Re: [FFmpeg-devel] [PATCH] avcodec/vaapi_encode_vp9: fix > 4k encode fail issue

["Xiang, Haihao" <haihao.xiang@intel.com>]

On Fri, 2021-12-24 at 16:19 +0800, lance.lmwang@gmail.com wrote:
> On Fri, Dec 24, 2021 at 07:32:28AM +0000, Xiang, Haihao wrote:
> > On Mon, 2021-04-12 at 09:47 +0800, Zhang yuankun wrote:
> > > This patch will fix following command:
> > > ffmpeg -hwaccel vaapi -hwaccel_output_format vaapi -i input.264 \
> > > -vf 'scale_vaapi=w=7680:h=4096' -c:v vp9_vaapi output.ivf
> > > 
> > > Max width of a vp9 tile is 4096. If the source frame > 4096, we need split
> > > to
> > > multiple tiles.
> > > 
> > > Signed-off-by: Zhang yuankun <yuankunx.zhang@intel.com>
> > > ---
> > >  libavcodec/vaapi_encode_vp9.c | 8 ++++++++
> > >  1 file changed, 8 insertions(+)
> > > 
> > > diff --git a/libavcodec/vaapi_encode_vp9.c b/libavcodec/vaapi_encode_vp9.c
> > > index 0e1c52c92a..ed45cd6d03 100644
> > > --- a/libavcodec/vaapi_encode_vp9.c
> > > +++ b/libavcodec/vaapi_encode_vp9.c
> > > @@ -31,6 +31,7 @@
> > >  
> > >  #define VP9_MAX_QUANT 255
> > >  
> > > +#define VP9_MAX_TILE_WIDTH 4096
> > >  
> > >  typedef struct VAAPIEncodeVP9Picture {
> > >      int slot;
> > > @@ -82,10 +83,17 @@ static int
> > > vaapi_encode_vp9_init_picture_params(AVCodecContext *avctx,
> > >      VAAPIEncodeVP9Picture          *hpic = pic->priv_data;
> > >      VAEncPictureParameterBufferVP9 *vpic = pic->codec_picture_params;
> > >      int i;
> > > +    int num_tile_columns;
> > >  
> > >      vpic->reconstructed_frame = pic->recon_surface;
> > >      vpic->coded_buf = pic->output_buffer;
> > >  
> > > +    // Maximum width of a tile in units of superblocks is
> > > MAX_TILE_WIDTH_B64(64)
> > > +    // So the number of tile columns is related to the width of the
> > > picture.
> > > +    // We set the minimum possible number for num_tile_columns as defualt
> 
> defualt -> default

Thanks, will fix this typo when pushing the patch. 

> 
> > > value.
> > > +    num_tile_columns = (vpic->frame_width_src + VP9_MAX_TILE_WIDTH - 1) /
> > > VP9_MAX_TILE_WIDTH;
> > > +    vpic->log2_tile_columns = num_tile_columns == 1 ? 0 :
> > > av_log2(num_tile_columns - 1) + 1;
> > > +
> > >      switch (pic->type) {
> > >      case PICTURE_TYPE_IDR:
> > >          av_assert0(pic->nb_refs == 0);
> > 
> > LGTM, will apply
> > 
> > -Haihao
> > 
> > _______________________________________________
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> > 
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> 
> 
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