gl: Add EGLDisplay display subclass

gst-libs/gst/gl/Makefile.am

@@ -25,9 +25,32 @@ libgstgl_@GST_API_VERSION@_la_SOURCES = \
         gstglutils.c \
         gstglframebuffer.c
 
+libgstgl_@GST_API_VERSION@includedir = $(includedir)/gstreamer-@GST_API_VERSION@/gst/gl
+libgstgl_@GST_API_VERSION@include_HEADERS = \
+	gstglwindow.h \
+	gstgldisplay.h \
+	gstglcontext.h \
+	gstglmemory.h \
+	gstglbufferpool.h \
+	gstgles2.h \
+	gstglfilter.h \
+	gstglmixer.h \
+	gstglmixerpad.h \
+	gstglshadervariables.h \
+	gstglshader.h \
+	gstgldownload.h \
+	gstglupload.h \
+	gstglapi.h \
+	gstglfeature.h \
+	gstglutils.h \
+	gstglframebuffer.h \
+	gstgl_fwd.h \
+	gl.h
+
 libgstgl_@GST_API_VERSION@_la_LIBADD = \
 	$(GST_PLUGINS_BASE_LIBS) \
 	-lgstvideo-$(GST_API_VERSION) \
+	-lgstegl-$(GST_API_VERSION) \
 	$(GST_BASE_LIBS) \
 	$(GST_LIBS) \
 	$(GL_LIBS)
@@ -63,32 +86,12 @@ libgstgl_@GST_API_VERSION@_la_LIBADD += android/libgstgl-android.la
 endif
 
 if USE_EGL
-libgstgl_@GST_API_VERSION@_la_SOURCES += egl/gstglcontext_egl.c
+libgstgl_@GST_API_VERSION@_la_SOURCES += egl/gstglcontext_egl.c \
+	egl/gstgldisplay_egl.c
+libgstgl_@GST_API_VERSION@include_HEADERS += egl/gstgldisplay_egl.h
 noinst_HEADERS += egl/gstglcontext_egl.h
 endif
 
-libgstgl_@GST_API_VERSION@includedir = $(includedir)/gstreamer-@GST_API_VERSION@/gst/gl
-libgstgl_@GST_API_VERSION@include_HEADERS = \
-	gstglwindow.h \
-	gstgldisplay.h \
-	gstglcontext.h \
-	gstglmemory.h \
-	gstglbufferpool.h \
-	gstgles2.h \
-	gstglfilter.h \
-	gstglmixer.h \
-	gstglmixerpad.h \
-	gstglshadervariables.h \
-	gstglshader.h \
-	gstgldownload.h \
-	gstglupload.h \
-	gstglapi.h \
-	gstglfeature.h \
-	gstglutils.h \
-	gstglframebuffer.h \
-	gstgl_fwd.h \
-	gl.h
-
 nodist_libgstgl_@GST_API_VERSION@include_HEADERS = \
 	$(built_header_configure)
 

gst-libs/gst/gl/egl/gstglcontext_egl.c

@@ -209,7 +209,7 @@ gst_gl_context_egl_create_context (GstGLContext * context,
 {
   GstGLContextEGL *egl;
   GstGLWindow *window = NULL;
-  EGLNativeWindowType window_handle;
+  EGLNativeWindowType window_handle = (EGLNativeWindowType) 0;
   gint i = 0;
   EGLint context_attrib[3];
   EGLint majorVersion;
@@ -217,7 +217,6 @@ gst_gl_context_egl_create_context (GstGLContext * context,
   const gchar *egl_exts;
   gboolean need_surface = TRUE;
   guintptr external_gl_context = 0;
-  guintptr native_display;
   GstGLDisplay *display;
 
   egl = GST_GL_CONTEXT_EGL (context);
@@ -240,24 +239,29 @@ gst_gl_context_egl_create_context (GstGLContext * context,
   }
 
   display = gst_gl_context_get_display (context);
-  native_display = gst_gl_display_get_handle (display);
 
