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// license:BSD-3-Clause
// copyright-holders:Manuel Abadia
#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_t clock);
gaelco_gae1_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, uint32_t 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_snd_data.set_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() override;
virtual void device_stop() override;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;
public:
DECLARE_WRITE16_MEMBER( gaelcosnd_w );
DECLARE_READ16_MEMBER( gaelcosnd_r );
private:
sound_stream *m_stream; /* our stream */
required_region_ptr<uint8_t> 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 */
uint16_t m_sndregs[0x38];
// Table for converting from 8 to 16 bits with volume control
int16_t 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_t clock);
};
extern const device_type GAELCO_CG1V;
#endif /* __GAELCO_SND_H__ */
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