Clean compiling warnings on Linux

xfa/src/fxbarcode/BC_BarCode.cpp

 // 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
 // Original code is licensed as follows:
 /*
  * Copyright 2011 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 194 matching lines @@
   }
   BCFORMAT format = BCFORMAT_CODE_39;
   int32_t outWidth = 0;
   int32_t outHeight = 0;
   CFX_WideString filtercontents =
       ((CBC_OnedCode39Writer*)m_pBCWriter)->FilterContents(contents);
   CFX_WideString renderContents =
       ((CBC_OnedCode39Writer*)m_pBCWriter)->RenderTextContents(contents);
   m_renderContents = renderContents;
   CFX_ByteString byteString = filtercontents.UTF8Encode();
-  uint8_t* data =
-      m_pBCWriter->Encode(byteString, format, outWidth, outHeight, e);
+  uint8_t* data = static_cast<CBC_OnedCode39Writer*>(m_pBCWriter)
+                      ->Encode(byteString, format, outWidth, outHeight, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   ((CBC_OneDimWriter*)m_pBCWriter)
       ->RenderResult(renderContents, data, outWidth, isDevice, e);
   FX_Free(data);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   return TRUE;
 }
 FX_BOOL CBC_Code39::RenderDevice(CFX_RenderDevice* device,
                                  const CFX_Matrix* matirx,
                                  int32_t& e) {
@@ skipping 81 matching lines @@
     e = BCExceptionNoContents;
     return FALSE;
   }
   BCFORMAT format = BCFORMAT_CODABAR;
   int32_t outWidth = 0;
   int32_t outHeight = 0;
   CFX_WideString filtercontents =
       ((CBC_OneDimWriter*)m_pBCWriter)->FilterContents(contents);
   CFX_ByteString byteString = filtercontents.UTF8Encode();
   m_renderContents = filtercontents;
-  uint8_t* data =
-      m_pBCWriter->Encode(byteString, format, outWidth, outHeight, e);
+  uint8_t* data = static_cast<CBC_OnedCodaBarWriter*>(m_pBCWriter)
+                      ->Encode(byteString, format, outWidth, outHeight, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   ((CBC_OneDimWriter*)m_pBCWriter)
       ->RenderResult(filtercontents, data, outWidth, isDevice, e);
   FX_Free(data);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   return TRUE;
 }
 FX_BOOL CBC_Codabar::RenderDevice(CFX_RenderDevice* device,
                                   const CFX_Matrix* matirx,
                                   int32_t& e) {
@@ skipping 59 matching lines @@
   int32_t outHeight = 0;
   CFX_WideString content = contents;
   if (contents.GetLength() % 2 &&
       ((CBC_OnedCode128Writer*)m_pBCWriter)->GetType() == BC_CODE128_C) {
     content += '0';
   }
   CFX_WideString encodeContents =
       ((CBC_OnedCode128Writer*)m_pBCWriter)->FilterContents(content);
   m_renderContents = encodeContents;
   CFX_ByteString byteString = encodeContents.UTF8Encode();
-  uint8_t* data =
-      m_pBCWriter->Encode(byteString, format, outWidth, outHeight, e);
+  uint8_t* data = static_cast<CBC_OnedCode128Writer*>(m_pBCWriter)
+                      ->Encode(byteString, format, outWidth, outHeight, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   ((CBC_OneDimWriter*)m_pBCWriter)
       ->RenderResult(encodeContents, data, outWidth, isDevice, e);
   FX_Free(data);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   return TRUE;
 }
 FX_BOOL CBC_Code128::RenderDevice(CFX_RenderDevice* device,
                                   const CFX_Matrix* matirx,
                                   int32_t& e) {
@@ skipping 61 matching lines @@
   if (contents.IsEmpty()) {
     e = BCExceptionNoContents;
     return FALSE;
   }
   BCFORMAT format = BCFORMAT_EAN_8;
   int32_t outWidth = 0;
   int32_t outHeight = 0;
   CFX_WideString encodeContents = Preprocess(contents);
   CFX_ByteString byteString = encodeContents.UTF8Encode();
   m_renderContents = encodeContents;
-  uint8_t* data =
-      m_pBCWriter->Encode(byteString, format, outWidth, outHeight, e);
+  uint8_t* data = static_cast<CBC_OnedEAN8Writer*>(m_pBCWriter)
+                      ->Encode(byteString, format, outWidth, outHeight, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   ((CBC_OneDimWriter*)m_pBCWriter)
       ->RenderResult(encodeContents, data, outWidth, isDevice, e);
   FX_Free(data);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   return TRUE;
 }
 FX_BOOL CBC_EAN8::RenderDevice(CFX_RenderDevice* device,
                                const CFX_Matrix* matirx,
                                int32_t& e) {
@@ skipping 62 matching lines @@
   if (contents.IsEmpty()) {
     e = BCExceptionNoContents;
     return FALSE;
   }
   BCFORMAT format = BCFORMAT_EAN_13;
   int32_t outWidth = 0;
   int32_t outHeight = 0;
   CFX_WideString encodeContents = Preprocess(contents);
   CFX_ByteString byteString = encodeContents.UTF8Encode();
   m_renderContents = encodeContents;
-  uint8_t* data =
-      m_pBCWriter->Encode(byteString, format, outWidth, outHeight, e);
+  uint8_t* data = static_cast<CBC_OnedEAN13Writer*>(m_pBCWriter)
+                      ->Encode(byteString, format, outWidth, outHeight, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   ((CBC_OneDimWriter*)m_pBCWriter)
       ->RenderResult(encodeContents, data, outWidth, isDevice, e);
   FX_Free(data);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   return TRUE;
 }
 FX_BOOL CBC_EAN13::RenderDevice(CFX_RenderDevice* device,
                                 const CFX_Matrix* matirx,
                                 int32_t& e) {
@@ skipping 64 matching lines @@
     e = BCExceptionNoContents;
     return FALSE;
   }
   BCFORMAT format = BCFORMAT_UPC_A;
   int32_t outWidth = 0;
   int32_t outHeight = 0;
   CFX_WideString encodeContents = Preprocess(contents);
   CFX_ByteString byteString = encodeContents.UTF8Encode();
   m_renderContents = encodeContents;
   ((CBC_OnedUPCAWriter*)m_pBCWriter)->Init();
-  uint8_t* data =
-      m_pBCWriter->Encode(byteString, format, outWidth, outHeight, e);
+  uint8_t* data = static_cast<CBC_OnedUPCAWriter*>(m_pBCWriter)
+                      ->Encode(byteString, format, outWidth, outHeight, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   ((CBC_OneDimWriter*)m_pBCWriter)
       ->RenderResult(encodeContents, data, outWidth, isDevice, e);
   FX_Free(data);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   return TRUE;
 }
 FX_BOOL CBC_UPCA::RenderDevice(CFX_RenderDevice* device,
                                const CFX_Matrix* matirx,
                                int32_t& e) {
@@ skipping 204 matching lines @@
   return str;
 }
 CFX_WideString CBC_DataMatrix::Decode(CFX_DIBitmap* pBitmap, int32_t& e) {
   CBC_BufferedImageLuminanceSource source(pBitmap);
   CBC_GlobalHistogramBinarizer binarizer(&source);
   CBC_BinaryBitmap bitmap(&binarizer);
   CFX_ByteString retStr = m_pBCReader->Decode(&bitmap, 0, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FX_WSTRC(L""));
   return CFX_WideString::FromUTF8(retStr, retStr.GetLength());
 }