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avcodec/mpegvideo_enc: fix custom matrixes with jpeg

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-18 05:10:48 +01:00
parent 4d55fe7204
commit 0117ba5594
1 changed files with 11 additions and 3 deletions
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14
libavcodec/mpegvideo_enc.c
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@ -3384,7 +3384,7 @@ static int encode_picture(MpegEncContext *s, int picture_number)
update_qscale(s);
}
if(s->codec_id != AV_CODEC_ID_AMV){
if(s->codec_id != AV_CODEC_ID_AMV && s->codec_id != AV_CODEC_ID_MJPEG){
if(s->q_chroma_intra_matrix != s->q_intra_matrix ) av_freep(&s->q_chroma_intra_matrix);
if(s->q_chroma_intra_matrix16 != s->q_intra_matrix16) av_freep(&s->q_chroma_intra_matrix16);
s->q_chroma_intra_matrix = s->q_intra_matrix;
@ -3500,12 +3500,20 @@ static int encode_picture(MpegEncContext *s, int picture_number)
s->qscale= 3; //reduce clipping problems
if (s->out_format == FMT_MJPEG) {
const uint16_t * luma_matrix = ff_mpeg1_default_intra_matrix;
const uint16_t *chroma_matrix = ff_mpeg1_default_intra_matrix;
if (s->avctx->intra_matrix) {
chroma_matrix =
luma_matrix = s->avctx->intra_matrix;
}
/* for mjpeg, we do include qscale in the matrix */
for(i=1;i<64;i++){
int j= s->dsp.idct_permutation[i];
s->chroma_intra_matrix[j] =
s->intra_matrix[j] = av_clip_uint8((ff_mpeg1_default_intra_matrix[i] * s->qscale) >> 3);
s->chroma_intra_matrix[j] = av_clip_uint8((chroma_matrix[i] * s->qscale) >> 3);
s-> intra_matrix[j] = av_clip_uint8(( luma_matrix[i] * s->qscale) >> 3);
}
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg2_dc_scale_table[s->intra_dc_precision];