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
|
/*
* 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 "mixer_type.h"
#include "mixer_list.h"
#include "mixer/software_mixer_plugin.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;
}
/**
* Determines the mixer type which should be used for the specified
* configuration block.
*
* This handles the deprecated options mixer_type (global) and
* mixer_enabled, if the mixer_type setting is not configured.
*/
static enum mixer_type
audio_output_mixer_type(const struct config_param *param)
{
/* read the local "mixer_type" setting */
const char *p = config_get_block_string(param, "mixer_type", NULL);
if (p != NULL)
return mixer_type_parse(p);
/* try the local "mixer_enabled" setting next (deprecated) */
if (!config_get_block_bool(param, "mixer_enabled", true))
return MIXER_TYPE_NONE;
/* fall back to the global "mixer_type" setting (also
deprecated) */
return mixer_type_parse(config_get_string("mixer_type", "hardware"));
}
static struct mixer *
audio_output_load_mixer(void *ao, const struct config_param *param,
const struct mixer_plugin *plugin,
struct filter *filter_chain,
GError **error_r)
{
struct mixer *mixer;
switch (audio_output_mixer_type(param)) {
case MIXER_TYPE_NONE:
case MIXER_TYPE_UNKNOWN:
return NULL;
case MIXER_TYPE_HARDWARE:
if (plugin == NULL)
return NULL;
return mixer_new(plugin, ao, param, error_r);
case MIXER_TYPE_SOFTWARE:
mixer = mixer_new(&software_mixer_plugin, NULL, NULL, NULL);
assert(mixer != NULL);
filter_chain_append(filter_chain,
software_mixer_get_filter(mixer));
return mixer;
}
assert(false);
return NULL;
}
bool
audio_output_init(struct audio_output *ao, const struct config_param *param,
GError **error_r)
{
const struct audio_output_plugin *plugin = NULL;
GError *error = NULL;
if (param) {
const char *p;
p = config_get_block_string(param, AUDIO_OUTPUT_TYPE, NULL);
if (p == NULL) {
g_set_error(error_r, audio_output_quark(), 0,
"Missing \"type\" configuration");
return false;
}
plugin = audio_output_plugin_get(p);
if (plugin == NULL) {
g_set_error(error_r, audio_output_quark(), 0,
"No such audio output plugin: %s", p);
return false;
}
ao->name = config_get_block_string(param, AUDIO_OUTPUT_NAME,
NULL);
if (ao->name == NULL) {
g_set_error(error_r, audio_output_quark(), 0,
"Missing \"name\" configuration");
return false;
}
p = config_get_block_string(param, AUDIO_OUTPUT_FORMAT,
NULL);
if (p != NULL) {
bool success =
audio_format_parse(&ao->config_audio_format,
p, true, error_r);
if (!success)
return false;
} else
audio_format_clear(&ao->config_audio_format);
} else {
g_warning("No \"%s\" defined in config file\n",
CONF_AUDIO_OUTPUT);
plugin = audio_output_detect(error_r);
if (plugin == NULL)
return false;
g_message("Successfully detected a %s audio device",
plugin->name);
ao->name = "default detected output";
audio_format_clear(&ao->config_audio_format);
}
ao->plugin = plugin;
ao->enabled = config_get_block_bool(param, "enabled", true);
ao->open = false;
ao->pause = false;
ao->fail_timer = NULL;
/* set up the filter chain */
ao->filter = filter_chain_new();
assert(ao->filter != NULL);
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,
param, error_r);
if (ao->data == NULL)
return false;
ao->mixer = audio_output_load_mixer(ao->data, param,
plugin->mixer_plugin,
ao->filter, &error);
if (ao->mixer == NULL && error != NULL) {
g_warning("Failed to initialize hardware mixer for '%s': %s",
ao->name, error->message);
g_error_free(error);
}
/* the "convert" filter must be the last one in the chain */
ao->convert_filter = filter_new(&convert_filter_plugin, NULL, NULL);
assert(ao->convert_filter != NULL);
filter_chain_append(ao->filter, ao->convert_filter);
/* done */
return true;
}
|
