aboutsummaryrefslogtreecommitdiffstats
path: root/src/output_init.c
blob: 238ca80812043d06aef4ffc1654e94b9b206935c (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
/*
 * Copyright (C) 2003-2009 The Music Player Daemon Project
 * http://www.musicpd.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "output_control.h"
#include "output_api.h"
#include "output_internal.h"
#include "output_list.h"
#include "audio_parser.h"
#include "mixer_control.h"
#include "filter_plugin.h"
#include "filter_registry.h"
#include "filter/chain_filter_plugin.h"

#include <glib.h>

#include <assert.h>

#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "output"

#define AUDIO_OUTPUT_TYPE	"type"
#define AUDIO_OUTPUT_NAME	"name"
#define AUDIO_OUTPUT_FORMAT	"format"

static const struct audio_output_plugin *
audio_output_detect(GError **error)
{
	const struct audio_output_plugin *plugin;
	unsigned i;

	g_warning("Attempt to detect audio output device");

	audio_output_plugins_for_each(plugin, i) {
		if (plugin->test_default_device == NULL)
			continue;

		g_warning("Attempting to detect a %s audio device",
			  plugin->name);
		if (ao_plugin_test_default_device(plugin))
			return plugin;
	}

	g_set_error(error, audio_output_quark(), 0,
		    "Unable to detect an audio device");
	return NULL;
}

static struct mixer *
audio_output_load_mixer(const struct config_param *param,
			const struct mixer_plugin *plugin)
{
	if (!config_get_block_bool(param, "mixer_enabled", true))
		return NULL;

	if (plugin == NULL)
		return NULL;

	return mixer_new(plugin, param);
}

bool
audio_output_init(struct audio_output *ao, const struct config_param *param,
		  GError **error)
{
	const struct audio_output_plugin *plugin = NULL;

	if (param) {
		const char *type = NULL;
		const char *format;

		type = config_get_block_string(param, AUDIO_OUTPUT_TYPE, NULL);
		if (type == NULL) {
			g_set_error(error, audio_output_quark(), 0,
				    "Missing \"type\" configuration");
			return false;
		}

		plugin = audio_output_plugin_get(type);
		if (plugin == NULL) {
			g_set_error(error, audio_output_quark(), 0,
				    "No such audio output plugin: %s",
				    type);
			return false;
		}

		ao->name = config_get_block_string(param, AUDIO_OUTPUT_NAME,
						   NULL);
		if (ao->name == NULL) {
			g_set_error(error, audio_output_quark(), 0,
				    "Missing \"name\" configuration");
			return false;
		}

		format = config_get_block_string(param, AUDIO_OUTPUT_FORMAT,
						 NULL);
		ao->config_audio_format = format != NULL;
		if (format != NULL) {
			bool success =
				audio_format_parse(&ao->out_audio_format,
						   format, error);
			if (!success)
				return false;
		}
	} else {
		g_warning("No \"%s\" defined in config file\n",
			  CONF_AUDIO_OUTPUT);

		plugin = audio_output_detect(error);
		if (plugin == NULL)
			return false;

		g_message("Successfully detected a %s audio device",
			  plugin->name);

		ao->name = "default detected output";
		ao->config_audio_format = false;
	}

	ao->plugin = plugin;
	ao->enabled = config_get_block_bool(param, "enabled", true);
	ao->open = false;
	ao->fail_timer = NULL;

	/* set up the filter chain */

	ao->filter = filter_chain_new();
	assert(ao->filter != NULL);

	ao->convert_filter = filter_new(&convert_filter_plugin, NULL, NULL);
	assert(ao->convert_filter != NULL);

	filter_chain_append(ao->filter, ao->convert_filter);

	ao->thread = NULL;
	notify_init(&ao->notify);
	ao->command = AO_COMMAND_NONE;
	ao->mutex = g_mutex_new();

	ao->data = ao_plugin_init(plugin,
				  ao->config_audio_format
				  ? &ao->out_audio_format : NULL,
				  param, error);
	if (ao->data == NULL)
		return false;

	ao->mixer = audio_output_load_mixer(param, plugin->mixer_plugin);

	return true;
}