Cross Reference: /external/libvorbis/lib/bitrate.c

Lines Matching refs:bm
29 void vorbis_bitrate_init(vorbis_info *vi,bitrate_manager_state *bm){
33   memset(bm,0,sizeof(*bm));
39     bm->short_per_long=ci->blocksizes[1]/ci->blocksizes[0];
40     bm->managed=1;
42     bm->avg_bitsper= rint(1.*bi->avg_rate*halfsamples/ratesamples);
43     bm->min_bitsper= rint(1.*bi->min_rate*halfsamples/ratesamples);
44     bm->max_bitsper= rint(1.*bi->max_rate*halfsamples/ratesamples);
46     bm->avgfloat=PACKETBLOBS/2;
52       bm->minmax_reservoir=desired_fill;
53       bm->avg_reservoir=desired_fill;
59 void vorbis_bitrate_clear(bitrate_manager_state *bm){
60   memset(bm,0,sizeof(*bm));
67   bitrate_manager_state *bm=&b->bms;
69   if(bm && bm->managed)return(1);
78   bitrate_manager_state *bm=&b->bms;
83   int  choice=rint(bm->avgfloat);
85   long min_target_bits=(vb->W?bm->min_bitsper*bm->short_per_long:bm->min_bitsper);
86   long max_target_bits=(vb->W?bm->max_bitsper*bm->short_per_long:bm->max_bitsper);
89   if(!bm->managed){
93     if(bm->vb)return(-1); /* one has been submitted without
95     bm->vb=vb;
99   bm->vb=vb;
102   if(bm->avg_bitsper>0){
104     long avg_target_bits=(vb->W?bm->avg_bitsper*bm->short_per_long:bm->avg_bitsper);
118     if(bm->avg_reservoir+(this_bits-avg_target_bits)>desired_fill){
120             bm->avg_reservoir+(this_bits-avg_target_bits)>desired_fill){
124     }else if(bm->avg_reservoir+(this_bits-avg_target_bits)<desired_fill){
126             bm->avg_reservoir+(this_bits-avg_target_bits)<desired_fill){
132     slew=rint(choice-bm->avgfloat)/samples*vi->rate;
135     choice=rint(bm->avgfloat+= slew/vi->rate*samples);
142   if(bm->min_bitsper>0){
145       while(bm->minmax_reservoir-(min_target_bits-this_bits)<0){
154   if(bm->max_bitsper>0){
157       while(bm->minmax_reservoir+(this_bits-max_target_bits)>bi->reservoir_bits){
171     long maxsize=(max_target_bits+(bi->reservoir_bits-bm->minmax_reservoir))/8;
172     bm->choice=choice=0;
180     long minsize=(min_target_bits-bm->minmax_reservoir+7)/8;
184     bm->choice=choice;
195   if(bm->min_bitsper>0 || bm->max_bitsper>0){
198       bm->minmax_reservoir+=(this_bits-max_target_bits);
200       bm->minmax_reservoir+=(this_bits-min_target_bits);
203       if(bm->minmax_reservoir>desired_fill){
205           bm->minmax_reservoir+=(this_bits-max_target_bits);
206           if(bm->minmax_reservoir<desired_fill)bm->minmax_reservoir=desired_fill;
208           bm->minmax_reservoir=desired_fill;
212           bm->minmax_reservoir+=(this_bits-min_target_bits);
213           if(bm->minmax_reservoir>desired_fill)bm->minmax_reservoir=desired_fill;
215           bm->minmax_reservoir=desired_fill;
222   if(bm->avg_bitsper>0){
223     long avg_target_bits=(vb->W?bm->avg_bitsper*bm->short_per_long:bm->avg_bitsper);
224     bm->avg_reservoir+=this_bits-avg_target_bits;
232   bitrate_manager_state *bm=&b->bms;
233   vorbis_block          *vb=bm->vb;
241       choice=bm->choice;
251   bm->vb=0;