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 <AudioToolbox/AudioFile.h> 00030 #include <CoreAudio/CoreAudioTypes.h> 00031 #include <AudioToolbox/AudioConverter.h> 00032 00033 00034 namespace cinder { namespace audio { 00035 00036 typedef shared_ptr<class SourceFile> SourceFileRef; 00037 typedef shared_ptr<class LoaderSourceFile> LoaderSourceFileRef; 00038 00039 class LoaderSourceFile : public Loader { 00040 public: 00041 static LoaderSourceFileRef createRef( SourceFile *source, Target *target ); 00042 00043 ~LoaderSourceFile(); 00044 00045 uint64_t getSampleOffset() const; 00046 void setSampleOffset( uint64_t anOffset ); 00047 void loadData( uint32_t *ioSampleCount, BufferList *ioData ); 00048 private: 00049 LoaderSourceFile( SourceFile *source, Target *target ); 00050 void cleanupPacketDescriptions(); 00051 void cleanupConverterBuffer(); 00052 00053 static OSStatus dataInputCallback( AudioConverterRef inAudioConverter, UInt32 *ioNumberDataPackets, AudioBufferList *ioData, AudioStreamPacketDescription **outDataPacketDescriptions, void *audioLoader ); 00054 00055 SourceFile * mSource; 00056 AudioConverterRef mConverter; 00057 BufferList mConverterBuffer; 00058 AudioStreamPacketDescription * mCurrentPacketDescriptions; 00059 uint64_t mPacketOffset; 00060 00061 }; 00062 00063 class SourceFile : public Source { 00064 public: 00065 static SourceRef createRef( DataSourceRef dataSourceRef ) { return createFileRef( dataSourceRef ); } 00066 static SourceFileRef createFileRef( DataSourceRef dataSourceRef ); 00067 ~SourceFile(); 00068 00069 virtual LoaderRef getLoader( Target *target ) { return LoaderSourceFile::createRef( this, target ); } 00070 00071 double getDuration() const { return mDuration; }; 00072 00073 static void registerSelf(); 00074 protected: 00075 SourceFile( DataSourceRef dataSourceRef ); 00076 00077 uint64_t packetAtTime( double aTime ) const; 00078 double timeAtPacket( uint64_t aPacket ) const; 00079 00080 uint64_t packetAtSample( uint64_t aSample ) const; 00081 uint64_t sampleAtPacket( uint64_t aPacket ) const; 00082 00083 00084 AudioFileID mFileRef; 00085 00086 uint64_t mPacketCount; 00087 uint64_t mByteCount; 00088 double mDuration; 00089 uint32_t mMaxPacketSize; 00090 00091 friend class LoaderSourceFile; 00092 }; 00093 00094 REGISTER_AUDIOIO( SourceFile ) 00095 00096 }} // namespace 00097