mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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364 lines
11 KiB
C
364 lines
11 KiB
C
/*
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* GStreamer
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* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
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* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>
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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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#define GLIB_DISABLE_DEPRECATION_WARNINGS
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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 "gstglwindow_x11_egl.h"
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const gchar *X11EGLErrorString ();
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#define GST_CAT_DEFAULT gst_gl_window_debug
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#define gst_gl_window_x11_egl_parent_class parent_class
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G_DEFINE_TYPE (GstGLWindowX11EGL, gst_gl_window_x11_egl,
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GST_GL_TYPE_WINDOW_X11);
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static guintptr gst_gl_window_x11_egl_get_gl_context (GstGLWindowX11 *
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window_x11);
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static void gst_gl_window_x11_egl_swap_buffers (GstGLWindowX11 * window_x11);
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static gboolean gst_gl_window_x11_egl_activate (GstGLWindowX11 * window_x11,
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gboolean activate);
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static gboolean gst_gl_window_x11_egl_create_context (GstGLWindowX11 *
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window_x11, GstGLAPI gl_api, guintptr external_gl_context, GError ** error);
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static void gst_gl_window_x11_egl_destroy_context (GstGLWindowX11 * window_x11);
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static gboolean gst_gl_window_x11_egl_choose_format (GstGLWindowX11 *
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window_x11, GError ** error);
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GstGLAPI gst_gl_window_x11_egl_get_gl_api (GstGLWindow * window);
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static gpointer gst_gl_window_x11_egl_get_proc_address (GstGLWindow * window,
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const gchar * name);
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static void
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gst_gl_window_x11_egl_class_init (GstGLWindowX11EGLClass * klass)
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{
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GstGLWindowClass *window_class = (GstGLWindowClass *) klass;
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GstGLWindowX11Class *window_x11_class = (GstGLWindowX11Class *) klass;
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window_x11_class->get_gl_context =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_get_gl_context);
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window_x11_class->activate =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_activate);
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window_x11_class->create_context =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_create_context);
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window_x11_class->destroy_context =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_destroy_context);
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window_x11_class->choose_format =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_choose_format);
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window_x11_class->swap_buffers =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_swap_buffers);
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window_class->get_gl_api =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_get_gl_api);
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window_class->get_proc_address =
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GST_DEBUG_FUNCPTR (gst_gl_window_x11_egl_get_proc_address);
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}
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static void
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gst_gl_window_x11_egl_init (GstGLWindowX11EGL * window)
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{
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}
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/* Must be called in the gl thread */
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GstGLWindowX11EGL *
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gst_gl_window_x11_egl_new (void)
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{
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GstGLWindowX11EGL *window = g_object_new (GST_GL_TYPE_WINDOW_X11_EGL, NULL);
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return window;
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}
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static gboolean
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gst_gl_window_x11_egl_choose_format (GstGLWindowX11 * window_x11,
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GError ** error)
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{
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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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if (ret == 0) {
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g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_WRONG_CONFIG,
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"Failed to match XVisualInfo");
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return FALSE;
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}
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return TRUE;
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}
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static gboolean
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_gst_gl_window_x11_egl_choose_config (GstGLWindowX11EGL * window_egl,
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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 (window_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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config_attrib[i++] = EGL_DEPTH_SIZE;
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config_attrib[i++] = 16;
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config_attrib[i++] = EGL_NONE;
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if (eglChooseConfig (window_egl->egl_display, config_attrib,
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&window_egl->egl_config, 1, &numConfigs))
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GST_INFO ("config set: %ld, %ld", (gulong) window_egl->egl_config,
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(gulong) numConfigs);
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else {
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g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_WRONG_CONFIG,
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"Failed to set window configuration: %s", X11EGLErrorString ());
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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_window_x11_egl_create_context (GstGLWindowX11 * window_x11,
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GstGLAPI gl_api, guintptr external_gl_context, GError ** error)
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{
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GstGLWindowX11EGL *window_egl;
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gint i = 0;
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EGLint context_attrib[3];
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EGLint majorVersion;
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EGLint minorVersion;
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if ((gl_api & GST_GL_API_OPENGL) == GST_GL_API_NONE &&
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(gl_api & GST_GL_API_GLES2) == GST_GL_API_NONE) {
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g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_WRONG_API,
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"xEGL supports opengl or gles2");
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goto failure;
