gstreamer/gst/videoframe_audiolevel/gstvideoframe-audiolevel.h
Vivia Nikolaidou 978bcd7181 alevel: New audio/video level element
The videoframe-audiolevel element acts like a synchronized audio/video "level"
element. For each video frame, it posts a level-style message containing the
RMS value of the corresponding audio frames. This element needs both video and
audio to pass through it. Furthermore, it needs a queue after its video
source.

https://bugzilla.gnome.org/show_bug.cgi?id=748259
2015-12-02 12:52:57 +02:00

73 lines
2.6 KiB
C

/*
* GStreamer
* Copyright (C) 2015 Vivia Nikolaidou <vivia@toolsonair.com>
*
* 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_VIDEOFRAME_AUDIOLEVEL_H__
#define __GST_VIDEOFRAME_AUDIOLEVEL_H__
#include <gst/gst.h>
#include <gst/audio/audio.h>
G_BEGIN_DECLS
#define GST_TYPE_VIDEOFRAME_AUDIOLEVEL (gst_videoframe_audiolevel_get_type())
#define GST_VIDEOFRAME_AUDIOLEVEL(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEOFRAME_AUDIOLEVEL,GstVideoFrameAudioLevel))
#define GST_IS_VIDEOFRAME_AUDIOLEVEL(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEOFRAME_AUDIOLEVEL))
#define GST_VIDEOFRAME_AUDIOLEVEL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_VIDEOFRAME_AUDIOLEVEL,GstVideoFrameAudioLevelClass))
#define GST_IS_VIDEOFRAME_AUDIOLEVEL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_VIDEOFRAME_AUDIOLEVEL))
#define GST_VIDEOFRAME_AUDIOLEVEL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_VIDEOFRAME_AUDIOLEVEL,GstVideoFrameAudioLevelClass))
typedef struct _GstVideoFrameAudioLevel GstVideoFrameAudioLevel;
typedef struct _GstVideoFrameAudioLevelClass GstVideoFrameAudioLevelClass;
struct _GstVideoFrameAudioLevel
{
GstElement parent;
GstPad *asrcpad, *asinkpad, *vsrcpad, *vsinkpad;
GstAudioInfo ainfo;
gdouble *CS; /* normalized Cumulative Square */
GstSegment asegment, vsegment;
void (*process) (gpointer, guint, guint, gdouble *);
GQueue vtimeq;
GstAdapter *adapter;
GstClockTime first_time;
guint total_frames;
guint64 next_offset, alignment_threshold, discont_time, discont_wait;
gboolean video_eos_flag;
gboolean audio_flush_flag;
gboolean shutdown_flag;
GCond cond;
GMutex mutex;
};
struct _GstVideoFrameAudioLevelClass
{
GstElementClass parent_class;
};
GType gst_videoframe_audiolevel_get_type (void);
G_END_DECLS
#endif /* __GST_VIDEOFRAME_AUDIOLEVEL_H__ */