32 lines
1.0 KiB
C
32 lines
1.0 KiB
C
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/*
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* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_DIFFER_BLOCK_H_
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#define WEBRTC_MODULES_DESKTOP_CAPTURE_DIFFER_BLOCK_H_
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#include "webrtc/typedefs.h"
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namespace webrtc {
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// Size (in pixels) of each square block used for diffing. This must be a
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// multiple of sizeof(uint64)/8.
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const int kBlockSize = 32;
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// Format: BGRA 32 bit.
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const int kBytesPerPixel = 4;
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// Low level functions to compare 2 blocks of pixels. Zero means the blocks
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// are identical. One - the blocks are different.
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int BlockDifference(const uint8_t* image1, const uint8_t* image2, int stride);
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} // namespace webrtc
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#endif // WEBRTC_MODULES_DESKTOP_CAPTURE_DIFFER_BLOCK_H_
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