mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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658 lines
20 KiB
C
658 lines
20 KiB
C
/*
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* GStreamer
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* Copyright (C) 2013 Sebastian Dröge <slomo@circular-chaos.org>
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gmodule.h>
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/* FIXME: Sharing contexts requires the EGLDisplay to be the same
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* may need to box it.
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*/
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#include "gstglcontext_egl.h"
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#if GST_GL_HAVE_WINDOW_X11
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#include "../x11/gstglwindow_x11.h"
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#include <gst/gl/x11/gstgldisplay_x11.h>
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#endif
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#if GST_GL_HAVE_WINDOW_WIN32
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#include "../win32/gstglwindow_win32.h"
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#endif
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#if GST_GL_HAVE_WINDOW_DISPMANX
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#include "../dispmanx/gstglwindow_dispmanx_egl.h"
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#endif
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#define GST_CAT_DEFAULT gst_gl_context_debug
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static gboolean gst_gl_context_egl_create_context (GstGLContext * context,
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GstGLAPI gl_api, GstGLContext * other_context, GError ** error);
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static void gst_gl_context_egl_destroy_context (GstGLContext * context);
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static gboolean gst_gl_context_egl_choose_format (GstGLContext * context,
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GError ** error);
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static gboolean gst_gl_context_egl_activate (GstGLContext * context,
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gboolean activate);
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static void gst_gl_context_egl_swap_buffers (GstGLContext * context);
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static guintptr gst_gl_context_egl_get_gl_context (GstGLContext * context);
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static GstGLAPI gst_gl_context_egl_get_gl_api (GstGLContext * context);
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static GstGLPlatform gst_gl_context_egl_get_gl_platform (GstGLContext *
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context);
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static gboolean gst_gl_context_egl_check_feature (GstGLContext * context,
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const gchar * feature);
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G_DEFINE_TYPE (GstGLContextEGL, gst_gl_context_egl, GST_GL_TYPE_CONTEXT);
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static void
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gst_gl_context_egl_class_init (GstGLContextEGLClass * klass)
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{
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GstGLContextClass *context_class = (GstGLContextClass *) klass;
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context_class->get_gl_context =
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GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_gl_context);
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context_class->activate = GST_DEBUG_FUNCPTR (gst_gl_context_egl_activate);
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context_class->create_context =
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GST_DEBUG_FUNCPTR (gst_gl_context_egl_create_context);
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context_class->destroy_context =
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GST_DEBUG_FUNCPTR (gst_gl_context_egl_destroy_context);
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context_class->choose_format =
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GST_DEBUG_FUNCPTR (gst_gl_context_egl_choose_format);
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context_class->swap_buffers =
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GST_DEBUG_FUNCPTR (gst_gl_context_egl_swap_buffers);
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context_class->get_gl_api = GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_gl_api);
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context_class->get_gl_platform =
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GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_gl_platform);
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context_class->get_proc_address =
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GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_proc_address);
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context_class->check_feature =
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GST_DEBUG_FUNCPTR (gst_gl_context_egl_check_feature);
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context_class->get_current_context =
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GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_current_context);
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}
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static void
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gst_gl_context_egl_init (GstGLContextEGL * context)
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{
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}
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/* Must be called in the gl thread */
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GstGLContextEGL *
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gst_gl_context_egl_new (void)
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{
