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include/cinder/audio/SourceFileWindowsMedia.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 
00023 #pragma once
00024 
00025 #include "cinder/Cinder.h"
00026 #include "cinder/audio/Io.h"
00027 #include "cinder/Buffer.h"
00028 
00029 #include <Wmsdk.h>
00030 #include <windows.h>
00031 
00032 
00033 namespace cinder { namespace audio {
00034 
00035 typedef shared_ptr<class SourceFileWindowsMedia>    SourceFileWindowsMediaRef;
00036 typedef shared_ptr<class LoaderSourceFileWindowsMedia>  LoaderSourceFileWindowsMediaRef;
00037 
00038 class LoaderSourceFileWindowsMedia : public Loader {
00039   public:
00040     static LoaderSourceFileWindowsMediaRef  createRef( SourceFileWindowsMedia *source, Target *target );    
00041     ~LoaderSourceFileWindowsMedia();
00042     
00043     uint32_t getOptimalBufferSize() const { return mMaxBufferSize; }
00044     void loadData( uint32_t *ioSampleCount, BufferList *ioData );
00045 
00046     uint64_t getSampleOffset() const;
00047     void setSampleOffset( uint64_t anOffset );
00048     
00049   protected:
00050     LoaderSourceFileWindowsMedia( SourceFileWindowsMedia * source, Target * target );
00051 
00052     uint64_t timeAtSample( uint64_t aSample ) const;
00053     uint64_t sampleAtTime( uint64_t aTime ) const;
00054 
00055     SourceFileWindowsMedia          * mSource;
00056     WAVEFORMATEX                    mOutputFormat;
00057 
00058     uint32_t                        mStreamSize;
00059     shared_ptr<IWMSyncReader>       mReader;
00060     shared_ptr<IWMHeaderInfo>       mHeaderInfo;
00061 
00062     uint32_t                        mMaxBufferSize;
00063     uint64_t                        mSampleOffset;
00064     uint32_t                        mSrcBlockAlign;
00065     uint32_t                        mSrcSampleRate;
00066     uint16_t                        mSrcChannelCount;
00067     uint32_t                        mSrcBitsPerSample;
00068 };
00069 
00070 
00071 class SourceFileWindowsMedia : public Source {
00072   public:
00073     static SourceRef                    createRef( DataSourceRef dataSourceRef ) { return createFileRef( dataSourceRef ); }
00074     static SourceFileWindowsMediaRef    createFileRef( DataSourceRef dataSourceRef );
00075     ~SourceFileWindowsMedia();
00076 
00077     virtual LoaderRef getLoader( Target *target ) { return LoaderSourceFileWindowsMedia::createRef( this, target ); }
00078   
00079     uint32_t getLength() const { return mBuffer.getDataSize(); };
00080     double getDuration() const { /*TODO*/ return 0.0;  }
00081 
00082     static void     registerSelf();
00083   protected:
00084     SourceFileWindowsMedia( DataSourceRef dataSourceRef );
00085 
00086     cinder::Buffer mBuffer;
00087     shared_ptr<void> mMemHandle;
00088 
00089     friend LoaderSourceFileWindowsMedia;
00090 };
00091 
00092 REGISTER_AUDIOIO( SourceFileWindowsMedia )
00093 
00094 class SourceFileWindowsMediaExceptionUnsupportedData : public IoException {
00095 };
00096 
00097 }} //namespace