1// Copyright (c) 2013 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#include "ui/surface/transport_dib.h"
6
7#include "skia/ext/platform_canvas.h"
8
9// static
10bool TransportDIB::VerifyCanvasSize(int w, int h) {
11  static const size_t kMaxSize = static_cast<size_t>(INT_MAX);
12  const size_t one_stride = skia::PlatformCanvasStrideForWidth(1);
13  const size_t stride = skia::PlatformCanvasStrideForWidth(w);
14  if (w <= 0 || h <= 0 || static_cast<size_t>(w) > (kMaxSize / one_stride) ||
15      static_cast<size_t>(h) > (kMaxSize / stride)) {
16    return false;
17  }
18
19  return (stride * h) <= size_;
20}
21
22