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view libs/vorbis/vorbisenc.c @ 1:e7ca128b8713
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| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Sun, 02 Feb 2014 00:35:22 +0200 |
| parents | |
| children |
line source
1 /********************************************************************
2 * *
3 * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
5 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
6 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
7 * *
8 * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009 *
9 * by the Xiph.Org Foundation http://www.xiph.org/ *
10 * *
11 ********************************************************************
13 function: simple programmatic interface for encoder mode setup
14 last mod: $Id: vorbisenc.c 17028 2010-03-25 05:22:15Z xiphmont $
16 ********************************************************************/
18 #include <stdlib.h>
19 #include <string.h>
20 #include <math.h>
22 #include "vorbis/codec.h"
23 #include "vorbis/vorbisenc.h"
25 #include "codec_internal.h"
27 #include "os.h"
28 #include "misc.h"
30 /* careful with this; it's using static array sizing to make managing
31 all the modes a little less annoying. If we use a residue backend
32 with > 12 partition types, or a different division of iteration,
33 this needs to be updated. */
34 typedef struct {
35 const static_codebook *books[12][4];
36 } static_bookblock;
38 typedef struct {
39 int res_type;
40 int limit_type; /* 0 lowpass limited, 1 point stereo limited */
41 int grouping;
42 const vorbis_info_residue0 *res;
43 const static_codebook *book_aux;
44 const static_codebook *book_aux_managed;
45 const static_bookblock *books_base;
46 const static_bookblock *books_base_managed;
47 } vorbis_residue_template;
49 typedef struct {
50 const vorbis_info_mapping0 *map;
51 const vorbis_residue_template *res;
52 } vorbis_mapping_template;
54 typedef struct vp_adjblock{
55 int block[P_BANDS];
56 } vp_adjblock;
58 typedef struct {
59 int data[NOISE_COMPAND_LEVELS];
60 } compandblock;
62 /* high level configuration information for setting things up
63 step-by-step with the detailed vorbis_encode_ctl interface.
64 There's a fair amount of redundancy such that interactive setup
65 does not directly deal with any vorbis_info or codec_setup_info
66 initialization; it's all stored (until full init) in this highlevel
67 setup, then flushed out to the real codec setup structs later. */
69 typedef struct {
70 int att[P_NOISECURVES];
71 float boost;
72 float decay;
73 } att3;
74 typedef struct { int data[P_NOISECURVES]; } adj3;
76 typedef struct {
77 int pre[PACKETBLOBS];
78 int post[PACKETBLOBS];
79 float kHz[PACKETBLOBS];
80 float lowpasskHz[PACKETBLOBS];
81 } adj_stereo;
83 typedef struct {
84 int lo;
85 int hi;
86 int fixed;
87 } noiseguard;
88 typedef struct {
89 int data[P_NOISECURVES][17];
90 } noise3;
92 typedef struct {
93 int mappings;
94 const double *rate_mapping;
95 const double *quality_mapping;
96 int coupling_restriction;
97 long samplerate_min_restriction;
98 long samplerate_max_restriction;
101 const int *blocksize_short;
102 const int *blocksize_long;
104 const att3 *psy_tone_masteratt;
105 const int *psy_tone_0dB;
106 const int *psy_tone_dBsuppress;
108 const vp_adjblock *psy_tone_adj_impulse;
109 const vp_adjblock *psy_tone_adj_long;
110 const vp_adjblock *psy_tone_adj_other;
112 const noiseguard *psy_noiseguards;
113 const noise3 *psy_noise_bias_impulse;
114 const noise3 *psy_noise_bias_padding;
115 const noise3 *psy_noise_bias_trans;
116 const noise3 *psy_noise_bias_long;
117 const int *psy_noise_dBsuppress;
119 const compandblock *psy_noise_compand;
120 const double *psy_noise_compand_short_mapping;
121 const double *psy_noise_compand_long_mapping;
123 const int *psy_noise_normal_start[2];
124 const int *psy_noise_normal_partition[2];
125 const double *psy_noise_normal_thresh;
127 const int *psy_ath_float;
128 const int *psy_ath_abs;
130 const double *psy_lowpass;
132 const vorbis_info_psy_global *global_params;
133 const double *global_mapping;
134 const adj_stereo *stereo_modes;
136 const static_codebook *const *const *const floor_books;
137 const vorbis_info_floor1 *floor_params;
138 const int floor_mappings;
139 const int **floor_mapping_list;
141 const vorbis_mapping_template *maps;
142 } ve_setup_data_template;
144 /* a few static coder conventions */
145 static const vorbis_info_mode _mode_template[2]={
146 {0,0,0,0},
147 {1,0,0,1}
148 };
150 static const vorbis_info_mapping0 _map_nominal[2]={
151 {1, {0,0}, {0}, {0}, 1,{0},{1}},
152 {1, {0,0}, {1}, {1}, 1,{0},{1}}
153 };
155 #include "modes/setup_44.h"
156 #include "modes/setup_44u.h"
157 #include "modes/setup_44p51.h"
158 #include "modes/setup_32.h"
