CASpeexDecoder::CASpeexDecoder(Boolean inSkipFormatsInitialization /* = false */) :
mCookie(NULL), mCookieSize(0), mCompressionInitialized(false),
mOutBuffer(NULL), mOutBufferSize(0), mOutBufferUsedSize(0), mOutBufferStart(0),
mSpeexFPList(),
mNumFrames(0),
mSpeexDecoderState(NULL)
{
mSpeexStereoState.balance = 1.0;
mSpeexStereoState.e_ratio = 0.5;
mSpeexStereoState.smooth_left = 1.0;
mSpeexStereoState.smooth_right = 1.0;
if (inSkipFormatsInitialization)
return;
CAStreamBasicDescription theInputFormat(kAudioStreamAnyRate, kAudioFormatXiphSpeex,
kSpeexBytesPerPacket, kSpeexFramesPerPacket,
kSpeexBytesPerFrame, kSpeexChannelsPerFrame,
kSpeexBitsPerChannel, kSpeexFormatFlags);
AddInputFormat(theInputFormat);
mInputFormat.mSampleRate = 44100;
mInputFormat.mFormatID = kAudioFormatXiphSpeex;
mInputFormat.mFormatFlags = kSpeexFormatFlags;
mInputFormat.mBytesPerPacket = kSpeexBytesPerPacket;
mInputFormat.mFramesPerPacket = kSpeexFramesPerPacket;
mInputFormat.mBytesPerFrame = kSpeexBytesPerFrame;
mInputFormat.mChannelsPerFrame = 2;
mInputFormat.mBitsPerChannel = 16;
CAStreamBasicDescription theOutputFormat1(kAudioStreamAnyRate, kAudioFormatLinearPCM, 0, 1, 0, 0, 16,
kAudioFormatFlagsNativeEndian |
kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked);
AddOutputFormat(theOutputFormat1);
CAStreamBasicDescription theOutputFormat2(kAudioStreamAnyRate, kAudioFormatLinearPCM, 0, 1, 0, 0, 32,
kAudioFormatFlagsNativeFloatPacked);
AddOutputFormat(theOutputFormat2);
mOutputFormat.mSampleRate = 44100;
mOutputFormat.mFormatID = kAudioFormatLinearPCM;
mOutputFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked;
mOutputFormat.mBytesPerPacket = 8;
mOutputFormat.mFramesPerPacket = 1;
mOutputFormat.mBytesPerFrame = 8;
mOutputFormat.mChannelsPerFrame = 2;
mOutputFormat.mBitsPerChannel = 32;
}
CAOggFLACDecoder::CAOggFLACDecoder() :
CAFLACDecoder(true),
mFramesBufferedList(),
complete_pages(0)
{
CAStreamBasicDescription theInputFormat(kAudioStreamAnyRate, kAudioFormatXiphOggFramedFLAC,
kFLACBytesPerPacket, kFLACFramesPerPacket,
kFLACBytesPerFrame, kFLACChannelsPerFrame,
kFLACBitsPerChannel, kFLACFormatFlags);
AddInputFormat(theInputFormat);
mInputFormat.mSampleRate = 44100;
mInputFormat.mFormatID = kAudioFormatXiphOggFramedFLAC;
mInputFormat.mFormatFlags = kFLACFormatFlags;
mInputFormat.mBytesPerPacket = kFLACBytesPerPacket;
mInputFormat.mFramesPerPacket = kFLACFramesPerPacket;
mInputFormat.mBytesPerFrame = kFLACBytesPerFrame;
mInputFormat.mChannelsPerFrame = 2;
mInputFormat.mBitsPerChannel = kFLACBitsPerChannel;
CAStreamBasicDescription theOutputFormat1(kAudioStreamAnyRate, kAudioFormatLinearPCM, 0, 1, 0, 0, 16,
kAudioFormatFlagsNativeEndian |
kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked);
AddOutputFormat(theOutputFormat1);
CAStreamBasicDescription theOutputFormat2(kAudioStreamAnyRate, kAudioFormatLinearPCM, 0, 1, 0, 0, 32,
kAudioFormatFlagsNativeFloatPacked);
AddOutputFormat(theOutputFormat2);
mOutputFormat.mSampleRate = 44100;
mOutputFormat.mFormatID = kAudioFormatLinearPCM;
mOutputFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked;
mOutputFormat.mBytesPerPacket = 8;
mOutputFormat.mFramesPerPacket = 1;
mOutputFormat.mBytesPerFrame = 8;
mOutputFormat.mChannelsPerFrame = 2;
mOutputFormat.mBitsPerChannel = 32;
}
ACFLACEncoder::ACFLACEncoder(OSType theSubType)
:
ACFLACCodec(kInputBufferPackets * kFramesPerPacket * sizeof(SInt16), theSubType)
{
// This encoder only accepts (16- or 24-bit) native endian signed integers as it's input,
// but can handle any sample rate and any number of channels
CAStreamBasicDescription theInputFormat1(kAudioStreamAnyRate, kAudioFormatLinearPCM, 0, 1, 0, 0, 16, kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked);
AddInputFormat(theInputFormat1);
CAStreamBasicDescription theInputFormat2(kAudioStreamAnyRate, kAudioFormatLinearPCM, 0, 1, 0, 0, 24, kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked);
AddInputFormat(theInputFormat2);
// These are some additional formats that FLAC can support
//CAStreamBasicDescription theInputFormat3(kAudioStreamAnyRate, kAudioFormatLinearPCM, 0, 1, 0, 0, 32, kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked);
//AddInputFormat(theInputFormat3);
//CAStreamBasicDescription theInputFormat4(kAudioStreamAnyRate, kAudioFormatLinearPCM, 0, 1, 0, 0, 20, kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsAlignedHigh);
//AddInputFormat(theInputFormat4);
// set our intial input format to stereo 32 bit native endian signed integer at a 44100 sample rate
mInputFormat.mSampleRate = 44100;
mInputFormat.mFormatID = kAudioFormatLinearPCM;
mInputFormat.mFormatFlags = kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
mInputFormat.mBytesPerPacket = 4;
mInputFormat.mFramesPerPacket = 1;
mInputFormat.mBytesPerFrame = 4;
mInputFormat.mChannelsPerFrame = 2;
mInputFormat.mBitsPerChannel = 16;
// This encoder only puts out a FLAC stream
CAStreamBasicDescription theOutputFormat1(kAudioStreamAnyRate, kAudioFormatFLAC, 0, kFramesPerPacket, 0, 0, 0, 0);
AddOutputFormat(theOutputFormat1);
// set our intial output format to stereo FLAC at a 44100 sample rate -- note however the 16 bit bit depth
mOutputFormat.mSampleRate = 44100;
mOutputFormat.mFormatFlags = kFLACFormatFlag_16BitSourceData;
mOutputFormat.mBytesPerPacket = 0;
mOutputFormat.mFramesPerPacket = kFramesPerPacket;
mOutputFormat.mFormatID = kAudioFormatFLAC;
mOutputFormat.mBytesPerFrame = 0;
mOutputFormat.mChannelsPerFrame = 2;
mOutputFormat.mBitsPerChannel = 0;
mSupportedChannelTotals[0] = 1;
mSupportedChannelTotals[1] = 2;
mSupportedChannelTotals[2] = 3;
mSupportedChannelTotals[3] = 4;
mSupportedChannelTotals[4] = 5;
mSupportedChannelTotals[5] = 6;
mSupportedChannelTotals[6] = 7;
mSupportedChannelTotals[7] = 8;
mPacketInInputBuffer = false;
mFormat = 0;
mTotalBytesGenerated = 0;
mQuality = 0; // Compression Quality
mInputBufferBytesUsed = 0;
mFlushPacket = false;
mFinished = false;
mTrailingFrames = 0;
mBitDepth = 16;
mEncoder = FLAC__stream_encoder_new();
mEncoderState = FLAC__stream_encoder_get_state(mEncoder);
}