Remove external jpeg provider interface.

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 "../../../include/fxcodec/fx_codec.h"
 #include "../../../include/fxcrt/fx_safe_types.h"
@@ skipping 278 matching lines @@
 class CCodec_JpegDecoder : public CCodec_ScanlineDecoder {
  public:
   CCodec_JpegDecoder();
   ~CCodec_JpegDecoder() override;
 
   FX_BOOL Create(const uint8_t* src_buf,
                  FX_DWORD src_size,
                  int width,
                  int height,
                  int nComps,
-                 FX_BOOL ColorTransform,
-                 IFX_JpegProvider* pJP);
+                 FX_BOOL ColorTransform);
   void Destroy() { delete this; }
 
   // CCodec_ScanlineDecoder
   void v_DownScale(int dest_width, int dest_height) override;
   FX_BOOL v_Rewind() override;
   uint8_t* v_GetNextLine() override;
   FX_DWORD GetSrcOffset() override;
 
   FX_BOOL InitDecode();
 
   jmp_buf m_JmpBuf;
   struct jpeg_decompress_struct cinfo;
   struct jpeg_error_mgr jerr;
   struct jpeg_source_mgr src;
   const uint8_t* m_SrcBuf;
   FX_DWORD m_SrcSize;
   uint8_t* m_pScanlineBuf;
 
   FX_BOOL m_bInited;
   FX_BOOL m_bStarted;
   FX_BOOL m_bJpegTransform;
 
  protected:
-  IFX_JpegProvider* m_pExtProvider;
-  void* m_pExtContext;
   FX_DWORD m_nDefaultScaleDenom;
 };
 
 CCodec_JpegDecoder::CCodec_JpegDecoder() {
   m_pScanlineBuf = NULL;
   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);
   }
 }
 FX_BOOL CCodec_JpegDecoder::InitDecode() {
   cinfo.err = &jerr;
   cinfo.client_data = &m_JmpBuf;
   if (setjmp(m_JmpBuf) == -1) {
     return FALSE;
@@ skipping 25 matching lines @@
   m_OutputWidth = m_OrigWidth;
   m_OutputHeight = m_OrigHeight;
   m_nDefaultScaleDenom = cinfo.scale_denom;
   return TRUE;
 }
 FX_BOOL CCodec_JpegDecoder::Create(const uint8_t* src_buf,
                                    FX_DWORD src_size,
                                    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;
   jerr.error_exit = _error_fatal;
   jerr.emit_message = _error_do_nothing1;
   jerr.output_message = _error_do_nothing;
   jerr.format_message = _error_do_nothing2;
   jerr.reset_error_mgr = _error_do_nothing;
   src.init_source = _src_do_nothing;
   src.term_source = _src_do_nothing;
@@ skipping 39 matching lines @@
   if (ratio >= 4) {
     return 4;
   }
   if (ratio >= 2) {
     return 2;
   }
   return 1;
 }
 }
 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);
   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;
   if (old_scale != m_DownScale) {
     m_NextLine = -1;
   }
 }
 FX_BOOL CCodec_JpegDecoder::v_Rewind() {
-  if (m_pExtProvider) {
-    return m_pExtProvider->Rewind(m_pExtContext);
-  }
   if (m_bStarted) {
     jpeg_destroy_decompress(&cinfo);
     if (!InitDecode()) {
       return FALSE;
     }
   }
   if (setjmp(m_JmpBuf) == -1) {
     return FALSE;
   }
   cinfo.scale_denom = m_nDefaultScaleDenom * m_DownScale;
   m_OutputWidth = (m_OrigWidth + m_DownScale - 1) / m_DownScale;
   m_OutputHeight = (m_OrigHeight + m_DownScale - 1) / m_DownScale;
   if (!jpeg_start_decompress(&cinfo)) {
     jpeg_destroy_decompress(&cinfo);
     return FALSE;
   }
   if ((int)cinfo.output_width > m_OrigWidth) {
     FXSYS_assert(FALSE);
     return FALSE;
   }
   m_bStarted = TRUE;
   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;
   }
   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(
     const uint8_t* src_buf,
     FX_DWORD src_size,
     int width,
     int height,
     int nComps,
     FX_BOOL ColorTransform) {
   if (src_buf == NULL || src_size == 0) {
     return NULL;
   }
   CCodec_JpegDecoder* pDecoder = new CCodec_JpegDecoder;
   if (!pDecoder->Create(src_buf, src_size, width, height, nComps,
-                        ColorTransform, m_pExtProvider)) {
+                        ColorTransform)) {
     delete pDecoder;
     return NULL;
   }
   return pDecoder;
 }
 FX_BOOL CCodec_JpegModule::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,
                                     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);
 }
 FX_BOOL CCodec_JpegModule::Encode(const CFX_DIBSource* pSource,
                                   uint8_t*& dest_buf,
                                   FX_STRSIZE& dest_size,
                                   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;
   }
   _JpegEncode(pSource, dest_buf, dest_size, quality, icc_buf, icc_length);
   return TRUE;
 }
 struct FXJPEG_Context {
   jmp_buf m_JumpMark;
   jpeg_decompress_struct m_Info;
@@ skipping 20 matching lines @@
   }
 }
 };
 static void* jpeg_alloc_func(unsigned int size) {
   return FX_Alloc(char, size);
 }
 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;
   p->m_ErrMgr.error_exit = _error_fatal1;
   p->m_ErrMgr.emit_message = _error_do_nothing1;
   p->m_ErrMgr.output_message = _error_do_nothing;
   p->m_ErrMgr.format_message = _error_do_nothing2;
   p->m_ErrMgr.reset_error_mgr = _error_do_nothing;
   p->m_SrcMgr.init_source = _src_do_nothing;
   p->m_SrcMgr.term_source = _src_do_nothing;
   p->m_SrcMgr.skip_input_data = _src_skip_data1;
   p->m_SrcMgr.fill_input_buffer = _src_fill_buffer;
   p->m_SrcMgr.resync_to_restart = _src_resync;
   p->m_Info.client_data = p;
   p->m_Info.err = &p->m_ErrMgr;
   if (setjmp(p->m_JumpMark) == -1) {
     return 0;
   }
   jpeg_create_decompress(&p->m_Info);
   p->m_Info.src = &p->m_SrcMgr;
   p->m_SkipSize = 0;
   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);
 }
 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) {
       p->m_SrcMgr.bytes_in_buffer = 0;
       p->m_SkipSize -= src_size;
       return;
     }
     src_size -= p->m_SkipSize;
     src_buf += p->m_SkipSize;
     p->m_SkipSize = 0;
   }
   p->m_SrcMgr.next_input_byte = src_buf;
   p->m_SrcMgr.bytes_in_buffer = src_size;
 }
 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;
   }
   int ret = jpeg_read_header(&p->m_Info, true);
   if (ret == JPEG_SUSPENDED) {
     return 2;
   }
   if (ret != JPEG_HEADER_OK) {
     return 1;
   }
   *width = p->m_Info.image_width;
   *height = p->m_Info.image_height;
   *nComps = p->m_Info.num_components;
   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;
   }
   p->m_Info.scale_denom = down_scale;
   return jpeg_start_decompress(&p->m_Info);
 }
 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;
   }
   int nlines = jpeg_read_scanlines(&p->m_Info, &dest_buf, 1);
   return nlines == 1;
 }
 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) {
       *avail_buf_ptr =
           (uint8_t*)((FXJPEG_Context*)pContext)->m_SrcMgr.next_input_byte;
     }
   }
   return (FX_DWORD)((FXJPEG_Context*)pContext)->m_SrcMgr.bytes_in_buffer;
 }