159 #include "modes/setup_8.h"
160 #include "modes/setup_11.h"
161 #include "modes/setup_16.h"
162 #include "modes/setup_22.h"
163 #include "modes/setup_X.h"
165 static const ve_setup_data_template *const setup_list[]={
166 &ve_setup_44_stereo,
167 &ve_setup_44_51,
168 &ve_setup_44_uncoupled,
170 &ve_setup_32_stereo,
171 &ve_setup_32_uncoupled,
173 &ve_setup_22_stereo,
174 &ve_setup_22_uncoupled,
175 &ve_setup_16_stereo,
176 &ve_setup_16_uncoupled,
178 &ve_setup_11_stereo,
179 &ve_setup_11_uncoupled,
180 &ve_setup_8_stereo,
181 &ve_setup_8_uncoupled,
183 &ve_setup_X_stereo,
184 &ve_setup_X_uncoupled,
185 &ve_setup_XX_stereo,
186 &ve_setup_XX_uncoupled,
187 0
188 };
190 static void vorbis_encode_floor_setup(vorbis_info *vi,int s,
191 const static_codebook *const *const *const books,
192 const vorbis_info_floor1 *in,
193 const int *x){
194 int i,k,is=s;
195 vorbis_info_floor1 *f=_ogg_calloc(1,sizeof(*f));
196 codec_setup_info *ci=vi->codec_setup;
198 memcpy(f,in+x[is],sizeof(*f));
200 /* books */
201 {
202 int partitions=f->partitions;
203 int maxclass=-1;
204 int maxbook=-1;
205 for(i=0;i<partitions;i++)
206 if(f->partitionclass[i]>maxclass)maxclass=f->partitionclass[i];
207 for(i=0;i<=maxclass;i++){
208 if(f->class_book[i]>maxbook)maxbook=f->class_book[i];
209 f->class_book[i]+=ci->books;
210 for(k=0;k<(1<<f->class_subs[i]);k++){
211 if(f->class_subbook[i][k]>maxbook)maxbook=f->class_subbook[i][k];
212 if(f->class_subbook[i][k]>=0)f->class_subbook[i][k]+=ci->books;
213 }
214 }
216 for(i=0;i<=maxbook;i++)
217 ci->book_param[ci->books++]=(static_codebook *)books[x[is]][i];
218 }
220 /* for now, we're only using floor 1 */
221 ci->floor_type[ci->floors]=1;
222 ci->floor_param[ci->floors]=f;
223 ci->floors++;
225 return;
226 }
228 static void vorbis_encode_global_psych_setup(vorbis_info *vi,double s,
229 const vorbis_info_psy_global *in,
230 const double *x){
231 int i,is=s;
232 double ds=s-is;
233 codec_setup_info *ci=vi->codec_setup;
234 vorbis_info_psy_global *g=&ci->psy_g_param;
236 memcpy(g,in+(int)x[is],sizeof(*g));
238 ds=x[is]*(1.-ds)+x[is+1]*ds;
239 is=(int)ds;
240 ds-=is;
241 if(ds==0 && is>0){
242 is--;
243 ds=1.;
244 }
246 /* interpolate the trigger threshholds */
247 for(i=0;i<4;i++){
248 g->preecho_thresh[i]=in[is].preecho_thresh[i]*(1.-ds)+in[is+1].preecho_thresh[i]*ds;
249 g->postecho_thresh[i]=in[is].postecho_thresh[i]*(1.-ds)+in[is+1].postecho_thresh[i]*ds;
250 }
251 g->ampmax_att_per_sec=ci->hi.amplitude_track_dBpersec;
252 return;
253 }
255 static void vorbis_encode_global_stereo(vorbis_info *vi,
256 const highlevel_encode_setup *const hi,
257 const adj_stereo *p){
258 float s=hi->stereo_point_setting;
259 int i,is=s;
260 double ds=s-is;
261 codec_setup_info *ci=vi->codec_setup;
262 vorbis_info_psy_global *g=&ci->psy_g_param;
264 if(p){
265 memcpy(g->coupling_prepointamp,p[is].pre,sizeof(*p[is].pre)*PACKETBLOBS);
266 memcpy(g->coupling_postpointamp,p[is].post,sizeof(*p[is].post)*PACKETBLOBS);
268 if(hi->managed){
269 /* interpolate the kHz threshholds */
270 for(i=0;i<PACKETBLOBS;i++){
271 float kHz=p[is].kHz[i]*(1.-ds)+p[is+1].kHz[i]*ds;
272 g->coupling_pointlimit[0][i]=kHz*1000./vi->rate*ci->blocksizes[0];
273 g->coupling_pointlimit[1][i]=kHz*1000./vi->rate*ci->blocksizes[1];
274 g->coupling_pkHz[i]=kHz;
276 kHz=p[is].lowpasskHz[i]*(1.-ds)+p[is+1].lowpasskHz[i]*ds;
277 g->sliding_lowpass[0][i]=kHz*1000./vi->rate*ci->blocksizes[0];
278 g->sliding_lowpass[1][i]=kHz*1000./vi->rate*ci->blocksizes[1];
280 }
281 }else{
282 float kHz=p[is].kHz[PACKETBLOBS/2]*(1.-ds)+p[is+1].kHz[PACKETBLOBS/2]*ds;
283 for(i=0;i<PACKETBLOBS;i++){
284 g->coupling_pointlimit[0][i]=kHz*1000./vi->rate*ci->blocksizes[0];
285 g->coupling_pointlimit[1][i]=kHz*1000./vi->rate*ci->blocksizes[1];
286 g->coupling_pkHz[i]=kHz;
287 }
289 kHz=p[is].lowpasskHz[PACKETBLOBS/2]*(1.-ds)+p[is+1].lowpasskHz[PACKETBLOBS/2]*ds;
290 for(i=0;i<PACKETBLOBS;i++){
291 g->sliding_lowpass[0][i]=kHz*1000./vi->rate*ci->blocksizes[0];
292 g->sliding_lowpass[1][i]=kHz*1000./vi->rate*ci->blocksizes[1];
293 }
294 }
295 }else{
296 for(i=0;i<PACKETBLOBS;i++){
297 g->sliding_lowpass[0][i]=ci->blocksizes[0];
298 g->sliding_lowpass[1][i]=ci->blocksizes[1];
299 }
300 }
301 return;
302 }
304 static void vorbis_encode_psyset_setup(vorbis_info *vi,double s,
305 const int *nn_start,
306 const int *nn_partition,
307 const double *nn_thresh,
308 int block){
309 codec_setup_info *ci=vi->codec_setup;
310 vorbis_info_psy *p=ci->psy_param[block];
311 highlevel_encode_setup *hi=&ci->hi;
312 int is=s;
314 if(block>=ci->psys)
315 ci->psys=block+1;
316 if(!p){
317 p=_ogg_calloc(1,sizeof(*p));
318 ci->psy_param[block]=p;
319 }
321 memcpy(p,&_psy_info_template,sizeof(*p));
322 p->blockflag=block>>1;
324 if(hi->noise_normalize_p){
325 p->normal_p=1;
