/*

 * GStreamer

 * Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>

 * Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>

 * Copyright (C) 2013 Sebastian Dröge <slomo@circular-chaos.org>

 *

 * 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.

 */

/* TODO: - Window resize handling

 *       - Event handling input event handling

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <gst/gst.h>

#include <gst/gl/egl/gstglcontext_egl.h>

#include "gstglwindow_android_egl.h"

#include "../gstglwindow_private.h"

#define GST_CAT_DEFAULT gst_gl_window_debug

#define gst_gl_window_android_egl_parent_class parent_class

G_DEFINE_TYPE (GstGLWindowAndroidEGL, gst_gl_window_android_egl,

    GST_TYPE_GL_WINDOW);

static guintptr gst_gl_window_android_egl_get_display (GstGLWindow * window);

static guintptr gst_gl_window_android_egl_get_window_handle (GstGLWindow *

    window);

static void gst_gl_window_android_egl_set_window_handle (GstGLWindow * window,

    guintptr handle);

static void gst_gl_window_android_egl_draw (GstGLWindow * window);

static void

gst_gl_window_android_egl_class_init (GstGLWindowAndroidEGLClass * klass)

{

  GstGLWindowClass *window_class = (GstGLWindowClass *) klass;

  window_class->get_display =

      GST_DEBUG_FUNCPTR (gst_gl_window_android_egl_get_display);

  window_class->get_window_handle =

      GST_DEBUG_FUNCPTR (gst_gl_window_android_egl_get_window_handle);

  window_class->set_window_handle =

      GST_DEBUG_FUNCPTR (gst_gl_window_android_egl_set_window_handle);

  window_class->draw = GST_DEBUG_FUNCPTR (gst_gl_window_android_egl_draw);

}

static void

gst_gl_window_android_egl_init (GstGLWindowAndroidEGL * window)

{

}

/* Must be called in the gl thread */

GstGLWindowAndroidEGL *

gst_gl_window_android_egl_new (GstGLDisplay * display)

{

  GstGLWindowAndroidEGL *window;

  if ((gst_gl_display_get_handle_type (display) & GST_GL_DISPLAY_TYPE_EGL) == 0)

    /* we require an egl display to create android windows */

    return NULL;

  GST_DEBUG ("creating Android EGL window");

  window = g_object_new (GST_TYPE_GL_WINDOW_ANDROID_EGL, NULL);

  gst_object_ref_sink (window);

  return window;

}

static void

gst_gl_window_android_egl_set_window_handle (GstGLWindow * window,

    guintptr handle)

{

  GstGLWindowAndroidEGL *window_egl = GST_GL_WINDOW_ANDROID_EGL (window);

  window_egl->native_window = (EGLNativeWindowType) handle;

}

static guintptr

gst_gl_window_android_egl_get_window_handle (GstGLWindow * window)

{

  GstGLWindowAndroidEGL *window_egl = GST_GL_WINDOW_ANDROID_EGL (window);

  return (guintptr) window_egl->native_window;

}

static void

draw_cb (gpointer data)

{

  GstGLWindowAndroidEGL *window_egl = data;

  GstGLWindow *window = GST_GL_WINDOW (window_egl);

  GstGLContext *context = gst_gl_window_get_context (window);

  GstGLContextEGL *context_egl = GST_GL_CONTEXT_EGL (context);

  if (context_egl->egl_surface) {

    gint width, height;

    guint window_width, window_height;

    gst_gl_window_get_surface_dimensions (window, &window_width,

        &window_height);

    if (eglQuerySurface (context_egl->egl_display, context_egl->egl_surface,

            EGL_WIDTH, &width)

        && eglQuerySurface (context_egl->egl_display, context_egl->egl_surface,

            EGL_HEIGHT, &height)

        && (window->queue_resize || width != window_egl->window_width

            || height != window_egl->window_height)) {

      gst_gl_window_resize (window, width, height);

    }

  }

  if (window->draw)

    window->draw (window->draw_data);

  gst_gl_context_swap_buffers (context);

  gst_object_unref (context);

}

static void

gst_gl_window_android_egl_draw (GstGLWindow * window)

{

  gst_gl_window_send_message (window, (GstGLWindowCB) draw_cb, window);

}

static guintptr

gst_gl_window_android_egl_get_display (GstGLWindow * window)

{

  return 0;

}