Refcount all the IFX_ stream classes all the time.

core/fxcodec/codec/ccodec_progressivedecoder.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 CORE_FXCODEC_CODEC_CCODEC_PROGRESSIVEDECODER_H_
 #define CORE_FXCODEC_CODEC_CCODEC_PROGRESSIVEDECODER_H_
 
 #include <vector>
 
 #include "core/fxcodec/fx_codec_def.h"
+#include "core/fxcrt/cfx_retain_ptr.h"
 #include "core/fxcrt/fx_system.h"
 #include "core/fxge/fx_dib.h"
 
 class CCodec_BmpModule;
 class CCodec_GifContext;
 class CCodec_GifModule;
 class CCodec_JpegModule;
 class CCodec_ModuleMgr;
 class CCodec_PngContext;
 class CCodec_TiffContext;
@@ skipping 15 matching lines @@
     FXCodec_8bppRgb = 0x008,
     FXCodec_Rgb = 0x018,
     FXCodec_Rgb32 = 0x020,
     FXCodec_Argb = 0x220,
     FXCodec_Cmyk = 0x120
   };
 
   explicit CCodec_ProgressiveDecoder(CCodec_ModuleMgr* pCodecMgr);
   ~CCodec_ProgressiveDecoder();
 
-  FXCODEC_STATUS LoadImageInfo(IFX_SeekableReadStream* pFile,
-                               FXCODEC_IMAGE_TYPE imageType,
-                               CFX_DIBAttribute* pAttribute,
-                               bool bSkipImageTypeCheck);
+  FXCODEC_STATUS LoadImageInfo(
+      const CFX_RetainPtr<IFX_SeekableReadStream>& pFile,
+      FXCODEC_IMAGE_TYPE imageType,
+      CFX_DIBAttribute* pAttribute,
+      bool bSkipImageTypeCheck);
 
   FXCODEC_IMAGE_TYPE GetType() const { return m_imagType; }
   int32_t GetWidth() const { return m_SrcWidth; }
   int32_t GetHeight() const { return m_SrcHeight; }
   int32_t GetNumComponents() const { return m_SrcComponents; }
   int32_t GetBPC() const { return m_SrcBPC; }
   void SetClipBox(FX_RECT* clip);
 
   FXCODEC_STATUS GetFrames(int32_t& frames, IFX_Pause* pPause = nullptr);
   FXCODEC_STATUS StartDecode(CFX_DIBitmap* pDIBitmap,
@@ skipping 56 matching lines @@
 
     void Calc(int dest_len, int src_len);
     PixelWeight* GetPixelWeight(int pixel) {
       return reinterpret_cast<PixelWeight*>(m_pWeightTables.data() +
                                             pixel * m_ItemSize);
     }
     int m_ItemSize;
     std::vector<uint8_t> m_pWeightTables;
   };
 
-  IFX_SeekableReadStream* m_pFile;
+  CFX_RetainPtr<IFX_SeekableReadStream> m_pFile;
   CCodec_ModuleMgr* m_pCodecMgr;
   FXJPEG_Context* m_pJpegContext;
   FXPNG_Context* m_pPngContext;
   FXGIF_Context* m_pGifContext;
   FXBMP_Context* m_pBmpContext;
   CCodec_TiffContext* m_pTiffContext;
   FXCODEC_IMAGE_TYPE m_imagType;
   uint32_t m_offSet;
   uint8_t* m_pSrcBuf;
   uint32_t m_SrcSize;
@@ skipping 87 matching lines @@
                        FXCODEC_STATUS& err_status);
   void GifDoubleLineResampleVert(CFX_DIBitmap* pDeviceBitmap,
                                  double scale_y,
                                  int des_row);
   bool BmpReadMoreData(CCodec_BmpModule* pBmpModule,
                        FXCODEC_STATUS& err_status);
   void ResampleVertBT(CFX_DIBitmap* pDeviceBitmap, double scale_y, int des_row);
 };
 
 #endif  // CORE_FXCODEC_CODEC_CCODEC_PROGRESSIVEDECODER_H_