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sfont.cpp
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sfont.cpp
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//=============================================================================
// MuseScore sftools
//
// Copyright (C) 2010 Werner Schweer and others
//
// This work is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// In addition, as a special exception, licensor gives permission to
// link the code of this work with the OpenSSL Library (or with modified
// versions of OpenSSL that use the same license as OpenSSL), and
// distribute linked combinations including the two. You must obey the
// GNU General Public License in all respects for all of the code used
// other than OpenSSL. If you modify this file, you may extend this
// exception to your version of the file, but you are not obligated to
// do so. If you do not wish to do so, delete this exception statement
// from your version. (This exception is necessary should this work be
// included in a GPL-licenced work.)
//
// See COPYING.LIB for the licence text and disclaimer of warranty.
//=============================================================================
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <sndfile.h>
#include <vorbis/vorbisenc.h>
#include "sfont.h"
#include "xml.h"
#include "time.h"
#include <QtCore/QFile>
extern bool smallSf; // create small sf
// #define DEBUG
#define BE_SHORT(x) ((((x)&0xFF)<<8) | (((x)>>8)&0xFF))
#ifdef __i486__
#define BE_LONG(x) \
({ int __value; \
asm ("bswap %1; movl %1,%0" : "=g" (__value) : "r" (x)); \
__value; })
#else
#define BE_LONG(x) ((((x)&0xFF)<<24) | \
(((x)&0xFF00)<<8) | \
(((x)&0xFF0000)>>8) | \
(((x)>>24)&0xFF))
#endif
#define FOURCC(a, b, c, d) a << 24 | b << 16 | c << 8 | d
#define BLOCK_SIZE 1024
static const bool writeCompressed = true;
//---------------------------------------------------------
// Sample
//---------------------------------------------------------
Sample::Sample()
{
name = 0;
}
Sample::~Sample()
{
free(name);
}
//---------------------------------------------------------
// Instrument
//---------------------------------------------------------
Instrument::Instrument()
{
name = 0;
}
Instrument::~Instrument()
{
free(name);
}
//---------------------------------------------------------
// SoundFont
//---------------------------------------------------------
SoundFont::SoundFont(const QString& s)
{
path = s;
engine = 0;
name = 0;
date = 0;
comment = 0;
tools = 0;
creator = 0;
product = 0;
copyright = 0;
}
SoundFont::~SoundFont()
{
free(engine);
free(name);
free(date);
free(comment);
free(tools);
free(creator);
free(product);
free(copyright);
}
//---------------------------------------------------------
// read
//---------------------------------------------------------
bool SoundFont::read()
{
file = new QFile(path);
if (!file->open(QIODevice::ReadOnly)) {
fprintf(stderr, "cannot open <%s>\n", qPrintable(path));
delete file;
return false;
}
try {
int len = readFourcc("RIFF");
readSignature("sfbk");
len -= 4;
while (len) {
int len2 = readFourcc("LIST");
len -= (len2 + 8);
char fourcc[5];
fourcc[0] = 0;
readSignature(fourcc);
fourcc[4] = 0;
len2 -= 4;
while (len2) {
fourcc[0] = 0;
int len3 = readFourcc(fourcc);
fourcc[4] = 0;
len2 -= (len3 + 8);
readSection(fourcc, len3);
}
}
}
catch (QString s) {
printf("read sf file failed: %s\n", qPrintable(s));
delete file;
return false;
}
delete file;
return true;
}
//---------------------------------------------------------
// skip
//---------------------------------------------------------
void SoundFont::skip(int n)
{
qint64 pos = file->pos();
if (!file->seek(pos + n))
throw(QString("unexpected end of file\n"));
}
//---------------------------------------------------------
// readFourcc
//---------------------------------------------------------
int SoundFont::readFourcc(char* signature)
{
readSignature(signature);
return readDword();
}
int SoundFont::readFourcc(const char* signature)
