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60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
//
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// ai/controller.h: Audio interface controller.
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//
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// CEN64: Cycle-Accurate Nintendo 64 Emulator.
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// Copyright (C) 2015, Tyler J. Stachecki.
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//
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// This file is subject to the terms and conditions defined in
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// 'LICENSE', which is part of this source code package.
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//
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#ifndef __ai_controller_h__
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#define __ai_controller_h__
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#include "common.h"
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#include "ai/context.h"
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enum ai_register {
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#define X(reg) reg,
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#include "ai/registers.md"
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#undef X
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NUM_AI_REGISTERS
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};
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#ifdef DEBUG_MMIO_REGISTER_ACCESS
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extern const char *ap_register_mnemonics[NUM_AI_REGISTERS];
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#endif
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struct ai_fifo_entry {
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uint32_t address;
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uint32_t length;
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};
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struct ai_controller {
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struct bus_controller *bus;
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uint32_t regs[NUM_AI_REGISTERS];
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struct cen64_ai_context ctx;
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uint64_t counter;
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unsigned fifo_count, fifo_wi, fifo_ri;
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struct ai_fifo_entry fifo[2];
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bool no_output;
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};
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cen64_cold int ai_init(struct ai_controller *ai, struct bus_controller *bus,
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bool no_interface);
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// Only invoke ai_cycle_ when the counter has expired (timeout).
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void ai_cycle_(struct ai_controller *ai);
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cen64_flatten cen64_hot static inline void ai_cycle(struct ai_controller *ai) {
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if (unlikely(ai->counter-- == 0))
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ai_cycle_(ai);
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}
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int read_ai_regs(void *opaque, uint32_t address, uint32_t *word);
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int write_ai_regs(void *opaque, uint32_t address, uint32_t word, uint32_t dqm);
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#endif
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