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1 /*
2 * LM4549 Audio Codec Interface
3 *
4 * Copyright (c) 2011
5 * Written by Mathieu Sonet - www.elasticsheep.com
6 *
7 * This code is licensed under the GPL.
8 *
9 * *****************************************************************
10 */
11
12 #ifndef HW_LM4549_H
13 #define HW_LM4549_H
14
15 #include "audio/audio.h"
16
17 typedef void (*lm4549_callback)(void *opaque);
18
19 #define LM4549_BUFFER_SIZE (512 * 2) /* 512 16-bit stereo samples */
20
21
22 typedef struct {
23 QEMUSoundCard card;
24 SWVoiceOut *voice;
25 uint32_t voice_is_active;
26
27 uint16_t regfile[128];
28 lm4549_callback data_req_cb;
29 void *opaque;
30
31 uint16_t buffer[LM4549_BUFFER_SIZE];
32 uint32_t buffer_level;
33 } lm4549_state;
34
35 extern const VMStateDescription vmstate_lm4549_state;
36
37
38 void lm4549_init(lm4549_state *s, lm4549_callback data_req, void *opaque);
39 uint32_t lm4549_read(lm4549_state *s, target_phys_addr_t offset);
40 void lm4549_write(lm4549_state *s, target_phys_addr_t offset, uint32_t value);
41 uint32_t lm4549_write_samples(lm4549_state *s, uint32_t left, uint32_t right);
42
43 #endif /* #ifndef HW_LM4549_H */