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->type == GST_BUFTYPE_RAW) {
84 switch (GST_AUDIO_INFO_FORMAT (&spec->info)) {
85 case GST_AUDIO_FORMAT_U8:
86 ss->format = PA_SAMPLE_U8;
88 case GST_AUDIO_FORMAT_S16_LE:
89 ss->format = PA_SAMPLE_S16LE;
91 case GST_AUDIO_FORMAT_S16_BE:
92 ss->format = PA_SAMPLE_S16BE;
94 case GST_AUDIO_FORMAT_F32_LE:
95 ss->format = PA_SAMPLE_FLOAT32LE;
97 case GST_AUDIO_FORMAT_F32_BE:
98 ss->format = PA_SAMPLE_FLOAT32BE;
100 case GST_AUDIO_FORMAT_S32_LE:
101 ss->format = PA_SAMPLE_S32LE;
103 case GST_AUDIO_FORMAT_S32_BE:
104 ss->format = PA_SAMPLE_S32BE;
106 case GST_AUDIO_FORMAT_S24_3LE:
107 ss->format = PA_SAMPLE_S24LE;
109 case GST_AUDIO_FORMAT_S24_3BE:
110 ss->format = PA_SAMPLE_S24BE;
112 case GST_AUDIO_FORMAT_S24_LE:
113 ss->format = PA_SAMPLE_S24_32LE;
115 case GST_AUDIO_FORMAT_S24_BE:
116 ss->format = PA_SAMPLE_S24_32BE;
121 } else if (spec->type == GST_BUFTYPE_MU_LAW) {
122 ss->format = PA_SAMPLE_ULAW;
123 } else if (spec->type == GST_BUFTYPE_A_LAW) {
124 ss->format = PA_SAMPLE_ALAW;
128 ss->channels = GST_AUDIO_INFO_CHANNELS (&spec->info);
129 ss->rate = GST_AUDIO_INFO_RATE (&spec->info);
131 if (!pa_sample_spec_valid (ss))
137 #ifdef HAVE_PULSE_1_0
139 gst_pulse_fill_format_info (GstRingBufferSpec * spec, pa_format_info ** f,
142 pa_format_info *format;
143 pa_sample_format_t sf = PA_SAMPLE_INVALID;
145 format = pa_format_info_new ();
147 if (spec->format == GST_MU_LAW && spec->width == 8) {
148 format->encoding = PA_ENCODING_PCM;
150 } else if (spec->format == GST_A_LAW && spec->width == 8) {
151 format->encoding = PA_ENCODING_PCM;
153 } else if (spec->format == GST_U8 && spec->width == 8) {
154 format->encoding = PA_ENCODING_PCM;
156 } else if (spec->format == GST_S16_LE && spec->width == 16) {
157 format->encoding = PA_ENCODING_PCM;
158 sf = PA_SAMPLE_S16LE;
159 } else if (spec->format == GST_S16_BE && spec->width == 16) {
160 format->encoding = PA_ENCODING_PCM;
161 sf = PA_SAMPLE_S16BE;
162 } else if (spec->format == GST_FLOAT32_LE && spec->width == 32) {
163 format->encoding = PA_ENCODING_PCM;
164 sf = PA_SAMPLE_FLOAT32LE;
165 } else if (spec->format == GST_FLOAT32_BE && spec->width == 32) {
166 format->encoding = PA_ENCODING_PCM;
167 sf = PA_SAMPLE_FLOAT32BE;
168 } else if (spec->format == GST_S32_LE && spec->width == 32) {
169 format->encoding = PA_ENCODING_PCM;
170 sf = PA_SAMPLE_S32LE;
171 } else if (spec->format == GST_S32_BE && spec->width == 32) {
172 format->encoding = PA_ENCODING_PCM;
173 sf = PA_SAMPLE_S32BE;
174 } else if (spec->format == GST_S24_3LE && spec->width == 24) {
175 format->encoding = PA_ENCODING_PCM;
176 sf = PA_SAMPLE_S24LE;
177 } else if (spec->format == GST_S24_3BE && spec->width == 24) {
178 format->encoding = PA_ENCODING_PCM;
179 sf = PA_SAMPLE_S24BE;
180 } else if (spec->format == GST_S24_LE && spec->width == 32) {
181 format->encoding = PA_ENCODING_PCM;
182 sf = PA_SAMPLE_S24_32LE;
183 } else if (spec->format == GST_S24_BE && spec->width == 32) {
184 format->encoding = PA_ENCODING_PCM;
185 sf = PA_SAMPLE_S24_32BE;
186 } else if (spec->format == GST_AC3) {
187 format->encoding = PA_ENCODING_AC3_IEC61937;
