mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 13:18:52 +00:00
Original commit message from CVS: * configure.ac: * sys/Makefile.am: * sys/oss4/Makefile.am: * sys/oss4/oss4-audio.c: * sys/oss4/oss4-audio.h: * sys/oss4/oss4-mixer-enum.c: * sys/oss4/oss4-mixer-enum.h: * sys/oss4/oss4-mixer-slider.c: * sys/oss4/oss4-mixer-slider.h: * sys/oss4/oss4-mixer-switch.c: * sys/oss4/oss4-mixer-switch.h: * sys/oss4/oss4-mixer.c: * sys/oss4/oss4-mixer.h: * sys/oss4/oss4-property-probe.c: * sys/oss4/oss4-property-probe.h: * sys/oss4/oss4-sink.c: * sys/oss4/oss4-sink.h: * sys/oss4/oss4-soundcard.h: * sys/oss4/oss4-source.c: * sys/oss4/oss4-source.h: Add initial support for OSSv4. Mixer still needs a bit more love, but even magic has its limits.
128 lines
5.4 KiB
C
128 lines
5.4 KiB
C
/* GStreamer OSS4 mixer implementation
|
|
* Copyright (C) 2007-2008 Tim-Philipp Müller <tim centricular net>
|
|
*
|
|
* 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 OSS4_MIXER_H
|
|
#define OSS4_MIXER_H
|
|
|
|
#include <gst/gst.h>
|
|
|
|
#include "oss4-soundcard.h"
|
|
|
|
#define GST_OSS4_MIXER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OSS4_MIXER,GstOss4Mixer))
|
|
#define GST_OSS4_MIXER_CAST(obj) ((GstOss4Mixer *)(obj))
|
|
#define GST_OSS4_MIXER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OSS4_MIXER,GstOss4MixerClass))
|
|
#define GST_IS_OSS4_MIXER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OSS4_MIXER))
|
|
#define GST_IS_OSS4_MIXER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OSS4_MIXER))
|
|
#define GST_TYPE_OSS4_MIXER (gst_oss4_mixer_get_type())
|
|
|
|
#define GST_OSS4_MIXER_IS_OPEN(obj) (GST_OSS4_MIXER(obj)->fd != -1)
|
|
|
|
typedef struct _GstOss4Mixer GstOss4Mixer;
|
|
typedef struct _GstOss4MixerClass GstOss4MixerClass;
|
|
|
|
struct _GstOss4Mixer {
|
|
GstElement element;
|
|
|
|
/*< private >*/
|
|
|
|
/* element bits'n'bops */
|
|
gchar * device;
|
|
|
|
/* mixer details */
|
|
gint fd; /* file descriptor if open, or -1 */
|
|
gchar * device_name; /* device description, or NULL */
|
|
gchar * open_device; /* the device we opened */
|
|
|
|
GList * tracks; /* list of available tracks */
|
|
GList * controls; /* list of available controls */
|
|
gboolean need_update; /* re-read list of available tracks? */
|
|
|
|
oss_mixext last_mixext; /* we keep this around so we can
|
|
* easily check if the mixer
|
|
* interface has changed */
|
|
|
|
GThread * watch_thread; /* thread watching for value changes */
|
|
GCond * watch_cond;
|
|
gint watch_shutdown;
|
|
gint modify_counter; /* from MIXERINFO */
|
|
|
|
/* for property probe interface */
|
|
GList * property_probe_list;
|
|
};
|
|
|
|
struct _GstOss4MixerClass {
|
|
GstElementClass element_class;
|
|
};
|
|
|
|
/* helper struct holding info about one control */
|
|
typedef struct _GstOss4MixerControl GstOss4MixerControl;
|
|
|
|
struct _GstOss4MixerControl {
|
|
oss_mixext mixext;
|
|
GstOss4MixerControl *parent; /* NULL if root */
|
|
GstOss4MixerControl *mute; /* sibling with mute function, or NULL */
|
|
GList *mute_group; /* group of mute controls, or NULL */
|
|
GList *children; /* GstOss4MixerControls (no ownership) */
|
|
|
|
GQuark *enum_vals; /* 0-terminated array of values or NULL */
|
|
int enum_version; /* 0 = list won't change */
|
|
|
|
int last_val; /* last value seen */
|
|
|
|
gboolean is_virtual : 1; /* is a vmix control with dynamic label */
|
|
gboolean is_master : 1;
|
|
gboolean is_slider : 1; /* represent as slider */
|
|
gboolean is_switch : 1; /* represent as switch */
|
|
gboolean is_enum : 1; /* represent as combo/enumeration */
|
|
gboolean no_list : 1; /* enumeration with no list available */
|
|
gboolean is_input : 1; /* is an input-related control */
|
|
gboolean is_output : 1; /* is an output-related control */
|
|
gboolean used : 1; /* whether we know what to do with this */
|
|
|
|
gboolean changed : 1; /* transient flag used by watch thread */
|
|
gboolean list_changed : 1; /* transient flag used by watch thread */
|
|
};
|
|
|
|
/* header says parent=-1 means root, but it can also be parent=ctrl */
|
|
#define MIXEXT_IS_ROOT(me) ((me).parent == -1 || (me).parent == (me).ctrl)
|
|
|
|
#define MIXEXT_IS_SLIDER(me) ((me).type == MIXT_MONOSLIDER || \
|
|
(me).type == MIXT_STEREOSLIDER || (me).type == MIXT_MONOSLIDER16 || \
|
|
(me).type == MIXT_STEREOSLIDER16 || (me).type == MIXT_SLIDER)
|
|
|
|
#define MIXEXT_HAS_DESCRIPTION(me) (((me).flags & MIXF_DESCR) != 0)
|
|
|
|
#define MIXEXT_ENUM_IS_AVAILABLE(me,num) \
|
|
(((me).enum_present[num/8]) & (1 << (num % 8)))
|
|
|
|
|
|
GType gst_oss4_mixer_get_type (void);
|
|
|
|
gboolean gst_oss4_mixer_get_control_val (GstOss4Mixer * mixer,
|
|
GstOss4MixerControl * mc,
|
|
int * val);
|
|
|
|
gboolean gst_oss4_mixer_set_control_val (GstOss4Mixer * mixer,
|
|
GstOss4MixerControl * mc,
|
|
int val);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* OSS4_MIXER_H */
|
|
|