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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 18:30:38 +0200 |
| commit | af8affb77efe8e1b9cfb4a288aec8feb8c25f569 (patch) | |
| tree | 86b9cb1088ffd4b08fb3f74b2f640c1c6ae49b24 | |
| parent | 9d70e74d255dbe37af52b0efffc0f93fd7cb6103 (diff) | |
| download | ffmpeg-af8affb77efe8e1b9cfb4a288aec8feb8c25f569.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; |