diff options
| author | Hendrik Leppkes <h.leppkes@gmail.com> | 2023-05-15 13:35:13 +0200 |
|---|---|---|
| committer | Hendrik Leppkes <h.leppkes@gmail.com> | 2023-05-15 18:51:16 +0200 |
| commit | 4c9b34fce8e75562a170fda765d6c7df16c416a2 (patch) | |
| tree | c479ff8288fae01a4cb1fee33ed4c0040af33bd7 | |
| parent | 23023147e26615d403410df6364085bd66822a65 (diff) | |
| download | ffmpeg-4c9b34fce8e75562a170fda765d6c7df16c416a2.tar.gz | |
avcodec/vdpau_mpeg12: fix order of quant matrix coefficients
The matrix coefficients are stored permutated for the IDCT,
rather then in plain raster order, and need to be un-permutated
for the hardware.
| -rw-r--r-- | libavcodec/vdpau_mpeg12.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/libavcodec/vdpau_mpeg12.c b/libavcodec/vdpau_mpeg12.c index d286e7e57d..41b3fd8641 100644 --- a/libavcodec/vdpau_mpeg12.c +++ b/libavcodec/vdpau_mpeg12.c @@ -73,8 +73,9 @@ static int vdpau_mpeg_start_frame(AVCodecContext *avctx, info->f_code[1][0] = s->mpeg_f_code[1][0]; info->f_code[1][1] = s->mpeg_f_code[1][1]; for (i = 0; i < 64; ++i) { - info->intra_quantizer_matrix[i] = s->intra_matrix[i]; - info->non_intra_quantizer_matrix[i] = s->inter_matrix[i]; + int n = s->idsp.idct_permutation[i]; + info->intra_quantizer_matrix[i] = s->intra_matrix[n]; + info->non_intra_quantizer_matrix[i] = s->inter_matrix[n]; } return ff_vdpau_common_start_frame(pic_ctx, buffer, size); |