-  if (!native_display) {
-    GstGLWindow *window = NULL;
-    GST_WARNING ("Failed to get a global display handle, falling back to "
-        "per-window display handles.  Context sharing may not work");
+  if (display->type == GST_GL_DISPLAY_TYPE_EGL) {
+    egl->egl_display = (EGLDisplay) gst_gl_display_get_handle (display);
+  } else {
+    guintptr native_display = gst_gl_display_get_handle (display);
 
-    if (other_context)
-      window = gst_gl_context_get_window (other_context);
-    if (!window)
-      window = gst_gl_context_get_window (context);
-    if (window) {
-      native_display = gst_gl_window_get_display (window);
-      gst_object_unref (window);
+    if (!native_display) {
+      GstGLWindow *window = NULL;
+      GST_WARNING ("Failed to get a global display handle, falling back to "
+          "per-window display handles.  Context sharing may not work");
+
+      if (other_context)
+        window = gst_gl_context_get_window (other_context);
+      if (!window)
+        window = gst_gl_context_get_window (context);
+      if (window) {
+        native_display = gst_gl_window_get_display (window);
+        gst_object_unref (window);
+      }
     }
-  }
 
-  egl->egl_display = eglGetDisplay ((EGLNativeDisplayType) native_display);
+    egl->egl_display = eglGetDisplay ((EGLNativeDisplayType) native_display);
+  }
   gst_object_unref (display);
 
   if (eglInitialize (egl->egl_display, &majorVersion, &minorVersion)) {
@@ -358,8 +362,9 @@ gst_gl_context_egl_create_context (GstGLContext * context,
 #endif
   }
 
-  window_handle =
-      (EGLNativeWindowType) gst_gl_window_get_window_handle (window);
+  if (window)
+    window_handle =
+        (EGLNativeWindowType) gst_gl_window_get_window_handle (window);
 
   if (window_handle) {
     egl->egl_surface =
@@ -398,7 +403,8 @@ gst_gl_context_egl_create_context (GstGLContext * context,
     }
   }
 
-  gst_object_unref (window);
+  if (window)
+    gst_object_unref (window);
 
   return TRUE;
 
@@ -424,10 +430,7 @@ gst_gl_context_egl_destroy_context (GstGLContext * context)
   if (egl->egl_context)
     eglDestroyContext (egl->egl_display, egl->egl_context);
 
-  if (egl->egl_display) {
-    eglTerminate (egl->egl_display);
-    eglReleaseThread ();
-  }
+  eglReleaseThread ();
 }
 
