Index: content/browser/renderer_host/offscreen_canvas_surface_manager.cc |
diff --git a/content/browser/renderer_host/offscreen_canvas_surface_manager.cc b/content/browser/renderer_host/offscreen_canvas_surface_manager.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..912e75a1416821100e77dc3f90dc87c76bcc380d |
--- /dev/null |
+++ b/content/browser/renderer_host/offscreen_canvas_surface_manager.cc |
@@ -0,0 +1,63 @@ |
+// Copyright 2016 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 "content/browser/renderer_host/offscreen_canvas_surface_manager.h" |
+ |
+namespace content { |
+ |
+namespace { |
+OffscreenCanvasSurfaceManager* g_manager = NULL; |
+} |
+ |
+OffscreenCanvasSurfaceManager::OffscreenCanvasSurfaceManager() {} |
+ |
+OffscreenCanvasSurfaceManager::~OffscreenCanvasSurfaceManager() { |
+ registered_surface_instances_.clear(); |
+ registered_compositor_frame_sink_instances_.clear(); |
+} |
+ |
+OffscreenCanvasSurfaceManager* OffscreenCanvasSurfaceManager::GetInstance() { |
+ if (!g_manager) { |
+ g_manager = new OffscreenCanvasSurfaceManager(); |
dcheng
2016/11/08 18:30:23
Let's just use a leaky LazyInstance, unless there'
xlai (Olivia)
2016/11/10 15:45:11
I'm following the example of ImageTransportFactory
dcheng
2016/11/11 08:36:40
I guess I'm missing something still. Don't the obj
|
+ } |
+ return g_manager; |
+} |
+ |
+void OffscreenCanvasSurfaceManager::Terminate() { |
+ if (g_manager) { |
+ delete g_manager; |
+ g_manager = NULL; |
+ } |
+} |
+ |
+void OffscreenCanvasSurfaceManager::RegisterOffscreenCanvasSurfaceInstance( |
+ int canvas_id, |
+ OffscreenCanvasSurfaceImpl* surface_instance) { |
+ DCHECK(surface_instance); |
+ DCHECK_EQ(registered_surface_instances_.count(canvas_id), 0u); |
+ registered_surface_instances_[canvas_id] = surface_instance->GetWeakPtr(); |
+} |
+ |
+void OffscreenCanvasSurfaceManager::UnregisterOffscreenCanvasSurfaceInstance( |
+ int canvas_id) { |
+ DCHECK_EQ(registered_surface_instances_.count(canvas_id), 1u); |
+ registered_surface_instances_.erase(canvas_id); |
+} |
+ |
+void OffscreenCanvasSurfaceManager::RegisterCompositorFrameSinkInstance( |
+ int canvas_id, |
+ OffscreenCanvasCompositorFrameSink* surface_instance) { |
+ DCHECK(surface_instance); |
+ DCHECK_EQ(registered_compositor_frame_sink_instances_.count(canvas_id), 0u); |
+ registered_compositor_frame_sink_instances_[canvas_id] = |
+ surface_instance->GetWeakPtr(); |
+} |
+ |
+void OffscreenCanvasSurfaceManager::UnregisterCompositorFrameSinkInstance( |
+ int canvas_id) { |
+ DCHECK_EQ(registered_compositor_frame_sink_instances_.count(canvas_id), 1u); |
+ registered_compositor_frame_sink_instances_.erase(canvas_id); |
+} |
+ |
+} // namespace content |