mirror of
https://github.com/tildearrow/furnace.git
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920 lines
23 KiB
C++
920 lines
23 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2022 tildearrow and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "sample.h"
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#include "../ta-log.h"
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#include <math.h>
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#include <string.h>
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#ifdef HAVE_SNDFILE
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#include "sfWrapper.h"
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#endif
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#include "filter.h"
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extern "C" {
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#include "../../extern/adpcm/bs_codec.h"
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#include "../../extern/adpcm/oki_codec.h"
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#include "../../extern/adpcm/yma_codec.h"
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#include "../../extern/adpcm/ymb_codec.h"
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#include "../../extern/adpcm/ymz_codec.h"
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}
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DivSampleHistory::~DivSampleHistory() {
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if (data!=NULL) delete[] data;
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}
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bool DivSample::save(const char* path) {
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#ifndef HAVE_SNDFILE
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logE("Furnace was not compiled with libsndfile!");
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return false;
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#else
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SNDFILE* f;
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SF_INFO si;
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SFWrapper sfWrap;
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memset(&si,0,sizeof(SF_INFO));
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if (length16<1) return false;
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si.channels=1;
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si.samplerate=rate;
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switch (depth) {
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case 8: // 8-bit
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si.format=SF_FORMAT_PCM_U8|SF_FORMAT_WAV;
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break;
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default: // 16-bit
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si.format=SF_FORMAT_PCM_16|SF_FORMAT_WAV;
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break;
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}
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f=sfWrap.doOpen(path,SFM_WRITE,&si);
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if (f==NULL) {
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logE("could not open wave file for saving! %s",sf_error_number(sf_error(f)));
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return false;
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}
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SF_INSTRUMENT inst;
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memset(&inst, 0, sizeof(inst));
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inst.gain = 1;
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short pitch = (0x3c * 100) + 50 - (log2((double)centerRate/rate) * 12.0 * 100.0);
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inst.basenote = pitch / 100;
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inst.detune = 50 - (pitch % 100);
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inst.velocity_hi = 0x7f;
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inst.key_hi = 0x7f;
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if(loopStart != -1)
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{
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inst.loop_count = 1;
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inst.loops[0].mode = SF_LOOP_FORWARD;
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inst.loops[0].start = loopStart;
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inst.loops[0].end = samples;
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}
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sf_command(f, SFC_SET_INSTRUMENT, &inst, sizeof(inst));
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switch (depth) {
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case 8: {
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// convert from signed to unsigned
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unsigned char* buf=new unsigned char[length8];
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for (size_t i=0; i<length8; i++) {
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buf[i]=data8[i]^0x80;
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}
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sf_write_raw(f,buf,length8);
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delete[] buf;
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break;
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}
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default:
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sf_write_raw(f,data16,length16);
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break;
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}
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sfWrap.doClose();
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return true;
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#endif
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}
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// 16-bit memory is padded to 512, to make things easier for ADPCM-A/B.
