2 * GStreamer pulseaudio plugin
4 * Copyright (c) 2004-2008 Lennart Poettering
6 * gst-pulse is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as
8 * published by the Free Software Foundation; either version 2.1 of the
9 * License, or (at your option) any later version.
11 * gst-pulse is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with gst-pulse; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
26 #include "pulseutil.h"
27 #include <gst/audio/multichannel.h>
30 # include <unistd.h> /* getpid on UNIX */
33 # include <process.h> /* getpid on win32 */
36 static const pa_channel_position_t gst_pos_to_pa[GST_AUDIO_CHANNEL_POSITION_NUM]
38 [GST_AUDIO_CHANNEL_POSITION_FRONT_MONO] = PA_CHANNEL_POSITION_MONO,
39 [GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT] = PA_CHANNEL_POSITION_FRONT_LEFT,
40 [GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT] = PA_CHANNEL_POSITION_FRONT_RIGHT,
41 [GST_AUDIO_CHANNEL_POSITION_REAR_CENTER] = PA_CHANNEL_POSITION_REAR_CENTER,
42 [GST_AUDIO_CHANNEL_POSITION_REAR_LEFT] = PA_CHANNEL_POSITION_REAR_LEFT,
43 [GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT] = PA_CHANNEL_POSITION_REAR_RIGHT,
44 [GST_AUDIO_CHANNEL_POSITION_LFE] = PA_CHANNEL_POSITION_LFE,
45 [GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER] = PA_CHANNEL_POSITION_FRONT_CENTER,
46 [GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER] =
47 PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
48 [GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER] =
49 PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
50 [GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT] = PA_CHANNEL_POSITION_SIDE_LEFT,
51 [GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT] = PA_CHANNEL_POSITION_SIDE_RIGHT,
52 [GST_AUDIO_CHANNEL_POSITION_NONE] = PA_CHANNEL_POSITION_INVALID
55 /* All index are increased by one because PA_CHANNEL_POSITION_INVALID == -1 */
56 static const GstAudioChannelPosition
57 pa_to_gst_pos[GST_AUDIO_CHANNEL_POSITION_NUM]
59 [PA_CHANNEL_POSITION_MONO + 1] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO,
60 [PA_CHANNEL_POSITION_FRONT_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
61 [PA_CHANNEL_POSITION_FRONT_RIGHT + 1] =
62 GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
63 [PA_CHANNEL_POSITION_REAR_CENTER + 1] =
64 GST_AUDIO_CHANNEL_POSITION_REAR_CENTER,
65 [PA_CHANNEL_POSITION_REAR_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
66 [PA_CHANNEL_POSITION_REAR_RIGHT + 1] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
67 [PA_CHANNEL_POSITION_LFE + 1] = GST_AUDIO_CHANNEL_POSITION_LFE,
68 [PA_CHANNEL_POSITION_FRONT_CENTER + 1] =
69 GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
70 [PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER + 1] =
71 GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
72 [PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER + 1] =
73 GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
74 [PA_CHANNEL_POSITION_SIDE_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
75 [PA_CHANNEL_POSITION_SIDE_RIGHT + 1] = GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
76 [PA_CHANNEL_POSITION_INVALID + 1] = GST_AUDIO_CHANNEL_POSITION_NONE,
80 gst_pulse_fill_sample_spec (GstRingBufferSpec * spec, pa_sample_spec * ss)
83 if (spec->format == GST_MU_LAW && spec->width == 8)
84 ss->format = PA_SAMPLE_ULAW;
85 else if (spec->format == GST_A_LAW && spec->width == 8)
86 ss->format = PA_SAMPLE_ALAW;
87 else if (spec->format == GST_U8 && spec->width == 8)