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GstGLContextEGL *window = g_object_new (GST_GL_TYPE_CONTEXT_EGL, NULL);
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return window;
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}
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static const gchar *
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gst_gl_context_egl_get_error_string (void)
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{
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EGLint nErr = eglGetError ();
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switch (nErr) {
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case EGL_SUCCESS:
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return "EGL_SUCCESS";
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case EGL_BAD_DISPLAY:
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return "EGL_BAD_DISPLAY";
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case EGL_NOT_INITIALIZED:
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return "EGL_NOT_INITIALIZED";
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case EGL_BAD_ACCESS:
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return "EGL_BAD_ACCESS";
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case EGL_BAD_ALLOC:
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return "EGL_BAD_ALLOC";
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case EGL_BAD_ATTRIBUTE:
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return "EGL_BAD_ATTRIBUTE";
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case EGL_BAD_CONFIG:
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return "EGL_BAD_CONFIG";
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case EGL_BAD_CONTEXT:
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return "EGL_BAD_CONTEXT";
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case EGL_BAD_CURRENT_SURFACE:
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return "EGL_BAD_CURRENT_SURFACE";
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case EGL_BAD_MATCH:
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return "EGL_BAD_MATCH";
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case EGL_BAD_NATIVE_PIXMAP:
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return "EGL_BAD_NATIVE_PIXMAP";
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case EGL_BAD_NATIVE_WINDOW:
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return "EGL_BAD_NATIVE_WINDOW";
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case EGL_BAD_PARAMETER:
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return "EGL_BAD_PARAMETER";
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case EGL_BAD_SURFACE:
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return "EGL_BAD_SURFACE";
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default:
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return "unknown";
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}
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}
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static gboolean
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gst_gl_context_egl_choose_format (GstGLContext * context, GError ** error)
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{
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#if GST_GL_HAVE_WINDOW_X11
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if (GST_GL_IS_WINDOW_X11 (context->window)) {
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GstGLWindow *window = gst_gl_context_get_window (context);
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GstGLWindowX11 *window_x11 = GST_GL_WINDOW_X11 (window);
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gint ret;
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window_x11->visual_info = g_new0 (XVisualInfo, 1);
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ret = XMatchVisualInfo (window_x11->device, window_x11->screen_num,
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window_x11->depth, TrueColor, window_x11->visual_info);
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gst_object_unref (window);
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if (ret == 0) {
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g_set_error (error, GST_GL_CONTEXT_ERROR,
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GST_GL_CONTEXT_ERROR_WRONG_CONFIG, "Failed to match XVisualInfo");
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return FALSE;
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}
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}
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#endif
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return TRUE;
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}
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static gboolean
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gst_gl_context_egl_choose_config (GstGLContextEGL * egl,
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GstGLContext * other_context, GError ** error)
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{
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EGLint numConfigs;
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gint i = 0;
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EGLint config_attrib[20];
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config_attrib[i++] = EGL_SURFACE_TYPE;
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config_attrib[i++] = EGL_WINDOW_BIT;
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config_attrib[i++] = EGL_RENDERABLE_TYPE;
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if (egl->gl_api & GST_GL_API_GLES2)
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config_attrib[i++] = EGL_OPENGL_ES2_BIT;
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else
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config_attrib[i++] = EGL_OPENGL_BIT;
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#if defined(USE_EGL_RPI) && GST_GL_HAVE_WINDOW_WAYLAND
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/* The configurations with a=0 seems to be buggy whereas
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* it works when using dispmanx directly */
