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 #include "exec/hwaddr.h"
17 
18 typedef void (*lm4549_callback)(void *opaque);
19 
20 #define LM4549_BUFFER_SIZE (512 * 2) /* 512 16-bit stereo samples */
21 
22 
23 typedef struct {
24     QEMUSoundCard card;
25     SWVoiceOut *voice;
26     uint32_t voice_is_active;
27 
28     uint16_t regfile[128];
29     lm4549_callback data_req_cb;
30     void *opaque;
31 
32     uint16_t buffer[LM4549_BUFFER_SIZE];
33     uint32_t buffer_level;
34 } lm4549_state;
35 
36 extern const VMStateDescription vmstate_lm4549_state;
37 
38 
39 void lm4549_init(lm4549_state *s, lm4549_callback data_req, void *opaque);
40 uint32_t lm4549_read(lm4549_state *s, hwaddr offset);
41 void lm4549_write(lm4549_state *s, hwaddr offset, uint32_t value);
42 uint32_t lm4549_write_samples(lm4549_state *s, uint32_t left, uint32_t right);
43 
44 #endif /* HW_LM4549_H */
45