--- a/gst_plugins_base/ext/alsa/gstalsamixertrack.c Wed Mar 31 22:03:18 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,339 +0,0 @@
-/* ALSA mixer track implementation.
- * Copyright (C) 2003 Leif Johnson <leif@ambient.2y.net>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; 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 <gst/gst-i18n-plugin.h>
-
-#include "gstalsamixertrack.h"
-
-static void gst_alsa_mixer_track_init (GstAlsaMixerTrack * alsa_track);
-static void gst_alsa_mixer_track_class_init (gpointer g_class,
- gpointer class_data);
-
-static GstMixerTrackClass *parent_class = NULL;
-
-GType
-gst_alsa_mixer_track_get_type (void)
-{
- static GType track_type = 0;
-
- if (!track_type) {
- static const GTypeInfo track_info = {
- sizeof (GstAlsaMixerTrackClass),
- NULL,
- NULL,
- gst_alsa_mixer_track_class_init,
- NULL,
- NULL,
- sizeof (GstAlsaMixerTrack),
- 0,
- (GInstanceInitFunc) gst_alsa_mixer_track_init,
- NULL
- };
-
- track_type =
- g_type_register_static (GST_TYPE_MIXER_TRACK, "GstAlsaMixerTrack",
- &track_info, 0);
- }
-
- return track_type;
-}
-
-static void
-gst_alsa_mixer_track_class_init (gpointer g_class, gpointer class_data)
-{
- parent_class = g_type_class_peek_parent (g_class);
-}
-
-static void
-gst_alsa_mixer_track_init (GstAlsaMixerTrack * alsa_track)
-{
-}
-
-static void
-gst_alsa_mixer_track_update_alsa_capabilities (GstAlsaMixerTrack * alsa_track)
-{
- alsa_track->alsa_flags = 0;
- alsa_track->capture_group = -1;
-
- if (snd_mixer_selem_has_common_volume (alsa_track->element))
- alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_VOLUME;
-
- if (snd_mixer_selem_has_playback_volume (alsa_track->element))
- alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_PVOLUME;
-
- if (snd_mixer_selem_has_capture_volume (alsa_track->element))
- alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_CVOLUME;
-
- if (snd_mixer_selem_has_common_switch (alsa_track->element))
- alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_SWITCH;
-
- if (snd_mixer_selem_has_playback_switch (alsa_track->element))
- alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_PSWITCH;
-
- if (snd_mixer_selem_has_capture_switch (alsa_track->element)) {
- alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_CSWITCH;
-
- if (snd_mixer_selem_has_capture_switch_exclusive (alsa_track->element)) {
- alsa_track->alsa_flags |= GST_ALSA_MIXER_TRACK_CSWITCH_EXCL;
- alsa_track->capture_group =
- snd_mixer_selem_get_capture_group (alsa_track->element);
- }
- }
-
- GST_LOG ("[%s] alsa_flags=0x%08x, capture_group=%d",
- snd_mixer_selem_get_name (alsa_track->element),
- alsa_track->alsa_flags, alsa_track->capture_group);
-}
-
-inline static gboolean
-alsa_track_has_cap (GstAlsaMixerTrack * alsa_track, guint32 flag)
-{
- return ((alsa_track->alsa_flags & flag) != 0);
-}
-
-GstMixerTrack *
-gst_alsa_mixer_track_new (snd_mixer_elem_t * element,
- gint num, gint track_num, gint flags, gboolean sw,
- GstAlsaMixerTrack * shared_mute_track, gboolean append_capture)
-{
