diff options
| author | Hendrik Leppkes <h.leppkes@gmail.com> | 2023-05-15 12:49:21 +0200 |
|---|---|---|
| committer | Hendrik Leppkes <h.leppkes@gmail.com> | 2023-05-15 18:50:36 +0200 |
| commit | 97c9af0cc9dae4c7bc4b08f700585ed9ecbe2aa4 (patch) | |
| tree | 018b61de7be400b4bee03ed49356ac468ca08bb5 | |
| parent | 51efa68ec0b4f42b5b124b8987fb68f60a929c4f (diff) | |
| download | ffmpeg-97c9af0cc9dae4c7bc4b08f700585ed9ecbe2aa4.tar.gz | |
avcodec/nvdec_mpeg2: 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_mpeg12.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/libavcodec/nvdec_mpeg12.c b/libavcodec/nvdec_mpeg12.c index 7293d50555..230d65d83a 100644 --- a/libavcodec/nvdec_mpeg12.c +++ b/libavcodec/nvdec_mpeg12.c @@ -76,8 +76,9 @@ static int nvdec_mpeg12_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]; } return 0; |