mirror of
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XM import: more work more work
This commit is contained in:
tildearrow
parent
36e6899eff
commit
2d33c004af
1 changed files with 312 additions and 188 deletions
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@ -19,11 +19,115 @@
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#include "fileOpsCommon.h"
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void readEnvelope(DivInstrument* ins, int env, unsigned char flags, unsigned char numPoints, unsigned char loopStart, unsigned char loopEnd, unsigned char susPoint, short* points) {
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if (numPoints>24) numPoints=24;
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if (loopStart>=numPoints) loopStart=numPoints-1;
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if (loopEnd>=numPoints) loopEnd=numPoints-1;
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if (susPoint>=numPoints) susPoint=numPoints-1;
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unsigned short pointTime[12];
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short pointVal[12];
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for (int i=0; i<12; i++) {
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pointTime[i]=points[i<<1];
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pointVal[i]=points[1|(i<<1)];
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}
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// don't process if there aren't any points or if the envelope is disabled
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if (numPoints<1) return;
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if (!(flags&1)) return;
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// convert into macro, or try to
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DivInstrumentMacro* target=NULL;
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switch (env) {
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case 0: // volume
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target=&ins->std.volMacro;
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break;
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case 1: // panning (split later)
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target=&ins->std.panLMacro;
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break;
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}
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target->len=0;
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int point=0;
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bool pointJustBegan=true;
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// mark loop end as end of envelope
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if (flags&4) {
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if (loopEnd<numPoints) numPoints=loopEnd+1;
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}
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for (int i=0; i<255; i++) {
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int curPoint=MIN(point,numPoints-1);
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int nextPoint=MIN(point+1,numPoints-1);
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int p0=pointVal[curPoint];
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int p1=pointVal[nextPoint];
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while (i>pointTime[nextPoint]) {
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point++;
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pointJustBegan=true;
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curPoint=MIN(point,numPoints-1);
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nextPoint=MIN(point+1,numPoints-1);
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p0=pointVal[curPoint];
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p1=pointVal[nextPoint];
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if ((point+1)>=numPoints) {
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break;
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}
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}
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if (pointJustBegan) {
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pointJustBegan=false;
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if (flags&4) { // loop
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if (point==loopStart) {
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if (loopStart!=loopEnd) {
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target->loop=i;
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}
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}
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}
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if (flags&2) { // sustain
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if (point==susPoint) {
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target->rel=MAX(i-1,0);
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}
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}
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}
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if ((point+1)>=numPoints) {
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target->len=i;
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//target->val[i]=p0;
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break;
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}
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int timeDiff=pointTime[nextPoint]-pointTime[curPoint];
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int curTime=i-pointTime[curPoint];
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if (timeDiff<1) timeDiff=1;
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if (curTime<0) curTime=0;
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target->len=i+1;
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target->val[i]=p0+(((p1-p0)*curTime)/timeDiff);
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}
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// split L/R
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if (env==1) {
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for (int i=0; i<ins->std.panLMacro.len; i++) {
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int val=ins->std.panLMacro.val[i];
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if (val==0) {
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ins->std.panLMacro.val[i]=4095;
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ins->std.panRMacro.val[i]=4095;
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} else if (val>0) { // pan right
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ins->std.panLMacro.val[i]=4095*pow(1.0-((double)val/64.0),0.25);
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ins->std.panRMacro.val[i]=4095;
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} else { // pan left
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ins->std.panLMacro.val[i]=4095;
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ins->std.panRMacro.val[i]=4095*pow(1.0+((double)val/64.0),0.25);
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}
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}
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ins->std.panRMacro.len=ins->std.panLMacro.len;
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ins->std.panRMacro.loop=ins->std.panLMacro.loop;
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ins->std.panRMacro.rel=ins->std.panLMacro.rel;
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}
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}
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bool DivEngine::loadXM(unsigned char* file, size_t len) {
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struct InvalidHeaderException {};
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bool success=false;
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char magic[32];
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unsigned char sampleVol[256][256];
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unsigned char samplePan[256][256];
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unsigned char noteMap[256][128];
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unsigned short patLen[256];
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@ -37,6 +141,8 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
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warnings="";
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memset(sampleVol,0,256*256);
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memset(samplePan,0,256*256);
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memset(noteMap,0,256*128);
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memset(patLen,0,256*sizeof(unsigned short));
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@ -318,6 +424,197 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
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}
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}
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// read instruments
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for (int i=0; i<ds.insLen; i++) {
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short volEnv[24];
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short panEnv[48];
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DivInstrument* ins=new DivInstrument;
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logD("instrument %d",i);
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headerSeek=reader.tell();