326 p->normal_start=nn_start[is];
327 p->normal_partition=nn_partition[is];
328 p->normal_thresh=nn_thresh[is];
329 }
331 return;
332 }
334 static void vorbis_encode_tonemask_setup(vorbis_info *vi,double s,int block,
335 const att3 *att,
336 const int *max,
337 const vp_adjblock *in){
338 int i,is=s;
339 double ds=s-is;
340 codec_setup_info *ci=vi->codec_setup;
341 vorbis_info_psy *p=ci->psy_param[block];
343 /* 0 and 2 are only used by bitmanagement, but there's no harm to always
344 filling the values in here */
345 p->tone_masteratt[0]=att[is].att[0]*(1.-ds)+att[is+1].att[0]*ds;
346 p->tone_masteratt[1]=att[is].att[1]*(1.-ds)+att[is+1].att[1]*ds;
347 p->tone_masteratt[2]=att[is].att[2]*(1.-ds)+att[is+1].att[2]*ds;
348 p->tone_centerboost=att[is].boost*(1.-ds)+att[is+1].boost*ds;
349 p->tone_decay=att[is].decay*(1.-ds)+att[is+1].decay*ds;
351 p->max_curve_dB=max[is]*(1.-ds)+max[is+1]*ds;
353 for(i=0;i<P_BANDS;i++)
354 p->toneatt[i]=in[is].block[i]*(1.-ds)+in[is+1].block[i]*ds;
355 return;
356 }
359 static void vorbis_encode_compand_setup(vorbis_info *vi,double s,int block,
360 const compandblock *in,
361 const double *x){
362 int i,is=s;
363 double ds=s-is;
364 codec_setup_info *ci=vi->codec_setup;
365 vorbis_info_psy *p=ci->psy_param[block];
367 ds=x[is]*(1.-ds)+x[is+1]*ds;
368 is=(int)ds;
369 ds-=is;
370 if(ds==0 && is>0){
371 is--;
372 ds=1.;
373 }
375 /* interpolate the compander settings */
376 for(i=0;i<NOISE_COMPAND_LEVELS;i++)
377 p->noisecompand[i]=in[is].data[i]*(1.-ds)+in[is+1].data[i]*ds;
378 return;
379 }
381 static void vorbis_encode_peak_setup(vorbis_info *vi,double s,int block,
382 const int *suppress){
383 int is=s;
384 double ds=s-is;
385 codec_setup_info *ci=vi->codec_setup;
386 vorbis_info_psy *p=ci->psy_param[block];
388 p->tone_abs_limit=suppress[is]*(1.-ds)+suppress[is+1]*ds;
390 return;
391 }
393 static void vorbis_encode_noisebias_setup(vorbis_info *vi,double s,int block,
394 const int *suppress,
395 const noise3 *in,
396 const noiseguard *guard,
397 double userbias){
398 int i,is=s,j;
399 double ds=s-is;
400 codec_setup_info *ci=vi->codec_setup;
401 vorbis_info_psy *p=ci->psy_param[block];
403 p->noisemaxsupp=suppress[is]*(1.-ds)+suppress[is+1]*ds;
404 p->noisewindowlomin=guard[block].lo;
405 p->noisewindowhimin=guard[block].hi;
406 p->noisewindowfixed=guard[block].fixed;
408 for(j=0;j<P_NOISECURVES;j++)
409 for(i=0;i<P_BANDS;i++)
410 p->noiseoff[j][i]=in[is].data[j][i]*(1.-ds)+in[is+1].data[j][i]*ds;
412 /* impulse blocks may take a user specified bias to boost the
413 nominal/high noise encoding depth */
414 for(j=0;j<P_NOISECURVES;j++){
415 float min=p->noiseoff[j][0]+6; /* the lowest it can go */
416 for(i=0;i<P_BANDS;i++){
417 p->noiseoff[j][i]+=userbias;
418 if(p->noiseoff[j][i]<min)p->noiseoff[j][i]=min;
419 }
420 }
422 return;
423 }
425 static void vorbis_encode_ath_setup(vorbis_info *vi,int block){
426 codec_setup_info *ci=vi->codec_setup;
427 vorbis_info_psy *p=ci->psy_param[block];
429 p->ath_adjatt=ci->hi.ath_floating_dB;
430 p->ath_maxatt=ci->hi.ath_absolute_dB;
431 return;
432 }
435 static int book_dup_or_new(codec_setup_info *ci,const static_codebook *book){
436 int i;
437 for(i=0;i<ci->books;i++)
438 if(ci->book_param[i]==book)return(i);
440 return(ci->books++);
441 }
443 static void vorbis_encode_blocksize_setup(vorbis_info *vi,double s,
444 const int *shortb,const int *longb){
446 codec_setup_info *ci=vi->codec_setup;
447 int is=s;
449 int blockshort=shortb[is];
450 int blocklong=longb[is];
451 ci->blocksizes[0]=blockshort;
452 ci->blocksizes[1]=blocklong;
454 }
456 static void vorbis_encode_residue_setup(vorbis_info *vi,
457 int number, int block,
458 const vorbis_residue_template *res){
460 codec_setup_info *ci=vi->codec_setup;
461 int i;
463 vorbis_info_residue0 *r=ci->residue_param[number]=
464 _ogg_malloc(sizeof(*r));
466 memcpy(r,res->res,sizeof(*r));
467 if(ci->residues<=number)ci->residues=number+1;
469 r->grouping=res->grouping;
470 ci->residue_type[number]=res->res_type;
472 /* fill in all the books */
473 {
474 int booklist=0,k;
476 if(ci->hi.managed){
477 for(i=0;i<r->partitions;i++)
478 for(k=0;k<4;k++)
479 if(res->books_base_managed->books[i][k])
480 r->secondstages[i]|=(1<<k);
482 r->groupbook=book_dup_or_new(ci,res->book_aux_managed);
483 ci->book_param[r->groupbook]=(static_codebook *)res->book_aux_managed;
485 for(i=0;i<r->partitions;i++){
486 for(k=0;k<4;k++){
487 if(res->books_base_managed->books[i][k]){
488 int bookid=book_dup_or_new(ci,res->books_base_managed->books[i][k]);
489 r->booklist[booklist++]=bookid;
490 ci->book_param[bookid]=(static_codebook *)res->books_base_managed->books[i][k];
491 }
492 }
493 }
495 }else{
497 for(i=0;i<r->partitions;i++)
498 for(k=0;k<4;k++)
499 if(res->books_base->books[i][k])
