1 /* GStreamer 2 * Copyright (C) 2006 Nokia <stefan.kost@nokia.com 3 * 4 * videoorientation.h: video flipping and centering interface 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public 17 * License along with this library; if not, write to the 18 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22 #ifndef __GST_VIDEO_ORIENTATION_H__ 23 #define __GST_VIDEO_ORIENTATION_H__ 24 25 #include <gst/gst.h> 26 #include <gst/video/video-prelude.h> 27 28 G_BEGIN_DECLS 29 30 #define GST_TYPE_VIDEO_ORIENTATION \ 31 (gst_video_orientation_get_type ()) 32 #define GST_VIDEO_ORIENTATION(obj) \ 33 (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VIDEO_ORIENTATION, GstVideoOrientation)) 34 #define GST_IS_VIDEO_ORIENTATION(obj) \ 35 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VIDEO_ORIENTATION)) 36 #define GST_VIDEO_ORIENTATION_GET_INTERFACE(inst) \ 37 (G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_VIDEO_ORIENTATION, GstVideoOrientationInterface)) 38 39 /** 40 * GstVideoOrientation: 41 * 42 * Opaque #GstVideoOrientation data structure. 43 */ 44 typedef struct _GstVideoOrientation GstVideoOrientation; 45 typedef struct _GstVideoOrientationInterface GstVideoOrientationInterface; 46 47 /** 48 * GstVideoOrientationInterface: 49 * @iface: parent interface type. 50 * @get_hflip: virtual method to get horizontal flipping state 51 * @get_vflip: virtual method to get vertical flipping state 52 * @get_hcenter: virtual method to get horizontal centering state 53 * @get_vcenter: virtual method to get vertical centering state 54 * @set_hflip: virtual method to set horizontal flipping state 55 * @set_vflip: virtual method to set vertical flipping state 56 * @set_hcenter: virtual method to set horizontal centering state 57 * @set_vcenter: virtual method to set vertical centering state 58 * 59 * #GstVideoOrientationInterface interface. 60 */ 61 struct _GstVideoOrientationInterface { 62 GTypeInterface iface; 63 64 /* FIXME 0.11: fix awkward API? add some kind of get_supported flags thing 65 * and then just return booleans/int from all vfuncs requiring the caller 66 * to check the flags first */ 67 68 /* virtual functions */ 69 gboolean (* get_hflip) (GstVideoOrientation *video_orientation, gboolean *flip); 70 gboolean (* get_vflip) (GstVideoOrientation *video_orientation, gboolean *flip); 71 gboolean (* get_hcenter) (GstVideoOrientation *video_orientation, gint *center); 72 gboolean (* get_vcenter) (GstVideoOrientation *video_orientation, gint *center); 73 74 gboolean (* set_hflip) (GstVideoOrientation *video_orientation, gboolean flip); 75 gboolean (* set_vflip) (GstVideoOrientation *video_orientation, gboolean flip); 76 gboolean (* set_hcenter) (GstVideoOrientation *video_orientation, gint center); 77 gboolean (* set_vcenter) (GstVideoOrientation *video_orientation, gint center); 78 }; 79 80 GST_VIDEO_API 81 GType gst_video_orientation_get_type (void); 82 83 /* virtual class function wrappers */ 84 85 GST_VIDEO_API 86 gboolean gst_video_orientation_get_hflip (GstVideoOrientation *video_orientation, gboolean *flip); 87 88 GST_VIDEO_API 89 gboolean gst_video_orientation_get_vflip (GstVideoOrientation *video_orientation, gboolean *flip); 90 91 GST_VIDEO_API 92 gboolean gst_video_orientation_get_hcenter (GstVideoOrientation *video_orientation, gint *center); 93 94 GST_VIDEO_API 95 gboolean gst_video_orientation_get_vcenter (GstVideoOrientation *video_orientation, gint *center); 96 97 GST_VIDEO_API 98 gboolean gst_video_orientation_set_hflip (GstVideoOrientation *video_orientation, gboolean flip); 99 100 GST_VIDEO_API 101 gboolean gst_video_orientation_set_vflip (GstVideoOrientation *video_orientation, gboolean flip); 102 103 GST_VIDEO_API 104 gboolean gst_video_orientation_set_hcenter (GstVideoOrientation *video_orientation, gint center); 105 106 GST_VIDEO_API 107 gboolean gst_video_orientation_set_vcenter (GstVideoOrientation *video_orientation, gint center); 108 109 G_END_DECLS 110 111 #endif /* __GST_VIDEO_ORIENTATION_H__ */ 112