private void ReduceBitsPerSample24Mash2(ConvertParams args, DataSubChunk toDsc)
{
var mash = new NoiseShaperMash[mFsc.numChannels];
for (int ch = 0; ch < mFsc.numChannels; ++ch)
{
mash[ch] = new NoiseShaperMash(args.newQuantizationBitrate);
}
int bytesPerFrame = mFsc.numChannels * mFsc.bitsPerSample / 8;
int numFrames = toDsc.data.Length / bytesPerFrame;
int readPos = 0;
int writePos = 0;
// 1サンプル遅延するので…。
for (int i = 0; i < numFrames + 1; ++i)
{
for (int ch = 0; ch < mFsc.numChannels; ++ch)
{
int sample = 0;
if (i < numFrames)
{
sample = mash[ch].Filter24(ReadSampleValue24(toDsc, readPos));
readPos += mFsc.bitsPerSample / 8;
}
else
{
sample = mash[ch].Filter24(0);
}
if (1 <= i)
{
WriteSampleValue24(toDsc, writePos, sample);
writePos += mFsc.bitsPerSample / 8;
}
}
}
}
private void ReduceBitsPerSample24Mash2(ConvertParams args, DataSubChunk toDsc)
{
var mash = new NoiseShaperMash[mFsc.numChannels];
for (int ch=0; ch < mFsc.numChannels; ++ch) {
mash[ch] = new NoiseShaperMash(args.newQuantizationBitrate);
}
int bytesPerFrame = mFsc.numChannels * mFsc.bitsPerSample / 8;
int numFrames = toDsc.data.Length / bytesPerFrame;
int readPos = 0;
int writePos = 0;
// 1サンプル遅延するので…。
for (int i=0; i < numFrames + 1; ++i) {
for (int ch=0; ch < mFsc.numChannels; ++ch) {
int sample = 0;
if (i < numFrames) {
sample = mash[ch].Filter24(ReadSampleValue24(toDsc, readPos));
readPos += mFsc.bitsPerSample / 8;
} else {
sample = mash[ch].Filter24(0);
}
if (1 <= i) {
WriteSampleValue24(toDsc, writePos, sample);
writePos += mFsc.bitsPerSample / 8;
}
}
}
}