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bool DivSample::initInternal(unsigned char d, int count) {
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switch (d) {
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case 0: // 1-bit
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if (data1!=NULL) delete[] data1;
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length1=(count+7)/8;
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data1=new unsigned char[length1];
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memset(data1,0,length1);
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break;
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case 1: // DPCM
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if (dataDPCM!=NULL) delete[] dataDPCM;
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lengthDPCM=(count+7)/8;
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dataDPCM=new unsigned char[lengthDPCM];
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memset(dataDPCM,0,lengthDPCM);
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break;
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case 3: // YMZ ADPCM
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if (dataZ!=NULL) delete[] dataZ;
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lengthZ=(count+1)/2;
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// for padding AICA sample
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dataZ=new unsigned char[(lengthZ+3)&(~0x03)];
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memset(dataZ,0,(lengthZ+3)&(~0x03));
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break;
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case 4: // QSound ADPCM
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if (dataQSoundA!=NULL) delete[] dataQSoundA;
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lengthQSoundA=(count+1)/2;
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dataQSoundA=new unsigned char[lengthQSoundA];
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memset(dataQSoundA,0,lengthQSoundA);
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break;
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case 5: // ADPCM-A
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if (dataA!=NULL) delete[] dataA;
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lengthA=(count+1)/2;
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dataA=new unsigned char[(lengthA+255)&(~0xff)];
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memset(dataA,0,(lengthA+255)&(~0xff));
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break;
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case 6: // ADPCM-B
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if (dataB!=NULL) delete[] dataB;
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lengthB=(count+1)/2;
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dataB=new unsigned char[(lengthB+255)&(~0xff)];
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memset(dataB,0,(lengthB+255)&(~0xff));
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break;
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case 8: // 8-bit
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if (data8!=NULL) delete[] data8;
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length8=count;
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// for padding X1-010 sample
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data8=new signed char[(count+4095)&(~0xfff)];
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memset(data8,0,(count+4095)&(~0xfff));
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break;
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case 9: // BRR
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if (dataBRR!=NULL) delete[] dataBRR;
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lengthBRR=9*((count+15)/16);
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dataBRR=new unsigned char[lengthBRR];
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memset(dataBRR,0,lengthBRR);
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break;
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case 10: // VOX
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if (dataVOX!=NULL) delete[] dataVOX;
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lengthVOX=(count+1)/2;
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dataVOX=new unsigned char[lengthVOX];
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memset(dataVOX,0,lengthVOX);
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break;
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case 16: // 16-bit
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if (data16!=NULL) delete[] data16;
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length16=count*2;
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data16=new short[(count+511)&(~0x1ff)];
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memset(data16,0,((count+511)&(~0x1ff))*sizeof(short));
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break;
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default:
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return false;
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}
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return true;
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}
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bool DivSample::init(unsigned int count) {
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if (!initInternal(depth,count)) return false;
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samples=count;
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return true;
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}
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bool DivSample::resize(unsigned int count) {
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if (depth==8) {
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if (data8!=NULL) {
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signed char* oldData8=data8;
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data8=NULL;
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initInternal(8,count);
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memcpy(data8,oldData8,MIN(count,samples));
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delete[] oldData8;
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} else {
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initInternal(8,count);
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}
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samples=count;
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return true;
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} else if (depth==16) {
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if (data16!=NULL) {
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short* oldData16=data16;
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data16=NULL;
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initInternal(16,count);
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memcpy(data16,oldData16,sizeof(short)*MIN(count,samples));
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delete[] oldData16;
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} else {
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initInternal(16,count);
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}
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samples=count;
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return true;
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}
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return false;
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}
