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 VerifyCanvasSize(int w,int h)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