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Unified Diff: media/video/capture/screen/screen_capturer_helper.h

Issue 15692018: Remove screen capturers from media/video/capture/screen. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 7 years, 6 months ago
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Index: media/video/capture/screen/screen_capturer_helper.h
diff --git a/media/video/capture/screen/screen_capturer_helper.h b/media/video/capture/screen/screen_capturer_helper.h
deleted file mode 100644
index 35260b2271ae1d0f6525721cf432a41cb6d756e5..0000000000000000000000000000000000000000
--- a/media/video/capture/screen/screen_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 MEDIA_VIDEO_CAPTURE_SCREEN_SCREEN_CAPTURER_HELPER_H_
-#define MEDIA_VIDEO_CAPTURE_SCREEN_SCREEN_CAPTURER_HELPER_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "base/synchronization/lock.h"
-#include "media/base/media_export.h"
-#include "third_party/skia/include/core/SkRegion.h"
-#include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
-#include "third_party/webrtc/modules/desktop_capture/desktop_region.h"
-
-namespace media {
-
-// ScreenCapturerHelper is intended to be used by an implementation of the
-// ScreenCapturer interface. It maintains a thread-safe invalid region, and
-// the size of the most recently captured screen, on behalf of the
-// ScreenCapturer that owns it.
-class MEDIA_EXPORT ScreenCapturerHelper {
- public:
- ScreenCapturerHelper();
- ~ScreenCapturerHelper();
-
- // Clear out the invalid region.
- void ClearInvalidRegion();
-
- // Invalidate the specified region.
- void InvalidateRegion(const webrtc::DesktopRegion& invalid_region);
-
- // Invalidate the entire screen, of a given size.
- void InvalidateScreen(const webrtc::DesktopSize& size);
-
- // Copies current invalid region to |invalid_region| clears invalid region
- // storage for the next frame.
- void TakeInvalidRegion(webrtc::DesktopRegion* invalid_region);
-
- // Access the size of the most recently captured screen.
- const webrtc::DesktopSize& size_most_recent() const;
- void set_size_most_recent(const webrtc::DesktopSize& 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 TakeInvalidRegion()
- // 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.
- webrtc::DesktopSize 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(ScreenCapturerHelper);
-};
-
-} // namespace media
-
-#endif // MEDIA_VIDEO_CAPTURE_SCREEN_SCREEN_CAPTURER_HELPER_H_
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