93 lines
2.4 KiB
C++
93 lines
2.4 KiB
C++
//This file is part of Photon (http://photon.sourceforge.net)
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//Copyright (C) 2004-2005 James Turk
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//
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// Author:
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// James Turk (jpt2433@rit.edu)
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//
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// Version:
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// $Id: SampleResourceManager.hpp,v 1.3 2005/08/10 05:36:31 cozman Exp $
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#ifdef PHOTON_USE_OPENAL
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#ifndef PHOTON_AUDIO_SAMPLERESOURCEMANAGER_HPP
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#define PHOTON_AUDIO_SAMPLERESOURCEMANAGER_HPP
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#include "ResourceManager.hpp"
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#include "audio/Source.hpp"
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namespace photon
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{
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namespace audio
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{
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// All that a Sample is is a bufferID, extremely simple resource management
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class SampleResource : public Resource
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{
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public:
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uint bufferID;
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};
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class SampleResourceManager : public ResourceManager<SampleResource>
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{
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public:
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void getAudioData(const std::string& name, uint& bufferID);
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private:
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virtual void loadResourceData(SampleResource &res,
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const ResourceDescriptor& path);
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virtual void freeResourceData(SampleResource &res);
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void loadWAVMemory(const ubyte* memory, ALenum& format, ubyte*& data,
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uint& size, uint& freq);
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void freeWAVMemory(ubyte*& data);
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};
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// Allow users to simply call a Sample a Sample
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typedef Source<SampleResourceManager> Sample;
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// Structure defined to specification of WAV file
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// Based on http://ccrma.stanford.edu/CCRMA/Courses/422/projects/WaveFormat/
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struct WaveHeader
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{
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// Big Endian
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// static const uint RIFF = 0x52494646;
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// static const uint WAVE = 0x57415645;
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// static const uint FMT = 0x666d7420;
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// static const uint DATA = 0x64617461;
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// Little Endian
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static const uint RIFF = 0x46464952;
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static const uint WAVE = 0x45564157;
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static const uint FMT = 0x20746d66;
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static const uint DATA = 0x61746164;
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struct RIFFHeader
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{
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uint chunkID; // 4 bytes
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uint chunkSize; // 4 bytes
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uint format; // 4 bytes
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} riff; // 16 bytes
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struct WaveFormat
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{
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uint chunkID; // 4 bytes
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uint size; // 4 bytes
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short format; // 2 bytes
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short numChannels; // 2 bytes
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uint sampleRate; // 4 bytes
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uint byteRate; // 4 bytes
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short blockAlign; // 2 bytes
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short bitsPerSample; // 2 bytes
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} fmt; // 24 bytes
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uint chunkID; // 4 bytes
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uint dataSize; // 4 bytes
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}; // 38 bytes
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}
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}
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#endif //PHOTON_AUDIO_SAMPLERESOURCEMANAGER_HPP
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#endif //PHOTON_USE_OPENAL
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