Rename fpdfsdk/fpdf* files to be consistent

This CL makes the fpdfsdk/fpdf* files to be consistently prefixed with
fpdf_ instead of randomly dropping the _.

Change-Id: I23e3c8a0831b56bcd17c788d9fe874b2ab8b24fc
Reviewed-on: https://pdfium-review.googlesource.com/29390
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>

1 files changed, 310 insertions, 0 deletions

diff --git a/fpdfsdk/fpdf_editimg.cpp b/fpdfsdk/fpdf_editimg.cpp
new file mode 100644
index 0000000000..f1d90ece2d
--- /dev/null
+++ b/fpdfsdk/fpdf_editimg.cpp
@@ -0,0 +1,310 @@
+// 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_page.h"
+#include "core/fpdfapi/page/cpdf_pageobject.h"
+#include "core/fpdfapi/parser/cpdf_array.h"
+#include "core/fpdfapi/parser/cpdf_name.h"
+#include "core/fpdfapi/render/cpdf_dibsource.h"
+#include "fpdfsdk/cpdfsdk_customaccess.h"
+#include "fpdfsdk/cpdfsdk_helpers.h"
+#include "third_party/base/ptr_util.h"
+
+namespace {
+
+// These checks ensure the consistency of colorspace values across core/ and
+// public/.
+static_assert(PDFCS_DEVICEGRAY == FPDF_COLORSPACE_DEVICEGRAY,
+              "PDFCS_DEVICEGRAY value mismatch");
+static_assert(PDFCS_DEVICERGB == FPDF_COLORSPACE_DEVICERGB,
+              "PDFCS_DEVICERGB value mismatch");
+static_assert(PDFCS_DEVICECMYK == FPDF_COLORSPACE_DEVICECMYK,
+              "PDFCS_DEVICECMYK value mismatch");
+static_assert(PDFCS_CALGRAY == FPDF_COLORSPACE_CALGRAY,
+              "PDFCS_CALGRAY value mismatch");
+static_assert(PDFCS_CALRGB == FPDF_COLORSPACE_CALRGB,
+              "PDFCS_CALRGB value mismatch");
+static_assert(PDFCS_LAB == FPDF_COLORSPACE_LAB, "PDFCS_LAB value mismatch");
+static_assert(PDFCS_ICCBASED == FPDF_COLORSPACE_ICCBASED,
+              "PDFCS_ICCBASED value mismatch");
+static_assert(PDFCS_SEPARATION == FPDF_COLORSPACE_SEPARATION,
+              "PDFCS_SEPARATION value mismatch");
+static_assert(PDFCS_DEVICEN == FPDF_COLORSPACE_DEVICEN,
+              "PDFCS_DEVICEN value mismatch");
+static_assert(PDFCS_INDEXED == FPDF_COLORSPACE_INDEXED,
+              "PDFCS_INDEXED value mismatch");
+static_assert(PDFCS_PATTERN == FPDF_COLORSPACE_PATTERN,
+              "PDFCS_PATTERN value mismatch");
+
+RetainPtr<IFX_SeekableReadStream> MakeSeekableReadStream(
+    FPDF_FILEACCESS* pFileAccess) {
+  return pdfium::MakeRetain<CPDFSDK_CustomAccess>(pFileAccess);
+}
+
+bool LoadJpegHelper(FPDF_PAGE* pages,
+                    int nCount,
+                    FPDF_PAGEOBJECT image_object,
+                    FPDF_FILEACCESS* fileAccess,
+                    bool inlineJpeg) {
+  if (!image_object || !fileAccess)
+    return false;
+
+  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
+
+FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV
+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();
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+FPDFImageObj_LoadJpegFile(FPDF_PAGE* pages,
+                          int nCount,
+                          FPDF_PAGEOBJECT image_object,
+                          FPDF_FILEACCESS* fileAccess) {
+  return LoadJpegHelper(pages, nCount, image_object, fileAccess, false);
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+FPDFImageObj_LoadJpegFileInline(FPDF_PAGE* pages,
+                                int nCount,
+                                FPDF_PAGEOBJECT image_object,
+                                FPDF_FILEACCESS* fileAccess) {
+  return LoadJpegHelper(pages, nCount, image_object, fileAccess, true);
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+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;
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+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);
+  }
+  RetainPtr<CFX_DIBitmap> holder(CFXBitmapFromFPDFBitmap(bitmap));
+  pImgObj->GetImage()->SetImage(holder);
