Merge to XFA: Change |CCodec_ScanlineDecoder::m_Pitch| to FX_DWORD

core/src/fxcodec/codec/fx_codec_jpeg.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
 
 #include <setjmp.h>
 
 #include "codec_int.h"
 #include "core/include/fxcodec/fx_codec.h"
@@ skipping 409 matching lines @@
   m_OutputHeight = m_OrigHeight = height;
   if (!InitDecode()) {
     return FALSE;
   }
   if (cinfo.num_components < nComps) {
     return FALSE;
   }
   if ((int)cinfo.image_width < width) {
     return FALSE;
   }
-  m_Pitch = (cinfo.image_width * cinfo.num_components + 3) / 4 * 4;
+  m_Pitch =
+      (static_cast<FX_DWORD>(cinfo.image_width) * cinfo.num_components + 3) /
+      4 * 4;
   m_pScanlineBuf = FX_Alloc(uint8_t, m_Pitch);
   m_nComps = cinfo.num_components;
   m_bpc = 8;
   m_bColorTransformed = FALSE;
   m_bStarted = FALSE;
   return TRUE;
 }
 extern "C" {
 int32_t FX_GetDownsampleRatio(int32_t originWidth,
                               int32_t originHeight,
@@ skipping 13 matching lines @@
   }
   return 1;
 }
 }
 void CCodec_JpegDecoder::v_DownScale(int dest_width, int dest_height) {
   int old_scale = m_DownScale;
   m_DownScale =
       FX_GetDownsampleRatio(m_OrigWidth, m_OrigHeight, dest_width, dest_height);
   m_OutputWidth = (m_OrigWidth + m_DownScale - 1) / m_DownScale;
   m_OutputHeight = (m_OrigHeight + m_DownScale - 1) / m_DownScale;
-  m_Pitch = (m_OutputWidth * m_nComps + 3) / 4 * 4;
+  m_Pitch = (static_cast<FX_DWORD>(m_OutputWidth) * m_nComps + 3) / 4 * 4;
   if (old_scale != m_DownScale) {
     m_NextLine = -1;
   }
 }
 FX_BOOL CCodec_JpegDecoder::v_Rewind() {
   if (m_bStarted) {
     jpeg_destroy_decompress(&cinfo);
     if (!InitDecode()) {
       return FALSE;
     }
@@ skipping 193 matching lines @@
                                           uint8_t** avail_buf_ptr) {
   if (avail_buf_ptr != NULL) {
     *avail_buf_ptr = NULL;
     if (((FXJPEG_Context*)pContext)->m_SrcMgr.bytes_in_buffer > 0) {
       *avail_buf_ptr =
           (uint8_t*)((FXJPEG_Context*)pContext)->m_SrcMgr.next_input_byte;
     }
   }
   return (FX_DWORD)((FXJPEG_Context*)pContext)->m_SrcMgr.bytes_in_buffer;
 }