diff options
Diffstat (limited to 'contrib/vorbis/lib/mapping0.c')
| -rw-r--r-- | contrib/vorbis/lib/mapping0.c | 808 |
1 files changed, 0 insertions, 808 deletions
diff --git a/contrib/vorbis/lib/mapping0.c b/contrib/vorbis/lib/mapping0.c deleted file mode 100644 index ccb4493..0000000 --- a/contrib/vorbis/lib/mapping0.c +++ /dev/null @@ -1,808 +0,0 @@ -/******************************************************************** - * * - * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. * - * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * - * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * - * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * - * * - * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2010 * - * by the Xiph.Org Foundation http://www.xiph.org/ * - * * - ******************************************************************** - - function: channel mapping 0 implementation - - ********************************************************************/ - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <math.h> -#include <ogg/ogg.h> -#include "vorbis/codec.h" -#include "codec_internal.h" -#include "codebook.h" -#include "window.h" -#include "registry.h" -#include "psy.h" -#include "misc.h" - -/* simplistic, wasteful way of doing this (unique lookup for each - mode/submapping); there should be a central repository for - identical lookups. That will require minor work, so I'm putting it - off as low priority. - - Why a lookup for each backend in a given mode? Because the - blocksize is set by the mode, and low backend lookups may require - parameters from other areas of the mode/mapping */ - -static void mapping0_free_info(vorbis_info_mapping *i){ - vorbis_info_mapping0 *info=(vorbis_info_mapping0 *)i; - if(info){ - memset(info,0,sizeof(*info)); - _ogg_free(info); - } -} - -static void mapping0_pack(vorbis_info *vi,vorbis_info_mapping *vm, - oggpack_buffer *opb){ - int i; - vorbis_info_mapping0 *info=(vorbis_info_mapping0 *)vm; - - /* another 'we meant to do it this way' hack... up to beta 4, we - packed 4 binary zeros here to signify one submapping in use. We - now redefine that to mean four bitflags that indicate use of - deeper features; bit0:submappings, bit1:coupling, - bit2,3:reserved. This is backward compatable with all actual uses - of the beta code. */ - - if(info->submaps>1){ - oggpack_write(opb,1,1); - oggpack_write(opb,info->submaps-1,4); - }else - oggpack_write(opb,0,1); - - if(info->coupling_steps>0){ - oggpack_write(opb,1,1); - oggpack_write(opb,info->coupling_steps-1,8); - - for(i=0;i<info->coupling_steps;i++){ - oggpack_write(opb,info->coupling_mag[i],ov_ilog(vi->channels-1)); - oggpack_write(opb,info->coupling_ang[i],ov_ilog(vi->channels-1)); - } - }else - oggpack_write(opb,0,1); - - oggpack_write(opb,0,2); /* 2,3:reserved */ - - /* we don't write the channel submappings if we only have one... */ - if(info->submaps>1){ - for(i=0;i<vi->channels;i++) - oggpack_write(opb,info->chmuxlist[i],4); - } - for(i=0;i<info->submaps;i++){ - oggpack_write(opb,0,8); /* time submap unused */ - oggpack_write(opb,info->floorsubmap[i],8); - oggpack_write(opb,info->residuesubmap[i],8); - } -} - -/* also responsible for range checking */ -static vorbis_info_mapping *mapping0_unpack(vorbis_info *vi,oggpack_buffer *opb){ - int i,b; - vorbis_info_mapping0 *info=_ogg_calloc(1,sizeof(*info)); - codec_setup_info *ci=vi->codec_setup; - if(vi->channels<=0)goto err_out; - - b=oggpack_read(opb,1); - if(b<0)goto err_out; - if(b){ - info->submaps=oggpack_read(opb,4)+1; - if(info->submaps<=0)goto err_out; - }else - info->submaps=1; - - b=oggpack_read(opb,1); - if(b<0)goto err_out; - if(b){ - info->coupling_steps=oggpack_read(opb,8)+1; - if(info->coupling_steps<=0)goto err_out; - for(i=0;i<info->coupling_steps;i++){ - /* vi->channels > 0 is enforced in the caller */ - int testM=info->coupling_mag[i]= - oggpack_read(opb,ov_ilog(vi->channels-1)); - int testA=info->coupling_ang[i]= - oggpack_read(opb,ov_ilog(vi->channels-1)); - - if(testM<0 || - testA<0 || - testM==testA || - testM>=vi->channels || - testA>=vi->channels) goto err_out; - } - - } - - if(oggpack_read(opb,2)!=0)goto err_out; /* 2,3:reserved */ - - if(info->submaps>1){ - for(i=0;i<vi->channels;i++){ - info->chmuxlist[i]=oggpack_read(opb,4); - if(info->chmuxlist[i]>=info->submaps || info->chmuxlist[i]<0)goto err_out; - } - } - for(i=0;i<info->submaps;i++){ - oggpack_read(opb,8); /* time submap unused */ - info->floorsubmap[i]=oggpack_read(opb,8); - if(info->floorsubmap[i]>=ci->floors || info->floorsubmap[i]<0)goto err_out; - info->residuesubmap[i]=oggpack_read(opb,8); - if(info->residuesubmap[i]>=ci->residues || info->residuesubmap[i]<0)goto err_out; - } - - return info; - - err_out: - mapping0_free_info(info); - return(NULL); -} - -#include "os.h" -#include "lpc.h" -#include "lsp.h" -#include "envelope.h" -#include "mdct.h" -#include "psy.h" -#include "scales.h" - -#if 0 -static long seq=0; -static ogg_int64_t total=0; -static float FLOOR1_fromdB_LOOKUP[256]={ - 1.0649863e-07F, 1.1341951e-07F, 1.2079015e-07F, 1.2863978e-07F, - 1.3699951e-07F, 1.4590251e-07F, 1.5538408e-07F, 1.6548181e-07F, - 1.7623575e-07F, 1.8768855e-07F, 1.9988561e-07F, 2.128753e-07F, - 2.2670913e-07F, 2.4144197e-07F, 2.5713223e-07F, 2.7384213e-07F, - 2.9163793e-07F, 3.1059021e-07F, 3.3077411e-07F, 3.5226968e-07F, - 3.7516214e-07F, 3.9954229e-07F, 4.2550680e-07F, 4.5315863e-07F, - 4.8260743e-07F, 5.1396998e-07F, 5.4737065e-07F, 5.8294187e-07F, - 6.2082472e-07F, 6.6116941e-07F, 7.0413592e-07F, 7.4989464e-07F, - 7.9862701e-07F, 8.5052630e-07F, 9.0579828e-07F, 9.6466216e-07F, - 1.0273513e-06F, 1.0941144e-06F, 1.1652161e-06F, 1.2409384e-06F, - 1.3215816e-06F, 1.4074654e-06F, 1.4989305e-06F, 1.5963394e-06F, - 1.7000785e-06F, 1.8105592e-06F, 1.9282195e-06F, 2.0535261e-06F, - 2.1869758e-06F, 2.3290978e-06F, 2.4804557e-06F, 2.6416497e-06F, - 2.8133190e-06F, 2.9961443e-06F, 3.1908506e-06F, 3.3982101e-06F, - 3.6190449e-06F, 3.8542308e-06F, 4.1047004e-06F, 4.3714470e-06F, - 