virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

avcodec/nvdec_mpeg4: fix order of quant matrix coefficients

Browse Source 
The matrix coefficients are stored permutated for the IDCT,
rather then in plain raster order, and need to be un-permutated
for the hardware.
This commit is contained in:
Hendrik Leppkes 2023-05-15 13:33:18 +02:00
parent e6f7183eb6
commit a4f995fa84
No known key found for this signature in database
GPG Key ID: 846079A4B0A7C1B5
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
libavcodec/nvdec_mpeg4.c
View File

@ -88,8 +88,9 @@ 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