500 r->secondstages[i]|=(1<<k);
502 r->groupbook=book_dup_or_new(ci,res->book_aux);
503 ci->book_param[r->groupbook]=(static_codebook *)res->book_aux;
505 for(i=0;i<r->partitions;i++){
506 for(k=0;k<4;k++){
507 if(res->books_base->books[i][k]){
508 int bookid=book_dup_or_new(ci,res->books_base->books[i][k]);
509 r->booklist[booklist++]=bookid;
510 ci->book_param[bookid]=(static_codebook *)res->books_base->books[i][k];
511 }
512 }
513 }
514 }
515 }
517 /* lowpass setup/pointlimit */
518 {
519 double freq=ci->hi.lowpass_kHz*1000.;
520 vorbis_info_floor1 *f=ci->floor_param[block]; /* by convention */
521 double nyq=vi->rate/2.;
522 long blocksize=ci->blocksizes[block]>>1;
524 /* lowpass needs to be set in the floor and the residue. */
525 if(freq>nyq)freq=nyq;
526 /* in the floor, the granularity can be very fine; it doesn't alter
527 the encoding structure, only the samples used to fit the floor
528 approximation */
529 f->n=freq/nyq*blocksize;
531 /* this res may by limited by the maximum pointlimit of the mode,
532 not the lowpass. the floor is always lowpass limited. */
533 switch(res->limit_type){
534 case 1: /* point stereo limited */
535 if(ci->hi.managed)
536 freq=ci->psy_g_param.coupling_pkHz[PACKETBLOBS-1]*1000.;
537 else
538 freq=ci->psy_g_param.coupling_pkHz[PACKETBLOBS/2]*1000.;
539 if(freq>nyq)freq=nyq;
540 break;
541 case 2: /* LFE channel; lowpass at ~ 250Hz */
542 freq=250;
543 break;
544 default:
545 /* already set */
546 break;
547 }
549 /* in the residue, we're constrained, physically, by partition
550 boundaries. We still lowpass 'wherever', but we have to round up
551 here to next boundary, or the vorbis spec will round it *down* to
552 previous boundary in encode/decode */
553 if(ci->residue_type[number]==2){
554 /* residue 2 bundles together multiple channels; used by stereo
555 and surround. Count the channels in use */
556 /* Multiple maps/submaps can point to the same residue. In the case
557 of residue 2, they all better have the same number of
558 channels/samples. */
559 int j,k,ch=0;
560 for(i=0;i<ci->maps&&ch==0;i++){
561 vorbis_info_mapping0 *mi=(vorbis_info_mapping0 *)ci->map_param[i];
562 for(j=0;j<mi->submaps && ch==0;j++)
563 if(mi->residuesubmap[j]==number) /* we found a submap referencing theis residue backend */
564 for(k=0;k<vi->channels;k++)
565 if(mi->chmuxlist[k]==j) /* this channel belongs to the submap */
566 ch++;
567 }
569 r->end=(int)((freq/nyq*blocksize*ch)/r->grouping+.9)* /* round up only if we're well past */
570 r->grouping;
571 /* the blocksize and grouping may disagree at the end */
572 if(r->end>blocksize*ch)r->end=blocksize*ch/r->grouping*r->grouping;
574 }else{
576 r->end=(int)((freq/nyq*blocksize)/r->grouping+.9)* /* round up only if we're well past */
577 r->grouping;
578 /* the blocksize and grouping may disagree at the end */
579 if(r->end>blocksize)r->end=blocksize/r->grouping*r->grouping;
581 }
583 if(r->end==0)r->end=r->grouping; /* LFE channel */
585 }
586 }
588 /* we assume two maps in this encoder */
589 static void vorbis_encode_map_n_res_setup(vorbis_info *vi,double s,
590 const vorbis_mapping_template *maps){
592 codec_setup_info *ci=vi->codec_setup;
593 int i,j,is=s,modes=2;
594 const vorbis_info_mapping0 *map=maps[is].map;
595 const vorbis_info_mode *mode=_mode_template;
596 const vorbis_residue_template *res=maps[is].res;
598 if(ci->blocksizes[0]==ci->blocksizes[1])modes=1;
600 for(i=0;i<modes;i++){
602 ci->map_param[i]=_ogg_calloc(1,sizeof(*map));
603 ci->mode_param[i]=_ogg_calloc(1,sizeof(*mode));
605 memcpy(ci->mode_param[i],mode+i,sizeof(*_mode_template));
606 if(i>=ci->modes)ci->modes=i+1;
608 ci->map_type[i]=0;
609 memcpy(ci->map_param[i],map+i,sizeof(*map));
610 if(i>=ci->maps)ci->maps=i+1;
612 for(j=0;j<map[i].submaps;j++)
613 vorbis_encode_residue_setup(vi,map[i].residuesubmap[j],i
614 ,res+map[i].residuesubmap[j]);
615 }
616 }
618 static double setting_to_approx_bitrate(vorbis_info *vi){
619 codec_setup_info *ci=vi->codec_setup;
620 highlevel_encode_setup *hi=&ci->hi;
621 ve_setup_data_template *setup=(ve_setup_data_template *)hi->setup;
622 int is=hi->base_setting;
623 double ds=hi->base_setting-is;
624 int ch=vi->channels;
625 const double *r=setup->rate_mapping;
627 if(r==NULL)
628 return(-1);
630 return((r[is]*(1.-ds)+r[is+1]*ds)*ch);
631 }
633 static const void *get_setup_template(long ch,long srate,
634 double req,int q_or_bitrate,
635 double *base_setting){
636 int i=0,j;
637 if(q_or_bitrate)req/=ch;
639 while(setup_list[i]){
640 if(setup_list[i]->coupling_restriction==-1 ||
641 setup_list[i]->coupling_restriction==ch){
642 if(srate>=setup_list[i]->samplerate_min_restriction &&
643 srate<=setup_list[i]->samplerate_max_restriction){
644 int mappings=setup_list[i]->mappings;
645 const double *map=(q_or_bitrate?
