867 lines
31 KiB
C
Executable file
867 lines
31 KiB
C
Executable file
/********************************************************************
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* *
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* THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
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* *
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* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009 *
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* by the Xiph.Org Foundation http://www.xiph.org/ *
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* *
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********************************************************************
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function: channel mapping 0 implementation
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last mod: $Id: mapping0.c 16227 2009-07-08 06:58:46Z xiphmont $
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********************************************************************/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include <ogg/ogg.h>
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#include "vorbis/codec.h"
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#include "codec_internal.h"
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#include "codebook.h"
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#include "window.h"
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#include "registry.h"
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#include "psy.h"
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#include "misc.h"
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/* simplistic, wasteful way of doing this (unique lookup for each
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mode/submapping); there should be a central repository for
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identical lookups. That will require minor work, so I'm putting it
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off as low priority.
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Why a lookup for each backend in a given mode? Because the
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blocksize is set by the mode, and low backend lookups may require
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parameters from other areas of the mode/mapping */
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static void mapping0_free_info(void *context, vorbis_info_mapping *i){
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vorbis_info_mapping0 *info=(vorbis_info_mapping0 *)i;
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if(info){
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FMOD_memset(info,0,sizeof(*info));
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_ogg_free(info);
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}
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}
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static int ilog(unsigned int v){
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int ret=0;
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if(v)--v;
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while(v){
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ret++;
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v>>=1;
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}
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return(ret);
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}
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#if 0
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static void mapping0_pack(vorbis_info *vi,vorbis_info_mapping *vm,
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oggpack_buffer *opb){
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int i;
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vorbis_info_mapping0 *info=(vorbis_info_mapping0 *)vm;
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/* another 'we meant to do it this way' hack... up to beta 4, we
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packed 4 binary zeros here to signify one submapping in use. We
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now redefine that to mean four bitflags that indicate use of
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deeper features; bit0:submappings, bit1:coupling,
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bit2,3:reserved. This is backward compatable with all actual uses
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of the beta code. */
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if(info->submaps>1){
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FMOD_oggpack_write(opb,1,1);
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FMOD_oggpack_write(opb,info->submaps-1,4);
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}else
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FMOD_oggpack_write(opb,0,1);
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if(info->coupling_steps>0){
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FMOD_oggpack_write(opb,1,1);
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FMOD_oggpack_write(opb,info->coupling_steps-1,8);
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for(i=0;i<info->coupling_steps;i++){
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FMOD_oggpack_write(opb,info->coupling_mag[i],ilog(vi->channels));
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FMOD_oggpack_write(opb,info->coupling_ang[i],ilog(vi->channels));
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}
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}else
