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 |