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bool DivSample::strip(unsigned int begin, unsigned int end) {
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if (begin>samples) begin=samples;
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if (end>samples) end=samples;
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int count=samples-(end-begin);
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if (count<=0) return resize(0);
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if (depth==8) {
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if (data8!=NULL) {
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signed char* oldData8=data8;
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data8=NULL;
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initInternal(8,count);
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if (begin>0) {
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memcpy(data8,oldData8,begin);
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}
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if (samples-end>0) {
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memcpy(data8+begin,oldData8+end,samples-end);
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}
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delete[] oldData8;
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} else {
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// do nothing
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return true;
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}
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samples=count;
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return true;
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} else if (depth==16) {
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if (data16!=NULL) {
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short* oldData16=data16;
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data16=NULL;
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initInternal(16,count);
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if (begin>0) {
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memcpy(data16,oldData16,sizeof(short)*begin);
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}
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if (samples-end>0) {
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memcpy(&(data16[begin]),&(oldData16[end]),sizeof(short)*(samples-end));
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}
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delete[] oldData16;
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} else {
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// do nothing
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return true;
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}
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samples=count;
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return true;
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}
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return false;
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}
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bool DivSample::trim(unsigned int begin, unsigned int end) {
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int count=end-begin;
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if (count==0) return true;
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if (begin==0 && end==samples) return true;
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if (depth==8) {
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if (data8!=NULL) {
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signed char* oldData8=data8;
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data8=NULL;
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initInternal(8,count);
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memcpy(data8,oldData8+begin,count);
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delete[] oldData8;
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} else {
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// do nothing
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return true;
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}
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samples=count;
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return true;
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} else if (depth==16) {
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if (data16!=NULL) {
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short* oldData16=data16;
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data16=NULL;
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initInternal(16,count);
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memcpy(data16,&(oldData16[begin]),sizeof(short)*count);
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delete[] oldData16;
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} else {
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// do nothing
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return true;
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}
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samples=count;
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return true;
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}
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return false;
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}
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bool DivSample::insert(unsigned int pos, unsigned int length) {
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unsigned int count=samples+length;
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if (depth==8) {
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if (data8!=NULL) {
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signed char* oldData8=data8;
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data8=NULL;
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initInternal(8,count);
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if (pos>0) {
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memcpy(data8,oldData8,pos);
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}
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if (count-pos-length>0) {
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memcpy(data8+pos+length,oldData8+pos,count-pos-length);
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}
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delete[] oldData8;
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} else {
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initInternal(8,count);
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}
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samples=count;
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return true;
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} else if (depth==16) {
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if (data16!=NULL) {
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short* oldData16=data16;
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data16=NULL;
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initInternal(16,count);
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if (pos>0) {
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memcpy(data16,oldData16,sizeof(short)*pos);
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}
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if (count-pos-length>0) {
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memcpy(&(data16[pos+length]),&(oldData16[pos]),sizeof(short)*(count-pos-length));
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}
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delete[] oldData16;
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} else {
