// license:BSD-3-Clause // copyright-holders:Andrew Gardner /*************************************************************************** okim9810.h OKI MSM9810 ADPCM(2) sound chip. Notes: The master clock frequency for this chip can range from 3.5MHz to 4.5Mhz. The typical oscillator is a 4.096Mhz crystal. ***************************************************************************/ #ifndef MAME_SOUND_OKIM9810_H #define MAME_SOUND_OKIM9810_H #pragma once #include "okiadpcm.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> okim9810_device class okim9810_device : public device_t, public device_sound_interface, public device_rom_interface { public: // construction/destruction okim9810_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); uint8_t read_status(); void write_tmp_register(uint8_t command); void write_command(uint8_t command); DECLARE_READ8_MEMBER( read ); DECLARE_WRITE8_MEMBER( write ); DECLARE_WRITE8_MEMBER( tmp_register_w ); // serial read/write handlers DECLARE_WRITE_LINE_MEMBER( serial_w ); DECLARE_WRITE_LINE_MEMBER( si_w ); DECLARE_WRITE_LINE_MEMBER( sd_w ); DECLARE_WRITE_LINE_MEMBER( ud_w ); DECLARE_WRITE_LINE_MEMBER( cmd_w ); DECLARE_READ_LINE_MEMBER( so_r ); DECLARE_READ_LINE_MEMBER( sr0_r ); DECLARE_READ_LINE_MEMBER( sr1_r ); DECLARE_READ_LINE_MEMBER( sr2_r ); DECLARE_READ_LINE_MEMBER( sr3_r ); protected: enum { ADPCM_PLAYBACK = 0, ADPCM2_PLAYBACK = 1, NONLINEAR8_PLAYBACK = 2, STRAIGHT8_PLAYBACK = 3, EIGHTBIT_PLAYBACK = 2 }; enum { SECONDARY_FILTER = 0, PRIMARY_FILTER = 1, NO_FILTER = 2, NO_FILTER2 = 3 }; enum { OUTPUT_TO_DIRECT_DAC = 0, OUTPUT_TO_VOLTAGE_FOLLOWER = 1 }; // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual void device_post_load() override; virtual void device_clock_changed() override; // device_sound_interface overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override; // device_rom_interface overrides virtual void rom_bank_updated() override; // a single voice class okim_voice { public: okim_voice(); void generate_audio(device_rom_interface &rom, stream_sample_t **buffers, int samples, const uint8_t global_volume, const uint8_t filter_type); // computes volume scale from 3 volume numbers uint8_t volume_scale(const uint8_t global_volume, const uint8_t channel_volume, const uint8_t pan_volume) const; oki_adpcm_state m_adpcm; // current ADPCM state oki_adpcm2_state m_adpcm2; // current ADPCM2 state uint8_t m_playbackAlgo; // current playback method bool m_looping; uint8_t m_startFlags; uint8_t m_endFlags; offs_t m_base_offset; // pointer to the base memory location uint32_t m_count; // total samples to play uint32_t m_samplingFreq; // voice sampling frequency bool m_playing; // playback state uint32_t m_sample; // current sample number uint8_t m_channel_volume; // volume index set with the CVOL command uint8_t m_pan_volume_left; // volume index set with the PAN command uint8_t m_pan_volume_right; // volume index set with the PAN command int32_t m_startSample; // interpolation state - sample to interpolate from int32_t m_endSample; // interpolation state - sample to interpolate to uint32_t m_interpSampleNum; // interpolation state - fraction between start & end static const uint8_t s_volume_table[16]; }; // internal state sound_stream* m_stream; uint8_t m_TMP_register; uint8_t m_global_volume; // volume index set with the OPT command uint8_t m_filter_type; // interpolation filter type set with the OPT command uint8_t m_output_level; // flag stating if a voltage follower is connected int m_dadr; offs_t m_dadr_start_offset; offs_t m_dadr_end_offset; uint8_t m_dadr_flags; int m_serial; int m_serial_read_latch; int m_serial_write_latch; int m_serial_bits; int m_ud; int m_si; int m_sd; int m_cmd; static constexpr int OKIM9810_VOICES = 8; okim_voice m_voice[OKIM9810_VOICES]; static const uint32_t s_sampling_freq_div_table[16]; }; // device type definition DECLARE_DEVICE_TYPE(OKIM9810, okim9810_device) #endif // MAME_SOUND_OKIM9810_H