{
readSignature(signature);
return readDword();
}
//---------------------------------------------------------
// readSignature
//---------------------------------------------------------
void SoundFont::readSignature(const char* signature)
{
char fourcc[4];
readSignature(fourcc);
if (memcmp(fourcc, signature, 4) != 0)
throw(QString("fourcc <%1> expected").arg(signature));
}
void SoundFont::readSignature(char* signature)
{
if (file->read(signature, 4) != 4)
throw(QString("unexpected end of file\n"));
}
//---------------------------------------------------------
// readDword
//---------------------------------------------------------
unsigned SoundFont::readDword()
{
unsigned format;
if (file->read((char*)&format, 4) != 4)
throw(QString("unexpected end of file\n"));
if (QSysInfo::ByteOrder == QSysInfo::BigEndian)
return BE_LONG(format);
else
return format;
}
//---------------------------------------------------------
// writeDword
//---------------------------------------------------------
void SoundFont::writeDword(int val)
{
if (QSysInfo::ByteOrder == QSysInfo::BigEndian)
val = BE_LONG(val);
write((char*)&val, 4);
}
//---------------------------------------------------------
// writeWord
//---------------------------------------------------------
void SoundFont::writeWord(unsigned short int val)
{
if (QSysInfo::ByteOrder == QSysInfo::BigEndian)
val = BE_SHORT(val);
write((char*)&val, 2);
}
//---------------------------------------------------------
// writeByte
//---------------------------------------------------------
void SoundFont::writeByte(unsigned char val)
{
write((char*)&val, 1);
}
//---------------------------------------------------------
// writeChar
//---------------------------------------------------------
void SoundFont::writeChar(char val)
{
write((char*)&val, 1);
}
//---------------------------------------------------------
// writeShort
//---------------------------------------------------------
void SoundFont::writeShort(short val)
{
if (QSysInfo::ByteOrder == QSysInfo::BigEndian)
val = BE_SHORT(val);
write((char*)&val, 2);
}
//---------------------------------------------------------
// readWord
//---------------------------------------------------------
int SoundFont::readWord()
{
unsigned short format;
if (file->read((char*)&format, 2) != 2)
throw(QString("unexpected end of file\n"));
if (QSysInfo::ByteOrder == QSysInfo::BigEndian)
return BE_SHORT(format);
else
return format;
}
//---------------------------------------------------------
// readShort
//---------------------------------------------------------
int SoundFont::readShort()
{
short format;
if (file->read((char*)&format, 2) != 2)
throw(QString("unexpected end of file\n"));
if (QSysInfo::ByteOrder == QSysInfo::BigEndian)
return BE_SHORT(format);
else
return format;
}
//---------------------------------------------------------
// readByte
//---------------------------------------------------------
int SoundFont::readByte()
{
uchar val;
if (file->read((char*)&val, 1) != 1)
throw(QString("unexpected end of file\n"));
return val;
}
//---------------------------------------------------------
// readChar
//---------------------------------------------------------
int SoundFont::readChar()
{
char val;
if (file->read(&val, 1) != 1)
throw(QString("unexpected end of file\n"));
return val;
}
//---------------------------------------------------------
// readVersion
//---------------------------------------------------------
void SoundFont::readVersion()
{
unsigned char data[4];
if (file->read((char*)data, 4) != 4)
throw(QString("unexpected end of file\n"));
version.major = data[0] + (data[1] << 8);
version.minor = data[2] + (data[3] << 8);
}
//---------------------------------------------------------
// readString
//---------------------------------------------------------
char* SoundFont::readString(int n)
{
char data[2500];
if (file->read((char*)data, n) != n)
throw(QString("unexpected end of file\n"));
if (data[n-1] != 0)
data[n] = 0;
return strdup(data);
}
