aboutsummaryrefslogtreecommitdiffstats
path: root/src/modules/mixer/lib/emix.c
blob: 058e4fb1aee5f089d523491e45074b98346cbe48 (plain) (blame)
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
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
#include <Ecore.h>
#include <Eina.h>

#include "config.h"
#include "emix.h"

#ifdef HAVE_PULSE
E_API Emix_Backend *emix_backend_pulse_get(void);
E_API const char    *emix_backend_pulse_name;
#endif
#ifdef HAVE_ALSA
E_API Emix_Backend *emix_backend_alsa_get(void);
E_API const char    *emix_backend_alsa_name;
#endif

static int _log_domain;

#define CRIT(...)     EINA_LOG_DOM_CRIT(_log_domain, __VA_ARGS__)
#define ERR(...)      EINA_LOG_DOM_ERR(_log_domain, __VA_ARGS__)
#define WRN(...)      EINA_LOG_DOM_WARN(_log_domain, __VA_ARGS__)
#define INF(...)      EINA_LOG_DOM_INFO(_log_domain, __VA_ARGS__)
#define DBG(...)      EINA_LOG_DOM_DBG(_log_domain, __VA_ARGS__)

struct Callback_Data
{
   Emix_Event_Cb cb;
   const void *data;
};

typedef struct Context
{
   /* Valid backends *.so */
   Eina_Array *backends;
   Eina_List *backends_names;
   Eina_List *callbacks;

   Emix_Backend *loaded;
} Context;

typedef struct _Back
{
   Emix_Backend *(*backend_get) (void);
   const char     *backend_name;
} Back;

static int _init_count = 0;
static Context *ctx = NULL;

static void
_events_cb(void *data EINA_UNUSED, enum Emix_Event event, void *event_info)
{
   Eina_List *l;
   struct Callback_Data *callback;

   EINA_LIST_FOREACH(ctx->callbacks, l, callback)
      callback->cb((void *)callback->data, event, event_info);
}

Eina_Bool
emix_init(void)
{
   Back *back;

   if (_init_count > 0)
      goto end;

   if (!eina_init())
     {
        fprintf(stderr, "Could not init eina\n");
        return EINA_FALSE;
     }

   _log_domain = eina_log_domain_register("emix", NULL);
   if (_log_domain < 0)
     {
        EINA_LOG_CRIT("Could not create log domain 'emix'");
        goto err_log;
     }

   if (!ecore_init())
     {
        CRIT("Could not init ecore");
        goto err_ecore;
     }

   ctx = calloc(1, sizeof(Context));
   if (!ctx)
     {
        ERR("Could not create Epulse Context");
        goto err_ecore;
     }
   ctx->backends = eina_array_new(2);
#ifdef HAVE_PULSE
   back = calloc(1, sizeof(Back));
   if (back)
     {
        back->backend_get = emix_backend_pulse_get;
        back->backend_name = emix_backend_pulse_name;
        eina_array_push(ctx->backends, back);
        ctx->backends_names = eina_list_append(ctx->backends_names,
                                               back->backend_name);
     }
#endif
#ifdef HAVE_ALSA
   back = calloc(1, sizeof(Back));
   if (back)
     {
        back->backend_get = emix_backend_alsa_get;
        back->backend_name = emix_backend_alsa_name;
        eina_array_push(ctx->backends, back);
        ctx->backends_names = eina_list_append(ctx->backends_names,
                                               back->backend_name);
     }
#endif

   if (ctx->backends == NULL)
     {
        ERR("Could not find any valid backend");
        goto err;
     }

 end:
   _init_count++;
   return EINA_TRUE;
 err:
   free(ctx);
   ctx = NULL;
 err_ecore:
   eina_log_domain_unregister(_log_domain);
   _log_domain = -1;
 err_log:
   eina_shutdown();
   return EINA_FALSE;
}

void
emix_shutdown()
{
   unsigned int i;
   Eina_Array_Iterator iterator;
   Back *back;

   if (_init_count == 0)
      return;

