1 files changed, 136 insertions, 0 deletions
diff --git a/core/fxcodec/bmp/fx_bmp.h b/core/fxcodec/bmp/fx_bmp.h
new file mode 100644
index 0000000000..4033e510a6
--- /dev/null
+++ b/core/fxcodec/bmp/fx_bmp.h
@@ -0,0 +1,136 @@
+// 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_FXCODEC_BMP_FX_BMP_H_
+#define CORE_FXCODEC_BMP_FX_BMP_H_
+
+#include <setjmp.h>
+
+#include <memory>
+#include <vector>
+
+#include "core/fxcodec/codec/ccodec_bmpmodule.h"
+
+#define BMP_WIDTHBYTES(width, bitCount) ((width * bitCount) + 31) / 32 * 4
+#define BMP_PAL_ENCODE(a, r, g, b) \
+  (((uint32_t)(a) << 24) | ((r) << 16) | ((g) << 8) | (b))
+#define BMP_D_STATUS_HEADER 0x01
+#define BMP_D_STATUS_PAL 0x02
+#define BMP_D_STATUS_DATA_PRE 0x03
+#define BMP_D_STATUS_DATA 0x04
+#define BMP_D_STATUS_TAIL 0x00
+#define BMP_SIGNATURE 0x4D42
+#define BMP_PAL_OLD 1
+#define RLE_MARKER 0
+#define RLE_EOL 0
+#define RLE_EOI 1
+#define RLE_DELTA 2
+#define BMP_RGB 0L
+#define BMP_RLE8 1L
+#define BMP_RLE4 2L
+#define BMP_BITFIELDS 3L
+// Limit width to (MAXINT32 - 31) / 32
+#define BMP_MAX_WIDTH 67108863
+#pragma pack(1)
+typedef struct tagBmpFileHeader {
+  uint16_t bfType;
+  uint32_t bfSize;
+  uint16_t bfReserved1;
+  uint16_t bfReserved2;
+  uint32_t bfOffBits;
+} BmpFileHeader;
+typedef struct tagBmpCoreHeader {
+  uint32_t bcSize;
+  uint16_t bcWidth;
+  uint16_t bcHeight;
+  uint16_t bcPlanes;
+  uint16_t bcBitCount;
+} BmpCoreHeader;
+typedef struct tagBmpInfoHeader {
+  uint32_t biSize;
+  int32_t biWidth;
+  int32_t biHeight;
+  uint16_t biPlanes;
+  uint16_t biBitCount;
+  uint32_t biCompression;
+  uint32_t biSizeImage;
+  int32_t biXPelsPerMeter;
+  int32_t biYPelsPerMeter;
+  uint32_t biClrUsed;
+  uint32_t biClrImportant;
+} BmpInfoHeader;
+#pragma pack()
+
+class BMPDecompressor {
+ public:
+  BMPDecompressor();
+  ~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);
+};
+
+class CBmpContext : public CCodec_BmpModule::Context {
+ public:
+  CBmpContext(CCodec_BmpModule* pModule, CCodec_BmpModule::Delegate* pDelegate);
+  ~CBmpContext() override;
+
+  BMPDecompressor m_Bmp;
+  UnownedPtr<CCodec_BmpModule> const m_pModule;
+  UnownedPtr<CCodec_BmpModule::Delegate> const m_pDelegate;
+};
+
+#endif  // CORE_FXCODEC_BMP_FX_BMP_H_