mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-04 05:35:53 +00:00
978bcd7181
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
74 lines
2.6 KiB
C
74 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__ */
|