//---------------------------------------------------------
// readSection
//---------------------------------------------------------
void SoundFont::readSection(const char* fourcc, int len)
{
printf("readSection <%s> len %d\n", fourcc, len);
switch(FOURCC(fourcc[0], fourcc[1], fourcc[2], fourcc[3])) {
case FOURCC('i', 'f', 'i', 'l'): // version
readVersion();
break;
case FOURCC('I','N','A','M'): // sound font name
name = readString(len);
break;
case FOURCC('i','s','n','g'): // target render engine
engine = readString(len);
break;
case FOURCC('I','P','R','D'): // product for which the bank was intended
product = readString(len);
break;
case FOURCC('I','E','N','G'): // sound designers and engineers for the bank
creator = readString(len);
break;
case FOURCC('I','S','F','T'): // SoundFont tools used to create and alter the bank
tools = readString(len);
break;
case FOURCC('I','C','R','D'): // date of creation of the bank
date = readString(len);
break;
case FOURCC('I','C','M','T'): // comments on the bank
comment = readString(len);
break;
case FOURCC('I','C','O','P'): // copyright message
copyright = readString(len);
break;
case FOURCC('s','m','p','l'): // the digital audio samples
samplePos = file->pos();
sampleLen = len;
skip(len);
break;
case FOURCC('p','h','d','r'): // preset headers
readPhdr(len);
break;
case FOURCC('p','b','a','g'): // preset index list
readBag(len, &pZones);
break;
case FOURCC('p','m','o','d'): // preset modulator list
readMod(len, &pZones);
break;
case FOURCC('p','g','e','n'): // preset generator list
readGen(len, &pZones);
break;
case FOURCC('i','n','s','t'): // instrument names and indices
readInst(len);
break;
case FOURCC('i','b','a','g'): // instrument index list
readBag(len, &iZones);
break;
case FOURCC('i','m','o','d'): // instrument modulator list
readMod(len, &iZones);
break;
case FOURCC('i','g','e','n'): // instrument generator list
readGen(len, &iZones);
break;
case FOURCC('s','h','d','r'): // sample headers
readShdr(len);
break;
case FOURCC('i', 'r', 'o', 'm'): // sample rom
case FOURCC('i', 'v', 'e', 'r'): // sample rom version
default:
skip(len);
throw(QString("unknown fourcc <%1>").arg(fourcc));
break;
}
}
//---------------------------------------------------------
// readPhdr
//---------------------------------------------------------
void SoundFont::readPhdr(int len)
{
if (len < (38 * 2))
throw(QString("phdr too short"));
if (len % 38)
throw(QString("phdr not a multiple of 38"));
int n = len / 38;
if (n <= 1) {
printf("no presets\n");
skip(len);
return;
}
int index1 = 0, index2;
for (int i = 0; i < n; ++i) {
Preset* preset = new Preset;
preset->name = readString(20);
preset->preset = readWord();
preset->bank = readWord();
index2 = readWord();
preset->library = readDword();
preset->genre = readDword();
preset->morphology = readDword();
if (index2 < index1)
throw("preset header indices not monotonic");
if (i > 0) {
int n = index2 - index1;
while (n--) {
Zone* z = new Zone;
presets.back()->zones.append(z);
pZones.append(z);
}
}
index1 = index2;
presets.append(preset);
}
presets.takeLast();
}
//---------------------------------------------------------
// readBag
//---------------------------------------------------------
void SoundFont::readBag(int len, QList<Zone*>* zones)
{
if (len % 4)
throw(QString("bag size not a multiple of 4"));
int gIndex2, mIndex2;
int gIndex1 = readWord();
int mIndex1 = readWord();
len -= 4;
foreach(Zone* zone, *zones) {
gIndex2 = readWord();
mIndex2 = readWord();
len -= 4;
if (len < 0)
throw(QString("bag size too small"));
if (gIndex2 < gIndex1)
throw("generator indices not monotonic");
if (mIndex2 < mIndex1)
throw("modulator indices not monotonic");
int n = mIndex2 - mIndex1;
while (n--)
zone->modulators.append(new ModulatorList);
n = gIndex2 - gIndex1;
while (n--)
zone->generators.append(new GeneratorList);
gIndex1 = gIndex2;
mIndex1 = mIndex2;
}
}
//---------------------------------------------------------
// readMod
//---------------------------------------------------------
