avcodec/av1_vaapi: fixed a decoding corruption issue

In av1_spec.pdf page 38/669, there is a sentence below:

if ( frame_type == KEY_FRAME && show_frame ) {
   for ( i = 0; i < NUM_REF_FRAMES; i++) {
      RefValid[ i ] = 0
      ......
   }
   ......
}

This shows that the condition of invalidating current
DPB frames should be the coming frame_type is KEY_FRAME plus
show_frame is equal to 1. Otherwise, some of the frames
in sequence after KEY_FRAME still refer to the reference frames
before KEY_FRAME, and if these before KEY_FRAME reference
frames were invalidated, these frames could not find their
reference frames, and it could cause image corruption.

Mesa fix is in https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19386

Reviewed-by: Fei Wang <fei.w.wang@intel.com>
Signed-off-by: Ruijing Dong <ruijing.dong@amd.com>

0 files changed, 0 insertions, 0 deletions