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/audio/Output.h" 00026 #include <CoreAudio/CoreAudioTypes.h> 00027 #include <AudioUnit/AudioUnit.h> 00028 #include <AudioToolbox/AUGraph.h> 00029 #include <boost/thread/mutex.hpp> 00030 #include <stack> 00031 00032 namespace cinder { namespace audio { 00033 00034 class OutputImplAudioUnit; 00035 00036 class TargetOutputImplAudioUnit : public Target { 00037 public: 00038 static std::shared_ptr<TargetOutputImplAudioUnit> createRef( const OutputImplAudioUnit *aOutput ){ return std::shared_ptr<TargetOutputImplAudioUnit>( new TargetOutputImplAudioUnit( aOutput ) ); }; 00039 ~TargetOutputImplAudioUnit() {} 00040 private: 00041 TargetOutputImplAudioUnit( const OutputImplAudioUnit *aOutput ); 00042 00043 //uint64_t mPacketOffset; 00044 //AudioStreamPacketDescription * mCurrentPacketDescriptions; 00045 }; 00046 00047 class OutputImplAudioUnit : public OutputImpl { 00048 public: 00049 OutputImplAudioUnit(); 00050 ~OutputImplAudioUnit(); 00051 00052 TrackRef addTrack( SourceRef source, bool autoplay ); 00053 void removeTrack( TrackId trackId ); 00054 00055 void setVolume( float aVolume ); 00056 float getVolume() const; 00057 00058 //TargetRef getTarget(); 00059 protected: 00060 TrackId availableTrackId() { 00061 if( mAvailableBuses.size() < 1 ) return -1; 00062 TrackId bus = mAvailableBuses.top(); 00063 mAvailableBuses.pop(); return bus; 00064 } 00065 private: 00066 00067 static const uint32_t sDefaultNumberBuses; 00068 std::stack<TrackId> mAvailableBuses; 00069 uint32_t mNumberBuses; 00070 #if defined(CINDER_MAC) 00071 AudioDeviceID mOutputDeviceId; 00072 #endif 00073 AUGraph mGraph; 00074 AUNode mMixerNode; 00075 AUNode mOutputNode; 00076 AudioUnit mOutputUnit; 00077 AudioUnit mMixerUnit; 00078 AudioStreamBasicDescription * mPlayerDescription; 00079 00080 class Track : public cinder::audio::Track 00081 { 00082 public: 00083 Track( SourceRef source, OutputImplAudioUnit * output ); 00084 ~Track(); 00085 void play(); 00086 void stop(); 00087 bool isPlaying() const { return mIsPlaying; } 00088 00089 TrackId getTrackId() const { return mInputBus; } 00090 00091 void setVolume( float aVolume ); 00092 float getVolume() const; 00093 00094 double getTime() const { return ( mLoader->getSampleOffset() / (double)mSource->getSampleRate() ); } 00095 void setTime( double aTime ); 00096 00097 bool isLooping() const { return mIsLooping; } 00098 void setLooping( bool isLooping ) { mIsLooping = isLooping; } 00099 00100 void enablePcmBuffering( bool isBuffering ) { mIsPcmBuffering = isBuffering; } 00101 bool isPcmBuffering() { return mIsPcmBuffering; } 00102 00103 PcmBuffer32fRef getPcmBuffer(); 00104 private: 00105 static OSStatus renderCallback( void * audioLoader, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData ); 00106 static OSStatus renderNotifyCallback( void * audioTrack, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData ); 00107 00108 void createPcmBuffer(); 00109 00110 SourceRef mSource; 00111 std::shared_ptr<TargetOutputImplAudioUnit> mTarget; 00112 OutputImplAudioUnit * mOutput; 00113 TrackId mInputBus; 00114 LoaderRef mLoader; 00115 bool mIsPlaying; 00116 bool mIsLooping; 00117 bool mIsPcmBuffering; 00118 00119 PcmBuffer32fRef mLoadingPcmBuffer; 00120 PcmBuffer32fRef mLoadedPcmBuffer; 00121 boost::mutex mPcmBufferMutex; 00122 }; 00123 00124 std::map<TrackId,std::shared_ptr<OutputImplAudioUnit::Track> > mTracks; 00125 00126 friend class TargetOutputImplAudioUnit; 00127 }; 00128 00129 }} //namespace