void SoundFont::readMod(int size, QList<Zone*>* zones)
{
foreach(Zone* zone, *zones) {
foreach(ModulatorList* m, zone->modulators) {
size -= 10;
if (size < 0)
throw(QString("pmod size mismatch"));
m->src = static_cast<Modulator>(readWord());
m->dst = static_cast<Generator>(readWord());
m->amount = readShort();
m->amtSrc = static_cast<Modulator>(readWord());
m->transform = static_cast<Transform>(readWord());
}
}
if (size != 10)
throw(QString("modulator list size mismatch"));
skip(10);
}
//---------------------------------------------------------
// readGen
//---------------------------------------------------------
void SoundFont::readGen(int size, QList<Zone*>* zones)
{
if (size % 4)
throw(QString("bad generator list size"));
foreach (Zone* zone, *zones) {
size -= (zone->generators.size() * 4);
if (size < 0)
break;
foreach (GeneratorList* gen, zone->generators) {
gen->gen = static_cast<Generator>(readWord());
if (gen->gen == Gen_KeyRange || gen->gen == Gen_VelRange) {
gen->amount.lo = readByte();
gen->amount.hi = readByte();
}
else if (gen->gen == Gen_Instrument)
gen->amount.uword = readWord();
else
gen->amount.sword = readWord();
}
}
if (size != 4)
throw(QString("generator list size mismatch %1 != 4").arg(size));
skip(size);
}
//---------------------------------------------------------
// readInst
//---------------------------------------------------------
void SoundFont::readInst(int size)
{
int n = size / 22;
int index1 = 0, index2;
for (int i = 0; i < n; ++i) {
Instrument* instrument = new Instrument;
instrument->name = readString(20);
index2 = readWord();
if (index2 < index1)
throw("instrument header indices not monotonic");
if (i > 0) {
int n = index2 - index1;
while (n--) {
Zone* z = new Zone;
instruments.back()->zones.append(z);
iZones.append(z);
}
}
index1 = index2;
instruments.append(instrument);
}
instruments.takeLast();
}
//---------------------------------------------------------
// readShdr
//---------------------------------------------------------
void SoundFont::readShdr(int size)
{
int n = size / 46;
for (int i = 0; i < n-1; ++i) {
Sample* s = new Sample;
s->name = readString(20);
s->start = readDword();
s->end = readDword();
s->loopstart = readDword();
s->loopend = readDword();
s->samplerate = readDword();
s->origpitch = readByte();
s->pitchadj = readChar();
readWord(); // sampleLink
s->sampletype = readWord();
s->loopstart -= s->start;
s->loopend -= s->start;
// printf("readFontHeader %d %d %d %d\n", s->start, s->end, s->loopstart, s->loopend);
samples.append(s);
}
skip(46); // trailing record
}
//---------------------------------------------------------
// writeXml
//---------------------------------------------------------
bool SoundFont::writeXml(QFile* f)
{
Xml xml(f);
xml.header();
xml.stag("Sfont");
xml.tag("version", QString("%1.%2").arg(version.major).arg(version.minor));
if (name)
xml.tag("name", Xml::xmlString(name));
if (engine)
xml.tag("engine", Xml::xmlString(engine));
if (date)
xml.tag("date", Xml::xmlString(date));
if (comment)
xml.tag("comment", Xml::xmlString(comment));
if (tools)
xml.tag("tools", Xml::xmlString(tools));
if (creator)
xml.tag("creator", Xml::xmlString(creator));
if (product)
xml.tag("product", Xml::xmlString(product));
if (copyright)
xml.tag("copyright", Xml::xmlString(copyright));
foreach(Preset* p, presets) {
xml.stag(QString("Preset name=\"%1\" preset=\"%2\" bank=\"%3\"")
.arg(p->name).arg(p->preset).arg(p->bank));
foreach(Zone* z, p->zones)
write(xml, z);
xml.etag();
}
foreach(Instrument* instrument, instruments) {
xml.stag(QString("Instrument name=\"%1\"").arg(instrument->name));
foreach(Zone* z, instrument->zones)
write(xml, z);
xml.etag();
}
int idx = 0;
foreach(Sample* s, samples) {
xml.stag(QString("Sample name=\"%1\"").arg(s->name));
xml.tag("start", s->start);
xml.tag("end", s->end);
xml.tag("loopstart", s->loopstart);
xml.tag("loopend", s->loopend);
xml.tag("samplerate", s->samplerate);
xml.tag("origpitch", s->origpitch);
if (s->pitchadj)
xml.tag("pitchadj", s->pitchadj);
