diff --git a/core/fxcodec/bmp/fx_bmp.cpp b/core/fxcodec/bmp/fx_bmp.cpp
index 31a9328..910e0a6 100644
--- a/core/fxcodec/bmp/fx_bmp.cpp
+++ b/core/fxcodec/bmp/fx_bmp.cpp
@@ -28,7 +28,7 @@
 
 }  // namespace
 
-BMPDecompressor::BMPDecompressor()
+CFX_BmpDecompressor::CFX_BmpDecompressor()
     : context_ptr_(nullptr),
       next_in_(nullptr),
       header_offset_(0),
@@ -57,24 +57,24 @@
       skip_size_(0),
       decode_status_(BMP_D_STATUS_HEADER) {}
 
-BMPDecompressor::~BMPDecompressor() {}
+CFX_BmpDecompressor::~CFX_BmpDecompressor() {}
 
-void BMPDecompressor::Error() {
+void CFX_BmpDecompressor::Error() {
   longjmp(jmpbuf_, 1);
 }
 
-void BMPDecompressor::ReadScanline(uint32_t row_num_,
-                                   const std::vector<uint8_t>& row_buf) {
-  auto* p = reinterpret_cast<CBmpContext*>(context_ptr_);
+void CFX_BmpDecompressor::ReadScanline(uint32_t row_num_,
+                                       const std::vector<uint8_t>& row_buf) {
+  auto* p = reinterpret_cast<CFX_BmpContext*>(context_ptr_);
   p->m_pDelegate->BmpReadScanline(row_num_, row_buf);
 }
 
-bool BMPDecompressor::GetDataPosition(uint32_t rcd_pos) {
-  auto* p = reinterpret_cast<CBmpContext*>(context_ptr_);
+bool CFX_BmpDecompressor::GetDataPosition(uint32_t rcd_pos) {
+  auto* p = reinterpret_cast<CFX_BmpContext*>(context_ptr_);
   return p->m_pDelegate->BmpInputImagePositionBuf(rcd_pos);
 }
 
-int32_t BMPDecompressor::ReadHeader() {
+int32_t CFX_BmpDecompressor::ReadHeader() {
   uint32_t skip_size_org = skip_size_;
   if (decode_status_ == BMP_D_STATUS_HEADER) {
     BmpFileHeader* pBmp_header = nullptr;
@@ -291,7 +291,7 @@
   return 1;
 }
 
-bool BMPDecompressor::ValidateFlag() const {
+bool CFX_BmpDecompressor::ValidateFlag() const {
   switch (compress_flag_) {
     case BMP_RGB:
     case BMP_BITFIELDS:
@@ -303,7 +303,7 @@
   }
 }
 
-int32_t BMPDecompressor::DecodeImage() {
+int32_t CFX_BmpDecompressor::DecodeImage() {
   if (decode_status_ == BMP_D_STATUS_DATA_PRE) {
     avail_in_ = 0;
     if (!GetDataPosition(header_offset_)) {
@@ -331,7 +331,7 @@
   }
 }
 
-bool BMPDecompressor::ValidateColorIndex(uint8_t val) {
+bool CFX_BmpDecompressor::ValidateColorIndex(uint8_t val) {
   if (val >= pal_num_) {
     Error();
     NOTREACHED();
@@ -339,7 +339,7 @@
   return true;
 }
 
-int32_t BMPDecompressor::DecodeRGB() {
+int32_t CFX_BmpDecompressor::DecodeRGB() {
   uint8_t* des_buf = nullptr;
   while (row_num_ < height_) {
     size_t idx = 0;
@@ -408,7 +408,7 @@
   return 1;
 }
 
-int32_t BMPDecompressor::DecodeRLE8() {
+int32_t CFX_BmpDecompressor::DecodeRLE8() {
   uint8_t* first_byte_ptr = nullptr;
   uint8_t* second_byte_ptr = nullptr;
   col_num_ = 0;
@@ -511,7 +511,7 @@
   NOTREACHED();
 }
 
-int32_t BMPDecompressor::DecodeRLE4() {
+int32_t CFX_BmpDecompressor::DecodeRLE4() {
   uint8_t* first_byte_ptr = nullptr;
   uint8_t* second_byte_ptr = nullptr;
   col_num_ = 0;
@@ -630,7 +630,7 @@
   NOTREACHED();
 }
 
-uint8_t* BMPDecompressor::ReadData(uint8_t** des_buf, uint32_t data_size_) {
+uint8_t* CFX_BmpDecompressor::ReadData(uint8_t** des_buf, uint32_t data_size_) {
   if (avail_in_ < skip_size_ + data_size_)
     return nullptr;
 
@@ -639,20 +639,20 @@
   return *des_buf;
 }
 
-void BMPDecompressor::SaveDecodingStatus(int32_t status) {
+void CFX_BmpDecompressor::SaveDecodingStatus(int32_t status) {
   decode_status_ = status;
   next_in_ += skip_size_;
   avail_in_ -= skip_size_;
   skip_size_ = 0;
 }
 
-void BMPDecompressor::SetInputBuffer(uint8_t* src_buf, uint32_t src_size) {
+void CFX_BmpDecompressor::SetInputBuffer(uint8_t* src_buf, uint32_t src_size) {
   next_in_ = src_buf;
   avail_in_ = src_size;
   skip_size_ = 0;
 }
 
