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furnace/src/engine/sample.cpp
Natt Akuma bdc66ae33e SNES: add an option to not encode BRR with unstable filters 
This is useful for seeking to anywhere within the sample using sample offset commands
2024-06-22 16:40:06 +07:00

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/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2024 tildearrow and contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "sample.h"
#include "../ta-log.h"
#include "../fileutils.h"
#include <math.h>
#include <string.h>
#ifdef HAVE_SNDFILE
#include "sfWrapper.h"
#endif
#include "filter.h"
#include "bsr.h"
extern "C" {
#include "../../extern/adpcm/bs_codec.h"
#include "../../extern/adpcm/oki_codec.h"
#include "../../extern/adpcm/yma_codec.h"
#include "../../extern/adpcm/ymb_codec.h"
#include "../../extern/adpcm/ymz_codec.h"
}
#include "../../extern/adpcm-xq-s/adpcm-lib.h"
#include "brrUtils.h"
DivSampleHistory::~DivSampleHistory() {
if (data!=NULL) delete[] data;
}
void DivSample::putSampleData(SafeWriter* w) {
size_t blockStartSeek, blockEndSeek;
w->write("SMP2",4);
blockStartSeek=w->tell();
w->writeI(0);
w->writeString(name,false);
w->writeI(samples);
w->writeI(rate);
w->writeI(centerRate);
w->writeC(depth);
w->writeC(loopMode);
w->writeC(brrEmphasis);
w->writeC((dither?1:0)|(brrNoFilter?2:0));
w->writeI(loop?loopStart:-1);
w->writeI(loop?loopEnd:-1);
for (int i=0; i<DIV_MAX_SAMPLE_TYPE; i++) {
unsigned int out=0;
for (int j=0; j<DIV_MAX_CHIPS; j++) {
if (renderOn[i][j]) out|=1<<j;
}
w->writeI(out);
}
#ifdef TA_BIG_ENDIAN
// store 16-bit samples as little-endian
if (depth==DIV_SAMPLE_DEPTH_16BIT) {
unsigned char* sampleBuf=(unsigned char*)getCurBuf();
size_t bufLen=getCurBufLen();
for (size_t i=0; i<bufLen; i+=2) {
w->writeC(sampleBuf[i+1]);
w->writeC(sampleBuf[i]);
}
} else {
w->write(getCurBuf(),getCurBufLen());
}
#else
w->write(getCurBuf(),getCurBufLen());
#endif
blockEndSeek=w->tell();
w->seek(blockStartSeek,SEEK_SET);
w->writeI(blockEndSeek-blockStartSeek-4);
w->seek(0,SEEK_END);
}
// Delek why
static double samplePitchesSD[11]={
0.1666666666, 0.2, 0.25, 0.333333333, 0.5,
1,
2, 3, 4, 5, 6
};
DivDataErrors DivSample::readSampleData(SafeReader& reader, short version) {
int vol=0;
int pitch=0;
char magic[4];
reader.read(magic,4);
if (memcmp(magic,"SMPL",4)!=0 && memcmp(magic,"SMP2",4)!=0) {
logV("header is invalid: %c%c%c%c",magic[0],magic[1],magic[2],magic[3]);
return DIV_DATA_INVALID_HEADER;
}
bool isNewSample=(memcmp(magic,"SMP2",4)==0);
reader.readI();
if (!isNewSample) logV("(old sample)");
name=reader.readString();
samples=reader.readI();
if (!isNewSample) {
loopEnd=samples;
}
rate=reader.readI();
if (isNewSample) {
centerRate=reader.readI();
depth=(DivSampleDepth)reader.readC();
if (version>=123) {
loopMode=(DivSampleLoopMode)reader.readC();
} else {
loopMode=DIV_SAMPLE_LOOP_FORWARD;
reader.readC();
}
if (version>=129) {
brrEmphasis=reader.readC();
} else {
reader.readC();
}
if (version>=159) {
signed char c=reader.readC();
dither=c&1;
if (version>=213) brrNoFilter=c&2;
} else {
reader.readC();
}
loopStart=reader.readI();
loopEnd=reader.readI();
loop=(loopStart>=0)&&(loopEnd>=0);
for (int i=0; i<DIV_MAX_SAMPLE_TYPE; i++) {
unsigned int outMask=(unsigned int)reader.readI();
for (int j=0; j<DIV_MAX_CHIPS; j++) {
renderOn[i][j]=outMask&(1<<j);
}
}
} else {
if (version<58) {
vol=reader.readS();
pitch=reader.readS();
} else {
reader.readI();
}
depth=(DivSampleDepth)reader.readC();
// reserved
reader.readC();
// while version 32 stored this value, it was unused.
if (version>=38) {
centerRate=(unsigned short)reader.readS();
} else {
reader.readS();
}
if (version>=19) {
loopStart=reader.readI();
loop=(loopStart>=0)&&(loopEnd>=0);
} else {
reader.readI();
}
}
if (version>=58) { // modern sample
init(samples);
reader.read(getCurBuf(),getCurBufLen());
#ifdef TA_BIG_ENDIAN
// convert 16-bit samples to big-endian
if (depth==DIV_SAMPLE_DEPTH_16BIT) {
unsigned char* sampleBuf=(unsigned char*)getCurBuf();
size_t sampleBufLen=getCurBufLen();
for (size_t pos=0; pos<sampleBufLen; pos+=2) {
sampleBuf[pos]^=sampleBuf[pos+1];
sampleBuf[pos+1]^=sampleBuf[pos];
sampleBuf[pos]^=sampleBuf[pos+1];
}
}
#endif
} else { // legacy sample
int length=samples;
short* data=new short[length];
reader.read(data,2*length);
#ifdef TA_BIG_ENDIAN
// convert 16-bit samples to big-endian
for (int pos=0; pos<length; pos++) {
data[pos]=((unsigned short)data[pos]>>8)|((unsigned short)data[pos]<<8);
}
#endif
if (pitch!=5) {
logD("scaling from %d...",pitch);
}
// render data
if (depth!=DIV_SAMPLE_DEPTH_8BIT && depth!=DIV_SAMPLE_DEPTH_16BIT) {
logW("sample depth is wrong! (%d)",(int)depth);
depth=DIV_SAMPLE_DEPTH_16BIT;
}
samples=(double)samples/samplePitchesSD[pitch];
init(samples);
unsigned int k=0;
float mult=(float)(vol)/50.0f;
for (double j=0; j<length; j+=samplePitchesSD[pitch]) {
if (k>=samples) {
break;
}
if (depth==DIV_SAMPLE_DEPTH_8BIT) {
float next=(float)(data[(unsigned int)j]-0x80)*mult;
data8[k++]=fmin(fmax(next,-128),127);
} else {
float next=(float)data[(unsigned int)j]*mult;
data16[k++]=fmin(fmax(next,-32768),32767);
}
}
delete[] data;
}
return DIV_DATA_SUCCESS;
}
bool DivSample::isLoopable() {
return loop && ((loopStart>=0 && loopStart<loopEnd) && (loopEnd>loopStart && loopEnd<=(int)samples));
