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688e5dd7c4
This is a "pseudo" base class. Basically it's a shared instance and class structure and a shared set of function between the two widget. It cannot have it's own type like normal base class since the one instance will implement GtkGLArea while the other implements GtkDrawingAreay. To workaround this, the parent instance and class is a union of both. https://bugzilla.gnome.org/show_bug.cgi?id=752441
94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/*
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* GStreamer
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* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GTK_GST_BASE_WIDGET_H__
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#define __GTK_GST_BASE_WIDGET_H__
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#include <gtk/gtk.h>
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#define GTK_GST_BASE_WIDGET(w) ((GtkGstBaseWidget *)(w))
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#define GTK_GST_BASE_WIDGET_CLASS(k) ((GtkGstBaseWidgetClass *)(k))
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#define GTK_GST_BASE_WIDGET_LOCK(w) g_mutex_lock(&((GtkGstBaseWidget*)(w))->lock)
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#define GTK_GST_BASE_WIDGET_UNLOCK(w) g_mutex_unlock(&((GtkGstBaseWidget*)(w))->lock)
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G_BEGIN_DECLS
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typedef struct _GtkGstBaseWidget GtkGstBaseWidget;
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typedef struct _GtkGstBaseWidgetClass GtkGstBaseWidgetClass;
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struct _GtkGstBaseWidget
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{
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union {
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GtkDrawingArea drawing_area;
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#if GTK_CHECK_VERSION(3, 15, 0)
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GtkGLArea gl_area;
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#endif
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} parent;
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/* properties */
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gboolean force_aspect_ratio;
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gint par_n, par_d;
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gboolean ignore_alpha;
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gint display_width;
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gint display_height;
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gboolean negotiated;
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GstBuffer *buffer;
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GstVideoInfo v_info;
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gboolean new_buffer;
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/* Poor-man virtual */
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void (*reset) (GtkGstBaseWidget * widget);
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/*< private >*/
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GMutex lock;
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GstCaps *caps;
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/* Pending queued idles callback */
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guint draw_id;
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guint resize_id;
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};
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struct _GtkGstBaseWidgetClass
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{
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union {
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GtkDrawingAreaClass drawing_area_class;
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#if GTK_CHECK_VERSION(3, 15, 0)
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GtkGLAreaClass gl_area_class;
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#endif
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} parent_class;
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};
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/* For implementer */
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void gtk_gst_base_widget_class_init (GtkGstBaseWidgetClass * klass);
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void gtk_gst_base_widget_init (GtkGstBaseWidget * widget);
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void gtk_gst_base_widget_finalize (GObject * object);
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/* API */
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gboolean gtk_gst_base_widget_set_caps (GtkGstBaseWidget * widget, GstCaps *caps);
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void gtk_gst_base_widget_set_buffer (GtkGstBaseWidget * widget, GstBuffer *buffer);
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G_END_DECLS
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#endif /* __GTK_GST_BASE_WIDGET_H__ */
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