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
|
/*
* GStreamer pulseaudio plugin
*
* Copyright (c) 2004-2008 Lennart Poettering
*
* gst-pulse is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, or (at your option) any later version.
*
* gst-pulse 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with gst-pulse; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pulseutil.h"
#include <gst/audio/multichannel.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h> /* getpid on UNIX */
#endif
#ifdef HAVE_PROCESS_H
# include <process.h> /* getpid on win32 */
#endif
static const pa_channel_position_t gst_pos_to_pa[GST_AUDIO_CHANNEL_POSITION_NUM]
= {
[GST_AUDIO_CHANNEL_POSITION_FRONT_MONO] = PA_CHANNEL_POSITION_MONO,
[GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT] = PA_CHANNEL_POSITION_FRONT_LEFT,
[GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT] = PA_CHANNEL_POSITION_FRONT_RIGHT,
[GST_AUDIO_CHANNEL_POSITION_REAR_CENTER] = PA_CHANNEL_POSITION_REAR_CENTER,
[GST_AUDIO_CHANNEL_POSITION_REAR_LEFT] = PA_CHANNEL_POSITION_REAR_LEFT,
[GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT] = PA_CHANNEL_POSITION_REAR_RIGHT,
[GST_AUDIO_CHANNEL_POSITION_LFE] = PA_CHANNEL_POSITION_LFE,
[GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER] = PA_CHANNEL_POSITION_FRONT_CENTER,
[GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER] =
PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
[GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER] =
PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
[GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT] = PA_CHANNEL_POSITION_SIDE_LEFT,
[GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT] = PA_CHANNEL_POSITION_SIDE_RIGHT,
[GST_AUDIO_CHANNEL_POSITION_NONE] = PA_CHANNEL_POSITION_INVALID
};
/* All index are increased by one because PA_CHANNEL_POSITION_INVALID == -1 */
static const GstAudioChannelPosition
pa_to_gst_pos[GST_AUDIO_CHANNEL_POSITION_NUM]
= {
[PA_CHANNEL_POSITION_MONO + 1] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO,
[PA_CHANNEL_POSITION_FRONT_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
[PA_CHANNEL_POSITION_FRONT_RIGHT + 1] =
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
[PA_CHANNEL_POSITION_REAR_CENTER + 1] =
GST_AUDIO_CHANNEL_POSITION_REAR_CENTER,
[PA_CHANNEL_POSITION_REAR_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
[PA_CHANNEL_POSITION_REAR_RIGHT + 1] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
[PA_CHANNEL_POSITION_LFE + 1] = GST_AUDIO_CHANNEL_POSITION_LFE,
[PA_CHANNEL_POSITION_FRONT_CENTER + 1] =
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
[PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER + 1] =
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
[PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER + 1] =
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
[PA_CHANNEL_POSITION_SIDE_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
[PA_CHANNEL_POSITION_SIDE_RIGHT + 1] = GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
[PA_CHANNEL_POSITION_INVALID + 1] = GST_AUDIO_CHANNEL_POSITION_NONE,
};
gboolean
gst_pulse_fill_sample_spec (GstRingBufferSpec * spec, pa_sample_spec * ss)
{
if (spec->format == GST_MU_LAW && spec->width == 8)
ss->format = PA_SAMPLE_ULAW;
else if (spec->format == GST_A_LAW && spec->width == 8)
ss->format = PA_SAMPLE_ALAW;
else if (spec->format == GST_U8 && spec->width == 8)
ss->format = PA_SAMPLE_U8;
else if (spec->format == GST_S16_LE && spec->width == 16)
ss->format = PA_SAMPLE_S16LE;
else if (spec->format == GST_S16_BE && spec->width == 16)
ss->format = PA_SAMPLE_S16BE;
