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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/**********************************************************************************************
*
* DMA-driven DAC driver
* by Aaron Giles
*
**********************************************************************************************/
#pragma once
#ifndef __DMADAC_H__
#define __DMADAC_H__
class dmadac_sound_device : public device_t,
public device_sound_interface
{
public:
dmadac_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
~dmadac_sound_device();
// access to legacy token
struct dmadac_state *token() const { assert(m_token != NULL); return m_token; }
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_start();
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
private:
// internal state
struct dmadac_state *m_token;
};
extern const device_type DMADAC;
void dmadac_transfer(dmadac_sound_device **devlist, UINT8 num_channels, offs_t channel_spacing, offs_t frame_spacing, offs_t total_frames, INT16 *data);
void dmadac_enable(dmadac_sound_device **devlist, UINT8 num_channels, UINT8 enable);
void dmadac_set_frequency(dmadac_sound_device **devlist, UINT8 num_channels, double frequency);
void dmadac_set_volume(dmadac_sound_device **devlist, UINT8 num_channels, UINT16 volume);
#endif /* __DMADAC_H__ */
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