   _init_count--;
   if (_init_count > 0)
      return;

   if (ctx->loaded && ctx->loaded->ebackend_shutdown)
      ctx->loaded->ebackend_shutdown();

   eina_list_free(ctx->backends_names);
   EINA_ARRAY_ITER_NEXT(ctx->backends, i, back, iterator)
     {
        free(back);
     }
   eina_array_free(ctx->backends);
   free(ctx);
   ctx = NULL;

   ecore_shutdown();
   eina_shutdown();
}

const Eina_List*
emix_backends_available(void)
{
   EINA_SAFETY_ON_NULL_RETURN_VAL(ctx, NULL);
   return ctx->backends_names;
}

int
emix_max_volume_get(void)
{
   EINA_SAFETY_ON_FALSE_RETURN_VAL((ctx && ctx->loaded &&
                                    ctx->loaded->ebackend_max_volume_get),
                                   0);
  return ctx->loaded->ebackend_max_volume_get();
}

Eina_Bool
emix_backend_set(const char *backend)
{
   Eina_List *l;
   const char *name;
   unsigned int i = 0;
   Back *back;

   EINA_SAFETY_ON_FALSE_RETURN_VAL((ctx && backend), EINA_FALSE);
   if (ctx->loaded && ctx->loaded->ebackend_shutdown)
     {
        ctx->loaded->ebackend_shutdown();
        ctx->loaded = NULL;
     }

   EINA_LIST_FOREACH(ctx->backends_names, l, name)
     {
        if (!strncmp(name, backend, strlen(name)))
          break;
        i++;
     }

   if (i == eina_list_count(ctx->backends_names))
     {
        CRIT("Requested backend not found (%s)", backend);
        return EINA_FALSE;
     }

   back = eina_array_data_get(ctx->backends, i);
   ctx->loaded = back->backend_get();

   if (!ctx->loaded || !ctx->loaded->ebackend_init)
      return EINA_FALSE;

   return ctx->loaded->ebackend_init(_events_cb, NULL);
}

const Eina_List*
emix_sinks_get(void)
{
   EINA_SAFETY_ON_FALSE_RETURN_VAL((ctx && ctx->loaded &&
                                    ctx->loaded->ebackend_sinks_get),
                                    NULL);
   return ctx->loaded->ebackend_sinks_get();
}

Eina_Bool
emix_sink_default_support(void)
{
   EINA_SAFETY_ON_FALSE_RETURN_VAL((ctx && ctx->loaded &&
                                    ctx->loaded->ebackend_sink_default_support),
                                   EINA_FALSE);
   return ctx->loaded->ebackend_sink_default_support();
}

const Emix_Sink*
emix_sink_default_get(void)
{
   EINA_SAFETY_ON_FALSE_RETURN_VAL((ctx && ctx->loaded &&
                                    ctx->loaded->ebackend_sink_default_get),
                                   NULL);
   return ctx->loaded->ebackend_sink_default_get();
}

void
emix_sink_default_set(Emix_Sink *sink)
{
   EINA_SAFETY_ON_FALSE_RETURN((ctx && ctx->loaded &&
                                ctx->loaded->ebackend_sink_default_set &&
                                sink));

   ctx->loaded->ebackend_sink_default_set(sink);
}

Eina_Bool
emix_sink_port_set(Emix_Sink *sink, Emix_Port *port)
{
   EINA_SAFETY_ON_FALSE_RETURN_VAL((ctx && ctx->loaded &&
                                    ctx->loaded->ebackend_sink_port_set &&
                                    sink && port), EINA_FALSE);

   return ctx->loaded->ebackend_sink_port_set(sink, port);
}

void
emix_sink_mute_set(Emix_Sink *sink, Eina_Bool mute)
{
   EINA_SAFETY_ON_FALSE_RETURN((ctx && ctx->loaded &&
                                ctx->loaded->ebackend_sink_mute_set &&
                                sink));

   ctx->loaded->ebackend_sink_mute_set(sink, mute);
}

void
emix_sink_volume_set(Emix_Sink *sink, Emix_Volume volume)
{
   EINA_SAFETY_ON_FALSE_RETURN((ctx && ctx->loaded &&
                                ctx->loaded->ebackend_sink_volume_set &&
                                sink));

   sink->set_volume.channel_count = volume.channel_count;
   sink->set_volume.volumes = calloc(volume.channel_count, sizeof(int));
   for (unsigned int i = 0; i < volume.channel_count; i++)
     {
        sink->set_volume.volumes[i] = volume.volumes[i];
     }

