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// 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 "public/fpdf_edit.h"
#include "core/fpdfapi/cpdf_modulemgr.h"
#include "core/fpdfapi/page/cpdf_image.h"
#include "core/fpdfapi/page/cpdf_imageobject.h"
#include "core/fpdfapi/page/cpdf_pageobject.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_name.h"
#include "fpdfsdk/fsdk_define.h"
#include "third_party/base/ptr_util.h"
namespace {
bool LoadJpegHelper(FPDF_PAGE* pages,
int nCount,
FPDF_PAGEOBJECT image_object,
FPDF_FILEACCESS* fileAccess,
bool inlineJpeg) {
if (!image_object || !fileAccess)
return false;
CFX_RetainPtr<IFX_SeekableReadStream> pFile =
MakeSeekableReadStream(fileAccess);
CPDF_ImageObject* pImgObj = static_cast<CPDF_ImageObject*>(image_object);
if (pages) {
for (int index = 0; index < nCount; index++) {
CPDF_Page* pPage = CPDFPageFromFPDFPage(pages[index]);
if (pPage)
pImgObj->GetImage()->ResetCache(pPage, nullptr);
}
}
if (inlineJpeg)
pImgObj->GetImage()->SetJpegImageInline(pFile);
else
pImgObj->GetImage()->SetJpegImage(pFile);
pImgObj->SetDirty(true);
return true;
}
} // namespace
DLLEXPORT FPDF_PAGEOBJECT STDCALL
FPDFPageObj_NewImageObj(FPDF_DOCUMENT document) {
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
if (!pDoc)
return nullptr;
auto pImageObj = pdfium::MakeUnique<CPDF_ImageObject>();
pImageObj->SetImage(pdfium::MakeRetain<CPDF_Image>(pDoc));
return pImageObj.release();
}
DLLEXPORT FPDF_BOOL STDCALL
FPDFImageObj_LoadJpegFile(FPDF_PAGE* pages,
int nCount,
FPDF_PAGEOBJECT image_object,
FPDF_FILEACCESS* fileAccess) {
return LoadJpegHelper(pages, nCount, image_object, fileAccess, false);
}
DLLEXPORT FPDF_BOOL STDCALL
FPDFImageObj_LoadJpegFileInline(FPDF_PAGE* pages,
int nCount,
FPDF_PAGEOBJECT image_object,
FPDF_FILEACCESS* fileAccess) {
return LoadJpegHelper(pages, nCount, image_object, fileAccess, true);
}
DLLEXPORT FPDF_BOOL STDCALL FPDFImageObj_SetMatrix(FPDF_PAGEOBJECT image_object,
double a,
double b,
double c,
double d,
double e,
double f) {
if (!image_object)
return false;
CPDF_ImageObject* pImgObj = static_cast<CPDF_ImageObject*>(image_object);
pImgObj->set_matrix(CFX_Matrix(static_cast<float>(a), static_cast<float>(b),
static_cast<float>(c), static_cast<float>(d),
static_cast<float>(e), static_cast<float>(f)));
pImgObj->CalcBoundingBox();
pImgObj->SetDirty(true);
return true;
}
DLLEXPORT FPDF_BOOL STDCALL FPDFImageObj_SetBitmap(FPDF_PAGE* pages,
int nCount,
FPDF_PAGEOBJECT image_object,
FPDF_BITMAP bitmap) {
if (!image_object || !bitmap || !pages)
return false;
CPDF_ImageObject* pImgObj = static_cast<CPDF_ImageObject*>(image_object);
for (int index = 0; index < nCount; index++) {
CPDF_Page* pPage = CPDFPageFromFPDFPage(pages[index]);
if (pPage)
pImgObj->GetImage()->ResetCache(pPage, nullptr);
}
CFX_RetainPtr<CFX_DIBitmap> holder(CFXBitmapFromFPDFBitmap(bitmap));
pImgObj->GetImage()->SetImage(holder);
pImgObj->CalcBoundingBox();
pImgObj->SetDirty(true);
return true;
}
DLLEXPORT FPDF_BITMAP STDCALL
FPDFImageObj_GetBitmap(FPDF_PAGEOBJECT image_object) {
CPDF_PageObject* pObj = CPDFPageObjectFromFPDFPageObject(image_object);
if (!pObj || !pObj->IsImage())
return nullptr;
CFX_RetainPtr<CPDF_Image> pImg = pObj->AsImage()->GetImage();
if (!pImg)
return nullptr;
CFX_RetainPtr<CFX_DIBSource> pSource = pImg->LoadDIBSource();
if (!pSource)
return nullptr;
CFX_RetainPtr<CFX_DIBitmap> pBitmap;
// If the source image has a representation of 1 bit per pixel, then convert
// it to a grayscale bitmap having 1 byte per pixel, since bitmaps have no
// concept of bits. Otherwise, convert the source image to a bitmap directly,
// retaining its color representation.
