Move core/src/ up to core/.

This CL moves the core/src/ files up to core/ and fixes up the include guards,
includes and build files.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1800523005 .

1 files changed, 487 insertions, 0 deletions

diff --git a/core/fxcodec/codec/fx_codec.cpp b/core/fxcodec/codec/fx_codec.cpp
new file mode 100644
index 0000000000..f1298f9fb3
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec.cpp
@@ -0,0 +1,487 @@
+// 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 "core/include/fxcodec/fx_codec.h"
+
+#include <cmath>
+#include <utility>
+
+#include "core/fxcodec/codec/codec_int.h"
+#include "core/include/fxcrt/fx_ext.h"
+#include "core/include/fxcrt/fx_safe_types.h"
+#include "third_party/base/logging.h"
+
+CCodec_ModuleMgr::CCodec_ModuleMgr()
+    : m_pBasicModule(new CCodec_BasicModule),
+      m_pFaxModule(new CCodec_FaxModule),
+      m_pJpegModule(new CCodec_JpegModule),
+      m_pJpxModule(new CCodec_JpxModule),
+      m_pJbig2Module(new CCodec_Jbig2Module),
+      m_pIccModule(new CCodec_IccModule),
+#ifdef PDF_ENABLE_XFA
+      m_pPngModule(new CCodec_PngModule),
+      m_pGifModule(new CCodec_GifModule),
+      m_pBmpModule(new CCodec_BmpModule),
+      m_pTiffModule(new CCodec_TiffModule),
+#endif  // PDF_ENABLE_XFA
+      m_pFlateModule(new CCodec_FlateModule) {
+}
+
+CCodec_ScanlineDecoder::ImageDataCache::ImageDataCache(int width,
+                                                       int height,
+                                                       FX_DWORD pitch)
+    : m_Width(width), m_Height(height), m_Pitch(pitch), m_nCachedLines(0) {}
+
+CCodec_ScanlineDecoder::ImageDataCache::~ImageDataCache() {}
+
+bool CCodec_ScanlineDecoder::ImageDataCache::AllocateCache() {
+  if (m_Pitch == 0 || m_Height < 0)
+    return false;
+
+  FX_SAFE_SIZE_T size = m_Pitch;
+  size *= m_Height;
+  if (!size.IsValid())
+    return false;
+
+  m_Data.reset(FX_TryAlloc(uint8_t, size.ValueOrDie()));
+  return IsValid();
+}
+
+void CCodec_ScanlineDecoder::ImageDataCache::AppendLine(const uint8_t* line) {
+  // If the callers adds more lines than there is room, fail.
+  if (m_Pitch == 0 || m_nCachedLines >= m_Height) {
+    NOTREACHED();
+    return;
+  }
+
+  size_t offset = m_Pitch;
+  FXSYS_memcpy(m_Data.get() + offset * m_nCachedLines, line, m_Pitch);
+  ++m_nCachedLines;
+}
+
+const uint8_t* CCodec_ScanlineDecoder::ImageDataCache::GetLine(int line) const {
+  if (m_Pitch == 0 || line < 0 || line >= m_nCachedLines)
+    return nullptr;
+
+  size_t offset = m_Pitch;
+  return m_Data.get() + offset * line;
+}
+
+CCodec_ScanlineDecoder::CCodec_ScanlineDecoder()
+    : m_NextLine(-1), m_pLastScanline(nullptr) {}
+
+CCodec_ScanlineDecoder::~CCodec_ScanlineDecoder() {}
+
+const uint8_t* CCodec_ScanlineDecoder::GetScanline(int line) {
+  if (m_pDataCache && line < m_pDataCache->NumLines())
+    return m_pDataCache->GetLine(line);
+
+  if (m_NextLine == line + 1)
+    return m_pLastScanline;
+
+  if (m_NextLine < 0 || m_NextLine > line) {
+    if (!v_Rewind())
+      return nullptr;
+    m_NextLine = 0;
+  }
+  while (m_NextLine < line) {
+    ReadNextLine();
+    m_NextLine++;
+  }
+  m_pLastScanline = ReadNextLine();
+  m_NextLine++;
+  return m_pLastScanline;
+}
+
+FX_BOOL CCodec_ScanlineDecoder::SkipToScanline(int line, IFX_Pause* pPause) {
+  if (m_pDataCache && line < m_pDataCache->NumLines())
+    return FALSE;
+
+  if (m_NextLine == line || m_NextLine == line + 1)
+    return FALSE;
+
+  if (m_NextLine < 0 || m_NextLine > line) {
