aboutsummaryrefslogtreecommitdiff
path: root/audio/audio_int.h
blob: 2d079d00a2596e6bce20e1f52abf01a88c4e0012 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
/*
 * QEMU Audio subsystem header
 *
 * Copyright (c) 2003-2005 Vassili Karpov (malc)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#ifndef QEMU_AUDIO_INT_H
#define QEMU_AUDIO_INT_H

#ifdef CONFIG_AUDIO_COREAUDIO
#define FLOAT_MIXENG
/* #define RECIPROCAL */
#endif
#include "mixeng.h"

#ifdef CONFIG_GIO
#include <gio/gio.h>
#endif

struct audio_pcm_ops;

struct audio_callback {
    void *opaque;
    audio_callback_fn fn;
};

struct audio_pcm_info {
    int bits;
    bool is_signed;
    bool is_float;
    int freq;
    int nchannels;
    int bytes_per_frame;
    int bytes_per_second;
    int swap_endianness;
};

typedef struct AudioState AudioState;
typedef struct SWVoiceCap SWVoiceCap;

typedef struct STSampleBuffer {
    size_t pos, size;
    st_sample *buffer;
} STSampleBuffer;

typedef struct HWVoiceOut {
    AudioState *s;
    int enabled;
    int poll_mode;
    int pending_disable;
    struct audio_pcm_info info;

    f_sample *clip;
    uint64_t ts_helper;

    STSampleBuffer mix_buf;
    void *buf_emul;
    size_t pos_emul, pending_emul, size_emul;

    size_t samples;
    QLIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head;
    QLIST_HEAD (sw_cap_listhead, SWVoiceCap) cap_head;
    struct audio_pcm_ops *pcm_ops;
    QLIST_ENTRY (HWVoiceOut) entries;
} HWVoiceOut;

typedef struct HWVoiceIn {
    AudioState *s;
    int enabled;
    int poll_mode;
    struct audio_pcm_info info;

    t_sample *conv;

    size_t total_samples_captured;
    uint64_t ts_helper;

    STSampleBuffer conv_buf;
    void *buf_emul;
    size_t pos_emul, pending_emul, size_emul;

    size_t samples;
    QLIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head;
    struct audio_pcm_ops *pcm_ops;
    QLIST_ENTRY (HWVoiceIn) entries;
} HWVoiceIn;

struct SWVoiceOut {
    QEMUSoundCard *card;
    AudioState *s;
    struct audio_pcm_info info;
    t_sample *conv;
    STSampleBuffer resample_buf;
    void *rate;
    size_t total_hw_samples_mixed;
    int active;
    int empty;
    HWVoiceOut *hw;
    char *name;
    struct mixeng_volume vol;
    struct audio_callback callback;
    QLIST_ENTRY (SWVoiceOut) entries;
};

struct SWVoiceIn {
    QEMUSoundCard *card;
    AudioState *s;
    int active;
    struct audio_pcm_info info;
    void *rate;
    size_t total_hw_samples_acquired;
    STSampleBuffer resample_buf;
    f_sample *clip;
    HWVoiceIn *hw;
    char *name;
    struct mixeng_volume vol;
    struct audio_callback callback;
    QLIST_ENTRY (SWVoiceIn) entries;
};

typedef struct audio_driver audio_driver;
struct audio_driver {
    const char *name;
    const char *descr;
    void *(*init) (Audiodev *, Error **);
    void (*fini) (void *);
#ifdef CONFIG_GIO
    void (*set_dbus_server) (AudioState *s, GDBusObjectManagerServer *manager, bool p2p);
#endif
    struct audio_pcm_ops *pcm_ops;
    int max_voices_out;
    int max_voices_in;
    size_t voice_size_out;
    size_t voice_size_in;
    QLIST_ENTRY(audio_driver) next;
};

struct audio_pcm_ops {
    int    (*init_out)(HWVoiceOut *hw, audsettings *as, void *drv_opaque);
    void   (*fini_out)(HWVoiceOut *hw);
    size_t (*write)   (HWVoiceOut *hw, void *buf, size_t size);
    void   (*run_buffer_out)(HWVoiceOut *hw);
    /*
     * Get the free output buffer size. This is an upper limit. The size
     * returned by function get_buffer_out may be smaller.
     */
    size_t (*buffer_get_free)(HWVoiceOut *hw);
    /*
     * get a buffer that after later can be passed to put_buffer_out; optional
     * returns the buffer, and writes it's size to size (in bytes)
     */
    void  *(*get_buffer_out)(HWVoiceOut *hw, size_t *size);
    /*
     * put back the buffer returned by get_buffer_out; optional
     * buf must be equal the pointer returned by get_buffer_out,
     * size may be smaller
     */
    size_t (*put_buffer_out)(HWVoiceOut *hw, void *buf, size_t size);
    void   (*enable_out)(HWVoiceOut *hw, bool enable);
    void   (*volume_out)(HWVoiceOut *hw, Volume *vol);

