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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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471 lines
14 KiB
C
471 lines
14 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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/* 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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#include <gst/gl/gl.h>
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#if GST_GL_HAVE_WINDOW_X11
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#include "../x11/gstglwindow_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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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 gpointer gst_gl_context_egl_get_proc_address (GstGLContext * context,
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const gchar * name);
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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_proc_address =
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GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_proc_address);
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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) && defined(GST_GL_HAVE_WINDOW_WAYLAND)
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/* The configurations r=5 g=6 b=5 seems to be buggy whereas
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* it works when using dispmanx directly */
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config_attrib[i++] = EGL_BUFFER_SIZE;
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config_attrib[i++] = 24;
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/* same with a=0 */
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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_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;
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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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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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egl = GST_GL_CONTEXT_EGL (context);
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window = gst_gl_context_get_window (context);
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if (other_context) {
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if (!GST_GL_IS_CONTEXT_EGL (other_context)) {
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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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if (other_context) {
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GstGLContextEGL *other_egl = (GstGLContextEGL *) other_context;
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egl->egl_display = other_egl->egl_display;
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} else {
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egl->egl_display = eglGetDisplay ((EGLNativeDisplayType)
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gst_gl_window_get_display (window));
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}
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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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GST_DEBUG ("about to create gl context\n");
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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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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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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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egl_exts = eglQueryString (egl->egl_display, EGL_EXTENSIONS);
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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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}
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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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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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} 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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/* 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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egl->egl_surface = EGL_NO_SURFACE;
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need_surface = FALSE;
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}
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if (need_surface) {
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if (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_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
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"Failed to create window surface: %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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}
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gst_object_unref (window);
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return TRUE;
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failure:
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if (window)
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gst_object_unref (window);
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return FALSE;
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}
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static void
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gst_gl_context_egl_destroy_context (GstGLContext * context)
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{
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GstGLContextEGL *egl;
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egl = GST_GL_CONTEXT_EGL (context);
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gst_gl_context_egl_activate (context, FALSE);
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if (egl->egl_surface)
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eglDestroySurface (egl->egl_surface, egl->egl_display);
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if (egl->egl_context)
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eglDestroyContext (egl->egl_display, egl->egl_context);
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if (egl->egl_display) {
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eglTerminate (egl->egl_display);
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eglReleaseThread ();
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}
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}
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static gboolean
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gst_gl_context_egl_activate (GstGLContext * context, gboolean activate)
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{
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GstGLContextEGL *egl;
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gboolean result;
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egl = GST_GL_CONTEXT_EGL (context);
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if (activate)
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result = eglMakeCurrent (egl->egl_display, egl->egl_surface,
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egl->egl_surface, egl->egl_context);
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else
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result = eglMakeCurrent (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_context_egl_get_gl_context (GstGLContext * context)
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{
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return (guintptr) GST_GL_CONTEXT_EGL (context)->egl_context;
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}
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static void
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gst_gl_context_egl_swap_buffers (GstGLContext * context)
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{
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GstGLContextEGL *egl;
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egl = GST_GL_CONTEXT_EGL (context);
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eglSwapBuffers (egl->egl_display, egl->egl_surface);
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}
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static GstGLAPI
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gst_gl_context_egl_get_gl_api (GstGLContext * context)
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{
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return GST_GL_CONTEXT_EGL (context)->gl_api;
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}
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static gpointer
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gst_gl_context_egl_get_proc_address (GstGLContext * context, const gchar * name)
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{
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gpointer result = NULL;
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/* FIXME: On Android this returns wrong addresses for non-EGL functions */
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#ifdef GST_GL_HAVE_WINDOW_ANDROID
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if (!(result = gst_gl_context_default_get_proc_address (context, name))) {
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if (g_str_has_prefix (name, "egl"))
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result = eglGetProcAddress (name);
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}
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#else
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if (!(result = eglGetProcAddress (name))) {
|
|
result = gst_gl_context_default_get_proc_address (context, name);
|
|
}
|
|
#endif
|
|
|
|
return result;
|
|
}
|