1 /* ALSA mixer track object.
2 * Copyright (C) 2003 Leif Johnson <leif@ambient.2y.net>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the Free
16 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __GST_ALSA_MIXER_TRACK_H__
21 #define __GST_ALSA_MIXER_TRACK_H__
25 #include <gst/audio/mixertrack.h>
31 #define GST_ALSA_MIXER_TRACK_TYPE (gst_alsa_mixer_track_get_type ())
32 #define GST_ALSA_MIXER_TRACK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_MIXER_TRACK,GstAlsaMixerTrack))
33 #define GST_ALSA_MIXER_TRACK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSA_MIXER_TRACK,GstAlsaMixerTrackClass))
34 #define GST_IS_ALSA_MIXER_TRACK(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALSA_MIXER_TRACK))
35 #define GST_IS_ALSA_MIXER_TRACK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSA_MIXER_TRACK))
36 #define GST_TYPE_ALSA_MIXER_TRACK (gst_alsa_mixer_track_get_type())
38 typedef struct _GstAlsaMixerTrack GstAlsaMixerTrack;
39 typedef struct _GstAlsaMixerTrackClass GstAlsaMixerTrackClass;
41 #define GST_ALSA_MIXER_TRACK_VOLUME (1<<0) /* common volume */
42 #define GST_ALSA_MIXER_TRACK_PVOLUME (1<<1)
43 #define GST_ALSA_MIXER_TRACK_CVOLUME (1<<2)
44 #define GST_ALSA_MIXER_TRACK_SWITCH (1<<3) /* common switch */
45 #define GST_ALSA_MIXER_TRACK_PSWITCH (1<<4)
46 #define GST_ALSA_MIXER_TRACK_CSWITCH (1<<5)
47 #define GST_ALSA_MIXER_TRACK_CSWITCH_EXCL (1<<6)
49 #define GST_ALSA_MAX_CHANNELS (SND_MIXER_SCHN_LAST+1)
51 struct _GstAlsaMixerTrack {
53 snd_mixer_elem_t *element; /* the ALSA mixer element for this track */
54 GstAlsaMixerTrack *shared_mute;
56 guint32 alsa_flags; /* alsa track capabilities */
59 gint volumes[GST_ALSA_MAX_CHANNELS];
62 struct _GstAlsaMixerTrackClass {
63 GstMixerTrackClass parent;
66 GType gst_alsa_mixer_track_get_type (void);
67 GstMixerTrack * gst_alsa_mixer_track_new (snd_mixer_elem_t * element,
71 gboolean sw, /* is simple switch? */
72 GstAlsaMixerTrack * shared_mute_track,
73 gboolean label_append_capture);
74 void gst_alsa_mixer_track_update (GstAlsaMixerTrack * alsa_track);
79 #endif /* __GST_ALSA_MIXER_TRACK_H__ */