gstreamer/gst-libs/gst/gl/cocoa/gstglcaopengllayer.h
Matthew Waters 3addb6bbf4 glwindow: add API to request a resize event on the next draw
- glimagesink needs to be able to resize the viewport on aspect ratio
  changes resulting from either caps changes or 3d output mode changes.
- Performing a glViewport outside the GstGLWindow::resize callback
  will not have the winsys' stack of viewports required to correctly
  place the output frame.

Provide a function to request a resize on the next draw event from the
winsys.

Also track size changes inside the base GstGLWindow class rather
than in each subclass.

https://bugzilla.gnome.org/show_bug.cgi?id=755111
2015-09-17 20:26:23 +10:00

61 lines
1.7 KiB
Objective-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 __GST_GL_CA_OPENGL_LAYER__
#define __GST_GL_CA_OPENGL_LAYER__
#include <gst/gst.h>
#include <gst/gl/gl.h>
#include <Cocoa/Cocoa.h>
#include <gst/gl/cocoa/gstglcontext_cocoa.h>
G_BEGIN_DECLS
@interface GstGLCAOpenGLLayer : CAOpenGLLayer {
@public
GstGLContextCocoa *gst_gl_context;
CGLContextObj gl_context;
@private
GstGLContext *draw_context;
CGRect last_bounds;
gint expected_dims[4];
GstGLWindowCB draw_cb;
gpointer draw_data;
GDestroyNotify draw_notify;
GstGLWindowResizeCB resize_cb;
gpointer resize_data;
GDestroyNotify resize_notify;
gint can_draw;
gboolean queue_resize;
}
- (void) setDrawCallback:(GstGLWindowCB)cb data:(gpointer)a notify:(GDestroyNotify)notify;
- (void) setResizeCallback:(GstGLWindowResizeCB)cb data:(gpointer)a notify:(GDestroyNotify)notify;
- (void) queueResize;
- (id) initWithGstGLContext: (GstGLContextCocoa *)context;
@end
G_END_DECLS
#endif /* __GST_GL_CA_OPENGL_LAYER__ */