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5f73998ac8
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.
129 lines
5.4 KiB
C
129 lines
5.4 KiB
C
/* GStreamer OSS4 mixer implementation
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* Copyright (C) 2007-2008 Tim-Philipp Müller <tim centricular net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef OSS4_MIXER_H
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#define OSS4_MIXER_H
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#include <gst/gst.h>
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#include "oss4-soundcard.h"
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#define GST_OSS4_MIXER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OSS4_MIXER,GstOss4Mixer))
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#define GST_OSS4_MIXER_CAST(obj) ((GstOss4Mixer *)(obj))
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#define GST_OSS4_MIXER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OSS4_MIXER,GstOss4MixerClass))
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#define GST_IS_OSS4_MIXER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OSS4_MIXER))
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#define GST_IS_OSS4_MIXER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OSS4_MIXER))
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#define GST_TYPE_OSS4_MIXER (gst_oss4_mixer_get_type())
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#define GST_OSS4_MIXER_IS_OPEN(obj) (GST_OSS4_MIXER(obj)->fd != -1)
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typedef struct _GstOss4Mixer GstOss4Mixer;
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typedef struct _GstOss4MixerClass GstOss4MixerClass;
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struct _GstOss4Mixer {
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GstElement element;
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/*< private >*/
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/* element bits'n'bops */
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gchar * device;
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/* mixer details */
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gint fd; /* file descriptor if open, or -1 */
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gchar * device_name; /* device description, or NULL */
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gchar * open_device; /* the device we opened */
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GList * tracks; /* list of available tracks */
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GList * controls; /* list of available controls */
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gboolean need_update; /* re-read list of available tracks? */
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oss_mixext last_mixext; /* we keep this around so we can
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* easily check if the mixer
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* interface has changed */
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GThread * watch_thread; /* thread watching for value changes */
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GCond * watch_cond;
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gint watch_shutdown;
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gint modify_counter; /* from MIXERINFO */
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/* for property probe interface */
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GList * property_probe_list;
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};
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struct _GstOss4MixerClass {
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GstElementClass element_class;
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};
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/* helper struct holding info about one control */
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typedef struct _GstOss4MixerControl GstOss4MixerControl;
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struct _GstOss4MixerControl {
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oss_mixext mixext;
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GstOss4MixerControl *parent; /* NULL if root */
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GstOss4MixerControl *mute; /* sibling with mute function, or NULL */
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GList *mute_group; /* group of mute controls, or NULL */
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GList *children; /* GstOss4MixerControls (no ownership) */
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GQuark *enum_vals; /* 0-terminated array of values or NULL */
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int enum_version; /* 0 = list won't change */
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int last_val; /* last value seen */
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gboolean is_virtual : 1; /* is a vmix control with dynamic label */
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gboolean is_master : 1;
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gboolean is_slider : 1; /* represent as slider */
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gboolean is_switch : 1; /* represent as switch */
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gboolean is_enum : 1; /* represent as combo/enumeration */
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gboolean no_list : 1; /* enumeration with no list available */
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gboolean is_input : 1; /* is an input-related control */
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gboolean is_output : 1; /* is an output-related control */
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gboolean used : 1; /* whether we know what to do with this */
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gboolean changed : 1; /* transient flag used by watch thread */
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gboolean list_changed : 1; /* transient flag used by watch thread */
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};
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/* header says parent=-1 means root, but it can also be parent=ctrl */
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#define MIXEXT_IS_ROOT(me) ((me).parent == -1 || (me).parent == (me).ctrl)
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#define MIXEXT_IS_SLIDER(me) ((me).type == MIXT_MONOSLIDER || \
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(me).type == MIXT_STEREOSLIDER || (me).type == MIXT_MONOSLIDER16 || \
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(me).type == MIXT_STEREOSLIDER16 || (me).type == MIXT_SLIDER)
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#define MIXEXT_HAS_DESCRIPTION(me) (((me).flags & MIXF_DESCR) != 0)
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#define MIXEXT_ENUM_IS_AVAILABLE(me,num) \
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(((me).enum_present[num/8]) & (1 << (num % 8)))
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GType gst_oss4_mixer_get_type (void);
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gboolean gst_oss4_mixer_get_control_val (GstOss4Mixer * mixer,
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GstOss4MixerControl * mc,
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int * val);
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gboolean gst_oss4_mixer_set_control_val (GstOss4Mixer * mixer,
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GstOss4MixerControl * mc,
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int val);
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G_END_DECLS
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#endif /* OSS4_MIXER_H */
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