# Cinder

- Main Page
- Related Pages
- Namespaces
- Classes
- Files

- File List
- File Members

# include/cinder/audio/SourceFile.h

Go to the documentation of this file.

    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