Remove external jpeg provider interface.

It is unused in PDFium.

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1407903005 .

6 files changed, 16 insertions, 158 deletions

diff --git a/BUILD.gn b/BUILD.gn
index 120abc2fe2..381e4a77da 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -357,7 +357,6 @@ static_library("fxcodec") {
     "core/include/fxcodec/fx_codec.h",
     "core/include/fxcodec/fx_codec_def.h",
     "core/include/fxcodec/fx_codec_flate.h",
-    "core/include/fxcodec/fx_codec_provider.h",
     "core/src/fxcodec/codec/codec_int.h",
     "core/src/fxcodec/codec/fx_codec.cpp",
     "core/src/fxcodec/codec/fx_codec_fax.cpp",
diff --git a/core/include/fxcodec/fx_codec.h b/core/include/fxcodec/fx_codec.h
index f283e64cd8..1d5bd78ac4 100644
--- a/core/include/fxcodec/fx_codec.h
+++ b/core/include/fxcodec/fx_codec.h
@@ -12,7 +12,6 @@
 #include "../../../third_party/base/nonstd_unique_ptr.h"
 #include "../fxcrt/fx_basic.h"
 #include "fx_codec_def.h"
-#include "fx_codec_provider.h"
 
 class CFX_DIBSource;
 class CJPX_Decoder;
@@ -157,8 +156,6 @@ class ICodec_JpegModule {
  public:
   virtual ~ICodec_JpegModule() {}
 
-  virtual void SetPovider(IFX_JpegProvider* pJP) = 0;
-
   virtual ICodec_ScanlineDecoder* CreateDecoder(const uint8_t* src_buf,
                                                 FX_DWORD src_size,
                                                 int width,
diff --git a/core/include/fxcodec/fx_codec_provider.h b/core/include/fxcodec/fx_codec_provider.h
deleted file mode 100644
index 9cb59651cc..0000000000
--- a/core/include/fxcodec/fx_codec_provider.h
+++ /dev/null
@@ -1,74 +0,0 @@
-// 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_INCLUDE_FXCODEC_FX_CODEC_PROVIDER_H_
-#define CORE_INCLUDE_FXCODEC_FX_CODEC_PROVIDER_H_
-
-#include "../fxcrt/fx_system.h"
-
-class IFX_JpegProvider {
- public:
-  virtual void Release() = 0;
-
-  virtual void* CreateDecoder(const uint8_t* src_buf,
-                              FX_DWORD src_size,
-                              int width,
-                              int height,
-                              int nComps,
-                              FX_BOOL ColorTransform) = 0;
-
-  virtual void DestroyDecoder(void* pDecoder) = 0;
-
-  virtual void DownScale(void* pDecoder, int dest_width, int dest_height) = 0;
-
-  virtual FX_BOOL Rewind(void* pDecoder) = 0;
-
-  virtual uint8_t* GetNextLine(void* pDecoder) = 0;
-
-  virtual FX_DWORD GetSrcOffset(void* pDecoder) = 0;
-
-  virtual FX_BOOL LoadInfo(const uint8_t* src_buf,
-                           FX_DWORD src_size,
-                           int& width,
-                           int& height,
-                           int& num_components,
-                           int& bits_per_components,
-                           FX_BOOL& color_transform,
-                           uint8_t** icc_buf_ptr = NULL,
-                           FX_DWORD* icc_length = NULL) = 0;
-
-  virtual FX_BOOL Encode(const class CFX_DIBSource* pSource,
-                         uint8_t*& dest_buf,
-                         FX_STRSIZE& dest_size,
-                         int quality = 75,
-                         const uint8_t* icc_buf = NULL,
-                         FX_DWORD icc_length = 0) = 0;
-
-  virtual void* Start() = 0;
-
-  virtual void Finish(void* pContext) = 0;
-
-  virtual void Input(void* pContext,
-                     const uint8_t* src_buf,
-                     FX_DWORD src_size) = 0;
-
-  virtual int ReadHeader(void* pContext,
-                         int* width,
-                         int* height,
-                         int* nComps) = 0;
-
-  virtual int StartScanline(void* pContext, int down_scale) = 0;
-
-  virtual FX_BOOL ReadScanline(void* pContext, uint8_t* dest_buf) = 0;
-
-  virtual FX_DWORD GetAvailInput(void* pContext,
-                                 uint8_t** avail_buf_ptr = NULL) = 0;
-
- protected:
-  ~IFX_JpegProvider() {}
-};
-
-#endif  // CORE_INCLUDE_FXCODEC_FX_CODEC_PROVIDER_H_
diff --git a/core/src/fxcodec/codec/codec_int.h b/core/src/fxcodec/codec/codec_int.h
index 9f408dd9a2..1fd228996d 100644
--- a/core/src/fxcodec/codec/codec_int.h
+++ b/core/src/fxcodec/codec/codec_int.h
@@ -158,14 +158,13 @@ class CCodec_FlateModule : public ICodec_FlateModule {
 
