gstreamer/subprojects/gst-plugins-good/ext/gtk/gtkgstbasewidget.h
Bastien Nocera ec77a1aac8 gtk: Add a way to queue redrawing the base GTK widget
This will be used to request a redraw of the GTK widget should the
display be changed using properties not directly handled by the base GTK
widget, but by one of its descendants.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1618>
2022-02-10 23:33:02 +00:00

102 lines
3.2 KiB
C

/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GTK_GST_BASE_WIDGET_H__
#define __GTK_GST_BASE_WIDGET_H__
#include <gtk/gtk.h>
#include <gst/gst.h>
#include <gst/video/video.h>
#define GTK_GST_BASE_WIDGET(w) ((GtkGstBaseWidget *)(w))
#define GTK_GST_BASE_WIDGET_CLASS(k) ((GtkGstBaseWidgetClass *)(k))
#define GTK_GST_BASE_WIDGET_LOCK(w) g_mutex_lock(&((GtkGstBaseWidget*)(w))->lock)
#define GTK_GST_BASE_WIDGET_UNLOCK(w) g_mutex_unlock(&((GtkGstBaseWidget*)(w))->lock)
G_BEGIN_DECLS
typedef struct _GtkGstBaseWidget GtkGstBaseWidget;
typedef struct _GtkGstBaseWidgetClass GtkGstBaseWidgetClass;
struct _GtkGstBaseWidget
{
union {
GtkDrawingArea drawing_area;
#if GTK_CHECK_VERSION(3, 15, 0)
GtkGLArea gl_area;
#endif
} parent;
/* properties */
gboolean force_aspect_ratio;
gint par_n, par_d;
gint video_par_n, video_par_d;
gboolean ignore_alpha;
gint display_width;
gint display_height;
gboolean negotiated;
GstBuffer *pending_buffer;
GstBuffer *buffer;
GstVideoInfo v_info;
/* resize */
gboolean pending_resize;
GstVideoInfo pending_v_info;
guint display_ratio_num;
guint display_ratio_den;
/*< private >*/
GMutex lock;
GWeakRef element;
/* Pending draw idles callback */
guint draw_id;
};
struct _GtkGstBaseWidgetClass
{
union {
GtkDrawingAreaClass drawing_area_class;
#if GTK_CHECK_VERSION(3, 15, 0)
GtkGLAreaClass gl_area_class;
#endif
} parent_class;
};
/* For implementer */
void gtk_gst_base_widget_class_init (GtkGstBaseWidgetClass * klass);
void gtk_gst_base_widget_init (GtkGstBaseWidget * widget);
void gtk_gst_base_widget_finalize (GObject * object);
/* API */
gboolean gtk_gst_base_widget_set_format (GtkGstBaseWidget * widget, GstVideoInfo * v_info);
void gtk_gst_base_widget_set_buffer (GtkGstBaseWidget * widget, GstBuffer * buffer);
void gtk_gst_base_widget_queue_draw (GtkGstBaseWidget * widget);
void gtk_gst_base_widget_set_element (GtkGstBaseWidget * widget, GstElement * element);
void gtk_gst_base_widget_display_size_to_stream_size (GtkGstBaseWidget * base_widget,
gdouble x, gdouble y,
gdouble * stream_x, gdouble * stream_y);
G_END_DECLS
#endif /* __GTK_GST_BASE_WIDGET_H__ */