+    v_Rewind();
+    m_NextLine = 0;
+  }
+  m_pLastScanline = nullptr;
+  while (m_NextLine < line) {
+    m_pLastScanline = ReadNextLine();
+    m_NextLine++;
+    if (pPause && pPause->NeedToPauseNow()) {
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+uint8_t* CCodec_ScanlineDecoder::ReadNextLine() {
+  uint8_t* pLine = v_GetNextLine();
+  if (!pLine)
+    return nullptr;
+
+  if (m_pDataCache && m_NextLine == m_pDataCache->NumLines())
+    m_pDataCache->AppendLine(pLine);
+  return pLine;
+}
+
+void CCodec_ScanlineDecoder::DownScale(int dest_width, int dest_height) {
+  dest_width = std::abs(dest_width);
+  dest_height = std::abs(dest_height);
+  v_DownScale(dest_width, dest_height);
+
+  if (m_pDataCache &&
+      m_pDataCache->IsSameDimensions(m_OutputWidth, m_OutputHeight)) {
+    return;
+  }
+
+  std::unique_ptr<ImageDataCache> cache(
+      new ImageDataCache(m_OutputWidth, m_OutputHeight, m_Pitch));
+  if (!cache->AllocateCache())
+    return;
+
+  m_pDataCache = std::move(cache);
+}
+
+FX_BOOL CCodec_BasicModule::RunLengthEncode(const uint8_t* src_buf,
+                                            FX_DWORD src_size,
+                                            uint8_t*& dest_buf,
+                                            FX_DWORD& dest_size) {
+  return FALSE;
+}
+
+#define EXPONENT_DETECT(ptr)                 \
+  for (;; ptr++) {                           \
+    if (!std::isdigit(*ptr)) {               \
+      if (endptr)                            \
+        *endptr = (char*)ptr;                \
+      break;                                 \
+    } else {                                 \
+      exp_ret *= 10;                         \
+      exp_ret += FXSYS_toDecimalDigit(*ptr); \
+      continue;                              \
+    }                                        \
+  }
+
+extern "C" double FXstrtod(const char* nptr, char** endptr) {
+  double ret = 0.0;
+  const char* ptr = nptr;
+  const char* exp_ptr = NULL;
+  int e_number = 0, e_signal = 0, e_point = 0, is_negative = 0;
+  int exp_ret = 0, exp_sig = 1, fra_ret = 0, fra_count = 0, fra_base = 1;
+  if (!nptr) {
+    return 0.0;
+  }
+  for (;; ptr++) {
+    if (!e_number && !e_point && (*ptr == '\t' || *ptr == ' '))
+      continue;
+
+    if (std::isdigit(*ptr)) {
+      if (!e_number)
+        e_number = 1;
+
+      if (!e_point) {
+        ret *= 10;
+        ret += FXSYS_toDecimalDigit(*ptr);
+      } else {
+        fra_count++;
+        fra_ret *= 10;
+        fra_ret += FXSYS_toDecimalDigit(*ptr);
+      }
+      continue;
+    }
+    if (!e_point && *ptr == '.') {
+      e_point = 1;
+      continue;
+    }
+    if (!e_number && !e_point && !e_signal) {
+      switch (*ptr) {
+        case '-':
+          is_negative = 1;
+        case '+':
+          e_signal = 1;
+          continue;
+      }
+    }
+    if (e_number && (*ptr == 'e' || *ptr == 'E')) {
+      exp_ptr = ptr++;
+      if (*ptr == '+' || *ptr == '-') {
+        exp_sig = (*ptr++ == '+') ? 1 : -1;
+        if (!std::isdigit(*ptr)) {
+          if (endptr) {
+            *endptr = (char*)exp_ptr;
+          }
+          break;
+        }
+        EXPONENT_DETECT(ptr);
+      } else if (std::isdigit(*ptr)) {
+        EXPONENT_DETECT(ptr);
+      } else {
+        if (endptr) {
+          *endptr = (char*)exp_ptr;
+        }
+        break;
+      }
+      break;
+    }
+    if (ptr != nptr && !e_number) {
+      if (endptr) {
+        *endptr = (char*)nptr;
+      }
