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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_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;
}
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