-uint32_t BMPDecompressor::GetAvailInput(uint8_t** avail_buf) {
+uint32_t CFX_BmpDecompressor::GetAvailInput(uint8_t** avail_buf) {
   if (avail_buf) {
     *avail_buf = nullptr;
     if (avail_in_ > 0)
@@ -661,7 +661,7 @@
   return avail_in_;
 }
 
-void BMPDecompressor::SetHeight(int32_t signed_height) {
+void CFX_BmpDecompressor::SetHeight(int32_t signed_height) {
   if (signed_height >= 0) {
     height_ = signed_height;
     return;
diff --git a/core/fxcodec/bmp/fx_bmp.h b/core/fxcodec/bmp/fx_bmp.h
index 4033e51..d81b97e 100644
--- a/core/fxcodec/bmp/fx_bmp.h
+++ b/core/fxcodec/bmp/fx_bmp.h
@@ -64,10 +64,10 @@
 } BmpInfoHeader;
 #pragma pack()
 
-class BMPDecompressor {
+class CFX_BmpDecompressor {
  public:
-  BMPDecompressor();
-  ~BMPDecompressor();
+  CFX_BmpDecompressor();
+  ~CFX_BmpDecompressor();
 
   void Error();
   int32_t DecodeImage();
@@ -123,12 +123,13 @@
   void SetHeight(int32_t signed_height);
 };
 
-class CBmpContext : public CCodec_BmpModule::Context {
+class CFX_BmpContext : public CCodec_BmpModule::Context {
  public:
-  CBmpContext(CCodec_BmpModule* pModule, CCodec_BmpModule::Delegate* pDelegate);
-  ~CBmpContext() override;
+  CFX_BmpContext(CCodec_BmpModule* pModule,
+                 CCodec_BmpModule::Delegate* pDelegate);
+  ~CFX_BmpContext() override;
 
-  BMPDecompressor m_Bmp;
+  CFX_BmpDecompressor m_Bmp;
   UnownedPtr<CCodec_BmpModule> const m_pModule;
   UnownedPtr<CCodec_BmpModule::Delegate> const m_pDelegate;
 };
diff --git a/core/fxcodec/codec/ccodec_bmpmodule.cpp b/core/fxcodec/codec/ccodec_bmpmodule.cpp
index 9fbb557..260ebbd4 100644
--- a/core/fxcodec/codec/ccodec_bmpmodule.cpp
+++ b/core/fxcodec/codec/ccodec_bmpmodule.cpp
@@ -13,12 +13,11 @@
 #include "core/fxge/fx_dib.h"
 #include "third_party/base/ptr_util.h"
 
-CBmpContext::CBmpContext(CCodec_BmpModule* pModule,
-                         CCodec_BmpModule::Delegate* pDelegate)
-    : m_pModule(pModule), m_pDelegate(pDelegate) {
-}
+CFX_BmpContext::CFX_BmpContext(CCodec_BmpModule* pModule,
+                               CCodec_BmpModule::Delegate* pDelegate)
+    : m_pModule(pModule), m_pDelegate(pDelegate) {}
 
-CBmpContext::~CBmpContext() {}
+CFX_BmpContext::~CFX_BmpContext() {}
 
 CCodec_BmpModule::CCodec_BmpModule() {}
 
@@ -26,7 +25,7 @@
 
 std::unique_ptr<CCodec_BmpModule::Context> CCodec_BmpModule::Start(
     Delegate* pDelegate) {
-  auto p = pdfium::MakeUnique<CBmpContext>(this, pDelegate);
+  auto p = pdfium::MakeUnique<CFX_BmpContext>(this, pDelegate);
   p->m_Bmp.context_ptr_ = p.get();
   return p;
 }
@@ -39,7 +38,7 @@
                                      int32_t* pal_num,
                                      std::vector<uint32_t>* palette,
                                      CFX_DIBAttribute* pAttribute) {
-  auto* ctx = static_cast<CBmpContext*>(pContext);
+  auto* ctx = static_cast<CFX_BmpContext*>(pContext);
   if (setjmp(ctx->m_Bmp.jmpbuf_))
     return 0;
 
@@ -63,7 +62,7 @@
 }
 
 int32_t CCodec_BmpModule::LoadImage(Context* pContext) {
-  auto* ctx = static_cast<CBmpContext*>(pContext);
+  auto* ctx = static_cast<CFX_BmpContext*>(pContext);
   if (setjmp(ctx->m_Bmp.jmpbuf_))
     return 0;
 
@@ -72,13 +71,13 @@
 
 uint32_t CCodec_BmpModule::GetAvailInput(Context* pContext,
                                          uint8_t** avail_buf_ptr) {
-  auto* ctx = static_cast<CBmpContext*>(pContext);
+  auto* ctx = static_cast<CFX_BmpContext*>(pContext);
   return ctx->m_Bmp.GetAvailInput(avail_buf_ptr);
 }
 
 void CCodec_BmpModule::Input(Context* pContext,
                              const uint8_t* src_buf,
                              uint32_t src_size) {
-  auto* ctx = static_cast<CBmpContext*>(pContext);
+  auto* ctx = static_cast<CFX_BmpContext*>(pContext);
   ctx->m_Bmp.SetInputBuffer(const_cast<uint8_t*>(src_buf), src_size);
 }