}
int DivSample::getSampleOffset(int offset, int length, DivSampleDepth depth) {
if ((length==0) || (offset==length)) {
int off=offset;
switch (depth) {
case DIV_SAMPLE_DEPTH_1BIT:
off=(offset+7)/8;
break;
case DIV_SAMPLE_DEPTH_1BIT_DPCM:
off=(offset+7)/8;
break;
case DIV_SAMPLE_DEPTH_YMZ_ADPCM:
off=(offset+1)/2;
break;
case DIV_SAMPLE_DEPTH_QSOUND_ADPCM:
off=(offset+1)/2;
break;
case DIV_SAMPLE_DEPTH_ADPCM_A:
off=(offset+1)/2;
break;
case DIV_SAMPLE_DEPTH_ADPCM_B:
off=(offset+1)/2;
break;
case DIV_SAMPLE_DEPTH_ADPCM_K:
off=(offset+1)/2;
break;
case DIV_SAMPLE_DEPTH_8BIT:
off=offset;
break;
case DIV_SAMPLE_DEPTH_BRR:
off=9*((offset+15)/16);
break;
case DIV_SAMPLE_DEPTH_VOX:
off=(offset+1)/2;
break;
case DIV_SAMPLE_DEPTH_MULAW:
off=offset;
break;
case DIV_SAMPLE_DEPTH_C219:
off=offset;
break;
case DIV_SAMPLE_DEPTH_IMA_ADPCM:
off=(offset+1)/2;
break;
case DIV_SAMPLE_DEPTH_16BIT:
off=offset*2;
break;
default:
break;
}
return off;
} else {
int off=offset;
int len=length;
switch (depth) {
case DIV_SAMPLE_DEPTH_1BIT:
off=(offset+7)/8;
len=(length+7)/8;
break;
case DIV_SAMPLE_DEPTH_1BIT_DPCM:
off=(offset+7)/8;
len=(length+7)/8;
break;
case DIV_SAMPLE_DEPTH_YMZ_ADPCM:
off=(offset+1)/2;
len=(length+1)/2;
break;
case DIV_SAMPLE_DEPTH_QSOUND_ADPCM:
off=(offset+1)/2;
len=(length+1)/2;
break;
case DIV_SAMPLE_DEPTH_ADPCM_A:
off=(offset+1)/2;
len=(length+1)/2;
break;
case DIV_SAMPLE_DEPTH_ADPCM_B:
off=(offset+1)/2;
len=(length+1)/2;
break;
case DIV_SAMPLE_DEPTH_ADPCM_K:
off=(offset+1)/2;
len=(length+1)/2;
break;
case DIV_SAMPLE_DEPTH_8BIT:
off=offset;
len=length;
break;
case DIV_SAMPLE_DEPTH_BRR:
off=9*((offset+15)/16);
len=9*((length+15)/16);
break;
case DIV_SAMPLE_DEPTH_VOX:
off=(offset+1)/2;
len=(length+1)/2;
break;
case DIV_SAMPLE_DEPTH_MULAW:
off=offset;
len=length;
break;
case DIV_SAMPLE_DEPTH_C219:
off=offset;
len=length;
break;
case DIV_SAMPLE_DEPTH_IMA_ADPCM:
off=(offset+1)/2;
len=(length+1)/2;
break;
case DIV_SAMPLE_DEPTH_16BIT:
off=offset*2;
len=length*2;
break;
default:
break;
}
return isLoopable()?off:len;
}
}
int DivSample::getLoopStartPosition(DivSampleDepth depth) {
return getSampleOffset(loopStart,0,depth);
}
int DivSample::getLoopEndPosition(DivSampleDepth depth) {
return getSampleOffset(loopEnd,samples,depth);
}
int DivSample::getEndPosition(DivSampleDepth depth) {
int off=samples;
switch (depth) {
case DIV_SAMPLE_DEPTH_1BIT:
off=length1;
break;
case DIV_SAMPLE_DEPTH_1BIT_DPCM:
off=lengthDPCM;
break;
case DIV_SAMPLE_DEPTH_YMZ_ADPCM:
off=lengthZ;
break;
case DIV_SAMPLE_DEPTH_QSOUND_ADPCM:
off=lengthQSoundA;
break;
case DIV_SAMPLE_DEPTH_ADPCM_A:
off=lengthA;
break;
case DIV_SAMPLE_DEPTH_ADPCM_B:
off=lengthB;
break;
case DIV_SAMPLE_DEPTH_ADPCM_K:
off=lengthK;
break;
case DIV_SAMPLE_DEPTH_8BIT:
off=length8;
break;
case DIV_SAMPLE_DEPTH_BRR:
off=lengthBRR;
break;
case DIV_SAMPLE_DEPTH_VOX:
off=lengthVOX;
break;
case DIV_SAMPLE_DEPTH_MULAW:
off=lengthMuLaw;
break;
case DIV_SAMPLE_DEPTH_C219:
off=lengthC219;
break;
case DIV_SAMPLE_DEPTH_IMA_ADPCM:
off=lengthIMA;
break;
case DIV_SAMPLE_DEPTH_16BIT:
off=length16;
break;
default:
break;
}
return off;
}
void DivSample::setSampleCount(unsigned int count) {
samples=count;
if ((!isLoopable()) || loopEnd<0 || loopEnd>(int)samples) loopEnd=samples;
}
bool DivSample::save(const char* path) {
#ifndef HAVE_SNDFILE
logE("Furnace was not compiled with libsndfile!");
return false;
#else
SNDFILE* f;
SF_INFO si;
SFWrapper sfWrap;
memset(&si,0,sizeof(SF_INFO));
if (length16<1) return false;
si.channels=1;
si.samplerate=centerRate;
switch (depth) {
case DIV_SAMPLE_DEPTH_8BIT: // 8-bit
si.format=SF_FORMAT_PCM_U8|SF_FORMAT_WAV;
break;
default: // 16-bit
si.format=SF_FORMAT_PCM_16|SF_FORMAT_WAV;
break;
}
f=sfWrap.doOpen(path,SFM_WRITE,&si);
if (f==NULL) {
logE("could not open wave file for saving! %s",sf_error_number(sf_error(f)));
return false;
}
SF_INSTRUMENT inst;
memset(&inst, 0, sizeof(inst));
inst.gain = 1;
// TODO: fix
short pitch = (0x3c * 100) + 50 - (log2((double)centerRate/8363.0) * 12.0 * 100.0);
inst.basenote = pitch / 100;
inst.detune = 50 - (pitch % 100);
inst.velocity_hi = 0x7f;
inst.key_hi = 0x7f;
if(isLoopable())
{
inst.loop_count = 1;
inst.loops[0].mode = (int)loopMode+SF_LOOP_FORWARD;
inst.loops[0].start = loopStart;
inst.loops[0].end = loopEnd;
}
sf_command(f, SFC_SET_INSTRUMENT, &inst, sizeof(inst));
switch (depth) {
case DIV_SAMPLE_DEPTH_8BIT: {
// convert from signed to unsigned
unsigned char* buf=new unsigned char[length8];
for (size_t i=0; i<length8; i++) {
buf[i]=data8[i]^0x80;
}
sf_write_raw(f,buf,length8);
delete[] buf;
break;
}
default:
sf_writef_short(f,data16,samples);
break;
}
sfWrap.doClose();
return true;
#endif
}
bool DivSample::saveRaw(const char* path) {
if (samples<1) {
logE("sample is empty though!");
return false;
}
FILE* f=ps_fopen(path,"wb");
if (f==NULL) {
logE("could not save sample: %s!",strerror(errno));
return false;
}
if (depth==DIV_SAMPLE_DEPTH_BRR) {
if (isLoopable()) {
unsigned short loopPos=getLoopStartPosition(DIV_SAMPLE_DEPTH_BRR);
fputc(loopPos&0xff,f);
fputc(loopPos>>8,f);
} else {
fputc(0,f);
fputc(0,f);
}
}
if (fwrite(getCurBuf(),1,getCurBufLen(),f)!=getCurBufLen()) {
logW("did not write entire instrument!");
}
fclose(f);
return true;
}
// 16-bit memory is padded to 512, to make things easier for ADPCM-A/B.