 class CCodec_JpegModule : public ICodec_JpegModule {
  public:
-  CCodec_JpegModule() : m_pExtProvider(NULL) {}
-  void SetPovider(IFX_JpegProvider* pJP) { m_pExtProvider = pJP; }
+  CCodec_JpegModule() {}
   ICodec_ScanlineDecoder* CreateDecoder(const uint8_t* src_buf,
                                         FX_DWORD src_size,
                                         int width,
                                         int height,
                                         int nComps,
-                                        FX_BOOL ColorTransform);
+                                        FX_BOOL ColorTransform) override;
   FX_BOOL LoadInfo(const uint8_t* src_buf,
                    FX_DWORD src_size,
                    int& width,
@@ -174,23 +173,22 @@ class CCodec_JpegModule : public ICodec_JpegModule {
                    int& bits_per_components,
                    FX_BOOL& color_transform,
                    uint8_t** icc_buf_ptr,
-                   FX_DWORD* icc_length);
+                   FX_DWORD* icc_length) override;
   FX_BOOL Encode(const CFX_DIBSource* pSource,
                  uint8_t*& dest_buf,
                  FX_STRSIZE& dest_size,
                  int quality,
                  const uint8_t* icc_buf,
-                 FX_DWORD icc_length);
-  virtual void* Start();
-  virtual void Finish(void* pContext);
-  virtual void Input(void* pContext, const uint8_t* src_buf, FX_DWORD src_size);
-  virtual int ReadHeader(void* pContext, int* width, int* height, int* nComps);
-  virtual int StartScanline(void* pContext, int down_scale);
-  virtual FX_BOOL ReadScanline(void* pContext, uint8_t* dest_buf);
-  virtual FX_DWORD GetAvailInput(void* pContext, uint8_t** avail_buf_ptr);
-
- protected:
-  IFX_JpegProvider* m_pExtProvider;
+                 FX_DWORD icc_length) override;
+  void* Start() override;
+  void Finish(void* pContext) override;
+  void Input(void* pContext,
+             const uint8_t* src_buf,
+             FX_DWORD src_size) override;
+  int ReadHeader(void* pContext, int* width, int* height, int* nComps) override;
+  int StartScanline(void* pContext, int down_scale) override;
+  FX_BOOL ReadScanline(void* pContext, uint8_t* dest_buf) override;
+  FX_DWORD GetAvailInput(void* pContext, uint8_t** avail_buf_ptr) override;
 };
 class CCodec_IccModule : public ICodec_IccModule {
  public:
diff --git a/core/src/fxcodec/codec/fx_codec_jpeg.cpp b/core/src/fxcodec/codec/fx_codec_jpeg.cpp
index 4fdbb8ed29..544a6d14cf 100644
--- a/core/src/fxcodec/codec/fx_codec_jpeg.cpp
+++ b/core/src/fxcodec/codec/fx_codec_jpeg.cpp
@@ -296,8 +296,7 @@ class CCodec_JpegDecoder : public CCodec_ScanlineDecoder {
                  int width,
                  int height,
                  int nComps,
-                 FX_BOOL ColorTransform,
-                 IFX_JpegProvider* pJP);
+                 FX_BOOL ColorTransform);
   void Destroy() { delete this; }
 
   // CCodec_ScanlineDecoder
@@ -321,8 +320,6 @@ class CCodec_JpegDecoder : public CCodec_ScanlineDecoder {
   FX_BOOL m_bJpegTransform;
 
  protected:
-  IFX_JpegProvider* m_pExtProvider;
-  void* m_pExtContext;
   FX_DWORD m_nDefaultScaleDenom;
 };
 