    int    (*init_in) (HWVoiceIn *hw, audsettings *as, void *drv_opaque);
    void   (*fini_in) (HWVoiceIn *hw);
    size_t (*read)    (HWVoiceIn *hw, void *buf, size_t size);
    void   (*run_buffer_in)(HWVoiceIn *hw);
    void  *(*get_buffer_in)(HWVoiceIn *hw, size_t *size);
    void   (*put_buffer_in)(HWVoiceIn *hw, void *buf, size_t size);
    void   (*enable_in)(HWVoiceIn *hw, bool enable);
    void   (*volume_in)(HWVoiceIn *hw, Volume *vol);
};

void audio_generic_run_buffer_in(HWVoiceIn *hw);
void *audio_generic_get_buffer_in(HWVoiceIn *hw, size_t *size);
void audio_generic_put_buffer_in(HWVoiceIn *hw, void *buf, size_t size);
void audio_generic_run_buffer_out(HWVoiceOut *hw);
size_t audio_generic_buffer_get_free(HWVoiceOut *hw);
void *audio_generic_get_buffer_out(HWVoiceOut *hw, size_t *size);
size_t audio_generic_put_buffer_out(HWVoiceOut *hw, void *buf, size_t size);
size_t audio_generic_write(HWVoiceOut *hw, void *buf, size_t size);
size_t audio_generic_read(HWVoiceIn *hw, void *buf, size_t size);

struct capture_callback {
    struct audio_capture_ops ops;
    void *opaque;
    QLIST_ENTRY (capture_callback) entries;
};

struct CaptureVoiceOut {
    HWVoiceOut hw;
    void *buf;
    QLIST_HEAD (cb_listhead, capture_callback) cb_head;
    QLIST_ENTRY (CaptureVoiceOut) entries;
};

struct SWVoiceCap {
    SWVoiceOut sw;
    CaptureVoiceOut *cap;
    QLIST_ENTRY (SWVoiceCap) entries;
};

typedef struct AudioState {
    struct audio_driver *drv;
    Audiodev *dev;
    void *drv_opaque;

    QEMUTimer *ts;
    QLIST_HEAD (card_listhead, QEMUSoundCard) card_head;
    QLIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in;
    QLIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out;
    QLIST_HEAD (cap_listhead, CaptureVoiceOut) cap_head;
    int nb_hw_voices_out;
    int nb_hw_voices_in;
    int vm_running;
    int64_t period_ticks;

    bool timer_running;
    uint64_t timer_last;

    QTAILQ_ENTRY(AudioState) list;
} AudioState;

extern const struct mixeng_volume nominal_volume;

extern const char *audio_prio_list[];

void audio_driver_register(audio_driver *drv);

void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as);
void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);

int audio_bug (const char *funcname, int cond);

void audio_run(AudioState *s, const char *msg);

const char *audio_application_name(void);

typedef struct RateCtl {
    int64_t start_ticks;
    int64_t bytes_sent;
} RateCtl;

void audio_rate_start(RateCtl *rate);
size_t audio_rate_peek_bytes(RateCtl *rate, struct audio_pcm_info *info);
void audio_rate_add_bytes(RateCtl *rate, size_t bytes_used);
size_t audio_rate_get_bytes(RateCtl *rate, struct audio_pcm_info *info,
                            size_t bytes_avail);

static inline size_t audio_ring_dist(size_t dst, size_t src, size_t len)
{
    return (dst >= src) ? (dst - src) : (len - src + dst);
}

/**
 * audio_ring_posb() - returns new position in ringbuffer in backward
 * direction at given distance
 *
 * @pos: current position in ringbuffer
 * @dist: distance in ringbuffer to walk in reverse direction
 * @len: size of ringbuffer
 */
static inline size_t audio_ring_posb(size_t pos, size_t dist, size_t len)
{
    return pos >= dist ? pos - dist : len - dist + pos;
}

#define dolog(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__)

#ifdef DEBUG
#define ldebug(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__)
#else
#define ldebug(fmt, ...) (void)0
#endif

typedef struct AudiodevListEntry {
    Audiodev *dev;
    QSIMPLEQ_ENTRY(AudiodevListEntry) next;
} AudiodevListEntry;

typedef QSIMPLEQ_HEAD(, AudiodevListEntry) AudiodevListHead;

void audio_create_pdos(Audiodev *dev);
AudiodevPerDirectionOptions *audio_get_pdo_in(Audiodev *dev);
AudiodevPerDirectionOptions *audio_get_pdo_out(Audiodev *dev);

#endif /* QEMU_AUDIO_INT_H */