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initInternal(16,count);
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}
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samples=count;
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return true;
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}
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return false;
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}
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#define RESAMPLE_BEGIN \
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if (samples<1) return true; \
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int finalCount=(double)samples*(r/(double)rate); \
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signed char* oldData8=data8; \
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short* oldData16=data16; \
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if (depth==16) { \
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if (data16!=NULL) { \
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data16=NULL; \
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initInternal(16,finalCount); \
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} \
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} else if (depth==8) { \
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if (data8!=NULL) { \
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data8=NULL; \
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initInternal(8,finalCount); \
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} \
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} else { \
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return false; \
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}
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#define RESAMPLE_END \
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if (loopStart>=0) loopStart=(double)loopStart*(r/(double)rate); \
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centerRate=(int)((double)centerRate*(r/(double)rate)); \
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rate=r; \
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samples=finalCount; \
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if (depth==16) { \
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delete[] oldData16; \
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} else if (depth==8) { \
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delete[] oldData8; \
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}
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bool DivSample::resampleNone(double r) {
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RESAMPLE_BEGIN;
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if (depth==16) {
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for (int i=0; i<finalCount; i++) {
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unsigned int pos=(unsigned int)((double)i*((double)rate/r));
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if (pos>=samples) {
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data16[i]=0;
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} else {
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data16[i]=oldData16[pos];
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}
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}
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} else if (depth==8) {
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for (int i=0; i<finalCount; i++) {
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unsigned int pos=(unsigned int)((double)i*((double)rate/r));
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if (pos>=samples) {
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data8[i]=0;
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} else {
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data8[i]=oldData8[pos];
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}
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}
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}
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RESAMPLE_END;
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return true;
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}
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bool DivSample::resampleLinear(double r) {
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RESAMPLE_BEGIN;
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double posFrac=0;
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unsigned int posInt=0;
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double factor=(double)rate/r;
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if (depth==16) {
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for (int i=0; i<finalCount; i++) {
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short s1=(posInt>=samples)?0:oldData16[posInt];
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short s2=(posInt+1>=samples)?((loopStart>=0 && loopStart<(int)samples)?oldData16[loopStart]:0):oldData16[posInt+1];
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data16[i]=s1+(float)(s2-s1)*posFrac;
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posFrac+=factor;
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while (posFrac>=1.0) {
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posFrac-=1.0;
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posInt++;
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}
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}
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} else if (depth==8) {
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for (int i=0; i<finalCount; i++) {
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short s1=(posInt>=samples)?0:oldData8[posInt];
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short s2=(posInt+1>=samples)?((loopStart>=0 && loopStart<(int)samples)?oldData8[loopStart]:0):oldData8[posInt+1];
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data8[i]=s1+(float)(s2-s1)*posFrac;
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posFrac+=factor;
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while (posFrac>=1.0) {
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posFrac-=1.0;
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posInt++;
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}
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}
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}
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RESAMPLE_END;
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return true;
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}
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bool DivSample::resampleCubic(double r) {
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RESAMPLE_BEGIN;
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double posFrac=0;
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unsigned int posInt=0;
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double factor=(double)rate/r;
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float* cubicTable=DivFilterTables::getCubicTable();
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if (depth==16) {
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for (int i=0; i<finalCount; i++) {
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unsigned int n=((unsigned int)(posFrac*1024.0))&1023;
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float* t=&cubicTable[n<<2];
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float s0=(posInt<1)?0:oldData16[posInt-1];
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float s1=(posInt>=samples)?0:oldData16[posInt];