@@ -331,18 +328,12 @@ CCodec_JpegDecoder::CCodec_JpegDecoder() {
   m_DownScale = 1;
   m_bStarted = FALSE;
   m_bInited = FALSE;
-  m_pExtProvider = NULL;
-  m_pExtContext = NULL;
   FXSYS_memset(&cinfo, 0, sizeof(cinfo));
   FXSYS_memset(&jerr, 0, sizeof(jerr));
   FXSYS_memset(&src, 0, sizeof(src));
   m_nDefaultScaleDenom = 1;
 }
 CCodec_JpegDecoder::~CCodec_JpegDecoder() {
-  if (m_pExtProvider) {
-    m_pExtProvider->DestroyDecoder(m_pExtContext);
-    return;
-  }
   FX_Free(m_pScanlineBuf);
   if (m_bInited) {
     jpeg_destroy_decompress(&cinfo);
@@ -388,14 +379,7 @@ FX_BOOL CCodec_JpegDecoder::Create(const uint8_t* src_buf,
                                    int width,
                                    int height,
                                    int nComps,
-                                   FX_BOOL ColorTransform,
-                                   IFX_JpegProvider* pJP) {
-  if (pJP) {
-    m_pExtProvider = pJP;
-    m_pExtContext = m_pExtProvider->CreateDecoder(
-        src_buf, src_size, width, height, nComps, ColorTransform);
-    return m_pExtContext != NULL;
-  }
+                                   FX_BOOL ColorTransform) {
   _JpegScanSOI(src_buf, src_size);
   m_SrcBuf = src_buf;
   m_SrcSize = src_size;
@@ -455,10 +439,6 @@ int32_t FX_GetDownsampleRatio(int32_t originWidth,
 }
 }
 void CCodec_JpegDecoder::v_DownScale(int dest_width, int dest_height) {
-  if (m_pExtProvider) {
-    m_pExtProvider->DownScale(m_pExtContext, dest_width, dest_height);
-    return;
-  }
   int old_scale = m_DownScale;
   m_DownScale =
       FX_GetDownsampleRatio(m_OrigWidth, m_OrigHeight, dest_width, dest_height);
@@ -470,9 +450,6 @@ void CCodec_JpegDecoder::v_DownScale(int dest_width, int dest_height) {
   }
 }
 FX_BOOL CCodec_JpegDecoder::v_Rewind() {
-  if (m_pExtProvider) {
-    return m_pExtProvider->Rewind(m_pExtContext);
-  }
   if (m_bStarted) {
     jpeg_destroy_decompress(&cinfo);
     if (!InitDecode()) {
@@ -497,9 +474,6 @@ FX_BOOL CCodec_JpegDecoder::v_Rewind() {
   return TRUE;
 }
 uint8_t* CCodec_JpegDecoder::v_GetNextLine() {
-  if (m_pExtProvider) {
-    return m_pExtProvider->GetNextLine(m_pExtContext);
-  }
   int nlines = jpeg_read_scanlines(&cinfo, &m_pScanlineBuf, 1);
   if (nlines < 1) {
     return NULL;
@@ -507,9 +481,6 @@ uint8_t* CCodec_JpegDecoder::v_GetNextLine() {
   return m_pScanlineBuf;
 }
 FX_DWORD CCodec_JpegDecoder::GetSrcOffset() {
-  if (m_pExtProvider) {
-    return m_pExtProvider->GetSrcOffset(m_pExtContext);
-  }
   return (FX_DWORD)(m_SrcSize - src.bytes_in_buffer);
 }
 ICodec_ScanlineDecoder* CCodec_JpegModule::CreateDecoder(
@@ -524,7 +495,7 @@ ICodec_ScanlineDecoder* CCodec_JpegModule::CreateDecoder(
   }
   CCodec_JpegDecoder* pDecoder = new CCodec_JpegDecoder;
   if (!pDecoder->Create(src_buf, src_size, width, height, nComps,
-                        ColorTransform, m_pExtProvider)) {
+                        ColorTransform)) {
     delete pDecoder;
     return NULL;
   }
@@ -539,11 +510,6 @@ FX_BOOL CCodec_JpegModule::LoadInfo(const uint8_t* src_buf,
                                     FX_BOOL& color_transform,
                                     uint8_t** icc_buf_ptr,
                                     FX_DWORD* icc_length) {
-  if (m_pExtProvider) {
-    return m_pExtProvider->LoadInfo(src_buf, src_size, width, height,
-                                    num_components, bits_per_components,
-                                    color_transform, icc_buf_ptr, icc_length);
-  }
   return _JpegLoadInfo(src_buf, src_size, width, height, num_components,
                        bits_per_components, color_transform, icc_buf_ptr,
                        icc_length);
