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#include "adpcm.h"
#include "pak.h"
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <vector>
unsigned short decode_channels = 2;
void process(Adpcm& adpcm, std::vector<char> const& data, std::ostream& outfile) {
std::vector<short> pcm(adpcm.chunkFrames() * decode_channels);
adpcm.decodeChunk(&data[0], &pcm[0]);
outfile.write(reinterpret_cast<char*>(&pcm[0]), pcm.size() * sizeof(short));
}
void writeWavHeader(std::ostream& outfile, unsigned ch, unsigned sr, unsigned samples) {
unsigned bps = ch * 2; // Bytes per sample
unsigned datasize = bps * samples;
unsigned size = datasize + 0x2C;
outfile.write("RIFF" ,4); // RIFF chunk
{ unsigned int tmp=size-0x8 ; outfile.write((char*)(&tmp),4); } // RIFF chunk size
outfile.write("WAVEfmt ",8); // WAVEfmt header
{ int tmp=0x00000010 ; outfile.write((char*)(&tmp),4); } // Always 0x10
{ short tmp=0x0001 ; outfile.write((char*)(&tmp),2); } // Always 1
{ short tmp = ch; outfile.write((char*)(&tmp),2); } // Number of channels
{ int tmp = sr; outfile.write((char*)(&tmp),4); } // Sample rate
{ int tmp = bps * sr; outfile.write((char*)(&tmp),4); } // Bytes per second
{ short tmp = bps; outfile.write((char*)(&tmp),2); } // Bytes per frame
{ short tmp = 16; outfile.write((char*)(&tmp),2); } // Bits per sample
outfile.write("data",4); // data chunk
{ int tmp = datasize; outfile.write((char*)(&tmp),4); }
}
int main(int argc, char** argv) {
std::string in, out, pak;
if( argc == 3 ) {
in = argv[1];
out = argv[2];
} else if( argc == 4 ) {
pak = argv[1];
in = argv[2];
out = argv[3];
} else {
std::cout << "Usage: " << argv[0] << " [archive.pak] input.mib output.wav" << std::endl;
return EXIT_FAILURE;
}
// FIXME: read from music.mih
const unsigned sr = 48000;
const unsigned interleave = 0xB800;
Adpcm adpcm(interleave, decode_channels);
std::ofstream outf;
if (out != "-") outf.open(out.c_str(), std::ios::binary);
std::ostream& outfile = (out != "-" ? outf : std::cout);
std::vector<char> data(adpcm.chunkBytes());
if (pak.empty()) {
std::ifstream infile(in.c_str(), std::ios::binary);
writeWavHeader(outfile, 2, sr, sr * 1000 /* FIXME: calculate real length */);
while (infile.read(&data[0], adpcm.chunkBytes()) && infile.seekg(adpcm.chunkBytes(), std::ios::cur)) {
process(adpcm, data, outfile);
}
} else {
Pak p(pak);
PakFile const& infile(p[in]);
writeWavHeader(outfile, 2, sr, infile.size / (adpcm.chunkBytes() * 2) * adpcm.chunkFrames());
for (unsigned pos = 0, end; (end = pos + 2 * adpcm.chunkBytes()) <= infile.size; pos = end) {
infile.get(data, pos, end - pos);
process(adpcm, data, outfile);
}
}
}
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