   ctx->loaded->ebackend_sink_volume_set(sink, volume);
}

Eina_Bool
emix_sink_change_support(void)
{
   EINA_SAFETY_ON_FALSE_RETURN_VAL((ctx && ctx->loaded &&
                                    ctx->loaded->ebackend_sink_change_support),
                                    EINA_FALSE);
   return ctx->loaded->ebackend_sink_change_support();
}

const Eina_List*
emix_sink_inputs_get(void)
{
   EINA_SAFETY_ON_FALSE_RETURN_VAL((ctx && ctx->loaded &&
                                    ctx->loaded->ebackend_sink_inputs_get),
                                    NULL);
   return ctx->loaded->ebackend_sink_inputs_get();
}

void
emix_sink_input_mute_set(Emix_Sink_Input *input, Eina_Bool mute)
{
   EINA_SAFETY_ON_FALSE_RETURN((ctx && ctx->loaded &&
                                ctx->loaded->ebackend_sink_input_mute_set &&
                                input));

   ctx->loaded->ebackend_sink_input_mute_set(input, mute);
}

void
emix_sink_input_volume_set(Emix_Sink_Input *input, Emix_Volume volume)
{
   EINA_SAFETY_ON_FALSE_RETURN((ctx && ctx->loaded &&
                                ctx->loaded->ebackend_sink_input_volume_set &&
                                input));

   ctx->loaded->ebackend_sink_input_volume_set(input, volume);
}

void
emix_sink_input_sink_change(Emix_Sink_Input *input, Emix_Sink *sink)
{
   EINA_SAFETY_ON_FALSE_RETURN((ctx && ctx->loaded &&
                                ctx->loaded->ebackend_sink_input_sink_change &&
                                input && sink));

   ctx->loaded->ebackend_sink_input_sink_change(input, sink);
}

const Eina_List*
emix_sources_get(void)
{
   EINA_SAFETY_ON_FALSE_RETURN_VAL((ctx && ctx->loaded &&
                                    ctx->loaded->ebackend_sources_get), NULL);

   return ctx->loaded->ebackend_sources_get();
}

void
emix_source_mute_set(Emix_Source *source, Eina_Bool mute)
{
   EINA_SAFETY_ON_FALSE_RETURN((ctx && ctx->loaded &&
                                ctx->loaded->ebackend_source_mute_set &&
                                source));

   ctx->loaded->ebackend_source_mute_set(source, mute);
}

void
emix_source_volume_set(Emix_Source *source, Emix_Volume volume)
{
   EINA_SAFETY_ON_FALSE_RETURN((ctx && ctx->loaded &&
                                ctx->loaded->ebackend_source_volume_set &&
                                source));

   ctx->loaded->ebackend_source_volume_set(source, volume);
}

Evas_Object *
emix_advanced_options_add(Evas_Object *parent)
{
   EINA_SAFETY_ON_FALSE_RETURN_VAL((ctx && ctx->loaded && parent &&
                             ctx->loaded->ebackend_advanced_options_add), NULL);

   return ctx->loaded->ebackend_advanced_options_add(parent);
}

Eina_Bool
emix_event_callback_add(Emix_Event_Cb cb, const void *data)
{
   struct Callback_Data *callback;
   EINA_SAFETY_ON_FALSE_RETURN_VAL((ctx && cb), EINA_FALSE);

   callback = calloc(1, sizeof(*callback));
   callback->cb = cb;
   callback->data = data;

   ctx->callbacks = eina_list_append(ctx->callbacks, callback);
   return EINA_TRUE;
}

Eina_Bool
emix_event_callback_del(Emix_Event_Cb cb)
{
   struct Callback_Data *callback;
   Eina_List *l;
   EINA_SAFETY_ON_FALSE_RETURN_VAL((ctx && cb), EINA_FALSE);

   EINA_LIST_FOREACH(ctx->callbacks, l, callback)
     {
        if (callback->cb == cb)
          {
             ctx->callbacks = eina_list_remove_list(ctx->callbacks, l);
             free(callback);
             return EINA_TRUE;
          }
     }

   return EINA_FALSE;
}