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include/cinder/audio/SourceFileWav.h

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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 #pragma once
00023 
00024 #include "cinder/Cinder.h"
00025 #include "cinder/audio/Io.h"
00026 
00027 namespace cinder { namespace audio {
00028 
00029 typedef shared_ptr<class SourceFileWav> SourceFileWavRef;
00030 typedef shared_ptr<class LoaderSourceFileWav>   LoaderSourceFileWavRef;
00031 
00032 class LoaderSourceFileWav : public Loader {
00033  public:
00034     static LoaderSourceFileWavRef   createRef( SourceFileWav *source, Target *target ); 
00035     ~LoaderSourceFileWav();
00036 
00037     uint32_t getOptimalBufferSize() const { return 0; }
00038     void loadData( uint32_t *ioSampleCount, BufferList *ioData );
00039 
00040     uint64_t getSampleOffset() const;
00041     void setSampleOffset( uint64_t anOffset );
00042 protected:
00043     LoaderSourceFileWav( SourceFileWav * source, Target * target );
00044 
00045     SourceFileWav   * mSource;
00046     IStreamRef      mStream;
00047     uint64_t        mSampleOffset;
00048 };
00049 
00050 class SourceFileWav : public Source {
00051  public:
00052     static SourceRef                    createRef( DataSourceRef dataSourceRef ) { return createFileWavRef( dataSourceRef ); }
00053     static SourceFileWavRef             createFileWavRef( DataSourceRef dataSourceRef );
00054     ~SourceFileWav();
00055 
00056     LoaderRef getLoader( Target *target ) { return LoaderSourceFileWav::createRef( this, target ); }
00057 
00058     uint32_t getLength() const { return mDataLength; };
00059     double getDuration() const { /*TODO*/ return 0.0;  }
00060 
00061     static void     registerSelf();
00062  private:
00063     SourceFileWav( DataSourceRef dataSourceRef );
00064     void readFormatChunk( IStreamRef stream );
00065     IStreamRef createStream();
00066     
00067     DataSourceRef   mDataSource;
00068     uint32_t        mDataLength;
00069     uint32_t        mDataStart;
00070     uint64_t        mSampleCount;
00071 
00072     uint16_t        mAudioFormat;
00073     uint32_t        mByteRate;
00074 
00075     friend LoaderSourceFileWav;
00076 };
00077 
00078 REGISTER_AUDIOIO( SourceFileWav )
00079 
00080 }} //namespace