blob: b5155c2012bbfcc9e86477c833f4a94a320740ab [file] [log] [blame]
// Copyright 2016 The PDFium Authors
// 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/page/cpdf_imageloader.h"
#include <utility>
#include "core/fpdfapi/page/cpdf_dib.h"
#include "core/fpdfapi/page/cpdf_image.h"
#include "core/fpdfapi/page/cpdf_imageobject.h"
#include "core/fpdfapi/page/cpdf_pageimagecache.h"
#include "core/fpdfapi/page/cpdf_transferfunc.h"
#include "core/fxcrt/check.h"
#include "core/fxge/dib/cfx_dibitmap.h"
CPDF_ImageLoader::CPDF_ImageLoader() = default;
CPDF_ImageLoader::~CPDF_ImageLoader() = default;
bool CPDF_ImageLoader::Start(const CPDF_ImageObject* pImage,
CPDF_PageImageCache* pPageImageCache,
const CPDF_Dictionary* pFormResource,
const CPDF_Dictionary* pPageResource,
bool bStdCS,
CPDF_ColorSpace::Family eFamily,
bool bLoadMask,
const CFX_Size& max_size_required) {
m_pCache = pPageImageCache;
m_pImageObject = pImage;
bool should_continue;
if (m_pCache) {
should_continue = m_pCache->StartGetCachedBitmap(
m_pImageObject->GetImage(), pFormResource, pPageResource, bStdCS,
eFamily, bLoadMask, max_size_required);
} else {
should_continue = m_pImageObject->GetImage()->StartLoadDIBBase(
pFormResource, pPageResource, bStdCS, eFamily, bLoadMask,
max_size_required);
}
if (!should_continue) {
Finish();
}
return should_continue;
}
bool CPDF_ImageLoader::Continue(PauseIndicatorIface* pPause) {
bool should_continue = m_pCache
? m_pCache->Continue(pPause)
: m_pImageObject->GetImage()->Continue(pPause);
if (!should_continue) {
Finish();
}
return should_continue;
}
RetainPtr<CFX_DIBBase> CPDF_ImageLoader::TranslateImage(
RetainPtr<CPDF_TransferFunc> pTransferFunc) {
DCHECK(pTransferFunc);
DCHECK(!pTransferFunc->GetIdentity());
m_pBitmap = pTransferFunc->TranslateImage(std::move(m_pBitmap));
if (m_bCached && m_pMask)
m_pMask = m_pMask->Realize();
m_bCached = false;
return m_pBitmap;
}
void CPDF_ImageLoader::Finish() {
if (m_pCache) {
m_bCached = true;
m_pBitmap = m_pCache->DetachCurBitmap();
m_pMask = m_pCache->DetachCurMask();
m_MatteColor = m_pCache->GetCurMatteColor();
return;
}
RetainPtr<CPDF_Image> pImage = m_pImageObject->GetImage();
m_bCached = false;
m_pBitmap = pImage->DetachBitmap();
m_pMask = pImage->DetachMask();
m_MatteColor = pImage->GetMatteColor();
}