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// license:BSD-3-Clause
// copyright-holders:Anthony Kruize, Wilbert Pol
// thanks-to:Shay Green
#ifndef MAME_SOUND_GB_H
#define MAME_SOUND_GB_H
class gameboy_sound_device : public device_t,
public device_sound_interface
{
public:
static constexpr feature_type imperfect_features() { return feature::SOUND; } // incorrect sound pitch
gameboy_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual u8 sound_r(offs_t offset);
virtual u8 wave_r(offs_t offset) = 0;
virtual void sound_w(offs_t offset, u8 data) = 0;
virtual void wave_w(offs_t offset, u8 data) = 0;
protected:
gameboy_sound_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_clock_changed() override;
virtual void device_reset() override ATTR_COLD;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;
protected:
enum
{
NR10 = 0x00,
NR11 = 0x01,
NR12 = 0x02,
NR13 = 0x03,
NR14 = 0x04,
// 0x05
NR21 = 0x06,
NR22 = 0x07,
NR23 = 0x08,
NR24 = 0x09,
NR30 = 0x0A,
NR31 = 0x0B,
NR32 = 0x0C,
NR33 = 0x0D,
NR34 = 0x0E,
// 0x0F
NR41 = 0x10,
NR42 = 0x11,
NR43 = 0x12,
NR44 = 0x13,
NR50 = 0x14,
NR51 = 0x15,
NR52 = 0x16,
// 0x17 - 0x1F
AUD3W0 = 0x20,
AUD3W1 = 0x21,
AUD3W2 = 0x22,
AUD3W3 = 0x23,
AUD3W4 = 0x24,
AUD3W5 = 0x25,
AUD3W6 = 0x26,
AUD3W7 = 0x27,
AUD3W8 = 0x28,
AUD3W9 = 0x29,
AUD3WA = 0x2A,
AUD3WB = 0x2B,
AUD3WC = 0x2C,
AUD3WD = 0x2D,
AUD3WE = 0x2E,
AUD3WF = 0x2F
};
static const unsigned int FRAME_CYCLES = 8192;
static const int wave_duty_table[4][8];
sound_stream *m_channel;
struct SOUND
{
/* Common */
uint8_t reg[5];
bool on;
uint8_t channel;
uint8_t length;
uint8_t length_mask;
bool length_counting;
bool length_enabled;
/* Mode 1, 2, 3 */
int64_t cycles_left;
int8_t duty;
/* Mode 1, 2, 4 */
bool envelope_enabled;
int8_t envelope_value;
int8_t envelope_direction;
uint8_t envelope_time;
uint8_t envelope_count;
int8_t signal;
/* Mode 1 */
uint16_t frequency;
uint16_t frequency_counter;
bool sweep_enabled;
bool sweep_neg_mode_used;
uint8_t sweep_shift;
int32_t sweep_direction;
uint8_t sweep_time;
uint8_t sweep_count;
/* Mode 3 */
uint8_t size; // AGB specific
uint8_t bank; // AGB specific
uint8_t level;
uint8_t offset;
uint32_t duty_count;
int8_t current_sample;
bool sample_reading;
/* Mode 4 */
bool noise_short;
uint16_t noise_lfsr;
};
SOUND m_snd_1;
SOUND m_snd_2;
SOUND m_snd_3;
SOUND m_snd_4;
struct
{
uint8_t on;
uint8_t vol_left;
uint8_t vol_right;
uint8_t mode1_left;
uint8_t mode1_right;
uint8_t mode2_left;
uint8_t mode2_right;
uint8_t mode3_left;
uint8_t mode3_right;
uint8_t mode4_left;
uint8_t mode4_right;
uint64_t cycles;
bool wave_ram_locked;
} m_snd_control;
uint8_t m_snd_regs[0x30];
uint8_t m_wave_ram[2][0x10]; // 16 bytes, 2 banks for AGB
attotime m_last_updated;
emu_timer *m_timer;
virtual void apu_power_off() = 0;
void sound_w_internal(int offset, uint8_t data);
void update_square_channel(SOUND &snd, uint64_t cycles);
virtual void update_wave_channel(SOUND &snd, uint64_t cycles) = 0;
void update_noise_channel(SOUND &snd, uint64_t cycles);
int32_t calculate_next_sweep(SOUND &snd);
void apply_next_sweep(SOUND &snd);
void tick_length(SOUND &snd);
void tick_sweep(SOUND &snd);
void tick_envelope(SOUND &snd);
void update_state();
bool dac_enabled(SOUND &snd);
virtual void corrupt_wave_ram() { }
uint64_t noise_period_cycles();
TIMER_CALLBACK_MEMBER(timer_callback);
};
class dmg_apu_device : public gameboy_sound_device
{
public:
dmg_apu_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual u8 wave_r(offs_t offset) override;
virtual void wave_w(offs_t offset, u8 data) override;
virtual void sound_w(offs_t offset, u8 data) override;
protected:
virtual void apu_power_off() override;
virtual void corrupt_wave_ram() override;
virtual void update_wave_channel(SOUND &snd, uint64_t cycles) override;
};
class cgb04_apu_device : public gameboy_sound_device
{
public:
cgb04_apu_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual u8 wave_r(offs_t offset) override;
virtual void wave_w(offs_t offset, u8 data) override;
virtual void sound_w(offs_t offset, u8 data) override;
protected:
cgb04_apu_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
virtual void device_reset() override ATTR_COLD;
virtual void apu_power_off() override;
virtual void update_wave_channel(SOUND &snd, uint64_t cycles) override;
};
class agb_apu_device : public cgb04_apu_device
{
public:
agb_apu_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual u8 sound_r(offs_t offset) override;
virtual u8 wave_r(offs_t offset) override;
virtual void wave_w(offs_t offset, u8 data) override;
protected:
agb_apu_device(const machine_config &mconfig, device_type &type, const char *tag, device_t *owner, uint32_t clock);
virtual void device_reset() override ATTR_COLD;
virtual void update_wave_channel(SOUND &snd, uint64_t cycles) override;
};
DECLARE_DEVICE_TYPE(DMG_APU, dmg_apu_device)
//DECLARE_DEVICE_TYPE(CGB02_APU, cgb02_apu_device)
DECLARE_DEVICE_TYPE(CGB04_APU, cgb04_apu_device)
//DECLARE_DEVICE_TYPE(CGB05_APU, cgb05_apu_device)
DECLARE_DEVICE_TYPE(AGB_APU, agb_apu_device)
#endif // MAME_SOUND_GB_H
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