00001 /* 00002 Copyright (c) 2009, The Barbarian Group 00003 All rights reserved. 00004 00005 Redistribution and use in source and binary forms, with or without modification, are permitted provided that 00006 the following conditions are met: 00007 00008 * Redistributions of source code must retain the above copyright notice, this list of conditions and 00009 the following disclaimer. 00010 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and 00011 the following disclaimer in the documentation and/or other materials provided with the distribution. 00012 00013 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED 00014 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00015 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 00016 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00017 TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00018 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00019 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00020 POSSIBILITY OF SUCH DAMAGE. 00021 */ 00022 00023 #pragma once 00024 00025 #include "cinder/Cinder.h" 00026 #include "cinder/audio/Io.h" 00027 #include "cinder/audio/Buffer.h" 00028 00029 #include <CoreAudio/CoreAudioTypes.h> 00030 #include <AudioToolbox/AudioConverter.h> 00031 00032 namespace cinder { namespace audio { 00033 00034 class CocoaCaConverter { 00035 public: 00036 typedef void (*LoaderFunction)( Loader * aLoader, uint32_t *ioSampleCount, BufferList *ioData, AudioStreamPacketDescription * packetDescriptions ); 00037 00038 CocoaCaConverter( Loader *aLoader, LoaderFunction loaderFn, const AudioStreamBasicDescription& sourceDescription, const AudioStreamBasicDescription& targetDescription, uint32_t maxPacketSize ); 00039 ~CocoaCaConverter(); 00040 00041 void loadData( uint32_t *ioSampleCount, BufferList *ioData ); 00042 private: 00043 static void fillBufferListFromCaBufferList( BufferList * aBufferList, const AudioBufferList * caBufferList ); 00044 static shared_ptr<AudioBufferList> createCaBufferList( const BufferList * caBufferList ); 00045 static OSStatus dataInputCallback( AudioConverterRef inAudioConverter, UInt32 *ioNumberDataPackets, AudioBufferList *ioData, AudioStreamPacketDescription **outDataPacketDescriptions, void *audioLoader ); 00046 00047 void cleanupPacketDescriptions(); 00048 void cleanupConverterBuffer(); 00049 00050 uint32_t mMaxPacketSize; 00051 Loader * mLoader; 00052 LoaderFunction mLoaderFunction; 00053 AudioConverterRef mConverter; 00054 AudioStreamPacketDescription * mCurrentPacketDescriptions; 00055 BufferList mConverterBuffer; 00056 }; 00057 00058 }} //namespace