Add inline JPEGs.

core/fpdfapi/page/cpdf_image.cpp

Index: core/fpdfapi/page/cpdf_image.cpp
diff --git a/core/fpdfapi/page/cpdf_image.cpp b/core/fpdfapi/page/cpdf_image.cpp
index a17222e3430d39ccf58afc1809d2d9ae436a0909..ba0daf713ac1f8f1a4d3fa1cd0b748c48c10af6e 100644
--- a/core/fpdfapi/page/cpdf_image.cpp
+++ b/core/fpdfapi/page/cpdf_image.cpp
@@ -140,6 +140,23 @@ void CPDF_Image::SetJpegImage(
   m_pStream->InitStreamFromFile(pFile, std::move(pDict));
 }
 
+void CPDF_Image::SetJpegImageInline(
+    const CFX_RetainPtr<IFX_SeekableReadStream>& pFile) {
+  uint32_t size = (uint32_t)pFile->GetSize();

[weili, 2016/12/13 21:55:01]

Avoid C-cast here pls

[rbpotter, 2016/12/14 01:03:28]

Done.

+  if (!size)
+    return;
+
+  std::vector<uint8_t> data(size);
+  if (!pFile->ReadBlock(data.data(), 0, size))
+    return;
+
+  std::unique_ptr<CPDF_Dictionary> pDict = InitJPEG(data.data(), size);
+  if (!pDict)
+    return;
+
+  m_pStream->InitStream(&(data[0]), size, std::move(pDict));

[weili, 2016/12/13 21:55:00]

Seems this line is the only diff with SetJpegImage() function. Maybe combine
them into one?

[rbpotter, 2016/12/14 01:03:28]

There's actually another diff (the size), but I was able to mostly combine them
- let me know if you prefer it this way or if I should go back to 2 different
functions.

[Wei Li, 2016/12/14 01:33:00]

Sorry, didn't realize the size diff. Looks like keeping them separate looks
clearer. 

[rbpotter, 2016/12/14 18:03:36]

Done.

+}
+
 void CPDF_Image::SetImage(const CFX_DIBitmap* pBitmap) {
   int32_t BitmapWidth = pBitmap->GetWidth();
   int32_t BitmapHeight = pBitmap->GetHeight();