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Unified Diff: core/fpdfapi/render/fpdf_render_cache.cpp

Issue 2550543002: Kill off fpdf_render_cache.cpp (Closed)
Patch Set: Rebase Created 4 years ago
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Index: core/fpdfapi/render/fpdf_render_cache.cpp
diff --git a/core/fpdfapi/render/fpdf_render_cache.cpp b/core/fpdfapi/render/fpdf_render_cache.cpp
deleted file mode 100644
index d30de00edb7710667e668c92cab2ac9b4f0f5ddd..0000000000000000000000000000000000000000
--- a/core/fpdfapi/render/fpdf_render_cache.cpp
+++ /dev/null
@@ -1,316 +0,0 @@
-// Copyright 2014 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 <memory>
-#include <utility>
-
-#include "core/fpdfapi/page/cpdf_page.h"
-#include "core/fpdfapi/page/pageint.h"
-#include "core/fpdfapi/parser/cpdf_document.h"
-#include "core/fpdfapi/render/cpdf_pagerendercache.h"
-#include "core/fpdfapi/render/cpdf_rendercontext.h"
-#include "core/fpdfapi/render/cpdf_renderstatus.h"
-#include "core/fpdfapi/render/render_int.h"
-
-struct CACHEINFO {
- uint32_t time;
- CPDF_Stream* pStream;
-};
-
-extern "C" {
-static int compare(const void* data1, const void* data2) {
- return ((CACHEINFO*)data1)->time - ((CACHEINFO*)data2)->time;
-}
-} // extern "C"
-
-CPDF_PageRenderCache::CPDF_PageRenderCache(CPDF_Page* pPage)
- : m_pPage(pPage),
- m_pCurImageCacheEntry(nullptr),
- m_nTimeCount(0),
- m_nCacheSize(0),
- m_bCurFindCache(false) {}
-
-CPDF_PageRenderCache::~CPDF_PageRenderCache() {
- for (const auto& it : m_ImageCache)
- delete it.second;
-}
-void CPDF_PageRenderCache::CacheOptimization(int32_t dwLimitCacheSize) {
- if (m_nCacheSize <= (uint32_t)dwLimitCacheSize)
- return;
-
- size_t nCount = m_ImageCache.size();
- CACHEINFO* pCACHEINFO = FX_Alloc(CACHEINFO, nCount);
- size_t i = 0;
- for (const auto& it : m_ImageCache) {
- pCACHEINFO[i].time = it.second->GetTimeCount();
- pCACHEINFO[i++].pStream = it.second->GetStream();
- }
- FXSYS_qsort(pCACHEINFO, nCount, sizeof(CACHEINFO), compare);
- uint32_t nTimeCount = m_nTimeCount;
-
- // Check if time value is about to roll over and reset all entries.
- // The comparision is legal because uint32_t is an unsigned type.
- if (nTimeCount + 1 < nTimeCount) {
- for (i = 0; i < nCount; i++)
- m_ImageCache[pCACHEINFO[i].pStream]->m_dwTimeCount = i;
- m_nTimeCount = nCount;
- }
-
- i = 0;
- while (i + 15 < nCount)
- ClearImageCacheEntry(pCACHEINFO[i++].pStream);
-
- while (i < nCount && m_nCacheSize > (uint32_t)dwLimitCacheSize)
- ClearImageCacheEntry(pCACHEINFO[i++].pStream);
-
- FX_Free(pCACHEINFO);
-}
-void CPDF_PageRenderCache::ClearImageCacheEntry(CPDF_Stream* pStream) {
- auto it = m_ImageCache.find(pStream);
- if (it == m_ImageCache.end())
- return;
-
- m_nCacheSize -= it->second->EstimateSize();
- delete it->second;
- m_ImageCache.erase(it);
-}
-uint32_t CPDF_PageRenderCache::EstimateSize() {
- uint32_t dwSize = 0;
- for (const auto& it : m_ImageCache)
- dwSize += it.second->EstimateSize();
-
- m_nCacheSize = dwSize;
- return dwSize;
-}
-void CPDF_PageRenderCache::GetCachedBitmap(CPDF_Stream* pStream,
- CFX_DIBSource*& pBitmap,
- CFX_DIBSource*& pMask,
- uint32_t& MatteColor,
- bool bStdCS,
- uint32_t GroupFamily,
- bool bLoadMask,
- CPDF_RenderStatus* pRenderStatus,
