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| author | Hendrik Leppkes <h.leppkes@gmail.com> | 2023-05-15 13:33:18 +0200 |
|---|---|---|
| committer | Hendrik Leppkes <h.leppkes@gmail.com> | 2023-05-15 18:49:41 +0200 |
| commit | 84ea3afdaed1f72359d56ca6ae07bdbd5c9933c2 (patch) | |
| tree | c46c5ca5d5ed11c5e838acac47ed6969b55af879 | |
| parent | 1c19e2c82d38244887e279d62e1d542e8932a532 (diff) | |
| download | ffmpeg-84ea3afdaed1f72359d56ca6ae07bdbd5c9933c2.tar.gz | |
avcodec/nvdec_mpeg4: 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_mpeg4.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/libavcodec/nvdec_mpeg4.c b/libavcodec/nvdec_mpeg4.c index 739b049933..5404e4e330 100644 --- a/libavcodec/nvdec_mpeg4.c +++ b/libavcodec/nvdec_mpeg4.c @@ -86,8 +86,9 @@ static int nvdec_mpeg4_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]; } // We need to pass the full frame buffer and not just the slice |