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config_attrib[i++] = EGL_ALPHA_SIZE;
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config_attrib[i++] = 1;
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#endif
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config_attrib[i++] = EGL_DEPTH_SIZE;
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config_attrib[i++] = 16;
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config_attrib[i++] = EGL_RED_SIZE;
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config_attrib[i++] = 1;
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config_attrib[i++] = EGL_GREEN_SIZE;
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config_attrib[i++] = 1;
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config_attrib[i++] = EGL_BLUE_SIZE;
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config_attrib[i++] = 1;
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config_attrib[i++] = EGL_NONE;
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if (eglChooseConfig (egl->egl_display, config_attrib,
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&egl->egl_config, 1, &numConfigs)) {
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GST_INFO ("config set: %" G_GUINTPTR_FORMAT ", %u",
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(guintptr) egl->egl_config, (unsigned int) numConfigs);
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} else {
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g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
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"Failed to set window configuration: %s",
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gst_gl_context_egl_get_error_string ());
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goto failure;
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}
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return TRUE;
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failure:
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return FALSE;
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}
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static gboolean
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gst_gl_context_egl_create_context (GstGLContext * context,
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GstGLAPI gl_api, GstGLContext * other_context, GError ** error)
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{
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GstGLContextEGL *egl;
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GstGLWindow *window = NULL;
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EGLNativeWindowType window_handle = (EGLNativeWindowType) 0;
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gint i = 0;
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EGLint context_attrib[5];
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EGLint majorVersion;
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EGLint minorVersion;
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const gchar *egl_exts;
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gboolean need_surface = TRUE;
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guintptr external_gl_context = 0;
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GstGLDisplay *display;
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egl = GST_GL_CONTEXT_EGL (context);
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window = gst_gl_context_get_window (context);
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GST_DEBUG_OBJECT (context, "Creating EGL context");
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if (other_context) {
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if (gst_gl_context_get_gl_platform (other_context) != GST_GL_PLATFORM_EGL) {
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g_set_error (error, GST_GL_CONTEXT_ERROR,
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GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
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"Cannot share context with non-EGL context");
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goto failure;
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}
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external_gl_context = gst_gl_context_get_gl_context (other_context);
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}
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if ((gl_api & (GST_GL_API_OPENGL | GST_GL_API_GLES2)) == GST_GL_API_NONE) {
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g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
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"EGL supports opengl or gles2");
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goto failure;
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}
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display = gst_gl_context_get_display (context);
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if (display->type == GST_GL_DISPLAY_TYPE_EGL) {
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egl->egl_display = (EGLDisplay) gst_gl_display_get_handle (display);
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} else {
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guintptr native_display = gst_gl_display_get_handle (display);
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if (!native_display) {
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GstGLWindow *window = NULL;
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GST_WARNING ("Failed to get a global display handle, falling back to "
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"per-window display handles. Context sharing may not work");
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if (other_context)
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window = gst_gl_context_get_window (other_context);
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if (!window)
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window = gst_gl_context_get_window (context);
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if (window) {
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native_display = gst_gl_window_get_display (window);
