glest-source/source/shared_lib/include/sound/sound_file_loader.h

// ==============================================================
//	This file is part of Glest Shared Library (www.glest.org)
//
//	Copyright (C) 2001-2008 Martiño Figueroa
//
//	You can redistribute this code and/or modify it under 
//	the terms of the GNU General Public License as published 
//	by the Free Software Foundation; either version 2 of the 
//	License, or (at your option) any later version
// ==============================================================

#ifndef _SHARED_SOUND_SOUNDFILELOADER_H_
#define _SHARED_SOUND_SOUNDFILELOADER_H_

#include <string>
#include <fstream>
#include "data_types.h"
#include "factory.h"
#include "leak_dumper.h"

struct OggVorbis_File;

using std::string;
using std::ifstream;

namespace Shared {
	namespace Sound {

		using Platform::uint32;
		using Platform::int8;
		using Util::MultiFactory;

		class SoundInfo;

		// =====================================================
		//	class SoundFileLoader  
		//
		///	Interface that all SoundFileLoaders will implement
		// =====================================================

		class SoundFileLoader {
		public:
			virtual ~SoundFileLoader() {
			}

			virtual void open(const string &path, SoundInfo *soundInfo) = 0;
			virtual uint32 read(int8 *samples, uint32 size) = 0;
			virtual void close() = 0;
			virtual void restart() = 0;
			virtual string getFileName() = 0;
		};

		// =====================================================
		//	class WavSoundFileLoader  
		//
		///	Wave file loader
		// =====================================================

		class WavSoundFileLoader : public SoundFileLoader {
		private:
			static const int maxDataRetryCount = 10;
			string fileName;
		private:
			uint32 dataOffset;
			uint32 dataSize;
			uint32 bytesPerSecond;
			ifstream f;

		public:
			virtual void open(const string &path, SoundInfo *soundInfo);
			virtual uint32 read(int8 *samples, uint32 size);
			virtual void close();
			virtual void restart();
			virtual string getFileName() {
				return fileName;
			}
		};

		// =====================================================
		//	class OggSoundFileLoader 
		//
		///	OGG sound file loader, uses ogg-vorbis library
		// =====================================================

		class OggSoundFileLoader : public SoundFileLoader {
		private:
			OggVorbis_File *vf;
			FILE *f;
			string fileName;

		public:
			OggSoundFileLoader();
			virtual void open(const string &path, SoundInfo *soundInfo);
			virtual uint32 read(int8 *samples, uint32 size);
			virtual void close();
			virtual void restart();
			virtual string getFileName() {
				return fileName;
			}
		};

		// =====================================================
		//	class SoundFileLoaderFactory
		// =====================================================

		class SoundFileLoaderFactory : public MultiFactory<SoundFileLoader> {
		private:
			SoundFileLoaderFactory();
		public:
			static SoundFileLoaderFactory * getInstance();
		};

	}
}//end namespace

#endif