1 /* GStreamer video frame cropping to aspect-ratio 2 * Copyright (C) 2009 Thijs Vermeir <thijsvermeir@gmail.com> 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 #ifndef __GST_ASPECT_RATIO_CROP_H__ 21 #define __GST_ASPECT_RATIO_CROP_H__ 22 23 #include <gst/gstbin.h> 24 25 G_BEGIN_DECLS 26 27 #define GST_TYPE_ASPECT_RATIO_CROP \ 28 (gst_aspect_ratio_crop_get_type()) 29 #define GST_ASPECT_RATIO_CROP(obj) \ 30 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ASPECT_RATIO_CROP,GstAspectRatioCrop)) 31 #define GST_ASPECT_RATIO_CROP_CLASS(klass) \ 32 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ASPECT_RATIO_CROP,GstAspectRatioCropClass)) 33 #define GST_IS_ASPECT_RATIO_CROP(obj) \ 34 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ASPECT_RATIO_CROP)) 35 #define GST_IS_ASPECT_RATIO_CROP_CLASS(klass) \ 36 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ASPECT_RATIO_CROP)) 37 38 typedef struct _GstAspectRatioCrop GstAspectRatioCrop; 39 typedef struct _GstAspectRatioCropClass GstAspectRatioCropClass; 40 41 struct _GstAspectRatioCrop 42 { 43 GstBin parent; 44 45 /* our videocrop element */ 46 GstElement *videocrop; 47 48 GstPad *sink; 49 50 /* target aspect ratio */ 51 gint ar_num; /* if < 1 then don't change ar */ 52 gint ar_denom; 53 54 GstCaps *renegotiation_caps; 55 56 GMutex crop_lock; 57 }; 58 59 struct _GstAspectRatioCropClass 60 { 61 GstBinClass parent_class; 62 }; 63 64 GType gst_aspect_ratio_crop_get_type (void); 65 66 G_END_DECLS 67 68 #endif /* __GST_ASPECT_RATIO_CROP_H__ */ 69 70