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-rw-r--r--vcl/headless/svpbmp.cxx271
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diff --git a/vcl/headless/svpbmp.cxx b/vcl/headless/svpbmp.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+#include <sal/log.hxx>
+
+#include <cstring>
+
+#include <headless/svpbmp.hxx>
+#include <headless/svpgdi.hxx>
+#include <headless/svpinst.hxx>
+
+#include <basegfx/vector/b2ivector.hxx>
+#include <basegfx/range/b2ibox.hxx>
+#include <o3tl/safeint.hxx>
+#include <tools/helpers.hxx>
+#include <vcl/bitmap.hxx>
+
+using namespace basegfx;
+
+SvpSalBitmap::SvpSalBitmap()
+{
+}
+
+SvpSalBitmap::~SvpSalBitmap()
+{
+ Destroy();
+}
+
+static std::unique_ptr<BitmapBuffer> ImplCreateDIB(
+ const Size& rSize,
+ vcl::PixelFormat ePixelFormat,
+ const BitmapPalette& rPal)
+{
+ if (!rSize.Width() || !rSize.Height())
+ return nullptr;
+
+ std::unique_ptr<BitmapBuffer> pDIB;
+
+ try
+ {
+ pDIB.reset(new BitmapBuffer);
+ }
+ catch (const std::bad_alloc&)
+ {
+ return nullptr;
+ }
+
+ switch (ePixelFormat)
+ {
+ case vcl::PixelFormat::N1_BPP:
+ pDIB->mnFormat = ScanlineFormat::N1BitLsbPal;
+ break;
+ case vcl::PixelFormat::N8_BPP:
+ pDIB->mnFormat = ScanlineFormat::N8BitPal;
+ break;
+ case vcl::PixelFormat::N24_BPP:
+ pDIB->mnFormat = SVP_24BIT_FORMAT;
+ break;
+ case vcl::PixelFormat::N32_BPP:
+ pDIB->mnFormat = SVP_CAIRO_FORMAT;
+ break;
+ case vcl::PixelFormat::INVALID:
+ assert(false);
+ pDIB->mnFormat = SVP_CAIRO_FORMAT;
+ break;
+ }
+
+ sal_uInt16 nColors = 0;
+ if (ePixelFormat <= vcl::PixelFormat::N8_BPP)
+ nColors = vcl::numberOfColors(ePixelFormat);
+
+ pDIB->mnFormat |= ScanlineFormat::TopDown;
+ pDIB->mnWidth = rSize.Width();
+ pDIB->mnHeight = rSize.Height();
+ tools::Long nScanlineBase;
+ bool bFail = o3tl::checked_multiply<tools::Long>(pDIB->mnWidth, vcl::pixelFormatBitCount(ePixelFormat), nScanlineBase);
+ if (bFail)
+ {
+ SAL_WARN("vcl.gdi", "checked multiply failed");
+ return nullptr;
+ }
+ pDIB->mnScanlineSize = AlignedWidth4Bytes(nScanlineBase);
+ if (pDIB->mnScanlineSize < nScanlineBase/8)
+ {
+ SAL_WARN("vcl.gdi", "scanline calculation wraparound");
+ return nullptr;
+ }
+ pDIB->mnBitCount = vcl::pixelFormatBitCount(ePixelFormat);
+
+ if (nColors)
+ {
+ pDIB->maPalette = rPal;
+ pDIB->maPalette.SetEntryCount( nColors );
+ }
+
+ size_t size;
+ bFail = o3tl::checked_multiply<size_t>(pDIB->mnHeight, pDIB->mnScanlineSize, size);
+ SAL_WARN_IF(bFail, "vcl.gdi", "checked multiply failed");
+ if (bFail || size > SAL_MAX_INT32/2)
+ {
+ return nullptr;
+ }
+
+ try
+ {
+ pDIB->mpBits = new sal_uInt8[size];
+#ifdef __SANITIZE_ADDRESS__
+ if (!pDIB->mpBits)
+ { // can only happen with ASAN allocator_may_return_null=1
+ pDIB.reset();
+ }
+ else
+#endif
+ {
+ std::memset(pDIB->mpBits, 0, size);
+ }
+ }
+ catch (const std::bad_alloc&)
+ {
+ pDIB.reset();
+ }
+
+ return pDIB;
+}
+
+void SvpSalBitmap::Create(std::unique_ptr<BitmapBuffer> pBuf)
+{
+ Destroy();
+ mpDIB = std::move(pBuf);
+}
+
+bool SvpSalBitmap::Create(const Size& rSize, vcl::PixelFormat ePixelFormat, const BitmapPalette& rPal)
+{
+ Destroy();
+ mpDIB = ImplCreateDIB(rSize, ePixelFormat, rPal);
+ return mpDIB != nullptr;
+}
+
+bool SvpSalBitmap::Create(const SalBitmap& rBmp)
+{
+ Destroy();
+
+ const SvpSalBitmap& rSalBmp = static_cast<const SvpSalBitmap&>(rBmp);
+
+ if (rSalBmp.mpDIB)
+ {
+ // TODO: reference counting...
