xref: /illumos-kvm-cmd/audio/audio.h (revision 68396ea9)
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 
advance(void * p,int incr)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 */
167