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 18:48:57 +0200 |
| commit | 865eca9321d67b358b9ff62361891aebbcaccd5c (patch) | |
| tree | 21f823c38a8388406df32ebd9ec4971ca110db36 | |
| parent | d811434b5d731c0fad2eb5fbf3fc3e53df98ae67 (diff) | |
| download | ffmpeg-865eca9321d67b358b9ff62361891aebbcaccd5c.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; |