xml.tag("sampletype", s->sampletype);
xml.etag();
writeSampleFile(s, QString("%1").arg(idx));
++idx;
}
xml.etag();
return true;
}
static const char* generatorNames[] = {
"StartAddrOfs", "EndAddrOfs", "StartLoopAddrOfs",
"EndLoopAddrOfs", "StartAddrCoarseOfs", "ModLFO2Pitch",
"VibLFO2Pitch", "ModEnv2Pitch", "FilterFc", "FilterQ",
"ModLFO2FilterFc", "ModEnv2FilterFc", "EndAddrCoarseOfs",
"ModLFO2Vol", "Unused1", "ChorusSend", "ReverbSend", "Pan",
"Unused2", "Unused3", "Unused4",
"ModLFODelay", "ModLFOFreq", "VibLFODelay", "VibLFOFreq",
"ModEnvDelay", "ModEnvAttack", "ModEnvHold", "ModEnvDecay",
"ModEnvSustain", "ModEnvRelease", "Key2ModEnvHold",
"Key2ModEnvDecay", "VolEnvDelay", "VolEnvAttack",
"VolEnvHold", "VolEnvDecay", "VolEnvSustain", "VolEnvRelease",
"Key2VolEnvHold", "Key2VolEnvDecay", "Instrument",
"Reserved1", "KeyRange", "VelRange",
"StartLoopAddrCoarseOfs", "Keynum", "Velocity",
"Attenuation", "Reserved2", "EndLoopAddrCoarseOfs",
"CoarseTune", "FineTune", "SampleId", "SampleModes",
"Reserved3", "ScaleTune", "ExclusiveClass", "OverrideRootKey",
"Dummy"
};
//---------------------------------------------------------
// write
//---------------------------------------------------------
void SoundFont::write(Xml& xml, Zone* z)
{
xml.stag("Zone");
foreach(GeneratorList* g, z->generators) {
const char* name = generatorNames[g->gen];
if (g->gen == Gen_KeyRange || g->gen == Gen_VelRange)
xml.tagE(QString("Generator name=\"%1\" lo=\"%2\" hi=\"%3\"")
.arg(name).arg(g->amount.lo).arg(g->amount.hi));
else if (g->gen == Gen_Instrument) {
int idx = g->amount.uword;
xml.tag("Instrument", instruments[idx]->name);
}
else if (g->gen == Gen_SampleId) {
int idx = g->amount.uword;
xml.tag("SampleId", samples[idx]->name);
}
else
xml.tagE(QString("Generator name=\"%1\" val=\"%2\"")
.arg(name).arg(g->amount.sword));
}
foreach(ModulatorList* m, z->modulators) {
xml.stag("Modulator");
xml.tag("src", m->src);
xml.tag("dst", m->dst);
xml.tag("amount", m->amount);
xml.tag("amtSrc", m->amtSrc);
xml.tag("transform", m->transform);
xml.etag();
}
xml.etag();
}
//---------------------------------------------------------
// write
//---------------------------------------------------------
bool SoundFont::write(QFile* f, double oggQuality, double oggAmp, qint64 oggSerial)
{
file = f;
_oggQuality = oggQuality;
_oggAmp = oggAmp;
_oggSerial = oggSerial;
qint64 riffLenPos;
qint64 listLenPos;
try {
file->write("RIFF", 4);
riffLenPos = file->pos();
writeDword(0);
file->write("sfbk", 4);
file->write("LIST", 4);
listLenPos = file->pos();
writeDword(0);
file->write("INFO", 4);
writeIfil();
if (name)
writeStringSection("INAM", name);
if (engine)
writeStringSection("isng", engine);
if (product)
writeStringSection("IPRD", product);
if (creator)
writeStringSection("IENG", creator);
if (tools)
writeStringSection("ISFT", tools);
if (date)
writeStringSection("ICRD", date);
if (comment)
writeStringSection("ICMT", comment);
if (copyright)
writeStringSection("ICOP", copyright);
qint64 pos = file->pos();
file->seek(listLenPos);
writeDword(pos - listLenPos - 4);
file->seek(pos);
file->write("LIST", 4);
listLenPos = file->pos();
writeDword(0);
file->write("sdta", 4);
writeSmpl();
pos = file->pos();
file->seek(listLenPos);
writeDword(pos - listLenPos - 4);
file->seek(pos);
file->write("LIST", 4);
listLenPos = file->pos();
writeDword(0);
file->write("pdta", 4);
writePhdr();
writeBag("pbag", &pZones);
writeMod("pmod", &pZones);
writeGen("pgen", &pZones);
writeInst();
writeBag("ibag", &iZones);
writeMod("imod", &iZones);
writeGen("igen", &iZones);
writeShdr();
pos = file->pos();
file->seek(listLenPos);
writeDword(pos - listLenPos - 4);
file->seek(pos);
qint64 endPos = file->pos();
file->seek(riffLenPos);
writeDword(endPos - riffLenPos - 4);
}
catch (QString s) {
printf("write sf file failed: %s\n", qPrintable(s));
return false;
}
return true;
}
//---------------------------------------------------------
// readXml
//---------------------------------------------------------
bool SoundFont::readXml(QFile* f)
