106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2003> David Schleef <ds@schleef.org>
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* Copyright (C) 2003 Arwed v. Merkatz <v.merkatz@gmx.net>
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* Copyright (C) 2006 Mark Nauwelaerts <manauw@skynet.be>
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* Copyright (C) 2010 United States Government, Joshua M. Doe <oss@nvl.army.mil>
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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_LEVELS_H__
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#define __GST_VIDEO_LEVELS_H__
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#include <gst/video/gstvideofilter.h>
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#include <gst/video/video.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VIDEOLEVELS \
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(gst_videolevels_get_type())
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#define GST_VIDEOLEVELS(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEOLEVELS,GstVideoLevels))
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#define GST_VIDEOLEVELS_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEOLEVELS,GstVideoLevelsClass))
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#define GST_IS_VIDEOLEVELS(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEOLEVELS))
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#define GST_IS_VIDEOLEVELS_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEOLEVELS))
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typedef struct _GstVideoLevels GstVideoLevels;
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typedef struct _GstVideoLevelsClass GstVideoLevelsClass;
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/**
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* GstVideoLevelsAuto:
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* @GST_VIDEOLEVELS_AUTO_OFF: don't perform auto adjustment
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* @GST_VIDEOLEVELS_AUTO_SINGLE: perform auto adjustment once
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* @GST_VIDEOLEVELS_AUTO_CONTINUOUS: perform auto adjustment continuously (defined by "interval" property)
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*
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* Vertical alignment of the text.
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*/
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typedef enum {
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GST_VIDEOLEVELS_AUTO_OFF,
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GST_VIDEOLEVELS_AUTO_SINGLE,
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GST_VIDEOLEVELS_AUTO_CONTINUOUS
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} GstVideoLevelsAuto;
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/**
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* GstVideoLevels:
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* @element: the parent element.
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*
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*
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* The opaque GstVideoLevels data structure.
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*/
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struct _GstVideoLevels
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{
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GstVideoFilter element;
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/* format */
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gint bpp_in;
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GstVideoInfo info_in;
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GstVideoInfo info_out;
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/* properties */
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gint lower_input;
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gint upper_input;
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gint lower_output;
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gint upper_output;
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/* tables */
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gpointer lookup_table;
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GstVideoLevelsAuto auto_adjust;
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guint64 interval;
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gfloat lower_pix_sat;
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gfloat upper_pix_sat;
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gint nbins;
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gint * histogram;
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guint64 last_auto_timestamp;
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};
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struct _GstVideoLevelsClass
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{
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GstVideoFilterClass parent_class;
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};
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GType gst_videolevels_get_type(void);
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G_END_DECLS
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#endif /* __GST_VIDEO_LEVELS_H__ */
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