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Unified Diff: content/port/browser/render_widget_host_view_frame_subscriber.h

Issue 261383002: Remove content/port directory and move the 3 remaining interfaces to content/public. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: Created 6 years, 7 months ago
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Index: content/port/browser/render_widget_host_view_frame_subscriber.h
===================================================================
--- content/port/browser/render_widget_host_view_frame_subscriber.h (revision 268318)
+++ content/port/browser/render_widget_host_view_frame_subscriber.h (working copy)
@@ -1,70 +0,0 @@
-// Copyright (c) 2012 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 CONTENT_PORT_BROWSER_RENDER_WIDGET_HOST_VIEW_FRAME_SUBSCRIBER_H_
-#define CONTENT_PORT_BROWSER_RENDER_WIDGET_HOST_VIEW_FRAME_SUBSCRIBER_H_
-
-#include "base/callback.h"
-#include "base/time/time.h"
-
-namespace gfx {
-class Rect;
-class Size;
-} // namespace gfx
-
-namespace media {
-class VideoFrame;
-} // namespace media
-
-namespace content {
-
-// Defines an interface for listening to events of frame presentation and to
-// instruct the platform layer (i.e. RenderWidgetHostView) to copy a frame.
-//
-// Further processing is possible (e.g. scale and color space conversion)
-// through this interface. See ShouldCaptureFrame() for details.
-//
-// It is platform dependent which thread this object lives on, but it is
-// guaranteed to be used on a single thread.
-class RenderWidgetHostViewFrameSubscriber {
- public:
- virtual ~RenderWidgetHostViewFrameSubscriber() {}
-
- // Called when a captured frame is available or the frame is no longer
- // needed by the platform layer.
- //
- // If |frame_captured| is true then frame provided contains valid content and
- // |timestamp| is the time when the frame was painted.
- //
- // If |frame_captured| is false then the content in frame provided is
- // invalid. There was an error during the process of frame capture or the
- // platform layer is shutting down. |timestamp| is also invalid in this case.
- typedef base::Callback<void(base::TimeTicks /* timestamp */,
- bool /* frame_captured */)> DeliverFrameCallback;
-
- // Called when a new frame is going to be presented at time
- // |present_time|. Implementation can decide whether the current frame should
- // be captured or not.
- //
- // Return true if the current frame should be captured. If so, |storage|
- // should will be set to hold an appropriately sized and allocated buffer
- // into which to copy the frame. The platform presenter will perform scaling
- // and color space conversion to fit into the output frame.
- //
- // Destination format is determined by |storage|, currently only
- // media::VideoFrame::YV12 is supported. Platform layer will perform color
- // space conversion if needed.
- //
- // When the frame is available |callback| will be called. It is up to the
- // platform layer to decide when to deliver a captured frame.
- //
- // Return false if the current frame should not be captured.
- virtual bool ShouldCaptureFrame(base::TimeTicks present_time,
- scoped_refptr<media::VideoFrame>* storage,
- DeliverFrameCallback* callback) = 0;
-};
-
-} // namespace content
-
-#endif // CONTENT_PORT_BROWSER_RENDER_WIDGET_HOST_VIEW_FRAME_SUBSCRIBER_H_
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