mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
145 lines
4.5 KiB
C++
145 lines
4.5 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef mozilla_image_BMPFileHeaders_h
|
|
#define mozilla_image_BMPFileHeaders_h
|
|
|
|
namespace mozilla {
|
|
namespace image {
|
|
|
|
struct BMPFILEHEADER {
|
|
char signature[2]; // String "BM"
|
|
uint32_t filesize;
|
|
int32_t reserved; // Zero
|
|
uint32_t dataoffset; // Offset to raster data
|
|
|
|
uint32_t bihsize;
|
|
};
|
|
|
|
// The length of the bitmap file header as defined in the BMP spec.
|
|
#define BFH_LENGTH 14
|
|
// Internally we store the bitmap file header with an additional 4 bytes which
|
|
// is used to store the bitmap information header size.
|
|
#define BFH_INTERNAL_LENGTH 18
|
|
|
|
#define OS2_INTERNAL_BIH_LENGTH 8
|
|
#define WIN_V3_INTERNAL_BIH_LENGTH 36
|
|
#define WIN_V5_INTERNAL_BIH_LENGTH 120
|
|
|
|
#define OS2_BIH_LENGTH 12 // This is the real BIH size (as contained in the
|
|
// bihsize field of BMPFILEHEADER)
|
|
#define WIN_V3_BIH_LENGTH 40 // This is the real BIH size (as contained in the
|
|
// bihsize field of BMPFILEHEADER)
|
|
#define WIN_V5_BIH_LENGTH 124 // This is the real BIH size (as contained in the
|
|
// bihsize field of BMPFILEHEADER)
|
|
|
|
#define OS2_HEADER_LENGTH (BFH_INTERNAL_LENGTH + OS2_INTERNAL_BIH_LENGTH)
|
|
#define WIN_V3_HEADER_LENGTH (BFH_INTERNAL_LENGTH + WIN_V3_INTERNAL_BIH_LENGTH)
|
|
#define WIN_V5_HEADER_LENGTH (BFH_INTERNAL_LENGTH + WIN_V5_INTERNAL_BIH_LENGTH)
|
|
|
|
#ifndef LCS_sRGB
|
|
#define LCS_sRGB 0x73524742
|
|
#endif
|
|
|
|
struct xyz {
|
|
int32_t x, y, z;
|
|
};
|
|
|
|
struct xyzTriple {
|
|
xyz r, g, b;
|
|
};
|
|
|
|
struct BITMAPV5HEADER {
|
|
int32_t width; // Uint16 in OS/2 BMPs
|
|
int32_t height; // Uint16 in OS/2 BMPs
|
|
uint16_t planes; // =1
|
|
uint16_t bpp; // Bits per pixel.
|
|
// The rest of the header is not available in OS/2 BMP Files
|
|
uint32_t compression; // 0=no compression 1=8bit RLE 2=4bit RLE
|
|
uint32_t image_size; // (compressed) image size. Can be 0 if
|
|
// compression==0
|
|
uint32_t xppm; // Pixels per meter, horizontal
|
|
uint32_t yppm; // Pixels per meter, vertical
|
|
uint32_t colors; // Used Colors
|
|
uint32_t important_colors; // Number of important colors. 0=all
|
|
uint32_t red_mask; // Bits used for red component
|
|
uint32_t green_mask; // Bits used for green component
|
|
uint32_t blue_mask; // Bits used for blue component
|
|
uint32_t alpha_mask; // Bits used for alpha component
|
|
uint32_t color_space; // 0x73524742=LCS_sRGB ...
|
|
// These members are unused unless color_space == LCS_CALIBRATED_RGB
|
|
xyzTriple white_point; // Logical white point
|
|
uint32_t gamma_red; // Red gamma component
|
|
uint32_t gamma_green; // Green gamma component
|
|
uint32_t gamma_blue; // Blue gamma component
|
|
uint32_t intent; // Rendering intent
|
|
// These members are unused unless color_space == LCS_PROFILE_*
|
|
uint32_t profile_offset; // Offset to profile data in bytes
|
|
uint32_t profile_size; // Size of profile data in bytes
|
|
uint32_t reserved; // =0
|
|
};
|
|
|
|
struct colorTable {
|
|
uint8_t red;
|
|
uint8_t green;
|
|
uint8_t blue;
|
|
};
|
|
|
|
struct bitFields {
|
|
uint32_t red;
|
|
uint32_t green;
|
|
uint32_t blue;
|
|
uint8_t redLeftShift;
|
|
uint8_t redRightShift;
|
|
uint8_t greenLeftShift;
|
|
uint8_t greenRightShift;
|
|
uint8_t blueLeftShift;
|
|
uint8_t blueRightShift;
|
|
};
|
|
|
|
} // namespace image
|
|
} // namespace mozilla
|
|
|
|
#define BITFIELD_LENGTH 12 // Length of the bitfields structure in the bmp file
|
|
#define USE_RGB
|
|
|
|
// BMPINFOHEADER.compression defines
|
|
#ifndef BI_RGB
|
|
#define BI_RGB 0
|
|
#endif
|
|
#ifndef BI_RLE8
|
|
#define BI_RLE8 1
|
|
#endif
|
|
#ifndef BI_RLE4
|
|
#define BI_RLE4 2
|
|
#endif
|
|
#ifndef BI_BITFIELDS
|
|
#define BI_BITFIELDS 3
|
|
#endif
|
|
// BI_ALPHABITFIELDS means no compression and specifies alpha bits
|
|
// valid only for 32bpp and 16bpp
|
|
#ifndef BI_ALPHABITFIELDS
|
|
#define BI_ALPHABITFIELDS 4
|
|
#endif
|
|
|
|
// RLE Escape codes
|
|
#define RLE_ESCAPE 0
|
|
#define RLE_ESCAPE_EOL 0
|
|
#define RLE_ESCAPE_EOF 1
|
|
#define RLE_ESCAPE_DELTA 2
|
|
|
|
/// enums for mState
|
|
enum ERLEState {
|
|
eRLEStateInitial,
|
|
eRLEStateNeedSecondEscapeByte,
|
|
eRLEStateNeedXDelta,
|
|
eRLEStateNeedYDelta, ///< mStateData will hold x delta
|
|
eRLEStateAbsoluteMode, ///< mStateData will hold count of existing data
|
|
///< to read
|
|
eRLEStateAbsoluteModePadded ///< As above, but another byte of data has to
|
|
///< be read as padding
|
|
};
|
|
|
|
#endif // mozilla_image_BMPFileHeaders_h
|