188 } else if (spec->format == GST_EAC3) {
189 format->encoding = PA_ENCODING_EAC3_IEC61937;
190 } else if (spec->format == GST_DTS) {
191 format->encoding = PA_ENCODING_DTS_IEC61937;
192 } else if (spec->format == GST_MPEG) {
193 format->encoding = PA_ENCODING_MPEG_IEC61937;
198 if (format->encoding == PA_ENCODING_PCM) {
199 pa_format_info_set_sample_format (format, sf);
200 pa_format_info_set_channels (format, spec->channels);
203 pa_format_info_set_rate (format, spec->rate);
205 if (!pa_format_info_valid (format))
209 *channels = spec->channels;
215 pa_format_info_free (format);
220 /* PATH_MAX is not defined everywhere, e.g. on GNU Hurd */
222 #define PATH_MAX 4096
226 gst_pulse_client_name (void)
232 if ((c = g_get_application_name ()))
234 else if (pa_get_binary_name (buf, sizeof (buf)))
235 return g_strdup (buf);
237 return g_strdup_printf ("GStreamer-pid-%lu", (gulong) getpid ());
241 gst_pulse_gst_to_channel_map (pa_channel_map * map,
242 const GstRingBufferSpec * spec)
245 GstAudioChannelPosition *pos;
247 pa_channel_map_init (map);
250 gst_audio_get_channel_positions (gst_caps_get_structure (spec->caps,
255 for (i = 0; i < spec->info.channels; i++) {
256 if (pos[i] == GST_AUDIO_CHANNEL_POSITION_NONE) {
257 /* no valid mappings for these channels */
260 } else if (pos[i] < GST_AUDIO_CHANNEL_POSITION_NUM)
261 map->map[i] = gst_pos_to_pa[pos[i]];
263 map->map[i] = PA_CHANNEL_POSITION_INVALID;
267 map->channels = spec->info.channels;
269 if (!pa_channel_map_valid (map)) {
277 gst_pulse_channel_map_to_gst (const pa_channel_map * map,
278 GstRingBufferSpec * spec)
281 GstAudioChannelPosition *pos;
282 gboolean invalid = FALSE;
285 channels = GST_AUDIO_INFO_CHANNELS (&spec->info);
287 g_return_val_if_fail (map->channels == channels, NULL);
289 pos = g_new0 (GstAudioChannelPosition, channels + 1);
291 for (i = 0; i < channels; i++) {
292 if (map->map[i] == PA_CHANNEL_POSITION_INVALID) {
295 } else if ((int) map->map[i] < (int) GST_AUDIO_CHANNEL_POSITION_NUM) {
296 pos[i] = pa_to_gst_pos[map->map[i] + 1];
303 if (!invalid && !gst_audio_check_channel_positions (pos, channels))
307 for (i = 0; i < channels; i++)
308 pos[i] = GST_AUDIO_CHANNEL_POSITION_NONE;
311 gst_audio_set_channel_positions (gst_caps_get_structure (spec->caps, 0), pos);
319 gst_pulse_cvolume_from_linear (pa_cvolume * v, unsigned channels,
322 pa_cvolume_set (v, channels, pa_sw_volume_from_linear (volume));
326 make_proplist_item (GQuark field_id, const GValue * value, gpointer user_data)
328 pa_proplist *p = (pa_proplist *) user_data;
329 gchar *prop_id = (gchar *) g_quark_to_string (field_id);
331 /* http://0pointer.de/lennart/projects/pulseaudio/doxygen/proplist_8h.html */
336 switch (G_VALUE_TYPE (value)) {
338 pa_proplist_sets (p, prop_id, g_value_get_string (value));
341 GST_WARNING ("unmapped property type %s", G_VALUE_TYPE_NAME (value));
349 gst_pulse_make_proplist (const GstStructure * properties)
351 pa_proplist *proplist = pa_proplist_new ();
353 /* iterate the structure and fill the proplist */
354 gst_structure_foreach (properties, make_proplist_item, proplist);