mirror of https://gitee.com/openkylin/qemu.git
45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
/*
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* LM4549 Audio Codec Interface
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*
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* Copyright (c) 2011
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* Written by Mathieu Sonet - www.elasticsheep.com
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*
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* This code is licensed under the GPL.
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*
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* *****************************************************************
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*/
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#ifndef HW_LM4549_H
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#define HW_LM4549_H
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#include "audio/audio.h"
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#include "exec/hwaddr.h"
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typedef void (*lm4549_callback)(void *opaque);
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#define LM4549_BUFFER_SIZE (512 * 2) /* 512 16-bit stereo samples */
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typedef struct {
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QEMUSoundCard card;
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SWVoiceOut *voice;
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uint32_t voice_is_active;
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uint16_t regfile[128];
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lm4549_callback data_req_cb;
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void *opaque;
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uint16_t buffer[LM4549_BUFFER_SIZE];
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uint32_t buffer_level;
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} lm4549_state;
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extern const VMStateDescription vmstate_lm4549_state;
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void lm4549_init(lm4549_state *s, lm4549_callback data_req, void *opaque);
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uint32_t lm4549_read(lm4549_state *s, hwaddr offset);
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void lm4549_write(lm4549_state *s, hwaddr offset, uint32_t value);
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uint32_t lm4549_write_samples(lm4549_state *s, uint32_t left, uint32_t right);
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#endif /* HW_LM4549_H */
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