+      break;
+    }
+    if (endptr) {
+      *endptr = (char*)ptr;
+    }
+    break;
+  }
+  while (fra_count--) {
+    fra_base *= 10;
+  }
+  ret += (double)fra_ret / (double)fra_base;
+  if (exp_sig == 1) {
+    while (exp_ret--) {
+      ret *= 10.0;
+    }
+  } else {
+    while (exp_ret--) {
+      ret /= 10.0;
+    }
+  }
+  return is_negative ? -ret : ret;
+}
+#undef EXPONENT_DETECT
+
+FX_BOOL CCodec_BasicModule::A85Encode(const uint8_t* src_buf,
+                                      FX_DWORD src_size,
+                                      uint8_t*& dest_buf,
+                                      FX_DWORD& dest_size) {
+  return FALSE;
+}
+
+#ifdef PDF_ENABLE_XFA
+CFX_DIBAttribute::CFX_DIBAttribute()
+    : m_nXDPI(-1),
+      m_nYDPI(-1),
+      m_fAspectRatio(-1.0f),
+      m_wDPIUnit(0),
+      m_nGifLeft(0),
+      m_nGifTop(0),
+      m_pGifLocalPalette(nullptr),
+      m_nGifLocalPalNum(0),
+      m_nBmpCompressType(0) {
+  FXSYS_memset(m_strTime, 0, sizeof(m_strTime));
+}
+CFX_DIBAttribute::~CFX_DIBAttribute() {
+  for (const auto& pair : m_Exif)
+    FX_Free(pair.second);
+}
+#endif  // PDF_ENABLE_XFA
+
+class CCodec_RLScanlineDecoder : public CCodec_ScanlineDecoder {
+ public:
+  CCodec_RLScanlineDecoder();
+  ~CCodec_RLScanlineDecoder() override;
+
+  FX_BOOL Create(const uint8_t* src_buf,
+                 FX_DWORD src_size,
+                 int width,
+                 int height,
+                 int nComps,
+                 int bpc);
+
+  // 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 { return m_SrcOffset; }
+
+ protected:
+  FX_BOOL CheckDestSize();
+  void GetNextOperator();
+  void UpdateOperator(uint8_t used_bytes);
+
+  uint8_t* m_pScanline;
+  const uint8_t* m_pSrcBuf;
+  FX_DWORD m_SrcSize;
+  FX_DWORD m_dwLineBytes;
+  FX_DWORD m_SrcOffset;
+  FX_BOOL m_bEOD;
+  uint8_t m_Operator;
+};
+CCodec_RLScanlineDecoder::CCodec_RLScanlineDecoder()
+    : m_pScanline(NULL),
+      m_pSrcBuf(NULL),
+      m_SrcSize(0),
+      m_dwLineBytes(0),
+      m_SrcOffset(0),
+      m_bEOD(FALSE),
+      m_Operator(0) {}
+CCodec_RLScanlineDecoder::~CCodec_RLScanlineDecoder() {
+  FX_Free(m_pScanline);
+}
+FX_BOOL CCodec_RLScanlineDecoder::CheckDestSize() {
+  FX_DWORD i = 0;
+  FX_DWORD old_size = 0;
+  FX_DWORD dest_size = 0;
+  while (i < m_SrcSize) {
+    if (m_pSrcBuf[i] < 128) {
+      old_size = dest_size;
+      dest_size += m_pSrcBuf[i] + 1;
+      if (dest_size < old_size) {
+        return FALSE;
+      }
+      i += m_pSrcBuf[i] + 2;
+    } else if (m_pSrcBuf[i] > 128) {
+      old_size = dest_size;
+      dest_size += 257 - m_pSrcBuf[i];
+      if (dest_size < old_size) {
+        return FALSE;
+      }
+      i += 2;
+    } else {
+      break;
+    }
+  }
+  if (((FX_DWORD)m_OrigWidth * m_nComps * m_bpc * m_OrigHeight + 7) / 8 >
+      dest_size) {
+    return FALSE;
+  }
+  return TRUE;
+}
+FX_BOOL CCodec_RLScanlineDecoder::Create(const uint8_t* src_buf,
+                                         FX_DWORD src_size,
+                                         int width,
+                                         int height,
+                                         int nComps,
+                                         int bpc) {
+  m_pSrcBuf = src_buf;
+  m_SrcSize = src_size;
+  m_OutputWidth = m_OrigWidth = width;
+  m_OutputHeight = m_OrigHeight = height;
+  m_nComps = nComps;
+  m_bpc = bpc;
+  m_bColorTransformed = FALSE;
+  m_DownScale = 1;
+  // Aligning the pitch to 4 bytes requires an integer overflow check.
