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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
26 #include <gst/audio/audio.h>
28 #include "pulseutil.h"
31 # include <unistd.h> /* getpid on UNIX */
34 # include <process.h> /* getpid on win32 */
39 GstAudioChannelPosition gst_pos;
40 pa_channel_position_t pa_pos;
41 } gst_pa_pos_table[] = {
43 GST_AUDIO_CHANNEL_POSITION_MONO, PA_CHANNEL_POSITION_MONO}, {
44 GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_LEFT}, {
45 GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT, PA_CHANNEL_POSITION_FRONT_RIGHT}, {
46 GST_AUDIO_CHANNEL_POSITION_REAR_CENTER, PA_CHANNEL_POSITION_REAR_CENTER}, {
47 GST_AUDIO_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_LEFT}, {
48 GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT, PA_CHANNEL_POSITION_REAR_RIGHT}, {
49 GST_AUDIO_CHANNEL_POSITION_LFE1, PA_CHANNEL_POSITION_LFE}, {
50 GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_FRONT_CENTER}, {
51 GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
52 PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER}, {
53 GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
54 PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER}, {
55 GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_LEFT}, {
56 GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT, PA_CHANNEL_POSITION_SIDE_RIGHT}, {
57 GST_AUDIO_CHANNEL_POSITION_TOP_CENTER, PA_CHANNEL_POSITION_TOP_CENTER}, {
58 GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_LEFT,
59 PA_CHANNEL_POSITION_TOP_FRONT_LEFT}, {
60 GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_RIGHT,
61 PA_CHANNEL_POSITION_TOP_FRONT_RIGHT}, {
62 GST_AUDIO_CHANNEL_POSITION_TOP_FRONT_CENTER,
63 PA_CHANNEL_POSITION_TOP_FRONT_CENTER}, {
64 GST_AUDIO_CHANNEL_POSITION_TOP_REAR_LEFT, PA_CHANNEL_POSITION_TOP_REAR_LEFT}, {
65 GST_AUDIO_CHANNEL_POSITION_TOP_REAR_RIGHT,
66 PA_CHANNEL_POSITION_TOP_REAR_RIGHT}, {
67 GST_AUDIO_CHANNEL_POSITION_TOP_REAR_CENTER,
68 PA_CHANNEL_POSITION_TOP_REAR_CENTER}, {
69 GST_AUDIO_CHANNEL_POSITION_NONE, PA_CHANNEL_POSITION_INVALID}
73 gstaudioformat_to_pasampleformat (GstAudioFormat format,
74 pa_sample_format_t * sf)
77 case GST_AUDIO_FORMAT_U8:
80 case GST_AUDIO_FORMAT_S16LE:
81 *sf = PA_SAMPLE_S16LE;
83 case GST_AUDIO_FORMAT_S16BE:
84 *sf = PA_SAMPLE_S16BE;
86 case GST_AUDIO_FORMAT_F32LE:
87 *sf = PA_SAMPLE_FLOAT32LE;
89 case GST_AUDIO_FORMAT_F32BE:
90 *sf = PA_SAMPLE_FLOAT32BE;
92 case GST_AUDIO_FORMAT_S32LE:
93 *sf = PA_SAMPLE_S32LE;
95 case GST_AUDIO_FORMAT_S32BE:
96 *sf = PA_SAMPLE_S32BE;
98 case GST_AUDIO_FORMAT_S24LE:
99 *sf = PA_SAMPLE_S24LE;
101 case GST_AUDIO_FORMAT_S24BE:
102 *sf = PA_SAMPLE_S24BE;
104 case GST_AUDIO_FORMAT_S24_32LE:
105 *sf = PA_SAMPLE_S24_32LE;
107 case GST_AUDIO_FORMAT_S24_32BE:
108 *sf = PA_SAMPLE_S24_32BE;
117 gst_pulse_fill_sample_spec (GstAudioRingBufferSpec * spec, pa_sample_spec * ss)
119 if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_RAW) {
120 if (!gstaudioformat_to_pasampleformat (GST_AUDIO_INFO_FORMAT (&spec->info),
123 } else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_MU_LAW) {
124 ss->format = PA_SAMPLE_ULAW;
125 } else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_A_LAW) {
126 ss->format = PA_SAMPLE_ALAW;
130 ss->channels = GST_AUDIO_INFO_CHANNELS (&spec->info);
131 ss->rate = GST_AUDIO_INFO_RATE (&spec->info);
133 if (!pa_sample_spec_valid (ss))
140 gst_pulse_fill_format_info (GstAudioRingBufferSpec * spec, pa_format_info ** f,
143 pa_format_info *format;
144 pa_sample_format_t sf = PA_SAMPLE_INVALID;
145 GstAudioInfo *ainfo = &spec->info;
147 format = pa_format_info_new ();
149 if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_MU_LAW
150 && GST_AUDIO_INFO_WIDTH (ainfo) == 8) {
151 format->encoding = PA_ENCODING_PCM;
