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121 lines
3.3 KiB
C
121 lines
3.3 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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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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gdouble segment_rate;
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void (*blend) (guint8 * src, gint xpos, gint ypos, gint src_width, gint src_height, gdouble src_alpha,
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guint8 * dest, gint dest_width, gint dest_height);
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void (*fill_checker) (guint8 * dest, gint width, gint height);
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void (*fill_color) (guint8 * dest, gint width, gint height, gint colY, gint colU, gint colV);
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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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