 static gboolean

gst-libs/gst/gl/egl/gstgldisplay_egl.c

@@ -0,0 +1,150 @@
+/*
+ * GStreamer
+ * Copyright (C) 2014 Matthew Waters <ystreet00@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gl/egl/gstgldisplay_egl.h>
+
+GST_DEBUG_CATEGORY_STATIC (gst_gl_display_debug);
+#define GST_CAT_DEFAULT gst_gl_display_debug
+
+G_DEFINE_TYPE (GstGLDisplayEGL, gst_gl_display_egl, GST_TYPE_GL_DISPLAY);
+
+static void gst_gl_display_egl_finalize (GObject * object);
+static guintptr gst_gl_display_egl_get_handle (GstGLDisplay * display);
+
+static void
+gst_gl_display_egl_class_init (GstGLDisplayEGLClass * klass)
+{
+  GST_GL_DISPLAY_CLASS (klass)->get_handle =
+      GST_DEBUG_FUNCPTR (gst_gl_display_egl_get_handle);
+
+  G_OBJECT_CLASS (klass)->finalize = gst_gl_display_egl_finalize;
+}
+
+static void
+gst_gl_display_egl_init (GstGLDisplayEGL * display_egl)
+{
+  GstGLDisplay *display = (GstGLDisplay *) display_egl;
+
+  display->type = GST_GL_DISPLAY_TYPE_EGL;
+  display_egl->foreign_display = FALSE;
+}
+
+static void
+gst_gl_display_egl_finalize (GObject * object)
+{
+  GstGLDisplayEGL *display_egl = GST_GL_DISPLAY_EGL (object);
+
+  if (display_egl->gst_display) {
+    gst_egl_display_unref (display_egl->gst_display);
+    display_egl->gst_display = NULL;
+  } else if (display_egl->display && !display_egl->foreign_display) {
+    eglTerminate (display_egl->display);
+    display_egl->display = NULL;
+  }
+
+  G_OBJECT_CLASS (gst_gl_display_egl_parent_class)->finalize (object);
+}
+
+/**
+ * gst_gl_display_egl_new:
+ * @name: (allow-none): a display name
+ *
+ * Create a new #GstGLDisplayEGL from the x11 display name.  See XOpenDisplay()
+ * for details on what is a valid name.
+ *
+ * Returns: (transfer full): a new #GstGLDisplayEGL or %NULL
+ */
+GstGLDisplayEGL *
+gst_gl_display_egl_new (void)
+{
+  GstGLDisplayEGL *ret;
+
+  GST_DEBUG_CATEGORY_GET (gst_gl_display_debug, "gldisplay");
+
+  ret = g_object_new (GST_TYPE_GL_DISPLAY_EGL, NULL);
+  ret->display = eglGetDisplay ((EGLNativeDisplayType) EGL_DEFAULT_DISPLAY);
+
+  if (!ret->display) {
+    GST_ERROR ("Failed to open EGL display connection");
+  }
+
+  return ret;
+}
+
+/**
+ * gst_gl_display_egl_new_with_display:
+ * @display: an existing, x11 display
+ *
+ * Creates a new display connection from a X11 Display.
+ *
+ * Returns: (transfer full): a new #GstGLDisplayEGL
+ */
+GstGLDisplayEGL *
+gst_gl_display_egl_new_with_egl_display (EGLDisplay * display)
+{
+  GstGLDisplayEGL *ret;
+
+  g_return_val_if_fail (display != NULL, NULL);
+
+  GST_DEBUG_CATEGORY_GET (gst_gl_display_debug, "gldisplay");
+
+  ret = g_object_new (GST_TYPE_GL_DISPLAY_EGL, NULL);
+
+  ret->display = display;
+  ret->foreign_display = TRUE;
+
+  return ret;
+}
+
+/**
+ * gst_gl_display_egl_new_with_display:
+ * @display: an existing, x11 display
+ *
+ * Creates a new display connection from a X11 Display.
+ *
+ * Returns: (transfer full): a new #GstGLDisplayEGL
+ */
+GstGLDisplayEGL *
+gst_gl_display_egl_new_with_gst_egl_display (GstEGLDisplay * display)
+{
+  GstGLDisplayEGL *ret;
+
+  g_return_val_if_fail (display != NULL, NULL);
+
+  GST_DEBUG_CATEGORY_GET (gst_gl_display_debug, "gldisplay");
+
+  ret = g_object_new (GST_TYPE_GL_DISPLAY_EGL, NULL);
+
+  ret->gst_display = gst_egl_display_ref (display);
+  ret->display = gst_egl_display_get (display);
+  ret->foreign_display = TRUE;
+
+  return ret;
+}
+
+static guintptr
+gst_gl_display_egl_get_handle (GstGLDisplay * display)
+{
+  return (guintptr) GST_GL_DISPLAY_EGL (display)->display;
+}

