WiiFlow_Lite/source/music/WavDecoder.hpp

/***************************************************************************
 * Copyright (C) 2010
 * by Dimok
 *
 * This software is provided 'as-is', without any express or implied
 * warranty. In no event will the authors be held liable for any
 * damages arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any
 * purpose, including commercial applications, and to alter it and
 * redistribute it freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you
 * must not claim that you wrote the original software. If you use
 * this software in a product, an acknowledgment in the product
 * documentation would be appreciated but is not required.
 *
 * 2. Altered source versions must be plainly marked as such, and
 * must not be misrepresented as being the original software.
 *
 * 3. This notice may not be removed or altered from any source
 * distribution.
 *
 * for WiiXplorer 2010
 ***************************************************************************/
#ifndef WAVDECODER_HPP_
#define WAVDECODER_HPP_

#include "SoundDecoder.hpp"

typedef struct
{
	u32 magicRIFF;
	u32 size;
	u32 magicWAVE;
} SWaveHdr;

typedef struct
{
	u32 magicFMT;
	u32 size;
	u16 format;
	u16 channels;
	u32 freq;
	u32 avgBps;
	u16 alignment;
	u16 bps;
} SWaveFmtChunk;

typedef struct
{
	u32 magicDATA;
	u32 size;
} SWaveChunk;

typedef struct
{
	u32 magicDATA;
	u32 size;
	/* Bleh */
	u32 Manufacturer;
	u32 Product;
	u32 SamplePeriod;
	u32 MIDIUnityNote;
	u32 MIDIPitchFraction;
	u32 SMPTEFormat;
	u32 SMPTEOffset;
	u32 SampleLoops;
	u32 SamplerData;
	/* The important stuff */
	u32 Identifier;
	u32 Type;
	u32 Start;
	u32 End;
	u32 Fraction;
	u32 PlayCount;
} SWaveSmplChunk;

class WavDecoder : public SoundDecoder
{
public:
	WavDecoder(const char * filepath);
	WavDecoder(const u8 * snd, int len);
	~WavDecoder();
	int GetFormat() { return Format; };
	int GetSampleRate() { return SampleRate; };
	int Read(u8 * buffer, int buffer_size, int pos);
protected:
	void OpenFile();
	void CloseFile();
	u32 DataOffset;
	u32 DataSize;
	u32 SampleRate;
	u8 Format;
	bool Is16Bit;
};

#endif