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headerSeek+=reader.readI();
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logV("the freaking thing ends at %x",headerSeek);
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ins->name=reader.readStringLatin1(22);
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ins->type=DIV_INS_ES5506;
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ins->amiga.useNoteMap=true;
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unsigned char insType=reader.readC();
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/*
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if (insType!=0) {
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logE("unknown instrument type!");
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lastError="unknown instrument type";
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delete ins;
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song.unload();
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delete[] file;
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return false;
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}*/
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logV("type: %d",insType);
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unsigned short sampleCount=reader.readS();
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logV("%d samples",sampleCount);
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if (sampleCount>0) {
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unsigned int sampleHeaderSize=reader.readI();
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logV("sample header size: %d",sampleHeaderSize);
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for (int j=0; j<96; j++) {
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unsigned char nextMap=reader.readC();
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ins->amiga.noteMap[j].map=ds.sample.size()+nextMap;
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noteMap[i][j]=nextMap;
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}
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for (int j=0; j<24; j++) {
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volEnv[j]=reader.readS();
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}
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for (int j=0; j<24; j++) {
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panEnv[j]=reader.readS();
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}
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unsigned char volEnvLen=reader.readC();
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unsigned char panEnvLen=reader.readC();
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unsigned char volSusPoint=reader.readC();
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unsigned char volLoopStart=reader.readC();
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unsigned char volLoopEnd=reader.readC();
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unsigned char panSusPoint=reader.readC();
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unsigned char panLoopStart=reader.readC();
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unsigned char panLoopEnd=reader.readC();
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unsigned char volType=reader.readC();
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unsigned char panType=reader.readC();
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unsigned char vibType=reader.readC();
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unsigned char vibSweep=reader.readC();
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unsigned char vibDepth=reader.readC();
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unsigned char vibRate=reader.readC();
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unsigned short volFade=reader.readS();
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reader.readS(); // reserved
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logV("%d",vibType);
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logV("%d",vibSweep);
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logV("%d",vibDepth);
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logV("%d",vibRate);
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logV("volFade: %d",volFade);
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// convert envelopes
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readEnvelope(ins,0,volType,volEnvLen,volLoopStart,volLoopEnd,volSusPoint,volEnv);
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readEnvelope(ins,1,panType,panEnvLen,panLoopStart,panLoopEnd,panSusPoint,panEnv);
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if (volType&1) {
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// add fade-out
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int cur=64;
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if (ins->std.volMacro.len>0) {
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cur=ins->std.volMacro.val[ins->std.volMacro.len-1];
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}
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for (int fadeOut=32767; fadeOut>0 && ins->std.volMacro.len<254; fadeOut-=volFade) {
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ins->std.volMacro.val[ins->std.volMacro.len++]=(cur*fadeOut)>>15;
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}
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ins->std.volMacro.val[ins->std.volMacro.len++]=0;
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} else {
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// add a one-tick macro to make note release happy
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ins->std.volMacro.val[0]=64;
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ins->std.volMacro.val[1]=0;
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ins->std.volMacro.rel=0;
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ins->std.volMacro.len=2;
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}
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if (!reader.seek(headerSeek,SEEK_SET)) {
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logE("premature end of file!");
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lastError="incomplete file";
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delete[] file;
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return false;
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}
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// read samples for this instrument
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std::vector<DivSample*> toAdd;
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for (int j=0; j<sampleCount; j++) {
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DivSample* s=new DivSample;
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unsigned int numSamples=reader.readI();
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if (numSamples>16777216) {
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logE("abnormal sample size! %x",reader.tell());
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lastError="bad sample size";
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delete s;
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delete[] file;
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return false;
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}
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s->loopStart=reader.readI();
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s->loopEnd=reader.readI()+s->loopStart;
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sampleVol[i][j]=reader.readC();
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signed char fine=reader.readC();
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unsigned char flags=reader.readC();
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samplePan[i][j]=reader.readC();
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signed char note=reader.readC();
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switch (flags&3) {
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case 0:
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s->loop=false;
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break;
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case 1:
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s->loop=true;
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s->loopMode=DIV_SAMPLE_LOOP_FORWARD;
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break;
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case 2:
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s->loop=true;
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s->loopMode=DIV_SAMPLE_LOOP_PINGPONG;
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break;
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}
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reader.readC(); // reserved
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s->centerRate=8363.0*pow(2.0,((double)note+((double)fine/128.0))/12.0);
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s->name=reader.readStringLatin1(22);
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s->depth=(flags&16)?DIV_SAMPLE_DEPTH_16BIT:DIV_SAMPLE_DEPTH_8BIT;
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if (flags&16) {
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numSamples>>=1;
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}
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s->init(numSamples);
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// seek here???