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float s2=(posInt+1>=samples)?((loopStart>=0 && loopStart<(int)samples)?oldData16[loopStart]:0):oldData16[posInt+1];
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float s3=(posInt+2>=samples)?((loopStart>=0 && loopStart<(int)samples)?oldData16[loopStart]:0):oldData16[posInt+2];
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float result=s0*t[0]+s1*t[1]+s2*t[2]+s3*t[3];
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if (result<-32768) result=-32768;
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if (result>32767) result=32767;
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data16[i]=result;
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posFrac+=factor;
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while (posFrac>=1.0) {
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posFrac-=1.0;
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posInt++;
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}
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}
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} else if (depth==8) {
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for (int i=0; i<finalCount; i++) {
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unsigned int n=((unsigned int)(posFrac*1024.0))&1023;
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float* t=&cubicTable[n<<2];
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float s0=(posInt<1)?0:oldData8[posInt-1];
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float s1=(posInt>=samples)?0:oldData8[posInt];
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float s2=(posInt+1>=samples)?((loopStart>=0 && loopStart<(int)samples)?oldData8[loopStart]:0):oldData8[posInt+1];
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float s3=(posInt+2>=samples)?((loopStart>=0 && loopStart<(int)samples)?oldData8[loopStart]:0):oldData8[posInt+2];
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float result=s0*t[0]+s1*t[1]+s2*t[2]+s3*t[3];
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if (result<-128) result=-128;
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if (result>127) result=127;
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data8[i]=result;
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posFrac+=factor;
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while (posFrac>=1.0) {
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posFrac-=1.0;
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posInt++;
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}
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}
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}
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RESAMPLE_END;
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return true;
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}
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bool DivSample::resampleBlep(double r) {
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RESAMPLE_BEGIN;
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double posFrac=0;
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unsigned int posInt=0;
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double factor=r/(double)rate;
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float* sincITable=DivFilterTables::getSincIntegralTable();
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float s[16];
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memset(s,0,16*sizeof(float));
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if (depth==16) {
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memset(data16,0,finalCount*sizeof(short));
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for (int i=0; i<finalCount; i++) {
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if (posInt<samples) {
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int result=data16[i]+oldData16[posInt];
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if (result<-32768) result=-32768;
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if (result>32767) result=32767;
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data16[i]=result;
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}
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posFrac+=1.0;
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while (posFrac>=1.0) {
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unsigned int n=((unsigned int)(posFrac*8192.0))&8191;
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posFrac-=factor;
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posInt++;
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float* t1=&sincITable[(8191-n)<<3];
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float* t2=&sincITable[n<<3];
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float delta=oldData16[posInt]-oldData16[posInt-1];
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for (int j=0; j<8; j++) {
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if (i-j>0) {
|
|
float result=data16[i-j]+t1[j]*-delta;
|
|
if (result<-32768) result=-32768;
|
|
if (result>32767) result=32767;
|
|
data16[i-j]=result;
|
|
}
|
|
if (i+j+1<finalCount) {
|
|
float result=data16[i+j+1]+t2[j]*delta;
|
|
if (result<-32768) result=-32768;
|
|
if (result>32767) result=32767;
|
|
data16[i+j+1]=result;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if (depth==8) {
|
|
memset(data8,0,finalCount);
|
|
for (int i=0; i<finalCount; i++) {
|
|
if (posInt<samples) {
|
|
int result=data8[i]+oldData8[posInt];
|
|
if (result<-128) result=-128;
|
|
if (result>127) result=127;
|
|
data8[i]=result;
|
|
}
|
|
|
|
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) {
|
|
float result=data8[i-j]+t1[j]*-delta;
|
|
if (result<-128) result=-128;
|
|
if (result>127) result=127;
|
|
data8[i-j]=result;
|
|
}
|
|
if (i+j+1<finalCount) {
|
|
float result=data8[i+j+1]+t2[j]*delta;
|
|
if (result<-128) result=-128;
|
|
if (result>127) result=127;
|
|
data8[i+j+1]=result;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
RESAMPLE_END;
|
|
return true;
|
|
}
|
|
|
|
bool DivSample::resampleSinc(double r) {
|
|
RESAMPLE_BEGIN;
|
|
|
|
double posFrac=0;
|
|
unsigned int posInt=0;
|
|
double factor=(double)rate/r;
|
|
float* sincTable=DivFilterTables::getSincTable();
|
|
float s[16];
|
|
|
|
memset(s,0,16*sizeof(float));
|
|
|
|
if (depth==16) {
|
|
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==8) {
|
|
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 r, int filter) {
|
|
if (depth!=8 && depth!=16) return false;
|
|
switch (filter) {
|
|
case DIV_RESAMPLE_NONE:
|
|
return resampleNone(r);
|
|
break;
|
|
case DIV_RESAMPLE_LINEAR:
|
|
return resampleLinear(r);
|
|
break;
|
|
case DIV_RESAMPLE_CUBIC:
|
|
return resampleCubic(r);
|
|
break;
|
|
case DIV_RESAMPLE_BLEP:
|
|
return resampleBlep(r);
|
|
break;
|
|
case DIV_RESAMPLE_SINC:
|
|
return resampleSinc(r);
|
|
break;
|
|
case DIV_RESAMPLE_BEST:
|
|
if (r>rate) {
|
|
return resampleSinc(r);
|
|
} else {
|
|
return resampleBlep(r);
|
|
}
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void DivSample::render() {
|
|
// step 1: convert to 16-bit if needed
|
|
if (depth!=16) {
|
|
if (!initInternal(16,samples)) return;
|
|
switch (depth) {
|
|
case 0: // 1-bit
|
|
for (unsigned int i=0; i<samples; i++) {
|
|
data16[i]=((data1[i>>3]>>(i&7))&1)?0x7fff:-0x7fff;
|
|
}
|
|
break;
|
|
case 1: { // 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 3: // YMZ ADPCM
|
|
ymz_decode(dataZ,data16,samples);
|
|
break;
|
|
case 4: // QSound ADPCM
|
|
bs_decode(dataQSoundA,data16,samples);
|
|
break;
|
|
case 5: // ADPCM-A
|
|
yma_decode(dataA,data16,samples);
|
|
break;
|
|
case 6: // ADPCM-B
|
|
ymb_decode(dataB,data16,samples);
|
|
break;
|
|
case 8: // 8-bit PCM
|
|
for (unsigned int i=0; i<samples; i++) {
|
|
data16[i]=data8[i]<<8;
|
|
}
|
|
break;
|
|
case 9: // BRR
|
|
// TODO!
