mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-24 18:51:11 +00:00
5b8d7a443e
Allows callers to properly reference count the buffers used for rendering. Fixes a redraw race in glimagesink where the previous buffer (the one used for redraw operations) is freed as soon as the next buffer is uploaded. 1. glimagesink uploads in _prepare() to texture n 1.1 glupload holds buffer n 2. glimagesink _render()s texture n 3. glimagesink uploads texture n+1 3.1 glupload free previous buffer which deletes texture n 3.2 glupload holds buffer n+1 4. glwindow resize/expose 5. glimagesink redraws with texture n The race is that the buffer n (the one used for redrawing) is freed as soon as the buffer n+1 arrives. There could be any amount of time and number of redraws between this event and when buffer n+1 is actually rendered and thus replaces buffer n as the redraw source. https://bugzilla.gnome.org/show_bug.cgi?id=736740
102 lines
2.6 KiB
C
102 lines
2.6 KiB
C
/*
|
|
* GStreamer
|
|
* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
|
|
* Copyright (C) 2005,2006,2007 David A. Schleef <ds@schleef.org>
|
|
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.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 _GLIMAGESINK_H_
|
|
#define _GLIMAGESINK_H_
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/video/gstvideosink.h>
|
|
#include <gst/video/video.h>
|
|
|
|
#include <gst/gl/gl.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
GST_DEBUG_CATEGORY_EXTERN (gst_debug_glimage_sink);
|
|
|
|
#define GST_TYPE_GLIMAGE_SINK \
|
|
(gst_glimage_sink_get_type())
|
|
#define GST_GLIMAGE_SINK(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GLIMAGE_SINK,GstGLImageSink))
|
|
#define GST_GLIMAGE_SINK_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_GLIMAGE_SINK,GstGLImageSinkClass))
|
|
#define GST_IS_GLIMAGE_SINK(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GLIMAGE_SINK))
|
|
#define GST_IS_GLIMAGE_SINK_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_GLIMAGE_SINK))
|
|
|
|
typedef struct _GstGLImageSink GstGLImageSink;
|
|
typedef struct _GstGLImageSinkClass GstGLImageSinkClass;
|
|
|
|
struct _GstGLImageSink
|
|
{
|
|
GstVideoSink video_sink;
|
|
|
|
//properties
|
|
gchar *display_name;
|
|
|
|
guintptr window_id;
|
|
guintptr new_window_id;
|
|
gulong mouse_sig_id;
|
|
gulong key_sig_id;
|
|
|
|
//caps
|
|
GstVideoInfo info;
|
|
|
|
GstGLDisplay *display;
|
|
GstGLContext *context;
|
|
GstGLContext *other_context;
|
|
|
|
GstGLUpload *upload;
|
|
guint next_tex;
|
|
GstBuffer *next_buffer;
|
|
|
|
volatile gint to_quit;
|
|
gboolean keep_aspect_ratio;
|
|
gint par_n, par_d;
|
|
|
|
GstBufferPool *pool;
|
|
|
|
/* avoid replacing the stored_buffer while drawing */
|
|
GMutex drawing_lock;
|
|
GstBuffer *stored_buffer;
|
|
GLuint redisplay_texture;
|
|
|
|
#if GST_GL_HAVE_GLES2
|
|
GstGLShader *redisplay_shader;
|
|
GLint redisplay_attr_position_loc;
|
|
GLint redisplay_attr_texture_loc;
|
|
#endif
|
|
|
|
};
|
|
|
|
struct _GstGLImageSinkClass
|
|
{
|
|
GstVideoSinkClass video_sink_class;
|
|
};
|
|
|
|
GType gst_glimage_sink_get_type(void);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif
|
|
|