/* GStreamer * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifndef __GST_VIDEO_SCALE_H__ #define __GST_VIDEO_SCALE_H__ #include <gst/gst.h> #include <gst/video/video.h> #include <gst/video/gstvideofilter.h> #include "vs_image.h" G_BEGIN_DECLS GST_DEBUG_CATEGORY_EXTERN (video_scale_debug); #define GST_CAT_DEFAULT video_scale_debug #define GST_TYPE_VIDEO_SCALE \ (gst_video_scale_get_type()) #define GST_VIDEO_SCALE(obj) \ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_SCALE,GstVideoScale)) #define GST_VIDEO_SCALE_CLASS(klass) \ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_SCALE,GstVideoScaleClass)) #define GST_IS_VIDEO_SCALE(obj) \ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_SCALE)) #define GST_IS_VIDEO_SCALE_CLASS(klass) \ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_SCALE)) #define GST_VIDEO_SCALE_CAST(obj) ((GstVideoScale *)(obj)) /** * GstVideoScaleMethod: * @GST_VIDEO_SCALE_NEAREST: use nearest neighbour scaling (fast and ugly) * @GST_VIDEO_SCALE_BILINEAR: use bilinear scaling (slower but prettier). * @GST_VIDEO_SCALE_4TAP: use a 4-tap filter for scaling (slow). * @GST_VIDEO_SCALE_LANCZOS: use a multitap Lanczos filter for scaling (slow). * * The videoscale method to use. */ typedef enum { GST_VIDEO_SCALE_NEAREST, GST_VIDEO_SCALE_BILINEAR, GST_VIDEO_SCALE_4TAP, GST_VIDEO_SCALE_LANCZOS } GstVideoScaleMethod; typedef struct _GstVideoScale GstVideoScale; typedef struct _GstVideoScaleClass GstVideoScaleClass; /** * GstVideoScale: * * Opaque data structure */ struct _GstVideoScale { GstVideoFilter element; /* properties */ GstVideoScaleMethod method; gboolean add_borders; double sharpness; double sharpen; gboolean dither; int submethod; double envelope; gint borders_h; gint borders_w; /*< private >*/ guint8 *tmp_buf; }; struct _GstVideoScaleClass { GstVideoFilterClass parent_class; }; G_GNUC_INTERNAL GType gst_video_scale_get_type (void); G_END_DECLS #endif /* __GST_VIDEO_SCALE_H__ */