|
|
break;
|
|
case 10: // VOX
|
|
oki_decode(dataVOX,data16,samples);
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
|
|
// step 2: render to other formats
|
|
if (depth!=0) { // 1-bit
|
|
if (!initInternal(0,samples)) return;
|
|
for (unsigned int i=0; i<samples; i++) {
|
|
if (data16[i]>0) {
|
|
data1[i>>3]|=1<<(i&7);
|
|
}
|
|
}
|
|
}
|
|
if (depth!=1) { // DPCM
|
|
if (!initInternal(1,samples)) return;
|
|
int accum=63;
|
|
for (unsigned int i=0; i<samples; i++) {
|
|
int next=((unsigned short)(data16[i]^0x8000))>>9;
|
|
if (next>accum) {
|
|
dataDPCM[i>>3]|=1<<(i&7);
|
|
accum++;
|
|
} else {
|
|
accum--;
|
|
}
|
|
if (accum<0) accum=0;
|
|
if (accum>127) accum=127;
|
|
}
|
|
}
|
|
if (depth!=3) { // YMZ ADPCM
|
|
if (!initInternal(3,samples)) return;
|
|
ymz_encode(data16,dataZ,(samples+7)&(~0x7));
|
|
}
|
|
if (depth!=4) { // QSound ADPCM
|
|
if (!initInternal(4,samples)) return;
|
|
bs_encode(data16,dataQSoundA,samples);
|
|
}
|
|
// TODO: pad to 256.
|
|
if (depth!=5) { // ADPCM-A
|
|
if (!initInternal(5,samples)) return;
|
|
yma_encode(data16,dataA,(samples+511)&(~0x1ff));
|
|
}
|
|
if (depth!=6) { // ADPCM-B
|
|
if (!initInternal(6,samples)) return;
|
|
ymb_encode(data16,dataB,(samples+511)&(~0x1ff));
|
|
}
|
|
if (depth!=8) { // 8-bit PCM
|
|
if (!initInternal(8,samples)) return;
|
|
for (unsigned int i=0; i<samples; i++) {
|
|
data8[i]=data16[i]>>8;
|
|
}
|
|
}
|
|
// TODO: BRR!
|
|
if (depth!=10) { // VOX
|
|
if (!initInternal(10,samples)) return;
|
|
oki_encode(data16,dataVOX,samples);
|
|
}
|
|
}
|
|
|
|
void* DivSample::getCurBuf() {
|
|
switch (depth) {
|
|
case 0:
|
|
return data1;
|
|
case 1:
|
|
return dataDPCM;
|
|
case 3:
|
|
return dataZ;
|
|
case 4:
|
|
return dataQSoundA;
|
|
case 5:
|
|
return dataA;
|
|
case 6:
|
|
return dataB;
|
|
case 8:
|
|
return data8;
|
|
case 9:
|
|
return dataBRR;
|
|
case 10:
|
|
return dataVOX;
|
|
case 16:
|
|
return data16;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
unsigned int DivSample::getCurBufLen() {
|
|
switch (depth) {
|
|
case 0:
|
|
return length1;
|
|
case 1:
|
|
return lengthDPCM;
|
|
case 3:
|
|
return lengthZ;
|
|
case 4:
|
|
return lengthQSoundA;
|
|
case 5:
|
|
return lengthA;
|
|
case 6:
|
|
return lengthB;
|
|
case 8:
|
|
return length8;
|
|
case 9:
|
|
return lengthBRR;
|
|
case 10:
|
|
return lengthVOX;
|
|
case 16:
|
|
return length16;
|
|
}
|
|
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);
|
|
} else {
|
|
h=new DivSampleHistory(depth,rate,centerRate,loopStart);
|
|
}
|
|
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;
|
|
|
|
|
|
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 (dataBRR) delete[] dataBRR;
|
|
if (dataVOX) delete[] dataVOX;
|
|
}
|