starboard/shared/x11/window_internal.h

// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef STARBOARD_SHARED_X11_WINDOW_INTERNAL_H_
#define STARBOARD_SHARED_X11_WINDOW_INTERNAL_H_

#include <X11/Xlib.h>
#include <X11/extensions/Xrender.h>

#include "starboard/configuration.h"
#include "starboard/shared/internal_only.h"
#include "starboard/shared/starboard/player/filter/cpu_video_frame.h"
#include "starboard/window.h"

struct SbWindowPrivate {
  SbWindowPrivate(Display* display, const SbWindowOptions* options);
  ~SbWindowPrivate();

  Window window;

  typedef ::starboard::shared::starboard::player::filter::CpuVideoFrame
      CpuVideoFrame;

  // The following functions composite graphics and the given video frame video
  // for this window. In kSbPlayerOutputModePunchOut mode, this is the only way
  // any graphics or video is presented in the window.  The video frame will be
  // rendered according to boundaries specified by the parameters.
  // CompositeVideoFrame() can be called multiple times in between
  // BeginComposite() and EndComposite() to display frames from multiple videos.
  void BeginComposite();
  void CompositeVideoFrame(
      int bounds_x,
      int bounds_y,
      int bounds_width,
      int bounds_height,
      const starboard::scoped_refptr<CpuVideoFrame>& frame);
  void EndComposite();

  // The cached XRender Picture that represents the window that is the
  // destination of the composition.
  Picture window_picture;

  // This pixmap is used to composite video and graphics before rendering onto
  // the actual window. This is necessary to avoid horrible flickering.
  Pixmap composition_pixmap;

  // A cached XRender Picture wrapper for |composition_pixmap|.
  Picture composition_picture;

  // This pixmap is used to load the video frame before stretching it onto the
  // |composition_pixmap|. This is done so that we can stretch it with XRender.
  Pixmap video_pixmap;

  // The width of the |video_pixmap|.
  int video_pixmap_width;

  // The height of the allocated |video_pixmap|.
  int video_pixmap_height;

  // A cached GC for the |video_pixmap| to upload the frame.
  GC video_pixmap_gc;

  // A cached XRender Picture wrapper for |video_pixmap|.
  Picture video_picture;

  // This mapped, but invisible window is bound to EGL and used to get the GL
  // graphics output into an XRender Picture that can be manually composited
  // with video.
  Window gl_window;

  // A cached XRender Picture wrapper for |gl_window|.
  Picture gl_picture;

  // The display that this window was created from.
  Display* display;

  // The width of this window.
  int width;

  // The height of this window.
  int height;

  // If there has been a resize that has not been handled by the application
  // yet.
  bool unhandled_resize;
};

#endif  // STARBOARD_SHARED_X11_WINDOW_INTERNAL_H_