RewindableAudioStream *XACTWaveBank_ASCII::getWave(size_t index) const {
if (index >= _waves.size())
throw Common::Exception("XACTWaveBank_ASCII::getWave(): Index out of range (%s >= %s)",
Common::composeString(index).c_str(),
Common::composeString(_waves.size()).c_str());
const Wave &wave = _waves[index];
std::unique_ptr<Common::SeekableReadStream> dataStream(ResMan.getResource(wave.name, Aurora::kFileTypeOGG));
if (!dataStream)
throw Common::Exception("XACTWaveBank_ASCII::getWave(): No such resource \"%s\"", wave.name.c_str());
#ifdef ENABLE_VORBIS
return makeVorbisStream(dataStream.release(), true);
#else
throw Common::Exception("XACTWaveBank_ASCII::getWave(): Vorbis decoding disabled when building without libvorbis");
#endif
}
AudioStream *SoundManager::makeAudioStream(Common::SeekableReadStream *stream) {
bool isMP3 = false;
uint32 tag = stream->readUint32BE();
if (tag == 0xfff360c4) {
// Modified WAVE file (used in streamsounds folder, at least in KotOR 1/2)
stream = new Common::SeekableSubReadStream(stream, 0x1D6, stream->size(), true);
} else if (tag == MKTAG('R', 'I', 'F', 'F')) {
stream->seek(12);
tag = stream->readUint32BE();
if (tag != MKTAG('f', 'm', 't', ' '))
throw Common::Exception("Broken WAVE file");
// Skip fmt chunk
stream->skip(stream->readUint32LE());
tag = stream->readUint32BE();
while ((tag == MKTAG('f', 'a', 'c', 't')) || (tag == MKTAG('P', 'A', 'D', ' ')) ||
(tag == MKTAG('c', 'u', 'e', ' ')) || (tag == MKTAG('L', 'I', 'S', 'T')) ||
(tag == MKTAG('s', 'm', 'p', 'l'))) {
// Skip useless chunks
stream->skip(stream->readUint32LE());
tag = stream->readUint32BE();
}
if (tag != MKTAG('d', 'a', 't', 'a'))
throw Common::Exception("Found invalid tag in WAVE file: %x", tag);
uint32 dataSize = stream->readUint32LE();
if (dataSize == 0) {
isMP3 = true;
stream = new Common::SeekableSubReadStream(stream, stream->pos(), stream->size(), true);
} else
// Just a regular WAVE
stream->seek(0);
} else if ((tag == MKTAG('B', 'M', 'U', ' ')) &&
(stream->readUint32BE() == MKTAG('V', '1', '.', '0'))) {
// BMU files: MP3 with extra header
isMP3 = true;
stream = new Common::SeekableSubReadStream(stream, stream->pos(), stream->size(), true);
} else if (tag == MKTAG('O', 'g', 'g', 'S')) {
stream->seek(0);
return makeVorbisStream(stream, true);
} else if (tag == 0x3026B275) {
// ASF (most probably with WMAv2)
stream->seek(0);
return makeASFStream(stream, true);
} else if (((tag & 0xFFFFFF00) | 0x20) == MKTAG('I', 'D', '3', ' ')) {
// ID3v2 tag found => Should be MP3.
stream->seek(0);
isMP3 = true;
} else if ((tag & 0xFFFA0000) == 0xFFFA0000) {
// MPEG sync + MPEG1 layer 3 bits found => Should be MP3.
// NOTE: To decrease the chances of false positives, we could look at more than just the first frame.
stream->seek(0);
isMP3 = true;
} else
throw Common::Exception("Unknown sound format");
if (isMP3)
return makeMP3Stream(stream, true);
return makeWAVStream(stream, true);
}