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gst_object_unref (window);
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}
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}
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egl->egl_display = eglGetDisplay ((EGLNativeDisplayType) native_display);
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}
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gst_object_unref (display);
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if (eglInitialize (egl->egl_display, &majorVersion, &minorVersion)) {
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GST_INFO ("egl initialized, version: %d.%d", majorVersion, minorVersion);
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} else {
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g_set_error (error, GST_GL_CONTEXT_ERROR,
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GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE,
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"Failed to initialize egl: %s", gst_gl_context_egl_get_error_string ());
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goto failure;
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}
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if (gl_api & GST_GL_API_OPENGL) {
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/* egl + opengl only available with EGL 1.4+ */
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if (majorVersion == 1 && minorVersion <= 3) {
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if ((gl_api & ~GST_GL_API_OPENGL) == GST_GL_API_NONE) {
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g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_OLD_LIBS,
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"EGL version (%i.%i) too old for OpenGL support, (needed at least 1.4)",
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majorVersion, minorVersion);
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goto failure;
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} else {
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GST_WARNING
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("EGL version (%i.%i) too old for OpenGL support, (needed at least 1.4)",
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majorVersion, minorVersion);
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if (gl_api & GST_GL_API_GLES2) {
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goto try_gles2;
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} else {
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g_set_error (error, GST_GL_CONTEXT_ERROR,
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GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
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"Failed to choose a suitable OpenGL API");
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goto failure;
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}
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}
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}
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if (!eglBindAPI (EGL_OPENGL_API)) {
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g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
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"Failed to bind OpenGL API: %s",
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gst_gl_context_egl_get_error_string ());
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goto failure;
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}
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GST_INFO ("Using OpenGL");
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egl->gl_api = GST_GL_API_OPENGL;
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} else if (gl_api & GST_GL_API_GLES2) {
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try_gles2:
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if (!eglBindAPI (EGL_OPENGL_ES_API)) {
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g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
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"Failed to bind OpenGL|ES API: %s",
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gst_gl_context_egl_get_error_string ());
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goto failure;
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}
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GST_INFO ("Using OpenGL|ES 2.0");
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egl->gl_api = GST_GL_API_GLES2;
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}
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if (!gst_gl_context_egl_choose_config (egl, other_context, error)) {
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g_assert (error == NULL || *error != NULL);
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goto failure;
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}
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egl_exts = eglQueryString (egl->egl_display, EGL_EXTENSIONS);
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GST_DEBUG ("about to create gl context");
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if (egl->gl_api & GST_GL_API_GLES2) {
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context_attrib[i++] = EGL_CONTEXT_CLIENT_VERSION;
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context_attrib[i++] = 2;
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}
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#if !defined(GST_DISABLE_GST_DEBUG) && defined(EGL_KHR_create_context)
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if (gst_gl_check_extension ("EGL_KHR_create_context", egl_exts)) {
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context_attrib[i++] = EGL_CONTEXT_FLAGS_KHR;
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context_attrib[i++] = EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
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}
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#endif
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context_attrib[i++] = EGL_NONE;
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egl->egl_context =
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eglCreateContext (egl->egl_display, egl->egl_config,
