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50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/**
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* Bit buffer
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*
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* A two-dimensional bit buffer consisting of bytes
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*
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* Copyright (C) 2015 Tommy Vestermark
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef INCLUDE_BITBUFFER_H_
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#define INCLUDE_BITBUFFER_H_
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#include <stdint.h>
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#define BITBUF_COLS 80 // Number of bytes in a column
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#define BITBUF_ROWS 25
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#define BITBUF_MAX_PRINT_BITS 50 // Maximum number of bits to print (in addition to hex values)
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typedef uint8_t bitrow_t[BITBUF_COLS];
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typedef bitrow_t bitarray_t[BITBUF_ROWS];
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/// Bit buffer
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typedef struct {
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uint16_t num_rows; // Number of active rows
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uint16_t bits_per_row[BITBUF_ROWS]; // Number of active bits per row
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bitarray_t bb; // The actual bits buffer
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} bitbuffer_t;
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/// Clear the content of the bitbuffer
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void bitbuffer_clear(bitbuffer_t *bits);
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/// Add a single bit at the end of the bitbuffer (MSB first)
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void bitbuffer_add_bit(bitbuffer_t *bits, int bit);
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/// Add a new row to the bitbuffer
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void bitbuffer_add_row(bitbuffer_t *bits);
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/// Invert all bits in the bitbuffer (do not invert the empty bits)
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//void bitbuffer_invert(bitbuffer_t *bits);
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/// Print the content of the bitbuffer
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void bitbuffer_print(const bitbuffer_t *bits);
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#endif /* INCLUDE_BITBUFFER_H_ */
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