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 1994-2007 * 9 * by the Xiph.Org Foundation http://www.xiph.org/ * 10 * * 11 ******************************************************************** 12 13 function: simple utility that runs audio through the psychoacoustics 14 without encoding 15 last mod: $Id: psytune.c 16037 2009-05-26 21:10:58Z xiphmont $ 16 17 ********************************************************************/ 18 19 /* NB: this is dead code, retained purely for doc and reference value 20 don't try to compile it */ 21 22 #include <stdio.h> 23 #include <stdlib.h> 24 #include <string.h> 25 #include <math.h> 26 27 #include "vorbis/codec.h" 28 #include "codec_internal.h" 29 #include "os.h" 30 #include "misc.h" 31 #include "psy.h" 32 #include "mdct.h" 33 #include "smallft.h" 34 #include "window.h" 35 #include "scales.h" 36 #include "lpc.h" 37 #include "lsp.h" 38 #include "masking.h" 39 #include "registry.h" 40 41 static vorbis_info_psy_global _psy_set0G={ 42 0, /* decaydBpms */ 43 8, /* lines per eighth octave */ 44 45 /* thresh sample period, preecho clamp trigger threshhold, range, minenergy */ 46 256, {26.f,26.f,26.f,30.f}, {-90.f,-90.f,-90.f,-90.f}, -90.f, 47 -6.f, 48 49 0, 50 51 0., 52 0., 53 }; 54 55 static vp_part _vp_part0[]={ 56 { 1,9e10f, 9e10f, 1.f,9999.f}, 57 { 9999, .75f, 9e10f, .5f,9999.f}, 58 /*{ 9999, 1.5f, 9e10f, .5f,9999.f},*/ 59 { 18,9e10f, 9e10f, .5f, 30.f}, 60 { 9999,9e10f, 9e10f, .5f, 30.f} 61 }; 62 63 static vp_couple _vp_couple0[]={ 64 { 1, {9e10f,9e10f,0}, { 0.f, 0.f,0}, { 0.f, 0.f,0}, {0.f,0.f,0}}, 65 { 18, {9e10f,9e10f,0}, { 0.f, 0.f,0}, { 0.f, 0.f,0}, {0.f,0.f,0}}, 66 { 9999, {9e10f,9e10f,0}, { 0.f, 9e10f,0}, { 0.f,22.f,1}, {0.f,0.f,0}} 67 }; 68 69 static vorbis_info_psy _psy_set0={ 70 ATH_Bark_dB_lineaggressive, 71 72 -100.f, 73 -140.f, 74 6.f, /* floor master att */ 75 76 /* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 */ 77 /* x: 63 88 125 175 250 350 500 700 1k 1.4k 2k 2.8k 4k 5.6k 8k 11.5k 16k Hz */ 78 /* y: 0 10 20 30 40 50 60 70 80 90 100 dB */ 79 1, /* tonemaskp */ 80 0.f, /* tone master att */ 81 /* 0 10 20 30 40 50 60 70 80 90 100 */ 82 { 83 {-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f}, /*63*/ 84 {-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f}, /*88*/ 85 {-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f,-999.f}, /*125*/ 86 87 {-30.f,-30.f,-35.f,-40.f,-40.f,-50.f,-60.f,-70.f,-80.f,-90.f,-100.f}, /*175*/ 88 {-30.f,-30.f,-35.f,-40.f,-40.f,-50.f,-60.f,-70.f,-80.f,-90.f,-100.f}, /*250*/ 89 {-30.f,-30.f,-35.f,-40.f,-40.f,-50.f,-60.f,-70.f,-80.f,-90.f,-100.f}, /*350*/ 90 {-30.f,-30.f,-35.f,-40.f,-40.f,-50.f,-60.f,-70.f,-80.f,-90.f,-100.f}, /*500*/ 91 {-30.f,-30.f,-35.f,-40.f,-40.f,-50.f,-60.f,-70.f,-80.f,-90.f,-100.f}, /*700*/ 