From 419248dd19f98e244e704641d010faa0b3cca4bb Mon Sep 17 00:00:00 2001 From: Hendrik Leppkes Date: Mon, 15 May 2023 13:35:13 +0200 Subject: avcodec/vdpau_mpeg12: 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. --- libavcodec/vdpau_mpeg12.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/libavcodec/vdpau_mpeg12.c b/libavcodec/vdpau_mpeg12.c index d286e7e57d..41b3fd8641 100644 --- a/libavcodec/vdpau_mpeg12.c +++ b/libavcodec/vdpau_mpeg12.c @@ -73,8 +73,9 @@ static int vdpau_mpeg_start_frame(AVCodecContext *avctx, info->f_code[1][0] = s->mpeg_f_code[1][0]; info->f_code[1][1] = s->mpeg_f_code[1][1]; for (i = 0; i < 64; ++i) { - info->intra_quantizer_matrix[i] = s->intra_matrix[i]; - info->non_intra_quantizer_matrix[i] = s->inter_matrix[i]; + int n = s->idsp.idct_permutation[i]; + info->intra_quantizer_matrix[i] = s->intra_matrix[n]; + info->non_intra_quantizer_matrix[i] = s->inter_matrix[n]; } return ff_vdpau_common_start_frame(pic_ctx, buffer, size); -- cgit v1.2.1