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sfont.cpp
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sfont.cpp
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//=============================================================================
// MuseScore
// Linux Music Score Editor
// $Id:$
//
// Copyright (C) 2010 Werner Schweer and others
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//=============================================================================
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <vorbis/vorbisenc.h>
#include <vorbis/codec.h>
#include <vorbis/vorbisfile.h>
#include "sfont.h"
#include "time.h"
#ifndef SFTOOLS_NOXML
#include "xml.h"
#include <sndfile.h>
#endif
#include <QtCore/QFile>
using namespace SfTools;
// #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 = nullptr;
start = 0;
end = 0;
loopstart = 0;
loopend = 0;
samplerate = 0;
origpitch = 0;
pitchadj = 0;
sampleLink = 0;
sampletype = 0;
}
Sample::~Sample()
{
free(name);
}
//---------------------------------------------------------
// Instrument
//---------------------------------------------------------
Instrument::Instrument()
{
name = nullptr;
}
Instrument::~Instrument()
{
free(name);
}
//---------------------------------------------------------
// SoundFont
//---------------------------------------------------------
SoundFont::SoundFont(const QString& s)
{
path = s;
engine = nullptr;
name = nullptr;
date = nullptr;
comment = nullptr;
tools = nullptr;
creator = nullptr;
product = nullptr;
copyright = nullptr;
irom = nullptr;
version.major = 0;
version.minor = 0;
iver.major = 0;
iver.minor = 0;
_smallSf = false;
}
SoundFont::~SoundFont()
{
free(engine);
free(name);
free(date);
free(comment);
free(tools);
free(creator);
free(product);
free(copyright);
free(irom);
}
//---------------------------------------------------------
// 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(sfVersionTag * v)
{
unsigned char data[4];
if (file->read((char*)data, 4) != 4)
throw(QString("unexpected end of file\n"));
v->major = data[0] + (data[1] << 8);
v->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(&version);
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('s','m','2','4'): // audio samples (24-bit part)
skip(len); // Just skip it
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
irom = readString(len);
break;
case FOURCC('i', 'v', 'e', 'r'): // sample rom version
readVersion(&iver);
break;
default:
skip(len);
throw(QString("unknown fourcc <%1>").arg(fourcc));
}
}
//---------------------------------------------------------
// 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();
s->sampleLink = readWord();
s->sampletype = readWord();
// printf("readFontHeader %d %d %d %d\n", s->start, s->end, s->loopstart, s->loopend);
samples.append(s);
}
skip(46); // trailing record
}
//---------------------------------------------------------
// write
//---------------------------------------------------------
bool SoundFont::write()
{
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);
if (irom)
writeStringSection("irom", irom);
writeIver();
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;
}
bool SoundFont::compress(QFile* f, double oggQuality, double oggAmp, qint64 oggSerial)
{
file = f;
_compress = true;
_oggQuality = oggQuality;
_oggAmp = oggAmp;
_oggSerial = oggSerial;
return write();
}
bool SoundFont::uncompress(QFile* f)
{
file = f;
_compress = false;
return write();
}
//---------------------------------------------------------
// 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 (_compress) {
version.major = 3;
version.minor = 0;
} else {
version.major = 2;
version.minor = 1;
}
data[0] = version.major;
data[1] = version.major >> 8;
data[2] = version.minor;
data[3] = version.minor >> 8;
write((char*)data, 4);
}
//---------------------------------------------------------
// writeIVer
//---------------------------------------------------------
void SoundFont::writeIver()
{
write("iver", 4);
writeDword(4);
unsigned char data[4];
data[0] = iver.major;
data[1] = iver.major >> 8;
data[2] = iver.minor;
data[3] = iver.minor >> 8;
write((char*)data, 4);
}
//---------------------------------------------------------
// writeSmpl
//---------------------------------------------------------
void SoundFont::writeSmpl()
{
write("smpl", 4);
qint64 pos = file->pos();
writeDword(0);
int currentSamplePos = 0;
if (_compress) {
// Compress wave data
foreach(Sample* s, samples) {
// Loop start and end are now based on the beginning of each sample
s->loopstart -= s->start;
s->loopend -= s->start;
// OGG flag added
s->sampletype |= 0x10;
int len = writeCompressedSample(s); // In byte
s->start = currentSamplePos;
currentSamplePos += len;
s->end = currentSamplePos;
}
}
else {
// Uncompress from OGG data
foreach(Sample* s, samples) {
// OGG flag is removed
s->sampletype &= ~0x10;
int len = writeUncompressedSample(s) / 2; // In sample data points (16 bits)
s->start = currentSamplePos;
currentSamplePos += len;
s->end = currentSamplePos;
// Loop start and end are now based on the beginning of the section "smpl"
s->loopstart += s->start;
s->loopend += s->start;
}
}
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;
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)
writeModulator(m);
}
ModulatorList mod;
memset(&mod, 0, sizeof(mod));
writeModulator(&mod);
}
//---------------------------------------------------------
// writeModulator
//---------------------------------------------------------
void SoundFont::writeModulator(const ModulatorList* m)
{
writeWord(m->src);
writeWord(m->dst);
writeShort(m->amount);
writeWord(m->amtSrc);
writeWord(m->transform);
}
//---------------------------------------------------------
// writeGen
//---------------------------------------------------------
void SoundFont::writeGen(const char* fourcc, QList<Zone*>* zones)
{
write(fourcc, 4);
int n = 0;
foreach(const Zone* z, *zones)
n += z->generators.size();
writeDword((n + 1) * 4);
foreach(const Zone* zone, *zones) {
foreach(const GeneratorList* g, zone->generators)
writeGenerator(g);
}
GeneratorList gen;
memset(&gen, 0, sizeof(gen));
writeGenerator(&gen);
}
//---------------------------------------------------------
// writeGenerator
//---------------------------------------------------------
void SoundFont::writeGenerator(const GeneratorList* g)
{
writeWord(g->gen);
if (g->gen == Gen_KeyRange || g->gen == Gen_VelRange) {
writeByte(g->amount.lo);
writeByte(g->amount.hi);
}
else if (g->gen == Gen_Instrument)
writeWord(g->amount.uword);
else
writeWord(g->amount.sword);
}
//---------------------------------------------------------
// writeInst
//---------------------------------------------------------
void SoundFont::writeInst()
{
write("inst", 4);
int n = instruments.size();
writeDword((n + 1) * 22);
int zoneIdx = 0;
foreach(const Instrument* p, instruments) {
writeInstrument(zoneIdx, p);
zoneIdx += p->zones.size();
}
Instrument p;
writeInstrument(zoneIdx, &p);
}
//---------------------------------------------------------