646 setup_list[i]->rate_mapping:
647 setup_list[i]->quality_mapping);
649 /* the template matches. Does the requested quality mode
650 fall within this template's modes? */
651 if(req<map[0]){++i;continue;}
652 if(req>map[setup_list[i]->mappings]){++i;continue;}
653 for(j=0;j<mappings;j++)
654 if(req>=map[j] && req<map[j+1])break;
655 /* an all-points match */
656 if(j==mappings)
657 *base_setting=j-.001;
658 else{
659 float low=map[j];
660 float high=map[j+1];
661 float del=(req-low)/(high-low);
662 *base_setting=j+del;
663 }
665 return(setup_list[i]);
666 }
667 }
668 i++;
669 }
671 return NULL;
672 }
674 /* encoders will need to use vorbis_info_init beforehand and call
675 vorbis_info clear when all done */
677 /* two interfaces; this, more detailed one, and later a convenience
678 layer on top */
680 /* the final setup call */
681 int vorbis_encode_setup_init(vorbis_info *vi){
682 int i,i0=0,singleblock=0;
683 codec_setup_info *ci=vi->codec_setup;
684 ve_setup_data_template *setup=NULL;
685 highlevel_encode_setup *hi=&ci->hi;
687 if(ci==NULL)return(OV_EINVAL);
688 if(!hi->impulse_block_p)i0=1;
690 /* too low/high an ATH floater is nonsensical, but doesn't break anything */
691 if(hi->ath_floating_dB>-80)hi->ath_floating_dB=-80;
692 if(hi->ath_floating_dB<-200)hi->ath_floating_dB=-200;
694 /* again, bound this to avoid the app shooting itself int he foot
695 too badly */
696 if(hi->amplitude_track_dBpersec>0.)hi->amplitude_track_dBpersec=0.;
697 if(hi->amplitude_track_dBpersec<-99999.)hi->amplitude_track_dBpersec=-99999.;
699 /* get the appropriate setup template; matches the fetch in previous
700 stages */
701 setup=(ve_setup_data_template *)hi->setup;
702 if(setup==NULL)return(OV_EINVAL);
704 hi->set_in_stone=1;
705 /* choose block sizes from configured sizes as well as paying
706 attention to long_block_p and short_block_p. If the configured
707 short and long blocks are the same length, we set long_block_p
708 and unset short_block_p */
709 vorbis_encode_blocksize_setup(vi,hi->base_setting,
710 setup->blocksize_short,
711 setup->blocksize_long);
712 if(ci->blocksizes[0]==ci->blocksizes[1])singleblock=1;
714 /* floor setup; choose proper floor params. Allocated on the floor
715 stack in order; if we alloc only a single long floor, it's 0 */
716 for(i=0;i<setup->floor_mappings;i++)
717 vorbis_encode_floor_setup(vi,hi->base_setting,
718 setup->floor_books,
719 setup->floor_params,
720 setup->floor_mapping_list[i]);
722 /* setup of [mostly] short block detection and stereo*/
723 vorbis_encode_global_psych_setup(vi,hi->trigger_setting,
724 setup->global_params,
725 setup->global_mapping);
726 vorbis_encode_global_stereo(vi,hi,setup->stereo_modes);
728 /* basic psych setup and noise normalization */
729 vorbis_encode_psyset_setup(vi,hi->base_setting,
730 setup->psy_noise_normal_start[0],
731 setup->psy_noise_normal_partition[0],
732 setup->psy_noise_normal_thresh,
733 0);
734 vorbis_encode_psyset_setup(vi,hi->base_setting,
735 setup->psy_noise_normal_start[0],
736 setup->psy_noise_normal_partition[0],
737 setup->psy_noise_normal_thresh,
738 1);
739 if(!singleblock){
740 vorbis_encode_psyset_setup(vi,hi->base_setting,
741 setup->psy_noise_normal_start[1],
742 setup->psy_noise_normal_partition[1],
743 setup->psy_noise_normal_thresh,
744 2);
745 vorbis_encode_psyset_setup(vi,hi->base_setting,
746 setup->psy_noise_normal_start[1],
747 setup->psy_noise_normal_partition[1],
748 setup->psy_noise_normal_thresh,
749 3);
750 }
752 /* tone masking setup */
753 vorbis_encode_tonemask_setup(vi,hi->block[i0].tone_mask_setting,0,
754 setup->psy_tone_masteratt,
755 setup->psy_tone_0dB,
756 setup->psy_tone_adj_impulse);
757 vorbis_encode_tonemask_setup(vi,hi->block[1].tone_mask_setting,1,
758 setup->psy_tone_masteratt,
759 setup->psy_tone_0dB,
760 setup->psy_tone_adj_other);
761 if(!singleblock){
762 vorbis_encode_tonemask_setup(vi,hi->block[2].tone_mask_setting,2,
763 setup->psy_tone_masteratt,
764 setup->psy_tone_0dB,
765 setup->psy_tone_adj_other);
766 vorbis_encode_tonemask_setup(vi,hi->block[3].tone_mask_setting,3,
767 setup->psy_tone_masteratt,
768 setup->psy_tone_0dB,
769 setup->psy_tone_adj_long);
770 }
772 /* noise companding setup */
773 vorbis_encode_compand_setup(vi,hi->block[i0].noise_compand_setting,0,
774 setup->psy_noise_compand,
775 setup->psy_noise_compand_short_mapping);
776 vorbis_encode_compand_setup(vi,hi->block[1].noise_compand_setting,1,
777 setup->psy_noise_compand,
778 setup->psy_noise_compand_short_mapping);
779 if(!singleblock){
780 vorbis_encode_compand_setup(vi,hi->block[2].noise_compand_setting,2,
781 setup->psy_noise_compand,
782 setup->psy_noise_compand_long_mapping);