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toAdd.push_back(s);
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}
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for (int j=0; j<sampleCount; j++) {
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DivSample* s=toAdd[j];
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// load sample data
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if (s->depth==DIV_SAMPLE_DEPTH_16BIT) {
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short next=0;
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for (unsigned int i=0; i<s->samples; i++) {
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next+=reader.readS();
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s->data16[i]=next;
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}
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} else {
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signed char next=0;
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for (unsigned int i=0; i<s->samples; i++) {
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next+=reader.readC();
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s->data8[i]=next;
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}
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}
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}
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for (DivSample* i: toAdd) {
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ds.sample.push_back(i);
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}
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toAdd.clear();
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} else {
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if (!reader.seek(headerSeek,SEEK_SET)) {
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logE("premature end of file!");
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lastError="incomplete file";
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delete[] file;
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return false;
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}
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}
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ds.ins.push_back(ins);
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}
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if (!reader.seek(patBegin,SEEK_SET)) {
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logE("premature end of file!");
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lastError="incomplete file";
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@ -437,15 +734,18 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
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}
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if (hasNote) {
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if (note>=96) {
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p->data[j][0]=100;
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p->data[j][1]=0;
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} else {
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p->data[j][0]=note%12;
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p->data[j][1]=note/12;
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if (p->data[j][0]==0) {
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p->data[j][0]=12;
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p->data[j][1]=(unsigned char)(p->data[j][1]-1);
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if (note!=0) {
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if (note>96) {
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p->data[j][0]=101;
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p->data[j][1]=0;
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} else {
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note--;
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p->data[j][0]=note%12;
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p->data[j][1]=note/12;
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if (p->data[j][0]==0) {
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p->data[j][0]=12;
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p->data[j][1]=(unsigned char)(p->data[j][1]-1);
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}
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}
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}
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}
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@ -464,7 +764,7 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
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if (vol==0) {
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if (hasNote && hasIns && note<96 && ins>0) {
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// TODO: default volume
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p->data[j][3]=0x40;
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p->data[j][3]=sampleVol[(ins-1)&255][noteMap[(ins-1)&255][note&127]];
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}
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}
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if (hasEffect) {
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@ -474,11 +774,11 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
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effectVal=reader.readC();
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}
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if (hasEffect) {
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if (hasEffect || (hasEffectVal && effectVal!=0)) {
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switch (effect) {
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case 0: // arp
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if (effectVal!=0) {
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arpStatus[k]=effectVal;
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arpStatus[k]=(effectVal>>4)|(effectVal<<4);
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arpStatusChanged[k]=true;
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}
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arping[k]=true;
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@ -702,182 +1002,6 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
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}
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}
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// read instruments
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for (int i=0; i<ds.insLen; i++) {
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unsigned char volEnv[48];
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unsigned char panEnv[48];
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DivInstrument* ins=new DivInstrument;
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logD("instrument %d",i);
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headerSeek=reader.tell();
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headerSeek+=reader.readI();
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logV("the freaking thing ends at %x",headerSeek);
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ins->name=reader.readStringLatin1(22);
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ins->type=DIV_INS_ES5506;
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ins->amiga.useNoteMap=true;
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unsigned char insType=reader.readC();
