/*
   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();
	
	/// set the data size
	void set_size(size_t size);
	
	/// grow the buffer
	void grow(size_t size);

	/// 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 of the buffer
	inline size_t buff_size() {
		return pcm_buff_size;
	}
	
	/// size of the audio data, 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;
	}

private:
	unsigned char		*pcm_data;

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

}

#endif // __INCLUDED_AUDIO_PCM_H__