gstreamer/gst-libs/gst/gl/egl/gstgldisplay_egl.c
Julien Isorce c2471aec81 gl: add EGLImage support
* picked from old libgstegl:
  - GstEGLImageMemory
  - GstEGLImageAllocator
  - last_buffer management from removed GstEGLImageBufferPool

* add-ons:
  - GstEGLImageMemory now old a reference on GstGLContext
    so that it can delete the EGLImage and its gltexture source
    while having the associated gl context being current.
  - add EGLImage support for GstVideoGLTextureUploadMeta which
    mainly call EGLImageTargetTexture2D
  - GstGLBufferPool now supports GstEGLImageAllocator
  - glimagesink / glfilters / etc.. now propose GstEGLImageAllocator
    to upstream

https://bugzilla.gnome.org/show_bug.cgi?id=703343
2017-12-09 19:31:35 +00:00

124 lines
3.3 KiB
C

/*
* GStreamer
* Copyright (C) 2014 Matthew Waters <ystreet00@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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gl/egl/gstgldisplay_egl.h>
#include <gst/gl/egl/gsteglimagememory.h>
GST_DEBUG_CATEGORY_STATIC (gst_gl_display_debug);
#define GST_CAT_DEFAULT gst_gl_display_debug
G_DEFINE_TYPE (GstGLDisplayEGL, gst_gl_display_egl, GST_TYPE_GL_DISPLAY);
static void gst_gl_display_egl_finalize (GObject * object);
static guintptr gst_gl_display_egl_get_handle (GstGLDisplay * display);
static void
gst_gl_display_egl_class_init (GstGLDisplayEGLClass * klass)
{
GST_GL_DISPLAY_CLASS (klass)->get_handle =
GST_DEBUG_FUNCPTR (gst_gl_display_egl_get_handle);
G_OBJECT_CLASS (klass)->finalize = gst_gl_display_egl_finalize;
}
static void
gst_gl_display_egl_init (GstGLDisplayEGL * display_egl)
{
GstGLDisplay *display = (GstGLDisplay *) display_egl;
display->type = GST_GL_DISPLAY_TYPE_EGL;
display_egl->foreign_display = FALSE;
gst_egl_image_memory_init ();
}
static void
gst_gl_display_egl_finalize (GObject * object)
{
GstGLDisplayEGL *display_egl = GST_GL_DISPLAY_EGL (object);
if (display_egl->display && !display_egl->foreign_display) {
eglTerminate (display_egl->display);
display_egl->display = NULL;
}
G_OBJECT_CLASS (gst_gl_display_egl_parent_class)->finalize (object);
}
/**
* gst_gl_display_egl_new:
* @name: (allow-none): a display name
*
* Create a new #GstGLDisplayEGL from the x11 display name. See XOpenDisplay()
* for details on what is a valid name.
*
* Returns: (transfer full): a new #GstGLDisplayEGL or %NULL
*/
GstGLDisplayEGL *
gst_gl_display_egl_new (void)
{
GstGLDisplayEGL *ret;
GST_DEBUG_CATEGORY_GET (gst_gl_display_debug, "gldisplay");
ret = g_object_new (GST_TYPE_GL_DISPLAY_EGL, NULL);
ret->display = eglGetDisplay ((EGLNativeDisplayType) EGL_DEFAULT_DISPLAY);
if (!ret->display) {
GST_ERROR ("Failed to open EGL display connection");
}
return ret;
}
/**
* gst_gl_display_egl_new_with_display:
* @display: an existing, x11 display
*
* Creates a new display connection from a X11 Display.
*
* Returns: (transfer full): a new #GstGLDisplayEGL
*/
GstGLDisplayEGL *
gst_gl_display_egl_new_with_egl_display (EGLDisplay display)
{
GstGLDisplayEGL *ret;
g_return_val_if_fail (display != NULL, NULL);
GST_DEBUG_CATEGORY_GET (gst_gl_display_debug, "gldisplay");
ret = g_object_new (GST_TYPE_GL_DISPLAY_EGL, NULL);
ret->display = display;
ret->foreign_display = TRUE;
return ret;
}
static guintptr
gst_gl_display_egl_get_handle (GstGLDisplay * display)
{
return (guintptr) GST_GL_DISPLAY_EGL (display)->display;
}