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Unified Diff: remoting/host/video_frame_capturer_helper.h

Issue 11470028: Move screen capturers to remoting/capturer. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 8 years ago
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Index: remoting/host/video_frame_capturer_helper.h
diff --git a/remoting/host/video_frame_capturer_helper.h b/remoting/host/video_frame_capturer_helper.h
deleted file mode 100644
index 441f2ea04965e292168cef666002f9cdc5d03855..0000000000000000000000000000000000000000
--- a/remoting/host/video_frame_capturer_helper.h
+++ /dev/null
@@ -1,83 +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 REMOTING_HOST_VIDEO_FRAME_CAPTURER_HELPER_H_
-#define REMOTING_HOST_VIDEO_FRAME_CAPTURER_HELPER_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "base/synchronization/lock.h"
-#include "third_party/skia/include/core/SkRegion.h"
-
-namespace remoting {
-
-// VideoFrameCapturerHelper is intended to be used by an implementation of the
-// VideoFrameCapturer interface. It maintains a thread-safe invalid region, and
-// the size of the most recently captured screen, on behalf of the
-// VideoFrameCapturer that owns it.
-class VideoFrameCapturerHelper {
- public:
- VideoFrameCapturerHelper();
- ~VideoFrameCapturerHelper();
-
- // Clear out the invalid region.
- void ClearInvalidRegion();
-
- // Invalidate the specified region.
- void InvalidateRegion(const SkRegion& invalid_region);
-
- // Invalidate the entire screen, of a given size.
- void InvalidateScreen(const SkISize& size);
-
- // Invalidate the entire screen, using the size of the most recently
- // captured screen.
- void InvalidateFullScreen();
-
- // Swap the given region with the stored invalid region.
- void SwapInvalidRegion(SkRegion* invalid_region);
-
- // Access the size of the most recently captured screen.
- const SkISize& size_most_recent() const;
- void set_size_most_recent(const SkISize& size);
-
- // Lossy compression can result in color values leaking between pixels in one
- // block. If part of a block changes, then unchanged parts of that block can
- // be changed in the compressed output. So we need to re-render an entire
- // block whenever part of the block changes.
- //
- // If |log_grid_size| is >= 1, then this function makes SwapInvalidRegion
- // produce an invalid region expanded so that its vertices lie on a grid of
- // size 2 ^ |log_grid_size|. The expanded region is then clipped to the size
- // of the most recently captured screen, as previously set by
- // set_size_most_recent().
- // If |log_grid_size| is <= 0, then the invalid region is not expanded.
- void SetLogGridSize(int log_grid_size);
-
- // Expands a region so that its vertices all lie on a grid.
- // The grid size must be >= 2, so |log_grid_size| must be >= 1.
- static scoped_ptr<SkRegion> ExpandToGrid(const SkRegion& region,
- int log_grid_size);
-
- private:
- // A region that has been manually invalidated (through InvalidateRegion).
- // These will be returned as dirty_region in the capture data during the next
- // capture.
- SkRegion invalid_region_;
-
- // A lock protecting |invalid_region_| across threads.
- base::Lock invalid_region_lock_;
-
- // The size of the most recently captured screen.
- SkISize size_most_recent_;
-
- // The log (base 2) of the size of the grid to which the invalid region is
- // expanded.
- // If the value is <= 0, then the invalid region is not expanded to a grid.
- int log_grid_size_;
-
- DISALLOW_COPY_AND_ASSIGN(VideoFrameCapturerHelper);
-};
-
-} // namespace remoting
-
-#endif // REMOTING_HOST_VIDEO_FRAME_CAPTURER_HELPER_H_

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