  1 file changed, 3 insertions(+)
>>
>> diff --git a/libavutil/hwcontext_vaapi.c b/libavutil/hwcontext_vaapi.c
>> index 5bdb02f..7b3cbea 100644
>> --- a/libavutil/hwcontext_vaapi.c
>> +++ b/libavutil/hwcontext_vaapi.c
>> @@ -100,6 +100,9 @@ static const struct {
>>      enum AVPixelFormat pix_fmt;
>>  } vaapi_format_map[] = {
>>      MAP(NV12, YUV420,  NV12),
>> +#ifdef VA_FOURCC_NV21
>> +    MAP(NV21, YUV420,  NV21),    // As NV12 with U and V reversed
>> +#endif
>>      MAP(YV12, YUV420,  YUV420P), // With U/V planes swapped.
>>      MAP(IYUV, YUV420,  YUV420P),
>>  #ifdef VA_FOURCC_I420
>>
>
> Sure, but why would anyone ever use this format?
>
> - Mark

I don't know why iHD driver return NV21 in fact, I just
want to remove an unknow enrty dump when map the pixel format