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/*
* GStreamer pulseaudio plugin
*
* Copyright (c) 2004-2008 Lennart Poettering
*
* gst-pulse is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, or (at your option) any later version.
*
* gst-pulse is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with gst-pulse; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pulseutil.h"
#include <gst/audio/multichannel.h>
static const pa_channel_position_t gst_pos_to_pa[GST_AUDIO_CHANNEL_POSITION_NUM]
= {
[GST_AUDIO_CHANNEL_POSITION_FRONT_MONO] = PA_CHANNEL_POSITION_MONO,
[GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT] = PA_CHANNEL_POSITION_FRONT_LEFT,
[GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT] = PA_CHANNEL_POSITION_FRONT_RIGHT,
[GST_AUDIO_CHANNEL_POSITION_REAR_CENTER] = PA_CHANNEL_POSITION_REAR_CENTER,
[GST_AUDIO_CHANNEL_POSITION_REAR_LEFT] = PA_CHANNEL_POSITION_REAR_LEFT,
[GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT] = PA_CHANNEL_POSITION_REAR_RIGHT,
[GST_AUDIO_CHANNEL_POSITION_LFE] = PA_CHANNEL_POSITION_LFE,
[GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER] = PA_CHANNEL_POSITION_FRONT_CENTER,
[GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER] =
PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
[GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER] =
PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
[GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT] = PA_CHANNEL_POSITION_SIDE_LEFT,
[GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT] = PA_CHANNEL_POSITION_SIDE_RIGHT,
[GST_AUDIO_CHANNEL_POSITION_NONE] = PA_CHANNEL_POSITION_INVALID
};
/* All index are increased by one because PA_CHANNEL_POSITION_INVALID == -1 */
static const GstAudioChannelPosition
pa_to_gst_pos[GST_AUDIO_CHANNEL_POSITION_NUM]
= {
[PA_CHANNEL_POSITION_MONO + 1] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO,
[PA_CHANNEL_POSITION_FRONT_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
[PA_CHANNEL_POSITION_FRONT_RIGHT + 1] =
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
[PA_CHANNEL_POSITION_REAR_CENTER + 1] =
GST_AUDIO_CHANNEL_POSITION_REAR_CENTER,
[PA_CHANNEL_POSITION_REAR_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
[PA_CHANNEL_POSITION_REAR_RIGHT + 1] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
[PA_CHANNEL_POSITION_LFE + 1] = GST_AUDIO_CHANNEL_POSITION_LFE,
[PA_CHANNEL_POSITION_FRONT_CENTER + 1] =
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
[PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER + 1] =
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
[PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER + 1] =
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
[PA_CHANNEL_POSITION_SIDE_LEFT + 1] = GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT,
[PA_CHANNEL_POSITION_SIDE_RIGHT + 1] = GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT,
[PA_CHANNEL_POSITION_INVALID + 1] = GST_AUDIO_CHANNEL_POSITION_NONE,
};
gboolean
gst_pulse_fill_sample_spec (GstRingBufferSpec * spec, pa_sample_spec * ss)
{
if (spec->format == GST_MU_LAW && spec->width == 8)
ss->format = PA_SAMPLE_ULAW;
else if (spec->format == GST_A_LAW && spec->width == 8)
ss->format = PA_SAMPLE_ALAW;
else if (spec->format == GST_U8 && spec->width == 8)
ss->format = PA_SAMPLE_U8;
else if (spec->format == GST_S16_LE && spec->width == 16)
ss->format = PA_SAMPLE_S16LE;
else if (spec->format == GST_S16_BE && spec->width == 16)
ss->format = PA_SAMPLE_S16BE;
else if (spec->format == GST_FLOAT32_LE && spec->width == 32)
ss->format = PA_SAMPLE_FLOAT32LE;
else if (spec->format == GST_FLOAT32_BE && spec->width == 32)
ss->format = PA_SAMPLE_FLOAT32BE;
else if (spec->format == GST_S32_LE && spec->width == 32)
ss->format = PA_SAMPLE_S32LE;
else if (spec->format == GST_S32_BE && spec->width == 32)
ss->format = PA_SAMPLE_S32BE;
else
return FALSE;
ss->channels = spec->channels;
ss->rate = spec->rate;
if (!pa_sample_spec_valid (ss))
return FALSE;
return TRUE;
}
gchar *
gst_pulse_client_name (void)
{
gchar buf[PATH_MAX];
const char *c;
if ((c = g_get_application_name ()))
return g_strdup_printf ("%s", c);
else if (pa_get_binary_name (buf, sizeof (buf)))
return g_strdup_printf ("%s", buf);
else
return g_strdup ("GStreamer");
}
pa_channel_map *
gst_pulse_gst_to_channel_map (pa_channel_map * map,
const GstRingBufferSpec * spec)
{
int i;
GstAudioChannelPosition *pos;
pa_channel_map_init (map);
if (!(pos =
gst_audio_get_channel_positions (gst_caps_get_structure (spec->caps,
0)))) {
/* g_debug("%s: No channel positions!\n", G_STRFUNC); */
return NULL;
}
/* g_debug("%s: Got channel positions:\n", G_STRFUNC); */
for (i = 0; i < spec->channels; i++) {
if (pos[i] == GST_AUDIO_CHANNEL_POSITION_NONE) {
/* no valid mappings for these channels */
g_free (pos);
return NULL;
} else if (pos[i] < GST_AUDIO_CHANNEL_POSITION_NUM)
map->map[i] = gst_pos_to_pa[pos[i]];
else
map->map[i] = PA_CHANNEL_POSITION_INVALID;
/*g_debug(" channel %d: gst: %d pulse: %d\n", i, pos[i], map->map[i]); */
}
g_free (pos);
map->channels = spec->channels;
if (!pa_channel_map_valid (map)) {
/* g_debug("generated invalid map!\n"); */
return NULL;
}
return map;
}
GstRingBufferSpec *
gst_pulse_channel_map_to_gst (const pa_channel_map * map,
GstRingBufferSpec * spec)
{
int i;
GstAudioChannelPosition *pos;
gboolean invalid = FALSE;
g_return_val_if_fail (map->channels == spec->channels, NULL);
pos = g_new0 (GstAudioChannelPosition, spec->channels + 1);
for (i = 0; i < spec->channels; i++) {
if (map->map[i] == PA_CHANNEL_POSITION_INVALID) {
invalid = TRUE;
break;
} else if (map->map[i] < GST_AUDIO_CHANNEL_POSITION_NUM) {
pos[i] = pa_to_gst_pos[map->map[i] + 1];
} else {
invalid = TRUE;
break;
}
}
if (!invalid && !gst_audio_check_channel_positions (pos, spec->channels))
invalid = TRUE;
if (invalid) {
for (i = 0; i < spec->channels; i++)
pos[i] = GST_AUDIO_CHANNEL_POSITION_NONE;
}
gst_audio_set_channel_positions (gst_caps_get_structure (spec->caps, 0), pos);
g_free (pos);
return spec;
}
void
gst_pulse_cvolume_from_linear (pa_cvolume * v, unsigned channels,
gdouble volume)
{
pa_cvolume_set (v, channels, pa_sw_volume_from_linear (volume));
}
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