Extract classes in fx_bmp.h into their own files

BUG=chromium:808336

Change-Id: I3201805a374b5403149eca701714ef4369a2e337
Reviewed-on: https://pdfium-review.googlesource.com/25630
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>

1 files changed, 76 insertions, 0 deletions

diff --git a/core/fxcodec/bmp/cfx_bmpdecompressor.h b/core/fxcodec/bmp/cfx_bmpdecompressor.h
new file mode 100644
index 0000000000..499d559637
--- /dev/null
+++ b/core/fxcodec/bmp/cfx_bmpdecompressor.h
@@ -0,0 +1,76 @@
+// Copyright 2018 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_FXCODEC_BMP_CFX_BMPDECOMPRESSOR_H_
+#define CORE_FXCODEC_BMP_CFX_BMPDECOMPRESSOR_H_
+
+#include "core/fxcodec/bmp/fx_bmp.h"
+
+#include <setjmp.h>
+
+#include <memory>
+#include <vector>
+
+class CFX_BmpDecompressor {
+ public:
+  CFX_BmpDecompressor();
+  ~CFX_BmpDecompressor();
+
+  void Error();
+  int32_t DecodeImage();
+  int32_t ReadHeader();
+  void SetInputBuffer(uint8_t* src_buf, uint32_t src_size);
+  uint32_t GetAvailInput(uint8_t** avail_buf);
+
+  jmp_buf jmpbuf_;
+
+  void* context_ptr_;
+
+  std::vector<uint8_t> out_row_buffer_;
+  std::vector<uint32_t> palette_;
+  uint8_t* next_in_;
+
+  uint32_t header_offset_;
+  uint32_t width_;
+  uint32_t height_;
+  uint32_t compress_flag_;
+  int32_t components_;
+  size_t src_row_bytes_;
+  size_t out_row_bytes_;
+  uint16_t bit_counts_;
+  uint32_t color_used_;
+  bool imgTB_flag_;
+  int32_t pal_num_;
+  int32_t pal_type_;
+  uint32_t data_size_;
+  uint32_t img_data_offset_;
+  uint32_t img_ifh_size_;
+  size_t row_num_;
+  size_t col_num_;
+  int32_t dpi_x_;
+  int32_t dpi_y_;
+  uint32_t mask_red_;
+  uint32_t mask_green_;
+  uint32_t mask_blue_;
+
+  uint32_t avail_in_;
+  uint32_t skip_size_;
+  int32_t decode_status_;
+
+ private:
+  bool GetDataPosition(uint32_t cur_pos);
+  void ReadScanline(uint32_t row_num, const std::vector<uint8_t>& row_buf);
+  int32_t DecodeRGB();
+  int32_t DecodeRLE8();
+  int32_t DecodeRLE4();
+  uint8_t* ReadData(uint8_t** des_buf, uint32_t data_size);
+  void SaveDecodingStatus(int32_t status);
+  bool ValidateColorIndex(uint8_t val);
+  bool ValidateFlag() const;
+  void SetHeight(int32_t signed_height);
+};
+
+#endif  // CORE_FXCODEC_BMP_CFX_BMPDECOMPRESSOR_H_