1 /* 2 * GStreamer 3 * Copyright (C) 2015 Matthew Waters <matthew@centricular.com> 4 * Copyright (C) 2020 Rafał Dzięgiel <rafostar.github@gmail.com> 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 __GTK_GST_BASE_WIDGET_H__ 23 #define __GTK_GST_BASE_WIDGET_H__ 24 25 #include <gtk/gtk.h> 26 #include <gst/gst.h> 27 #include <gst/video/video.h> 28 29 #if !defined(BUILD_FOR_GTK4) 30 #include <gdk/gdk.h> 31 #endif 32 33 #define GTK_GST_BASE_WIDGET(w) ((GtkGstBaseWidget *)(w)) 34 #define GTK_GST_BASE_WIDGET_CLASS(k) ((GtkGstBaseWidgetClass *)(k)) 35 #define GTK_GST_BASE_WIDGET_LOCK(w) g_mutex_lock(&((GtkGstBaseWidget*)(w))->lock) 36 #define GTK_GST_BASE_WIDGET_UNLOCK(w) g_mutex_unlock(&((GtkGstBaseWidget*)(w))->lock) 37 38 G_BEGIN_DECLS 39 40 typedef struct _GtkGstBaseWidget GtkGstBaseWidget; 41 typedef struct _GtkGstBaseWidgetClass GtkGstBaseWidgetClass; 42 43 struct _GtkGstBaseWidget 44 { 45 union { 46 GtkDrawingArea drawing_area; 47 GtkGLArea gl_area; 48 } parent; 49 50 /* properties */ 51 gboolean force_aspect_ratio; 52 gint par_n, par_d; 53 gboolean ignore_alpha; 54 55 gint display_width; 56 gint display_height; 57 58 gboolean negotiated; 59 GstBuffer *pending_buffer; 60 GstBuffer *buffer; 61 GstVideoInfo v_info; 62 63 /* resize */ 64 gboolean pending_resize; 65 GstVideoInfo pending_v_info; 66 guint display_ratio_num; 67 guint display_ratio_den; 68 69 /*< private >*/ 70 GMutex lock; 71 GWeakRef element; 72 73 /* event controllers */ 74 GtkEventController *key_controller; 75 GtkEventController *motion_controller; 76 GtkGesture *click_gesture; 77 78 /* Pending draw idles callback */ 79 guint draw_id; 80 }; 81 82 struct _GtkGstBaseWidgetClass 83 { 84 union { 85 GtkDrawingAreaClass drawing_area_class; 86 GtkGLAreaClass gl_area_class; 87 } parent_class; 88 }; 89 90 /* For implementer */ 91 void gtk_gst_base_widget_class_init (GtkGstBaseWidgetClass * klass); 92 void gtk_gst_base_widget_init (GtkGstBaseWidget * widget); 93 94 void gtk_gst_base_widget_finalize (GObject * object); 95 96 /* API */ 97 gboolean gtk_gst_base_widget_set_format (GtkGstBaseWidget * widget, GstVideoInfo * v_info); 98 void gtk_gst_base_widget_set_buffer (GtkGstBaseWidget * widget, GstBuffer * buffer); 99 void gtk_gst_base_widget_set_element (GtkGstBaseWidget * widget, GstElement * element); 100 101 G_END_DECLS 102 103 #endif /* __GTK_GST_BASE_WIDGET_H__ */ 104