105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Definitions for AD1848 / CS4248 / CS4231 (Windows Sound System) codec emulation.
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*
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*
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*
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* Authors: Sarah Walker, <https://pcem-emulator.co.uk/>
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* TheCollector1995, <mariogplayer@gmail.com>
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* RichardG, <richardg867@gmail.com>
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*
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* Copyright 2008-2020 Sarah Walker.
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* Copyright 2018-2020 TheCollector1995.
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* Copyright 2021-2025 RichardG.
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*/
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#ifndef SOUND_AD1848_H
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#define SOUND_AD1848_H
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enum {
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AD1848_TYPE_DEFAULT = 0,
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AD1848_TYPE_CS4248 = 1,
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AD1848_TYPE_CS4231 = 2,
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AD1848_TYPE_CS4232 = 3,
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AD1848_TYPE_CS4236 = 4,
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AD1848_TYPE_CS4236B = 5,
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AD1848_TYPE_CS4235 = 6
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};
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enum {
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AD1848_AUX1 = 2,
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AD1848_AUX2 = 4,
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AD1848_OUT = 6,
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AD1848_LINE_IN = 18,
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AD1848_MONO = 26
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};
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typedef struct ad1848_t {
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uint8_t type;
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uint8_t index;
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uint8_t xindex;
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uint8_t regs[32];
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uint8_t xregs[32];
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uint8_t status; /* 16 original registers + 16 CS4231A extensions + 32 CS4236 extensions */
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int count;
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uint8_t trd;
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uint8_t mce;
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uint8_t wten : 1;
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int16_t out_l;
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int16_t out_r;
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int8_t cd_vol_reg;
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double cd_vol_l;
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double cd_vol_r;
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int fm_vol_l;
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int fm_vol_r;
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uint8_t fmt_mask;
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uint8_t wave_vol_mask;
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uint8_t enable : 1;
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uint8_t irq : 4;
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uint8_t dma : 3;
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uint8_t adpcm_ref;
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int8_t adpcm_step;
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int freq;
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int adpcm_data;
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int adpcm_pos;
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uint8_t dma_ff;
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uint32_t dma_data;
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pc_timer_t timer_count;
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uint64_t timer_latch;
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int16_t buffer[SOUNDBUFLEN * 2];
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int pos;
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void *cram_priv;
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void (*cram_write)(uint16_t addr, uint8_t val, void *priv);
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uint8_t (*cram_read)(uint16_t addr, void *priv);
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} ad1848_t;
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extern void ad1848_setirq(ad1848_t *ad1848, int irq);
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extern void ad1848_setdma(ad1848_t *ad1848, int dma);
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extern void ad1848_updatevolmask(ad1848_t *ad1848);
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extern uint8_t ad1848_read(uint16_t addr, void *priv);
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extern void ad1848_write(uint16_t addr, uint8_t val, void *priv);
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extern void ad1848_update(ad1848_t *ad1848);
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extern void ad1848_speed_changed(ad1848_t *ad1848);
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extern void ad1848_set_cd_audio_channel(void *priv, int channel);
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extern void ad1848_filter_cd_audio(int channel, double *buffer, void *priv);
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extern void ad1848_filter_aux2(void* priv, double* out_l, double* out_r);
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extern void ad1848_init(ad1848_t *ad1848, uint8_t type);
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#endif /*SOUND_AD1848_H*/
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