4.6555282e-06F, 4.9580707e-06F, 5.2802740e-06F, 5.6234160e-06F, - 5.9888572e-06F, 6.3780469e-06F, 6.7925283e-06F, 7.2339451e-06F, - 7.7040476e-06F, 8.2047000e-06F, 8.7378876e-06F, 9.3057248e-06F, - 9.9104632e-06F, 1.0554501e-05F, 1.1240392e-05F, 1.1970856e-05F, - 1.2748789e-05F, 1.3577278e-05F, 1.4459606e-05F, 1.5399272e-05F, - 1.6400004e-05F, 1.7465768e-05F, 1.8600792e-05F, 1.9809576e-05F, - 2.1096914e-05F, 2.2467911e-05F, 2.3928002e-05F, 2.5482978e-05F, - 2.7139006e-05F, 2.8902651e-05F, 3.0780908e-05F, 3.2781225e-05F, - 3.4911534e-05F, 3.7180282e-05F, 3.9596466e-05F, 4.2169667e-05F, - 4.4910090e-05F, 4.7828601e-05F, 5.0936773e-05F, 5.4246931e-05F, - 5.7772202e-05F, 6.1526565e-05F, 6.5524908e-05F, 6.9783085e-05F, - 7.4317983e-05F, 7.9147585e-05F, 8.4291040e-05F, 8.9768747e-05F, - 9.5602426e-05F, 0.00010181521F, 0.00010843174F, 0.00011547824F, - 0.00012298267F, 0.00013097477F, 0.00013948625F, 0.00014855085F, - 0.00015820453F, 0.00016848555F, 0.00017943469F, 0.00019109536F, - 0.00020351382F, 0.00021673929F, 0.00023082423F, 0.00024582449F, - 0.00026179955F, 0.00027881276F, 0.00029693158F, 0.00031622787F, - 0.00033677814F, 0.00035866388F, 0.00038197188F, 0.00040679456F, - 0.00043323036F, 0.00046138411F, 0.00049136745F, 0.00052329927F, - 0.00055730621F, 0.00059352311F, 0.00063209358F, 0.00067317058F, - 0.00071691700F, 0.00076350630F, 0.00081312324F, 0.00086596457F, - 0.00092223983F, 0.00098217216F, 0.0010459992F, 0.0011139742F, - 0.0011863665F, 0.0012634633F, 0.0013455702F, 0.0014330129F, - 0.0015261382F, 0.0016253153F, 0.0017309374F, 0.0018434235F, - 0.0019632195F, 0.0020908006F, 0.0022266726F, 0.0023713743F, - 0.0025254795F, 0.0026895994F, 0.0028643847F, 0.0030505286F, - 0.0032487691F, 0.0034598925F, 0.0036847358F, 0.0039241906F, - 0.0041792066F, 0.0044507950F, 0.0047400328F, 0.0050480668F, - 0.0053761186F, 0.0057254891F, 0.0060975636F, 0.0064938176F, - 0.0069158225F, 0.0073652516F, 0.0078438871F, 0.0083536271F, - 0.0088964928F, 0.009474637F, 0.010090352F, 0.010746080F, - 0.011444421F, 0.012188144F, 0.012980198F, 0.013823725F, - 0.014722068F, 0.015678791F, 0.016697687F, 0.017782797F, - 0.018938423F, 0.020169149F, 0.021479854F, 0.022875735F, - 0.024362330F, 0.025945531F, 0.027631618F, 0.029427276F, - 0.031339626F, 0.033376252F, 0.035545228F, 0.037855157F, - 0.040315199F, 0.042935108F, 0.045725273F, 0.048696758F, - 0.051861348F, 0.055231591F, 0.058820850F, 0.062643361F, - 0.066714279F, 0.071049749F, 0.075666962F, 0.080584227F, - 0.085821044F, 0.091398179F, 0.097337747F, 0.10366330F, - 0.11039993F, 0.11757434F, 0.12521498F, 0.13335215F, - 0.14201813F, 0.15124727F, 0.16107617F, 0.17154380F, - 0.18269168F, 0.19456402F, 0.20720788F, 0.22067342F, - 0.23501402F, 0.25028656F, 0.26655159F, 0.28387361F, - 0.30232132F, 0.32196786F, 0.34289114F, 0.36517414F, - 0.38890521F, 0.41417847F, 0.44109412F, 0.46975890F, - 0.50028648F, 0.53279791F, 0.56742212F, 0.60429640F, - 0.64356699F, 0.68538959F, 0.72993007F, 0.77736504F, - 0.82788260F, 0.88168307F, 0.9389798F, 1.F, -}; - -#endif - - -static int mapping0_forward(vorbis_block *vb){ - vorbis_dsp_state *vd=vb->vd; - vorbis_info *vi=vd->vi; - codec_setup_info *ci=vi->codec_setup; - private_state *b=vb->vd->backend_state; - vorbis_block_internal *vbi=(vorbis_block_internal *)vb->internal; - int n=vb->pcmend; - int i,j,k; - - int *nonzero = alloca(sizeof(*nonzero)*vi->channels); - float **gmdct = _vorbis_block_alloc(vb,vi->channels*sizeof(*gmdct)); - int **iwork = _vorbis_block_alloc(vb,vi->channels*sizeof(*iwork)); - int ***floor_posts = _vorbis_block_alloc(vb,vi->channels*sizeof(*floor_posts)); - - float global_ampmax=vbi->ampmax; - float *local_ampmax=alloca(sizeof(*local_ampmax)*vi->channels); - int blocktype=vbi->blocktype; - - int modenumber=vb->W; - vorbis_info_mapping0 *info=ci->map_param[modenumber]; - vorbis_look_psy *psy_look=b->psy+blocktype+(vb->W?2:0); - - vb->mode=modenumber; - - for(i=0;i<vi->channels;i++){ - float scale=4.f/n; - float scale_dB; - - float *pcm =vb->pcm[i]; - float *logfft =pcm; - - iwork[i]=_vorbis_block_alloc(vb,n/2*sizeof(**iwork)); - gmdct[i]=_vorbis_block_alloc(vb,n/2*sizeof(**gmdct)); - - scale_dB=todB(&scale) + .345; /* + .345 is a hack; the original - todB estimation used on IEEE 754 - compliant machines had a bug that - returned dB values about a third - of a decibel too high. The bug - was harmless because tunings - implicitly took that into - account. However, fixing the bug - in the estimator requires - changing all the tunings as well. - For now, it's easier to sync - things back up here, and - recalibrate the tunings in the - next major model upgrade. */ - -#if 0 - if(vi->channels==2){ - if(i==0) - _analysis_output("pcmL",seq,pcm,n,0,0,total-n/2); - else - _analysis_output("pcmR",seq,pcm,n,0,0,total-n/2); - }else{ - _analysis_output("pcm",seq,pcm,n,0,0,total-n/2); - } -#endif - - /* window the PCM data */ - _vorbis_apply_window(pcm,b->window,ci->blocksizes,vb->lW,vb->W,vb->nW); - -#if 0 - if(vi->channels==2){ - if(i==0) - _analysis_output("windowedL",seq,pcm,n,0,0,total-n/2); - else - _analysis_output("windowedR",seq,pcm,n,0,0,total-n/2); - }else{ - _analysis_output("windowed",seq,pcm,n,0,0,total-n/2); - } -#endif - - /* transform the PCM data */ - /* only MDCT right now.... */ - mdct_forward(b->transform[vb->W][0],pcm,gmdct[i]); - - /* FFT yields more accurate tonal estimation (not phase sensitive) */ - drft_forward(&b->fft_look[vb->W],pcm); - logfft[0]=scale_dB+todB(pcm) + .345; /* + .345 is a hack; the - original todB estimation used on - IEEE 754 compliant machines had a - bug that returned dB values about - a third of a decibel too high. - The bug was harmless because - tunings implicitly took that into - account. However, fixing the bug - in the estimator requires - changing all the tunings as well. - For now, it's easier to sync - things back up here, and - recalibrate the tunings in the - next major model upgrade. */ - local_ampmax[i]=logfft[0]; - for(j=1;j<n-1;j+=2){ - float