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74961773ab
This patch moves them into less exposed places. It also moves the RLE_* constants into the RLE enum, and renames ColorTable and its fields.
85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_image_BMPFileHeaders_h
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#define mozilla_image_BMPFileHeaders_h
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#include <stddef.h>
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#include <stdint.h>
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namespace mozilla {
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namespace image {
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namespace bmp {
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// This length is stored in the |bihsize| field of bmp::FileHeader.
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struct InfoHeaderLength {
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enum {
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WIN_V2 = 12,
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WIN_V3 = 40,
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WIN_V4 = 108,
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WIN_V5 = 124,
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// OS2_V1 is omitted; it's the same as WIN_V2.
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OS2_V2_MIN = 16, // Minimum allowed value for OS2v2.
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OS2_V2_MAX = 64, // Maximum allowed value for OS2v2.
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};
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};
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struct FileHeader {
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char signature[2]; // String "BM".
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uint32_t filesize; // File size; unreliable in practice.
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int32_t reserved; // Zero.
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uint32_t dataoffset; // Offset to raster data.
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// The length of the file header as defined in the BMP spec.
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static const size_t LENGTH = 14;
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};
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struct XYZ {
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int32_t x, y, z;
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};
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struct XYZTriple {
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XYZ r, g, b;
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};
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struct V5InfoHeader {
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uint32_t bihsize; // Header size
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int32_t width; // Uint16 in OS/2 BMPs
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int32_t height; // Uint16 in OS/2 BMPs
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uint16_t planes; // =1
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uint16_t bpp; // Bits per pixel.
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// The rest of the header is not available in WIN_V2/OS2_V1 BMP Files
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uint32_t compression; // See Compression for valid values
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uint32_t image_size; // (compressed) image size. Can be 0 if
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// compression==0
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uint32_t xppm; // Pixels per meter, horizontal
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uint32_t yppm; // Pixels per meter, vertical
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uint32_t colors; // Used Colors
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uint32_t important_colors; // Number of important colors. 0=all
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uint32_t red_mask; // Bits used for red component
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uint32_t green_mask; // Bits used for green component
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uint32_t blue_mask; // Bits used for blue component
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uint32_t alpha_mask; // Bits used for alpha component
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uint32_t color_space; // 0x73524742=LCS_sRGB ...
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// These members are unused unless color_space == LCS_CALIBRATED_RGB
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XYZTriple white_point; // Logical white point
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uint32_t gamma_red; // Red gamma component
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uint32_t gamma_green; // Green gamma component
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uint32_t gamma_blue; // Blue gamma component
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uint32_t intent; // Rendering intent
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// These members are unused unless color_space == LCS_PROFILE_*
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uint32_t profile_offset; // Offset to profile data in bytes
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uint32_t profile_size; // Size of profile data in bytes
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uint32_t reserved; // =0
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static const uint32_t COLOR_SPACE_LCS_SRGB = 0x73524742;
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};
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} // namespace bmp
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} // namespace image
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} // namespace mozilla
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#endif // mozilla_image_BMPFileHeaders_h
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