[FFmpeg-devel] [PATCH 1/3] avcodec/kmvc: Prefer in-band palette

Andreas Rheinhardt andreas.rheinhardt at gmail.com
Wed Mar 24 02:45:38 EET 2021


Andreas Rheinhardt:
> Fixes decoding of https://samples.ffmpeg.org/V-codecs/KMVC/LOGO2.AVI
> 
> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
> ---
>  libavcodec/kmvc.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/libavcodec/kmvc.c b/libavcodec/kmvc.c
> index cd9e32f443..8d9f0a9693 100644
> --- a/libavcodec/kmvc.c
> +++ b/libavcodec/kmvc.c
> @@ -275,6 +275,8 @@ static int decode_frame(AVCodecContext * avctx, void *data, int *got_frame,
>      if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
>          return ret;
>  
> +    frame->palette_has_changed = ff_copy_palette(ctx->pal, avpkt, avctx);
> +
>      header = bytestream2_get_byte(&ctx->g);
>  
>      /* blocksize 127 is really palette change event */
> @@ -303,9 +305,6 @@ static int decode_frame(AVCodecContext * avctx, void *data, int *got_frame,
>          }
>      }
>  
> -    if (ff_copy_palette(ctx->pal, avpkt, avctx))
> -        frame->palette_has_changed = 1;
> -
>      if (ctx->setpal) {
>          ctx->setpal = 0;
>          frame->palette_has_changed = 1;
> 
Will apply this patchset tomorrow unless there are objections.

- Andreas


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