gst-libs/gst/gl/egl/gstgldisplay_egl.h

@@ -0,0 +1,73 @@
+/*
+ * GStreamer
+ * Copyright (C) 2014 Matthew Waters <ystreet00@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_GL_DISPLAY_EGL_H__
+#define __GST_GL_DISPLAY_EGL_H__
+
+#include <gst/gst.h>
+
+#include <gst/egl/egl.h>
+
+#include <gst/gl/gstgl_fwd.h>
+#include <gst/gl/gstgldisplay.h>
+
+G_BEGIN_DECLS
+
+GType gst_gl_display_egl_get_type (void);
+
+#define GST_TYPE_GL_DISPLAY_EGL             (gst_gl_display_egl_get_type())
+#define GST_GL_DISPLAY_EGL(obj)             (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_DISPLAY_EGL,GstGLDisplayEGL))
+#define GST_GL_DISPLAY_EGL_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_GL_DISPLAY_EGL,GstGLDisplayEGLClass))
+#define GST_IS_GL_DISPLAY_EGL(obj)          (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_DISPLAY_EGL))
+#define GST_IS_GL_DISPLAY_EGL_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_GL_DISPLAY_EGL))
+#define GST_GL_DISPLAY_EGL_CAST(obj)        ((GstGLDisplayEGL*)(obj))
+
+typedef struct _GstGLDisplayEGL GstGLDisplayEGL;
+typedef struct _GstGLDisplayEGLClass GstGLDisplayEGLClass;
+
+/**
+ * GstGLDisplayEGL:
+ *
+ * the contents of a #GstGLDisplayEGL are private and should only be accessed
+ * through the provided API
+ */
+struct _GstGLDisplayEGL
+{
+  GstGLDisplay          parent;
+
+  /* <private> */
+  GstEGLDisplay *gst_display;
+  EGLDisplay *display;
+
+  gboolean foreign_display;
+};
+
+struct _GstGLDisplayEGLClass
+{
+  GstGLDisplayClass object_class;
+};
+
+GstGLDisplayEGL *gst_gl_display_egl_new (void);
+GstGLDisplayEGL *gst_gl_display_egl_new_with_egl_display (EGLDisplay *display);
+GstGLDisplayEGL *gst_gl_display_egl_new_with_gst_egl_display (GstEGLDisplay *display);
+
+G_END_DECLS
+
+#endif /* __GST_GL_DISPLAY_EGL_H__ */

gst-libs/gst/gl/gstgldisplay.c

@@ -42,6 +42,9 @@
 #if GST_GL_HAVE_WINDOW_X11
 #include <gst/gl/x11/gstgldisplay_x11.h>
 #endif
+#if GST_GL_HAVE_PLATFORM_EGL
+#include <gst/gl/egl/gstgldisplay_egl.h>
+#endif
 
 GST_DEBUG_CATEGORY_STATIC (gst_context);
 GST_DEBUG_CATEGORY_STATIC (gst_gl_display_debug);
@@ -127,6 +130,10 @@ gst_gl_display_new (void)
 #if GST_GL_HAVE_WINDOW_X11
   if (!display && (!user_choice || g_strstr_len (user_choice, 3, "x11")))
     display = GST_GL_DISPLAY (gst_gl_display_x11_new (NULL));
+#endif
+#if GST_GL_HAVE_PLATFORM_EGL
+  if (!display && (!user_choice || g_strstr_len (user_choice, 3, "egl")))
+    display = GST_GL_DISPLAY (gst_gl_display_egl_new ());
 #endif
   if (!display) {
     /* subclass returned a NULL window */

gst-libs/gst/gl/gstgldisplay.h

@@ -47,8 +47,8 @@ typedef enum
   GST_GL_DISPLAY_TYPE_WAYLAND = (1 << 1),
   GST_GL_DISPLAY_TYPE_COCOA = (1 << 2),
   GST_GL_DISPLAY_TYPE_WIN32 = (1 << 3),
-  GST_GL_DISPLAY_TYPE_ANDROID = (1 << 4),
-  GST_GL_DISPLAY_TYPE_DISPMANX = (1 << 5),
+  GST_GL_DISPLAY_TYPE_DISPMANX = (1 << 4),
+  GST_GL_DISPLAY_TYPE_EGL = (1 << 5),
 
   GST_GL_DISPLAY_TYPE_ANY = G_MAXUINT32
 } GstGLDisplayType;