+  pImgObj->CalcBoundingBox();
+  pImgObj->SetDirty(true);
+  return true;
+}
+
+FPDF_EXPORT FPDF_BITMAP FPDF_CALLCONV
+FPDFImageObj_GetBitmap(FPDF_PAGEOBJECT image_object) {
+  CPDF_PageObject* pObj = CPDFPageObjectFromFPDFPageObject(image_object);
+  if (!pObj || !pObj->IsImage())
+    return nullptr;
+
+  RetainPtr<CPDF_Image> pImg = pObj->AsImage()->GetImage();
+  if (!pImg)
+    return nullptr;
+
+  RetainPtr<CFX_DIBSource> pSource = pImg->LoadDIBSource();
+  if (!pSource)
+    return nullptr;
+
+  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();
+}
+
+FPDF_EXPORT unsigned long FPDF_CALLCONV
+FPDFImageObj_GetImageDataDecoded(FPDF_PAGEOBJECT image_object,
+                                 void* buffer,
+                                 unsigned long buflen) {
+  CPDF_PageObject* pObj = CPDFPageObjectFromFPDFPageObject(image_object);
+  if (!pObj || !pObj->IsImage())
+    return 0;
+
+  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);
+}
+
+FPDF_EXPORT unsigned long FPDF_CALLCONV
+FPDFImageObj_GetImageDataRaw(FPDF_PAGEOBJECT image_object,
+                             void* buffer,
+                             unsigned long buflen) {
+  CPDF_PageObject* pObj = CPDFPageObjectFromFPDFPageObject(image_object);
+  if (!pObj || !pObj->IsImage())
+    return 0;
+
+  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;
+}
+
+FPDF_EXPORT int FPDF_CALLCONV
+FPDFImageObj_GetImageFilterCount(FPDF_PAGEOBJECT image_object) {
+  CPDF_PageObject* pObj = CPDFPageObjectFromFPDFPageObject(image_object);
+  if (!pObj || !pObj->IsImage())
+    return 0;
+
+  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;
+}
+
+FPDF_EXPORT unsigned long FPDF_CALLCONV
+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");
+  ByteString bsFilter;
+  if (pFilter->IsName())
+    bsFilter = pFilter->AsName()->GetString();
+  else
+    bsFilter = pFilter->AsArray()->GetStringAt(index);
+
+  unsigned long len = bsFilter.GetLength() + 1;
+  if (buffer && len <= buflen)
+    memcpy(buffer, bsFilter.c_str(), len);
+  return len;
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+FPDFImageObj_GetImageMetadata(FPDF_PAGEOBJECT image_object,
+                              FPDF_PAGE page,
+                              FPDF_IMAGEOBJ_METADATA* metadata) {
+  CPDF_PageObject* pObj = CPDFPageObjectFromFPDFPageObject(image_object);
+  if (!pObj || !pObj->IsImage() || !metadata)
+    return false;
+
+  RetainPtr<CPDF_Image> pImg = pObj->AsImage()->GetImage();
+  if (!pImg)
+    return false;
+
+  metadata->marked_content_id = pObj->m_ContentMark.GetMarkedContentID();
+
+  const int nPixelWidth = pImg->GetPixelWidth();
+  const int nPixelHeight = pImg->GetPixelHeight();
+  metadata->width = nPixelWidth;
+  metadata->height = nPixelHeight;
+
+  const float nWidth = pObj->m_Right - pObj->m_Left;
+  const float nHeight = pObj->m_Top - pObj->m_Bottom;
+  constexpr int nPointsPerInch = 72;
+  if (nWidth != 0 && nHeight != 0) {
+    metadata->horizontal_dpi = nPixelWidth / nWidth * nPointsPerInch;
+    metadata->vertical_dpi = nPixelHeight / nHeight * nPointsPerInch;
+  }
+
+  metadata->bits_per_pixel = 0;
+  metadata->colorspace = FPDF_COLORSPACE_UNKNOWN;
+
+  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
+  if (!pPage || !pPage->m_pDocument.Get() || !pImg->GetStream())
+    return true;
+
+  auto pSource = pdfium::MakeRetain<CPDF_DIBSource>();
+  CPDF_DIBSource::LoadState ret = pSource->StartLoadDIBSource(
+      pPage->m_pDocument.Get(), pImg->GetStream(), false, nullptr,
+      pPage->m_pPageResources.Get());
+  if (ret == CPDF_DIBSource::LoadState::kFail)
+    return true;
+
+  metadata->bits_per_pixel = pSource->GetBPP();
+  if (pSource->GetColorSpace())
+    metadata->colorspace = pSource->GetColorSpace()->GetFamily();
+
+  return true;
+}