diff options
Diffstat (limited to 'plugins/media-keys/cut-n-paste/gvc-gstreamer-acme-vol.c')
| -rw-r--r-- | plugins/media-keys/cut-n-paste/gvc-gstreamer-acme-vol.c | 405 |
1 files changed, 0 insertions, 405 deletions
diff --git a/plugins/media-keys/cut-n-paste/gvc-gstreamer-acme-vol.c b/plugins/media-keys/cut-n-paste/gvc-gstreamer-acme-vol.c deleted file mode 100644 index 0534ade..0000000 --- a/plugins/media-keys/cut-n-paste/gvc-gstreamer-acme-vol.c +++ /dev/null @@ -1,405 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ - -/* acme-volume.c - - Copyright (C) 2002, 2003 Bastien Nocera - Copyright (C) 2004 Novell, Inc. - Copyright (C) 2009 PERIER Romain <[email protected]> - Copyright (C) 2011 Stefano Karapetsas <[email protected]> - - The Mate 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. - - The Mate 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 the Mate Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, - Boston, MA 02110-1301, USA. - - Author: Bastien Nocera <[email protected]> - Jon Trowbridge <[email protected]> -*/ - -#include "config.h" -#include "gvc-gstreamer-acme-vol.h" - -#include <gst/gst.h> -#include <gst/audio/mixerutils.h> -#include <gst/interfaces/mixer.h> -#include <gst/interfaces/propertyprobe.h> - -#include <gio/gio.h> - -#include <string.h> - -#define TIMEOUT 4 - -#define MATE_SOUND_SCHEMA "org.mate.sound" -#define DEFAULT_MIXER_DEVICE_KEY "default-mixer-device" -#define DEFAULT_MIXER_TRACKS_KEY "default-mixer-tracks" - -#define ACME_VOLUME_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), ACME_TYPE_VOLUME, AcmeVolumePrivate)) - -struct AcmeVolumePrivate { - GstMixer *mixer; - GList *mixer_tracks; - guint timer_id; - gdouble volume; - gboolean mute; - GSettings *settings; -}; - -G_DEFINE_TYPE (AcmeVolume, acme_volume, G_TYPE_OBJECT) - -static gboolean acme_volume_open (AcmeVolume *acme); -static void acme_volume_close (AcmeVolume *acme); -static gboolean acme_volume_close_real (AcmeVolume *self); - -static gpointer acme_volume_object = NULL; - -static void -acme_volume_finalize (GObject *object) -{ - AcmeVolume *self; - - g_return_if_fail (object != NULL); - g_return_if_fail (ACME_IS_VOLUME (object)); - - self = ACME_VOLUME (object); - - if (self->_priv->timer_id != 0) - g_source_remove (self->_priv->timer_id); - acme_volume_close_real (self); - - if (self->_priv->settings != NULL) { - g_object_unref (self->_priv->settings); - self->_priv->settings = NULL; - } - - G_OBJECT_CLASS (acme_volume_parent_class)->finalize (object); -} - -void -acme_volume_set_mute (AcmeVolume *self, gboolean val) -{ - GList *t; - - g_return_if_fail(ACME_IS_VOLUME(self)); - g_return_if_fail(acme_volume_open(self)); - - for (t = self->_priv->mixer_tracks; t != NULL; t = t->next) { - GstMixerTrack *track = GST_MIXER_TRACK (t->data); - gst_mixer_set_mute (self->_priv->mixer, track, val); - } - self->_priv->mute = val; - acme_volume_close (self); -} - -static void -update_state (AcmeVolume * self) -{ - gint *volumes, n; - gdouble vol = 0; - GstMixerTrack *track = GST_MIXER_TRACK (self->_priv->mixer_tracks->data); - - /* update mixer by getting volume */ - volumes = g_new0 (gint, track->num_channels); - gst_mixer_get_volume (self->_priv->mixer, track, volumes); - for (n = 0; n < track->num_channels; n++) - vol += volumes[n]; - g_free (volumes); - vol /= track->num_channels; - vol = 100 * vol / (track->max_volume - track->min_volume); - - /* update mute flag, and volume if not muted */ - if (GST_MIXER_TRACK_HAS_FLAG (track, GST_MIXER_TRACK_MUTE)) - self->_priv->mute = TRUE; - self->_priv->volume = vol; -} - -gboolean -acme_volume_get_mute (AcmeVolume *self) -{ - g_return_val_if_fail(acme_volume_open(self), FALSE); - - update_state (self); - acme_volume_close (self); - - return self->_priv->mute; -} - -gint -acme_volume_get_volume (AcmeVolume *self) -{ - - g_return_val_if_fail(acme_volume_open(self), 0); - - update_state (self); - - acme_volume_close (self); - - return (gint) (self->_priv->volume + 0.5); -} - -void -acme_volume_set_volume (AcmeVolume *self, gint val) -{ - GList *t; - - g_return_if_fail(acme_volume_open(self)); - - val = CLAMP (val, 0, 100); - - for (t = self->_priv->mixer_tracks; t != NULL; t = t->next) { - GstMixerTrack *track = GST_MIXER_TRACK (t->data); - gint *volumes, n; - gdouble scale = (track->max_volume - track->min_volume) / 100.0; - gint vol = (gint) (val * scale + track->min_volume + 0.5); - - volumes = g_new (gint, track->num_channels); - for (n = 0; n < track->num_channels; n++) - volumes[n] = vol; - gst_mixer_set_volume (self->_priv->mixer, track, volumes); - g_free (volumes); - } - - /* update state */ - self->_priv->volume = val; - - acme_volume_close (self); -} - -void -acme_volume_mute_toggle (AcmeVolume *self) -{ - gboolean muted; - - g_return_if_fail (self != NULL); - g_return_if_fail (ACME_IS_VOLUME(self)); - - muted = acme_volume_get_mute(self); - acme_volume_set_mute(self, !muted); -} - -gint -acme_volume_get_threshold (AcmeVolume *self) -{ - GList *t; - gint steps = 101; - - g_return_val_if_fail(acme_volume_open(self), 1); - - for (t = self->_priv->mixer_tracks; t != NULL; t = t->next) { - GstMixerTrack *track = GST_MIXER_TRACK (t->data); - gint track_steps = track->max_volume - track->min_volume; - if (track_steps > 0 && track_steps < steps) - steps = track_steps; - } - - acme_volume_close (self); - - return 100 / steps + 1; -} - -static gboolean -acme_volume_close_real (AcmeVolume *self) -{ - if (self->_priv->mixer != NULL) - { - gst_element_set_state (GST_ELEMENT (self->_priv->mixer), GST_STATE_NULL); - gst_object_unref (GST_OBJECT (self->_priv->mixer)); - g_list_foreach (self->_priv->mixer_tracks, (GFunc) g_object_unref, NULL); - g_list_free (self->_priv->mixer_tracks); - self->_priv->mixer = NULL; - self->_priv->mixer_tracks = NULL; - } - - self->_priv->timer_id = 0; - return FALSE; -} - -/* - * _acme_set_mixer - * @mixer A pointer to mixer element - * @data A pointer to user data (AcmeVolume instance to be modified) - * @return A gboolean indicating success if Master track was found, failed otherwises. - */ -static gboolean -_acme_set_mixer(GstMixer *mixer, gpointer user_data) -{ - const GList *tracks; - - for (tracks = gst_mixer_list_tracks (mixer); tracks != NULL; tracks = tracks->next) { - GstMixerTrack *track = GST_MIXER_TRACK (tracks->data); - - if (GST_MIXER_TRACK_HAS_FLAG (track, GST_MIXER_TRACK_MASTER)) { - AcmeVolume *self; - - self = ACME_VOLUME (user_data); - - self->_priv->mixer = mixer; - self->_priv->mixer_tracks = g_list_append (self->_priv->mixer_tracks, g_object_ref (track)); - return TRUE; - } - - continue; - } - - return FALSE; -} - -/* This is a modified version of code from gnome-media's gst-mixer */ -static gboolean -acme_volume_open (AcmeVolume *self) -{ - gchar *mixer_device, **factory_and_device = NULL; - GList *mixer_list; - - if (self->_priv->timer_id != 0) { - g_source_remove (self->_priv->timer_id); - self->_priv->timer_id = 0; - return TRUE; - } - - mixer_device = g_settings_get_string (self->_priv->settings, DEFAULT_MIXER_DEVICE_KEY); - if (mixer_device != NULL) - factory_and_device = g_strsplit (mixer_device, ":", 2); - - if (factory_and_device != NULL && factory_and_device[0] != NULL) { - GstElement *element; - - element = gst_element_factory_make (factory_and_device[0], NULL); - - if (element != NULL) { - if (factory_and_device[1] != NULL && - g_object_class_find_property (G_OBJECT_GET_CLASS (element), "device")) - g_object_set (G_OBJECT (element), "device", factory_and_device[1], NULL); - gst_element_set_state (element, GST_STATE_READY); - - if (GST_IS_MIXER (element)) - self->_priv->mixer = GST_MIXER (element); - else { - gst_element_set_state (element, GST_STATE_NULL); - gst_object_unref (element); - } - } - } - - g_free (mixer_device); - g_strfreev (factory_and_device); - - if (self->_priv->mixer != NULL) { - const GList *m; - GSList *tracks, *t; - - /* Try to use tracks saved in GSettings - Note: errors need to be treated , for example if the user set a non type list for this key - or if the elements type_list are not "matched" */ - gchar **settings_list; - settings_list = g_settings_get_strv (self->_priv->settings, DEFAULT_MIXER_TRACKS_KEY); - if (settings_list != NULL) { - gint i; - for (i = 0; i < G_N_ELEMENTS (settings_list); i++) { - if (settings_list[i] != NULL) - tracks = g_slist_append (tracks, g_strdup (settings_list[i])); - } - g_strfreev (settings_list); - } - - /* We use these tracks ONLY if they are supported on the system with the following mixer */ - for (m = gst_mixer_list_tracks (self->_priv->mixer); m != NULL; m = m->next) { - GstMixerTrack *track = GST_MIXER_TRACK (m->data); - - for (t = tracks; t != NULL; t = t->next) - if (!strcmp (t->data, track->label)) - self->_priv->mixer_tracks = g_list_append (self->_priv->mixer_tracks, g_object_ref (track)); - - } - - g_slist_foreach (tracks, (GFunc)g_free, NULL); - g_slist_free (tracks); - - /* If no track stored in GSettings is avaiable try to use Master track */ - if (self->_priv->mixer_tracks == NULL) { - for (m = gst_mixer_list_tracks (self->_priv->mixer); m != NULL; m = m->next) { - GstMixerTrack *track = GST_MIXER_TRACK (m->data); - - if (GST_MIXER_TRACK_HAS_FLAG (track, GST_MIXER_TRACK_MASTER)) { - self->_priv->mixer_tracks = g_list_append (self->_priv->mixer_tracks, g_object_ref (track)); - break; - } - } - } - - if (self->_priv->mixer_tracks != NULL) - return TRUE; - else { - gst_element_set_state (GST_ELEMENT (self->_priv->mixer), GST_STATE_NULL); - gst_object_unref (self->_priv->mixer); - } - } - - /* Go through all elements of a certain class and check whether - * they implement a mixer. If so, walk through the tracks and look - * for first one named "volume". - * - * We should probably do something intelligent if we don't find an - * appropriate mixer/track. But now we do something stupid... - * everything just becomes a no-op. - */ - mixer_list = gst_audio_default_registry_mixer_filter (_acme_set_mixer, - TRUE, - self); - - if (mixer_list == NULL) - return FALSE; - - /* do not unref the mixer as we keep the ref for self->priv->mixer */ - g_list_free (mixer_list); - - return TRUE; -} - -static void -acme_volume_close (AcmeVolume *self) -{ - self->_priv->timer_id = g_timeout_add_seconds (TIMEOUT, - (GSourceFunc) acme_volume_close_real, self); -} - -static void -acme_volume_init (AcmeVolume *self) -{ - self->_priv = ACME_VOLUME_GET_PRIVATE (self); - self->_priv->settings = g_settings_new (MATE_SOUND_SCHEMA); -} - -static void -acme_volume_class_init (AcmeVolumeClass *klass) -{ - G_OBJECT_CLASS (klass)->finalize = acme_volume_finalize; - - gst_init (NULL, NULL); - - g_type_class_add_private (klass, sizeof (AcmeVolumePrivate)); -} - -/* acme_volume_new - * @return A singleton instance of type AcmeVolume - */ -AcmeVolume * -acme_volume_new (void) -{ - if (acme_volume_object == NULL) { - acme_volume_object = g_object_new (ACME_TYPE_VOLUME, NULL); - return ACME_VOLUME(acme_volume_object); - } - g_object_ref(acme_volume_object); - return ACME_VOLUME(acme_volume_object); -} |