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(EGLContext) external_gl_context, context_attrib);
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#ifdef EGL_KHR_create_context
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if (egl->egl_context == EGL_NO_CONTEXT && egl->gl_api & GST_GL_API_GLES2
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&& eglGetError () != EGL_SUCCESS) {
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/* try without EGL_CONTEXT_FLAGS flags as it was added to
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* EGL_KHR_create_context for gles contexts */
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int i;
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for (i = 0; i < G_N_ELEMENTS (context_attrib); i++) {
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if (context_attrib[i] == EGL_CONTEXT_FLAGS_KHR ||
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context_attrib[i] == EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR)
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context_attrib[i] = EGL_NONE;
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}
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egl->egl_context =
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eglCreateContext (egl->egl_display, egl->egl_config,
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(EGLContext) external_gl_context, context_attrib);
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}
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#endif
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if (egl->egl_context != EGL_NO_CONTEXT) {
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GST_INFO ("gl context created: %" G_GUINTPTR_FORMAT,
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(guintptr) egl->egl_context);
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} else {
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g_set_error (error, GST_GL_CONTEXT_ERROR,
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GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
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"Failed to create a OpenGL context: %s",
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gst_gl_context_egl_get_error_string ());
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goto failure;
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}
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if (other_context == NULL) {
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/* FIXME do we want a window vfunc ? */
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#if GST_GL_HAVE_WINDOW_X11
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if (GST_GL_IS_WINDOW_X11 (context->window)) {
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gst_gl_window_x11_create_window ((GstGLWindowX11 *) context->window);
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}
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#endif
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#if GST_GL_HAVE_WINDOW_WIN32
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if (GST_GL_IS_WINDOW_WIN32 (context->window)) {
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gst_gl_window_win32_create_window ((GstGLWindowWin32 *) context->window);
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}
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#endif
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#if GST_GL_HAVE_WINDOW_DISPMANX
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if (GST_GL_IS_WINDOW_DISPMANX_EGL (context->window)) {
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gst_gl_window_dispmanx_egl_create_window ((GstGLWindowDispmanxEGL *)
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context->window);
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}
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#endif
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}
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if (window)
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window_handle =
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(EGLNativeWindowType) gst_gl_window_get_window_handle (window);
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if (window_handle) {
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GST_DEBUG ("Creating EGLSurface from window_handle %p",
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(void *) window_handle);
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egl->egl_surface =
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eglCreateWindowSurface (egl->egl_display, egl->egl_config,
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window_handle, NULL);
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/* Store window handle for later comparision */
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egl->window_handle = window_handle;
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} else if (!gst_gl_check_extension ("EGL_KHR_surfaceless_context", egl_exts)) {
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EGLint surface_attrib[7];
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gint j = 0;
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GST_DEBUG ("Surfaceless context, creating PBufferSurface");
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/* FIXME: Width/height doesn't seem to matter but we can't leave them
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* at 0, otherwise X11 complains about BadValue */
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surface_attrib[j++] = EGL_WIDTH;
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surface_attrib[j++] = 1;
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surface_attrib[j++] = EGL_HEIGHT;
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surface_attrib[j++] = 1;
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surface_attrib[j++] = EGL_LARGEST_PBUFFER;
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surface_attrib[j++] = EGL_TRUE;
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surface_attrib[j++] = EGL_NONE;
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egl->egl_surface =
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eglCreatePbufferSurface (egl->egl_display, egl->egl_config,