else if (spec->format == GST_FLOAT32_LE && spec->width == 32)
ss->format = PA_SAMPLE_FLOAT32LE;
else if (spec->format == GST_FLOAT32_BE && spec->width == 32)
ss->format = PA_SAMPLE_FLOAT32BE;
else if (spec->format == GST_S32_LE && spec->width == 32)
ss->format = PA_SAMPLE_S32LE;
else if (spec->format == GST_S32_BE && spec->width == 32)
ss->format = PA_SAMPLE_S32BE;
#ifdef HAVE_PULSE_0_9_15
else if (spec->format == GST_S24_3LE && spec->width == 24)
ss->format = PA_SAMPLE_S24LE;
else if (spec->format == GST_S24_3BE && spec->width == 24)
ss->format = PA_SAMPLE_S24BE;
else if (spec->format == GST_S24_LE && spec->width == 32)
ss->format = PA_SAMPLE_S24_32LE;
else if (spec->format == GST_S24_BE && spec->width == 32)
ss->format = PA_SAMPLE_S24_32BE;
#endif
else
return FALSE;
ss->channels = spec->channels;
ss->rate = spec->rate;
if (!pa_sample_spec_valid (ss))
return FALSE;
return TRUE;
}
gchar *
gst_pulse_client_name (void)
{
gchar buf[PATH_MAX];
const char *c;
if ((c = g_get_application_name ()))
return g_strdup (c);
else if (pa_get_binary_name (buf, sizeof (buf)))
return g_strdup (buf);
else
return g_strdup_printf ("GStreamer-pid-%lu", (gulong) getpid ());
}
pa_channel_map *
gst_pulse_gst_to_channel_map (pa_channel_map * map,
const GstRingBufferSpec * spec)
{
int i;
GstAudioChannelPosition *pos;
pa_channel_map_init (map);
if (!(pos =
gst_audio_get_channel_positions (gst_caps_get_structure (spec->caps,
0)))) {
return NULL;
}
for (i = 0; i < spec->channels; i++) {
if (pos[i] == GST_AUDIO_CHANNEL_POSITION_NONE) {
/* no valid mappings for these channels */
g_free (pos);
return NULL;
} else if (pos[i] < GST_AUDIO_CHANNEL_POSITION_NUM)
map->map[i] = gst_pos_to_pa[pos[i]];
else
map->map[i] = PA_CHANNEL_POSITION_INVALID;
}
g_free (pos);
map->channels = spec->channels;
if (!pa_channel_map_valid (map)) {
return NULL;
}
return map;
}
GstRingBufferSpec *
gst_pulse_channel_map_to_gst (const pa_channel_map * map,
GstRingBufferSpec * spec)
{
int i;
GstAudioChannelPosition *pos;
gboolean invalid = FALSE;
g_return_val_if_fail (map->channels == spec->channels, NULL);
pos = g_new0 (GstAudioChannelPosition, spec->channels + 1);
for (i = 0; i < spec->channels; i++) {
if (map->map[i] == PA_CHANNEL_POSITION_INVALID) {
invalid = TRUE;
break;
} else if ((int) map->map[i] < (int) GST_AUDIO_CHANNEL_POSITION_NUM) {
pos[i] = pa_to_gst_pos[map->map[i] + 1];
} else {
invalid = TRUE;
break;
}
}
if (!invalid && !gst_audio_check_channel_positions (pos, spec->channels))
invalid = TRUE;
if (invalid) {
for (i = 0; i < spec->channels; i++)
pos[i] = GST_AUDIO_CHANNEL_POSITION_NONE;
}
gst_audio_set_channel_positions (gst_caps_get_structure (spec->caps, 0), pos);
g_free (pos);
return spec;
}
void
gst_pulse_cvolume_from_linear (pa_cvolume * v, unsigned channels,
gdouble volume)
{
pa_cvolume_set (v, channels, pa_sw_volume_from_linear (volume));
}
static gboolean
make_proplist_item (GQuark field_id, const GValue * value, gpointer user_data)
{
pa_proplist *p = (pa_proplist *) user_data;
gchar *prop_id = (gchar *) g_quark_to_string (field_id);
/* http://0pointer.de/lennart/projects/pulseaudio/doxygen/proplist_8h.html */
/* match prop id */
/* check type */
switch (G_VALUE_TYPE (value)) {
case G_TYPE_STRING:
pa_proplist_sets (p, prop_id, g_value_get_string (value));
break;
default:
GST_WARNING ("unmapped property type %s", G_VALUE_TYPE_NAME (value));
break;
}
return TRUE;
}
pa_proplist *
gst_pulse_make_proplist (const GstStructure * properties)
{
pa_proplist *proplist = pa_proplist_new ();
/* iterate the structure and fill the proplist */
gst_structure_foreach (properties, make_proplist_item, proplist);
return proplist;
}
|
