gstreamer/gst/volume/gstvolume.h

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/* -*- c-basic-offset: 2 -*-
* vi:si:et:sw=2:sts=8:ts=8:expandtab
*
* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_VOLUME_H__
#define __GST_VOLUME_H__
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <gst/audio/streamvolume.h>
#include <gst/audio/audio.h>
#include <gst/audio/gstaudiofilter.h>
G_BEGIN_DECLS
#define GST_TYPE_VOLUME \
(gst_volume_get_type())
#define GST_VOLUME(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VOLUME,GstVolume))
#define GST_VOLUME_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VOLUME,GstVolumeClass))
#define GST_IS_VOLUME(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VOLUME))
#define GST_IS_VOLUME_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VOLUME))
typedef struct _GstVolume GstVolume;
typedef struct _GstVolumeClass GstVolumeClass;
/**
* GstVolume:
*
* Opaque data structure.
*/
struct _GstVolume {
GstAudioFilter element;
void (*process)(GstVolume*, gpointer, guint);
void (*process_controlled)(GstVolume*, gpointer, gdouble *, guint, guint);
gboolean mute;
gfloat volume;
gboolean current_mute;
gdouble current_volume;
gint current_vol_i32;
gint current_vol_i24; /* the _i(nt) values get synchronized with the */
gint current_vol_i16; /* the _i(nt) values get synchronized with the */
gint current_vol_i8; /* the _i(nt) values get synchronized with the */
GList *tracklist;
gboolean negotiated;
gboolean *mutes;
guint mutes_count;
gdouble *volumes;
guint volumes_count;
};
struct _GstVolumeClass {
GstAudioFilterClass parent_class;
};
GType gst_volume_get_type (void);
G_END_DECLS
#endif /* __GST_VOLUME_H__ */