internal PCMStream(WaveInfo* pWAVE, VoidPtr dataAddr)
{
_frequency = pWAVE->_sampleRate;
_numSamples = pWAVE->NumSamples;
_numChannels = pWAVE->_format._channels;
_bps = pWAVE->_format._encoding == 0 ? 8 : 16;
if (_numSamples <= 0) return;
_loopStart = (int)pWAVE->LoopSample;
_loopEnd = _numSamples;
_source = (short*)dataAddr;
_samplePos = 0;
}
public void Init(VoidPtr strmAddr, int strmLen, WaveInfo* info)
{
Info = *info;
_streamBuffer = new UnsafeBuffer(strmLen);
Memory.Move(_streamBuffer.Address, strmAddr, (uint)strmLen);
_audioSource = new DataSource(_streamBuffer.Address, _streamBuffer.Length);
if (info->_format._encoding == 2)
_stream = new ADPCMStream(info, _audioSource.Address);
else
_stream = new PCMStream(info, _audioSource.Address);
}
public ADPCMStream(WaveInfo* pWAVE, VoidPtr dataAddr)
{
_dataAddress = dataAddr;
ADPCMInfo*[] info;
int loopBlock, loopChunk;
byte* sPtr;
info = new ADPCMInfo*[_numChannels = pWAVE->_format._channels];
_currentStates = new ADPCMState[_numChannels];
_loopStates = new ADPCMState[_numChannels];
_isLooped = pWAVE->_format._looped != 0;
_sampleRate = pWAVE->_sampleRate;
_numSamples = pWAVE->NumSamples;
if (_numSamples <= 0) return;
_blockLen = (_numSamples.Align(14) / 14 * 8).Align(0x20);
_loopStartSample = (int)pWAVE->LoopSample;
_loopEndSample = _numSamples;
Init();
_blockStates = new ADPCMState[_numChannels, _numBlocks];
loopBlock = _loopStartSample / _samplesPerBlock;
loopChunk = (_loopStartSample - (loopBlock * _samplesPerBlock)) / 14;
int x = (loopBlock * _blockLen * _numChannels) + (loopChunk * 8);
int y = (_loopStartSample / 14 * 8);
sPtr = (byte*)dataAddr + x;
//Get channel info
for (int i = 0; i < _numChannels; i++)
//{
// //sPtr = (byte*)dataAddr + pWAVE->GetChannelInfo(i)->_channelDataOffset + loopStart;
info[i] = pWAVE->GetADPCMInfo(i);
// //Fill loop state
// _loopStates[i] = new ADPCMState(sPtr, info[i]->_lps, info[i]->_lyn1, info[i]->_lyn2, info[i]->Coefs);
// //Advance source pointer for next channel
// sPtr += _blockLen;
//}
//Fill block states in a linear fashion
sPtr = (byte*)dataAddr;
for (int sIndex = 0, bIndex = 0; sIndex < _numSamples; sIndex += _samplesPerBlock, bIndex++)
for (int cIndex = 0; cIndex < _numChannels; cIndex++)
{
//sPtr = (byte*)dataAddr + pWAVE->GetChannelInfo(cIndex)->_channelDataOffset;
//Get block state
ADPCMInfo* i = info[cIndex];
_blockStates[cIndex, bIndex] = new ADPCMState(sPtr, i->_ps, i->_yn1, i->_yn2, i->_lps, i->_lyn1, i->_lyn2, i->Coefs); //Use ps from data stream
//Advance address
sPtr += (bIndex == _numBlocks - 1) ? _lastBlockSize : _blockLen;
}
}
