source: trunk/packages/xen-3.1/xen-3.1/tools/ioemu/audio/audio.h @ 34

Last change on this file since 34 was 34, checked in by hartmans, 18 years ago

Add xen and xen-common

File size: 4.8 KB
Line 
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.h"
28#include "sys-queue.h"
29
30typedef void (*audio_callback_fn_t) (void *opaque, int avail);
31
32typedef enum {
33    AUD_FMT_U8,
34    AUD_FMT_S8,
35    AUD_FMT_U16,
36    AUD_FMT_S16
37} audfmt_e;
38
39#ifdef WORDS_BIGENDIAN
40#define AUDIO_HOST_ENDIANNESS 1
41#else
42#define AUDIO_HOST_ENDIANNESS 0
43#endif
44
45typedef struct {
46    int freq;
47    int nchannels;
48    audfmt_e fmt;
49    int endianness;
50} audsettings_t;
51
52typedef enum {
53    AUD_CNOTIFY_ENABLE,
54    AUD_CNOTIFY_DISABLE
55} audcnotification_e;
56
57struct audio_capture_ops {
58    void (*notify) (void *opaque, audcnotification_e cmd);
59    void (*capture) (void *opaque, void *buf, int size);
60    void (*destroy) (void *opaque);
61};
62
63struct capture_ops {
64    void (*info) (void *opaque);
65    void (*destroy) (void *opaque);
66};
67
68typedef struct CaptureState {
69    void *opaque;
70    struct capture_ops ops;
71    LIST_ENTRY (CaptureState) entries;
72} CaptureState;
73
74typedef struct AudioState AudioState;
75typedef struct SWVoiceOut SWVoiceOut;
76typedef struct CaptureVoiceOut CaptureVoiceOut;
77typedef struct SWVoiceIn SWVoiceIn;
78
79typedef struct QEMUSoundCard {
80    AudioState *audio;
81    char *name;
82    LIST_ENTRY (QEMUSoundCard) entries;
83} QEMUSoundCard;
84
85typedef struct QEMUAudioTimeStamp {
86    uint64_t old_ts;
87} QEMUAudioTimeStamp;
88
89void AUD_vlog (const char *cap, const char *fmt, va_list ap);
90void AUD_log (const char *cap, const char *fmt, ...)
91#ifdef __GNUC__
92    __attribute__ ((__format__ (__printf__, 2, 3)))
93#endif
94    ;
95
96AudioState *AUD_init (void);
97void AUD_help (void);
98void AUD_register_card (AudioState *s, const char *name, QEMUSoundCard *card);
99void AUD_remove_card (QEMUSoundCard *card);
100CaptureVoiceOut *AUD_add_capture (
101    AudioState *s,
102    audsettings_t *as,
103    struct audio_capture_ops *ops,
104    void *opaque
105    );
106void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque);
107
108SWVoiceOut *AUD_open_out (
109    QEMUSoundCard *card,
110    SWVoiceOut *sw,
111    const char *name,
112    void *callback_opaque,
113    audio_callback_fn_t callback_fn,
114    audsettings_t *settings
115    );
116
117void AUD_close_out (QEMUSoundCard *card, SWVoiceOut *sw);
118int  AUD_write (SWVoiceOut *sw, void *pcm_buf, int size);
119int  AUD_get_buffer_size_out (SWVoiceOut *sw);
120void AUD_set_active_out (SWVoiceOut *sw, int on);
121int  AUD_is_active_out (SWVoiceOut *sw);
122
123void     AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);
124uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts);
125
126SWVoiceIn *AUD_open_in (
127    QEMUSoundCard *card,
128    SWVoiceIn *sw,
129    const char *name,
130    void *callback_opaque,
131    audio_callback_fn_t callback_fn,
132    audsettings_t *settings
133    );
134
135void AUD_close_in (QEMUSoundCard *card, SWVoiceIn *sw);
136int  AUD_read (SWVoiceIn *sw, void *pcm_buf, int size);
137void AUD_set_active_in (SWVoiceIn *sw, int on);
138int  AUD_is_active_in (SWVoiceIn *sw);
139
140void     AUD_init_time_stamp_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts);
141uint64_t AUD_get_elapsed_usec_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts);
142
143static inline void *advance (void *p, int incr)
144{
145    uint8_t *d = p;
146    return (d + incr);
147}
148
149uint32_t popcount (uint32_t u);
150uint32_t lsbindex (uint32_t u);
151
152#ifdef __GNUC__
153#define audio_MIN(a, b) ( __extension__ ({      \
154    __typeof (a) ta = a;                        \
155    __typeof (b) tb = b;                        \
156    ((ta)>(tb)?(tb):(ta));                      \
157}))
158
159#define audio_MAX(a, b) ( __extension__ ({      \
160    __typeof (a) ta = a;                        \
161    __typeof (b) tb = b;                        \
162    ((ta)<(tb)?(tb):(ta));                      \
163}))
164#else
165#define audio_MIN(a, b) ((a)>(b)?(b):(a))
166#define audio_MAX(a, b) ((a)<(b)?(b):(a))
167#endif
168
169#endif  /* audio.h */
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