92 {-30.f,-30.f,-35.f,-40.f,-40.f,-50.f,-60.f,-70.f,-80.f,-90.f,-100.f}, /*1000*/ 93 {-30.f,-30.f,-35.f,-40.f,-40.f,-50.f,-60.f,-70.f,-80.f,-90.f,-100.f}, /*1400*/ 94 {-40.f,-40.f,-40.f,-40.f,-40.f,-50.f,-60.f,-70.f,-80.f,-90.f,-100.f}, /*2000*/ 95 {-40.f,-40.f,-40.f,-40.f,-40.f,-50.f,-60.f,-70.f,-80.f,-90.f,-100.f}, /*2800*/ 96 {-40.f,-40.f,-40.f,-40.f,-40.f,-50.f,-60.f,-70.f,-80.f,-90.f,-100.f}, /*4000*/ 97 98 {-30.f,-35.f,-35.f,-40.f,-40.f,-50.f,-60.f,-70.f,-80.f,-90.f,-100.f}, /*5600*/ 99 100 {-30.f,-30.f,-33.f,-35.f,-40.f,-50.f,-60.f,-70.f,-80.f,-90.f,-100.f}, /*8000*/ 101 {-30.f,-30.f,-33.f,-35.f,-40.f,-45.f,-50.f,-60.f,-70.f,-85.f,-100.f}, /*11500*/ 102 {-24.f,-24.f,-26.f,-32.f,-32.f,-42.f,-50.f,-60.f,-70.f,-85.f,-100.f}, /*16000*/ 103 104 }, 105 106 1,/* peakattp */ 107 {{-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*63*/ 108 {-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*88*/ 109 {-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*125*/ 110 {-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*175*/ 111 {-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*250*/ 112 {-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*350*/ 113 {-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*500*/ 114 {-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*700*/ 115 {-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*1000*/ 116 {-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*1400*/ 117 {-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*2000*/ 118 {-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*2800*/ 119 {-14.f,-20.f,-20.f,-20.f,-26.f,-32.f,-40.f,-40.f,-40.f,-40.f,-40.f},/*4000*/ 120 {-10.f,-12.f,-14.f,-16.f,-16.f,-20.f,-24.f,-30.f,-32.f,-40.f,-40.f},/*5600*/ 121 {-10.f,-12.f,-14.f,-16.f,-16.f,-20.f,-24.f,-30.f,-32.f,-40.f,-40.f},/*8000*/ 122 {-10.f,-10.f,-10.f,-12.f,-14.f,-18.f,-22.f,-28.f,-32.f,-40.f,-40.f},/*11500*/ 123 {-10.f,-10.f,-10.f,-12.f,-14.f,-18.f,-22.f,-28.f,-32.f,-40.f,-40.f},/*16000*/ 124 }, 125 126 1,/*noisemaskp */ 127 -10.f, /* suppress any noise curve over maxspec+n */ 128 .5f, /* low window */ 129 .5f, /* high window */ 130 10, 131 10, 132 25, 133 {.000f, 0.f, /*63*/ 134 .000f, 0.f, /*88*/ 135 .000f, 0.f, /*125*/ 136 .000f, 0.f, /*175*/ 137 .000f, 0.f, /*250*/ 138 .000f, 0.f, /*350*/ 139 .000f, 0.f, /*500*/ 140 .000f, 0.f, /*700*/ 141 .000f, 0.f, /*1000*/ 142 .300f, 0.f, /*1400*/ 143 .300f, 0.f, /*2000*/ 144 .300f, 0.f, /*2800*/ 145 .500f, 0.f, /*4000*/ 146 .700f, 0.f, /*5600*/ 147 .850f, 0.f, /*8000*/ 148 .900f, 0.f, /*11500*/ 149 .900f, 1.f, /*16000*/ 150 }, 151 152 95.f, /* even decade + 5 is important; saves an rint() later in a 153 tight loop) */ 154 -44., 155 156 32, 157 _vp_part0,_vp_couple0 158 }; 159 160 static vorbis_info_floor1 _floor_set0={1, 161 {0}, 162 163 {32}, 164 {0}, 165 {0}, 166 {{-1}}, 167 168 2, 169 {0,1024, 170 171 88,31,243, 172 173 14,54,143,460, 174 175 6,3,10, 22,18,26, 41,36,47, 176 69,61,78, 112,99,126, 185,162,211, 177 329,282,387, 672,553,825 178 }, 179 180 60,30,400, 181 20,8,1,18., 182 20,600, 183 960}; 184 185 186 static vorbis_info_mapping0 mapping_info={1,{0,1},{0},{0},{0},0, 1, {0},{1}}; 187 static codec_setup_info codec_setup0={ {0,0}, 188 1,1,1,1,1,0,1, 189 {NULL}, 190 {0},{&mapping_info}, 191 {0},{NULL}, 192 {1},{&_floor_set0}, 193 {2},{NULL}, 194 {NULL}, 195 {&_psy_set0}, 196 &_psy_set0G}; 197 198 static int noisy=0; 199 void analysis(char *base,int i,float *v,int n,int bark,int dB){ 200 if(noisy){ 201 int j; 202 FILE *of; 203 char buffer[80]; 204 sprintf(buffer,"%s_%d.m",base,i); 205 of=fopen(buffer,"w"); 206 207 for(j=0;j<n;j++){ 208 if(dB && v[j]==0) 209 fprintf(of,"\n\n"); 210 else{ 211 if(bark) 212 fprintf(of,"%g ",toBARK(22050.f*j/n)); 213 else 214 fprintf(of,"%g ",(float)j); 215 216 if(dB){ 217 fprintf(of,"%g\n",todB(v+j)); 218 }else{ 219 fprintf(of,"%g\n",v[j]); 220 } 221 } 222 } 223 fclose(of); 224 } 225 } 226 227 long frameno=0; 228 229 /****************************************************************/ 230 231 int main(int argc,char *argv[]){ 232 int eos=0; 233 float nonz=0.f; 234 float acc=0.f; 235 float tot=0.f; 236 float ampmax=-9999,newmax; 237 float local_ampmax[2]; 238 239 int framesize=2048; 240 float ampmax_att_per_sec=-6.; 241 242 float *pcm[2],*out[2],*window,*flr[2],*mask[2],*work[2]; 243 signed char *buffer,*buffer2; 244 mdct_lookup m_look; 245 drft_lookup f_look; 246 vorbis_look_psy p_look; 247 vorbis_look_psy_global *pg_look; 248 vorbis_look_floor *floor_look; 249 vorbis_info vi; 250 long i,j,k; 251 252 int ath=0; 253 int decayp=0; 254 255 argv++; 256 while(*argv){ 257 if(*argv[0]=='-'){ 258 /* option */ 259 if(argv[0][1]=='v'){ 260 noisy=0; 261 } 262 }else 263 if(*argv[0]=='+'){ 264 /* option */ 265 if(argv[0][1]=='v'){ 266 noisy=1; 267 } 268 }else 269 framesize=atoi(argv[0]); 270 argv++; 271 } 272 273 vi.channels=2; 274 vi.codec_setup=&codec_setup0; 275 276 pcm[0]=_ogg_malloc(framesize*sizeof(float)); 277 pcm[1]=_ogg_malloc(framesize*sizeof(float)); 278 out[0]=_ogg_calloc(framesize/2,sizeof(float)); 279 out[1]=_ogg_calloc(framesize/2,sizeof(float)); 280 work[0]=_ogg_calloc(framesize,sizeof(float)); 281 work[1]=_ogg_calloc(framesize,sizeof(float)); 282 flr[0]=_ogg_calloc(framesize/2,sizeof(float)); 283 flr[1]=_ogg_calloc(framesize/2,sizeof(float)); 284 buffer=_ogg_malloc(framesize*4); 285 buffer2=buffer+framesize*2; 286 window=_vorbis_window_create(0,framesize,framesize/2,framesize/2); 287 