void MainWindow::exportWAVImpl(Sound::AudioStream *sound, Common::WriteStream &wav) {
assert(sound);
const uint16 channels = sound->getChannels();
const uint32 rate = sound->getRate();
std::deque<SoundBuffer> buffers;
uint64 length = getSoundLength(sound);
if (length != Sound::RewindableAudioStream::kInvalidLength)
buffers.resize((length / (SoundBuffer::kBufferSize / channels)) + 1);
uint32 samples = 0;
std::deque<SoundBuffer>::iterator buffer = buffers.begin();
while (!sound->endOfStream()) {
if (buffer == buffers.end()) {
buffers.push_back(SoundBuffer());
buffer = --buffers.end();
}
buffer->samples = sound->readBuffer(buffer->buffer, SoundBuffer::kBufferSize);
if (buffer->samples > 0)
samples += buffer->samples;
++buffer;
}
samples /= channels;
const uint32 dataSize = samples * channels * 2;
const uint32 byteRate = rate * channels * 2;
const uint16 blockAlign = channels * 2;
wav.writeUint32BE(MKTAG('R', 'I', 'F', 'F'));
wav.writeUint32LE(36 + dataSize);
wav.writeUint32BE(MKTAG('W', 'A', 'V', 'E'));
wav.writeUint32BE(MKTAG('f', 'm', 't', ' '));
wav.writeUint32LE(16);
wav.writeUint16LE(1);
wav.writeUint16LE(channels);
wav.writeUint32LE(rate);
wav.writeUint32LE(byteRate);
wav.writeUint16LE(blockAlign);
wav.writeUint16LE(16);
wav.writeUint32BE(MKTAG('d', 'a', 't', 'a'));
wav.writeUint32LE(dataSize);
for (std::deque<SoundBuffer>::const_iterator b = buffers.begin(); b != buffers.end(); ++b)
for (int i = 0; i < b->samples; i++)
wav.writeUint16LE(b->buffer[i]);
}
static void saveOrLoadCommonArray(Common::WriteStream &stream, A &array) {
uint count = array.size();
assert(count < 0xFFFF);
stream.writeUint16LE(count);
for (uint i = 0; i < count; ++i) {
saveOrLoad(stream, array[i]);
}
}
static void saveOrLoad(Common::WriteStream &stream, uint16 &i) {
stream.writeUint16LE(i);
}
void TwoDAFile::writeBinary(Common::WriteStream &out) const {
const size_t columnCount = _headers.size();
const size_t rowCount = _rows.size();
const size_t cellCount = columnCount * rowCount;
out.writeString("2DA V2.b\n");
// Write the column headers
for (std::vector<Common::UString>::const_iterator h = _headers.begin(); h != _headers.end(); ++h) {
out.writeString(*h);
out.writeByte('\t');
}
out.writeByte('\0');
// Write the row indices
out.writeUint32LE((uint32) rowCount);
for (size_t i = 0; i < rowCount; i++) {
out.writeString(Common::composeString(i));
out.writeByte('\t');
}
/* Deduplicate cell data strings. Binary 2DA files don't store the
* data for each cell directly: instead, each cell contains an offset
* into a data array. This way, cells with the same data only need to
* to store this data once.
*
* The original binary 2DA files in KotOR/KotOR2 make extensive use
* of that, and we should do this as well.
*
* Basically, this involves going through each cell, and looking up
* if we already saved this particular piece of data. If not, save
* it, otherwise only remember the offset. There's no need to be
* particularly smart about it, so we're just doing it the naive
* O(n^2) way.
*/
std::vector<Common::UString> data;
std::vector<size_t> offsets;
data.reserve(cellCount);
offsets.reserve(cellCount);
size_t dataSize = 0;
std::vector<size_t> cells;
cells.reserve(cellCount);
for (size_t i = 0; i < rowCount; i++) {
assert(_rows[i]);
for (size_t j = 0; j < columnCount; j++) {
const Common::UString cell = _rows[i]->getString(j);
// Do we already know about this cell data string?
size_t foundCell = SIZE_MAX;
for (size_t k = 0; k < data.size(); k++) {
if (data[k] == cell) {
foundCell = k;
break;
}
}
// If not, add it to the cell data array
if (foundCell == SIZE_MAX) {
foundCell = data.size();
data.push_back(cell);
offsets.push_back(dataSize);
dataSize += data.back().size() + 1;
if (dataSize > 65535)
throw Common::Exception("TwoDAFile::writeBinary(): Cell data size overflow");
}
// Remember the offset to the cell data array
cells.push_back(offsets[foundCell]);
}
}
// Write cell data offsets
for (std::vector<size_t>::const_iterator c = cells.begin(); c != cells.end(); ++c)
out.writeUint16LE((uint16) *c);
// Size of the all cell data strings
out.writeUint16LE((uint16) dataSize);
// Write cell data strings
for (std::vector<Common::UString>::const_iterator d = data.begin(); d != data.end(); ++d) {
out.writeString(*d);
out.writeByte('\0');
}
}