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FMOD_oggpack_write(opb,0,1);
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FMOD_oggpack_write(opb,0,2); /* 2,3:reserved */
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/* we don't write the channel submappings if we only have one... */
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if(info->submaps>1){
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for(i=0;i<vi->channels;i++)
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FMOD_oggpack_write(opb,info->chmuxlist[i],4);
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}
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for(i=0;i<info->submaps;i++){
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FMOD_oggpack_write(opb,0,8); /* time submap unused */
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FMOD_oggpack_write(opb,info->floorsubmap[i],8);
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FMOD_oggpack_write(opb,info->residuesubmap[i],8);
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}
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}
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#endif
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/* also responsible for range checking */
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static vorbis_info_mapping *mapping0_unpack(void *context, vorbis_info *vi,oggpack_buffer *opb){
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int i,b;
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vorbis_info_mapping0 *info=_ogg_calloc(1,sizeof(*info));
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codec_setup_info *ci=vi->codec_setup;
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FMOD_memset(info,0,sizeof(*info));
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b=FMOD_oggpack_read(opb,1);
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if(b<0)goto err_out;
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if(b){
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info->submaps=FMOD_oggpack_read(opb,4)+1;
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if(info->submaps<=0)goto err_out;
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}else
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info->submaps=1;
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b=FMOD_oggpack_read(opb,1);
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if(b<0)goto err_out;
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if(b){
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info->coupling_steps=FMOD_oggpack_read(opb,8)+1;
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if(info->coupling_steps<=0)goto err_out;
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for(i=0;i<info->coupling_steps;i++){
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int testM=info->coupling_mag[i]=FMOD_oggpack_read(opb,ilog(vi->channels));
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int testA=info->coupling_ang[i]=FMOD_oggpack_read(opb,ilog(vi->channels));
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if(testM<0 ||
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testA<0 ||
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testM==testA ||
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testM>=vi->channels ||
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testA>=vi->channels) goto err_out;
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}
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}
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if(FMOD_oggpack_read(opb,2)!=0)goto err_out; /* 2,3:reserved */
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if(info->submaps>1){
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for(i=0;i<vi->channels;i++){
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info->chmuxlist[i]=FMOD_oggpack_read(opb,4);
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if(info->chmuxlist[i]>=info->submaps || info->chmuxlist[i]<0)goto err_out;
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}
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}
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for(i=0;i<info->submaps;i++){
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FMOD_oggpack_read(opb,8); /* time submap unused */
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info->floorsubmap[i]=FMOD_oggpack_read(opb,8);
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if(info->floorsubmap[i]>=ci->floors || info->floorsubmap[i]<0)goto err_out;
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info->residuesubmap[i]=FMOD_oggpack_read(opb,8);
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if(info->residuesubmap[i]>=ci->residues || info->residuesubmap[i]<0)goto err_out;
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}
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return info;
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err_out:
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mapping0_free_info(context, info);
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return(NULL);
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}
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#include "os.h"
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#include "lpc.h"
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#include "lsp.h"
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//#include "envelope.h"
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#include "mdct.h"
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#include "psy.h"
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#include "scales.h"
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#if 0
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static ogg_int32_t seq=0;
