--- /dev/null
+/* GStreamer Mixer
+ * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * mixertrack.c: mixer track object design
+ *
+ * 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.
+ */
+
+/**
+ * SECTION:gstmixertrack
+ * @short_description: Basic mixer control object (volume slider, switch)
+ * @see_also: GstMixer, GstMixerOptions
+ *
+ * Basic mixer control object (note that it is a GObject and not a GstObject).
+ *
+ * A mixer track represents a single slider control of none, one or more
+ * channels. A mixer track with no channels is usually interpreted as a
+ * on/off switch control.
+ *
+ * Note the presence of both min_volume and max_volume fields. Applications
+ * must not assume that min_volume is 0 or max_volume is any particular
+ * value.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "mixertrack.h"
+#if 0
+enum
+{
+ /* FILL ME */
+ SIGNAL_VOLUME_CHANGED,
+ SIGNAL_RECORD_TOGGLED,
+ SIGNAL_MUTE_TOGGLED,
+ LAST_SIGNAL
+};
+static guint signals[LAST_SIGNAL] = { 0 };
+#endif
+
+enum
+{
+ ARG_0,
+ ARG_LABEL,
+ ARG_UNTRANSLATED_LABEL,
+ ARG_INDEX,
+ ARG_MIN_VOLUME,
+ ARG_MAX_VOLUME,
+ ARG_FLAGS,
+ ARG_NUM_CHANNELS
+};
+
+static void gst_mixer_track_class_init (GstMixerTrackClass * klass);
+static void gst_mixer_track_init (GstMixerTrack * mixer);
+static void gst_mixer_track_dispose (GObject * object);
+
+static void gst_mixer_track_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+static void gst_mixer_track_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+
+static GObjectClass *parent_class = NULL;
+
+GType
+gst_mixer_track_get_type (void)
+{
+ static GType gst_mixer_track_type = 0;
+
+ if (!gst_mixer_track_type) {
+ static const GTypeInfo mixer_track_info = {
+ sizeof (GstMixerTrackClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_mixer_track_class_init,
+ NULL,
+ NULL,
+ sizeof (GstMixerTrack),
+ 0,
+ (GInstanceInitFunc) gst_mixer_track_init,
+ NULL
+ };
+
+ gst_mixer_track_type =
+ g_type_register_static (G_TYPE_OBJECT,
+ "GstMixerTrack", &mixer_track_info, 0);
+ }
+
+ return gst_mixer_track_type;
+}
+
+static void
+gst_mixer_track_class_init (GstMixerTrackClass * klass)
+{
+ GObjectClass *object_klass = G_OBJECT_CLASS (klass);
+
+ parent_class = g_type_class_peek_parent (klass);
+
+ object_klass->get_property = gst_mixer_track_get_property;
+ object_klass->set_property = gst_mixer_track_set_property;
+
+ g_object_class_install_property (object_klass, ARG_LABEL,
+ g_param_spec_string ("label", "Track label",
+ "The label assigned to the track (may be translated)", NULL,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS | G_PARAM_STATIC_STRINGS));
+
+ /**
+ * GstMixerTrack:untranslated-label
+ *
+ * The untranslated label of the mixer track, if available. Mixer track
+ * implementations must set this at construct time. Applications may find
+ * this useful to determine icons for various kind of tracks. However,
+ * applications mustn't make any assumptions about the naming of tracks,
+ * the untranslated labels are purely informational and may change.
+ *
+ * Since: 0.10.13
+ **/
+ g_object_class_install_property (object_klass, ARG_UNTRANSLATED_LABEL,
+ g_param_spec_string ("untranslated-label", "Untranslated track label",
+ "The untranslated label assigned to the track (since 0.10.13)",
+ NULL,
+ G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
+
+ /**
+ * GstMixerTrack:index
+ *
+ * Index of the mixer track, if available. Mixer track implementations
+ * must set this at construct time. This can be used to discern between
+ * multiple tracks with identical labels.
