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81 lines
2.9 KiB
C
81 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) 2020 Thibault Saunier <tsaunier@igalia.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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_VIDEO_CONVERT_SCALE_H__
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#define __GST_VIDEO_CONVERT_SCALE_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/video/gstvideofilter.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VIDEO_CONVERT_SCALE (gst_video_convert_scale_get_type())
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#define GST_VIDEO_CONVERT_SCALE_CAST(obj) ((GstVideoConvertScale *)(obj))
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G_DECLARE_DERIVABLE_TYPE (GstVideoConvertScale, gst_video_convert_scale, GST, VIDEO_CONVERT_SCALE,
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GstVideoFilter)
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struct _GstVideoConvertScaleClass
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{
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GstVideoFilterClass parent;
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gboolean any_memory;
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};
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/**
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* GstVideoScaleMethod:
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* @GST_VIDEO_SCALE_NEAREST: use nearest neighbour scaling (fast and ugly)
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* @GST_VIDEO_SCALE_BILINEAR: use 2-tap bilinear scaling (slower but prettier).
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* @GST_VIDEO_SCALE_4TAP: use a 4-tap sinc filter for scaling (slow).
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* @GST_VIDEO_SCALE_LANCZOS: use a multitap Lanczos filter for scaling (slow).
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* @GST_VIDEO_SCALE_BILINEAR2: use a multitap bilinear filter
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* @GST_VIDEO_SCALE_SINC: use a multitap sinc filter
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* @GST_VIDEO_SCALE_HERMITE: use a multitap bicubic Hermite filter
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* @GST_VIDEO_SCALE_SPLINE: use a multitap bicubic spline filter
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* @GST_VIDEO_SCALE_CATROM: use a multitap bicubic Catmull-Rom filter
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* @GST_VIDEO_SCALE_MITCHELL: use a multitap bicubic Mitchell filter
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*
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* The videoscale method to use.
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*/
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typedef enum {
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GST_VIDEO_SCALE_NEAREST,
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GST_VIDEO_SCALE_BILINEAR,
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GST_VIDEO_SCALE_4TAP,
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GST_VIDEO_SCALE_LANCZOS,
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GST_VIDEO_SCALE_BILINEAR2,
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GST_VIDEO_SCALE_SINC,
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GST_VIDEO_SCALE_HERMITE,
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GST_VIDEO_SCALE_SPLINE,
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GST_VIDEO_SCALE_CATROM,
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GST_VIDEO_SCALE_MITCHELL
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} GstVideoScaleMethod;
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void gst_video_convert_scale_set_scales (GstVideoConvertScale *self, gboolean scales);
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void gst_video_convert_scale_set_converts (GstVideoConvertScale *self, gboolean converts);
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gboolean gst_video_convert_scale_get_scales (GstVideoConvertScale *self);
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gboolean gst_video_convert_scale_get_converts (GstVideoConvertScale *self);
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GST_ELEMENT_REGISTER_DECLARE (videoconvertscale);
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G_END_DECLS
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#endif /* __GST_VIDEO_CONVERT_SCALE_H__ */
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