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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef REMOTING_HOST_DIFFER_BLOCK_H_ | |
scherkus (not reviewing)
2013/01/25 05:03:40
wrong header guard
| |
6 #define REMOTING_HOST_DIFFER_BLOCK_H_ | |
7 | |
8 #include "base/basictypes.h" | |
9 #include "media/base/media_export.h" | |
10 | |
11 namespace media { | |
12 | |
13 // Size (in pixels) of each square block used for diffing. This must be a | |
14 // multiple of sizeof(uint64)/8. | |
15 const int kBlockSize = 32; | |
16 | |
17 // Format: BGRA 32 bit. | |
18 const int kBytesPerPixel = 4; | |
19 | |
20 // Low level functions to compare 2 blocks of pixels. Zero means the blocks | |
21 // are identical. One - the blocks are different. | |
22 MEDIA_EXPORT int BlockDifference(const uint8* image1, | |
23 const uint8* image2, | |
24 int stride); | |
25 | |
26 } // namespace media | |
27 | |
28 #endif // REMOTING_HOST_DIFFER_BLOCK_H_ | |
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