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>
29 static const pa_channel_position_t gst_pos_to_pa[GST_AUDIO_CHANNEL_POSITION_NUM]
31 [GST_AUDIO_CHANNEL_POSITION_FRONT_MONO] = PA_CHANNEL_POSITION_MONO,
32 [GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT] = PA_CHANNEL_POSITION_FRONT_LEFT,
33 [GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT] = PA_CHANNEL_POSITION_FRONT_RIGHT,
34 [GST_AUDIO_CHANNEL_POSITION_REAR_CENTER] = PA_CHANNEL_POSITION_REAR_CENTER,
35 [GST_AUDIO_CHANNEL_POSITION_REAR_LEFT] = PA_CHANNEL_POSITION_REAR_LEFT,
36 [GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT] = PA_CHANNEL_POSITION_REAR_RIGHT,
37 [GST_AUDIO_CHANNEL_POSITION_LFE] = PA_CHANNEL_POSITION_LFE,
38 [GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER] = PA_CHANNEL_POSITION_FRONT_CENTER,
39 [GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER] =
40 PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
41 [GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER] =
42 PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
43 [GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT] = PA_CHANNEL_POSITION_SIDE_LEFT,
44 [GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT] = PA_CHANNEL_POSITION_SIDE_RIGHT,
45 [GST_AUDIO_CHANNEL_POSITION_NONE] = PA_CHANNEL_POSITION_INVALID
48 /* All index are increased by one because PA_CHANNEL_POSITION_INVALID == -1 */
49 static const GstAudioChannelPosition
50 pa_to_gst_pos[GST_AUDIO_CHANNEL_POSITION_NUM]
52 [PA_CHANNEL_POSITION_MONO + 1] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO,
53 [PA_CHANNEL_POSITION_FRONT_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
54 [PA_CHANNEL_POSITION_FRONT_RIGHT + 1] =
55 GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
56 [PA_CHANNEL_POSITION_REAR_CENTER + 1] =
57 GST_AUDIO_CHANNEL_POSITION_REAR_CENTER,
58 [PA_CHANNEL_POSITION_REAR_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
59 [PA_CHANNEL_POSITION_REAR_RIGHT + 1] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
60 [PA_CHANNEL_POSITION_LFE + 1] = GST_AUDIO_CHANNEL_POSITION_LFE,
61 [PA_CHANNEL_POSITION_FRONT_CENTER + 1] =
62 GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
63 [PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER + 1] =
64 GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
65 [PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER + 1] =
66 GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
67 [PA_CHANNEL_POSITION_SIDE_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
68 [PA_CHANNEL_POSITION_SIDE_RIGHT + 1] = GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
69 [PA_CHANNEL_POSITION_INVALID + 1] = GST_AUDIO_CHANNEL_POSITION_NONE,
73 gst_pulse_fill_sample_spec (GstRingBufferSpec * spec, pa_sample_spec * ss)
76 if (spec->format == GST_MU_LAW && spec->width == 8)
77 ss->format = PA_SAMPLE_ULAW;
78 else if (spec->format == GST_A_LAW && spec->width == 8)
79 ss->format = PA_SAMPLE_ALAW;
80 else if (spec->format == GST_U8 && spec->width == 8)
81 ss->format = PA_SAMPLE_U8;
82 else if (spec->format == GST_S16_LE && spec->width == 16)
83 ss->format = PA_SAMPLE_S16LE;
84 else if (spec->format == GST_S16_BE && spec->width == 16)
85 ss->format = PA_SAMPLE_S16BE;
86 else if (spec->format == GST_FLOAT32_LE && spec->width == 32)
87 ss->format = PA_SAMPLE_FLOAT32LE;
88 else if (spec->format == GST_FLOAT32_BE && spec->width == 32)
89 ss->format = PA_SAMPLE_FLOAT32BE;
90 else if (spec->format == GST_S32_LE && spec->width == 32)
91 ss->format = PA_SAMPLE_S32LE;
92 else if (spec->format == GST_S32_BE && spec->width == 32)
93 ss->format = PA_SAMPLE_S32BE;
94 #ifdef HAVE_PULSE_0_9_15
95 else if (spec->format == GST_S24_3LE && spec->width == 24)
96 ss->format = PA_SAMPLE_S24LE;
97 else if (spec->format == GST_S24_3BE && spec->width == 24)
98 ss->format = PA_SAMPLE_S24BE;
99 else if (spec->format == GST_S24_LE && spec->width == 32)
100 ss->format = PA_SAMPLE_S24_32LE;
101 else if (spec->format == GST_S24_BE && spec->width == 32)
102 ss->format = PA_SAMPLE_S24_32BE;
107 ss->channels = spec->channels;
108 ss->rate = spec->rate;
110 if (!pa_sample_spec_valid (ss))
117 gst_pulse_client_name (void)
123 if ((c = g_get_application_name ()))
124 return g_strdup_printf ("%s", c);
125 else if (pa_get_binary_name (buf, sizeof (buf)))
126 return g_strdup_printf ("%s", buf);
128 return g_strdup ("GStreamer");
132 gst_pulse_gst_to_channel_map (pa_channel_map * map,
133 const GstRingBufferSpec * spec)
136 GstAudioChannelPosition *pos;
138 pa_channel_map_init (map);
141 gst_audio_get_channel_positions (gst_caps_get_structure (spec->caps,
146 for (i = 0; i < spec->channels; i++) {
147 if (pos[i] == GST_AUDIO_CHANNEL_POSITION_NONE) {
148 /* no valid mappings for these channels */
151 } else if (pos[i] < GST_AUDIO_CHANNEL_POSITION_NUM)
152 map->map[i] = gst_pos_to_pa[pos[i]];
154 map->map[i] = PA_CHANNEL_POSITION_INVALID;
158 map->channels = spec->channels;
160 if (!pa_channel_map_valid (map)) {
168 gst_pulse_channel_map_to_gst (const pa_channel_map * map,
169 GstRingBufferSpec * spec)
172 GstAudioChannelPosition *pos;
173 gboolean invalid = FALSE;
175 g_return_val_if_fail (map->channels == spec->channels, NULL);
177 pos = g_new0 (GstAudioChannelPosition, spec->channels + 1);
179 for (i = 0; i < spec->channels; i++) {
180 if (map->map[i] == PA_CHANNEL_POSITION_INVALID) {
183 } else if ((int) map->map[i] < (int) GST_AUDIO_CHANNEL_POSITION_NUM) {
184 pos[i] = pa_to_gst_pos[map->map[i] + 1];
191 if (!invalid && !gst_audio_check_channel_positions (pos, spec->channels))
195 for (i = 0; i < spec->channels; i++)
196 pos[i] = GST_AUDIO_CHANNEL_POSITION_NONE;
199 gst_audio_set_channel_positions (gst_caps_get_structure (spec->caps, 0), pos);
207 gst_pulse_cvolume_from_linear (pa_cvolume * v, unsigned channels,
210 pa_cvolume_set (v, channels, pa_sw_volume_from_linear (volume));