| // Copyright (c) 2011 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_DIFFER_BLOCK_H_ |
| #define REMOTING_HOST_DIFFER_BLOCK_H_ |
| |
| #include "base/basictypes.h" |
| |
| namespace remoting { |
| |
| // Size (in pixels) of each square block used for diffing. |
| // This must be a multiple of sizeof(uint64)/8. |
| static const int kBlockSize = 32; |
| |
| // Format: BGRA 32 bit. |
| static const int kBytesPerPixel = 4; |
| |
| // Low level functions to compare 2 blocks of pixels. |
| // zero means the blocks are identical. |
| // one means the blocks are different. |
| int BlockDifference(const uint8* image1, const uint8* image2, int stride); |
| |
| } // namespace remoting |
| |
| #endif // REMOTING_HOST_DIFFER_BLOCK_H_ |