bool DivSample::initInternal(DivSampleDepth d, int count) {
logV("initInternal(%d,%d)",(int)d,count);
switch (d) {
case DIV_SAMPLE_DEPTH_1BIT: // 1-bit
if (data1!=NULL) delete[] data1;
length1=(count+7)/8;
data1=new unsigned char[length1];
memset(data1,0,length1);
break;
case DIV_SAMPLE_DEPTH_1BIT_DPCM: // DPCM
if (dataDPCM!=NULL) delete[] dataDPCM;
lengthDPCM=1+((((count-1)/8)+15)&(~15));
dataDPCM=new unsigned char[lengthDPCM];
memset(dataDPCM,0xaa,lengthDPCM);
break;
case DIV_SAMPLE_DEPTH_YMZ_ADPCM: // YMZ ADPCM
if (dataZ!=NULL) delete[] dataZ;
lengthZ=(count+1)/2;
// for padding AICA sample
dataZ=new unsigned char[(lengthZ+3)&(~0x03)];
memset(dataZ,0,(lengthZ+3)&(~0x03));
break;
case DIV_SAMPLE_DEPTH_QSOUND_ADPCM: // QSound ADPCM
if (dataQSoundA!=NULL) delete[] dataQSoundA;
lengthQSoundA=(count+1)/2;
dataQSoundA=new unsigned char[lengthQSoundA];
memset(dataQSoundA,0,lengthQSoundA);
break;
case DIV_SAMPLE_DEPTH_ADPCM_A: // ADPCM-A
if (dataA!=NULL) delete[] dataA;
lengthA=(count+1)/2;
dataA=new unsigned char[(lengthA+255)&(~0xff)];
memset(dataA,0,(lengthA+255)&(~0xff));
break;
case DIV_SAMPLE_DEPTH_ADPCM_B: // ADPCM-B
if (dataB!=NULL) delete[] dataB;
lengthB=(count+1)/2;
dataB=new unsigned char[(lengthB+255)&(~0xff)];
memset(dataB,0,(lengthB+255)&(~0xff));
break;
case DIV_SAMPLE_DEPTH_ADPCM_K: // K05 ADPCM
if (dataK!=NULL) delete[] dataK;
lengthK=(count+1)/2;
dataK=new unsigned char[(lengthK+255)&(~0xff)];
memset(dataK,0,(lengthK+255)&(~0xff));
break;
case DIV_SAMPLE_DEPTH_8BIT: // 8-bit
if (data8!=NULL) delete[] data8;
length8=count;
// for padding X1-010 sample
data8=new signed char[(count+4095)&(~0xfff)];
memset(data8,0,(count+4095)&(~0xfff));
break;
case DIV_SAMPLE_DEPTH_BRR: // BRR
if (dataBRR!=NULL) delete[] dataBRR;
lengthBRR=9*((count+15)/16);
dataBRR=new unsigned char[lengthBRR+9];
memset(dataBRR,0,lengthBRR+9);
break;
case DIV_SAMPLE_DEPTH_VOX: // VOX
if (dataVOX!=NULL) delete[] dataVOX;
lengthVOX=(count+1)/2;
dataVOX=new unsigned char[lengthVOX];
memset(dataVOX,0,lengthVOX);
break;
case DIV_SAMPLE_DEPTH_MULAW: // 8-bit µ-law
if (dataMuLaw!=NULL) delete[] dataMuLaw;
lengthMuLaw=count;
dataMuLaw=new unsigned char[(count+4095)&(~0xfff)];
memset(dataMuLaw,0,(count+4095)&(~0xfff));
break;
case DIV_SAMPLE_DEPTH_C219: // 8-bit C219 "μ-law"
if (dataC219!=NULL) delete[] dataC219;
lengthC219=count;
dataC219=new unsigned char[(count+4095)&(~0xfff)];
memset(dataC219,0,(count+4095)&(~0xfff));
break;
case DIV_SAMPLE_DEPTH_IMA_ADPCM: // IMA ADPCM
if (dataIMA!=NULL) delete[] dataIMA;
lengthIMA=4+((count+1)/2);
dataIMA=new unsigned char[lengthIMA];
memset(dataIMA,0,lengthIMA);
break;
case DIV_SAMPLE_DEPTH_16BIT: // 16-bit
if (data16!=NULL) delete[] data16;
length16=count*2;
data16=new short[(count+511)&(~0x1ff)];
memset(data16,0,((count+511)&(~0x1ff))*sizeof(short));
break;
default:
return false;
}
return true;
}
bool DivSample::init(unsigned int count) {
if (!initInternal(depth,count)) return false;
setSampleCount(count);
return true;
}
bool DivSample::resize(unsigned int count) {
if (depth==DIV_SAMPLE_DEPTH_8BIT) {
if (data8!=NULL) {
signed char* oldData8=data8;
data8=NULL;
initInternal(DIV_SAMPLE_DEPTH_8BIT,count);
memcpy(data8,oldData8,MIN(count,samples));
delete[] oldData8;
} else {
initInternal(DIV_SAMPLE_DEPTH_8BIT,count);
}
setSampleCount(count);
return true;
} else if (depth==DIV_SAMPLE_DEPTH_16BIT) {
if (data16!=NULL) {
short* oldData16=data16;
data16=NULL;
initInternal(DIV_SAMPLE_DEPTH_16BIT,count);
memcpy(data16,oldData16,sizeof(short)*MIN(count,samples));
delete[] oldData16;
} else {
initInternal(DIV_SAMPLE_DEPTH_16BIT,count);
}
setSampleCount(count);
return true;
}
return false;
}
bool DivSample::strip(unsigned int begin, unsigned int end) {
if (begin>samples) begin=samples;
if (end>samples) end=samples;
int count=samples-(end-begin);
if (count<=0) {
loopStart=-1;
loopEnd=-1;
loop=false;
return resize(0);
}
if (loopStart>(int)begin && loopEnd<(int)end) {
loopStart=-1;
loopEnd=-1;
loop=false;
} else {
if (loopStart<(int)end && loopStart>(int)begin) {
loopStart=end;
}
if (loopStart>(int)begin && loopEnd>(int)begin) {
loopStart-=end-begin;
loopEnd-=end-begin;
if (loopEnd<0) loopEnd=0;
if (loopStart<0) loopStart=0;
} else if (loopEnd>(int)begin) {
loopEnd=begin;
}
}
if (loopStart>loopEnd) {
loopStart=-1;
loopEnd=-1;
loop=false;
}
if (depth==DIV_SAMPLE_DEPTH_8BIT) {
if (data8!=NULL) {
signed char* oldData8=data8;
data8=NULL;
initInternal(DIV_SAMPLE_DEPTH_8BIT,count);
if (begin>0) {
memcpy(data8,oldData8,begin);
}
if (samples-end>0) {
memcpy(data8+begin,oldData8+end,samples-end);
}
delete[] oldData8;
} else {
// do nothing
return true;
}
setSampleCount(count);
return true;
