122 lines
2.2 KiB
C
122 lines
2.2 KiB
C
#ifndef QSOUND_H
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#define QSOUND_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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Capcom DL-1425 QSound emulator
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==============================
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by superctr (Ian Karlsson)
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with thanks to Valley Bell
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2018-05-12 - 2018-05-15
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*/
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#include <stdint.h>
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struct qsound_voice {
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uint16_t bank;
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int16_t addr; // top word is the sample address
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uint16_t phase;
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uint16_t rate;
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int16_t loop_len;
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int16_t end_addr;
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int16_t volume;
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int16_t echo;
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};
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struct qsound_adpcm {
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uint16_t start_addr;
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uint16_t end_addr;
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uint16_t bank;
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int16_t volume;
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uint16_t flag;
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int16_t cur_vol;
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int16_t step_size;
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uint16_t cur_addr;
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};
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// Q1 Filter
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struct qsound_fir {
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int tap_count; // usually 95
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int delay_pos;
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int16_t table_pos;
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int16_t taps[95];
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int16_t delay_line[95];
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};
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// Delay line
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struct qsound_delay {
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int16_t delay;
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int16_t volume;
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int16_t write_pos;
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int16_t read_pos;
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int16_t delay_line[51];
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};
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struct qsound_echo {
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uint16_t end_pos;
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int16_t feedback;
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int16_t length;
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int16_t last_sample;
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int16_t delay_line[1024];
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int16_t delay_pos;
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};
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struct qsound_chip {
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unsigned long rom_mask;
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uint8_t *rom_data;
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uint32_t mute_mask;
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uint16_t data_latch;
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int16_t out[2];
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int16_t pan_tables[2][2][98];
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struct qsound_voice voice[16];
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struct qsound_adpcm adpcm[3];
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uint16_t voice_pan[16+3];
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int16_t voice_output[16+3];
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struct qsound_echo echo;
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struct qsound_fir filter[2];
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struct qsound_fir alt_filter[2];
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struct qsound_delay wet[2];
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struct qsound_delay dry[2];
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uint16_t state;
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uint16_t next_state;
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uint16_t delay_update;
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int state_counter;
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int ready_flag;
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uint16_t *register_map[256];
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};
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long qsound_start(struct qsound_chip *chip, int clock);
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void qsound_reset(struct qsound_chip *chip);
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void qsound_update(struct qsound_chip *chip);
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void qsound_stream_update(struct qsound_chip *chip, int16_t **outputs, int samples);
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void qsound_w(struct qsound_chip *chip, uint8_t offset, uint8_t data);
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uint8_t qsound_r(struct qsound_chip *chip);
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void qsound_write_data(struct qsound_chip *chip, uint8_t address, uint16_t data);
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uint16_t qsound_read_data(struct qsound_chip *chip, uint8_t address);
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#ifdef __cplusplus
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};
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#endif
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#endif
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