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/*
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if (insType!=0) {
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logE("unknown instrument type!");
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lastError="unknown instrument type";
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delete ins;
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song.unload();
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delete[] file;
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return false;
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}*/
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logV("type: %d",insType);
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unsigned short sampleCount=reader.readS();
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logV("%d samples",sampleCount);
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if (sampleCount>0) {
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unsigned int sampleHeaderSize=reader.readI();
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logV("sample header size: %d",sampleHeaderSize);
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for (int j=0; j<96; j++) {
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unsigned char nextMap=reader.readC();
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if (nextMap==0) {
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ins->amiga.noteMap[j].map=-1;
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} else {
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ins->amiga.noteMap[j].map=ds.sample.size()+nextMap-1;
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}
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}
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reader.read(volEnv,48);
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reader.read(panEnv,48);
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unsigned char volEnvLen=reader.readC();
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unsigned char panEnvLen=reader.readC();
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unsigned char volSusPoint=reader.readC();
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unsigned char volLoopStart=reader.readC();
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unsigned char volLoopEnd=reader.readC();
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unsigned char panSusPoint=reader.readC();
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unsigned char panLoopStart=reader.readC();
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unsigned char panLoopEnd=reader.readC();
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unsigned char volType=reader.readC();
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unsigned char panType=reader.readC();
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unsigned char vibType=reader.readC();
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unsigned char vibSweep=reader.readC();
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unsigned char vibDepth=reader.readC();
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unsigned char vibRate=reader.readC();
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unsigned short volFade=reader.readS();
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reader.readS(); // reserved
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logV("%d",volEnvLen);
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logV("%d",panEnvLen);
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logV("%d",volSusPoint);
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logV("%d",volLoopStart);
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logV("%d",volLoopEnd);
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logV("%d",panSusPoint);
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logV("%d",panLoopStart);
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logV("%d",panLoopEnd);
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logV("%d",volType);
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logV("%d",panType);
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logV("%d",vibType);
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logV("%d",vibSweep);
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logV("%d",vibDepth);
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logV("%d",vibRate);
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logV("%d",volFade);
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if (!reader.seek(headerSeek,SEEK_SET)) {
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logE("premature end of file!");
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lastError="incomplete file";
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delete[] file;
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return false;
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}
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// read samples for this instrument
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std::vector<DivSample*> toAdd;
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for (int j=0; j<sampleCount; j++) {
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DivSample* s=new DivSample;
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unsigned int numSamples=reader.readI();
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if (numSamples>16777216) {
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logE("abnormal sample size! %x",reader.tell());
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lastError="bad sample size";
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delete s;
|
||||
delete[] file;
|
||||
return false;
|
||||
}
|
||||
|
||||
s->loopStart=reader.readI();
|
||||
s->loopEnd=reader.readI()+s->loopStart;
|
||||
|
||||
sampleVol[i][j]=reader.readC();
|
||||
|
||||
signed char fine=reader.readC();
|
||||
unsigned char flags=reader.readC();
|
||||
unsigned char pan=reader.readC();
|
||||
unsigned char note=reader.readC();
|
||||
|
||||
logV("%d %d %d",fine,pan,note);
|
||||
|
||||
switch (flags&3) {
|
||||
case 0:
|
||||
s->loop=false;
|
||||
break;
|
||||
case 1:
|
||||
s->loop=true;
|
||||
s->loopMode=DIV_SAMPLE_LOOP_FORWARD;
|
||||
break;
|
||||
case 2:
|
||||
s->loop=true;
|
||||
s->loopMode=DIV_SAMPLE_LOOP_PINGPONG;
|
||||
break;
|
||||
}
|
||||
|
||||
reader.readC(); // reserved
|
||||
|
||||
s->name=reader.readStringLatin1(22);
|
||||
s->depth=(flags&4)?DIV_SAMPLE_DEPTH_16BIT:DIV_SAMPLE_DEPTH_8BIT;
|
||||
s->init(numSamples);
|
||||
|
||||
|
||||
// seek here???
|
||||
toAdd.push_back(s);
|
||||
}
|
||||
|
||||
for (int j=0; j<sampleCount; j++) {
|
||||
DivSample* s=toAdd[j];
|
||||
|
||||
// load sample data
|
||||
if (s->depth==DIV_SAMPLE_DEPTH_16BIT) {
|
||||
short next=0;
|
||||
for (unsigned int i=0; i<s->samples; i++) {
|
||||
next+=reader.readS();
|
||||
s->data16[i]=next;
|
||||
}
|
||||
} else {
|
||||
signed char next=0;
|
||||
for (unsigned int i=0; i<s->samples; i++) {
|
||||
next+=reader.readC();
|
||||
s->data8[i]=next;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for (DivSample* i: toAdd) {
|
||||
ds.sample.push_back(i);
|
||||
}
|
||||
toAdd.clear();
|
||||
} else {
|
||||
if (!reader.seek(headerSeek,SEEK_SET)) {
|
||||
logE("premature end of file!");
|
||||
lastError="incomplete file";
|
||||
delete[] file;
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
ds.ins.push_back(ins);
|
||||
}
|
||||
|
||||
ds.sampleLen=ds.sample.size();
|
||||
if (ds.sampleLen>256) {
|
||||
logE("too many samples!");
|
||||
|
|
|
|||
Loading…
Reference in a new issue