diff options
author | Hendrik Leppkes <h.leppkes@gmail.com> | 2023-05-15 13:33:18 +0200 |
---|---|---|
committer | Hendrik Leppkes <h.leppkes@gmail.com> | 2023-05-15 18:50:36 +0200 |
commit | ab9b4ea207120c565ca78b8fc304b6e2cd7f0cdf (patch) | |
tree | 6f85cc85ded08bc1c98490d93a7025b9c9800440 | |
parent | 97c9af0cc9dae4c7bc4b08f700585ed9ecbe2aa4 (diff) | |
download | ffmpeg-ab9b4ea207120c565ca78b8fc304b6e2cd7f0cdf.tar.gz |
avcodec/nvdec_mpeg4: 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/nvdec_mpeg4.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/libavcodec/nvdec_mpeg4.c b/libavcodec/nvdec_mpeg4.c index 907af1391a..a3e2d27150 100644 --- a/libavcodec/nvdec_mpeg4.c +++ b/libavcodec/nvdec_mpeg4.c @@ -86,8 +86,9 @@ static int nvdec_mpeg4_start_frame(AVCodecContext *avctx, const uint8_t *buffer, }; for (i = 0; i < 64; ++i) { - ppc->QuantMatrixIntra[i] = s->intra_matrix[i]; - ppc->QuantMatrixInter[i] = s->inter_matrix[i]; + int n = s->idsp.idct_permutation[i]; + ppc->QuantMatrixIntra[i] = s->intra_matrix[n]; + ppc->QuantMatrixInter[i] = s->inter_matrix[n]; } // We need to pass the full frame buffer and not just the slice |