temp=pcm[j]*pcm[j]+pcm[j+1]*pcm[j+1]; - temp=logfft[(j+1)>>1]=scale_dB+.5f*todB(&temp) + .345; /* + - .345 is a hack; the original todB - estimation used on IEEE 754 - compliant machines had a bug that - returned dB values about a third - of a decibel too high. The bug - was harmless because tunings - implicitly took that into - account. However, fixing the bug - in the estimator requires - changing all the tunings as well. - For now, it's easier to sync - things back up here, and - recalibrate the tunings in the - next major model upgrade. */ - if(temp>local_ampmax[i])local_ampmax[i]=temp; - } - - if(local_ampmax[i]>0.f)local_ampmax[i]=0.f; - if(local_ampmax[i]>global_ampmax)global_ampmax=local_ampmax[i]; - -#if 0 - if(vi->channels==2){ - if(i==0){ - _analysis_output("fftL",seq,logfft,n/2,1,0,0); - }else{ - _analysis_output("fftR",seq,logfft,n/2,1,0,0); - } - }else{ - _analysis_output("fft",seq,logfft,n/2,1,0,0); - } -#endif - - } - - { - float *noise = _vorbis_block_alloc(vb,n/2*sizeof(*noise)); - float *tone = _vorbis_block_alloc(vb,n/2*sizeof(*tone)); - - for(i=0;i<vi->channels;i++){ - /* the encoder setup assumes that all the modes used by any - specific bitrate tweaking use the same floor */ - - int submap=info->chmuxlist[i]; - - /* the following makes things clearer to *me* anyway */ - float *mdct =gmdct[i]; - float *logfft =vb->pcm[i]; - - float *logmdct =logfft+n/2; - float *logmask =logfft; - - vb->mode=modenumber; - - floor_posts[i]=_vorbis_block_alloc(vb,PACKETBLOBS*sizeof(**floor_posts)); - memset(floor_posts[i],0,sizeof(**floor_posts)*PACKETBLOBS); - - for(j=0;j<n/2;j++) - logmdct[j]=todB(mdct+j) + .345; /* + .345 is a hack; the original - todB estimation used on IEEE 754 - compliant machines had a bug that - returned dB values about a third - of a decibel too high. The bug - was harmless because tunings - implicitly took that into - account. However, fixing the bug - in the estimator requires - changing all the tunings as well. - For now, it's easier to sync - things back up here, and - recalibrate the tunings in the - next major model upgrade. */ - -#if 0 - if(vi->channels==2){ - if(i==0) - _analysis_output("mdctL",seq,logmdct,n/2,1,0,0); - else - _analysis_output("mdctR",seq,logmdct,n/2,1,0,0); - }else{ - _analysis_output("mdct",seq,logmdct,n/2,1,0,0); - } -#endif - - /* first step; noise masking. Not only does 'noise masking' - give us curves from which we can decide how much resolution - to give noise parts of the spectrum, it also implicitly hands - us a tonality estimate (the larger the value in the - 'noise_depth' vector, the more tonal that area is) */ - - _vp_noisemask(psy_look, - logmdct, - noise); /* noise does not have by-frequency offset - bias applied yet */ -#if 0 - if(vi->channels==2){ - if(i==0) - _analysis_output("noiseL",seq,noise,n/2,1,0,0); - else - _analysis_output("noiseR",seq,noise,n/2,1,0,0); - }else{ - _analysis_output("noise",seq,noise,n/2,1,0,0); - } -#endif - - /* second step: 'all the other crap'; all the stuff that isn't - computed/fit for bitrate management