mdct_init(&m_look,framesize); 288 drft_init(&f_look,framesize); 289 _vp_psy_init(&p_look,&_psy_set0,&_psy_set0G,framesize/2,44100); 290 pg_look=_vp_global_look(&vi); 291 floor_look=_floor_P[1]->look(NULL,NULL,&_floor_set0); 292 293 /* we cheat on the WAV header; we just bypass 44 bytes and never 294 verify that it matches 16bit/stereo/44.1kHz. */ 295 296 fread(buffer,1,44,stdin); 297 fwrite(buffer,1,44,stdout); 298 memset(buffer,0,framesize*2); 299 300 analysis("window",0,window,framesize,0,0); 301 302 fprintf(stderr,"Processing for frame size %d...\n",framesize); 303 304 while(!eos){ 305 long bytes=fread(buffer2,1,framesize*2,stdin); 306 if(bytes<framesize*2) 307 memset(buffer2+bytes,0,framesize*2-bytes); 308 309 if(bytes!=0){ 310 int nonzero[2]; 311 312 /* uninterleave samples */ 313 for(i=0;i<framesize;i++){ 314 pcm[0][i]=((buffer[i*4+1]<<8)| 315 (0x00ff&(int)buffer[i*4]))/32768.f; 316 pcm[1][i]=((buffer[i*4+3]<<8)| 317 (0x00ff&(int)buffer[i*4+2]))/32768.f; 318 } 319 320 { 321 float secs=framesize/44100.; 322 323 ampmax+=secs*ampmax_att_per_sec; 324 if(ampmax<-9999)ampmax=-9999; 325 } 326 327 for(i=0;i<2;i++){ 328 float scale=4.f/framesize; 329 float *fft=work[i]; 330 float *mdct=pcm[i]; 331 float *logmdct=mdct+framesize/2; 332 333 analysis("pre",frameno+i,pcm[i],framesize,0,0); 334 335 /* fft and mdct transforms */ 336 for(j=0;j<framesize;j++) 337 fft[j]=pcm[i][j]*=window[j]; 338 339 drft_forward(&f_look,fft); 340 341 local_ampmax[i]=-9999.f; 342 fft[0]*=scale; 343 fft[0]=todB(fft); 344 for(j=1;j<framesize-1;j+=2){ 345 float temp=scale*FAST_HYPOT(fft[j],fft[j+1]); 346 temp=fft[(j+1)>>1]=todB(&temp); 347 if(temp>local_ampmax[i])local_ampmax[i]=temp; 348 } 349 if(local_ampmax[i]>ampmax)ampmax=local_ampmax[i]; 350 351 mdct_forward(&m_look,pcm[i],mdct); 352 for(j=0;j<framesize/2;j++) 353 logmdct[j]=todB(mdct+j); 354 355 analysis("mdct",frameno+i,logmdct,framesize/2,1,0); 356 analysis("fft",frameno+i,fft,framesize/2,1,0); 357 } 358 359 for(i=0;i<2;i++){ 360 float amp; 361 float *fft=work[i]; 362 float *logmax=fft; 363 float *mdct=pcm[i]; 364 float *logmdct=mdct+framesize/2; 365 float *mask=fft+framesize/2; 366 367 /* floor psychoacoustics */ 368 _vp_compute_mask(&p_look, 369 pg_look, 370 i, 371 fft, 372 logmdct, 373 mask, 374 ampmax, 375 local_ampmax[i], 376 framesize/2); 377 378 analysis("mask",frameno+i,mask,framesize/2,1,0); 379 380 { 381 vorbis_block vb; 382 vorbis_dsp_state vd; 383 memset(&vd,0,sizeof(vd)); 384 vd.vi=&vi; 385 vb.vd=&vd; 386 vb.pcmend=framesize; 387 388 /* floor quantization/application */ 389 nonzero[i]=_floor_P[1]->forward(&vb,floor_look, 390 mdct, 391 logmdct, 392 mask, 393 logmax, 394 395 flr[i]); 396 } 397 398 _vp_remove_floor(&p_look, 399 pg_look, 400 logmdct, 