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static ogg_int64_t total=0;
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static float FLOOR1_fromdB_LOOKUP[256]={
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1.0649863e-07F, 1.1341951e-07F, 1.2079015e-07F, 1.2863978e-07F,
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1.3699951e-07F, 1.4590251e-07F, 1.5538408e-07F, 1.6548181e-07F,
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1.7623575e-07F, 1.8768855e-07F, 1.9988561e-07F, 2.128753e-07F,
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2.2670913e-07F, 2.4144197e-07F, 2.5713223e-07F, 2.7384213e-07F,
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2.9163793e-07F, 3.1059021e-07F, 3.3077411e-07F, 3.5226968e-07F,
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3.7516214e-07F, 3.9954229e-07F, 4.2550680e-07F, 4.5315863e-07F,
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4.8260743e-07F, 5.1396998e-07F, 5.4737065e-07F, 5.8294187e-07F,
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6.2082472e-07F, 6.6116941e-07F, 7.0413592e-07F, 7.4989464e-07F,
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7.9862701e-07F, 8.5052630e-07F, 9.0579828e-07F, 9.6466216e-07F,
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1.0273513e-06F, 1.0941144e-06F, 1.1652161e-06F, 1.2409384e-06F,
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1.3215816e-06F, 1.4074654e-06F, 1.4989305e-06F, 1.5963394e-06F,
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1.7000785e-06F, 1.8105592e-06F, 1.9282195e-06F, 2.0535261e-06F,
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2.1869758e-06F, 2.3290978e-06F, 2.4804557e-06F, 2.6416497e-06F,
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2.8133190e-06F, 2.9961443e-06F, 3.1908506e-06F, 3.3982101e-06F,
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3.6190449e-06F, 3.8542308e-06F, 4.1047004e-06F, 4.3714470e-06F,
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4.6555282e-06F, 4.9580707e-06F, 5.2802740e-06F, 5.6234160e-06F,
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5.9888572e-06F, 6.3780469e-06F, 6.7925283e-06F, 7.2339451e-06F,
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7.7040476e-06F, 8.2047000e-06F, 8.7378876e-06F, 9.3057248e-06F,
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9.9104632e-06F, 1.0554501e-05F, 1.1240392e-05F, 1.1970856e-05F,
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1.2748789e-05F, 1.3577278e-05F, 1.4459606e-05F, 1.5399272e-05F,
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1.6400004e-05F, 1.7465768e-05F, 1.8600792e-05F, 1.9809576e-05F,
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2.1096914e-05F, 2.2467911e-05F, 2.3928002e-05F, 2.5482978e-05F,
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2.7139006e-05F, 2.8902651e-05F, 3.0780908e-05F, 3.2781225e-05F,
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3.4911534e-05F, 3.7180282e-05F, 3.9596466e-05F, 4.2169667e-05F,
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4.4910090e-05F, 4.7828601e-05F, 5.0936773e-05F, 5.4246931e-05F,
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5.7772202e-05F, 6.1526565e-05F, 6.5524908e-05F, 6.9783085e-05F,
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7.4317983e-05F, 7.9147585e-05F, 8.4291040e-05F, 8.9768747e-05F,
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9.5602426e-05F, 0.00010181521F, 0.00010843174F, 0.00011547824F,
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0.00012298267F, 0.00013097477F, 0.00013948625F, 0.00014855085F,
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0.00015820453F, 0.00016848555F, 0.00017943469F, 0.00019109536F,
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0.00020351382F, 0.00021673929F, 0.00023082423F, 0.00024582449F,
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0.00026179955F, 0.00027881276F, 0.00029693158F, 0.00031622787F,
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0.00033677814F, 0.00035866388F, 0.00038197188F, 0.00040679456F,
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0.00043323036F, 0.00046138411F, 0.00049136745F, 0.00052329927F,
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0.00055730621F, 0.00059352311F, 0.00063209358F, 0.00067317058F,
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0.00071691700F, 0.00076350630F, 0.00081312324F, 0.00086596457F,
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0.00092223983F, 0.00098217216F, 0.0010459992F, 0.0011139742F,
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0.0011863665F, 0.0012634633F, 0.0013455702F, 0.0014330129F,
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0.0015261382F, 0.0016253153F, 0.0017309374F, 0.0018434235F,
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0.0019632195F, 0.0020908006F, 0.0022266726F, 0.0023713743F,
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0.0025254795F, 0.0026895994F, 0.0028643847F, 0.0030505286F,
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0.0032487691F, 0.0034598925F, 0.0036847358F, 0.0039241906F,
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0.0041792066F, 0.0044507950F, 0.0047400328F, 0.0050480668F,
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0.0053761186F, 0.0057254891F, 0.0060975636F, 0.0064938176F,
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0.0069158225F, 0.0073652516F, 0.0078438871F, 0.0083536271F,
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0.0088964928F, 0.009474637F, 0.010090352F, 0.010746080F,
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0.011444421F, 0.012188144F, 0.012980198F, 0.013823725F,
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0.014722068F, 0.015678791F, 0.016697687F, 0.017782797F,
|
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0.018938423F, 0.020169149F, 0.021479854F, 0.022875735F,
