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| author | Hendrik Leppkes <h.leppkes@gmail.com> | 2023-05-15 12:49:21 +0200 |
|---|---|---|
| committer | Hendrik Leppkes <h.leppkes@gmail.com> | 2023-05-15 18:43:39 +0200 |
| commit | 5086261af4ddd92b68e9aa72640174e7b1b2ea3a (patch) | |
| tree | 183b7df7a7e19d38ba3460b1cf23af671eba69fe | |
| parent | e30302c63638b0dfc5ba4bc60146c44d4af5ce40 (diff) | |
| download | ffmpeg-5086261af4ddd92b68e9aa72640174e7b1b2ea3a.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 9a9030d8d3..746d720888 100644 --- a/libavcodec/nvdec_mpeg12.c +++ b/libavcodec/nvdec_mpeg12.c @@ -80,8 +80,9 @@ 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; |