// Copyright 2016 PDFium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com #include "core/fpdfapi/render/cpdf_imageloader.h" #include "core/fpdfapi/page/cpdf_image.h" #include "core/fpdfapi/page/cpdf_imageobject.h" #include "core/fpdfapi/render/cpdf_dibsource.h" #include "core/fpdfapi/render/cpdf_imagecacheentry.h" #include "core/fpdfapi/render/cpdf_pagerendercache.h" #include "core/fpdfapi/render/cpdf_renderstatus.h" #include "core/fxcrt/fx_basic.h" CPDF_ImageLoader::CPDF_ImageLoader() : m_MatteColor(0), m_bCached(false), m_nDownsampleWidth(0), m_nDownsampleHeight(0), m_pCache(nullptr), m_pImage(nullptr) {} CPDF_ImageLoader::~CPDF_ImageLoader() {} bool CPDF_ImageLoader::Start(const CPDF_ImageObject* pImage, CPDF_PageRenderCache* pCache, bool bStdCS, uint32_t GroupFamily, bool bLoadMask, CPDF_RenderStatus* pRenderStatus, int32_t nDownsampleWidth, int32_t nDownsampleHeight) { m_nDownsampleWidth = nDownsampleWidth; m_nDownsampleHeight = nDownsampleHeight; m_pCache = pCache; m_pImage = const_cast<CPDF_ImageObject*>(pImage); bool ret; if (pCache) { ret = pCache->StartGetCachedBitmap( m_pImage->GetImage()->GetStream(), bStdCS, GroupFamily, bLoadMask, pRenderStatus, m_nDownsampleWidth, m_nDownsampleHeight); } else { ret = m_pImage->GetImage()->StartLoadDIBSource( pRenderStatus->m_pFormResource, pRenderStatus->m_pPageResource, bStdCS, GroupFamily, bLoadMask); } if (!ret) HandleFailure(); return ret; } bool CPDF_ImageLoader::Continue(IFX_Pause* pPause) { bool ret = m_pCache ? m_pCache->Continue(pPause) : m_pImage->GetImage()->Continue(pPause); if (!ret) HandleFailure(); return ret; } void CPDF_ImageLoader::HandleFailure() { if (m_pCache) { CPDF_ImageCacheEntry* entry = m_pCache->GetCurImageCacheEntry(); m_bCached = true; m_pBitmap = entry->DetachBitmap(); m_pMask = entry->DetachMask(); m_MatteColor = entry->m_MatteColor; return; } CFX_RetainPtr<CPDF_Image> pImage = m_pImage->GetImage(); m_bCached = false; m_pBitmap = pImage->DetachBitmap(); m_pMask = pImage->DetachMask(); m_MatteColor = pImage->m_MatteColor; }