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daa52708b3
This drops frames if they're too late anyway before blending and all that starts but QoS events are not forwarded upstream. In the future the QoS events should be transformed somehow and forwarded upstream.
127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
/* Generic video mixer plugin
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* Copyright (C) 2008 Wim Taymans <wim@fluendo.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_VIDEO_MIXER_H__
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#define __GST_VIDEO_MIXER_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include "videomixerpad.h"
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#include "blend.h"
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GST_DEBUG_CATEGORY_EXTERN (gst_videomixer_debug);
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#define GST_CAT_DEFAULT gst_videomixer_debug
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G_BEGIN_DECLS
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#define GST_TYPE_VIDEO_MIXER (gst_videomixer_get_type())
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#define GST_VIDEO_MIXER(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_MIXER, GstVideoMixer))
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#define GST_VIDEO_MIXER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_MIXER, GstVideoMixerClass))
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#define GST_IS_VIDEO_MIXER(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_MIXER))
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#define GST_IS_VIDEO_MIXER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_MIXER))
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typedef struct _GstVideoMixer GstVideoMixer;
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typedef struct _GstVideoMixerClass GstVideoMixerClass;
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/**
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* GstVideoMixerBackground:
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* @VIDEO_MIXER_BACKGROUND_CHECKER: checker pattern background
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* @VIDEO_MIXER_BACKGROUND_BLACK: solid color black background
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* @VIDEO_MIXER_BACKGROUND_WHITE: solid color white background
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*
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* The different backgrounds videomixer can blend over.
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*/
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typedef enum
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{
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VIDEO_MIXER_BACKGROUND_CHECKER,
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VIDEO_MIXER_BACKGROUND_BLACK,
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VIDEO_MIXER_BACKGROUND_WHITE
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}
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GstVideoMixerBackground;
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/**
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* GstVideoMixer:
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*
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* The opaque #GstVideoMixer structure.
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*/
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struct _GstVideoMixer
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{
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GstElement element;
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/* pad */
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GstPad *srcpad;
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/* Lock to prevent the state to change while blending */
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GMutex *state_lock;
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/* Sink pads using Collect Pads from core's base library */
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GstCollectPads *collect;
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/* sinkpads, a GSList of GstVideoMixerPads */
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GSList *sinkpads;
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gint numpads;
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GstClockTime last_ts;
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/* the master pad */
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GstVideoMixerPad *master;
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GstVideoFormat fmt;
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gint in_width, in_height;
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gint out_width, out_height;
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gboolean setcaps;
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gboolean sendseg;
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GstVideoMixerBackground background;
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gint fps_n;
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gint fps_d;
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/* Next available sinkpad index */
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gint next_sinkpad;
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/* sink event handling */
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GstPadEventFunction collect_event;
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guint64 segment_position;
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/* Current downstream segment */
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GstSegment segment;
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/* QoS stuff */
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gdouble proportion;
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GstClockTime earliest_time;
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BlendFunction blend;
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FillCheckerFunction fill_checker;
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FillColorFunction fill_color;
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};
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struct _GstVideoMixerClass
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{
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GstElementClass parent_class;
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};
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G_END_DECLS
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#endif /* __GST_VIDEO_MIXER_H__ */
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