- int32_t downsampleWidth,
- int32_t downsampleHeight) {
- CPDF_ImageCacheEntry* pEntry;
- const auto it = m_ImageCache.find(pStream);
- bool bFound = it != m_ImageCache.end();
- if (bFound)
- pEntry = it->second;
- else
- pEntry = new CPDF_ImageCacheEntry(m_pPage->m_pDocument, pStream);
-
- m_nTimeCount++;
- bool bAlreadyCached = pEntry->GetCachedBitmap(
- pBitmap, pMask, MatteColor, m_pPage->m_pPageResources, bStdCS,
- GroupFamily, bLoadMask, pRenderStatus, downsampleWidth, downsampleHeight);
-
- if (!bFound)
- m_ImageCache[pStream] = pEntry;
-
- if (!bAlreadyCached)
- m_nCacheSize += pEntry->EstimateSize();
-}
-bool CPDF_PageRenderCache::StartGetCachedBitmap(
- CPDF_Stream* pStream,
- bool bStdCS,
- uint32_t GroupFamily,
- bool bLoadMask,
- CPDF_RenderStatus* pRenderStatus,
- int32_t downsampleWidth,
- int32_t downsampleHeight) {
- const auto it = m_ImageCache.find(pStream);
- m_bCurFindCache = it != m_ImageCache.end();
- if (m_bCurFindCache) {
- m_pCurImageCacheEntry = it->second;
- } else {
- m_pCurImageCacheEntry =
- new CPDF_ImageCacheEntry(m_pPage->m_pDocument, pStream);
- }
- int ret = m_pCurImageCacheEntry->StartGetCachedBitmap(
- pRenderStatus->m_pFormResource, m_pPage->m_pPageResources, bStdCS,
- GroupFamily, bLoadMask, pRenderStatus, downsampleWidth, downsampleHeight);
- if (ret == 2)
- return true;
-
- m_nTimeCount++;
- if (!m_bCurFindCache)
- m_ImageCache[pStream] = m_pCurImageCacheEntry;
-
- if (!ret)
- m_nCacheSize += m_pCurImageCacheEntry->EstimateSize();
-
- return false;
-}
-bool CPDF_PageRenderCache::Continue(IFX_Pause* pPause) {
- int ret = m_pCurImageCacheEntry->Continue(pPause);
- if (ret == 2)
- return true;
- m_nTimeCount++;
- if (!m_bCurFindCache)
- m_ImageCache[m_pCurImageCacheEntry->GetStream()] = m_pCurImageCacheEntry;
- if (!ret)
- m_nCacheSize += m_pCurImageCacheEntry->EstimateSize();
- return false;
-}
-void CPDF_PageRenderCache::ResetBitmap(CPDF_Stream* pStream,
- const CFX_DIBitmap* pBitmap) {
- CPDF_ImageCacheEntry* pEntry;
- const auto it = m_ImageCache.find(pStream);
- if (it == m_ImageCache.end()) {
- if (!pBitmap)
- return;
- pEntry = new CPDF_ImageCacheEntry(m_pPage->m_pDocument, pStream);
- m_ImageCache[pStream] = pEntry;
- } else {
- pEntry = it->second;
- }
- m_nCacheSize -= pEntry->EstimateSize();
- pEntry->Reset(pBitmap);
- m_nCacheSize += pEntry->EstimateSize();
-}
-CPDF_ImageCacheEntry::CPDF_ImageCacheEntry(CPDF_Document* pDoc,
- CPDF_Stream* pStream)
- : m_dwTimeCount(0),
- m_pCurBitmap(nullptr),
- m_pCurMask(nullptr),
- m_MatteColor(0),
- m_pRenderStatus(nullptr),
- m_pDocument(pDoc),
- m_pStream(pStream),
- m_dwCacheSize(0) {}
-
-CPDF_ImageCacheEntry::~CPDF_ImageCacheEntry() {}
-
-void CPDF_ImageCacheEntry::Reset(const CFX_DIBitmap* pBitmap) {
- m_pCachedBitmap.reset();
- if (pBitmap)
- m_pCachedBitmap = pdfium::WrapUnique<CFX_DIBSource>(pBitmap->Clone());
- CalcSize();
-}
-
-static uint32_t FPDF_ImageCache_EstimateImageSize(const CFX_DIBSource* pDIB) {
- return pDIB && pDIB->GetBuffer()
- ? (uint32_t)pDIB->GetHeight() * pDIB->GetPitch() +
- (uint32_t)pDIB->GetPaletteSize() * 4
- : 0;
-}
-bool CPDF_ImageCacheEntry::GetCachedBitmap(CFX_DIBSource*& pBitmap,
- CFX_DIBSource*& pMask,
- uint32_t& MatteColor,
- CPDF_Dictionary* pPageResources,
- bool bStdCS,
