// Copyright (c) 2010 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 {

// Block size and format (BGRA 32 bit) are fixed.
static const int kBlockWidth = 32;
static const int kBlockHeight = 32;
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_