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/* GStreamer Mixer
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* mixertrack.h: mixer track object
*
* 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.
*/
#ifndef __GST_MIXER_TRACK_H__
#define __GST_MIXER_TRACK_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_MIXER_TRACK \
(gst_mixer_track_get_type ())
#define GST_MIXER_TRACK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_MIXER_TRACK, \
GstMixerTrack))
#define GST_MIXER_TRACK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_MIXER_TRACK, \
GstMixerTrackClass))
#define GST_IS_MIXER_TRACK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_MIXER_TRACK))
#define GST_IS_MIXER_TRACK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_MIXER_TRACK))
/*
* Naming:
*
* A track is a single input/output stream (e.g. line-in,
* microphone, etc.). Channels are then single streams
* within a track. A mono stream has one channel, a stereo
* stream has two, etc.
*
* Input tracks can have 'recording' enabled, which means
* that any input will be hearable into the speakers that
* are attached to the output. Mute is obvious. A track
* flagged as master is the master volume track on this
* mixer, which means that setting this track will change
* the hearable volume on any output.
*/
typedef enum {
GST_MIXER_TRACK_INPUT = (1<<0),
GST_MIXER_TRACK_OUTPUT = (1<<1),
GST_MIXER_TRACK_MUTE = (1<<2),
GST_MIXER_TRACK_RECORD = (1<<3),
GST_MIXER_TRACK_MASTER = (1<<4),
GST_MIXER_TRACK_SOFTWARE = (1<<5)
} GstMixerTrackFlags;
#define GST_MIXER_TRACK_HAS_FLAG(channel, flag) \
((channel)->flags & flag)
typedef struct _GstMixerTrack {
GObject parent;
gchar *label;
GstMixerTrackFlags flags;
gint num_channels,
min_volume,
max_volume;
} GstMixerTrack;
typedef struct _GstMixerTrackClass {
GObjectClass parent;
/* signals */
void (* mute_toggled) (GstMixerTrack *channel,
gboolean mute);
void (* record_toggled) (GstMixerTrack *channel,
gboolean record);
void (* volume_changed) (GstMixerTrack *channel,
gint *volumes);
gpointer _gst_reserved[GST_PADDING];
} GstMixerTrackClass;
GType gst_mixer_track_get_type (void);
G_END_DECLS
#endif /* __GST_MIXER_TRACK_H__ */
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