Fix a bunch of sign mismatch warnings.

core/src/fxcodec/codec/fx_codec_jpx_opj.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 <algorithm>
 #include <limits>
 #include <vector>
 
@@ skipping 598 matching lines @@
     image->comps[0].prec = 16;
     image->comps[1].prec = 16;
     image->comps[2].prec = 16;
     return;
   }
 }
 class CJPX_Decoder {
  public:
   explicit CJPX_Decoder(bool use_colorspace);
   ~CJPX_Decoder();
-  FX_BOOL Init(const unsigned char* src_data, int src_size);
+  FX_BOOL Init(const unsigned char* src_data, FX_DWORD src_size);
   void GetInfo(FX_DWORD* width, FX_DWORD* height, FX_DWORD* components);
   bool Decode(uint8_t* dest_buf,
               int pitch,
               const std::vector<uint8_t>& offsets);
 
  private:
   const uint8_t* m_SrcData;
-  int m_SrcSize;
+  FX_DWORD m_SrcSize;
   opj_image_t* image;
   opj_codec_t* l_codec;
   opj_stream_t* l_stream;
   const bool m_UseColorSpace;
 };
 
 CJPX_Decoder::CJPX_Decoder(bool use_colorspace)
     : image(nullptr),
       l_codec(nullptr),
       l_stream(nullptr),
       m_UseColorSpace(use_colorspace) {
 }
 
 CJPX_Decoder::~CJPX_Decoder() {
   if (l_codec) {
     opj_destroy_codec(l_codec);
   }
   if (l_stream) {
     opj_stream_destroy(l_stream);
   }
   if (image) {
     opj_image_destroy(image);
   }
 }
 
-FX_BOOL CJPX_Decoder::Init(const unsigned char* src_data, int src_size) {
+FX_BOOL CJPX_Decoder::Init(const unsigned char* src_data, FX_DWORD src_size) {
   static const unsigned char szJP2Header[] = {
       0x00, 0x00, 0x00, 0x0c, 0x6a, 0x50, 0x20, 0x20, 0x0d, 0x0a, 0x87, 0x0a};
-  if (!src_data || src_size < sizeof(szJP2Header)) {
+  if (!src_data || src_size < sizeof(szJP2Header))
     return FALSE;
-  }
+
   image = NULL;
   m_SrcData = src_data;
   m_SrcSize = src_size;
   DecodeData srcData(const_cast<unsigned char*>(src_data), src_size);
   l_stream = fx_opj_stream_create_memory_stream(&srcData,
                                                 OPJ_J2K_STREAM_CHUNK_SIZE, 1);
   if (l_stream == NULL) {
     return FALSE;
   }
   opj_dparameters_t parameters;
@@ skipping 165 matching lines @@
 bool CCodec_JpxModule::Decode(CJPX_Decoder* pDecoder,
                               uint8_t* dest_data,
                               int pitch,
                               const std::vector<uint8_t>& offsets) {
   return pDecoder->Decode(dest_data, pitch, offsets);
 }
 
 void CCodec_JpxModule::DestroyDecoder(CJPX_Decoder* pDecoder) {
   delete pDecoder;
 }