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-rw-r--r--trunk/src/emu/sound/okim6295.h125
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diff --git a/trunk/src/emu/sound/okim6295.h b/trunk/src/emu/sound/okim6295.h
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+/***************************************************************************
+
+ okim6295.h
+
+ OKIM 6295 ADCPM sound chip.
+
+***************************************************************************/
+
+#pragma once
+
+#ifndef __OKIM6295_H__
+#define __OKIM6295_H__
+
+#include "sound/okiadpcm.h"
+
+
+
+//**************************************************************************
+// CONSTANTS
+//**************************************************************************
+
+enum
+{
+ OKIM6295_PIN7_LOW = 0,
+ OKIM6295_PIN7_HIGH = 1
+};
+
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_OKIM6295_ADD(_tag, _clock, _pin7) \
+ MCFG_DEVICE_ADD(_tag, OKIM6295, _clock) \
+ MCFG_OKIM6295_PIN7(_pin7)
+
+#define MCFG_OKIM6295_REPLACE(_tag, _clock, _pin7) \
+ MCFG_DEVICE_REPLACE(_tag, OKIM6295, _clock) \
+ MCFG_OKIM6295_PIN7(_pin7)
+
+#define MCFG_OKIM6295_PIN7(_pin7) \
+ okim6295_device::static_set_pin7(*device, _pin7); \
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+
+// ======================> okim6295_device
+
+class okim6295_device : public device_t,
+ public device_sound_interface,
+ public device_memory_interface
+{
+public:
+ // construction/destruction
+ okim6295_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // inline configuration helpers
+ static void static_set_pin7(device_t &device, int pin7);
+
+ // runtime configuration
+ void set_bank_base(offs_t base, bool bDontUpdateStream = false);
+ void set_pin7(int pin7);
+
+ UINT8 read_status();
+ void write_command(UINT8 command);
+
+ DECLARE_READ8_MEMBER( read );
+ DECLARE_WRITE8_MEMBER( write );
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+ virtual void device_post_load();
+ virtual void device_clock_changed();
+
+ // device_memory_interface overrides
+ virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const;
+
+ // device_sound_interface overrides
+ virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
+
+ // a single voice
+ class okim_voice
+ {
+ public:
+ okim_voice();
+ void generate_adpcm(direct_read_data &direct, stream_sample_t *buffer, int samples);
+
+ oki_adpcm_state m_adpcm; // current ADPCM state
+ bool m_playing;
+ offs_t m_base_offset; // pointer to the base memory location
+ UINT32 m_sample; // current sample number
+ UINT32 m_count; // total samples to play
+ INT8 m_volume; // output volume
+ };
+
+ // configuration state
+ const address_space_config m_space_config;
+
+ // internal state
+ static const int OKIM6295_VOICES = 4;
+
+ okim_voice m_voice[OKIM6295_VOICES];
+ INT32 m_command;
+ bool m_bank_installed;
+ offs_t m_bank_offs;
+ sound_stream * m_stream;
+ UINT8 m_pin7_state;
+ direct_read_data * m_direct;
+
+ static const UINT8 s_volume_table[16];
+};
+
+
+// device type definition
+extern const device_type OKIM6295;
+
+
+#endif /* __OKIM6295_H__ */