783 vorbis_encode_compand_setup(vi,hi->block[3].noise_compand_setting,3,
784 setup->psy_noise_compand,
785 setup->psy_noise_compand_long_mapping);
786 }
788 /* peak guarding setup */
789 vorbis_encode_peak_setup(vi,hi->block[i0].tone_peaklimit_setting,0,
790 setup->psy_tone_dBsuppress);
791 vorbis_encode_peak_setup(vi,hi->block[1].tone_peaklimit_setting,1,
792 setup->psy_tone_dBsuppress);
793 if(!singleblock){
794 vorbis_encode_peak_setup(vi,hi->block[2].tone_peaklimit_setting,2,
795 setup->psy_tone_dBsuppress);
796 vorbis_encode_peak_setup(vi,hi->block[3].tone_peaklimit_setting,3,
797 setup->psy_tone_dBsuppress);
798 }
800 /* noise bias setup */
801 vorbis_encode_noisebias_setup(vi,hi->block[i0].noise_bias_setting,0,
802 setup->psy_noise_dBsuppress,
803 setup->psy_noise_bias_impulse,
804 setup->psy_noiseguards,
805 (i0==0?hi->impulse_noisetune:0.));
806 vorbis_encode_noisebias_setup(vi,hi->block[1].noise_bias_setting,1,
807 setup->psy_noise_dBsuppress,
808 setup->psy_noise_bias_padding,
809 setup->psy_noiseguards,0.);
810 if(!singleblock){
811 vorbis_encode_noisebias_setup(vi,hi->block[2].noise_bias_setting,2,
812 setup->psy_noise_dBsuppress,
813 setup->psy_noise_bias_trans,
814 setup->psy_noiseguards,0.);
815 vorbis_encode_noisebias_setup(vi,hi->block[3].noise_bias_setting,3,
816 setup->psy_noise_dBsuppress,
817 setup->psy_noise_bias_long,
818 setup->psy_noiseguards,0.);
819 }
821 vorbis_encode_ath_setup(vi,0);
822 vorbis_encode_ath_setup(vi,1);
823 if(!singleblock){
824 vorbis_encode_ath_setup(vi,2);
825 vorbis_encode_ath_setup(vi,3);
826 }
828 vorbis_encode_map_n_res_setup(vi,hi->base_setting,setup->maps);
830 /* set bitrate readonlies and management */
831 if(hi->bitrate_av>0)
832 vi->bitrate_nominal=hi->bitrate_av;
833 else{
834 vi->bitrate_nominal=setting_to_approx_bitrate(vi);
835 }
837 vi->bitrate_lower=hi->bitrate_min;
838 vi->bitrate_upper=hi->bitrate_max;
839 if(hi->bitrate_av)
840 vi->bitrate_window=(double)hi->bitrate_reservoir/hi->bitrate_av;
841 else
842 vi->bitrate_window=0.;
844 if(hi->managed){
845 ci->bi.avg_rate=hi->bitrate_av;
846 ci->bi.min_rate=hi->bitrate_min;
847 ci->bi.max_rate=hi->bitrate_max;
849 ci->bi.reservoir_bits=hi->bitrate_reservoir;
850 ci->bi.reservoir_bias=
851 hi->bitrate_reservoir_bias;
853 ci->bi.slew_damp=hi->bitrate_av_damp;
855 }
857 return(0);
859 }
861 static void vorbis_encode_setup_setting(vorbis_info *vi,
862 long channels,
863 long rate){
864 int i,is;
865 codec_setup_info *ci=vi->codec_setup;
866 highlevel_encode_setup *hi=&ci->hi;
867 const ve_setup_data_template *setup=hi->setup;
868 double ds;
870 vi->version=0;
871 vi->channels=channels;
872 vi->rate=rate;
874 hi->impulse_block_p=1;
875 hi->noise_normalize_p=1;
877 is=hi->base_setting;
878 ds=hi->base_setting-is;
880 hi->stereo_point_setting=hi->base_setting;
882 if(!hi->lowpass_altered)
883 hi->lowpass_kHz=
884 setup->psy_lowpass[is]*(1.-ds)+setup->psy_lowpass[is+1]*ds;
886 hi->ath_floating_dB=setup->psy_ath_float[is]*(1.-ds)+
887 setup->psy_ath_float[is+1]*ds;
888 hi->ath_absolute_dB=setup->psy_ath_abs[is]*(1.-ds)+
889 setup->psy_ath_abs[is+1]*ds;
891 hi->amplitude_track_dBpersec=-6.;
892 hi->trigger_setting=hi->base_setting;
894 for(i=0;i<4;i++){
895 hi->block[i].tone_mask_setting=hi->base_setting;
896 hi->block[i].tone_peaklimit_setting=hi->base_setting;
897 hi->block[i].noise_bias_setting=hi->base_setting;
898 hi->block[i].noise_compand_setting=hi->base_setting;
899 }
900 }
902 int vorbis_encode_setup_vbr(vorbis_info *vi,
903 long channels,
904 long rate,
905 float quality){
906 codec_setup_info *ci=vi->codec_setup;
907 highlevel_encode_setup *hi=&ci->hi;
909 quality+=.0000001;
910 if(quality>=1.)quality=.9999;
912 hi->req=quality;
913 hi->setup=get_setup_template(channels,rate,quality,0,&hi->base_setting);
914 if(!hi->setup)return OV_EIMPL;
916 vorbis_encode_setup_setting(vi,channels,rate);
917 hi->managed=0;
918 hi->coupling_p=1;
920 return 0;
921 }
923 int vorbis_encode_init_vbr(vorbis_info *vi,
924 long channels,
925 long rate,
927 float base_quality /* 0. to 1. */
928 ){
929 int ret=0;
931 ret=vorbis_encode_setup_vbr(vi,channels,rate,base_quality);
933 if(ret){
934 vorbis_info_clear(vi);
935 return ret;
936 }
937 ret=vorbis_encode_setup_init(vi);
938 if(ret)
939 vorbis_info_clear(vi);
940 return(ret);
941 }
943 int vorbis_encode_setup_managed(vorbis_info *vi,
944 long channels,
945 long rate,
947 long max_bitrate,
948 long nominal_bitrate,
949 long min_bitrate){
951 codec_setup_info *ci=vi->codec_setup;
952 highlevel_encode_setup *hi=&ci->hi;
953 double tnominal=nominal_bitrate;
955 if(nominal_bitrate<=0.){
956 if(max_bitrate>0.){
957 if(min_bitrate>0.)
