| 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_
|
|
|