- GstAlsaMixerTrack *alsa_track;
- GstMixerTrack *track;
- const gchar *name;
- const gchar *label;
- gint i;
- long min = 0, max = 0;
- const struct
- {
- const gchar orig[12];
- const gchar trans[12];
- } alsa_track_labels[] = {
- {
- "Master", N_("Master")}, {
- "Bass", N_("Bass")}, {
- "Treble", N_("Treble")}, {
- "PCM", N_("PCM")}, {
- "Synth", N_("Synth")}, {
- "Line", N_("Line-in")}, {
- "CD", N_("CD")}, {
- "Mic", N_("Microphone")}, {
- "PC Speaker", N_("PC Speaker")}, {
- "Playback", N_("Playback")}, {
- "Capture", N_("Capture")}
- };
-
- name = snd_mixer_selem_get_name (element);
-
- GST_LOG ("[%s] num=%d,track_num=%d,flags=0x%08x,sw=%s,shared_mute_track=%p",
- name, num, track_num, flags, (sw) ? "true" : "false", shared_mute_track);
-
- track = (GstMixerTrack *) g_object_new (GST_ALSA_MIXER_TRACK_TYPE,
- "untranslated-label", name, NULL);
-
- alsa_track = (GstAlsaMixerTrack *) track;
-
- GST_LOG ("[%s] created new mixer track %p", name, track);
-
- /* This reflects the assumptions used for GstAlsaMixerTrack */
- if (!(!!(flags & GST_MIXER_TRACK_OUTPUT) ^ !!(flags & GST_MIXER_TRACK_INPUT))) {
- GST_ERROR ("Mixer track must be either output or input!");
- g_return_val_if_reached (NULL);
- }
-
- track->flags = flags;
- alsa_track->element = element;
- alsa_track->shared_mute = shared_mute_track;
- alsa_track->track_num = track_num;
- alsa_track->alsa_channels = 0;
-
- gst_alsa_mixer_track_update_alsa_capabilities (alsa_track);
-
- if (flags & GST_MIXER_TRACK_OUTPUT) {
- while (alsa_track->alsa_channels < GST_ALSA_MAX_CHANNELS &&
- snd_mixer_selem_has_playback_channel (element,
- alsa_track->alsa_channels)) {
- alsa_track->alsa_channels++;
- }
- GST_LOG ("[%s] %d output channels", name, alsa_track->alsa_channels);
- } else if (flags & GST_MIXER_TRACK_INPUT) {
- while (alsa_track->alsa_channels < GST_ALSA_MAX_CHANNELS &&
- snd_mixer_selem_has_capture_channel (element,
- alsa_track->alsa_channels)) {
- alsa_track->alsa_channels++;
- }
- GST_LOG ("[%s] %d input channels", name, alsa_track->alsa_channels);
- } else {
- g_assert_not_reached ();
- }
-
- if (sw)
- track->num_channels = 0;
- else
- track->num_channels = alsa_track->alsa_channels;
-
- /* translate the name if we can */
- label = name;
- for (i = 0; i < G_N_ELEMENTS (alsa_track_labels); ++i) {
- if (g_utf8_collate (label, alsa_track_labels[i].orig) == 0) {
- label = _(alsa_track_labels[i].trans);
- break;
- }
- }
-
- if (num == 0) {
- track->label = g_strdup_printf ("%s%s%s", label,
- append_capture ? " " : "", append_capture ? _("Capture") : "");
- } else {
- track->label = g_strdup_printf ("%s%s%s %d", label,
- append_capture ? " " : "", append_capture ? _("Capture") : "", num);
- }
-
- /* set volume information */
- if (track->num_channels > 0) {
- if ((flags & GST_MIXER_TRACK_OUTPUT))
- snd_mixer_selem_get_playback_volume_range (element, &min, &max);
- else
- snd_mixer_selem_get_capture_volume_range (element, &min, &max);
- }
- track->min_volume = (gint) min;
- track->max_volume = (gint) max;
-
- for (i = 0; i < track->num_channels; i++) {