153 } else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_A_LAW
154 && GST_AUDIO_INFO_WIDTH (ainfo) == 8) {
155 format->encoding = PA_ENCODING_PCM;
157 } else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_RAW) {
158 format->encoding = PA_ENCODING_PCM;
159 if (!gstaudioformat_to_pasampleformat (GST_AUDIO_INFO_FORMAT (ainfo), &sf))
161 } else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_AC3) {
162 format->encoding = PA_ENCODING_AC3_IEC61937;
163 } else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_EAC3) {
164 format->encoding = PA_ENCODING_EAC3_IEC61937;
165 } else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_DTS) {
166 format->encoding = PA_ENCODING_DTS_IEC61937;
167 } else if (spec->type == GST_AUDIO_RING_BUFFER_FORMAT_TYPE_MPEG) {
168 format->encoding = PA_ENCODING_MPEG_IEC61937;
173 if (format->encoding == PA_ENCODING_PCM) {
174 pa_format_info_set_sample_format (format, sf);
175 pa_format_info_set_channels (format, GST_AUDIO_INFO_CHANNELS (ainfo));
178 pa_format_info_set_rate (format, GST_AUDIO_INFO_RATE (ainfo));
180 if (!pa_format_info_valid (format))
184 *channels = GST_AUDIO_INFO_CHANNELS (ainfo);
190 pa_format_info_free (format);
194 /* PATH_MAX is not defined everywhere, e.g. on GNU Hurd */
196 #define PATH_MAX 4096
200 gst_pulse_client_name (void)
206 if ((c = g_get_application_name ()))
208 else if (pa_get_binary_name (buf, sizeof (buf)))
209 return g_strdup (buf);
211 return g_strdup_printf ("GStreamer-pid-%lu", (gulong) getpid ());
215 gst_pulse_gst_to_channel_map (pa_channel_map * map,
216 const GstAudioRingBufferSpec * spec)
220 const GstAudioChannelPosition *pos;
222 pa_channel_map_init (map);
224 channels = GST_AUDIO_INFO_CHANNELS (&spec->info);
225 pos = spec->info.position;
227 for (j = 0; j < channels; j++) {
228 for (i = 0; i < G_N_ELEMENTS (gst_pa_pos_table); i++) {
229 if (pos[j] == gst_pa_pos_table[i].gst_pos) {
230 map->map[j] = gst_pa_pos_table[i].pa_pos;
234 if (i == G_N_ELEMENTS (gst_pa_pos_table))
238 if (j != spec->info.channels) {
242 map->channels = spec->info.channels;
244 if (!pa_channel_map_valid (map)) {
251 GstAudioRingBufferSpec *
252 gst_pulse_channel_map_to_gst (const pa_channel_map * map,
253 GstAudioRingBufferSpec * spec)
256 gboolean invalid = FALSE;
258 GstAudioChannelPosition *pos;
260 channels = GST_AUDIO_INFO_CHANNELS (&spec->info);
262 g_return_val_if_fail (map->channels == channels, NULL);
264 pos = spec->info.position;
266 for (j = 0; j < channels; j++) {
267 for (i = 0; j < channels && i < G_N_ELEMENTS (gst_pa_pos_table); i++) {
268 if (map->map[j] == gst_pa_pos_table[i].pa_pos) {
269 pos[j] = gst_pa_pos_table[i].gst_pos;
273 if (i == G_N_ELEMENTS (gst_pa_pos_table))
278 && !gst_audio_check_valid_channel_positions (pos, channels, FALSE))
282 for (i = 0; i < channels; i++)
283 pos[i] = GST_AUDIO_CHANNEL_POSITION_NONE;
285 if (pos[0] != GST_AUDIO_CHANNEL_POSITION_NONE)
286 spec->info.flags &= ~GST_AUDIO_FLAG_UNPOSITIONED;
293 gst_pulse_cvolume_from_linear (pa_cvolume * v, unsigned channels,
296 pa_cvolume_set (v, channels, pa_sw_volume_from_linear (volume));
300 make_proplist_item (GQuark field_id, const GValue * value, gpointer user_data)
302 pa_proplist *p = (pa_proplist *) user_data;
303 gchar *prop_id = (gchar *) g_quark_to_string (field_id);
305 /* http://0pointer.de/lennart/projects/pulseaudio/doxygen/proplist_8h.html */
310 switch (G_VALUE_TYPE (value)) {
312 pa_proplist_sets (p, prop_id, g_value_get_string (value));
315 GST_WARNING ("unmapped property type %s", G_VALUE_TYPE_NAME (value));
323 gst_pulse_make_proplist (const GstStructure * properties)
325 pa_proplist *proplist = pa_proplist_new ();
327 /* iterate the structure and fill the proplist */
328 gst_structure_foreach (properties, make_proplist_item, proplist);