mirror of
https://github.com/holub/mame
synced 2025-05-03 13:06:47 +03:00
92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
// license:BSD-3-Clause
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// copyright-holders:Aaron Giles
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/***************************************************************************
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speaker.h
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Speaker output sound device.
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Speakers have (x, y, z) coordinates in 3D space:
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* Observer is at position (0, 0, 0)
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* Positive x is to the right of the observer
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* Negative x is to the left of the observer
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* Positive y is above the observer
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* Negative y is below the observer
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* Positive z is in front of the observer
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* Negative z is behind the observer
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Currently, MAME only considers the sign of the x coordinate (not its
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magnitude), and completely ignores the y and z coordinates.
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***************************************************************************/
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#ifndef MAME_EMU_SPEAKER_H
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#define MAME_EMU_SPEAKER_H
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#pragma once
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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// device type definition
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DECLARE_DEVICE_TYPE(SPEAKER, speaker_device)
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> speaker_device
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class speaker_device : public device_t, public device_mixer_interface
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{
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public:
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// construction/destruction
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speaker_device(const machine_config &mconfig, const char *tag, device_t *owner, double x, double y, double z)
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: speaker_device(mconfig, tag, owner, 0)
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{
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set_position(x, y, z);
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}
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speaker_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 0);
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virtual ~speaker_device();
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// inline configuration helpers
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speaker_device &set_position(double x, double y, double z) { m_x = x; m_y = y; m_z = z; return *this; }
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speaker_device &front_center() { set_position(0.0, 0.0, 1.0); return *this; }
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speaker_device &front_left() { set_position(-0.2, 0.0, 1.0); return *this; }
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speaker_device &front_right() { set_position(0.2, 0.0, 1.0); return *this; }
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speaker_device &rear_center() { set_position(0.0, 0.0, -0.5); return *this; }
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speaker_device &rear_left() { set_position(-0.2, 0.0, -0.5); return *this; }
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speaker_device &rear_right() { set_position(0.2, 0.0, -0.5); return *this; }
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speaker_device &subwoofer() { set_position(0.0, 0.0, 0.0); return *this; }
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// internally for use by the sound system
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void mix(s32 *leftmix, s32 *rightmix, int &samples_this_update, bool suppress);
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protected:
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// device-level overrides
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virtual void device_start() override ATTR_COLD;
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// inline configuration state
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double m_x;
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double m_y;
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double m_z;
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// internal state
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#ifdef MAME_DEBUG
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s32 m_max_sample; // largest sample value we've seen
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s32 m_clipped_samples; // total number of clipped samples
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s32 m_total_samples; // total number of samples
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#endif
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};
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// speaker device iterator
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typedef device_type_iterator<speaker_device> speaker_device_iterator;
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#endif // MAME_EMU_SPEAKER_H
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