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
27 #include "sys-queue.h"
29 typedef void (*audio_callback_fn_t) (void *opaque, int avail);
44 struct audio_capture_ops {
45 void (*state) (void *opaque, int enabled);
46 void (*capture) (void *opaque, void *buf, int size);
49 typedef struct AudioState AudioState;
50 typedef struct SWVoiceOut SWVoiceOut;
51 typedef struct SWVoiceIn SWVoiceIn;
53 typedef struct QEMUSoundCard {
56 LIST_ENTRY (QEMUSoundCard) entries;
59 typedef struct QEMUAudioTimeStamp {
63 void AUD_vlog (const char *cap, const char *fmt, va_list ap);
64 void AUD_log (const char *cap, const char *fmt, ...)
66 __attribute__ ((__format__ (__printf__, 2, 3)))
70 AudioState *AUD_init (void);
72 void AUD_register_card (AudioState *s, const char *name, QEMUSoundCard *card);
73 void AUD_remove_card (QEMUSoundCard *card);
78 struct audio_capture_ops *ops,
82 SWVoiceOut *AUD_open_out (
86 void *callback_opaque,
87 audio_callback_fn_t callback_fn,
88 audsettings_t *settings,
92 void AUD_close_out (QEMUSoundCard *card, SWVoiceOut *sw);
93 int AUD_write (SWVoiceOut *sw, void *pcm_buf, int size);
94 int AUD_get_buffer_size_out (SWVoiceOut *sw);
95 void AUD_set_active_out (SWVoiceOut *sw, int on);
96 int AUD_is_active_out (SWVoiceOut *sw);
98 void AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);
99 uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);
101 SWVoiceIn *AUD_open_in (
105 void *callback_opaque,
106 audio_callback_fn_t callback_fn,
107 audsettings_t *settings,
111 void AUD_close_in (QEMUSoundCard *card, SWVoiceIn *sw);
112 int AUD_read (SWVoiceIn *sw, void *pcm_buf, int size);
113 void AUD_set_active_in (SWVoiceIn *sw, int on);
114 int AUD_is_active_in (SWVoiceIn *sw);
116 void AUD_init_time_stamp_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts);
117 uint64_t AUD_get_elapsed_usec_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts);
119 static inline void *advance (void *p, int incr)
125 uint32_t popcount (uint32_t u);
126 uint32_t lsbindex (uint32_t u);
129 #define audio_MIN(a, b) ( __extension__ ({ \
130 __typeof (a) ta = a; \
131 __typeof (b) tb = b; \
132 ((ta)>(tb)?(tb):(ta)); \
135 #define audio_MAX(a, b) ( __extension__ ({ \
136 __typeof (a) ta = a; \
137 __typeof (b) tb = b; \
138 ((ta)<(tb)?(tb):(ta)); \
141 #define audio_MIN(a, b) ((a)>(b)?(b):(a))
142 #define audio_MAX(a, b) ((a)<(b)?(b):(a))