- long tmp = 0;
-
- if (flags & GST_MIXER_TRACK_OUTPUT)
- snd_mixer_selem_get_playback_volume (element, i, &tmp);
- else
- snd_mixer_selem_get_capture_volume (element, i, &tmp);
-
- alsa_track->volumes[i] = (gint) tmp;
- }
-
- gst_alsa_mixer_track_update (alsa_track);
-
- return track;
-}
-
-void
-gst_alsa_mixer_track_update (GstAlsaMixerTrack * alsa_track)
-{
- GstMixerTrack *track = (GstMixerTrack *) alsa_track;
- gint i;
- gint audible = !(track->flags & GST_MIXER_TRACK_MUTE);
-
- if (alsa_track_has_cap (alsa_track, GST_ALSA_MIXER_TRACK_PVOLUME)) {
- /* update playback volume */
- for (i = 0; i < track->num_channels; i++) {
- long vol = 0;
-
- snd_mixer_selem_get_playback_volume (alsa_track->element, i, &vol);
- alsa_track->volumes[i] = (gint) vol;
- }
- }
-
- if (alsa_track_has_cap (alsa_track, GST_ALSA_MIXER_TRACK_CVOLUME)) {
- /* update capture volume */
- for (i = 0; i < track->num_channels; i++) {
- long vol = 0;
-
- snd_mixer_selem_get_capture_volume (alsa_track->element, i, &vol);
- alsa_track->volumes[i] = (gint) vol;
- }
- }
-
- /* Any updates in flags? */
- if (alsa_track_has_cap (alsa_track, GST_ALSA_MIXER_TRACK_PSWITCH)) {
- int v = 0;
-
- audible = 0;
- for (i = 0; i < alsa_track->alsa_channels; ++i) {
- snd_mixer_selem_get_playback_switch (alsa_track->element, i, &v);
- audible += v;
- }
-
- } else if (alsa_track_has_cap (alsa_track, GST_ALSA_MIXER_TRACK_PVOLUME) &&
- track->flags & GST_MIXER_TRACK_MUTE) {
- /* check if user has raised volume with a parallel running application */
-
- for (i = 0; i < track->num_channels; i++) {
- long vol = 0;
-
- snd_mixer_selem_get_playback_volume (alsa_track->element, i, &vol);
-
- if (vol > track->min_volume) {
- audible = 1;
- break;
- }
- }
- }
-
- if (!!(audible) != !(track->flags & GST_MIXER_TRACK_MUTE)) {
- if (audible) {
- track->flags &= ~GST_MIXER_TRACK_MUTE;
-
- if (alsa_track->shared_mute)
- ((GstMixerTrack *) (alsa_track->shared_mute))->flags &=
- ~GST_MIXER_TRACK_MUTE;
- } else {
- track->flags |= GST_MIXER_TRACK_MUTE;
-
- if (alsa_track->shared_mute)
- ((GstMixerTrack *) (alsa_track->shared_mute))->flags |=
- GST_MIXER_TRACK_MUTE;
- }
- }
-
- if (track->flags & GST_MIXER_TRACK_INPUT) {
- gint recording = track->flags & GST_MIXER_TRACK_RECORD;
-
- if (alsa_track_has_cap (alsa_track, GST_ALSA_MIXER_TRACK_CSWITCH)) {
- int v = 0;
-
- recording = 0;
- for (i = 0; i < alsa_track->alsa_channels; ++i) {
- snd_mixer_selem_get_capture_switch (alsa_track->element, i, &v);
- recording += v;
- }
-
- } else if (alsa_track_has_cap (alsa_track, GST_ALSA_MIXER_TRACK_CVOLUME) &&
- !(track->flags & GST_MIXER_TRACK_RECORD)) {
- /* check if user has raised volume with a parallel running application */
-
- for (i = 0; i < track->num_channels; i++) {
- long vol = 0;
-
- snd_mixer_selem_get_capture_volume (alsa_track->element, i, &vol);
-
- if (vol > track->min_volume) {
- recording = 1;
- break;
- }
- }
- }
-
- if (recording)
- track->flags |= GST_MIXER_TRACK_RECORD;
- else
- track->flags &= ~GST_MIXER_TRACK_RECORD;
- }
-
-}