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0.024362330F, 0.025945531F, 0.027631618F, 0.029427276F,
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0.031339626F, 0.033376252F, 0.035545228F, 0.037855157F,
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0.040315199F, 0.042935108F, 0.045725273F, 0.048696758F,
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0.051861348F, 0.055231591F, 0.058820850F, 0.062643361F,
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0.066714279F, 0.071049749F, 0.075666962F, 0.080584227F,
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0.085821044F, 0.091398179F, 0.097337747F, 0.10366330F,
|
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0.11039993F, 0.11757434F, 0.12521498F, 0.13335215F,
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0.14201813F, 0.15124727F, 0.16107617F, 0.17154380F,
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0.18269168F, 0.19456402F, 0.20720788F, 0.22067342F,
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0.23501402F, 0.25028656F, 0.26655159F, 0.28387361F,
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0.30232132F, 0.32196786F, 0.34289114F, 0.36517414F,
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0.38890521F, 0.41417847F, 0.44109412F, 0.46975890F,
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0.50028648F, 0.53279791F, 0.56742212F, 0.60429640F,
|
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0.64356699F, 0.68538959F, 0.72993007F, 0.77736504F,
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0.82788260F, 0.88168307F, 0.9389798F, 1.F,
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};
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#endif
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//static int mapping0_forward(void *context, vorbis_block *vb){
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// vorbis_dsp_state *vd=vb->vd;
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// vorbis_info *vi=vd->vi;
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// codec_setup_info *ci=vi->codec_setup;
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// private_state *b=vb->vd->backend_state;
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// vorbis_block_internal *vbi=(vorbis_block_internal *)vb->internal;
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// int n=vb->pcmend;
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// int i,j,k;
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//
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// int *nonzero = alloca(sizeof(*nonzero)*vi->channels);
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// float **gmdct = _FMOD_vorbis_block_alloc(context, vb,vi->channels*sizeof(*gmdct));
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// int **ilogmaskch= _FMOD_vorbis_block_alloc(context, vb,vi->channels*sizeof(*ilogmaskch));
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// int ***floor_posts = _FMOD_vorbis_block_alloc(context, vb,vi->channels*sizeof(*floor_posts));
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//
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// float global_ampmax=vbi->ampmax;
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// float *local_ampmax=alloca(sizeof(*local_ampmax)*vi->channels);
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// int blocktype=vbi->blocktype;
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//
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// int modenumber=vb->W;
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// vorbis_info_mapping0 *info=ci->map_param[modenumber];
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// vorbis_look_psy *psy_look=
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// b->psy+blocktype+(vb->W?2:0);
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//
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// vb->mode=modenumber;
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//
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// for(i=0;i<vi->channels;i++){
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// float scale=4.f/n;
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// float scale_dB;
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//
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// float *pcm =vb->pcm[i];
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// float *logfft =pcm;
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//
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// gmdct[i]=_FMOD_vorbis_block_alloc(context, vb,n/2*sizeof(**gmdct));
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//
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// scale_dB=todB(&scale) + .345f; /* + .345 is a hack; the original
|
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// todB estimation used on IEEE 754
|
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// compliant machines had a bug that
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// returned dB values about a third
|
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// of a decibel too high. The bug
|
|
// was harmless because tunings
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|
// 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)
|
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// _analysis_output("pcmL",seq,pcm,n,0,0,total-n/2);
|
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// else
|
|
// _analysis_output("pcmR",seq,pcm,n,0,0,total-n/2);
|
|
// }else{
|
|
// _analysis_output("pcm",seq,pcm,n,0,0,total-n/2);
|
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// }
|
|
//#endif
|
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//
|
