On Wed, 23 May 2018 18:29:20 +0800
Jun Zhao <mypopy...@gmail.com> wrote:
> Signed-off-by: Jun Zhao <mypopy...@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
Why does this format exist and why is it "needed"?
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