event_match: always match on None value
[qemu/ar7.git] / audio / audio.h
blob64b0f761bcaa35e26348a6aef404def69afb056f
1 /*
2 * QEMU Audio subsystem header
4 * Copyright (c) 2003-2005 Vassili Karpov (malc)
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
25 #ifndef QEMU_AUDIO_H
26 #define QEMU_AUDIO_H
28 #include "qemu/queue.h"
29 #include "qapi/qapi-types-audio.h"
31 typedef void (*audio_callback_fn) (void *opaque, int avail);
33 #ifdef HOST_WORDS_BIGENDIAN
34 #define AUDIO_HOST_ENDIANNESS 1
35 #else
36 #define AUDIO_HOST_ENDIANNESS 0
37 #endif
39 typedef struct audsettings {
40 int freq;
41 int nchannels;
42 AudioFormat fmt;
43 int endianness;
44 } audsettings;
46 audsettings audiodev_to_audsettings(AudiodevPerDirectionOptions *pdo);
47 int audioformat_bytes_per_sample(AudioFormat fmt);
48 int audio_buffer_frames(AudiodevPerDirectionOptions *pdo,
49 audsettings *as, int def_usecs);
50 int audio_buffer_samples(AudiodevPerDirectionOptions *pdo,
51 audsettings *as, int def_usecs);
52 int audio_buffer_bytes(AudiodevPerDirectionOptions *pdo,
53 audsettings *as, int def_usecs);
55 typedef enum {
56 AUD_CNOTIFY_ENABLE,
57 AUD_CNOTIFY_DISABLE
58 } audcnotification_e;
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);
66 struct capture_ops {
67 void (*info) (void *opaque);
68 void (*destroy) (void *opaque);
71 typedef struct CaptureState {
72 void *opaque;
73 struct capture_ops ops;
74 QLIST_ENTRY (CaptureState) entries;
75 } CaptureState;
77 typedef struct SWVoiceOut SWVoiceOut;
78 typedef struct CaptureVoiceOut CaptureVoiceOut;
79 typedef struct SWVoiceIn SWVoiceIn;
81 typedef struct QEMUSoundCard {
82 char *name;
83 QLIST_ENTRY (QEMUSoundCard) entries;
84 } QEMUSoundCard;
86 typedef struct QEMUAudioTimeStamp {
87 uint64_t old_ts;
88 } QEMUAudioTimeStamp;
90 void AUD_vlog (const char *cap, const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0);
91 void AUD_log (const char *cap, const char *fmt, ...) GCC_FMT_ATTR(2, 3);
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
100 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque);
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
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);
117 void AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);
118 uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);
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);
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
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);
137 void AUD_init_time_stamp_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts);
138 uint64_t AUD_get_elapsed_usec_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts);
140 static inline void *advance (void *p, int incr)
142 uint8_t *d = p;
143 return (d + incr);
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)); \
153 #define audio_MAX(a, b) ( __extension__ ({ \
154 __typeof (a) ta = a; \
155 __typeof (b) tb = b; \
156 ((ta)<(tb)?(tb):(ta)); \
158 #else
159 #define audio_MIN(a, b) ((a)>(b)?(b):(a))
160 #define audio_MAX(a, b) ((a)<(b)?(b):(a))
161 #endif
163 int wav_start_capture (CaptureState *s, const char *path, int freq,
164 int bits, int nchannels);
166 bool audio_is_cleaning_up(void);
167 void audio_cleanup(void);
169 void audio_sample_to_uint64(void *samples, int pos,
170 uint64_t *left, uint64_t *right);
171 void audio_sample_from_uint64(void *samples, int pos,
172 uint64_t left, uint64_t right);
174 void audio_parse_option(const char *opt);
175 void audio_init_audiodevs(void);
176 void audio_legacy_help(void);
178 #endif /* QEMU_AUDIO_H */