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_TOP_CENTER] = PA_CHANNEL_POSITION_TOP_CENTER,
53 [GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_LEFT] =
54 PA_CHANNEL_POSITION_TOP_FRONT_LEFT,
55 [GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_RIGHT] =
56 PA_CHANNEL_POSITION_TOP_FRONT_RIGHT,
57 [GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_CENTER] =
58 PA_CHANNEL_POSITION_TOP_FRONT_CENTER,
59 [GST_AUDIO_CHANNEL_POSITION_TOP_REAR_LEFT] =
60 PA_CHANNEL_POSITION_TOP_REAR_LEFT,
61 [GST_AUDIO_CHANNEL_POSITION_TOP_REAR_RIGHT] =
62 PA_CHANNEL_POSITION_TOP_REAR_RIGHT,
63 [GST_AUDIO_CHANNEL_POSITION_TOP_REAR_CENTER] =
64 PA_CHANNEL_POSITION_TOP_REAR_CENTER,
65 [GST_AUDIO_CHANNEL_POSITION_NONE] = PA_CHANNEL_POSITION_INVALID
68 /* All index are increased by one because PA_CHANNEL_POSITION_INVALID == -1 */
69 static const GstAudioChannelPosition
70 pa_to_gst_pos[GST_AUDIO_CHANNEL_POSITION_NUM]
72 [PA_CHANNEL_POSITION_MONO + 1] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO,
73 [PA_CHANNEL_POSITION_FRONT_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
74 [PA_CHANNEL_POSITION_FRONT_RIGHT + 1] =
75 GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
76 [PA_CHANNEL_POSITION_REAR_CENTER + 1] =
77 GST_AUDIO_CHANNEL_POSITION_REAR_CENTER,
78 [PA_CHANNEL_POSITION_REAR_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
79 [PA_CHANNEL_POSITION_REAR_RIGHT + 1] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
80 [PA_CHANNEL_POSITION_LFE + 1] = GST_AUDIO_CHANNEL_POSITION_LFE,
81 [PA_CHANNEL_POSITION_FRONT_CENTER + 1] =
82 GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
83 [PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER + 1] =
84 GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
85 [PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER + 1] =
86 GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
87 [PA_CHANNEL_POSITION_SIDE_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
88 [PA_CHANNEL_POSITION_SIDE_RIGHT + 1] = GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
89 [PA_CHANNEL_POSITION_INVALID + 1] = GST_AUDIO_CHANNEL_POSITION_NONE,
93 gstaudioformat_to_pasampleformat (GstAudioFormat format,
94 pa_sample_format_t * sf)
97 case GST_AUDIO_FORMAT_U8:
100 case GST_AUDIO_FORMAT_S16LE:
101 *sf = PA_SAMPLE_S16LE;
103 case GST_AUDIO_FORMAT_S16BE:
104 *sf = PA_SAMPLE_S16BE;
106 case GST_AUDIO_FORMAT_F32LE:
107 *sf = PA_SAMPLE_FLOAT32LE;
109 case GST_AUDIO_FORMAT_F32BE:
110 *sf = PA_SAMPLE_FLOAT32BE;
112 case GST_AUDIO_FORMAT_S32LE:
113 *sf = PA_SAMPLE_S32LE;
115 case GST_AUDIO_FORMAT_S32BE:
116 *sf = PA_SAMPLE_S32BE;
118 case GST_AUDIO_FORMAT_S24LE:
119 *sf = PA_SAMPLE_S24LE;
121 case GST_AUDIO_FORMAT_S24BE:
122 *sf = PA_SAMPLE_S24BE;
124 case GST_AUDIO_FORMAT_S24_32LE:
125 *sf = PA_SAMPLE_S24_32LE;
127 case GST_AUDIO_FORMAT_S24_32BE:
128 *sf = PA_SAMPLE_S24_32BE;
137 gst_pulse_fill_sample_spec (GstAudioRingBufferSpec * spec, pa_sample_spec * ss)
139 if (spec->type == GST_BUFTYPE_RAW) {
140 if (!gstaudioformat_to_pasampleformat (GST_AUDIO_INFO_FORMAT (&spec->info),
143 } else if (spec->type == GST_BUFTYPE_MU_LAW) {
144 ss->format = PA_SAMPLE_ULAW;
145 } else if (spec->type == GST_BUFTYPE_A_LAW) {
146 ss->format = PA_SAMPLE_ALAW;
150 ss->channels = GST_AUDIO_INFO_CHANNELS (&spec->info);
151 ss->rate = GST_AUDIO_INFO_RATE (&spec->info);
153 if (!pa_sample_spec_valid (ss))
160 gst_pulse_fill_format_info (GstAudioRingBufferSpec * spec, pa_format_info ** f,
163 pa_format_info *format;
164 pa_sample_format_t sf = PA_SAMPLE_INVALID;
165 GstAudioInfo *ainfo = &spec->info;
167 format = pa_format_info_new ();
169 if (spec->type == GST_BUFTYPE_MU_LAW && GST_AUDIO_INFO_WIDTH (ainfo) == 8) {
