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
|
#include "mixer_api.h"
#include "conf.h"
#include <glib.h>
#include <pulse/volume.h>
#include <pulse/pulseaudio.h>
#include <string.h>
struct pulse_mixer {
struct mixer base;
char *server;
char *sink;
char *output_name;
uint32_t index;
bool online;
struct pa_context *context;
struct pa_threaded_mainloop *mainloop;
struct pa_cvolume *volume;
};
static void
sink_input_cb(G_GNUC_UNUSED pa_context *context, const pa_sink_input_info *i,
int eol, void *userdata)
{
struct pulse_mixer *pm = userdata;
if (eol) {
g_debug("eol error sink_input_cb");
return;
}
if (!i) {
g_debug("Sink input callback failure");
return;
}
g_debug("sink input cb %s, index %d ",i->name,i->index);
if(strcmp(i->name,pm->output_name)==0) {
pm->index=i->index;
pm->online=true;
*pm->volume=i->volume;
} else
g_debug("bad name");
}
static void
sink_input_vol(G_GNUC_UNUSED pa_context *context, const pa_sink_input_info *i,
int eol, void *userdata)
{
struct pulse_mixer *pm = userdata;
if (eol) {
g_debug("eol error sink_input_vol");
return;
}
if (!i) {
g_debug("Sink input callback failure");
return;
}
g_debug("sink input vol %s, index %d ", i->name, i->index);
*pm->volume=i->volume;
}
static void
subscribe_cb(G_GNUC_UNUSED pa_context *c, pa_subscription_event_type_t t,
uint32_t idx, void *userdata)
{
struct pulse_mixer *pm = userdata;
g_debug("pulse_mixer: subscribe call back");
switch (t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) {
case PA_SUBSCRIPTION_EVENT_SINK_INPUT:
if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) ==
PA_SUBSCRIPTION_EVENT_REMOVE)
pm->online =false;
else {
pa_operation *o;
if (!(o = pa_context_get_sink_input_info(pm->context, idx, sink_input_cb, pm))) {
g_debug("pulse_mixer: pa_context_get_sink_input_info() failed");
return;
}
pa_operation_unref(o);
}
break;
}
}
static void
context_state_cb(pa_context *context, void *userdata)
{
struct pulse_mixer *pm = userdata;
switch (pa_context_get_state(context)) {
case PA_CONTEXT_READY: {
pa_operation *o;
pa_context_set_subscribe_callback(context, subscribe_cb, pm);
if (!(o = pa_context_subscribe(context, (pa_subscription_mask_t)
(PA_SUBSCRIPTION_MASK_SINK_INPUT), NULL, NULL))) {
g_debug("pulse_mixer: pa_context_subscribe() failed");
return;
}
pa_operation_unref(o);
if (!(o = pa_context_get_sink_input_info_list(context, sink_input_cb, pm))) {
g_debug("pulse_mixer: pa_context_get_sink_input_info_list() failed");
return;
}
pa_operation_unref(o);
pa_threaded_mainloop_signal(pm->mainloop, 0);
break;
}
case PA_CONTEXT_UNCONNECTED:
case PA_CONTEXT_CONNECTING:
case PA_CONTEXT_AUTHORIZING:
case PA_CONTEXT_SETTING_NAME:
break;
case PA_CONTEXT_TERMINATED:
case PA_CONTEXT_FAILED:
pa_threaded_mainloop_signal(pm->mainloop, 0);
break;
}
}
static struct mixer *
pulse_mixer_init(const struct config_param *param)
{
struct pulse_mixer *pm = g_new(struct pulse_mixer,1);
mixer_init(&pm->base, &pulse_mixer);
pm->server = NULL;
pm->sink = NULL;
pm->context=NULL;
pm->mainloop=NULL;
pm->volume=NULL;
pm->output_name=NULL;
pm->index=0;
pm->online=false;
pm->volume = g_new(struct pa_cvolume,1);
pm->server = param != NULL
? config_dup_block_string(param, "server", NULL) : NULL;
pm->sink = param != NULL
? config_dup_block_string(param, "sink", NULL) : NULL;
pm->output_name = param != NULL
? config_dup_block_string(param, "name", NULL) : NULL;
g_debug("pulse_mixer: init");
if(!(pm->mainloop = pa_threaded_mainloop_new())) {
g_debug("pulse_mixer: failed mainloop");
g_free(pm);
return NULL;
}
if(!(pm->context = pa_context_new(pa_threaded_mainloop_get_api(pm->mainloop),
"Mixer mpd"))) {
g_debug("pulse_mixer: failed context");
g_free(pm);
return NULL;
}
pa_context_set_state_callback(pm->context, context_state_cb, pm);
if (pa_context_connect(pm->context, pm->server,
(pa_context_flags_t)0, NULL) < 0) {
g_debug("pulse_mixer: context server fail");
g_free(pm);
return NULL;
}
pa_threaded_mainloop_lock(pm->mainloop);
if (pa_threaded_mainloop_start(pm->mainloop) < 0) {
g_debug("pulse_mixer: error start mainloop");
g_free(pm);
return NULL;
}
pa_threaded_mainloop_wait(pm->mainloop);
if (pa_context_get_state(pm->context) != PA_CONTEXT_READY) {
g_debug("pulse_mixer: error context not ready");
g_free(pm);
return NULL;
}
pa_threaded_mainloop_unlock(pm->mainloop);
return &pm->base ;
}
static void
pulse_mixer_finish(struct mixer *data)
{
struct pulse_mixer *pm = (struct pulse_mixer *) data;
pm->context = NULL;
pm->mainloop = NULL;
pm->volume = NULL;
pm->online = false;
g_free(pm);
}
static bool
pulse_mixer_open(G_GNUC_UNUSED struct mixer *data)
{
g_debug("pulse mixer open");
return true;
}
static void
pulse_mixer_close(G_GNUC_UNUSED struct mixer *data)
{
return;
}
static int
pulse_mixer_get_volume(struct mixer *mixer)
{
struct pulse_mixer *pm=(struct pulse_mixer *) mixer;
int ret;
pa_operation *o;
g_debug("pulse_mixer: get_volume %s",
pm->online == TRUE ? "online" : "offline");
if(pm->online) {
if (!(o = pa_context_get_sink_input_info(pm->context, pm->index,
sink_input_vol, pm))) {
g_debug("pa_context_get_sink_input_info() failed");
return false;
}
pa_operation_unref(o);
ret = (int)((100*(pa_cvolume_avg(pm->volume)+1))/PA_VOLUME_NORM);
g_debug("pulse_mixer: volume %d", ret);
return ret;
}
return false;
}
static bool
pulse_mixer_set_volume(struct mixer *mixer, unsigned volume)
{
struct pulse_mixer *pm=(struct pulse_mixer *) mixer;
pa_operation *o;
if (pm->online) {
pa_cvolume_set(pm->volume, (pm->volume)->channels,
(pa_volume_t)(volume)*PA_VOLUME_NORM/100+0.5);
if (!(o = pa_context_set_sink_input_volume(pm->context, pm->index,
pm->volume, NULL, NULL))) {
g_debug("pulse_mixer: pa_context_set_sink_input_volume() failed");
return false;
}
pa_operation_unref(o);
}
return true;
}
const struct mixer_plugin pulse_mixer = {
.init = pulse_mixer_init,
.finish = pulse_mixer_finish,
.open = pulse_mixer_open,
.close = pulse_mixer_close,
.get_volume = pulse_mixer_get_volume,
.set_volume = pulse_mixer_set_volume,
};
|
