/********************************************************************************************** * * DMA-driven DAC driver * by Aaron Giles * **********************************************************************************************/ #pragma once #ifndef __DMADAC_H__ #define __DMADAC_H__ #include "devlegcy.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() { global_free(m_token); } // access to legacy token void *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 void *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__ */