mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-08 18:39:54 +00:00
b8af1223db
This patch adds a few flags to the mixer and mixerctrl interface to better support OSSv4 (and potentially other backends). Patch By: Garret D'Amore <garrett.damore@sun.com> Signed-Off-By: Jan Schmidt <jan.schmidt@sun.com> API: GST_MIXER_FLAG_HAS_WHITELIST, GST_MIXER_FLAG_GROUPING, API: GST_MIXER_TRACK_NO_RECORD, GST_MIXER_TRACK_NO_MUTE, API: GST_MIXER_TRACK_WHITELIST
128 lines
4.2 KiB
C
128 lines
4.2 KiB
C
/* 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.
|
|
*/
|
|
/**
|
|
* GstMixerTrackFlags:
|
|
* @GST_MIXER_TRACK_INPUT: mixer track is for input
|
|
* @GST_MIXER_TRACK_OUTPUT: mixer track is for output
|
|
* @GST_MIXER_TRACK_MUTE: input or output is muted
|
|
* @GST_MIXER_TRACK_RECORD: input is audible in speakers attached to output
|
|
* (for #GST_MIXER_TRACK_INPUT mixer tracks only)
|
|
* @GST_MIXER_TRACK_MASTER: this mixer track is likely to be the master control
|
|
* @GST_MIXER_TRACK_SOFTWARE: mixer track's' volume control is implemented
|
|
* in software (as opposed to a hardware control)
|
|
* @GST_MIXER_TRACK_NO_RECORD: input track lacks support for recordable.
|
|
* Since: 0.10.23
|
|
* @GST_MIXER_TRACK_NO_MUTE: play track doesn't support mute. Since: 0.10.23
|
|
* @GST_MIXER_TRACK_WHITELIST: track should be displayed "by default" in apps.
|
|
* Since: 0.10.23
|
|
*
|
|
* Mixer track flags.
|
|
*/
|
|
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),
|
|
GST_MIXER_TRACK_NO_RECORD = (1<<6),
|
|
GST_MIXER_TRACK_NO_MUTE = (1<<7),
|
|
GST_MIXER_TRACK_WHITELIST = (1<<8),
|
|
} GstMixerTrackFlags;
|
|
|
|
#define GST_MIXER_TRACK_HAS_FLAG(channel, flag) \
|
|
((channel)->flags & flag)
|
|
|
|
typedef struct _GstMixerTrack GstMixerTrack;
|
|
typedef struct _GstMixerTrackClass GstMixerTrackClass;
|
|
|
|
struct _GstMixerTrack {
|
|
GObject parent;
|
|
|
|
gchar *label;
|
|
|
|
/* FIXME 0.11: flags should be guint32 */
|
|
GstMixerTrackFlags flags;
|
|
|
|
gint num_channels;
|
|
gint min_volume;
|
|
gint max_volume;
|
|
|
|
/* FIXME 0.11: add padding */
|
|
};
|
|
|
|
struct _GstMixerTrackClass {
|
|
GObjectClass parent;
|
|
|
|
#ifdef GST_MIXER_NEED_DEPRECATED
|
|
/* signals (deprecated) */
|
|
void (* mute_toggled) (GstMixerTrack *channel,
|
|
gboolean mute);
|
|
void (* record_toggled) (GstMixerTrack *channel,
|
|
gboolean record);
|
|
void (* volume_changed) (GstMixerTrack *channel,
|
|
gint *volumes);
|
|
#endif /* GST_MIXER_NEED_DEPRECATED */
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
GType gst_mixer_track_get_type (void);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_MIXER_TRACK_H__ */
|