+ *
+ * Since: 0.10.21
+ */
+ g_object_class_install_property (object_klass, ARG_INDEX,
+ g_param_spec_uint ("index", "Index",
+ "Track index", 0, G_MAXUINT,
+ 0, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
+
+ g_object_class_install_property (object_klass, ARG_MIN_VOLUME,
+ g_param_spec_int ("min-volume", "Minimum volume level",
+ "The minimum possible volume level", G_MININT, G_MAXINT,
+ 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (object_klass, ARG_MAX_VOLUME,
+ g_param_spec_int ("max-volume", "Maximum volume level",
+ "The maximum possible volume level", G_MININT, G_MAXINT,
+ 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (object_klass, ARG_FLAGS,
+ g_param_spec_uint ("flags", "Flags",
+ "Flags indicating the type of mixer track",
+ 0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (object_klass, ARG_NUM_CHANNELS,
+ g_param_spec_int ("num-channels", "Number of channels",
+ "The number of channels contained within the track",
+ 0, G_MAXINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+#if 0
+ signals[SIGNAL_RECORD_TOGGLED] =
+ g_signal_new ("record_toggled", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstMixerTrackClass,
+ record_toggled),
+ NULL, NULL, g_cclosure_marshal_VOID__BOOLEAN,
+ G_TYPE_NONE, 1, G_TYPE_BOOLEAN);
+ signals[SIGNAL_MUTE_TOGGLED] =
+ g_signal_new ("mute_toggled", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstMixerTrackClass,
+ mute_toggled),
+ NULL, NULL, g_cclosure_marshal_VOID__BOOLEAN,
+ G_TYPE_NONE, 1, G_TYPE_BOOLEAN);
+ signals[SIGNAL_VOLUME_CHANGED] =
+ g_signal_new ("volume_changed", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstMixerTrackClass,
+ volume_changed),
+ NULL, NULL, g_cclosure_marshal_VOID__POINTER,
+ G_TYPE_NONE, 1, G_TYPE_POINTER);
+#endif
+
+ object_klass->dispose = gst_mixer_track_dispose;
+}
+
+static void
+gst_mixer_track_init (GstMixerTrack * mixer_track)
+{
+ mixer_track->label = NULL;
+ mixer_track->min_volume = mixer_track->max_volume = 0;
+ mixer_track->flags = 0;
+ mixer_track->num_channels = 0;
+}
+
+/* FIXME 0.11: move these as members into the mixer track structure */
+#define MIXER_TRACK_OBJECT_DATA_KEY_UNTRANSLATED_LABEL "gst-mixer-track-ulabel"
+#define MIXER_TRACK_OBJECT_DATA_KEY_INDEX "index"
+
+static void
+gst_mixer_track_get_property (GObject * object, guint prop_id, GValue * value,
+ GParamSpec * pspec)
+{
+ GstMixerTrack *mixer_track;
+
+ mixer_track = GST_MIXER_TRACK (object);
+
+ switch (prop_id) {
+ case ARG_LABEL:
+ g_value_set_string (value, mixer_track->label);
+ break;
+ case ARG_UNTRANSLATED_LABEL:
+ g_value_set_string (value,
+ (const gchar *) g_object_get_data (G_OBJECT (mixer_track),
+ MIXER_TRACK_OBJECT_DATA_KEY_UNTRANSLATED_LABEL));
+ break;
+ case ARG_INDEX:
+ g_value_set_uint (value,
+ GPOINTER_TO_INT (g_object_get_data (G_OBJECT (mixer_track),
+ MIXER_TRACK_OBJECT_DATA_KEY_INDEX)));
+ break;
+ case ARG_MIN_VOLUME:
+ g_value_set_int (value, mixer_track->min_volume);
+ break;
+ case ARG_MAX_VOLUME:
+ g_value_set_int (value, mixer_track->max_volume);
+ break;
+ case ARG_FLAGS:
+ g_value_set_uint (value, (guint32) mixer_track->flags);
+ break;
+ case ARG_NUM_CHANNELS:
+ g_value_set_int (value, mixer_track->num_channels);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_mixer_track_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstMixerTrack *mixer_track;
+
+ mixer_track = GST_MIXER_TRACK (object);
+
+ switch (prop_id) {
+ case ARG_UNTRANSLATED_LABEL:
+ g_object_set_data_full (G_OBJECT (mixer_track),
+ MIXER_TRACK_OBJECT_DATA_KEY_UNTRANSLATED_LABEL,
+ g_value_dup_string (value), (GDestroyNotify) g_free);
+ break;
+ case ARG_INDEX:
+ g_object_set_data (G_OBJECT (mixer_track),
+ MIXER_TRACK_OBJECT_DATA_KEY_INDEX,
+ GINT_TO_POINTER (g_value_get_uint (value)));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_mixer_track_dispose (GObject * object)
+{
+ GstMixerTrack *channel = GST_MIXER_TRACK (object);
+
+ if (channel->label) {
+ g_free (channel->label);
+ channel->label = NULL;
+ }
+
+ if (parent_class->dispose)
+ parent_class->dispose (object);
+}
projects / mafwsubrenderer / blobdiff