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avfilter/vf_uspp: use the average QP instead of QP[0] 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-12-12 01:47:46 +01:00
parent 5172782352
commit e1540cdf07
1 changed files with 10 additions and 2 deletions
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12
libavfilter/vf_uspp.c
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@ -227,8 +227,16 @@ static void filter(USPPContext *p, uint8_t *dst[3], uint8_t *src[3],
if (p->qp)
p->frame->quality = p->qp * FF_QP2LAMBDA;
else
p->frame->quality = norm_qscale(qp_store[0], p->qscale_type) * FF_QP2LAMBDA;
else {
int qpsum=0;
int qpcount = (height>>4) * (height>>4);
for (y = 0; y < (height>>4); y++) {
for (x = 0; x < (width>>4); x++)
qpsum += qp_store[x + y * qp_stride];
}
p->frame->quality = norm_qscale((qpsum + qpcount/2) / qpcount, p->qscale_type) * FF_QP2LAMBDA;
}
// init per MB qscale stuff FIXME
p->frame->height = height;
p->frame->width = width;