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}
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window_egl = GST_GL_WINDOW_X11_EGL (window_x11);
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window_egl->egl_display =
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eglGetDisplay ((EGLNativeDisplayType) window_x11->device);
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if (eglInitialize (window_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_WINDOW_ERROR,
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GST_GL_WINDOW_ERROR_RESOURCE_UNAVAILABLE,
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"Failed to initialize egl: %s", X11EGLErrorString ());
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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_WINDOW_ERROR, GST_GL_WINDOW_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_WINDOW_ERROR,
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GST_GL_WINDOW_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_WINDOW_ERROR, GST_GL_WINDOW_ERROR_FAILED,
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"Failed to bind OpenGL|ES API: %s", X11EGLErrorString ());
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goto failure;
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}
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window_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_WINDOW_ERROR, GST_GL_WINDOW_ERROR_FAILED,
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"Failed to bind OpenGL|ES API: %s", X11EGLErrorString ());
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goto failure;
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}
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window_egl->gl_api = GST_GL_API_GLES2;
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}
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if (!_gst_gl_window_x11_egl_choose_config (window_egl, 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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window_egl->egl_surface =
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eglCreateWindowSurface (window_egl->egl_display, window_egl->egl_config,
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(EGLNativeWindowType) window_x11->internal_win_id, NULL);
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if (window_egl->egl_surface != EGL_NO_SURFACE)
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GST_INFO ("surface created");
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else {
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g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_FAILED,
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"Failed to create window surface: %s", X11EGLErrorString ());
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goto failure;
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}
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GST_DEBUG ("about to create gl context\n");
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if (window_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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context_attrib[i++] = EGL_NONE;
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window_egl->egl_context =
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eglCreateContext (window_egl->egl_display, window_egl->egl_config,
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(EGLContext) external_gl_context, context_attrib);
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if (window_egl->egl_context != EGL_NO_CONTEXT)
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GST_INFO ("gl context created: %ld", (gulong) window_egl->egl_context);
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else {
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g_set_error (error, GST_GL_WINDOW_ERROR, GST_GL_WINDOW_ERROR_CREATE_CONTEXT,
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"Failed to create a OpenGL context: %s", X11EGLErrorString ());
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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 void
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gst_gl_window_x11_egl_destroy_context (GstGLWindowX11 * window_x11)
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{
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GstGLWindowX11EGL *window_egl;
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window_egl = GST_GL_WINDOW_X11_EGL (window_x11);
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if (window_egl->egl_context)
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eglDestroyContext (window_x11->device, window_egl->egl_context);
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if (window_x11->device)
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eglTerminate (window_x11->device);
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}
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static gboolean
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gst_gl_window_x11_egl_activate (GstGLWindowX11 * window_x11, gboolean activate)
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{
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gboolean result;
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GstGLWindowX11EGL *window_egl;
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window_egl = GST_GL_WINDOW_X11_EGL (window_x11);
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if (activate)
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result = eglMakeCurrent (window_egl->egl_display, window_egl->egl_surface,
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window_egl->egl_surface, window_egl->egl_context);
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else
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result = eglMakeCurrent (window_egl->egl_display, EGL_NO_SURFACE,
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EGL_NO_SURFACE, EGL_NO_CONTEXT);
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return result;
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}
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static guintptr
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gst_gl_window_x11_egl_get_gl_context (GstGLWindowX11 * window_x11)
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{
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return (guintptr) GST_GL_WINDOW_X11_EGL (window_x11)->egl_context;
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}
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static void
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gst_gl_window_x11_egl_swap_buffers (GstGLWindowX11 * window_x11)
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{
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GstGLWindowX11EGL *window_egl = GST_GL_WINDOW_X11_EGL (window_x11);
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eglSwapBuffers (window_egl->egl_display, window_egl->egl_surface);
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}
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GstGLAPI
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gst_gl_window_x11_egl_get_gl_api (GstGLWindow * window)
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{
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GstGLWindowX11EGL *window_egl = GST_GL_WINDOW_X11_EGL (window);
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return window_egl->gl_api ? window_egl->
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gl_api : GST_GL_API_GLES2 | GST_GL_API_OPENGL;
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}
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static gpointer
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gst_gl_window_x11_egl_get_proc_address (GstGLWindow * window,
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const gchar * name)
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{
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gpointer result;
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if (!(result = eglGetProcAddress (name))) {
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result = gst_gl_window_default_get_proc_address (window, name);
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}
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return result;
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}
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const gchar *
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X11EGLErrorString ()
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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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