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// /* window the PCM data */
|
|
// _FMOD_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.... */
|
|
// FMOD_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) + .345f; /* + .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) + .345f; /* +
|
|
// .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 = _FMOD_vorbis_block_alloc(context, vb,n/2*sizeof(*noise));
|
|
// float *tone = _FMOD_vorbis_block_alloc(context, 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]=_FMOD_vorbis_block_alloc(context, vb,PACKETBLOBS*sizeof(**floor_posts));
|
|
// FMOD_memset(floor_posts[i],0,sizeof(**floor_posts)*PACKETBLOBS);
|
|
//
|
|
// for(j=0;j<n/2;j++)
|
|
// logmdct[j]=todB(mdct+j) + .345f; /* + .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(context, 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(FMOD_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(context, 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(context, 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(context, 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(context, 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 */
|
|
//
|
|
// {
|
|
// float **res_bundle=alloca(sizeof(*res_bundle)*vi->channels);
|
|
// float **couple_bundle=alloca(sizeof(*couple_bundle)*vi->channels);
|
|
// int *zerobundle=alloca(sizeof(*zerobundle)*vi->channels);
|
|
// int **sortindex=alloca(sizeof(*sortindex)*vi->channels);
|
|
// float **mag_memo=NULL;
|
|
// int **mag_sort=NULL;
|
|
//
|
|
// if(info->coupling_steps){
|
|
// mag_memo=_vp_quantize_couple_memo(context, vb,
|
|
// &ci->psy_g_param,
|
|
// psy_look,
|
|
// info,
|
|
// gmdct);
|
|
//
|
|
// mag_sort=_vp_quantize_couple_sort(context, vb,
|
|
// psy_look,
|
|
// info,
|
|
// mag_memo);
|
|
//
|
|
// hf_reduction(&ci->psy_g_param,
|
|
// psy_look,
|
|
// info,
|
|
// mag_memo);
|
|
// }
|
|
//
|
|
// FMOD_memset(sortindex,0,sizeof(*sortindex)*vi->channels);
|
|
// if(psy_look->vi->normal_channel_p){
|
|
// for(i=0;i<vi->channels;i++){
|
|
// float *mdct =gmdct[i];
|
|
// sortindex[i]=alloca(sizeof(**sortindex)*n/2);
|
|
// _vp_noise_normalize_sort(psy_look,mdct,sortindex[i]);
|
|
// }
|
|
// }
|
|
//
|
|
// for(k=(FMOD_vorbis_bitrate_managed(vb)?0:PACKETBLOBS/2);
|
|
// k<=(FMOD_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 */
|
|
// FMOD_oggpack_write(opb,0,1);
|
|
// /* Encode the modenumber */
|
|
// /* Encode frame mode, pre,post windowsize, then dispatch */
|
|
// FMOD_oggpack_write(opb,modenumber,b->modebits);
|
|
// if(vb->W){
|
|
// FMOD_oggpack_write(opb,vb->lW,1);
|
|
// FMOD_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];
|
|
// float *mdct =gmdct[i];
|
|
// float *res =vb->pcm[i];
|
|
// int *ilogmask=ilogmaskch[i]=
|
|
// _FMOD_vorbis_block_alloc(context, vb,n/2*sizeof(**gmdct));
|
|
//
|
|
// 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[ilogmask[j]];
|
|
// _analysis_output(buf,seq,work,n/2,1,1,0);
|
|
// }
|
|
//#endif
|
|
// _vp_remove_floor(psy_look,
|
|
// mdct,
|
|
// ilogmask,
|
|
// res,
|
|
// ci->psy_g_param.sliding_lowpass[vb->W][k]);
|
|
//
|
|
// _vp_noise_normalize(psy_look,res,res+n/2,sortindex[i]);
|
|
//
|
|
//
|
|
//#if 0
|
|
// {
|
|
// char buf[80];
|
|
// float work[n/2];
|
|
// for(j=0;j<n/2;j++)
|
|
// work[j]=FLOOR1_fromdB_LOOKUP[ilogmask[j]]*(res+n/2)[j];
|
|
// sprintf(buf,"resI%c%d",i?'R':'L',k);
|
|
// _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 */
|
|
// if(info->coupling_steps){
|
|
// _vp_couple(k,
|
|
// &ci->psy_g_param,
|
|
// psy_look,
|
|
// info,
|
|
// vb->pcm,
|
|
// mag_memo,
|
|
// mag_sort,
|
|
// ilogmaskch,
|
|
// nonzero,
|
|
// ci->psy_g_param.sliding_lowpass[vb->W][k]);
|
|
// }
|
|
//
|
|
// /* classify and encode by submap */
|
|
// for(i=0;i<info->submaps;i++){
|
|
// int ch_in_bundle=0;
|
|
// ogg_int32_t **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;
|
|
// res_bundle[ch_in_bundle]=vb->pcm[j];
|
|
// couple_bundle[ch_in_bundle++]=vb->pcm[j]+n/2;
|
|
// }
|
|
// }
|
|
//
|
|
// classifications=_FMOD_residue_P[ci->residue_type[resnum]]->
|
|
// class(context, vb,b->residue[resnum],couple_bundle,zerobundle,ch_in_bundle);
|
|
//
|
|
// /* couple_bundle is destructively overwritten by
|
|
// the class function if some but not all of the channels are
|
|
// marked as silence; build a fresh copy */
|
|
// ch_in_bundle=0;
|
|
// for(j=0;j<vi->channels;j++)
|
|
// if(info->chmuxlist[j]==i)
|
|
// couple_bundle[ch_in_bundle++]=vb->pcm[j]+n/2;
|
|
//
|
|
// _FMOD_residue_P[ci->residue_type[resnum]]->
|
|
// forward(context, opb,vb,b->residue[resnum],
|
|
// couple_bundle,NULL,zerobundle,ch_in_bundle,classifications);
|
|
// }
|
|
//
|
|
// /* 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(void *context, 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;
|
|
ogg_int32_t 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]=_FMOD_floor_P[ci->floor_type[info->floorsubmap[submap]]]->
|
|
inverse1(context, vb,b->flr[info->floorsubmap[submap]]);
|
|
if(floormemo[i])
|
|
nonzero[i]=1;
|
|
else
|
|
nonzero[i]=0;
|
|
FMOD_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];
|
|
}
|
|
}
|
|
|
|
_FMOD_residue_P[ci->residue_type[info->residuesubmap[i]]]->
|
|
inverse(context, 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];
|
|
_FMOD_floor_P[ci->floor_type[info->floorsubmap[submap]]]->
|
|
inverse2(context, 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];
|
|
FMOD_mdct_backward(b->transform[vb->W][0],pcm,pcm);
|
|
}
|
|
|
|
/* all done! */
|
|
return(0);
|
|
}
|
|
|
|
/* export hooks */
|
|
const vorbis_func_mapping FMOD_mapping0_exportbundle={
|
|
NULL, /* &mapping0_pack, */
|
|
&mapping0_unpack,
|
|
&mapping0_free_info,
|
|
NULL, /* &mapping0_forward, */
|
|
&mapping0_inverse
|
|
};
|