summaryrefslogtreecommitdiffstats
path: root/app/pac.c
blob: 83b46047ff9cef3bf476f8c298d0b2c7a1e55d90 (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
/*
 * Copyright (C) 2016 Konsulko Group
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <limits.h>
#include <assert.h>

#include <pulse/pulseaudio.h>
#include <sys/queue.h>

#include "pacontrolmodel.h"
#include "pac.h"

/* FIXME: move these into a pac context */
static pa_threaded_mainloop* m;
TAILQ_HEAD(pac_cstateq, pac_cstate);
static struct pac_cstateq cstateq;

static void add_one_cstate(int type, int index, const pa_cvolume *cvolume)
{
	struct pac_cstate *cstate;
	int i;

	cstate = pa_xnew(struct pac_cstate, 1);
	cstate->type = type;
	cstate->index = index;
	cstate->cvolume.channels = cvolume->channels;
	for (i = 0; i < cvolume->channels; i++)
		cstate->cvolume.values[i] = cvolume->values[i];

	TAILQ_INSERT_TAIL(&cstateq, cstate, tailq);
}

static void get_source_list_cb(pa_context *c,
		const pa_source_info *i,
		int eol,
		void *data)
{
	int chan;

	if (eol < 0) {
		fprintf(stderr, "get source list: %s\n",
				pa_strerror(pa_context_errno(c)));

		pa_threaded_mainloop_stop(m);
		return;
	}

	if (!eol) {
		assert(i);
		add_one_cstate(C_SOURCE, i->index, &i->volume);
		for (chan = 0; chan < i->channel_map.channels; chan++) {
			add_one_control(data, i->index, i->description,
					C_SOURCE, chan,
					channel_position_string[i->channel_map.map[chan]],
					i->volume.values[chan]);
		}
	}
}

static void get_sink_list_cb(pa_context *c,
		const pa_sink_info *i,
		int eol,
		void *data)
{
	int chan;

	if(eol < 0) {
		fprintf(stderr, "get sink list: %s\n",
				pa_strerror(pa_context_errno(c)));

		pa_threaded_mainloop_stop(m);
		return;
	}

	if(!eol) {
		assert(i);
		add_one_cstate(C_SINK, i->index, &i->volume);
		for (chan = 0; chan < i->channel_map.channels; chan++) {
			add_one_control(data, i->index, i->description,
					C_SINK, chan,
					channel_position_string[i->channel_map.map[chan]],
					i->volume.values[chan]);
		}
	}
}

static void context_state_cb(pa_context *c, void *data) {
	pa_operation *o;

	assert(c);
	switch (pa_context_get_state(c)) {
		case PA_CONTEXT_CONNECTING:
		case PA_CONTEXT_AUTHORIZING:
		case PA_CONTEXT_SETTING_NAME:
			break;
		case PA_CONTEXT_READY:
			/* Fetch the controls of interest */
			if (!(o = pa_context_get_source_info_list(c, get_source_list_cb, data))) {
				fprintf(stderr, "get source info list: %s\n",
					pa_strerror(pa_context_errno(c)));
				return;
			}
			pa_operation_unref(o);
			if (!(o = pa_context_get_sink_info_list(c, get_sink_list_cb, data))) {
				fprintf(stderr, "get sink info list: %s\n",
					pa_strerror(pa_context_errno(c)));
				return;
			}
			break;
		case PA_CONTEXT_TERMINATED:
			pa_threaded_mainloop_stop(m);
			break;
		case PA_CONTEXT_FAILED:
		default:
			fprintf(stderr, "PA connection failed: %s\n",
					pa_strerror(pa_context_errno(c)));
			pa_threaded_mainloop_stop(m);
	}
}

static void pac_set_source_volume_cb(pa_context *c, int success, void *userdata __attribute__((unused))) {
	assert(c);
	if (!success)
		fprintf(stderr, "Set source volume: %s\n",
				pa_strerror(pa_context_errno(c)));
}

static void pac_set_sink_volume_cb(pa_context *c, int success, void *userdata __attribute__((unused))) {
	assert(c);
	if (!success)
		fprintf(stderr, "Set source volume: %s\n",
				pa_strerror(pa_context_errno(c)));
}

void pac_set_volume(pa_context *c, uint32_t type, uint32_t idx, uint32_t channel, uint32_t volume)
{
	pa_operation *o;
	struct pac_cstate *cstate;

	TAILQ_FOREACH(cstate, &cstateq, tailq)
		if (cstate->index == idx)
			break;
	cstate->cvolume.values[channel] = volume;

	if (type == C_SOURCE) {
		if (!(o = pa_context_set_source_volume_by_index(c, idx, &cstate->cvolume, pac_set_source_volume_cb, NULL))) {
			fprintf(stderr, "set source #%d channel #%d volume: %s\n",
				idx, channel, pa_strerror(pa_context_errno(c)));
			return;
		}
		pa_operation_unref(o);
	} else if (type == C_SINK) {
		if (!(o = pa_context_set_sink_volume_by_index(c, idx, &cstate->cvolume, pac_set_sink_volume_cb, NULL))) {
			fprintf(stderr, "set sink #%d channel #%d volume: %s\n",
				idx, channel, pa_strerror(pa_context_errno(c)));
			return;
		}
		pa_operation_unref(o);
	}
}

pa_context *pac_init(void *this, const char *name) {
	pa_context *c;
	pa_mainloop_api *mapi;
	char *server = NULL;
	char *client = pa_xstrdup(name);

	TAILQ_INIT(&cstateq);

	if (!(m = pa_threaded_mainloop_new())) {
		fprintf(stderr, "pa_mainloop_new() failed.\n");
		return NULL;
	}

	pa_threaded_mainloop_set_name(m, "pa_mainloop");
	mapi = pa_threaded_mainloop_get_api(m);

	if (!(c = pa_context_new(mapi, client))) {
		fprintf(stderr, "pa_context_new() failed.\n");
		goto exit;
	}

	pa_context_set_state_callback(c, context_state_cb, this);
	if (pa_context_connect(c, server, 0, NULL) < 0) {
		fprintf(stderr, "pa_context_connect(): %s", pa_strerror(pa_context_errno(c)));
		goto exit;
	}

	if (pa_threaded_mainloop_start(m) < 0) {
		fprintf(stderr, "pa_mainloop_run() failed.\n");
		goto exit;
	}

	return c;

exit:
	if (c)
		pa_context_unref(c);

	if (m)
		pa_threaded_mainloop_free(m);

	pa_xfree(client);

	return NULL;
}