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(a) : (b)) #endif //============================================================================= // SMACscom //============================================================================= SMACscom::SMACscom(ComponentInstance inSelf, UInt32 inFormatID) : mSelf(inSelf), mSourceComponent(NULL), mEncoder(NULL), mSourceID(0), mSourceData(NULL), mPacketFrameSize(0), mMaxPacketByteSize(0), mOutputBuffer(NULL) { // fill out the output ExtendedSoundComponentData memset(&mOutputData, 0, sizeof(ExtendedSoundComponentData)); mOutputData.desc.flags = kExtendedSoundData; mOutputData.desc.format = inFormatID; mOutputData.desc.sampleSize = 16; mOutputData.recordSize = sizeof(ExtendedSoundComponentData); mOutputData.extendedFlags = kExtendedSoundBufferSizeValid; mSourceIsExhausted = false; #if TARGET_API_MAC_OSX && TARGET_CPU_PPC mHasAltiVec = SMACSCDUtility::HasAltiVec(); #else mHasAltiVec = false; #endif } SMACscom::~SMACscom() { if(mEncoder != NULL) { CloseComponent(mEncoder); } delete[] mOutputBuffer; } void SMACscom::SetSource(SoundSource inSourceID, ComponentInstance inSourceComponent) { mSourceID = inSourceID; mSourceComponent = inSourceComponent; mSourceData = NULL; } void SMACscom::SetOutput(SoundComponentData* inRequested, SoundComponentData** outActual) { if(inRequested->format == mOutputData.desc.format) { memset(&mOutputData, 0, sizeof(ExtendedSoundComponentData)); mOutputData.desc = *inRequested; mOutputData.recordSize = sizeof(ExtendedSoundComponentData); mOutputData.extendedFlags = kExtendedSoundBufferSizeValid; } else { *outActual = reinterpret_cast(&mOutputData); throw static_cast(paramErr); } } void SMACscom::PlaySourceBuffer(SoundSource inSourceID, SoundParamBlock* inPB, SInt32 inActions) { // get rid of the input data mSourceData = NULL; mOutputData.desc.sampleCount = 0; mOutputData.bufferSize = 0; mOutputData.frameCount = 0; mOutputData.commonFrameSize = 0; ComponentResult theError = SoundComponentPlaySourceBuffer(mSourceComponent, inSourceID, inPB, inActions); ThrowIfError(theError, (CAException)theError, "SMACscom::PlaySourceBuffer: got an error from SoundComponentPlaySourceBuffer"); } void SMACscom::StopSource(SInt16 inNumberSources, SoundSource* inSources) { // get rid of the input data mSourceData = NULL; mOutputData.desc.sampleCount = 0; mOutputData.bufferSize = 0; mOutputData.frameCount = 0; mOutputData.commonFrameSize = 0; // reset the encoder if(mEncoder != NULL) { AudioCodecReset(mEncoder); } ComponentResult theError = SoundComponentStopSource(mSourceComponent, inNumberSources, inSources); ThrowIfError(theError, (CAException)theError, "SMACscom::StopSource: got an error from SoundComponentStopSource"); } void SMACscom::GetInfo(SoundSource inSourceID, OSType inSelector, void* outData) { switch(inSelector) { case siCompressionFactor: GetCompressionInfo(*static_cast(outData)); break; case siCompressionParams: GetCompressionParams(outData); break; default: ThrowIf(mSourceComponent == NULL, siUnknownInfoType, "SMACscom::GetInfo: no source to pass request to") ComponentResult theError = SoundComponentGetInfo(mSourceComponent, inSourceID, inSelector, outData); ThrowIfError(theError, (CAException)theError, "SMACscom::GetInfo: got an error from SoundComponentGetInfo"); break; }; } void SMACscom::SetInfo(SoundSource inSourceID, OSType inSelector, void* inData) { switch(inSelector) { case siCompressionParams: { // process the the new params and produce an initialized // AudioCodec instance ComponentInstance theEncoder = SetCompressionParams(inData); ThrowIf(theEncoder == NULL, badFormat, "SMACscom::SetInfo: siCompressionParams didn't generate an encoder"); // get rid of the input data mSourceData = NULL; mOutputData.desc.sampleCount = 0; mOutputData.bufferSize = 0; mOutputData.frameCount = 0; mOutputData.commonFrameSize = 0; // close the old encoder if necessary if((mEncoder != NULL) && (theEncoder != mEncoder)) { CloseComponent(mEncoder); } // use the new one mEncoder = theEncoder; // get the number of frames in 1 packet of data UInt32 theSize = sizeof(UInt32); ComponentResult theError = AudioCodecGetProperty(mEncoder, kAudioCodecPropertyPacketFrameSize, &theSize, &mPacketFrameSize); ThrowIfError(theError, (CAException)theError, "SMACscom::SetInfo: siCompressionParams got an error from AudioCodecGetProperty while getting the packet frame size"); // get the maximum number of bytes in 1 packet of data theSize = sizeof(UInt32); theError = AudioCodecGetProperty(mEncoder, kAudioCodecPropertyMaximumPacketByteSize, &theSize, &mMaxPacketByteSize); ThrowIfError(theError, (CAException)theError, "SMACscom::SetInfo: siCompressionParams got an error from AudioCodecGetProperty while getting the maximum packet byte size"); // toss the old output buffer delete[] mOutputBuffer; // allocate enough space for 1 packet of data, since that's // that's all this component will produce per call to GetSourceData mOutputBuffer = new Byte[mMaxPacketByteSize]; } break; case siSourceIsExhausted: // in this case it seems to be passed by value -- ugh! mSourceIsExhausted = (Boolean)((UInt32)inData); // Now pass this on, so no break! default: ThrowIf(mSourceComponent == NULL, siUnknownInfoType, "SMACscom::SetInfo: no source to pass request to") ComponentResult theError = SoundComponentSetInfo(mSourceComponent, inSourceID, inSelector, inData); ThrowIfError(theError, (CAException)theError, "SMACscom::SetInfo: got an error from SoundComponentSetInfo"); break; }; } void SMACscom::GetSourceData(SoundComponentData** outData) { ComponentResult theError = 0; UInt32 theNumberOutputPackets = 0; UInt32 theEncoderStatus = 0; UInt32 theActualOutputDataByteSize = 0; UInt32 maxPacketSize = 0; #if !TARGET_MAC_OS || !IS_COMPILER_WORKING float * tempFloatPtr; unsigned long tempULong = 0; float tempFloat; #endif *outData = NULL; // make sure we have some source data to start with if(SMACSCDUtility::NeedMoreSourceData(mSourceData)) { theError = SoundComponentGetSourceData(mSourceComponent, &mSourceData); ThrowIfError(theError, (CAException)theError, "SMACscom::GetSourceData: got an error from SoundComponentGetSourceData"); } // spin until we produce a packet of data or we run completely out of source data UInt32 theFramesProduced = 0; UInt32 theOutputDataByteSize = 0; while(SMACSCDUtility::HasData(mSourceData) && (theFramesProduced < mPacketFrameSize)) { // stuff as much input data into the encoder as we can UInt32 theInputDataByteSize = SMACSCDUtility::GetDataByteSize(mSourceData); UInt32 theNumberOfPackets = 0; maxPacketSize = min(kMaxInputSamples, theInputDataByteSize/sizeof(SInt16)); #if TARGET_MAC_OS && IS_COMPILER_WORKING NativeInt16ToFloat32( mHasAltiVec, ((short *)(mSourceData->buffer)), mFloatBuffer, maxPacketSize, 16); #else for (UInt32 i = 0; i < maxPacketSize; i++) { tempFloat = (float)(((short *)(mSourceData->buffer))[i]); tempFloatPtr = &tempFloat; if (tempFloat != 0.0 && tempFloat != -0.0) { tempULong = *((unsigned long *)tempFloatPtr); tempULong -= 0x07800000; tempFloatPtr = (float *)(&tempULong); } mFloatBuffer[i] = *tempFloatPtr; } #endif theInputDataByteSize = maxPacketSize * 4; // this is all we have converted //theInputDataByteSize *= 2; theError = AudioCodecAppendInputData(mEncoder, mFloatBuffer, &theInputDataByteSize, &theNumberOfPackets, NULL); ThrowIfError(theError, (CAException)theError, "SMACscom::GetSourceData: got an error from AudioCodecAppendInputData"); // update the source data with the amount of data consumed SMACSCDUtility::ConsumedData(mSourceData, theInputDataByteSize >> 1); // see if we can get a packet of output data theActualOutputDataByteSize = mMaxPacketByteSize; theNumberOutputPackets = 1; theEncoderStatus = kAudioCodecProduceOutputPacketFailure; theError = AudioCodecProduceOutputPackets(mEncoder, mOutputBuffer, &theActualOutputDataByteSize, &theNumberOutputPackets, NULL, &theEncoderStatus); ThrowIfError(theError, (CAException)theError, "SMACscom::GetSourceData: got an error from AudioCodecProduceOutputPackets"); if(theNumberOutputPackets == 1) { // we produced a full packet of frames, so we're done theFramesProduced = mPacketFrameSize; theOutputDataByteSize += theActualOutputDataByteSize; } else { // we didn't get the data, so get more input data if we have to if(SMACSCDUtility::NeedMoreSourceData(mSourceData)) { theError = SoundComponentGetSourceData(mSourceComponent, &mSourceData); ThrowIfError(theError, (CAException)theError, "SMACscom::GetSourceData: got an error from SoundComponentGetSourceData"); } } } if(theFramesProduced < mPacketFrameSize) { // Tell the encoder to pad with 0s -- this will change once the API is added if (mSourceIsExhausted) { UInt32 theInputDataByteSize = SMACSCDUtility::GetDataByteSize(mSourceData); // better be 0 UInt32 theNumberOfPackets = 0; maxPacketSize = min(kMaxInputSamples, theInputDataByteSize/sizeof(SInt16)); #if TARGET_MAC_OS && IS_COMPILER_WORKING NativeInt16ToFloat32( mHasAltiVec, ((short *)(mSourceData->buffer)), mFloatBuffer, maxPacketSize, 16); #else for (UInt32 i = 0; i < maxPacketSize; i++) { tempFloat = (float)(((short *)(mSourceData->buffer))[i]); tempFloatPtr = &tempFloat; if (tempFloat != 0.0 && tempFloat != -0.0) { tempULong = *((unsigned long *)tempFloatPtr); tempULong -= 0x07800000; tempFloatPtr = (float *)(&tempULong); } mFloatBuffer[i] = *tempFloatPtr; } #endif theInputDataByteSize = maxPacketSize * 4; // this is all we have converted //theInputDataByteSize *= 2; theError = AudioCodecAppendInputData(mEncoder, mFloatBuffer, &theInputDataByteSize, &theNumberOfPackets, NULL); ThrowIfError(theError, (CAException)theError, "SMACscom::GetSourceData: got an error from AudioCodecAppendInputData"); } // we ran out of input data, but we still haven't produced enough output data // so we have to try one last time to pull on the encoder in case it has // some left overs that it can give us theActualOutputDataByteSize = mMaxPacketByteSize; theNumberOutputPackets = 1; theEncoderStatus = kAudioCodecProduceOutputPacketFailure; theError = AudioCodecProduceOutputPackets(mEncoder, mOutputBuffer, &theActualOutputDataByteSize, &theNumberOutputPackets, NULL, &theEncoderStatus); ThrowIfError(theError, (CAException)theError, "SMACscom::GetSourceData: got an error from AudioCodecProduceOutputPackets"); if(theNumberOutputPackets == 1) { // we produced a full packet of frames, so we're done theFramesProduced = mPacketFrameSize; theOutputDataByteSize += theActualOutputDataByteSize; } } // set up the return values if any data was produced if(theFramesProduced > 0) { mOutputData.desc.buffer = mOutputBuffer; mOutputData.desc.sampleCount = theFramesProduced; mOutputData.bufferSize = theOutputDataByteSize; mOutputData.frameCount = 1; mOutputData.commonFrameSize = theOutputDataByteSize; mOutputData.desc.numChannels = mSourceData->numChannels; *outData = reinterpret_cast(&mOutputData); } }