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#pragma once

#ifndef __GAELCO_SND_H__
#define __GAELCO_SND_H__

#define GAELCO_NUM_CHANNELS     0x07
#define GAELCO_VOLUME_LEVELS    0x10


//**************************************************************************
//  INTERFACE CONFIGURATION MACROS
//**************************************************************************

#define MCFG_GAELCO_SND_DATA(_tag) \
	gaelco_gae1_device::set_snd_data_tag(*device, _tag);

#define MCFG_GAELCO_BANKS(_offs1, _offs2, _offs3, _offs4) \
	gaelco_gae1_device::set_bank_offsets(*device, _offs1, _offs2, _offs3, _offs4);


//**************************************************************************
//  TYPE DEFINITIONS
//**************************************************************************

// ======================> Sound Channel

struct gaelco_sound_channel
{
	int active;         // is it playing?
	int loop;           // = 0 no looping, = 1 looping
	int chunkNum;       // current chunk if looping
};


// ======================> gaelco_gae1_device

class gaelco_gae1_device : public device_t,
							public device_sound_interface
{
public:
	gaelco_gae1_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
	gaelco_gae1_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
	~gaelco_gae1_device() { }

	static void set_snd_data_tag(device_t &device, const char *tag) { downcast<gaelco_gae1_device &>(device).m_data_tag = tag; }
	static void set_bank_offsets(device_t &device, int offs1, int offs2, int offs3, int offs4)
	{
		gaelco_gae1_device &dev = downcast<gaelco_gae1_device &>(device);
		dev.m_banks[0] = offs1;
		dev.m_banks[1] = offs2;
		dev.m_banks[2] = offs3;
		dev.m_banks[3] = offs4;
	}
	
protected:
	// device-level overrides
	virtual void device_start();
	virtual void device_stop();

	// sound stream update overrides
	virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);

public:
	DECLARE_WRITE16_MEMBER( gaelcosnd_w );
	DECLARE_READ16_MEMBER( gaelcosnd_r );

private:
	sound_stream *m_stream;                                 /* our stream */
	UINT8 *m_snd_data;                                      /* PCM data */
	int m_banks[4];                                         /* start of each ROM bank */
	gaelco_sound_channel m_channel[GAELCO_NUM_CHANNELS];    /* 7 stereo channels */

	const char *m_data_tag;

	UINT16 m_sndregs[0x38];

	// Table for converting from 8 to 16 bits with volume control
	INT16 m_volume_table[GAELCO_VOLUME_LEVELS][256];
};

extern const device_type GAELCO_GAE1;



// ======================> gaelco_cg1v_device

class gaelco_cg1v_device : public gaelco_gae1_device
{
public:
	gaelco_cg1v_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};

extern const device_type GAELCO_CG1V;


#endif /* __GAELCO_SND_H__ */