+  FX_SAFE_DWORD pitch = width;
+  pitch *= nComps;
+  pitch *= bpc;
+  pitch += 31;
+  pitch /= 32;
+  pitch *= 4;
+  if (!pitch.IsValid()) {
+    return FALSE;
+  }
+  m_Pitch = pitch.ValueOrDie();
+  // Overflow should already have been checked before this is called.
+  m_dwLineBytes = (static_cast<FX_DWORD>(width) * nComps * bpc + 7) / 8;
+  m_pScanline = FX_Alloc(uint8_t, m_Pitch);
+  return CheckDestSize();
+}
+FX_BOOL CCodec_RLScanlineDecoder::v_Rewind() {
+  FXSYS_memset(m_pScanline, 0, m_Pitch);
+  m_SrcOffset = 0;
+  m_bEOD = FALSE;
+  m_Operator = 0;
+  return TRUE;
+}
+uint8_t* CCodec_RLScanlineDecoder::v_GetNextLine() {
+  if (m_SrcOffset == 0) {
+    GetNextOperator();
+  } else {
+    if (m_bEOD) {
+      return NULL;
+    }
+  }
+  FXSYS_memset(m_pScanline, 0, m_Pitch);
+  FX_DWORD col_pos = 0;
+  FX_BOOL eol = FALSE;
+  while (m_SrcOffset < m_SrcSize && !eol) {
+    if (m_Operator < 128) {
+      FX_DWORD copy_len = m_Operator + 1;
+      if (col_pos + copy_len >= m_dwLineBytes) {
+        copy_len = m_dwLineBytes - col_pos;
+        eol = TRUE;
+      }
+      if (copy_len >= m_SrcSize - m_SrcOffset) {
+        copy_len = m_SrcSize - m_SrcOffset;
+        m_bEOD = TRUE;
+      }
+      FXSYS_memcpy(m_pScanline + col_pos, m_pSrcBuf + m_SrcOffset, copy_len);
+      col_pos += copy_len;
+      UpdateOperator((uint8_t)copy_len);
+    } else if (m_Operator > 128) {
+      int fill = 0;
+      if (m_SrcOffset - 1 < m_SrcSize - 1) {
+        fill = m_pSrcBuf[m_SrcOffset];
+      }
+      FX_DWORD duplicate_len = 257 - m_Operator;
+      if (col_pos + duplicate_len >= m_dwLineBytes) {
+        duplicate_len = m_dwLineBytes - col_pos;
+        eol = TRUE;
+      }
+      FXSYS_memset(m_pScanline + col_pos, fill, duplicate_len);
+      col_pos += duplicate_len;
+      UpdateOperator((uint8_t)duplicate_len);
+    } else {
+      m_bEOD = TRUE;
+      break;
+    }
+  }
+  return m_pScanline;
+}
+void CCodec_RLScanlineDecoder::GetNextOperator() {
+  if (m_SrcOffset >= m_SrcSize) {
+    m_Operator = 128;
+    return;
+  }
+  m_Operator = m_pSrcBuf[m_SrcOffset];
+  m_SrcOffset++;
+}
+void CCodec_RLScanlineDecoder::UpdateOperator(uint8_t used_bytes) {
+  if (used_bytes == 0) {
+    return;
+  }
+  if (m_Operator < 128) {
+    FXSYS_assert((FX_DWORD)m_Operator + 1 >= used_bytes);
+    if (used_bytes == m_Operator + 1) {
+      m_SrcOffset += used_bytes;
+      GetNextOperator();
+      return;
+    }
+    m_Operator -= used_bytes;
+    m_SrcOffset += used_bytes;
+    if (m_SrcOffset >= m_SrcSize) {
+      m_Operator = 128;
+    }
+    return;
+  }
+  uint8_t count = 257 - m_Operator;
+  FXSYS_assert((FX_DWORD)count >= used_bytes);
+  if (used_bytes == count) {
+    m_SrcOffset++;
+    GetNextOperator();
+    return;
+  }
+  count -= used_bytes;
+  m_Operator = 257 - count;
+}
+ICodec_ScanlineDecoder* CCodec_BasicModule::CreateRunLengthDecoder(
+    const uint8_t* src_buf,
+    FX_DWORD src_size,
+    int width,
+    int height,
+    int nComps,
+    int bpc) {
+  CCodec_RLScanlineDecoder* pRLScanlineDecoder = new CCodec_RLScanlineDecoder;
+  if (!pRLScanlineDecoder->Create(src_buf, src_size, width, height, nComps,
+                                  bpc)) {
+    delete pRLScanlineDecoder;
+    return NULL;
+  }
+  return pRLScanlineDecoder;
+}