170 format->encoding = PA_ENCODING_PCM;
172 } else if (spec->type == GST_BUFTYPE_A_LAW
173 && GST_AUDIO_INFO_WIDTH (ainfo) == 8) {
174 format->encoding = PA_ENCODING_PCM;
176 } else if (spec->type == GST_BUFTYPE_RAW) {
177 format->encoding = PA_ENCODING_PCM;
178 if (!gstaudioformat_to_pasampleformat (GST_AUDIO_INFO_FORMAT (ainfo), &sf))
180 } else if (spec->type == GST_BUFTYPE_AC3) {
181 format->encoding = PA_ENCODING_AC3_IEC61937;
182 } else if (spec->type == GST_BUFTYPE_EAC3) {
183 format->encoding = PA_ENCODING_EAC3_IEC61937;
184 } else if (spec->type == GST_BUFTYPE_DTS) {
185 format->encoding = PA_ENCODING_DTS_IEC61937;
186 } else if (spec->type == GST_BUFTYPE_MPEG) {
187 format->encoding = PA_ENCODING_MPEG_IEC61937;
192 if (format->encoding == PA_ENCODING_PCM) {
193 pa_format_info_set_sample_format (format, sf);
194 pa_format_info_set_channels (format, GST_AUDIO_INFO_CHANNELS (ainfo));
197 pa_format_info_set_rate (format, GST_AUDIO_INFO_RATE (ainfo));
199 if (!pa_format_info_valid (format))
203 *channels = GST_AUDIO_INFO_CHANNELS (ainfo);
209 pa_format_info_free (format);
213 /* PATH_MAX is not defined everywhere, e.g. on GNU Hurd */
215 #define PATH_MAX 4096
219 gst_pulse_client_name (void)
225 if ((c = g_get_application_name ()))
227 else if (pa_get_binary_name (buf, sizeof (buf)))
228 return g_strdup (buf);
230 return g_strdup_printf ("GStreamer-pid-%lu", (gulong) getpid ());
234 gst_pulse_gst_to_channel_map (pa_channel_map * map,
235 const GstAudioRingBufferSpec * spec)
238 GstAudioChannelPosition *pos;
240 pa_channel_map_init (map);
243 gst_audio_get_channel_positions (gst_caps_get_structure (spec->caps,
248 for (i = 0; i < spec->info.channels; i++) {
249 if (pos[i] == GST_AUDIO_CHANNEL_POSITION_NONE) {
250 /* no valid mappings for these channels */
253 } else if (pos[i] < GST_AUDIO_CHANNEL_POSITION_NUM)
254 map->map[i] = gst_pos_to_pa[pos[i]];
256 map->map[i] = PA_CHANNEL_POSITION_INVALID;
260 map->channels = spec->info.channels;
262 if (!pa_channel_map_valid (map)) {
269 GstAudioRingBufferSpec *
270 gst_pulse_channel_map_to_gst (const pa_channel_map * map,
271 GstAudioRingBufferSpec * spec)
274 GstAudioChannelPosition *pos;
275 gboolean invalid = FALSE;
278 channels = GST_AUDIO_INFO_CHANNELS (&spec->info);
280 g_return_val_if_fail (map->channels == channels, NULL);
282 pos = g_new0 (GstAudioChannelPosition, channels + 1);
284 for (i = 0; i < channels; i++) {
285 if (map->map[i] == PA_CHANNEL_POSITION_INVALID) {
288 } else if ((int) map->map[i] < (int) GST_AUDIO_CHANNEL_POSITION_NUM) {
289 pos[i] = pa_to_gst_pos[map->map[i] + 1];
296 if (!invalid && !gst_audio_check_channel_positions (pos, channels))
300 for (i = 0; i < channels; i++)
301 pos[i] = GST_AUDIO_CHANNEL_POSITION_NONE;
304 gst_audio_set_channel_positions (gst_caps_get_structure (spec->caps, 0), pos);
312 gst_pulse_cvolume_from_linear (pa_cvolume * v, unsigned channels,
315 pa_cvolume_set (v, channels, pa_sw_volume_from_linear (volume));
319 make_proplist_item (GQuark field_id, const GValue * value, gpointer user_data)
321 pa_proplist *p = (pa_proplist *) user_data;
322 gchar *prop_id = (gchar *) g_quark_to_string (field_id);
324 /* http://0pointer.de/lennart/projects/pulseaudio/doxygen/proplist_8h.html */
329 switch (G_VALUE_TYPE (value)) {
331 pa_proplist_sets (p, prop_id, g_value_get_string (value));
334 GST_WARNING ("unmapped property type %s", G_VALUE_TYPE_NAME (value));
342 gst_pulse_make_proplist (const GstStructure * properties)
344 pa_proplist *proplist = pa_proplist_new ();
346 /* iterate the structure and fill the proplist */
347 gst_structure_foreach (properties, make_proplist_item, proplist);