401 mdct, 402 flr[i], 403 pcm[i], 404 local_ampmax[i]); 405 406 for(j=0;j<framesize/2;j++) 407 if(fabs(pcm[i][j])>1500) 408 fprintf(stderr,"%ld ",frameno+i); 409 410 analysis("res",frameno+i,pcm[i],framesize/2,1,0); 411 analysis("codedflr",frameno+i,flr[i],framesize/2,1,1); 412 } 413 414 /* residue prequantization */ 415 _vp_partition_prequant(&p_look, 416 &vi, 417 pcm, 418 nonzero); 419 420 for(i=0;i<2;i++) 421 analysis("quant",frameno+i,pcm[i],framesize/2,1,0); 422 423 /* channel coupling / stereo quantization */ 424 425 _vp_couple(&p_look, 426 &mapping_info, 427 pcm, 428 nonzero); 429 430 for(i=0;i<2;i++) 431 analysis("coupled",frameno+i,pcm[i],framesize/2,1,0); 432 433 /* decoupling */ 434 for(i=mapping_info.coupling_steps-1;i>=0;i--){ 435 float *pcmM=pcm[mapping_info.coupling_mag[i]]; 436 float *pcmA=pcm[mapping_info.coupling_ang[i]]; 437 438 for(j=0;j<framesize/2;j++){ 439 float mag=pcmM[j]; 440 float ang=pcmA[j]; 441 442 if(mag>0) 443 if(ang>0){ 444 pcmM[j]=mag; 445 pcmA[j]=mag-ang; 446 }else{ 447 pcmA[j]=mag; 448 pcmM[j]=mag+ang; 449 } 450 else 451 if(ang>0){ 452 pcmM[j]=mag; 453 pcmA[j]=mag+ang; 454 }else{ 455 pcmA[j]=mag; 456 pcmM[j]=mag-ang; 457 } 458 } 459 } 460 461 for(i=0;i<2;i++) 462 analysis("decoupled",frameno+i,pcm[i],framesize/2,1,0); 463 464 for(i=0;i<2;i++){ 465 float amp; 466 467 for(j=0;j<framesize/2;j++) 468 pcm[i][j]*=flr[i][j]; 469 470 analysis("final",frameno+i,pcm[i],framesize/2,1,1); 471 472 /* take it back to time */ 473 mdct_backward(&m_look,pcm[i],pcm[i]); 474 475 for(j=0;j<framesize/2;j++) 476 out[i][j]+=pcm[i][j]*window[j]; 477 478 analysis("out",frameno+i,out[i],framesize/2,0,0); 479 480 481 } 482 483 /* write data. Use the part of buffer we're about to shift out */ 484 for(i=0;i<2;i++){ 485 char *ptr=buffer+i*2; 486 float *mono=out[i]; 487 int flag=0; 488 for(j=0;j<framesize/2;j++){ 489 int val=mono[j]*32767.; 490 /* might as well guard against clipping */ 491 if(val>32767){ 492 if(!flag)fprintf(stderr,"clipping in frame %ld ",frameno+i); 493 flag=1; 494 val=32767; 495 } 496 if(val<-32768){ 497 if(!flag)fprintf(stderr,"clipping in frame %ld ",frameno+i); 498 flag=1; 499 val=-32768; 500 } 501 ptr[0]=val&0xff; 502 ptr[1]=(val>>8)&0xff; 503 ptr+=4; 504 } 505 } 506 507 fprintf(stderr,"*"); 508 fwrite(buffer,1,framesize*2,stdout); 509 memmove(buffer,buffer2,framesize*2); 510 511 for(i=0;i<2;i++){ 512 for(j=0,k=framesize/2;j<framesize/2;j++,k++) 513 out[i][j]=pcm[i][k]*window[k]; 514 } 515 frameno+=2; 516 }else 517 eos=1; 518 } 519 fprintf(stderr,"average raw bits of entropy: %.03g/sample\n",acc/tot); 520 fprintf(stderr,"average nonzero samples: %.03g/%d\n",nonz/tot*framesize/2, 521 framesize/2); 522 fprintf(stderr,"Done\n\n"); 523 return 0; 524 } 525