} else if (depth==DIV_SAMPLE_DEPTH_16BIT) {
if (data16!=NULL) {
short* oldData16=data16;
data16=NULL;
initInternal(DIV_SAMPLE_DEPTH_16BIT,count);
if (begin>0) {
memcpy(data16,oldData16,sizeof(short)*begin);
}
if (samples-end>0) {
memcpy(&(data16[begin]),&(oldData16[end]),sizeof(short)*(samples-end));
}
delete[] oldData16;
} else {
// do nothing
return true;
}
setSampleCount(count);
return true;
}
return false;
}
bool DivSample::trim(unsigned int begin, unsigned int end) {
int count=end-begin;
if (count==0) return true;
if (begin==0 && end==samples) return true;
if (((int)begin<loopStart && (int)end<loopStart) || ((int)begin>loopEnd && (int)end>loopEnd)) {
loopStart=-1;
loopEnd=-1;
loop=false;
} else {
loopStart-=begin;
loopEnd-=begin;
if (loopStart<0) loopStart=0;
if (loopEnd>count) loopEnd=count;
}
if (depth==DIV_SAMPLE_DEPTH_8BIT) {
if (data8!=NULL) {
signed char* oldData8=data8;
data8=NULL;
initInternal(DIV_SAMPLE_DEPTH_8BIT,count);
memcpy(data8,oldData8+begin,count);
delete[] oldData8;
} else {
// do nothing
return true;
}
setSampleCount(count);
return true;
} else if (depth==DIV_SAMPLE_DEPTH_16BIT) {
if (data16!=NULL) {
short* oldData16=data16;
data16=NULL;
initInternal(DIV_SAMPLE_DEPTH_16BIT,count);
memcpy(data16,&(oldData16[begin]),sizeof(short)*count);
delete[] oldData16;
} else {
// do nothing
return true;
}
setSampleCount(count);
return true;
}
return false;
}
bool DivSample::insert(unsigned int pos, unsigned int length) {
unsigned int count=samples+length;
if (depth==DIV_SAMPLE_DEPTH_8BIT) {
if (data8!=NULL) {
signed char* oldData8=data8;
data8=NULL;
initInternal(DIV_SAMPLE_DEPTH_8BIT,count);
if (pos>0) {
memcpy(data8,oldData8,pos);
}
if (count-pos-length>0) {
memcpy(data8+pos+length,oldData8+pos,count-pos-length);
}
delete[] oldData8;
} else {
initInternal(DIV_SAMPLE_DEPTH_8BIT,count);
}
setSampleCount(count);
return true;
} else if (depth==DIV_SAMPLE_DEPTH_16BIT) {
if (data16!=NULL) {
short* oldData16=data16;
data16=NULL;
initInternal(DIV_SAMPLE_DEPTH_16BIT,count);
if (pos>0) {
memcpy(data16,oldData16,sizeof(short)*pos);
}
if (count-pos-length>0) {
memcpy(&(data16[pos+length]),&(oldData16[pos]),sizeof(short)*(count-pos-length));
}
delete[] oldData16;
} else {
initInternal(DIV_SAMPLE_DEPTH_16BIT,count);
}
setSampleCount(count);
return true;
}
return false;
}
void DivSample::convert(DivSampleDepth newDepth, unsigned int formatMask) {
render(formatMask|(1U<<newDepth));
depth=newDepth;
switch (depth) {
case DIV_SAMPLE_DEPTH_1BIT:
setSampleCount((samples+7)&(~7));
break;
case DIV_SAMPLE_DEPTH_1BIT_DPCM:
if (samples) {
setSampleCount((1+((((samples-1)/8)+15)&(~15)))<<3);
} else {
setSampleCount(8);
}
break;
case DIV_SAMPLE_DEPTH_YMZ_ADPCM:
setSampleCount(((lengthZ+3)&(~0x03))*2);
break;
case DIV_SAMPLE_DEPTH_QSOUND_ADPCM: // QSound ADPCM
setSampleCount((samples+1)&(~1));
break;
case DIV_SAMPLE_DEPTH_ADPCM_A: // ADPCM-A
setSampleCount((samples+1)&(~1));
break;
case DIV_SAMPLE_DEPTH_ADPCM_B: // ADPCM-B
setSampleCount((samples+1)&(~1));
break;
case DIV_SAMPLE_DEPTH_ADPCM_K: // K05 ADPCM
setSampleCount((samples+1)&(~1));
break;
case DIV_SAMPLE_DEPTH_BRR: // BRR
setSampleCount(16*(lengthBRR/9));
break;
case DIV_SAMPLE_DEPTH_VOX: // VOX
setSampleCount((samples+1)&(~1));
break;
default:
break;
}
render(formatMask|(1U<<newDepth));
}
#define RESAMPLE_BEGIN \
if (samples<1) return true; \
int finalCount=(double)samples*(tRate/sRate); \
signed char* oldData8=data8; \
short* oldData16=data16; \
if (depth==DIV_SAMPLE_DEPTH_16BIT) { \
if (data16!=NULL) { \
data16=NULL; \
initInternal(DIV_SAMPLE_DEPTH_16BIT,finalCount); \
} \
} else if (depth==DIV_SAMPLE_DEPTH_8BIT) { \
if (data8!=NULL) { \
data8=NULL; \
initInternal(DIV_SAMPLE_DEPTH_8BIT,finalCount); \
} \
} else { \
return false; \
}
#define RESAMPLE_END \
if (loopStart>=0) loopStart=(double)loopStart*(tRate/sRate); \
if (loopEnd>=0) loopEnd=(double)loopEnd*(tRate/sRate); \
centerRate=(int)((double)centerRate*(tRate/sRate)); \
rate=(int)((double)rate*(tRate/sRate)); \
samples=finalCount; \
if (depth==DIV_SAMPLE_DEPTH_16BIT) { \
delete[] oldData16; \
} else if (depth==DIV_SAMPLE_DEPTH_8BIT) { \
delete[] oldData8; \
}
bool DivSample::resampleNone(double sRate, double tRate) {
RESAMPLE_BEGIN;
if (depth==DIV_SAMPLE_DEPTH_16BIT) {
for (int i=0; i<finalCount; i++) {
unsigned int pos=(unsigned int)((double)i*(sRate/tRate));
if (pos>=samples) {
data16[i]=0;
} else {
data16[i]=oldData16[pos];
}
}
} else if (depth==DIV_SAMPLE_DEPTH_8BIT) {
for (int i=0; i<finalCount; i++) {
unsigned int pos=(unsigned int)((double)i*(sRate/tRate));
if (pos>=samples) {
data8[i]=0;
} else {
data8[i]=oldData8[pos];
}
}
}
RESAMPLE_END;
return true;
}
