Added ImagePipe

mojo/services/gfx/images/cpp/image_pipe_consumer_endpoint.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+#ifndef MOJO_SERVICES_GFX_IMAGES_INTERFACES_IMAGE_PIPE_CONSUMER_ENDPOINT_H_
+#define MOJO_SERVICES_GFX_IMAGES_INTERFACES_IMAGE_PIPE_CONSUMER_ENDPOINT_H_
+
+#include "image_pipe_endpoint.h"
+#include "mojo/public/c/system/macros.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+#include "mojo/services/gfx/images/cpp/image_pipe_consumer_delegate.h"
+#include "mojo/services/gfx/images/interfaces/image_pipe.mojom.h"
+
+namespace image_pipe {
+
+class ImagePipeConsumerEndpoint : private ImagePipeEndpoint,
+                                  private mojo::gfx::ImagePipe {
+ public:
+  ImagePipeConsumerEndpoint(
+      mojo::InterfaceRequest<mojo::gfx::ImagePipe> request,
+      mojo::gfx::SupportedImagePropertiesPtr supported_properties,
+      ImagePipeConsumerDelegate* delegate,
+      bool is_checked = true);
+  ~ImagePipeConsumerEndpoint() override;
+
+  // Different methods for selecting images out of the pipe based on various
+  // selection policies. If no images are available that match the selection
+  // criteria the calls will return false otherwise they will write the selected
+  // id into their id argument and return true
+
+  // Aquire the Image presented least recently (queue like behavior).
+  bool AcquireNextImage(uint32_t& id);
+
+  // Releases an image back to the producer
+  void ReleaseImage(uint32_t id, mojo::gfx::PresentationStatus status);
+
+  void SetSupportedImageProperties(
+      mojo::gfx::SupportedImagePropertiesPtr supported_properties);
+
+  void CloseEndpoint() override;
+
+ private:
+  // mojo::gfx::ImagePipe implementation
+  void AddImage(mojo::gfx::ImagePtr image, uint32_t id) override;
+  void RemoveImage(uint32_t id) override;
+  void PresentImage(uint32_t id, const PresentImageCallback& callback) override;
+  void FlushImages() override;
+  void GetSupportedImageProperties(
+      const GetSupportedImagePropertiesCallback& callback) override;
+
+  ImagePipeConsumerDelegate* delegate_;
+
+  mojo::gfx::SupportedImagePropertiesPtr supported_properties_;
+  bool supported_properties_dirty_;
+  GetSupportedImagePropertiesCallback supported_properties_callback_;
+  bool supported_properties_callback_pending_;
+
+  mojo::Binding<mojo::gfx::ImagePipe> image_pipe_binding_;
+
+  MOJO_DISALLOW_COPY_AND_ASSIGN(ImagePipeConsumerEndpoint);
+};
+
+}  // namespace image_pipe
+
+#endif  // MOJO_SERVICES_GFX_IMAGES_INTERFACES_IMAGE_PIPE_CONSUMER_ENDPOINT_H_