goes in the second psy - vector. This includes tone masking, peak limiting and ATH */ - - _vp_tonemask(psy_look, - logfft, - tone, - global_ampmax, - local_ampmax[i]); - -#if 0 - if(vi->channels==2){ - if(i==0) - _analysis_output("toneL",seq,tone,n/2,1,0,0); - else - _analysis_output("toneR",seq,tone,n/2,1,0,0); - }else{ - _analysis_output("tone",seq,tone,n/2,1,0,0); - } -#endif - - /* third step; we offset the noise vectors, overlay tone - masking. We then do a floor1-specific line fit. If we're - performing bitrate management, the line fit is performed - multiple times for up/down tweakage on demand. */ - -#if 0 - { - float aotuv[psy_look->n]; -#endif - - _vp_offset_and_mix(psy_look, - noise, - tone, - 1, - logmask, - mdct, - logmdct); - -#if 0 - if(vi->channels==2){ - if(i==0) - _analysis_output("aotuvM1_L",seq,aotuv,psy_look->n,1,1,0); - else - _analysis_output("aotuvM1_R",seq,aotuv,psy_look->n,1,1,0); - }else{ - _analysis_output("aotuvM1",seq,aotuv,psy_look->n,1,1,0); - } - } -#endif - - -#if 0 - if(vi->channels==2){ - if(i==0) - _analysis_output("mask1L",seq,logmask,n/2,1,0,0); - else - _analysis_output("mask1R",seq,logmask,n/2,1,0,0); - }else{ - _analysis_output("mask1",seq,logmask,n/2,1,0,0); - } -#endif - - /* this algorithm is hardwired to floor 1 for now; abort out if - we're *not* floor1. This won't happen unless someone has - broken the encode setup lib. Guard it anyway. */ - if(ci->floor_type[info->floorsubmap[submap]]!=1)return(-1); - - floor_posts[i][PACKETBLOBS/2]= - floor1_fit(vb,b->flr[info->floorsubmap[submap]], - logmdct, - logmask); - - /* are we managing bitrate? If so, perform two more fits for - later rate tweaking (fits represent hi/lo) */ - if(vorbis_bitrate_managed(vb) && floor_posts[i][PACKETBLOBS/2]){ - /* higher rate by way of lower noise curve */ - - _vp_offset_and_mix(psy_look, - noise, - tone, - 2, - logmask, - mdct, - logmdct); - -#if 0 - if(vi->channels==2){ - if(i==0) - _analysis_output("mask2L",seq,logmask,n/2,1,0,0); - else - _analysis_output("mask2R",seq,logmask,n/2,1,0,0); - }else{ - _analysis_output("mask2",seq,logmask,n/2,1,0,0); - } -#endif - - floor_posts[i][PACKETBLOBS-1]= - floor1_fit(vb,b->flr[info->floorsubmap[submap]], - logmdct, - logmask); - - /* lower rate by way of higher noise curve */ - _vp_offset_and_mix(psy_look, - noise, - tone, - 0, - logmask, - mdct, - logmdct); - -#if 0 - if(vi->channels==2){ - if(i==0) - _analysis_output("mask0L",seq,logmask,n/2,1,0,0); - else - _analysis_output("mask0R",seq,logmask,n/2,1,0,0); - }else{ - _analysis_output("mask0",seq,logmask,n/2,1,0,0); - } -#endif - - floor_posts[i][0]= - floor1_fit(vb,b->flr[info->floorsubmap[submap]], - logmdct, - logmask); - - /* we also interpolate a range of intermediate curves for - intermediate rates */ - for(k=1;k<PACKETBLOBS/2;k++) - floor_posts[i][k]= - floor1_interpolate_fit(vb,b->flr[info->floorsubmap[submap]], - floor_posts[i][0], - floor_posts[i][PACKETBLOBS/2], - k*65536/(PACKETBLOBS/2)); - for(k=PACKETBLOBS/2+1;k<PACKETBLOBS-1;k++) - floor_posts[i][k]= - floor1_interpolate_fit(vb,b->flr[info->floorsubmap[submap]], - floor_posts[i][PACKETBLOBS/2], - floor_posts[i][PACKETBLOBS-1], - (k-PACKETBLOBS/2)*65536/(PACKETBLOBS/2)); - } - } - } - vbi->ampmax=global_ampmax; - - /* - the next phases are performed once for vbr-only and PACKETBLOB - times for bitrate managed modes. - - 1) encode actual mode being used - 2) encode the floor for each channel, compute coded mask curve/res - 3) normalize and couple. - 4) encode residue - 5) save packet bytes to the packetblob vector - - */ - - /* iterate over the many masking curve fits we've created */ - - { - int **couple_bundle=alloca(sizeof(*couple_bundle)*vi->channels); - int *zerobundle=alloca(sizeof(*zerobundle)*vi->channels); - - for(k=(vorbis_bitrate_managed(vb)?0:PACKETBLOBS/2); - k<=(vorbis_bitrate_managed(vb)?PACKETBLOBS-1:PACKETBLOBS/2); - k++){ - oggpack_buffer *opb=vbi->packetblob[k]; - - /* start out our new packet blob with packet type and mode */ - /* Encode the packet type */ - oggpack_write(opb,0,1); - /* Encode the modenumber */ - /* Encode frame mode, pre,post windowsize, then dispatch */ - oggpack_write(opb,modenumber,b->modebits); - if(vb->W){ - oggpack_write(opb,vb->lW,1); - oggpack_write(opb,vb->nW,1); - } - - /* encode floor, compute masking curve, sep out residue */ - for(i=0;i<vi->channels;i++){ - int submap=info->chmuxlist[i]; - int *ilogmask=iwork[i]; - - nonzero[i]=floor1_encode(opb,vb,b->flr[info->floorsubmap[submap]], - floor_posts[i][k], - ilogmask); -#if 0 - { - char buf[80]; - sprintf(buf,"maskI%c%d",i?'R':'L',k); - float work[n/2]; - for(j=0;j<n/2;j++) - work[j]=FLOOR1_fromdB_LOOKUP[iwork[i][j]]; - _analysis_output(buf,seq,work,n/2,1,1,0); - } -#endif - } - - /* our iteration is now based on masking curve, not prequant and - coupling. Only one prequant/coupling step */ - - /* quantize/couple */ - /* incomplete implementation that assumes the tree is all depth - one, or no tree at all */ - _vp_couple_quantize_normalize(k, - &ci->psy_g_param, - psy_look, - info, - gmdct, - iwork, - nonzero, - ci->psy_g_param.sliding_lowpass[vb->W][k], - vi->channels); - -#if 0 - for(i=0;i<vi->channels;i++){ - char buf[80]; - sprintf(buf,"res%c%d",i?'R':'L',k); - float work[n/2]; - for(j=0;j<n/2;j++) - work[j]=iwork[i][j]; - _analysis_output(buf,seq,work,n/2,1,0,0); - } -#endif - - /* classify and encode by submap */ - for(i=0;i<info->submaps;i++){ - int ch_in_bundle=0; - long **classifications; - int resnum=info->residuesubmap[i]; - - for(j=0;j<vi->channels;j++){ - if(info->chmuxlist[j]==i){ - zerobundle[ch_in_bundle]=0; - if(nonzero[j])zerobundle[ch_in_bundle]=1; - couple_bundle[ch_in_bundle++]=iwork[j]; - } - } - - classifications=_residue_P[ci->residue_type[resnum]]-> - class(vb,b->residue[resnum],couple_bundle,zerobundle,ch_in_bundle); - - ch_in_bundle=0; - for(j=0;j<vi->channels;j++) - if(info->chmuxlist[j]==i) - couple_bundle[ch_in_bundle++]=iwork[j]; - - _residue_P[ci->residue_type[resnum]]-> - forward(opb,vb,b->residue[resnum], - couple_bundle,zerobundle,ch_in_bundle,classifications,i); - } - - /* ok, done