bool DivSample::resampleLinear(double sRate, double tRate) {
RESAMPLE_BEGIN;
double posFrac=0;
unsigned int posInt=0;
double factor=sRate/tRate;
if (depth==DIV_SAMPLE_DEPTH_16BIT) {
for (int i=0; i<finalCount; i++) {
short s1=(posInt>=samples)?0:oldData16[posInt];
short s2=(posInt+1>=samples)?((loopStart>=0 && loopStart<(int)samples)?oldData16[loopStart]:0):oldData16[posInt+1];
data16[i]=s1+(float)(s2-s1)*posFrac;
posFrac+=factor;
while (posFrac>=1.0) {
posFrac-=1.0;
posInt++;
}
}
} else if (depth==DIV_SAMPLE_DEPTH_8BIT) {
for (int i=0; i<finalCount; i++) {
short s1=(posInt>=samples)?0:oldData8[posInt];
short s2=(posInt+1>=samples)?((loopStart>=0 && loopStart<(int)samples)?oldData8[loopStart]:0):oldData8[posInt+1];
data8[i]=s1+(float)(s2-s1)*posFrac;
posFrac+=factor;
while (posFrac>=1.0) {
posFrac-=1.0;
posInt++;
}
}
}
RESAMPLE_END;
return true;
}
bool DivSample::resampleCubic(double sRate, double tRate) {
RESAMPLE_BEGIN;
double posFrac=0;
unsigned int posInt=0;
double factor=sRate/tRate;
float* cubicTable=DivFilterTables::getCubicTable();
if (depth==DIV_SAMPLE_DEPTH_16BIT) {
for (int i=0; i<finalCount; i++) {
unsigned int n=((unsigned int)(posFrac*1024.0))&1023;
float* t=&cubicTable[n<<2];
float s0=(posInt<1)?0:oldData16[posInt-1];
float s1=(posInt>=samples)?0:oldData16[posInt];
float s2=(posInt+1>=samples)?((loopStart>=0 && loopStart<(int)samples)?oldData16[loopStart]:0):oldData16[posInt+1];
float s3=(posInt+2>=samples)?((loopStart>=0 && loopStart<(int)samples)?oldData16[loopStart]:0):oldData16[posInt+2];
float result=s0*t[0]+s1*t[1]+s2*t[2]+s3*t[3];
if (result<-32768) result=-32768;
if (result>32767) result=32767;
data16[i]=result;
posFrac+=factor;
while (posFrac>=1.0) {
posFrac-=1.0;
posInt++;
}
}
} else if (depth==DIV_SAMPLE_DEPTH_8BIT) {
for (int i=0; i<finalCount; i++) {
unsigned int n=((unsigned int)(posFrac*1024.0))&1023;
float* t=&cubicTable[n<<2];
float s0=(posInt<1)?0:oldData8[posInt-1];
float s1=(posInt>=samples)?0:oldData8[posInt];
float s2=(posInt+1>=samples)?((loopStart>=0 && loopStart<(int)samples)?oldData8[loopStart]:0):oldData8[posInt+1];
float s3=(posInt+2>=samples)?((loopStart>=0 && loopStart<(int)samples)?oldData8[loopStart]:0):oldData8[posInt+2];
float result=s0*t[0]+s1*t[1]+s2*t[2]+s3*t[3];
if (result<-128) result=-128;
if (result>127) result=127;
data8[i]=result;
posFrac+=factor;
while (posFrac>=1.0) {
posFrac-=1.0;
posInt++;
}
}
}
RESAMPLE_END;
return true;
}
bool DivSample::resampleBlep(double sRate, double tRate) {
RESAMPLE_BEGIN;
double posFrac=0;
unsigned int posInt=0;
double factor=tRate/sRate;
float* sincITable=DivFilterTables::getSincIntegralTable();
float* floatData=new float[finalCount];
memset(floatData,0,finalCount*sizeof(float));
if (depth==DIV_SAMPLE_DEPTH_16BIT) {
memset(data16,0,finalCount*sizeof(short));
for (int i=0; i<finalCount; i++) {
if (posInt<samples) {
data16[i]=oldData16[posInt];
}
posFrac+=1.0;
while (posFrac>=1.0) {
unsigned int n=((unsigned int)(posFrac*8192.0))&8191;
posFrac-=factor;
posInt++;
float* t1=&sincITable[(8191-n)<<3];
float* t2=&sincITable[n<<3];
float delta=oldData16[posInt]-oldData16[posInt-1];
for (int j=0; j<8; j++) {
if (i-j>0) {
floatData[i-j]+=t1[j]*-delta;
}
if (i+j+1<finalCount) {
floatData[i+j+1]+=t2[j]*delta;
}
}
}
}
for (int i=0; i<finalCount; i++) {
float result=floatData[i]+data16[i];
if (result<-32768) result=-32768;
if (result>32767) result=32767;
data16[i]=round(result);
}
} else if (depth==DIV_SAMPLE_DEPTH_8BIT) {
memset(data8,0,finalCount);
for (int i=0; i<finalCount; i++) {
if (posInt<samples) {
data8[i]=oldData8[posInt];
}
posFrac+=1.0;
while (posFrac>=1.0) {
unsigned int n=((unsigned int)(posFrac*8192.0))&8191;
posFrac-=factor;
posInt++;
float* t1=&sincITable[(8191-n)<<3];
float* t2=&sincITable[n<<3];
float delta=oldData8[posInt]-oldData8[posInt-1];
for (int j=0; j<8; j++) {
if (i-j>0) {
floatData[i-j]+=t1[j]*-delta;
}
if (i+j+1<finalCount) {
floatData[i+j+1]+=t2[j]*delta;
}
}
}
}
for (int i=0; i<finalCount; i++) {
float result=floatData[i]+data8[i];
if (result<-128) result=-128;
if (result>127) result=127;
data8[i]=round(result);
}
}
delete[] floatData;
RESAMPLE_END;
return true;
}
bool DivSample::resampleSinc(double sRate, double tRate) {
RESAMPLE_BEGIN;
double posFrac=0;
unsigned int posInt=0;
double factor=sRate/tRate;
float* sincTable=DivFilterTables::getSincTable();
float s[16];
memset(s,0,16*sizeof(float));
if (depth==DIV_SAMPLE_DEPTH_16BIT) {
for (int i=0; i<finalCount+8; i++) {
unsigned int n=((unsigned int)(posFrac*8192.0))&8191;
float result=0;
float* t1=&sincTable[(8191-n)<<3];
float* t2=&sincTable[n<<3];
for (int j=0; j<8; j++) {
result+=s[j]*t2[7-j];
result+=s[8+j]*t1[j];
}
if (result<-32768) result=-32768;