if (pSource->GetBPP() == 1)
pBitmap = pSource->CloneConvert(FXDIB_8bppRgb);
else
pBitmap = pSource->Clone(nullptr);
return pBitmap.Leak();
}
DLLEXPORT unsigned long STDCALL
FPDFImageObj_GetImageDataDecoded(FPDF_PAGEOBJECT image_object,
void* buffer,
unsigned long buflen) {
CPDF_PageObject* pObj = CPDFPageObjectFromFPDFPageObject(image_object);
if (!pObj || !pObj->IsImage())
return 0;
CFX_RetainPtr<CPDF_Image> pImg = pObj->AsImage()->GetImage();
if (!pImg)
return 0;
CPDF_Stream* pImgStream = pImg->GetStream();
if (!pImgStream)
return 0;
return DecodeStreamMaybeCopyAndReturnLength(pImgStream, buffer, buflen);
}
DLLEXPORT unsigned long STDCALL
FPDFImageObj_GetImageDataRaw(FPDF_PAGEOBJECT image_object,
void* buffer,
unsigned long buflen) {
CPDF_PageObject* pObj = CPDFPageObjectFromFPDFPageObject(image_object);
if (!pObj || !pObj->IsImage())
return 0;
CFX_RetainPtr<CPDF_Image> pImg = pObj->AsImage()->GetImage();
if (!pImg)
return 0;
CPDF_Stream* pImgStream = pImg->GetStream();
if (!pImgStream)
return 0;
uint32_t len = pImgStream->GetRawSize();
if (buffer && buflen >= len)
memcpy(buffer, pImgStream->GetRawData(), len);
return len;
}
DLLEXPORT int STDCALL
FPDFImageObj_GetImageFilterCount(FPDF_PAGEOBJECT image_object) {
CPDF_PageObject* pObj = CPDFPageObjectFromFPDFPageObject(image_object);
if (!pObj || !pObj->IsImage())
return 0;
CFX_RetainPtr<CPDF_Image> pImg = pObj->AsImage()->GetImage();
if (!pImg)
return 0;
CPDF_Dictionary* pDict = pImg->GetDict();
CPDF_Object* pFilter = pDict ? pDict->GetDirectObjectFor("Filter") : nullptr;
if (!pFilter)
return 0;
if (pFilter->IsArray())
return pFilter->AsArray()->GetCount();
if (pFilter->IsName())
return 1;
return 0;
}
DLLEXPORT unsigned long STDCALL
FPDFImageObj_GetImageFilter(FPDF_PAGEOBJECT image_object,
int index,
void* buffer,
unsigned long buflen) {
if (index < 0 || index >= FPDFImageObj_GetImageFilterCount(image_object))
return 0;
CPDF_PageObject* pObj = CPDFPageObjectFromFPDFPageObject(image_object);
CPDF_Object* pFilter =
pObj->AsImage()->GetImage()->GetDict()->GetDirectObjectFor("Filter");
CFX_WideString wsFilters;
if (pFilter->IsName())
wsFilters = pFilter->AsName()->GetUnicodeText();
else
wsFilters = pFilter->AsArray()->GetUnicodeTextAt(index);
return Utf16EncodeMaybeCopyAndReturnLength(wsFilters, buffer, buflen);
}
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