Initial checkin of the new Mozart compositor.

services/gfx/compositor/render/render_image.cc

Index: services/gfx/compositor/render/render_image.cc
diff --git a/services/gfx/compositor/render/render_image.cc b/services/gfx/compositor/render/render_image.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a62a289d9081419b7560e83e220d5cba833ccbc4
--- /dev/null
+++ b/services/gfx/compositor/render/render_image.cc
@@ -0,0 +1,74 @@
+// 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.
+
+#include "services/gfx/compositor/render/render_image.h"
+
+#include "base/bind.h"
+#include "base/location.h"
+#include "base/logging.h"
+#include "mojo/skia/ganesh_image_factory.h"
+#include "third_party/skia/include/core/SkImage.h"
+
+namespace compositor {
+
+class RenderImage::Releaser {
+ public:
+  Releaser(const scoped_refptr<base::TaskRunner>& task_runner,
+           const base::Closure& release_task)
+      : task_runner_(task_runner), release_task_(release_task) {
+    DCHECK(task_runner_);
+  }
+
+  ~Releaser() { task_runner_->PostTask(FROM_HERE, release_task_); }
+
+ private:
+  scoped_refptr<base::TaskRunner> const task_runner_;
+  base::Closure const release_task_;
+};
+
+class RenderImage::Generator : public mojo::skia::MailboxTextureImageGenerator {
+ public:
+  Generator(const std::shared_ptr<Releaser>& releaser,
+            const GLbyte mailbox_name[GL_MAILBOX_SIZE_CHROMIUM],
+            GLuint sync_point,
+            uint32_t width,
+            uint32_t height)
+      : MailboxTextureImageGenerator(mailbox_name, sync_point, width, height),
+        releaser_(releaser) {
+    DCHECK(releaser_);
+  }
+
+  ~Generator() override {}
+
+ private:
+  std::shared_ptr<Releaser> releaser_;
+};
+
+RenderImage::RenderImage(const skia::RefPtr<SkImage>& image,
+                         const std::shared_ptr<Releaser>& releaser)
+    : image_(image), releaser_(releaser) {
+  DCHECK(image_);
+  DCHECK(releaser_);
+}
+
+RenderImage::~RenderImage() {}
+
+std::shared_ptr<RenderImage> RenderImage::CreateFromMailboxTexture(
+    const GLbyte mailbox_name[GL_MAILBOX_SIZE_CHROMIUM],
+    GLuint sync_point,
+    uint32_t width,
+    uint32_t height,
+    const scoped_refptr<base::TaskRunner>& task_runner,
+    const base::Closure& release_task) {
+  std::shared_ptr<Releaser> releaser =
+      std::make_shared<Releaser>(task_runner, release_task);
+  skia::RefPtr<SkImage> image = skia::AdoptRef(SkImage::NewFromGenerator(
+      new Generator(releaser, mailbox_name, sync_point, width, height)));
+  if (!image)
+    return nullptr;
+
+  return std::make_shared<RenderImage>(image, releaser);
+}
+
+}  // namespace compositor