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surface_attrib);
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} else {
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GST_DEBUG ("No surface/handle !");
|
|
egl->egl_surface = EGL_NO_SURFACE;
|
|
need_surface = FALSE;
|
|
}
|
|
|
|
if (need_surface) {
|
|
if (egl->egl_surface != EGL_NO_SURFACE) {
|
|
GST_INFO ("surface created");
|
|
} else {
|
|
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
|
|
"Failed to create window surface: %s",
|
|
gst_gl_context_egl_get_error_string ());
|
|
goto failure;
|
|
}
|
|
}
|
|
|
|
/* EGLImage functions */
|
|
if (GST_GL_CHECK_GL_VERSION (majorVersion, minorVersion, 1, 5)) {
|
|
egl->eglCreateImage = gst_gl_context_get_proc_address (context,
|
|
"eglCreateImage");
|
|
egl->eglDestroyImage = gst_gl_context_get_proc_address (context,
|
|
"eglDestroyImage");
|
|
} else if (gst_gl_check_extension ("EGL_KHR_image_base", egl_exts)) {
|
|
egl->eglCreateImage = gst_gl_context_get_proc_address (context,
|
|
"eglCreateImageKHR");
|
|
egl->eglDestroyImage = gst_gl_context_get_proc_address (context,
|
|
"eglDestroyImageKHR");
|
|
}
|
|
if (egl->eglCreateImage == NULL || egl->eglDestroyImage == NULL) {
|
|
egl->eglCreateImage = NULL;
|
|
egl->eglDestroyImage = NULL;
|
|
}
|
|
|
|
if (window)
|
|
gst_object_unref (window);
|
|
|
|
return TRUE;
|
|
|
|
failure:
|
|
if (window)
|
|
gst_object_unref (window);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gst_gl_context_egl_destroy_context (GstGLContext * context)
|
|
{
|
|
GstGLContextEGL *egl;
|
|
|
|
egl = GST_GL_CONTEXT_EGL (context);
|
|
|
|
gst_gl_context_egl_activate (context, FALSE);
|
|
|
|
if (egl->egl_surface) {
|
|
eglDestroySurface (egl->egl_display, egl->egl_surface);
|
|
egl->egl_surface = EGL_NO_SURFACE;
|
|
}
|
|
|
|
if (egl->egl_context) {
|
|
eglDestroyContext (egl->egl_display, egl->egl_context);
|
|
egl->egl_context = NULL;
|
|
}
|
|
egl->window_handle = 0;
|
|
|
|
eglReleaseThread ();
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_context_egl_activate (GstGLContext * context, gboolean activate)
|
|
{
|
|
GstGLContextEGL *egl;
|
|
gboolean result;
|
|
|
|
egl = GST_GL_CONTEXT_EGL (context);
|
|
|
|
if (activate) {
|
|
GstGLWindow *window = gst_gl_context_get_window (context);
|
|
EGLNativeWindowType handle = 0;
|
|
/* Check if the backing handle changed */
|
|
if (window) {
|
|
handle = (EGLNativeWindowType) gst_gl_window_get_window_handle (window);
|
|
gst_object_unref (window);
|
|
}
|
|
if (handle && handle != egl->window_handle) {
|
|
GST_DEBUG_OBJECT (context,
|
|
"Handle changed (have:%p, now:%p), switching surface",
|
|
(void *) egl->window_handle, (void *) handle);
|
|
if (egl->egl_surface) {
|
|
result = eglDestroySurface (egl->egl_display, egl->egl_surface);
|
|
egl->egl_surface = EGL_NO_SURFACE;
|
|
if (!result) {
|
|
GST_ERROR_OBJECT (context, "Failed to destroy old window surface: %s",
|
|
gst_gl_context_egl_get_error_string ());
|
|
goto done;
|
|
}
|
|
}
|
|
egl->egl_surface =
|
|
eglCreateWindowSurface (egl->egl_display, egl->egl_config, handle,
|
|
NULL);
|
|
egl->window_handle = handle;
|
|
|
|
if (egl->egl_surface == EGL_NO_SURFACE) {
|
|
GST_ERROR_OBJECT (context, "Failed to create window surface: %s",
|
|
gst_gl_context_egl_get_error_string ());
|
|
result = FALSE;
|
|
goto done;
|
|
}
|
|
}
|
|
result = eglMakeCurrent (egl->egl_display, egl->egl_surface,
|
|
egl->egl_surface, egl->egl_context);
|
|
} else
|
|
result = eglMakeCurrent (egl->egl_display, EGL_NO_SURFACE,
|
|
EGL_NO_SURFACE, EGL_NO_CONTEXT);
|
|
|
|
if (!result) {
|
|
GST_ERROR_OBJECT (context,
|
|
"Failed to bind context to the current rendering thread: %s",
|
|
gst_gl_context_egl_get_error_string ());
|
|
}
|
|
|
|
done:
|
|
return result;
|
|
}
|
|
|
|
static guintptr
|
|
gst_gl_context_egl_get_gl_context (GstGLContext * context)
|
|
{
|
|
return (guintptr) GST_GL_CONTEXT_EGL (context)->egl_context;
|
|
}
|
|
|
|
static void
|
|
gst_gl_context_egl_swap_buffers (GstGLContext * context)
|
|
{
|
|
GstGLContextEGL *egl;
|
|
|
|
egl = GST_GL_CONTEXT_EGL (context);
|
|
|
|
eglSwapBuffers (egl->egl_display, egl->egl_surface);
|
|
}
|
|
|
|
static GstGLAPI
|
|
gst_gl_context_egl_get_gl_api (GstGLContext * context)
|
|
{
|
|
return GST_GL_CONTEXT_EGL (context)->gl_api;
|
|
}
|
|
|
|
static GstGLPlatform
|
|
gst_gl_context_egl_get_gl_platform (GstGLContext * context)
|
|
{
|
|
return GST_GL_PLATFORM_EGL;
|
|
}
|
|
|
|
static GModule *module_egl;
|
|
|
|
static gpointer
|
|
load_egl_module (gpointer user_data)
|
|
{
|
|
#ifdef GST_GL_LIBEGL_MODULE_NAME
|
|
module_egl = g_module_open (GST_GL_LIBEGL_MODULE_NAME, G_MODULE_BIND_LAZY);
|
|
#else
|
|
/* On Linux the .so is only in -dev packages, try with a real soname
|
|
* Proper compilers will optimize away the strcmp */
|
|
if (strcmp (G_MODULE_SUFFIX, "so") == 0)
|
|
module_egl = g_module_open ("libEGL.so.1", G_MODULE_BIND_LAZY);
|
|
|
|
/* This automatically handles the suffix and even .la files */
|
|
if (!module_egl)
|
|
module_egl = g_module_open ("libEGL", G_MODULE_BIND_LAZY);
|
|
#endif
|
|
|
|
return NULL;
|
|
}
|
|
|
|
gpointer
|
|
gst_gl_context_egl_get_proc_address (GstGLContext * context, const gchar * name)
|
|
{
|
|
gpointer result = NULL;
|
|
static GOnce g_once = G_ONCE_INIT;
|
|
GstGLAPI gl_api = gst_gl_context_get_gl_api (context);
|
|
|
|
result = gst_gl_context_default_get_proc_address (gl_api, name);
|
|
|
|
g_once (&g_once, load_egl_module, NULL);
|
|
|
|
if (!result && module_egl) {
|
|
g_module_symbol (module_egl, name, &result);
|
|
}
|
|
|
|
/* FIXME: On Android this returns wrong addresses for non-EGL functions */
|
|
#if GST_GL_HAVE_WINDOW_ANDROID
|
|
if (!result && g_str_has_prefix (name, "egl")) {
|
|
#else
|
|
if (!result) {
|
|
result = eglGetProcAddress (name);
|
|
#endif
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_context_egl_check_feature (GstGLContext * context, const gchar * feature)
|
|
{
|
|
GstGLContextEGL *context_egl = GST_GL_CONTEXT_EGL (context);
|
|
|
|
if (g_strcmp0 (feature, "EGL_KHR_image_base") == 0) {
|
|
return context_egl->eglCreateImage != NULL &&
|
|
context_egl->eglDestroyImage != NULL;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
guintptr
|
|
gst_gl_context_egl_get_current_context (void)
|
|
{
|
|
return (guintptr) eglGetCurrentContext ();
|
|
}
|