@@ -554,10 +520,6 @@ FX_BOOL CCodec_JpegModule::Encode(const CFX_DIBSource* pSource,
                                   int quality,
                                   const uint8_t* icc_buf,
                                   FX_DWORD icc_length) {
-  if (m_pExtProvider) {
-    return m_pExtProvider->Encode(pSource, dest_buf, dest_size, quality,
-                                  icc_buf, icc_length);
-  }
   if (pSource->GetBPP() < 8 || pSource->GetPalette() != NULL) {
     ASSERT(pSource->GetBPP() >= 8 && pSource->GetPalette() == NULL);
     return FALSE;
@@ -598,9 +560,6 @@ static void jpeg_free_func(void* p) {
   FX_Free(p);
 }
 void* CCodec_JpegModule::Start() {
-  if (m_pExtProvider) {
-    return m_pExtProvider->Start();
-  }
   FXJPEG_Context* p = FX_Alloc(FXJPEG_Context, 1);
   p->m_AllocFunc = jpeg_alloc_func;
   p->m_FreeFunc = jpeg_free_func;
@@ -625,10 +584,6 @@ void* CCodec_JpegModule::Start() {
   return p;
 }
 void CCodec_JpegModule::Finish(void* pContext) {
-  if (m_pExtProvider) {
-    m_pExtProvider->Finish(pContext);
-    return;
-  }
   FXJPEG_Context* p = (FXJPEG_Context*)pContext;
   jpeg_destroy_decompress(&p->m_Info);
   p->m_FreeFunc(p);
@@ -636,10 +591,6 @@ void CCodec_JpegModule::Finish(void* pContext) {
 void CCodec_JpegModule::Input(void* pContext,
                               const unsigned char* src_buf,
                               FX_DWORD src_size) {
-  if (m_pExtProvider) {
-    m_pExtProvider->Input(pContext, src_buf, src_size);
-    return;
-  }
   FXJPEG_Context* p = (FXJPEG_Context*)pContext;
   if (p->m_SkipSize) {
     if (p->m_SkipSize > src_size) {
@@ -658,9 +609,6 @@ int CCodec_JpegModule::ReadHeader(void* pContext,
                                   int* width,
                                   int* height,
                                   int* nComps) {
-  if (m_pExtProvider) {
-    return m_pExtProvider->ReadHeader(pContext, width, height, nComps);
-  }
   FXJPEG_Context* p = (FXJPEG_Context*)pContext;
   if (setjmp(p->m_JumpMark) == -1) {
     return 1;
@@ -678,9 +626,6 @@ int CCodec_JpegModule::ReadHeader(void* pContext,
   return 0;
 }
 int CCodec_JpegModule::StartScanline(void* pContext, int down_scale) {
-  if (m_pExtProvider) {
-    return m_pExtProvider->StartScanline(pContext, down_scale);
-  }
   FXJPEG_Context* p = (FXJPEG_Context*)pContext;
   if (setjmp(p->m_JumpMark) == -1) {
     return 0;
@@ -690,9 +635,6 @@ int CCodec_JpegModule::StartScanline(void* pContext, int down_scale) {
 }
 FX_BOOL CCodec_JpegModule::ReadScanline(void* pContext,
                                         unsigned char* dest_buf) {
-  if (m_pExtProvider) {
-    return m_pExtProvider->ReadScanline(pContext, dest_buf);
-  }
   FXJPEG_Context* p = (FXJPEG_Context*)pContext;
   if (setjmp(p->m_JumpMark) == -1) {
     return FALSE;
@@ -702,9 +644,6 @@ FX_BOOL CCodec_JpegModule::ReadScanline(void* pContext,
 }
 FX_DWORD CCodec_JpegModule::GetAvailInput(void* pContext,
                                           uint8_t** avail_buf_ptr) {
-  if (m_pExtProvider) {
-    return m_pExtProvider->GetAvailInput(pContext, avail_buf_ptr);
-  }
   if (avail_buf_ptr != NULL) {
     *avail_buf_ptr = NULL;
     if (((FXJPEG_Context*)pContext)->m_SrcMgr.bytes_in_buffer > 0) {
diff --git a/pdfium.gyp b/pdfium.gyp
index a3275bb86e..67aeade7c4 100644
--- a/pdfium.gyp
+++ b/pdfium.gyp
@@ -334,7 +334,6 @@
         'core/include/fxcodec/fx_codec.h',
         'core/include/fxcodec/fx_codec_def.h',
         'core/include/fxcodec/fx_codec_flate.h',
-        'core/include/fxcodec/fx_codec_provider.h',
         'core/src/fxcodec/codec/codec_int.h',
         'core/src/fxcodec/codec/fx_codec.cpp',
         'core/src/fxcodec/codec/fx_codec_fax.cpp',