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// 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_dibbase.h"
#include "core/fpdfapi/render/cpdf_imagecacheentry.h"
#include "core/fpdfapi/render/cpdf_pagerendercache.h"
#include "core/fpdfapi/render/cpdf_renderstatus.h"
#include "core/fpdfapi/render/cpdf_transferfunc.h"
#include "core/fxge/dib/cfx_dibitmap.h"
CPDF_ImageLoader::CPDF_ImageLoader() = default;
CPDF_ImageLoader::~CPDF_ImageLoader() = default;
bool CPDF_ImageLoader::Start(CPDF_ImageObject* pImage,
CPDF_PageRenderCache* pCache,
bool bStdCS,
uint32_t GroupFamily,
bool bLoadMask,
CPDF_RenderStatus* pRenderStatus) {
m_pCache = pCache;
m_pImageObject = pImage;
bool ret;
if (pCache) {
ret = pCache->StartGetCachedBitmap(m_pImageObject->GetImage(), bStdCS,
GroupFamily, bLoadMask, pRenderStatus);
} else {
ret = m_pImageObject->GetImage()->StartLoadDIBBase(
pRenderStatus->GetFormResource(), pRenderStatus->GetPageResource(),
bStdCS, GroupFamily, bLoadMask);
}
if (!ret)
HandleFailure();
return ret;
}
bool CPDF_ImageLoader::Continue(PauseIndicatorIface* pPause,
CPDF_RenderStatus* pRenderStatus) {
bool ret = m_pCache ? m_pCache->Continue(pPause, pRenderStatus)
: m_pImageObject->GetImage()->Continue(pPause);
if (!ret)
HandleFailure();
return ret;
}
RetainPtr<CFX_DIBBase> CPDF_ImageLoader::TranslateImage(
const RetainPtr<CPDF_TransferFunc>& pTransferFunc) {
ASSERT(pTransferFunc);
ASSERT(!pTransferFunc->GetIdentity());
m_pBitmap = pTransferFunc->TranslateImage(m_pBitmap);
if (m_bCached && m_pMask)
m_pMask = m_pMask->Clone(nullptr);
m_bCached = false;
return m_pBitmap;
}
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;
}
RetainPtr<CPDF_Image> pImage = m_pImageObject->GetImage();
m_bCached = false;
m_pBitmap = pImage->DetachBitmap();
m_pMask = pImage->DetachMask();
m_MatteColor = pImage->m_MatteColor;
}
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