if (result>32767) result=32767;
if (i>=8) {
data16[i-8]=result;
}
posFrac+=factor;
while (posFrac>=1.0) {
posFrac-=1.0;
posInt++;
for (int j=0; j<15; j++) s[j]=s[j+1];
s[15]=(posInt>=samples)?0:oldData16[posInt];
}
}
} else if (depth==DIV_SAMPLE_DEPTH_8BIT) {
for (int i=0; i<finalCount+8; i++) {
unsigned int n=((unsigned int)(posFrac*8192.0))&8191;
float result=0;
float* t1=&sincTable[(8191-n)<<3];
float* t2=&sincTable[n<<3];
for (int j=0; j<8; j++) {
result+=s[j]*t2[7-j];
result+=s[8+j]*t1[j];
}
if (result<-128) result=-128;
if (result>127) result=127;
if (i>=8) {
data8[i-8]=result;
}
posFrac+=factor;
while (posFrac>=1.0) {
posFrac-=1.0;
posInt++;
for (int j=0; j<15; j++) s[j]=s[j+1];
s[15]=(posInt>=samples)?0:oldData8[posInt];
}
}
}
RESAMPLE_END;
return true;
}
bool DivSample::resample(double sRate, double tRate, int filter) {
if (depth!=DIV_SAMPLE_DEPTH_8BIT && depth!=DIV_SAMPLE_DEPTH_16BIT) return false;
switch (filter) {
case DIV_RESAMPLE_NONE:
return resampleNone(sRate,tRate);
break;
case DIV_RESAMPLE_LINEAR:
return resampleLinear(sRate,tRate);
break;
case DIV_RESAMPLE_CUBIC:
return resampleCubic(sRate,tRate);
break;
case DIV_RESAMPLE_BLEP:
return resampleBlep(sRate,tRate);
break;
case DIV_RESAMPLE_SINC:
return resampleSinc(sRate,tRate);
break;
case DIV_RESAMPLE_BEST:
if (tRate>sRate) {
return resampleSinc(sRate,tRate);
} else {
return resampleBlep(sRate,tRate);
}
break;
}
return false;
}
#define NOT_IN_FORMAT(x) (depth!=x && formatMask&(1U<<(unsigned int)x))
union IntFloat {
unsigned int i;
float f;
};
const short c219Table[256]={
0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, 480,
512, 576, 640, 704, 768, 832, 896, 960, 1024, 1152, 1280, 1408, 1536, 1664, 1792, 1920,
2048, 2176, 2304, 2432, 2560, 2688, 2816, 2944, 3072, 3200, 3328, 3456, 3584, 3712, 3840, 3968,
4096, 4352, 4608, 4864, 5120, 5376, 5632, 5888, 6144, 6400, 6656, 6912, 7168, 7424, 7680, 7936,
8192, 8448, 8704, 8960, 9216, 9472, 9728, 9984, 10240, 10496, 10752, 11008, 11264, 11520, 11776, 12032,
12288, 12544, 12800, 13056, 13312, 13568, 13824, 14080, 14336, 14592, 14848, 15104, 15360, 15616, 15872, 16128,
16384, 16640, 16896, 17152, 17408, 17920, 18432, 18944, 19456, 19968, 20480, 20992, 21504, 22016, 22528, 23040,
23552, 24064, 24576, 25088, 25600, 26112, 26624, 27136, 27648, 28160, 28672, 29184, 29696, 30208, 30720, 31232,
-32, -64, -96, -128, -160, -192, -224, -256, -288, -320, -352, -384, -416, -448, -480, -512,
-544, -608, -672, -736, -800, -864, -928, -992, -1056, -1184, -1312, -1440, -1568, -1696, -1824, -1952,
-2080, -2208, -2336, -2464, -2592, -2720, -2848, -2976, -3104, -3232, -3360, -3488, -3616, -3744, -3872, -4000,
-4128, -4384, -4640, -4896, -5152, -5408, -5664, -5920, -6176, -6432, -6688, -6944, -7200, -7456, -7712, -7968,
-8224, -8480, -8736, -8992, -9248, -9504, -9760, -10016, -10272, -10528, -10784, -11040, -11296, -11552, -11808, -12064,
-12320, -12576, -12832, -13088, -13344, -13600, -13856, -14112, -14368, -14624, -14880, -15136, -15392, -15648, -15904, -16160,
-16416, -16672, -16928, -17184, -17440, -17952, -18464, -18976, -19488, -20000, -20512, -21024, -21536, -22048, -22560, -23072,
-23584, -24096, -24608, -25120, -25632, -26144, -26656, -27168, -27680, -28192, -28704, -29216, -29728, -30240, -30752, -31264
};
unsigned char c219HighBitPos[16]={
0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 24, 24, 48, 48, 48, 48
};
unsigned char c219ShiftToVal[16]={
5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 8
};
signed char adpcmKTable[16]={
0, 1, 2, 4, 8, 16, 32, 64, -128, -64, -32, -16, -8, -4, -2, -1
};
void DivSample::render(unsigned int formatMask) {
// step 1: convert to 16-bit if needed
if (depth!=DIV_SAMPLE_DEPTH_16BIT) {
if (!initInternal(DIV_SAMPLE_DEPTH_16BIT,samples)) return;
switch (depth) {
case DIV_SAMPLE_DEPTH_1BIT: // 1-bit
for (unsigned int i=0; i<samples; i++) {
data16[i]=((data1[i>>3]>>(i&7))&1)?0x7fff:-0x7fff;
}
break;
case DIV_SAMPLE_DEPTH_1BIT_DPCM: { // DPCM
int accum=0;
for (unsigned int i=0; i<samples; i++) {
accum+=((dataDPCM[i>>3]>>(i&7))&1)?1:-1;
if (accum>63) accum=63;
if (accum<-64) accum=-64;
data16[i]=accum*512;
}
break;
}
case DIV_SAMPLE_DEPTH_YMZ_ADPCM: // YMZ ADPCM
ymz_decode(dataZ,data16,samples);
break;
case DIV_SAMPLE_DEPTH_QSOUND_ADPCM: // QSound ADPCM
bs_decode(dataQSoundA,data16,samples);
break;
case DIV_SAMPLE_DEPTH_ADPCM_A: // ADPCM-A
yma_decode(dataA,data16,samples);
break;
case DIV_SAMPLE_DEPTH_ADPCM_B: // ADPCM-B
ymb_decode(dataB,data16,samples);
break;
case DIV_SAMPLE_DEPTH_ADPCM_K: { // K05 ADPCM
signed char s=0;
for (unsigned int i=0; i<samples; i++) {
unsigned char nibble=dataK[i>>1];
if (i&1) { // TODO: is this right?
nibble>>=4;
} else {
nibble&=15;
}
s+=adpcmKTable[nibble];
data16[i]=s<<8;
}
break;
}
case DIV_SAMPLE_DEPTH_8BIT: // 8-bit PCM
for (unsigned int i=0; i<samples; i++) {
data16[i]=data8[i]<<8;
}
break;
case DIV_SAMPLE_DEPTH_BRR: // BRR
brrDecode(dataBRR,data16,lengthBRR,brrEmphasis);
break;
case DIV_SAMPLE_DEPTH_VOX: // VOX
oki_decode(dataVOX,data16,samples);
break;
case DIV_SAMPLE_DEPTH_MULAW: // 8-bit µ-law PCM
for (unsigned int i=0; i<samples; i++) {
IntFloat s;
s.i=(dataMuLaw[i]^0xff);
s.i=0x3f800000+(((s.i<<24)&0x80000000)|((s.i&0x7f)<<19));
data16[i]=(short)(s.f*128.0f);
}
break;
case DIV_SAMPLE_DEPTH_C219: // 8-bit C219 "μ-law" PCM
for (unsigned int i=0; i<samples; i++) {
data16[i]=c219Table[dataC219[i]&0x7f];
if (dataC219[i]&0x80) data16[i]=-data16[i];
}
break;
case DIV_SAMPLE_DEPTH_IMA_ADPCM: // IMA ADPCM
if (adpcm_decode_block(data16,dataIMA,lengthIMA,samples)==0) logE("oh crap!");
break;
default:
return;
}
}
// step 2: render to other formats
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_1BIT)) { // 1-bit
if (!initInternal(DIV_SAMPLE_DEPTH_1BIT,samples)) return;
for (unsigned int i=0; i<samples; i++) {
if (data16[i]>0) {
data1[i>>3]|=1<<(i&7);
}
}
}
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_1BIT_DPCM)) { // DPCM
if (!initInternal(DIV_SAMPLE_DEPTH_1BIT_DPCM,samples)) return;
int accum=63;
int next=63;
for (unsigned int i=0; (i<samples && (i>>3)<lengthDPCM); i++) {
next=((unsigned short)(data16[i]^0x8000))>>9;
if (next>accum) {
dataDPCM[i>>3]|=1<<(i&7);
accum++;
} else {
dataDPCM[i>>3]&=~(1<<(i&7));
accum--;
}
if (accum<0) accum=0;
if (accum>127) accum=127;
}
}
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_YMZ_ADPCM)) { // YMZ ADPCM
if (!initInternal(DIV_SAMPLE_DEPTH_YMZ_ADPCM,samples)) return;
ymz_encode(data16,dataZ,(samples+7)&(~0x7));
}
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_QSOUND_ADPCM)) { // QSound ADPCM
if (!initInternal(DIV_SAMPLE_DEPTH_QSOUND_ADPCM,samples)) return;
bs_encode(data16,dataQSoundA,samples);
}
// TODO: pad to 256.
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_ADPCM_A)) { // ADPCM-A
if (!initInternal(DIV_SAMPLE_DEPTH_ADPCM_A,samples)) return;
yma_encode(data16,dataA,(samples+511)&(~0x1ff));
}
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_ADPCM_B)) { // ADPCM-B
if (!initInternal(DIV_SAMPLE_DEPTH_ADPCM_B,samples)) return;
ymb_encode(data16,dataB,(samples+511)&(~0x1ff));
}
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_ADPCM_K)) { // K05 ADPCM
if (!initInternal(DIV_SAMPLE_DEPTH_ADPCM_K,samples)) return;
signed char accum=0;
unsigned char out=0;
for (unsigned int i=0; i<samples; i++) {
signed char target=data16[i]>>8;
short delta=target-accum;
unsigned char next=0;
if (delta!=0) {
int b=bsr((delta>=0)?delta:-delta);
if (delta>=0) {
if (b>7) b=7;
next=b&15;
// test previous
if (next>1) {
const signed char t1=accum+adpcmKTable[next];
const signed char t2=accum+adpcmKTable[next-1];
const signed char d1=((t1-target)<0)?(target-t1):(t1-target);
const signed char d2=((t2-target)<0)?(target-t2):(t2-target);
if (d2<d1) next--;
}
} else {
if (b>8) b=8;
next=(16-b)&15;
// test next
if (next<15) {
const signed char t1=accum+adpcmKTable[next];
const signed char t2=accum+adpcmKTable[next+1];
const signed char d1=((t1-target)<0)?(target-t1):(t1-target);
const signed char d2=((t2-target)<0)?(target-t2):(t2-target);
if (d2<d1) next++;
}
}
/*if (accum+adpcmKTable[next]>=128 || accum+adpcmKTable[next]<-128) {
if (delta>=0) {
next--;
} else {
next++;
if (next>15) next=15;
}
}*/
}
out>>=4;
out|=next<<4;
accum+=adpcmKTable[next];
if (i&1) {
dataK[i>>1]=out;
out=0;
}
}
}
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_8BIT)) { // 8-bit PCM
if (!initInternal(DIV_SAMPLE_DEPTH_8BIT,samples)) return;
if (dither) {
unsigned short lfsr=0x6438;
unsigned short lfsr1=0x1283;
signed char errorLast=0;
signed char errorCur=0;
for (unsigned int i=0; i<samples; i++) {
signed char val=CLAMP(data16[i]+128,-32768,32767)>>8;
errorLast=errorCur;
errorCur=(val<<8)-data16[i];
data8[i]=CLAMP(val-((((errorLast+errorCur)>>1)+(lfsr&0xff))>>8),-128,127);
lfsr=(lfsr<<1)|(((lfsr>>1)^(lfsr>>2)^(lfsr>>4)^(lfsr>>15))&1);
lfsr1=(lfsr1<<1)|(((lfsr1>>1)^(lfsr1>>2)^(lfsr1>>4)^(lfsr1>>15))&1);
}
} else {
for (unsigned int i=0; i<samples; i++) {
data8[i]=data16[i]>>8;
}
}
}
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_BRR)) { // BRR
int sampleCount=loop?loopEnd:samples;
if (!initInternal(DIV_SAMPLE_DEPTH_BRR,sampleCount)) return;
brrEncode(data16,dataBRR,sampleCount,loop?loopStart:-1,brrEmphasis,brrNoFilter);
}
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_VOX)) { // VOX
if (!initInternal(DIV_SAMPLE_DEPTH_VOX,samples)) return;
oki_encode(data16,dataVOX,samples);
}
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_MULAW)) { // µ-law
if (!initInternal(DIV_SAMPLE_DEPTH_MULAW,samples)) return;
for (unsigned int i=0; i<samples; i++) {
IntFloat s;
s.f=data16[i];
s.i&=0x7fffffff;
if (s.f>32639.0f) s.f=32639.0f;
s.f/=128.0f;
s.f+=1.0f;
s.i-=0x3f800000;
dataMuLaw[i]=(((data16[i]<0)?0x80:0)|(s.i&0x03f80000)>>19)^0xff;
}
}
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_C219)) { // C219
if (!initInternal(DIV_SAMPLE_DEPTH_C219,samples)) return;
for (unsigned int i=0; i<samples; i++) {
short s=data16[i];
unsigned char x=0;
bool negate=s&0x8000;
if (negate) {
s^=0xffff;
}
if (s==0) {
x=0;
} else if (s>17152) { // 100+
x=((s-17152)>>9)+100;
} else {
int b=bsr(s)-1;
x=((s-(c219Table[c219HighBitPos[b]]))>>c219ShiftToVal[b])+c219HighBitPos[b];
}
if (x>127) x=127;
dataC219[i]=x|(negate?0x80:0);
}
}
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_IMA_ADPCM)) { // IMA ADPCM
if (!initInternal(DIV_SAMPLE_DEPTH_IMA_ADPCM,samples)) return;
int delta[2];
delta[0]=0;
delta[1]=0;
void* codec=adpcm_create_context(1,1,NOISE_SHAPING_OFF,delta);
if (codec==NULL) {
logE("oh no IMA encoder could not be created!");
} else {
size_t whyPointer=0;
adpcm_encode_block(codec,dataIMA,&whyPointer,data16,samples);
if (whyPointer!=lengthIMA) logW("IMA length mismatch! %d -> %d!=%d",(int)samples,(int)whyPointer,(int)lengthIMA);
adpcm_free_context(codec);
}
}
}
void* DivSample::getCurBuf() {
switch (depth) {
case DIV_SAMPLE_DEPTH_1BIT:
return data1;
case DIV_SAMPLE_DEPTH_1BIT_DPCM:
return dataDPCM;
case DIV_SAMPLE_DEPTH_YMZ_ADPCM:
return dataZ;
case DIV_SAMPLE_DEPTH_QSOUND_ADPCM:
return dataQSoundA;
case DIV_SAMPLE_DEPTH_ADPCM_A:
return dataA;
case DIV_SAMPLE_DEPTH_ADPCM_B:
return dataB;
case DIV_SAMPLE_DEPTH_ADPCM_K:
return dataK;
case DIV_SAMPLE_DEPTH_8BIT:
return data8;
case DIV_SAMPLE_DEPTH_BRR:
return dataBRR;
case DIV_SAMPLE_DEPTH_VOX:
return dataVOX;
case DIV_SAMPLE_DEPTH_MULAW:
return dataMuLaw;
case DIV_SAMPLE_DEPTH_C219:
return dataC219;
case DIV_SAMPLE_DEPTH_IMA_ADPCM:
return dataIMA;
case DIV_SAMPLE_DEPTH_16BIT:
return data16;
default:
return NULL;
}
return NULL;
}
unsigned int DivSample::getCurBufLen() {
switch (depth) {
case DIV_SAMPLE_DEPTH_1BIT:
return length1;
case DIV_SAMPLE_DEPTH_1BIT_DPCM:
return lengthDPCM;
case DIV_SAMPLE_DEPTH_YMZ_ADPCM:
return lengthZ;
case DIV_SAMPLE_DEPTH_QSOUND_ADPCM:
return lengthQSoundA;
case DIV_SAMPLE_DEPTH_ADPCM_A:
return lengthA;
case DIV_SAMPLE_DEPTH_ADPCM_B:
return lengthB;
case DIV_SAMPLE_DEPTH_ADPCM_K:
return lengthK;
case DIV_SAMPLE_DEPTH_8BIT:
return length8;
case DIV_SAMPLE_DEPTH_BRR:
return lengthBRR;
case DIV_SAMPLE_DEPTH_VOX:
return lengthVOX;
case DIV_SAMPLE_DEPTH_MULAW:
return lengthMuLaw;
case DIV_SAMPLE_DEPTH_C219:
return lengthC219;
case DIV_SAMPLE_DEPTH_IMA_ADPCM:
return lengthIMA;
case DIV_SAMPLE_DEPTH_16BIT:
return length16;
default:
return 0;
}
return 0;
}
DivSampleHistory* DivSample::prepareUndo(bool data, bool doNotPush) {
DivSampleHistory* h;
if (data) {
unsigned char* duplicate;
if (getCurBuf()==NULL) {
duplicate=NULL;
} else {
duplicate=new unsigned char[getCurBufLen()];
memcpy(duplicate,getCurBuf(),getCurBufLen());
}
h=new DivSampleHistory(duplicate,getCurBufLen(),samples,depth,rate,centerRate,loopStart,loopEnd,loop,brrEmphasis,brrNoFilter,dither,loopMode);
} else {
h=new DivSampleHistory(depth,rate,centerRate,loopStart,loopEnd,loop,brrEmphasis,brrNoFilter,dither,loopMode);
}
if (!doNotPush) {
while (!redoHist.empty()) {
DivSampleHistory* h=redoHist.back();
delete h;
redoHist.pop_back();
}
if (undoHist.size()>100) undoHist.pop_front();
undoHist.push_back(h);
}
return h;
}
#define applyHistory \
depth=h->depth; \
if (h->hasSample) { \
initInternal(h->depth,h->samples); \
samples=h->samples; \
\
if (h->length!=getCurBufLen()) logW("undo buffer length not equal to current buffer length! %d != %d",h->length,getCurBufLen()); \
\
void* buf=getCurBuf(); \
\
if (buf!=NULL && h->data!=NULL) { \
memcpy(buf,h->data,h->length); \
} \
} \
rate=h->rate; \
centerRate=h->centerRate; \
loopStart=h->loopStart; \
loopEnd=h->loopEnd; \
loop=h->loop; \
brrEmphasis=h->brrEmphasis; \
brrNoFilter=h->brrNoFilter; \
dither=h->dither; \
loopMode=h->loopMode;
int DivSample::undo() {
if (undoHist.empty()) return 0;
DivSampleHistory* h=undoHist.back();
DivSampleHistory* redo=prepareUndo(h->hasSample,true);
int ret=h->hasSample?2:1;
applyHistory;
redoHist.push_back(redo);
delete h;
undoHist.pop_back();
return ret;
}
int DivSample::redo() {
if (redoHist.empty()) return 0;
DivSampleHistory* h=redoHist.back();
DivSampleHistory* undo=prepareUndo(h->hasSample,true);
int ret=h->hasSample?2:1;
applyHistory;
undoHist.push_back(undo);
delete h;
redoHist.pop_back();
return ret;
}
DivSample::~DivSample() {
while (!undoHist.empty()) {
DivSampleHistory* h=undoHist.back();
delete h;
undoHist.pop_back();
}
while (!redoHist.empty()) {
DivSampleHistory* h=redoHist.back();
delete h;
redoHist.pop_back();
}
if (data8) delete[] data8;
if (data16) delete[] data16;
if (data1) delete[] data1;
if (dataDPCM) delete[] dataDPCM;
if (dataZ) delete[] dataZ;
if (dataQSoundA) delete[] dataQSoundA;
if (dataA) delete[] dataA;
if (dataB) delete[] dataB;
if (dataK) delete[] dataK;
if (dataBRR) delete[] dataBRR;
if (dataVOX) delete[] dataVOX;
if (dataMuLaw) delete[] dataMuLaw;
if (dataC219) delete[] dataC219;
if (dataIMA) delete[] dataIMA;
}
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