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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 18:42:37 +0200 |
| commit | e6f7183eb68ce22a116ec9a2abd014b10ae50954 (patch) | |
| tree | 4d3a92b929148de10a606c6e7c8315495496123b | |
| parent | 1e413487bf8ff413796d1cf1d9adafcd36f04444 (diff) | |
| download | ffmpeg-e6f7183eb68ce22a116ec9a2abd014b10ae50954.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 e10735587d..3b9ff60734 100644 --- a/libavcodec/nvdec_mpeg12.c +++ b/libavcodec/nvdec_mpeg12.c @@ -83,8 +83,9 @@ 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; |