gst/audiomixer/gstaudiomixer.h

/* GStreamer
 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
 *                    2000 Wim Taymans <wtay@chello.be>
 * Copyright (C) 2013      Sebastian Dröge <slomo@circular-chaos.org>
 *
 * gstaudiomixer.h: Header for GstAudioMixer element
 *
 * 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_AUDIO_MIXER_H__
#define __GST_AUDIO_MIXER_H__

#include <gst/gst.h>
#include <gst/audio/audio.h>
#include <gst/audio/gstaudioaggregator.h>

G_BEGIN_DECLS

#define GST_TYPE_AUDIO_MIXER            (gst_audiomixer_get_type())
#define GST_AUDIO_MIXER(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_MIXER,GstAudioMixer))
#define GST_IS_AUDIO_MIXER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_MIXER))
#define GST_AUDIO_MIXER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_MIXER,GstAudioMixerClass))
#define GST_IS_AUDIO_MIXER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_MIXER))
#define GST_AUDIO_MIXER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_MIXER,GstAudioMixerClass))

typedef struct _GstAudioMixer             GstAudioMixer;
typedef struct _GstAudioMixerClass        GstAudioMixerClass;

typedef struct _GstAudioMixerPad GstAudioMixerPad;
typedef struct _GstAudioMixerPadClass GstAudioMixerPadClass;

/**
 * GstAudioMixer:
 *
 * The audiomixer object structure.
 */
struct _GstAudioMixer {
  GstAudioAggregator element;

  /* target caps (set via property) */
  GstCaps *filter_caps;
};

struct _GstAudioMixerClass {
  GstAudioAggregatorClass parent_class;
};

GType    gst_audiomixer_get_type (void);

#define GST_TYPE_AUDIO_MIXER_PAD            (gst_audiomixer_pad_get_type())
#define GST_AUDIO_MIXER_PAD(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_MIXER_PAD,GstAudioMixerPad))
#define GST_IS_AUDIO_MIXER_PAD(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_MIXER_PAD))
#define GST_AUDIO_MIXER_PAD_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_MIXER_PAD,GstAudioMixerPadClass))
#define GST_IS_AUDIO_MIXER_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_MIXER_PAD))
#define GST_AUDIO_MIXER_PAD_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_MIXER_PAD,GstAudioMixerPadClass))

struct _GstAudioMixerPad {
  GstAudioAggregatorPad parent;

  gdouble volume;
  gint volume_i32;
  gint volume_i16;
  gint volume_i8;
  gboolean mute;
};

struct _GstAudioMixerPadClass {
  GstAudioAggregatorPadClass parent_class;
};

GType gst_audiomixer_pad_get_type (void);

G_END_DECLS


#endif /* __GST_AUDIO_MIXER_H__ */