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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "remoting/capturer/video_frame_capturer_helper.h" | 5 #include "media/video/capture/screen/screen_capturer_helper.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 | 8 |
9 #include "base/logging.h" | 9 #include "base/logging.h" |
10 #include "base/memory/scoped_ptr.h" | 10 #include "base/memory/scoped_ptr.h" |
11 | 11 |
12 namespace remoting { | 12 namespace media { |
13 | 13 |
14 VideoFrameCapturerHelper::VideoFrameCapturerHelper() : | 14 ScreenCapturerHelper::ScreenCapturerHelper() : |
15 size_most_recent_(SkISize::Make(0, 0)), | 15 size_most_recent_(SkISize::Make(0, 0)), |
16 log_grid_size_(0) { | 16 log_grid_size_(0) { |
17 } | 17 } |
18 | 18 |
19 VideoFrameCapturerHelper::~VideoFrameCapturerHelper() { | 19 ScreenCapturerHelper::~ScreenCapturerHelper() { |
20 } | 20 } |
21 | 21 |
22 void VideoFrameCapturerHelper::ClearInvalidRegion() { | 22 void ScreenCapturerHelper::ClearInvalidRegion() { |
23 base::AutoLock auto_invalid_region_lock(invalid_region_lock_); | 23 base::AutoLock auto_invalid_region_lock(invalid_region_lock_); |
24 invalid_region_.setEmpty(); | 24 invalid_region_.setEmpty(); |
25 } | 25 } |
26 | 26 |
27 void VideoFrameCapturerHelper::InvalidateRegion( | 27 void ScreenCapturerHelper::InvalidateRegion( |
28 const SkRegion& invalid_region) { | 28 const SkRegion& invalid_region) { |
29 base::AutoLock auto_invalid_region_lock(invalid_region_lock_); | 29 base::AutoLock auto_invalid_region_lock(invalid_region_lock_); |
30 invalid_region_.op(invalid_region, SkRegion::kUnion_Op); | 30 invalid_region_.op(invalid_region, SkRegion::kUnion_Op); |
31 } | 31 } |
32 | 32 |
33 void VideoFrameCapturerHelper::InvalidateScreen(const SkISize& size) { | 33 void ScreenCapturerHelper::InvalidateScreen(const SkISize& size) { |
34 base::AutoLock auto_invalid_region_lock(invalid_region_lock_); | 34 base::AutoLock auto_invalid_region_lock(invalid_region_lock_); |
35 invalid_region_.op(SkIRect::MakeWH(size.width(), size.height()), | 35 invalid_region_.op(SkIRect::MakeWH(size.width(), size.height()), |
36 SkRegion::kUnion_Op); | 36 SkRegion::kUnion_Op); |
37 } | 37 } |
38 | 38 |
39 void VideoFrameCapturerHelper::InvalidateFullScreen() { | 39 void ScreenCapturerHelper::InvalidateFullScreen() { |
40 if (!size_most_recent_.isZero()) | 40 if (!size_most_recent_.isZero()) |
41 InvalidateScreen(size_most_recent_); | 41 InvalidateScreen(size_most_recent_); |
42 } | 42 } |
43 | 43 |
44 void VideoFrameCapturerHelper::SwapInvalidRegion(SkRegion* invalid_region) { | 44 void ScreenCapturerHelper::SwapInvalidRegion(SkRegion* invalid_region) { |
45 { | 45 { |
46 base::AutoLock auto_invalid_region_lock(invalid_region_lock_); | 46 base::AutoLock auto_invalid_region_lock(invalid_region_lock_); |
47 invalid_region->swap(invalid_region_); | 47 invalid_region->swap(invalid_region_); |
48 } | 48 } |
49 if (log_grid_size_ > 0) { | 49 if (log_grid_size_ > 0) { |
50 scoped_ptr<SkRegion> expanded_region( | 50 scoped_ptr<SkRegion> expanded_region( |
51 ExpandToGrid(*invalid_region, log_grid_size_)); | 51 ExpandToGrid(*invalid_region, log_grid_size_)); |
52 invalid_region->swap(*expanded_region); | 52 invalid_region->swap(*expanded_region); |
53 invalid_region->op(SkRegion(SkIRect::MakeSize(size_most_recent_)), | 53 invalid_region->op(SkRegion(SkIRect::MakeSize(size_most_recent_)), |
