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 #include "qemu-common.h" /* For QEMUTimer */
30
31 typedef void (*audio_callback_fn) (void *opaque, int avail);
32
33 typedef enum {
34 AUD_FMT_U8,
35 AUD_FMT_S8,
36 AUD_FMT_U16,
37 AUD_FMT_S16,
38 AUD_FMT_U32,
39 AUD_FMT_S32
40 } audfmt_e;
41
42 #ifdef HOST_WORDS_BIGENDIAN
43 #define AUDIO_HOST_ENDIANNESS 1
44 #else
45 #define AUDIO_HOST_ENDIANNESS 0
46 #endif
47
48 struct audsettings {
49 int freq;
50 int nchannels;
51 audfmt_e fmt;
52 int endianness;
53 };
54
55 typedef enum {
56 AUD_CNOTIFY_ENABLE,
57 AUD_CNOTIFY_DISABLE
58 } audcnotification_e;
59
60 struct audio_capture_ops {
61 void (*notify) (void *opaque, audcnotification_e cmd);
62 void (*capture) (void *opaque, void *buf, int size);
63 void (*destroy) (void *opaque);
64 };
65
66 struct capture_ops {
67 void (*info) (void *opaque);
68 void (*destroy) (void *opaque);
69 };
70
71 typedef struct CaptureState {
72 void *opaque;
73 struct capture_ops ops;
74 QLIST_ENTRY (CaptureState) entries;
75 } CaptureState;
76
77 typedef struct SWVoiceOut SWVoiceOut;
78 typedef struct CaptureVoiceOut CaptureVoiceOut;
79 typedef struct SWVoiceIn SWVoiceIn;
80
81 typedef struct QEMUSoundCard {
82 char *name;
83 QLIST_ENTRY (QEMUSoundCard) entries;
84 } QEMUSoundCard;
85
86 typedef struct QEMUAudioTimeStamp {
87 uint64_t old_ts;
88 } QEMUAudioTimeStamp;
89
90 void AUD_vlog (const char *cap, const char *fmt, va_list ap);
91 void AUD_log (const char *cap, const char *fmt, ...)
92 #ifdef __GNUC__
93 __attribute__ ((__format__ (__printf__, 2, 3)))
94 #endif
95 ;
96
97 void AUD_help (void);
98 void AUD_register_card (const char *name, QEMUSoundCard *card);
99 void AUD_remove_card (QEMUSoundCard *card);
100 CaptureVoiceOut *AUD_add_capture (
101 struct audsettings *as,
102 struct audio_capture_ops *ops,
103 void *opaque
104 );
105 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque);
106
107 SWVoiceOut *AUD_open_out (
108 QEMUSoundCard *card,
109 SWVoiceOut *sw,
110 const char *name,
111 void *callback_opaque,
112 audio_callback_fn callback_fn,
113 struct audsettings *settings
114 );
115
116 void AUD_close_out (QEMUSoundCard *card, SWVoiceOut *sw);
117 int AUD_write (SWVoiceOut *sw, void *pcm_buf, int size);
118 int AUD_get_buffer_size_out (SWVoiceOut *sw);
119 void AUD_set_active_out (SWVoiceOut *sw, int on);
120 int AUD_is_active_out (SWVoiceOut *sw);
121
122 void AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);
123 uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);
124
125 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol);
126 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol);
127
128 SWVoiceIn *AUD_open_in (
129 QEMUSoundCard *card,
130 SWVoiceIn *sw,
131 const char *name,
132 void *callback_opaque,
133 audio_callback_fn callback_fn,
134 struct audsettings *settings
135 );
136
137 void AUD_close_in (QEMUSoundCard *card, SWVoiceIn *sw);
138 int AUD_read (SWVoiceIn *sw, void *pcm_buf, int size);
139 void AUD_set_active_in (SWVoiceIn *sw, int on);
140 int AUD_is_active_in (SWVoiceIn *sw);
141
142 void AUD_init_time_stamp_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts);
143 uint64_t AUD_get_elapsed_usec_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts);
144
advance(void * p,int incr)145 static inline void *advance (void *p, int incr)
146 {
147 uint8_t *d = p;
148 return (d + incr);
149 }
150
151 #ifdef __GNUC__
152 #define audio_MIN(a, b) ( __extension__ ({ \
153 __typeof (a) ta = a; \
154 __typeof (b) tb = b; \
155 ((ta)>(tb)?(tb):(ta)); \
156 }))
157
158 #define audio_MAX(a, b) ( __extension__ ({ \
159 __typeof (a) ta = a; \
160 __typeof (b) tb = b; \
161 ((ta)<(tb)?(tb):(ta)); \
162 }))
163 #else
164 #define audio_MIN(a, b) ((a)>(b)?(b):(a))
165 #define audio_MAX(a, b) ((a)<(b)?(b):(a))
166 #endif
167
168 int wav_start_capture (CaptureState *s, const char *path, int freq,
169 int bits, int nchannels);
170
171 extern int
172 audio_get_backend_count( int is_input );
173
174 extern const char*
175 audio_get_backend_name( int is_input, int index, const char* *pinfo );
176
177 extern int
178 audio_check_backend_name( int is_input, const char* name );
179
180 #endif /* audio.h */
181