content/browser/compositor/reflector_impl.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_COMPOSITOR_REFLECTOR_IMPL_H_
   6 #define CONTENT_BROWSER_COMPOSITOR_REFLECTOR_IMPL_H_
   7
   8 #include "base/id_map.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "base/synchronization/lock.h"
  12 #include "content/browser/compositor/image_transport_factory.h"
  13 #include "content/common/content_export.h"
  14 #include "gpu/command_buffer/common/mailbox_holder.h"
  15 #include "ui/compositor/reflector.h"
  16 #include "ui/gfx/geometry/size.h"
  17
  18 namespace base { class MessageLoopProxy; }
  19
  20 namespace gfx { class Rect; }
  21
  22 namespace ui {
  23 class Compositor;
  24 class Layer;
  25 }
  26
  27 namespace content {
  28
  29 class OwnedMailbox;
  30 class BrowserCompositorOutputSurface;
  31
  32 // A reflector implementation that copies the framebuffer content
  33 // to the texture, then draw it onto the mirroring compositor.
  34 class CONTENT_EXPORT ReflectorImpl
  35     : public base::SupportsWeakPtr<ReflectorImpl>,
  36       public ui::Reflector {
  37  public:
  38   ReflectorImpl(ui::Compositor* mirrored_compositor,
  39                 ui::Layer* mirroring_layer);
  40   ~ReflectorImpl() override;
  41
  42   ui::Compositor* mirrored_compositor() { return mirrored_compositor_; }
  43
  44   void Shutdown();
  45
  46   void DetachFromOutputSurface();
  47
  48   // ui::Reflector implementation.
  49   void OnMirroringCompositorResized() override;
  50
  51   // Called in |BrowserCompositorOutputSurface::SwapBuffers| to copy
  52   // the full screen image to the |mailbox_| texture.
  53   void OnSourceSwapBuffers();
  54
  55   // Called in |BrowserCompositorOutputSurface::PostSubBuffer| copy
  56   // the sub image given by |rect| to the |mailbox_| texture.
  57   void OnSourcePostSubBuffer(const gfx::Rect& rect);
  58
  59   // Called when the source surface is bound and available.
  60   void OnSourceSurfaceReady(BrowserCompositorOutputSurface* surface);
  61
  62  private:
  63   void UpdateTexture(const gfx::Size& size, const gfx::Rect& redraw_rect);
  64
  65   ui::Compositor* mirrored_compositor_;
  66   ui::Layer* mirroring_layer_;
  67   scoped_refptr<OwnedMailbox> mailbox_;
  68   scoped_ptr<GLHelper> mirrored_compositor_gl_helper_;
  69   int mirrored_compositor_gl_helper_texture_id_;
  70   bool needs_set_mailbox_;
  71   bool flip_texture_;
  72   BrowserCompositorOutputSurface* output_surface_;
  73 };
  74
  75 }  // namespace content
  76
  77 #endif  // CONTENT_BROWSER_COMPOSITOR_REFLECTOR_IMPL_H_