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1 | /* | |
2 | * QEMU Audio subsystem header | |
3 | * | |
4 | * Copyright (c) 2003-2005 Vassili Karpov (malc) | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | #ifndef QEMU_AUDIO_H | |
25 | #define QEMU_AUDIO_H | |
26 | ||
27 | #include "config-host.h" | |
28 | #include "qemu-queue.h" | |
29 | ||
30 | typedef void (*audio_callback_fn) (void *opaque, int avail); | |
31 | ||
32 | typedef enum { | |
33 | AUD_FMT_U8, | |
34 | AUD_FMT_S8, | |
35 | AUD_FMT_U16, | |
36 | AUD_FMT_S16, | |
37 | AUD_FMT_U32, | |
38 | AUD_FMT_S32 | |
39 | } audfmt_e; | |
40 | ||
41 | #ifdef HOST_WORDS_BIGENDIAN | |
42 | #define AUDIO_HOST_ENDIANNESS 1 | |
43 | #else | |
44 | #define AUDIO_HOST_ENDIANNESS 0 | |
45 | #endif | |
46 | ||
47 | struct audsettings { | |
48 | int freq; | |
49 | int nchannels; | |
50 | audfmt_e fmt; | |
51 | int endianness; | |
52 | }; | |
53 | ||
54 | typedef enum { | |
55 | AUD_CNOTIFY_ENABLE, | |
56 | AUD_CNOTIFY_DISABLE | |
57 | } audcnotification_e; | |
58 | ||
59 | struct audio_capture_ops { | |
60 | void (*notify) (void *opaque, audcnotification_e cmd); | |
61 | void (*capture) (void *opaque, void *buf, int size); | |
62 | void (*destroy) (void *opaque); | |
63 | }; | |
64 | ||
65 | struct capture_ops { | |
66 | void (*info) (void *opaque); | |
67 | void (*destroy) (void *opaque); | |
68 | }; | |
69 | ||
70 | typedef struct CaptureState { | |
71 | void *opaque; | |
72 | struct capture_ops ops; | |
73 | QLIST_ENTRY (CaptureState) entries; | |
74 | } CaptureState; | |
75 | ||
76 | typedef struct SWVoiceOut SWVoiceOut; | |
77 | typedef struct CaptureVoiceOut CaptureVoiceOut; | |
78 | typedef struct SWVoiceIn SWVoiceIn; | |
79 | ||
80 | typedef struct QEMUSoundCard { | |
81 | char *name; | |
82 | QLIST_ENTRY (QEMUSoundCard) entries; | |
83 | } QEMUSoundCard; | |
84 | ||
85 | typedef struct QEMUAudioTimeStamp { | |
86 | uint64_t old_ts; | |
87 | } QEMUAudioTimeStamp; | |
88 | ||
89 | void AUD_vlog (const char *cap, const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0); | |
90 | void AUD_log (const char *cap, const char *fmt, ...) GCC_FMT_ATTR(2, 3); | |
91 | ||
92 | void AUD_help (void); | |
93 | void AUD_register_card (const char *name, QEMUSoundCard *card); | |
94 | void AUD_remove_card (QEMUSoundCard *card); | |
95 | CaptureVoiceOut *AUD_add_capture ( | |
96 | struct audsettings *as, | |
97 | struct audio_capture_ops *ops, | |
98 | void *opaque | |
99 | ); | |
100 | void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque); | |
101 | ||
102 | SWVoiceOut *AUD_open_out ( | |
103 | QEMUSoundCard *card, | |
104 | SWVoiceOut *sw, | |
105 | const char *name, | |
106 | void *callback_opaque, | |
107 | audio_callback_fn callback_fn, | |
108 | struct audsettings *settings | |
109 | ); | |
110 | ||
111 | void AUD_close_out (QEMUSoundCard *card, SWVoiceOut *sw); | |
112 | int AUD_write (SWVoiceOut *sw, void *pcm_buf, int size); | |
113 | int AUD_get_buffer_size_out (SWVoiceOut *sw); | |
114 | void AUD_set_active_out (SWVoiceOut *sw, int on); | |
115 | int AUD_is_active_out (SWVoiceOut *sw); | |
116 | ||
117 | void AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); | |
118 | uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); | |
119 | ||
120 | void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol); | |
121 | void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol); | |
122 | ||
123 | SWVoiceIn *AUD_open_in ( | |
124 | QEMUSoundCard *card, | |
125 | SWVoiceIn *sw, | |
126 | const char *name, | |
127 | void *callback_opaque, | |
128 | audio_callback_fn callback_fn, | |
129 | struct audsettings *settings | |
130 | ); | |
131 | ||
132 | void AUD_close_in (QEMUSoundCard *card, SWVoiceIn *sw); | |
133 | int AUD_read (SWVoiceIn *sw, void *pcm_buf, int size); | |
134 | void AUD_set_active_in (SWVoiceIn *sw, int on); | |
135 | int AUD_is_active_in (SWVoiceIn *sw); | |
136 | ||
137 | void AUD_init_time_stamp_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); | |
138 | uint64_t AUD_get_elapsed_usec_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); | |
139 | ||
140 | static inline void *advance (void *p, int incr) | |
141 | { | |
142 | uint8_t *d = p; | |
143 | return (d + incr); | |
144 | } | |
145 | ||
146 | #ifdef __GNUC__ | |
147 | #define audio_MIN(a, b) ( __extension__ ({ \ | |
148 | __typeof (a) ta = a; \ | |
149 | __typeof (b) tb = b; \ | |
150 | ((ta)>(tb)?(tb):(ta)); \ | |
151 | })) | |
152 | ||
153 | #define audio_MAX(a, b) ( __extension__ ({ \ | |
154 | __typeof (a) ta = a; \ | |
155 | __typeof (b) tb = b; \ | |
156 | ((ta)<(tb)?(tb):(ta)); \ | |
157 | })) | |
158 | #else | |
159 | #define audio_MIN(a, b) ((a)>(b)?(b):(a)) | |
160 | #define audio_MAX(a, b) ((a)<(b)?(b):(a)) | |
161 | #endif | |
162 | ||
163 | int wav_start_capture (CaptureState *s, const char *path, int freq, | |
164 | int bits, int nchannels); | |
165 | ||
166 | #endif /* audio.h */ |