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/*
Rosegarden
A sequencer and musical notation editor.
This program is Copyright 2000-2008
Guillaume Laurent <glaurent@telegraph-road.org>,
Chris Cannam <cannam@all-day-breakfast.com>,
Richard Bown <bownie@bownie.com>
The moral right of the authors to claim authorship of this work
has been asserted.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version. See the file
COPYING included with this distribution for more information.
*/
#include "SF2PatchExtractor.h"
#include <iostream>
#include <fstream>
#include <string>
#include <map>
#include <sys/types.h>
namespace Rosegarden
{
using std::string;
using std::cerr;
using std::endl;
using std::ifstream;
using std::ios;
struct Chunk
{
char id[4];
u_int32_t size;
Chunk(ifstream *, bool idOnly = false);
bool isa(std::string s);
};
Chunk::Chunk(ifstream *file, bool idOnly)
{
file->read((char *)this->id, 4);
size = 0;
if (idOnly)
return ;
unsigned char sz[4];
file->read((char *)sz, 4);
for (int i = 0; i < 4; ++i)
size += sz[i] << (i * 8);
}
bool
Chunk::isa(string s)
{
return string(id, 4) == s;
}
bool
SF2PatchExtractor::isSF2File(string fileName)
{
ifstream *file = new ifstream(fileName.c_str(), ios::in | ios::binary);
if (!file)
throw FileNotFoundException();
Chunk riffchunk(file);
if (!riffchunk.isa("RIFF")) {
file->close();
return false;
}
Chunk sfbkchunk(file, true);
if (!sfbkchunk.isa("sfbk")) {
file->close();
return false;
}
file->close();
return true;
}
SF2PatchExtractor::Device
SF2PatchExtractor::read(string fileName)
{
Device device;
ifstream *file = new ifstream(fileName.c_str(), ios::in | ios::binary);
if (!file)
throw FileNotFoundException();
Chunk riffchunk(file);
if (!riffchunk.isa("RIFF")) {
file->close();
throw WrongFileFormatException();
}
Chunk sfbkchunk(file, true);
if (!sfbkchunk.isa("sfbk")) {
file->close();
throw WrongFileFormatException();
}
while (!file->eof()) {
Chunk chunk(file);
if (!chunk.isa("LIST")) {
// cerr << "Skipping " << string(chunk.id, 4) << endl;
file->seekg(chunk.size, ios::cur);
continue;
}
Chunk listchunk(file, true);
if (!listchunk.isa("pdta")) {
// cerr << "Skipping " << string(id, 4) << endl;
file->seekg(chunk.size - 4, ios::cur);
continue;
}
int size = chunk.size - 4;
while (size > 0) {
Chunk pdtachunk(file);
size -= 8 + pdtachunk.size;
if (file->eof()) {
break;
}
if (!pdtachunk.isa("phdr")) { // preset header
// cerr << "Skipping " << string(pdtachunk.id, 4) << endl;
file->seekg(pdtachunk.size, ios::cur);
continue;
}
int presets = pdtachunk.size / 38;
for (int i = 0; i < presets; ++i) {
char name[21];
u_int16_t bank, program;
file->read((char *)name, 20);
name[20] = '\0';
file->read((char *)&program, 2);
file->read((char *)&bank, 2);
// cerr << "Read name as " << name << endl;
file->seekg(14, ios::cur);
if (i == presets - 1 &&
bank == 255 &&
program == 255 &&
string(name) == "EOP")
continue;
device[bank][program] = name;
}
}
}
file->close();
return device;
}
}
#ifdef TEST_SF2_PATCH_EXTRACTOR
int main(int argc, char **argv)
{
using SF2PatchExtractor;
if (argc != 2) {
std::cerr << "Usage: " << argv[0] << " sf2filename" << std::endl;
return 2;
}
try {
SF2PatchExtractor::Device device =
SF2PatchExtractor::read(argv[1]);
std::cerr << "Done. Presets are:" << std::endl;
for (SF2PatchExtractor::Device::iterator di = device.begin();
di != device.end(); ++di) {
std::cerr << "Bank " << di->first << ":" << std::endl;
for (SF2PatchExtractor::Bank::iterator bi = di->second.begin();
bi != di->second.end();
++bi) {
std::cerr << "Program " << bi->first << ": \"" << bi->second
<< "\"" << std::endl;
}
}
} catch (SF2PatchExtractor::WrongFileFormatException) {
std::cerr << "Wrong file format" << std::endl;
} catch (SF2PatchExtractor::FileNotFoundException) {
std::cerr << "File not found or couldn't be opened" << std::endl;
}
return 0;
}
#endif
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