1 /* GStreamer 2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public 15 * License along with this library; if not, write to the 16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20 21 #ifndef __GST_VIDEO_FILTER_H__ 22 #define __GST_VIDEO_FILTER_H__ 23 24 #include <gst/base/gstbasetransform.h> 25 #include <gst/video/video.h> 26 27 G_BEGIN_DECLS 28 29 typedef struct _GstVideoFilter GstVideoFilter; 30 typedef struct _GstVideoFilterClass GstVideoFilterClass; 31 32 #define GST_TYPE_VIDEO_FILTER \ 33 (gst_video_filter_get_type()) 34 #define GST_VIDEO_FILTER(obj) \ 35 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_FILTER,GstVideoFilter)) 36 #define GST_VIDEO_FILTER_CLASS(klass) \ 37 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_FILTER,GstVideoFilterClass)) 38 #define GST_VIDEO_FILTER_GET_CLASS(obj) \ 39 (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_VIDEO_FILTER, GstVideoFilterClass)) 40 #define GST_IS_VIDEO_FILTER(obj) \ 41 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_FILTER)) 42 #define GST_IS_VIDEO_FILTER_CLASS(klass) \ 43 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_FILTER)) 44 #define GST_VIDEO_FILTER_CAST(obj) ((GstVideoFilter *)(obj)) 45 46 struct _GstVideoFilter { 47 GstBaseTransform element; 48 49 gboolean negotiated; 50 GstVideoInfo in_info; 51 GstVideoInfo out_info; 52 53 /*< private >*/ 54 gpointer _gst_reserved[GST_PADDING]; 55 }; 56 57 /** 58 * GstVideoFilterClass: 59 * @parent_class: the parent class structure 60 * @set_info: function to be called with the negotiated caps and video infos 61 * @transform_frame: transform a video frame 62 * @transform_frame_ip: transform a video frame in place 63 * 64 * The video filter class structure. 65 */ 66 struct _GstVideoFilterClass { 67 GstBaseTransformClass parent_class; 68 69 gboolean (*set_info) (GstVideoFilter *filter, 70 GstCaps *incaps, GstVideoInfo *in_info, 71 GstCaps *outcaps, GstVideoInfo *out_info); 72 73 /* transform */ 74 GstFlowReturn (*transform_frame) (GstVideoFilter *filter, 75 GstVideoFrame *inframe, GstVideoFrame *outframe); 76 GstFlowReturn (*transform_frame_ip) (GstVideoFilter *trans, GstVideoFrame *frame); 77 78 /*< private >*/ 79 gpointer _gst_reserved[GST_PADDING]; 80 }; 81 82 GST_VIDEO_API 83 GType gst_video_filter_get_type (void); 84 85 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstVideoFilter, gst_object_unref) 86 87 G_END_DECLS 88 89 #endif /* __GST_VIDEO_FILTER_H__ */ 90