54 SkRegion::kIntersect_Op); | 54 SkRegion::kIntersect_Op); |
55 } | 55 } |
56 } | 56 } |
57 | 57 |
58 void VideoFrameCapturerHelper::SetLogGridSize(int log_grid_size) { | 58 void ScreenCapturerHelper::SetLogGridSize(int log_grid_size) { |
59 log_grid_size_ = log_grid_size; | 59 log_grid_size_ = log_grid_size; |
60 } | 60 } |
61 | 61 |
62 const SkISize& VideoFrameCapturerHelper::size_most_recent() const { | 62 const SkISize& ScreenCapturerHelper::size_most_recent() const { |
63 return size_most_recent_; | 63 return size_most_recent_; |
64 } | 64 } |
65 | 65 |
66 void VideoFrameCapturerHelper::set_size_most_recent(const SkISize& size) { | 66 void ScreenCapturerHelper::set_size_most_recent(const SkISize& size) { |
67 size_most_recent_ = size; | 67 size_most_recent_ = size; |
68 } | 68 } |
69 | 69 |
70 // Returns the largest multiple of |n| that is <= |x|. | 70 // Returns the largest multiple of |n| that is <= |x|. |
71 // |n| must be a power of 2. |nMask| is ~(|n| - 1). | 71 // |n| must be a power of 2. |nMask| is ~(|n| - 1). |
72 static int DownToMultiple(int x, int nMask) { | 72 static int DownToMultiple(int x, int nMask) { |
73 return (x & nMask); | 73 return (x & nMask); |
74 } | 74 } |
75 | 75 |
76 // Returns the smallest multiple of |n| that is >= |x|. | 76 // Returns the smallest multiple of |n| that is >= |x|. |
77 // |n| must be a power of 2. |nMask| is ~(|n| - 1). | 77 // |n| must be a power of 2. |nMask| is ~(|n| - 1). |
78 static int UpToMultiple(int x, int n, int nMask) { | 78 static int UpToMultiple(int x, int n, int nMask) { |
79 return ((x + n - 1) & nMask); | 79 return ((x + n - 1) & nMask); |
80 } | 80 } |
81 | 81 |
82 scoped_ptr<SkRegion> VideoFrameCapturerHelper::ExpandToGrid( | 82 scoped_ptr<SkRegion> ScreenCapturerHelper::ExpandToGrid( |
83 const SkRegion& region, | 83 const SkRegion& region, |
84 int log_grid_size) { | 84 int log_grid_size) { |
85 DCHECK(log_grid_size >= 1); | 85 DCHECK(log_grid_size >= 1); |
86 int grid_size = 1 << log_grid_size; | 86 int grid_size = 1 << log_grid_size; |
87 int grid_size_mask = ~(grid_size - 1); | 87 int grid_size_mask = ~(grid_size - 1); |
88 // Count the rects in the region. | 88 // Count the rects in the region. |
89 int rectNum = 0; | 89 int rectNum = 0; |
90 SkRegion::Iterator iter(region); | 90 SkRegion::Iterator iter(region); |
91 while (!iter.done()) { | 91 while (!iter.done()) { |
92 iter.next(); | 92 iter.next(); |
(...skipping 15 matching lines...) Expand all Loading... |
108 top = DownToMultiple(top, grid_size_mask); | 108 top = DownToMultiple(top, grid_size_mask); |
109 bottom = UpToMultiple(bottom, grid_size, grid_size_mask); | 109 bottom = UpToMultiple(bottom, grid_size, grid_size_mask); |
110 rects[rectI++] = SkIRect::MakeLTRB(left, top, right, bottom); | 110 rects[rectI++] = SkIRect::MakeLTRB(left, top, right, bottom); |
111 } | 111 } |
112 // Make the union of the expanded rects. | 112 // Make the union of the expanded rects. |
113 scoped_ptr<SkRegion> regionNew(new SkRegion()); | 113 scoped_ptr<SkRegion> regionNew(new SkRegion()); |
114 regionNew->setRects(rects.get(), rectNum); | 114 regionNew->setRects(rects.get(), rectNum); |
115 return regionNew.Pass(); | 115 return regionNew.Pass(); |
116 } | 116 } |
117 | 117 |
118 } // namespace remoting | 118 } // namespace media |
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