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/*
   audio/pcm.h
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2
*/

#ifndef __INCLUDED_AUDIO_PCM_H__
#define __INCLUDED_AUDIO_PCM_H__

#include <string>

namespace audio {

/// class to hold PCM audio data
class PCM {

public:
	PCM(unsigned int samplerate, unsigned int samplesize, unsigned int channels, size_t size);
	~PCM();

	void clear();

	/// pointer to the raw pcm data
	inline unsigned char *data() { return pcm_data; }

	/// index into the raw pcm data
	inline unsigned char *operator[](size_t index) { return &pcm_data[index]; }

	/// size in bytes
	inline size_t size() { return pcm_size; }

	/// samplerate in samples per second
	inline unsigned int samplerate() const { return pcm_samplerate; }

	/// number of bits per sample
	inline unsigned int bitspersample() const { return pcm_bitspersample; }

	/// number of channels
	inline unsigned int channels() const { return pcm_channels; }

	/// load PCM audio data from file
	static void load(std::string const & name);

	static void load(const char *name);

private:
	unsigned char		*pcm_data;

	unsigned int 		pcm_channels;
	unsigned int		pcm_samplerate;
	unsigned int		pcm_bitspersample;
	size_t			pcm_size;
};

}

#endif // __INCLUDED_AUDIO_PCM_H__