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 mojo::gfx::ImagePipe {
+ public:
+  ImagePipeConsumerEndpoint(
+      mojo::InterfaceRequest<mojo::gfx::ImagePipe> request,
+      mojo::gfx::SupportedImagePropertiesPtr supported_properties,
+      ImagePipeConsumerDelegate* delegate);
+  ~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);

[jamesr, 2016/02/18 20:40:58]

google c++ style is parameters are either pointers, values, const references, or
rvalue references. non-const lvalue refs are banned:
http://google.github.io/styleguide/cppguide.html#Reference_Arguments

[Forrest Reiling, 2016/02/25 00:35:14]

Good to know. Done.

+
+  // Releases an image back to the producer
+  void ReleaseImage(uint32_t id, mojo::gfx::PresentationStatus status);
+
+  void SetSupportedImageProperties(
+      mojo::gfx::SupportedImagePropertiesPtr supported_properties);
+
+  // For testing only, makes fatal errors not quite fatal, which allows tests
+  // to cause a fatal error and check that it was caught correctly without
+  // dying a horrible death in the process. If you are using this for something
+  // other than testing you are probably doing something very wrong.
+  void DisableFatalErrors();
+
+ private:
+  void CloseEndpoint();
+
+  // Inherited from mojo::gfx::ImagePipe, see image_pipe.mojom for comments
+  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;
+
+  ImagePipeEndpoint state_tacker_;

[jamesr, 2016/02/18 20:40:58]

"tracker"?

[Forrest Reiling, 2016/02/25 00:35:14]

Its amazing how many times I copy and pasted that without noticing lol

+  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_