ext/eglgles/video_platform_wrapper.c

/*
 * GStreamer Android Video Platform Wrapper
 * Copyright (C) 2012 Collabora Ltd.
 *   @author: Reynaldo H. Verdejo Pinochet <reynaldo@collabora.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Alternatively, the contents of this file may be used under the
 * GNU Lesser General Public License Version 2.1 (the "LGPL"), in
 * which case the following provisions apply instead of the ones
 * mentioned above:
 *
 * 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

#define EGL_EGLEXT_PROTOTYPES

#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>

#include <gst/gst.h>
#include "video_platform_wrapper.h"

#ifndef __BIONIC__
#include <X11/Xlib.h>
#endif

GST_DEBUG_CATEGORY_STATIC (eglgles_platform_wrapper);
#define GST_CAT_DEFAULT eglgles_platform_wrapper

/* XXX: Likely to be removed */
gboolean
platform_wrapper_init (void)
{
  GST_DEBUG_CATEGORY_INIT (eglgles_platform_wrapper,
      "EglGles Platform Wrapper", 0,
      "Platform dependent native-window utility routines for EglGles");
  return TRUE;
}

#ifndef __BIONIC__
EGLNativeWindowType
platform_create_native_window (gint width, gint height)
{
  Display *d;
  Window w;
  //XEvent e;
  int s;

  d = XOpenDisplay (NULL);
  if (d == NULL) {
    GST_CAT_ERROR (GST_CAT_DEFAULT, "Can't open X11 display");
    return (EGLNativeWindowType) 0;
  }

  s = DefaultScreen (d);
  w = XCreateSimpleWindow (d, RootWindow (d, s), 10, 10, width, height, 1,
      BlackPixel (d, s), WhitePixel (d, s));
  XStoreName (d, w, "eglglessink");
  XMapWindow (d, w);
  XFlush (d);
  return (EGLNativeWindowType) w;
}

gboolean
platform_destroy_native_window (EGLNativeDisplayType display,
    EGLNativeWindowType window)
{
  /* XXX: Should proly catch BadWindow */
  XDestroyWindow (display, window);
  return TRUE;
}

/* XXX: Missing implementation */
EGLint *
platform_crate_native_image_buffer (EGLNativeWindowType win, EGLConfig config,
    EGLNativeDisplayType display, const EGLint * egl_attribs)
{
  return NULL;
}

#else
/* Android does not support the creation of an egl window surface
 * from native code. Hence, we just return NULL here for the time
 * being. Function is left for reference as implementing it should
 * help us suport other EGL platforms.
 */
EGLNativeWindowType
platform_create_native_window (gint width, gint height)
{
  /* XXX: There was one example on AOSP that was using something
   * along the lines of window = android_createDisplaySurface();
   * but wasn't working properly.
   */

  GST_CAT_ERROR (GST_CAT_DEFAULT, "Android: Can't create native window");
  return (EGLNativeWindowType) 0;
}

gboolean
platform_destroy_native_window (EGLNativeDisplayType display,
    EGLNativeWindowType window)
{
  GST_CAT_ERROR (GST_CAT_DEFAULT, "Android: Can't destroy native window");
  return TRUE;
}

#endif