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Diffstat (limited to 'core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp')
-rw-r--r--core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp334
1 files changed, 0 insertions, 334 deletions
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp
deleted file mode 100644
index 9636d1b23a..0000000000
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp
+++ /dev/null
@@ -1,334 +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 "core/src/fpdfapi/fpdf_render/render_int.h"
-
-#include "core/include/fpdfapi/cpdf_document.h"
-#include "core/include/fpdfapi/fpdf_pageobj.h"
-#include "core/include/fpdfapi/fpdf_render.h"
-#include "core/include/fxge/fx_ge.h"
-#include "core/src/fpdfapi/fpdf_page/pageint.h"
-
-struct CACHEINFO {
- FX_DWORD 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() {
- for (const auto& it : m_ImageCache)
- delete it.second;
-}
-void CPDF_PageRenderCache::CacheOptimization(int32_t dwLimitCacheSize) {
- if (m_nCacheSize <= (FX_DWORD)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);
- FX_DWORD nTimeCount = m_nTimeCount;
-
- // Check if time value is about to roll over and reset all entries.
- // The comparision is legal because FX_DWORD 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 > (FX_DWORD)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);
-}
-FX_DWORD CPDF_PageRenderCache::EstimateSize() {
- FX_DWORD 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,
- FX_DWORD& MatteColor,
- FX_BOOL bStdCS,
- FX_DWORD GroupFamily,
- FX_BOOL bLoadMask,
- CPDF_RenderStatus* pRenderStatus,
- int32_t downsampleWidth,
- int32_t downsampleHeight) {
- CPDF_ImageCacheEntry* pEntry;
- const auto it = m_ImageCache.find(pStream);
- FX_BOOL bFound = it != m_ImageCache.end();
- if (bFound)
- pEntry = it->second;
- else
- pEntry = new CPDF_ImageCacheEntry(m_pPage->m_pDocument, pStream);
-
- m_nTimeCount++;
- FX_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();
-}
-FX_BOOL CPDF_PageRenderCache::StartGetCachedBitmap(
- CPDF_Stream* pStream,
- FX_BOOL bStdCS,
- FX_DWORD GroupFamily,
- FX_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;
-}
-FX_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(NULL),
- m_pCurMask(NULL),
- m_MatteColor(0),
- m_pRenderStatus(NULL),
- m_pDocument(pDoc),
- m_pStream(pStream),
- m_pCachedBitmap(NULL),
- m_pCachedMask(NULL),
- m_dwCacheSize(0) {}
-CPDF_ImageCacheEntry::~CPDF_ImageCacheEntry() {
- delete m_pCachedBitmap;
- delete m_pCachedMask;
-}
-void CPDF_ImageCacheEntry::Reset(const CFX_DIBitmap* pBitmap) {
- delete m_pCachedBitmap;
- m_pCachedBitmap = NULL;
- if (pBitmap) {
- m_pCachedBitmap = pBitmap->Clone();
- }
- CalcSize();
-}
-void CPDF_PageRenderCache::ClearImageData() {
- for (const auto& it : m_ImageCache)
- it.second->ClearImageData();
-}
-void CPDF_ImageCacheEntry::ClearImageData() {
- if (m_pCachedBitmap && !m_pCachedBitmap->GetBuffer()) {
- ((CPDF_DIBSource*)m_pCachedBitmap)->ClearImageData();
- }
-}
-static FX_DWORD FPDF_ImageCache_EstimateImageSize(const CFX_DIBSource* pDIB) {
- return pDIB && pDIB->GetBuffer()
- ? (FX_DWORD)pDIB->GetHeight() * pDIB->GetPitch() +
- (FX_DWORD)pDIB->GetPaletteSize() * 4
- : 0;
-}
-FX_BOOL CPDF_ImageCacheEntry::GetCachedBitmap(CFX_DIBSource*& pBitmap,
- CFX_DIBSource*& pMask,
- FX_DWORD& MatteColor,
- CPDF_Dictionary* pPageResources,
- FX_BOOL bStdCS,
- FX_DWORD GroupFamily,
- FX_BOOL bLoadMask,
- CPDF_RenderStatus* pRenderStatus,
- int32_t downsampleWidth,
- int32_t downsampleHeight) {
- if (m_pCachedBitmap) {
- pBitmap = m_pCachedBitmap;
- pMask = m_pCachedMask;
- MatteColor = m_MatteColor;
- return TRUE;
- }
- if (!pRenderStatus) {
- return FALSE;
- }
- CPDF_RenderContext* pContext = pRenderStatus->GetContext();
- CPDF_PageRenderCache* pPageRenderCache = pContext->GetPageCache();
- m_dwTimeCount = pPageRenderCache->GetTimeCount();
- CPDF_DIBSource* pSrc = new CPDF_DIBSource;
- CPDF_DIBSource* pMaskSrc = NULL;
- if (!pSrc->Load(m_pDocument, m_pStream, &pMaskSrc, &MatteColor,
- pRenderStatus->m_pFormResource, pPageResources, bStdCS,
- GroupFamily, bLoadMask)) {
- delete pSrc;
- pBitmap = NULL;
- return FALSE;
- }
- m_MatteColor = MatteColor;
- if (pSrc->GetPitch() * pSrc->GetHeight() < FPDF_HUGE_IMAGE_SIZE) {
- m_pCachedBitmap = pSrc->Clone();
- delete pSrc;
- } else {
- m_pCachedBitmap = pSrc;
- }
- if (pMaskSrc) {
- m_pCachedMask = pMaskSrc->Clone();
- delete pMaskSrc;
- }
-
- pBitmap = m_pCachedBitmap;
- pMask = m_pCachedMask;
- CalcSize();
- return FALSE;
-}
-CFX_DIBSource* CPDF_ImageCacheEntry::DetachBitmap() {
- CFX_DIBSource* pDIBSource = m_pCurBitmap;
- m_pCurBitmap = NULL;
- return pDIBSource;
-}
-CFX_DIBSource* CPDF_ImageCacheEntry::DetachMask() {
- CFX_DIBSource* pDIBSource = m_pCurMask;
- m_pCurMask = NULL;
- return pDIBSource;
-}
-int CPDF_ImageCacheEntry::StartGetCachedBitmap(CPDF_Dictionary* pFormResources,
- CPDF_Dictionary* pPageResources,
- FX_BOOL bStdCS,
- FX_DWORD GroupFamily,
- FX_BOOL bLoadMask,
- CPDF_RenderStatus* pRenderStatus,
- int32_t downsampleWidth,
- int32_t downsampleHeight) {
- if (m_pCachedBitmap) {
- m_pCurBitmap = m_pCachedBitmap;
- m_pCurMask = m_pCachedMask;
- 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 = NULL;
- 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();
- if (m_pCurBitmap->GetPitch() * m_pCurBitmap->GetHeight() <
- FPDF_HUGE_IMAGE_SIZE) {
- m_pCachedBitmap = m_pCurBitmap->Clone();
- delete m_pCurBitmap;
- m_pCurBitmap = NULL;
- } else {
- m_pCachedBitmap = m_pCurBitmap;
- }
- if (m_pCurMask) {
- m_pCachedMask = m_pCurMask->Clone();
- delete m_pCurMask;
- m_pCurMask = NULL;
- }
- m_pCurBitmap = m_pCachedBitmap;
- m_pCurMask = m_pCachedMask;
- 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 = NULL;
- return 0;
- }
- ContinueGetCachedBitmap();
- return 0;
-}
-void CPDF_ImageCacheEntry::CalcSize() {
- m_dwCacheSize = FPDF_ImageCache_EstimateImageSize(m_pCachedBitmap) +
- FPDF_ImageCache_EstimateImageSize(m_pCachedMask);
-}
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