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-rw-r--r--src/devices/sound/bbd.h97
1 files changed, 97 insertions, 0 deletions
diff --git a/src/devices/sound/bbd.h b/src/devices/sound/bbd.h
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+++ b/src/devices/sound/bbd.h
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+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
+#ifndef MAME_SOUND_BBD_H
+#define MAME_SOUND_BBD_H
+
+#pragma once
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> bbd_device_base
+
+class bbd_device_base : public device_t, public device_sound_interface
+{
+public:
+ void tick();
+
+protected:
+ // internal constructor
+ bbd_device_base(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock, device_type type);
+
+ void set_bucket_count(int buckets);
+
+ // device-level overrides
+ virtual void device_start() override ATTR_COLD;
+ virtual void device_reset() override ATTR_COLD;
+
+ // sound stream update overrides
+ virtual void sound_stream_update(sound_stream &stream) override;
+
+protected:
+ // override to convert clock to sample rate
+ sound_stream::sample_t outputval(s32 index) const { return m_buffer[(m_curpos - index) % std::size(m_buffer)]; }
+ virtual u32 sample_rate() const { return clock(); }
+
+ sound_stream * m_stream;
+ u32 m_curpos;
+ std::vector<sound_stream::sample_t> m_buffer;
+};
+
+
+// ======================> mn3004_device
+
+class mn3004_device : public bbd_device_base
+{
+public:
+ mn3004_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
+};
+
+DECLARE_DEVICE_TYPE(MN3004, mn3004_device)
+
+
+// ======================> mn3005_device
+
+class mn3005_device : public bbd_device_base
+{
+public:
+ mn3005_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
+};
+
+DECLARE_DEVICE_TYPE(MN3005, mn3005_device)
+
+
+// ======================> mn3006_device
+
+class mn3006_device : public bbd_device_base
+{
+public:
+ mn3006_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
+};
+
+DECLARE_DEVICE_TYPE(MN3006, mn3006_device)
+
+
+// ======================> mn3204p_device
+
+class mn3204p_device : public bbd_device_base
+{
+public:
+ mn3204p_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
+};
+
+DECLARE_DEVICE_TYPE(MN3204P, mn3204p_device)
+
+
+// ======================> mn3207_device
+
+class mn3207_device : public bbd_device_base
+{
+public:
+ mn3207_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
+};
+
+DECLARE_DEVICE_TYPE(MN3207, mn3207_device)
+
+#endif // MAME_SOUND_BBD_H