{
QDomDocument doc;
int line, column;
QString err;
if (!doc.setContent(f, false, &err, &line, &column)) {
QString s;
printf("error reading file %s at line %d column %d: %s\n",
qPrintable(f->fileName()), line, column, qPrintable(err));
return false;
}
return true;
}
//---------------------------------------------------------
// write
//---------------------------------------------------------
void SoundFont::write(const char* p, int n)
{
if (file->write(p, n) != n)
throw(QString("write error"));
}
//---------------------------------------------------------
// writeStringSection
//---------------------------------------------------------
void SoundFont::writeStringSection(const char* fourcc, char* s)
{
write(fourcc, 4);
int nn = strlen(s) + 1;
int n = ((nn + 1) / 2) * 2;
writeDword(n);
write(s, nn);
if (n - nn) {
char c = 0;
write(&c, 1);
}
}
//---------------------------------------------------------
// writeIfil
//---------------------------------------------------------
void SoundFont::writeIfil()
{
write("ifil", 4);
writeDword(4);
unsigned char data[4];
if (writeCompressed)
version.major = 3;
data[0] = version.major;
data[1] = version.major >> 8;
data[2] = version.minor;
data[3] = version.minor >> 8;
write((char*)data, 4);
}
//---------------------------------------------------------
// writeSmpl
//---------------------------------------------------------
void SoundFont::writeSmpl()
{
write("smpl", 4);
qint64 pos = file->pos();
writeDword(0);
int sampleLen = 0;
if (writeCompressed) {
foreach(Sample* s, samples) {
s->sampletype |= 0x10;
int len = writeCompressedSample(s);
s->start = sampleLen;
sampleLen += len;
s->end = sampleLen;
}
}
else {
char* buffer = new char[sampleLen];
QFile f(path);
if (!f.open(QIODevice::ReadOnly))
throw(QString("cannot open <%1>").arg(f.fileName()));
foreach(Sample* s, samples) {
f.seek(samplePos + s->start * sizeof(short));
int len = (s->end - s->start) * sizeof(short);
f.read(buffer, len);
write(buffer, len);
s->start = sampleLen / sizeof(short);
sampleLen += len;
s->end = sampleLen / sizeof(short);
s->loopstart += s->start;
s->loopend += s->start;
}
f.close();
delete[] buffer;
}
qint64 npos = file->pos();
file->seek(pos);
writeDword(npos - pos - 4);
file->seek(npos);
}
//---------------------------------------------------------
// writePhdr
//---------------------------------------------------------
void SoundFont::writePhdr()
{
write("phdr", 4);
int n = presets.size();
writeDword((n + 1) * 38);
int zoneIdx = 0;
foreach(const Preset* p, presets) {
writePreset(zoneIdx, p);
zoneIdx += p->zones.size();
}
Preset p;
memset(&p, sizeof(p), 0);
writePreset(zoneIdx, &p);
}
//---------------------------------------------------------
// writePreset
//---------------------------------------------------------
void SoundFont::writePreset(int zoneIdx, const Preset* preset)
{
char name[20];
memset(name, 0, 20);
if (preset->name)
memcpy(name, preset->name, strlen(preset->name));
write(name, 20);
writeWord(preset->preset);
writeWord(preset->bank);
writeWord(zoneIdx);
writeDword(preset->library);
writeDword(preset->genre);
writeDword(preset->morphology);
}
//---------------------------------------------------------
// writeBag
//---------------------------------------------------------
void SoundFont::writeBag(const char* fourcc, QList<Zone*>* zones)
{
write(fourcc, 4);
int n = zones->size();
writeDword((n + 1) * 4);
int gIndex = 0;
int pIndex = 0;
foreach(const Zone* z, *zones) {
writeWord(gIndex);
writeWord(pIndex);
gIndex += z->generators.size();
pIndex += z->modulators.size();
}
writeWord(gIndex);
writeWord(pIndex);
}
//---------------------------------------------------------
// writeMod
//---------------------------------------------------------
void SoundFont::writeMod(const char* fourcc, const QList<Zone*>* zones)
{
write(fourcc, 4);
int n = 0;
foreach(const Zone* z, *zones)
n += z->modulators.size();
writeDword((n + 1) * 10);
foreach(const Zone* zone, *zones) {
foreach(const ModulatorList* m, zone->modulators)