diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2003-07-16 11:48:59 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2003-07-16 11:48:59 +0000 |
| commit | fa12b5469db087c5eb5652700fce4df8a94296dc (patch) | |
| tree | fbf5bbe05fe169efcf72f38d4623a25e40b48d33 /libavcodec/ratecontrol.c | |
| parent | afdd82bbf0350c7c74f5889117f340ba30a15476 (diff) | |
fix qmin==qmax==1 && msmpeg4 && intra bug
Originally committed as revision 2051 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/ratecontrol.c')
| -rw-r--r-- | libavcodec/ratecontrol.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/libavcodec/ratecontrol.c b/libavcodec/ratecontrol.c index 80f65d9242..23c74784da 100644 --- a/libavcodec/ratecontrol.c +++ b/libavcodec/ratecontrol.c @@ -358,6 +358,8 @@ static double get_diff_limited_q(MpegEncContext *s, RateControlEntry *rce, doubl static void get_qminmax(int *qmin_ret, int *qmax_ret, MpegEncContext *s, int pict_type){ int qmin= s->avctx->qmin; int qmax= s->avctx->qmax; + + assert(qmin <= qmax); if(pict_type==B_TYPE){ qmin= (int)(qmin*ABS(s->avctx->b_quant_factor)+s->avctx->b_quant_offset + 0.5); @@ -367,13 +369,14 @@ static void get_qminmax(int *qmin_ret, int *qmax_ret, MpegEncContext *s, int pic qmax= (int)(qmax*ABS(s->avctx->i_quant_factor)+s->avctx->i_quant_offset + 0.5); } - if(qmin<1) qmin=1; + qmin= clip(qmin, 1, 31); + qmax= clip(qmax, 1, 31); + if(qmin==1 && s->avctx->qmin>1) qmin=2; //avoid qmin=1 unless the user wants qmin=1 if(qmin<3 && s->max_qcoeff<=128 && pict_type==I_TYPE) qmin=3; //reduce cliping problems - if(qmax>31) qmax=31; - if(qmax<=qmin) qmax= qmin= (qmax+qmin+1)>>1; + if(qmax<qmin) qmax= qmin; *qmin_ret= qmin; *qmax_ret= qmax; |