+ mpDIB.reset(new BitmapBuffer( *rSalBmp.mpDIB ));
+
+ const size_t size = mpDIB->mnScanlineSize * mpDIB->mnHeight;
+ if (size > SAL_MAX_INT32/2)
+ {
+ mpDIB.reset();
+ return false;
+ }
+
+ // TODO: get rid of this when BitmapBuffer gets copy constructor
+ try
+ {
+ mpDIB->mpBits = new sal_uInt8[size];
+ std::memcpy(mpDIB->mpBits, rSalBmp.mpDIB->mpBits, size);
+ }
+ catch (const std::bad_alloc&)
+ {
+ mpDIB.reset();
+ }
+ }
+
+ return !rSalBmp.mpDIB || (mpDIB != nullptr);
+}
+
+bool SvpSalBitmap::Create( const SalBitmap& /*rSalBmp*/,
+ SalGraphics* /*pGraphics*/ )
+{
+ return false;
+}
+
+bool SvpSalBitmap::Create(const SalBitmap& /*rSalBmp*/,
+ vcl::PixelFormat /*eNewPixelFormat*/)
+{
+ return false;
+}
+
+bool SvpSalBitmap::Create( const css::uno::Reference< css::rendering::XBitmapCanvas >& /*xBitmapCanvas*/, Size& /*rSize*/, bool /*bMask*/ )
+{
+ return false;
+}
+
+void SvpSalBitmap::Destroy()
+{
+ if (mpDIB)
+ {
+ delete[] mpDIB->mpBits;
+ mpDIB.reset();
+ }
+}
+
+Size SvpSalBitmap::GetSize() const
+{
+ Size aSize;
+
+ if (mpDIB)
+ {
+ aSize.setWidth( mpDIB->mnWidth );
+ aSize.setHeight( mpDIB->mnHeight );
+ }
+
+ return aSize;
+}
+
+sal_uInt16 SvpSalBitmap::GetBitCount() const
+{
+ sal_uInt16 nBitCount;
+
+ if (mpDIB)
+ nBitCount = mpDIB->mnBitCount;
+ else
+ nBitCount = 0;
+
+ return nBitCount;
+}
+
+BitmapBuffer* SvpSalBitmap::AcquireBuffer(BitmapAccessMode)
+{
+ return mpDIB.get();
+}
+
+void SvpSalBitmap::ReleaseBuffer(BitmapBuffer*, BitmapAccessMode nMode)
+{
+ if( nMode == BitmapAccessMode::Write )
+ InvalidateChecksum();
+}
+
+bool SvpSalBitmap::GetSystemData( BitmapSystemData& )
+{
+ return false;
+}
+
+bool SvpSalBitmap::ScalingSupported() const
+{
+ return false;
+}
+
+bool SvpSalBitmap::Scale( const double& /*rScaleX*/, const double& /*rScaleY*/, BmpScaleFlag /*nScaleFlag*/ )
+{
+ return false;
+}
+
+bool SvpSalBitmap::Replace( const ::Color& /*rSearchColor*/, const ::Color& /*rReplaceColor*/, sal_uInt8 /*nTol*/ )
+{
+ return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */