diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp')
| -rw-r--r-- | core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp | 389 |
1 files changed, 389 insertions, 0 deletions
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp new file mode 100644 index 0000000000..c5be3391b8 --- /dev/null +++ b/core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp @@ -0,0 +1,389 @@ +// 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 "../../../include/fpdfapi/fpdf_render.h"
+#include "../../../include/fpdfapi/fpdf_pageobj.h"
+#include "../../../include/fxge/fx_ge.h"
+#include "../fpdf_page/pageint.h"
+#include "render_int.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;
+ }
+};
+void CPDF_Page::ClearRenderCache()
+{
+ if (m_pPageRender) {
+ m_pPageRender->ClearAll();
+ }
+}
+void CPDF_PageRenderCache::ClearAll()
+{
+ FX_POSITION pos = m_ImageCaches.GetStartPosition();
+ while (pos) {
+ FX_LPVOID key, value;
+ m_ImageCaches.GetNextAssoc(pos, key, value);
+ delete (CPDF_ImageCache*)value;
+ }
+ m_ImageCaches.RemoveAll();
+ m_nCacheSize = 0;
+ m_nTimeCount = 0;
+}
+void CPDF_PageRenderCache::CacheOptimization(FX_INT32 dwLimitCacheSize)
+{
+ if (m_nCacheSize <= (FX_DWORD)dwLimitCacheSize) {
+ return;
+ }
+ int nCount = m_ImageCaches.GetCount();
+ CACHEINFO* pCACHEINFO = (CACHEINFO*)FX_Alloc(FX_BYTE, (sizeof (CACHEINFO)) * nCount);
+ FX_POSITION pos = m_ImageCaches.GetStartPosition();
+ int i = 0;
+ while (pos) {
+ FX_LPVOID key, value;
+ m_ImageCaches.GetNextAssoc(pos, key, value);
+ pCACHEINFO[i].time = ((CPDF_ImageCache*)value)->GetTimeCount();
+ pCACHEINFO[i++].pStream = ((CPDF_ImageCache*)value)->GetStream();
+ }
+ FXSYS_qsort(pCACHEINFO, nCount, sizeof (CACHEINFO), compare);
+ FX_DWORD nTimeCount = m_nTimeCount;
+ if (nTimeCount + 1 < nTimeCount) {
+ for (i = 0; i < nCount; i ++) {
+ ((CPDF_ImageCache*)(m_ImageCaches[pCACHEINFO[i].pStream]))->m_dwTimeCount = i;
+ }
+ m_nTimeCount = nCount;
+ }
+ i = 0;
+ while(nCount > 15) {
+ ClearImageCache(pCACHEINFO[i++].pStream);
+ nCount--;
+ }
+ while (m_nCacheSize > (FX_DWORD)dwLimitCacheSize) {
+ ClearImageCache(pCACHEINFO[i++].pStream);
+ }
+ FX_Free(pCACHEINFO);
+}
+void CPDF_PageRenderCache::ClearImageCache(CPDF_Stream* pStream)
+{
+ FX_LPVOID value = m_ImageCaches.GetValueAt(pStream);
+ if (value == NULL) {
+ m_ImageCaches.RemoveKey(pStream);
+ return;
+ }
+ m_nCacheSize -= ((CPDF_ImageCache*)value)->EstimateSize();
+ delete (CPDF_ImageCache*)value;
+ m_ImageCaches.RemoveKey(pStream);
+}
+FX_DWORD CPDF_PageRenderCache::EstimateSize()
+{
+ FX_DWORD dwSize = 0;
+ FX_POSITION pos = m_ImageCaches.GetStartPosition();
+ while (pos) {
+ FX_LPVOID key, value;
+ m_ImageCaches.GetNextAssoc(pos, key, value);
+ dwSize += ((CPDF_ImageCache*)value)->EstimateSize();
+ }
+ m_nCacheSize = dwSize;
+ return dwSize;
+}
+FX_DWORD CPDF_PageRenderCache::GetCachedSize(CPDF_Stream* pStream) const
+{
+ if (pStream == NULL) {
+ return m_nCacheSize;
+ }
+ CPDF_ImageCache* pImageCache;
+ if (!m_ImageCaches.Lookup(pStream, (FX_LPVOID&)pImageCache)) {
+ return 0;
+ }
+ return pImageCache->EstimateSize();
+}
+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,
+ FX_INT32 downsampleWidth, FX_INT32 downsampleHeight)
+{
+ CPDF_ImageCache* pImageCache;
+ FX_BOOL bFind = m_ImageCaches.Lookup(pStream, (FX_LPVOID&)pImageCache);
+ if (!bFind) {
+ pImageCache = FX_NEW CPDF_ImageCache(m_pPage->m_pDocument, pStream);
+ }
+ m_nTimeCount ++;
+ FX_BOOL bCached = pImageCache->GetCachedBitmap(pBitmap, pMask, MatteColor, m_pPage->m_pPageResources, bStdCS, GroupFamily, bLoadMask, pRenderStatus, downsampleWidth, downsampleHeight);
+ if (!bFind) {
+ m_ImageCaches.SetAt(pStream, pImageCache);
+ }
+ if (!bCached) {
+ m_nCacheSize += pImageCache->EstimateSize();
+ }
+}
+FX_BOOL CPDF_PageRenderCache::StartGetCachedBitmap(CPDF_Stream* pStream, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask, CPDF_RenderStatus* pRenderStatus, FX_INT32 downsampleWidth, FX_INT32 downsampleHeight)
+{
+ m_bCurFindCache = m_ImageCaches.Lookup(pStream, (FX_LPVOID&)m_pCurImageCache);
+ if (!m_bCurFindCache) {
+ m_pCurImageCache = FX_NEW CPDF_ImageCache(m_pPage->m_pDocument, pStream);
+ }
+ int ret = m_pCurImageCache->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_ImageCaches.SetAt(pStream, m_pCurImageCache);
+ }
+ if (!ret) {
+ m_nCacheSize += m_pCurImageCache->EstimateSize();
+ }
+ return FALSE;
+}
+FX_BOOL CPDF_PageRenderCache::Continue(IFX_Pause* pPause)
+{
+ int ret = m_pCurImageCache->Continue(pPause);
+ if (ret == 2) {
+ return TRUE;
+ }
+ m_nTimeCount ++;
+ if (!m_bCurFindCache) {
+ m_ImageCaches.SetAt(m_pCurImageCache->GetStream(), m_pCurImageCache);
+ }
+ if (!ret) {
+ m_nCacheSize += m_pCurImageCache->EstimateSize();
+ }
+ return FALSE;
+}
+void CPDF_PageRenderCache::ResetBitmap(CPDF_Stream* pStream, const CFX_DIBitmap* pBitmap)
+{
+ CPDF_ImageCache* pImageCache;
+ if (!m_ImageCaches.Lookup(pStream, (FX_LPVOID&)pImageCache)) {
+ if (pBitmap == NULL) {
+ return;
+ }
+ pImageCache = FX_NEW CPDF_ImageCache(m_pPage->m_pDocument, pStream);
+ m_ImageCaches.SetAt(pStream, pImageCache);
+ }
+ int oldsize = pImageCache->EstimateSize();
+ pImageCache->Reset(pBitmap);
+ m_nCacheSize = pImageCache->EstimateSize() - oldsize;
+}
+CPDF_ImageCache::CPDF_ImageCache(CPDF_Document* pDoc, CPDF_Stream* pStream)
+ : m_pDocument(pDoc)
+ , m_pStream(pStream)
+ , m_pCachedBitmap(NULL)
+ , m_pCachedMask(NULL)
+ , m_dwCacheSize(0)
+ , m_dwTimeCount(0)
+ , m_pCurBitmap(NULL)
+ , m_pCurMask(NULL)
+ , m_MatteColor(0)
+ , m_pRenderStatus(NULL)
+{
+}
+CPDF_ImageCache::~CPDF_ImageCache()
+{
+ if (m_pCachedBitmap) {
+ delete m_pCachedBitmap;
+ m_pCachedBitmap = NULL;
+ }
+ if (m_pCachedMask) {
+ delete m_pCachedMask;
+ m_pCachedMask = NULL;
+ }
+}
+void CPDF_ImageCache::Reset(const CFX_DIBitmap* pBitmap)
+{
+ if (m_pCachedBitmap) {
+ delete m_pCachedBitmap;
+ }
+ m_pCachedBitmap = NULL;
+ if (pBitmap) {
+ m_pCachedBitmap = pBitmap->Clone();
+ }
+ CalcSize();
+}
+void CPDF_PageRenderCache::ClearImageData()
+{
+ FX_POSITION pos = m_ImageCaches.GetStartPosition();
+ while (pos) {
+ FX_LPVOID key, value;
+ m_ImageCaches.GetNextAssoc(pos, key, value);
+ ((CPDF_ImageCache*)value)->ClearImageData();
+ }
+}
+void CPDF_ImageCache::ClearImageData()
+{
+ if (m_pCachedBitmap && m_pCachedBitmap->GetBuffer() == NULL) {
+ ((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_ImageCache::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,
+ FX_INT32 downsampleWidth, FX_INT32 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->m_pPageCache;
+ m_dwTimeCount = pPageRenderCache->GetTimeCount();
+ CPDF_DIBSource* pSrc = FX_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 !defined(_FPDFAPI_MINI_)
+ 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;
+ }
+#else
+ if (pSrc->GetFormat() == FXDIB_8bppRgb && pSrc->GetPalette() &&
+ pSrc->GetHeight() * pSrc->GetWidth() * 3 < 1024) {
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
+ m_pCachedBitmap = pSrc->CloneConvert(FXDIB_Rgb32);
+#else
+ m_pCachedBitmap = pSrc->CloneConvert(FXDIB_Rgb);
+#endif
+ delete pSrc;
+ } else if (pSrc->GetPitch() * pSrc->GetHeight() < 102400) {
+ m_pCachedBitmap = pSrc->Clone();
+ delete pSrc;
+ } else {
+ m_pCachedBitmap = pSrc;
+ }
+ m_pCachedMask = pMaskSrc;
+#endif
+ pBitmap = m_pCachedBitmap;
+ pMask = m_pCachedMask;
+ CalcSize();
+ return FALSE;
+}
+CFX_DIBSource* CPDF_ImageCache::DetachBitmap()
+{
+ CFX_DIBSource* pDIBSource = m_pCurBitmap;
+ m_pCurBitmap = NULL;
+ return pDIBSource;
+}
+CFX_DIBSource* CPDF_ImageCache::DetachMask()
+{
+ CFX_DIBSource* pDIBSource = m_pCurMask;
+ m_pCurMask = NULL;
+ return pDIBSource;
+}
+int CPDF_ImageCache::StartGetCachedBitmap(CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources, FX_BOOL bStdCS,
+ FX_DWORD GroupFamily, FX_BOOL bLoadMask, CPDF_RenderStatus* pRenderStatus,
+ FX_INT32 downsampleWidth, FX_INT32 downsampleHeight)
+{
+ if (m_pCachedBitmap) {
+ m_pCurBitmap = m_pCachedBitmap;
+ m_pCurMask = m_pCachedMask;
+ return 1;
+ }
+ if (!pRenderStatus) {
+ return 0;
+ }
+ m_pRenderStatus = pRenderStatus;
+ m_pCurBitmap = FX_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;
+}
+int CPDF_ImageCache::ContinueGetCachedBitmap()
+{
+ m_MatteColor = ((CPDF_DIBSource*)m_pCurBitmap)->m_MatteColor;
+ m_pCurMask = ((CPDF_DIBSource*)m_pCurBitmap)->DetachMask();
+ CPDF_RenderContext*pContext = m_pRenderStatus->GetContext();
+ CPDF_PageRenderCache* pPageRenderCache = pContext->m_pPageCache;
+ m_dwTimeCount = pPageRenderCache->GetTimeCount();
+#if !defined(_FPDFAPI_MINI_)
+ 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;
+ }
+#else
+ if (m_pCurBitmap->GetFormat() == FXDIB_8bppRgb && m_pCurBitmap->GetPalette() &&
+ m_pCurBitmap->GetHeight() * m_pCurBitmap->GetWidth() * 3 < 1024) {
+ m_pCachedBitmap = m_pCurBitmap->CloneConvert(FXDIB_Rgb32);
+ m_pCachedBitmap = m_pCurBitmap->CloneConvert(FXDIB_Rgb);
+ delete m_pCurBitmap;
+ m_pCurBitmap = NULL;
+ } else if (m_pCurBitmap->GetPitch() * m_pCurBitmap->GetHeight() < 102400) {
+ m_pCachedBitmap = m_pCurBitmap->Clone();
+ delete m_pCurBitmap;
+ m_pCurBitmap = NULL;
+ } else {
+ m_pCachedBitmap = m_pCurBitmap;
+ }
+ m_pCachedMask = m_pCurMask;
+#endif
+ m_pCurBitmap = m_pCachedBitmap;
+ m_pCurMask = m_pCachedMask;
+ CalcSize();
+ return 0;
+}
+int CPDF_ImageCache::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_ImageCache::CalcSize()
+{
+ m_dwCacheSize = FPDF_ImageCache_EstimateImageSize(m_pCachedBitmap) + FPDF_ImageCache_EstimateImageSize(m_pCachedMask);
+}
+void CPDF_Document::ClearRenderFont()
+{
+ if (m_pDocRender) {
+ CFX_FontCache* pCache = m_pDocRender->GetFontCache();
+ if (pCache) {
+ pCache->FreeCache(FALSE);
+ }
+ }
+}
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