- uint32_t GroupFamily,
- bool bLoadMask,
- CPDF_RenderStatus* pRenderStatus,
- int32_t downsampleWidth,
- int32_t downsampleHeight) {
- if (m_pCachedBitmap) {
- pBitmap = m_pCachedBitmap.get();
- pMask = m_pCachedMask.get();
- MatteColor = m_MatteColor;
- return true;
- }
- if (!pRenderStatus) {
- return false;
- }
- CPDF_RenderContext* pContext = pRenderStatus->GetContext();
- CPDF_PageRenderCache* pPageRenderCache = pContext->GetPageCache();
- m_dwTimeCount = pPageRenderCache->GetTimeCount();
- std::unique_ptr<CPDF_DIBSource> pSrc = pdfium::MakeUnique<CPDF_DIBSource>();
- CPDF_DIBSource* pMaskSrc = nullptr;
- if (!pSrc->Load(m_pDocument, m_pStream, &pMaskSrc, &MatteColor,
- pRenderStatus->m_pFormResource, pPageResources, bStdCS,
- GroupFamily, bLoadMask)) {
- pBitmap = nullptr;
- return false;
- }
- m_MatteColor = MatteColor;
- m_pCachedBitmap = std::move(pSrc);
- if (pMaskSrc)
- m_pCachedMask = pdfium::WrapUnique<CFX_DIBSource>(pMaskSrc);
-
- pBitmap = m_pCachedBitmap.get();
- pMask = m_pCachedMask.get();
- CalcSize();
- return false;
-}
-
-CFX_DIBSource* CPDF_ImageCacheEntry::DetachBitmap() {
- CFX_DIBSource* pDIBSource = m_pCurBitmap;
- m_pCurBitmap = nullptr;
- return pDIBSource;
-}
-CFX_DIBSource* CPDF_ImageCacheEntry::DetachMask() {
- CFX_DIBSource* pDIBSource = m_pCurMask;
- m_pCurMask = nullptr;
- return pDIBSource;
-}
-int CPDF_ImageCacheEntry::StartGetCachedBitmap(CPDF_Dictionary* pFormResources,
- CPDF_Dictionary* pPageResources,
- bool bStdCS,
- uint32_t GroupFamily,
- bool bLoadMask,
- CPDF_RenderStatus* pRenderStatus,
- int32_t downsampleWidth,
- int32_t downsampleHeight) {
- if (m_pCachedBitmap) {
- m_pCurBitmap = m_pCachedBitmap.get();
- m_pCurMask = m_pCachedMask.get();
- return 1;
- }
- if (!pRenderStatus)
- return 0;
-
- m_pRenderStatus = pRenderStatus;
- m_pCurBitmap = new CPDF_DIBSource;
- int ret =
- ((CPDF_DIBSource*)m_pCurBitmap)
- ->StartLoadDIBSource(m_pDocument, m_pStream, true, pFormResources,
- pPageResources, bStdCS, GroupFamily, bLoadMask);
- if (ret == 2)
- return ret;
-
- if (!ret) {
- delete m_pCurBitmap;
- m_pCurBitmap = nullptr;
- return 0;
- }
- ContinueGetCachedBitmap();
- return 0;
-}
-
-void CPDF_ImageCacheEntry::ContinueGetCachedBitmap() {
- m_MatteColor = ((CPDF_DIBSource*)m_pCurBitmap)->GetMatteColor();
- m_pCurMask = ((CPDF_DIBSource*)m_pCurBitmap)->DetachMask();
- CPDF_RenderContext* pContext = m_pRenderStatus->GetContext();
- CPDF_PageRenderCache* pPageRenderCache = pContext->GetPageCache();
- m_dwTimeCount = pPageRenderCache->GetTimeCount();
- m_pCachedBitmap = pdfium::WrapUnique<CFX_DIBSource>(m_pCurBitmap);
- if (m_pCurMask)
- m_pCachedMask = pdfium::WrapUnique<CFX_DIBSource>(m_pCurMask);
- else
- m_pCurMask = m_pCachedMask.get();
- CalcSize();
-}
-
-int CPDF_ImageCacheEntry::Continue(IFX_Pause* pPause) {
- int ret = ((CPDF_DIBSource*)m_pCurBitmap)->ContinueLoadDIBSource(pPause);
- if (ret == 2) {
- return ret;
- }
- if (!ret) {
- delete m_pCurBitmap;
- m_pCurBitmap = nullptr;
- return 0;
- }
- ContinueGetCachedBitmap();
- return 0;
-}
-void CPDF_ImageCacheEntry::CalcSize() {
- m_dwCacheSize = FPDF_ImageCache_EstimateImageSize(m_pCachedBitmap.get()) +
- FPDF_ImageCache_EstimateImageSize(m_pCachedMask.get());
-}
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