88 ss->format = PA_SAMPLE_U8;
89 else if (spec->format == GST_S16_LE && spec->width == 16)
90 ss->format = PA_SAMPLE_S16LE;
91 else if (spec->format == GST_S16_BE && spec->width == 16)
92 ss->format = PA_SAMPLE_S16BE;
93 else if (spec->format == GST_FLOAT32_LE && spec->width == 32)
94 ss->format = PA_SAMPLE_FLOAT32LE;
95 else if (spec->format == GST_FLOAT32_BE && spec->width == 32)
96 ss->format = PA_SAMPLE_FLOAT32BE;
97 else if (spec->format == GST_S32_LE && spec->width == 32)
98 ss->format = PA_SAMPLE_S32LE;
99 else if (spec->format == GST_S32_BE && spec->width == 32)
100 ss->format = PA_SAMPLE_S32BE;
101 #ifdef HAVE_PULSE_0_9_15
102 else if (spec->format == GST_S24_3LE && spec->width == 24)
103 ss->format = PA_SAMPLE_S24LE;
104 else if (spec->format == GST_S24_3BE && spec->width == 24)
105 ss->format = PA_SAMPLE_S24BE;
106 else if (spec->format == GST_S24_LE && spec->width == 32)
107 ss->format = PA_SAMPLE_S24_32LE;
108 else if (spec->format == GST_S24_BE && spec->width == 32)
109 ss->format = PA_SAMPLE_S24_32BE;
114 ss->channels = spec->channels;
115 ss->rate = spec->rate;
117 if (!pa_sample_spec_valid (ss))
124 gst_pulse_client_name (void)
130 if ((c = g_get_application_name ()))
132 else if (pa_get_binary_name (buf, sizeof (buf)))
133 return g_strdup (buf);
135 return g_strdup_printf ("GStreamer-pid-%lu", (gulong) getpid ());
139 gst_pulse_gst_to_channel_map (pa_channel_map * map,
140 const GstRingBufferSpec * spec)
143 GstAudioChannelPosition *pos;
145 pa_channel_map_init (map);
148 gst_audio_get_channel_positions (gst_caps_get_structure (spec->caps,
153 for (i = 0; i < spec->channels; i++) {
154 if (pos[i] == GST_AUDIO_CHANNEL_POSITION_NONE) {
155 /* no valid mappings for these channels */
158 } else if (pos[i] < GST_AUDIO_CHANNEL_POSITION_NUM)
159 map->map[i] = gst_pos_to_pa[pos[i]];
161 map->map[i] = PA_CHANNEL_POSITION_INVALID;
165 map->channels = spec->channels;
167 if (!pa_channel_map_valid (map)) {
175 gst_pulse_channel_map_to_gst (const pa_channel_map * map,
176 GstRingBufferSpec * spec)
179 GstAudioChannelPosition *pos;
180 gboolean invalid = FALSE;
182 g_return_val_if_fail (map->channels == spec->channels, NULL);
184 pos = g_new0 (GstAudioChannelPosition, spec->channels + 1);
186 for (i = 0; i < spec->channels; i++) {
187 if (map->map[i] == PA_CHANNEL_POSITION_INVALID) {
190 } else if ((int) map->map[i] < (int) GST_AUDIO_CHANNEL_POSITION_NUM) {
191 pos[i] = pa_to_gst_pos[map->map[i] + 1];
198 if (!invalid && !gst_audio_check_channel_positions (pos, spec->channels))
202 for (i = 0; i < spec->channels; i++)
203 pos[i] = GST_AUDIO_CHANNEL_POSITION_NONE;
206 gst_audio_set_channel_positions (gst_caps_get_structure (spec->caps, 0), pos);
214 gst_pulse_cvolume_from_linear (pa_cvolume * v, unsigned channels,
217 pa_cvolume_set (v, channels, pa_sw_volume_from_linear (volume));
221 make_proplist_item (GQuark field_id, const GValue * value, gpointer user_data)
223 pa_proplist *p = (pa_proplist *) user_data;
224 gchar *prop_id = (gchar *) g_quark_to_string (field_id);
226 /* http://0pointer.de/lennart/projects/pulseaudio/doxygen/proplist_8h.html */
231 switch (G_VALUE_TYPE (value)) {
233 pa_proplist_sets (p, prop_id, g_value_get_string (value));
236 GST_WARNING ("unmapped property type %s", G_VALUE_TYPE_NAME (value));
244 gst_pulse_make_proplist (const GstStructure * properties)
246 pa_proplist *proplist = pa_proplist_new ();
248 /* iterate the structure and fill the proplist */
249 gst_structure_foreach (properties, make_proplist_item, proplist);