mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-22 08:17:01 +00:00
abe4291d7a
Original commit message from CVS: * gst/videomixer/videomixer.c: (gst_videomixer_reset), (gst_videomixer_init), (gst_videomixer_query_duration), (gst_videomixer_query_latency), (gst_videomixer_query), (gst_videomixer_blend_buffers): * gst/videomixer/videomixer.h: Implement position (in time), duration and latency queries.
108 lines
2.9 KiB
C
108 lines
2.9 KiB
C
/* Generic video mixer plugin
|
|
* Copyright (C) 2008 Wim Taymans <wim@fluendo.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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifndef __GST_VIDEO_MIXER_H__
|
|
#define __GST_VIDEO_MIXER_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include "videomixerpad.h"
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_VIDEO_MIXER (gst_videomixer_get_type())
|
|
#define GST_VIDEO_MIXER(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_MIXER, GstVideoMixer))
|
|
#define GST_VIDEO_MIXER_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_MIXER, GstVideoMixerClass))
|
|
#define GST_IS_VIDEO_MIXER(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_MIXER))
|
|
#define GST_IS_VIDEO_MIXER_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_MIXER))
|
|
|
|
typedef struct _GstVideoMixer GstVideoMixer;
|
|
typedef struct _GstVideoMixerClass GstVideoMixerClass;
|
|
|
|
/**
|
|
* GstVideoMixerBackground:
|
|
* @VIDEO_MIXER_BACKGROUND_CHECKER: checker pattern background
|
|
* @VIDEO_MIXER_BACKGROUND_BLACK: solid color black background
|
|
* @VIDEO_MIXER_BACKGROUND_WHITE: solid color white background
|
|
*
|
|
* The different backgrounds videomixer can blend over.
|
|
*/
|
|
typedef enum
|
|
{
|
|
VIDEO_MIXER_BACKGROUND_CHECKER,
|
|
VIDEO_MIXER_BACKGROUND_BLACK,
|
|
VIDEO_MIXER_BACKGROUND_WHITE
|
|
}
|
|
GstVideoMixerBackground;
|
|
|
|
/**
|
|
* GstVideoMixer:
|
|
*
|
|
* The opaque #GstVideoMixer structure.
|
|
*/
|
|
struct _GstVideoMixer
|
|
{
|
|
GstElement element;
|
|
|
|
/* pad */
|
|
GstPad *srcpad;
|
|
|
|
/* Lock to prevent the state to change while blending */
|
|
GMutex *state_lock;
|
|
/* Sink pads using Collect Pads from core's base library */
|
|
GstCollectPads *collect;
|
|
/* sinkpads, a GSList of GstVideoMixerPads */
|
|
GSList *sinkpads;
|
|
|
|
gint numpads;
|
|
|
|
GstClockTime last_ts;
|
|
|
|
/* the master pad */
|
|
GstVideoMixerPad *master;
|
|
|
|
gint in_width, in_height;
|
|
gint out_width, out_height;
|
|
gboolean setcaps;
|
|
gboolean sendseg;
|
|
|
|
GstVideoMixerBackground background;
|
|
|
|
gint fps_n;
|
|
gint fps_d;
|
|
|
|
/* Next available sinkpad index */
|
|
gint next_sinkpad;
|
|
|
|
/* sink event handling */
|
|
GstPadEventFunction collect_event;
|
|
guint64 segment_position;
|
|
gdouble segment_rate;
|
|
};
|
|
|
|
struct _GstVideoMixerClass
|
|
{
|
|
GstElementClass parent_class;
|
|
};
|
|
|
|
G_END_DECLS
|
|
#endif /* __GST_VIDEO_MIXER_H__ */
|