958 nominal_bitrate=(max_bitrate+min_bitrate)*.5;
959 else
960 nominal_bitrate=max_bitrate*.875;
961 }else{
962 if(min_bitrate>0.){
963 nominal_bitrate=min_bitrate;
964 }else{
965 return(OV_EINVAL);
966 }
967 }
968 }
970 hi->req=nominal_bitrate;
971 hi->setup=get_setup_template(channels,rate,nominal_bitrate,1,&hi->base_setting);
972 if(!hi->setup)return OV_EIMPL;
974 vorbis_encode_setup_setting(vi,channels,rate);
976 /* initialize management with sane defaults */
977 hi->coupling_p=1;
978 hi->managed=1;
979 hi->bitrate_min=min_bitrate;
980 hi->bitrate_max=max_bitrate;
981 hi->bitrate_av=tnominal;
982 hi->bitrate_av_damp=1.5f; /* full range in no less than 1.5 second */
983 hi->bitrate_reservoir=nominal_bitrate*2;
984 hi->bitrate_reservoir_bias=.1; /* bias toward hoarding bits */
986 return(0);
988 }
990 int vorbis_encode_init(vorbis_info *vi,
991 long channels,
992 long rate,
994 long max_bitrate,
995 long nominal_bitrate,
996 long min_bitrate){
998 int ret=vorbis_encode_setup_managed(vi,channels,rate,
999 max_bitrate,
1000 nominal_bitrate,
1001 min_bitrate);
1002 if(ret){
1003 vorbis_info_clear(vi);
1004 return(ret);
1005 }
1007 ret=vorbis_encode_setup_init(vi);
1008 if(ret)
1009 vorbis_info_clear(vi);
1010 return(ret);
1011 }
1013 int vorbis_encode_ctl(vorbis_info *vi,int number,void *arg){
1014 if(vi){
1015 codec_setup_info *ci=vi->codec_setup;
1016 highlevel_encode_setup *hi=&ci->hi;
1017 int setp=(number&0xf); /* a read request has a low nibble of 0 */
1019 if(setp && hi->set_in_stone)return(OV_EINVAL);
1021 switch(number){
1023 /* now deprecated *****************/
1024 case OV_ECTL_RATEMANAGE_GET:
1025 {
1027 struct ovectl_ratemanage_arg *ai=
1028 (struct ovectl_ratemanage_arg *)arg;
1030 ai->management_active=hi->managed;
1031 ai->bitrate_hard_window=ai->bitrate_av_window=
1032 (double)hi->bitrate_reservoir/vi->rate;
1033 ai->bitrate_av_window_center=1.;
1034 ai->bitrate_hard_min=hi->bitrate_min;
1035 ai->bitrate_hard_max=hi->bitrate_max;
1036 ai->bitrate_av_lo=hi->bitrate_av;
1037 ai->bitrate_av_hi=hi->bitrate_av;
1039 }
1040 return(0);
1042 /* now deprecated *****************/
1043 case OV_ECTL_RATEMANAGE_SET:
1044 {
1045 struct ovectl_ratemanage_arg *ai=
1046 (struct ovectl_ratemanage_arg *)arg;
1047 if(ai==NULL){
1048 hi->managed=0;
1049 }else{
1050 hi->managed=ai->management_active;
1051 vorbis_encode_ctl(vi,OV_ECTL_RATEMANAGE_AVG,arg);
1052 vorbis_encode_ctl(vi,OV_ECTL_RATEMANAGE_HARD,arg);
1053 }
1054 }
1055 return 0;
1057 /* now deprecated *****************/
1058 case OV_ECTL_RATEMANAGE_AVG:
1059 {
1060 struct ovectl_ratemanage_arg *ai=
1061 (struct ovectl_ratemanage_arg *)arg;
1062 if(ai==NULL){
1063 hi->bitrate_av=0;
1064 }else{
1065 hi->bitrate_av=(ai->bitrate_av_lo+ai->bitrate_av_hi)*.5;
1066 }
1067 }
1068 return(0);
1069 /* now deprecated *****************/
1070 case OV_ECTL_RATEMANAGE_HARD:
1071 {
1072 struct ovectl_ratemanage_arg *ai=
1073 (struct ovectl_ratemanage_arg *)arg;
1074 if(ai==NULL){
1075 hi->bitrate_min=0;
1076 hi->bitrate_max=0;
1077 }else{
1078 hi->bitrate_min=ai->bitrate_hard_min;
1079 hi->bitrate_max=ai->bitrate_hard_max;
1080 hi->bitrate_reservoir=ai->bitrate_hard_window*
1081 (hi->bitrate_max+hi->bitrate_min)*.5;
1082 }
1083 if(hi->bitrate_reservoir<128.)