encoding. Next protopacket. */ - } - - } - -#if 0 - seq++; - total+=ci->blocksizes[vb->W]/4+ci->blocksizes[vb->nW]/4; -#endif - return(0); -} - -static int mapping0_inverse(vorbis_block *vb,vorbis_info_mapping *l){ - vorbis_dsp_state *vd=vb->vd; - vorbis_info *vi=vd->vi; - codec_setup_info *ci=vi->codec_setup; - private_state *b=vd->backend_state; - vorbis_info_mapping0 *info=(vorbis_info_mapping0 *)l; - - int i,j; - long n=vb->pcmend=ci->blocksizes[vb->W]; - - float **pcmbundle=alloca(sizeof(*pcmbundle)*vi->channels); - int *zerobundle=alloca(sizeof(*zerobundle)*vi->channels); - - int *nonzero =alloca(sizeof(*nonzero)*vi->channels); - void **floormemo=alloca(sizeof(*floormemo)*vi->channels); - - /* recover the spectral envelope; store it in the PCM vector for now */ - for(i=0;i<vi->channels;i++){ - int submap=info->chmuxlist[i]; - floormemo[i]=_floor_P[ci->floor_type[info->floorsubmap[submap]]]-> - inverse1(vb,b->flr[info->floorsubmap[submap]]); - if(floormemo[i]) - nonzero[i]=1; - else - nonzero[i]=0; - memset(vb->pcm[i],0,sizeof(*vb->pcm[i])*n/2); - } - - /* channel coupling can 'dirty' the nonzero listing */ - for(i=0;i<info->coupling_steps;i++){ - if(nonzero[info->coupling_mag[i]] || - nonzero[info->coupling_ang[i]]){ - nonzero[info->coupling_mag[i]]=1; - nonzero[info->coupling_ang[i]]=1; - } - } - - /* recover the residue into our working vectors */ - for(i=0;i<info->submaps;i++){ - int ch_in_bundle=0; - for(j=0;j<vi->channels;j++){ - if(info->chmuxlist[j]==i){ - if(nonzero[j]) - zerobundle[ch_in_bundle]=1; - else - zerobundle[ch_in_bundle]=0; - pcmbundle[ch_in_bundle++]=vb->pcm[j]; - } - } - - _residue_P[ci->residue_type[info->residuesubmap[i]]]-> - inverse(vb,b->residue[info->residuesubmap[i]], - pcmbundle,zerobundle,ch_in_bundle); - } - - /* channel coupling */ - for(i=info->coupling_steps-1;i>=0;i--){ - float *pcmM=vb->pcm[info->coupling_mag[i]]; - float *pcmA=vb->pcm[info->coupling_ang[i]]; - - for(j=0;j<n/2;j++){ - float mag=pcmM[j]; - float ang=pcmA[j]; - - if(mag>0) - if(ang>0){ - pcmM[j]=mag; - pcmA[j]=mag-ang; - }else{ - pcmA[j]=mag; - pcmM[j]=mag+ang; - } - else - if(ang>0){ - pcmM[j]=mag; - pcmA[j]=mag+ang; - }else{ - pcmA[j]=mag; - pcmM[j]=mag-ang; - } - } - } - - /* compute and apply spectral envelope */ - for(i=0;i<vi->channels;i++){ - float *pcm=vb->pcm[i]; - int submap=info->chmuxlist[i]; - _floor_P[ci->floor_type[info->floorsubmap[submap]]]-> - inverse2(vb,b->flr[info->floorsubmap[submap]], - floormemo[i],pcm); - } - - /* transform the PCM data; takes PCM vector, vb; modifies PCM vector */ - /* only MDCT right now.... */ - for(i=0;i<vi->channels;i++){ - float *pcm=vb->pcm[i]; - mdct_backward(b->transform[vb->W][0],pcm,pcm); - } - - /* all done! */ - return(0); -} - -/* export hooks */ -const vorbis_func_mapping mapping0_exportbundle={ - &mapping0_pack, - &mapping0_unpack, - &mapping0_free_info, - &mapping0_forward, - &mapping0_inverse -}; |