Refcount all the IFX_ stream classes all the time.

xfa/fxfa/xfa_ffwidget.h

 // 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
 
 #ifndef XFA_FXFA_XFA_FFWIDGET_H_
 #define XFA_FXFA_XFA_FFWIDGET_H_
 
 #include <vector>
@@ skipping 143 matching lines @@
 CFX_GraphStateData::LineCap XFA_LineCapToFXGE(int32_t iLineCap);
 void XFA_DrawImage(CFX_Graphics* pGS,
                    const CFX_RectF& rtImage,
                    CFX_Matrix* pMatrix,
                    CFX_DIBitmap* pDIBitmap,
                    int32_t iAspect,
                    int32_t iImageXDpi,
                    int32_t iImageYDpi,
                    int32_t iHorzAlign = XFA_ATTRIBUTEENUM_Left,
                    int32_t iVertAlign = XFA_ATTRIBUTEENUM_Top);
+
 CFX_DIBitmap* XFA_LoadImageData(CXFA_FFDoc* pDoc,
                                 CXFA_Image* pImage,
                                 bool& bNameImage,
                                 int32_t& iImageXDpi,
                                 int32_t& iImageYDpi);
-CFX_DIBitmap* XFA_LoadImageFromBuffer(IFX_SeekableReadStream* pImageFileRead,
-                                      FXCODEC_IMAGE_TYPE type,
-                                      int32_t& iImageXDpi,
-                                      int32_t& iImageYDpi);
+
+CFX_DIBitmap* XFA_LoadImageFromBuffer(
+    const CFX_RetainPtr<IFX_SeekableReadStream>& pImageFileRead,
+    FXCODEC_IMAGE_TYPE type,
+    int32_t& iImageXDpi,
+    int32_t& iImageYDpi);
+
 FXCODEC_IMAGE_TYPE XFA_GetImageType(const CFX_WideString& wsType);
 FX_CHAR* XFA_Base64Encode(const uint8_t* buf, int32_t buf_len);
 void XFA_RectWidthoutMargin(CFX_RectF& rt,
                             const CXFA_Margin& mg,
                             bool bUI = false);
 CXFA_FFWidget* XFA_GetWidgetFromLayoutItem(CXFA_LayoutItem* pLayoutItem);
 bool XFA_IsCreateWidget(XFA_Element iType);
 #define XFA_DRAWBOX_ForceRound 1
 #define XFA_DRAWBOX_Lowered3D 2
 void XFA_DrawBox(CXFA_Box box,
                  CFX_Graphics* pGS,
                  const CFX_RectF& rtWidget,
                  CFX_Matrix* pMatrix,
                  uint32_t dwFlags = 0);
 
 #endif  // XFA_FXFA_XFA_FFWIDGET_H_