1084 hi->bitrate_reservoir=128.;
1085 }
1086 return(0);
1088 /* replacement ratemanage interface */
1089 case OV_ECTL_RATEMANAGE2_GET:
1090 {
1091 struct ovectl_ratemanage2_arg *ai=
1092 (struct ovectl_ratemanage2_arg *)arg;
1093 if(ai==NULL)return OV_EINVAL;
1095 ai->management_active=hi->managed;
1096 ai->bitrate_limit_min_kbps=hi->bitrate_min/1000;
1097 ai->bitrate_limit_max_kbps=hi->bitrate_max/1000;
1098 ai->bitrate_average_kbps=hi->bitrate_av/1000;
1099 ai->bitrate_average_damping=hi->bitrate_av_damp;
1100 ai->bitrate_limit_reservoir_bits=hi->bitrate_reservoir;
1101 ai->bitrate_limit_reservoir_bias=hi->bitrate_reservoir_bias;
1102 }
1103 return (0);
1104 case OV_ECTL_RATEMANAGE2_SET:
1105 {
1106 struct ovectl_ratemanage2_arg *ai=
1107 (struct ovectl_ratemanage2_arg *)arg;
1108 if(ai==NULL){
1109 hi->managed=0;
1110 }else{
1111 /* sanity check; only catch invariant violations */
1112 if(ai->bitrate_limit_min_kbps>0 &&
1113 ai->bitrate_average_kbps>0 &&
1114 ai->bitrate_limit_min_kbps>ai->bitrate_average_kbps)
1115 return OV_EINVAL;
1117 if(ai->bitrate_limit_max_kbps>0 &&
1118 ai->bitrate_average_kbps>0 &&
1119 ai->bitrate_limit_max_kbps<ai->bitrate_average_kbps)
1120 return OV_EINVAL;
1122 if(ai->bitrate_limit_min_kbps>0 &&
1123 ai->bitrate_limit_max_kbps>0 &&
1124 ai->bitrate_limit_min_kbps>ai->bitrate_limit_max_kbps)
1125 return OV_EINVAL;
1127 if(ai->bitrate_average_damping <= 0.)
1128 return OV_EINVAL;
1130 if(ai->bitrate_limit_reservoir_bits < 0)
1131 return OV_EINVAL;
1133 if(ai->bitrate_limit_reservoir_bias < 0.)
1134 return OV_EINVAL;
1136 if(ai->bitrate_limit_reservoir_bias > 1.)
1137 return OV_EINVAL;
1139 hi->managed=ai->management_active;
1140 hi->bitrate_min=ai->bitrate_limit_min_kbps * 1000;
1141 hi->bitrate_max=ai->bitrate_limit_max_kbps * 1000;
1142 hi->bitrate_av=ai->bitrate_average_kbps * 1000;
1143 hi->bitrate_av_damp=ai->bitrate_average_damping;
1144 hi->bitrate_reservoir=ai->bitrate_limit_reservoir_bits;
1145 hi->bitrate_reservoir_bias=ai->bitrate_limit_reservoir_bias;
1146 }
1147 }
1148 return 0;
1150 case OV_ECTL_LOWPASS_GET:
1151 {
1152 double *farg=(double *)arg;
1153 *farg=hi->lowpass_kHz;
1154 }
1155 return(0);
1156 case OV_ECTL_LOWPASS_SET:
1157 {
1158 double *farg=(double *)arg;
1159 hi->lowpass_kHz=*farg;
1161 if(hi->lowpass_kHz<2.)hi->lowpass_kHz=2.;
1162 if(hi->lowpass_kHz>99.)hi->lowpass_kHz=99.;
1163 hi->lowpass_altered=1;
1164 }
1165 return(0);
1166 case OV_ECTL_IBLOCK_GET:
1167 {
1168 double *farg=(double *)arg;
1169 *farg=hi->impulse_noisetune;
1170 }
1171 return(0);
1172 case OV_ECTL_IBLOCK_SET:
1173 {
1174 double *farg=(double *)arg;
1175 hi->impulse_noisetune=*farg;
1177 if(hi->impulse_noisetune>0.)hi->impulse_noisetune=0.;
1178 if(hi->impulse_noisetune<-15.)hi->impulse_noisetune=-15.;
1179 }
1180 return(0);
1181 case OV_ECTL_COUPLING_GET:
1182 {
1183 int *iarg=(int *)arg;
1184 *iarg=hi->coupling_p;
1185 }
1186 return(0);
1187 case OV_ECTL_COUPLING_SET:
1188 {
1189 const void *new_template;
1190 double new_base=0.;
1191 int *iarg=(int *)arg;
1192 hi->coupling_p=((*iarg)!=0);
1194 /* Fetching a new template can alter the base_setting, which
1195 many other parameters are based on. Right now, the only
1196 parameter drawn from the base_setting that can be altered
1197 by an encctl is the lowpass, so that is explictly flagged
1198 to not be overwritten when we fetch a new template and
1199 recompute the dependant settings */
1200 new_template = get_setup_template(hi->coupling_p?vi->channels:-1,
1201 vi->rate,
1202 hi->req,
1203 hi->managed,
1204 &new_base);
1205 if(!hi->setup)return OV_EIMPL;
1206 hi->setup=new_template;
1207 hi->base_setting=new_base;
1208 vorbis_encode_setup_setting(vi,vi->channels,vi->rate);
1209 }
1210 return(0);
1211 }
1212 return(OV_EIMPL);
1213 }
1214 return(OV_EINVAL);
1215 }