Return unique_ptr<>s from fxcodec/

core/fxcodec/codec/fx_codec_fax.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 <memory>
 #include <vector>
 
 #include "core/fxcodec/codec/codec_int.h"
 #include "core/fxcodec/fx_codec.h"
+#include "third_party/base/ptr_util.h"
 
 namespace {
 
 const uint8_t OneLeadPos[256] = {
     8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3,
     3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
     2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1,
     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
     1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ skipping 551 matching lines @@
   int bitpos = *pbitpos;
   for (int iRow = 0; iRow < height; iRow++) {
     uint8_t* line_buf = dest_buf + iRow * pitch;
     FXSYS_memset(line_buf, 0xff, pitch);
     FaxG4GetRow(src_buf, src_size << 3, &bitpos, line_buf, ref_buf, width);
     FXSYS_memcpy(ref_buf.data(), line_buf, pitch);
   }
   *pbitpos = bitpos;
 }
 
-CCodec_ScanlineDecoder* CCodec_FaxModule::CreateDecoder(const uint8_t* src_buf,
-                                                        uint32_t src_size,
-                                                        int width,
-                                                        int height,
-                                                        int K,
-                                                        bool EndOfLine,
-                                                        bool EncodedByteAlign,
-                                                        bool BlackIs1,
-                                                        int Columns,
-                                                        int Rows) {
+std::unique_ptr<CCodec_ScanlineDecoder> CCodec_FaxModule::CreateDecoder(
+    const uint8_t* src_buf,
+    uint32_t src_size,
+    int width,
+    int height,
+    int K,
+    bool EndOfLine,
+    bool EncodedByteAlign,
+    bool BlackIs1,
+    int Columns,
+    int Rows) {
   int actual_width = Columns ? Columns : width;
   int actual_height = Rows ? Rows : height;
 
   // Reject invalid values.
   if (actual_width <= 0 || actual_height <= 0)
     return nullptr;
 
   // Reject unreasonable large input.
   if (actual_width > kMaxImageDimension || actual_height > kMaxImageDimension)
     return nullptr;
 
   uint32_t pitch = (static_cast<uint32_t>(actual_width) + 31) / 32 * 4;
-  return new CCodec_FaxDecoder(src_buf, src_size, actual_width, actual_height,
-                               pitch, K, EndOfLine, EncodedByteAlign, BlackIs1);
+  return pdfium::MakeUnique<CCodec_FaxDecoder>(
+      src_buf, src_size, actual_width, actual_height, pitch, K, EndOfLine,
+      EncodedByteAlign, BlackIs1);
 }