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Diffstat (limited to 'src/cnki_jbig.h')
| -rw-r--r-- | src/cnki_jbig.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/cnki_jbig.h b/src/cnki_jbig.h new file mode 100644 index 0000000..96e4ea8 --- /dev/null +++ b/src/cnki_jbig.h @@ -0,0 +1,78 @@ +/* + * Copyright (c) 2020-2021, yzrh <yzrh@noema.org> + * + * SPDX-License-Identifier: Apache-2.0 + */ + +#include <stdint.h> + +/* + * order (MSB first): + * 0 + * 0 + * 0 + * 0 + * HITOLO + * SEQ + * ILEAVE (default) + * SMID (default) + * + * options (MSB first): + * 0 + * LRLTWO + * VLENGTH + * TPDON (default) + * TPBON (default) + * DPON (default) + * DPPRIV + * DPLAST + */ +typedef struct _bih_t { + char d_l; /* Initial resolution layer */ + char d; /* Final resolution layer */ + char p; /* Number of bit-planes, for bi-level image, always 1 */ + char fill; /* Always 0 */ + /* MSB first */ + int32_t x_d; /* Horizontal dimension at highestresolution */ + int32_t y_d; /* Vertical dimension at highest resolution */ + int32_t l_0; /* Number of lines per stripe at lowest resolution */ + char m_x; /* Maximum horizontal offsets (default: 8) */ + char m_y; /* Maximum vertical offsets (default: 0) */ + char order; + char options; + char *dptable; /* 0 or 1728 */ +} bih_t; + +typedef enum _dib_compression_code { + BI_RGB, + BI_RLE8, + BI_RLE4, + BI_BITFIELDS, + BI_JPEG, + BI_PNG, + BI_ALPHABITFIELDS, + BI_CMYK = 11, + BI_CMYKRLE8 = 12, + BI_CMYKRLE4 = 13 +} dib_compression_code; + +typedef struct _dib_t { + uint32_t dib_size; /* Always 40 */ + int32_t width; + int32_t height; + uint16_t plane; /* Always 1 */ + uint16_t depth; + uint32_t compression; /* dib_compression_code */ + uint32_t size; + uint32_t resolution_h; + uint32_t resolution_v; + uint32_t colour; + uint32_t colour_used; +} dib_t; + +typedef struct _colour_table { + uint16_t blue; + uint16_t green; + uint16_t red; + uint16_t fill; /* Always 0 */ +} colour_table; |