mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-27 10:40:34 +00:00
126 lines
4.3 KiB
C
126 lines
4.3 KiB
C
/* 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/base/gstaggregator.h>
|
|
#include <gst/audio/audio.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 {
|
|
GstAggregator element;
|
|
|
|
/* the next are valid for both int and float */
|
|
GstAudioInfo info;
|
|
|
|
/* counters to keep track of timestamps */
|
|
gint64 offset;
|
|
/* Buffer starting at offset containing block_size samples */
|
|
GstBuffer *current_buffer;
|
|
|
|
/* current caps */
|
|
GstCaps *current_caps;
|
|
gboolean send_caps;
|
|
|
|
/* target caps (set via property) */
|
|
GstCaps *filter_caps;
|
|
|
|
GstClockTime alignment_threshold;
|
|
GstClockTime discont_wait;
|
|
|
|
gint64 base_time;
|
|
|
|
/* Duration of every output buffer */
|
|
GstClockTime output_buffer_duration;
|
|
};
|
|
|
|
struct _GstAudioMixerClass {
|
|
GstAggregatorClass 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 {
|
|
GstAggregatorPad parent;
|
|
|
|
gdouble volume;
|
|
gint volume_i32;
|
|
gint volume_i16;
|
|
gint volume_i8;
|
|
gboolean mute;
|
|
|
|
/* < private > */
|
|
GstBuffer *buffer; /* current buffer we're mixing,
|
|
for comparison with collect.buffer
|
|
to see if we need to update our
|
|
cached values. */
|
|
guint position, size;
|
|
|
|
guint64 output_offset; /* Offset in output segment that
|
|
collect.pos refers to in the
|
|
current buffer. */
|
|
|
|
guint64 next_offset; /* Next expected offset in the input segment */
|
|
|
|
/* Last time we noticed a discont */
|
|
GstClockTime discont_time;
|
|
};
|
|
|
|
struct _GstAudioMixerPadClass {
|
|
GstAggregatorPadClass parent_class;
|
|
};
|
|
|
|
GType gst_audiomixer_pad_get_type (void);
|
|
|
|
G_END_DECLS
|
|
|
|
|
|
#endif /* __GST_AUDIO_MIXER_H__ */
|