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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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856cea1d53
Original commit message from CVS: Rewrote much of videoscale. Now handles most common YUV formats as well as 32 and 24 bit RGB. Only handles "nearest" scaling.
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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_VIDEOSCALE_H__
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#define __GST_VIDEOSCALE_H__
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#include <config.h>
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#include <gst/gst.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define GST_TYPE_VIDEOSCALE \
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(gst_videoscale_get_type())
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#define GST_VIDEOSCALE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEOSCALE,GstVideoscale))
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#define GST_VIDEOSCALE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEOSCALE,GstVideoscale))
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#define GST_IS_VIDEOSCALE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEOSCALE))
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#define GST_IS_VIDEOSCALE_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEOSCALE))
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typedef enum {
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GST_VIDEOSCALE_POINT_SAMPLE,
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GST_VIDEOSCALE_NEAREST,
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GST_VIDEOSCALE_BILINEAR,
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GST_VIDEOSCALE_BICUBIC
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} GstVideoScaleMethod;
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typedef struct _GstVideoscale GstVideoscale;
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typedef struct _GstVideoscaleClass GstVideoscaleClass;
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struct _GstVideoscale {
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GstElement element;
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GstPad *sinkpad,*srcpad;
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gboolean force_size;
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gint forced_width;
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gint forced_height;
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/* video state */
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gboolean inited;
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struct videoscale_format_struct *format;
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gint to_width;
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gint to_height;
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gint from_width;
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gint from_height;
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gboolean passthru;
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GstVideoScaleMethod method;
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/* private */
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gint from_buf_size;
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gint to_buf_size;
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#if 0
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guchar *temp;
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guchar (*filter) (guchar *src, gdouble x, gdouble y, gint sw, gint sh);
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guchar copy_row[8192];
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#endif
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};
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struct _GstVideoscaleClass {
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GstElementClass parent_class;
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};
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GType gst_videoscale_get_type(void);
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void gst_videoscale_setup(GstVideoscale *);
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#define gst_videoscale_scale(scale, src, dest) (scale)->scale_cc((scale), (src), (dest))
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GST_VIDEOSCALE_H__ */
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