32ec828835
This gives a much clearer overview of the licensing. It also shows there are some problems: - Some files are under GPLv3 only - Some files have no known license at all.
80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/* vim:expandtab:ts=2 sw=2:
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*/
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/* Grafx2 - The Ultimate 256-color bitmap paint program
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Copyright owned by various GrafX2 authors, see COPYRIGHT.txt for details.
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Grafx2 is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2
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of the License.
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Grafx2 is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Grafx2; if not, see <http://www.gnu.org/licenses/>
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*/
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///@file packbits.h
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/// Packbits compression as used in IFF etc.
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#ifndef PACKBITS_H_INCLUDED
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#define PACKBITS_H_INCLUDED
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// error codes :
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#define PACKBITS_UNPACK_OK 0
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#define PACKBITS_UNPACK_READ_ERROR -1
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#define PACKBITS_UNPACK_OVERFLOW_ERROR -2
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/**
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* @return PACKBITS_UNPACK_OK or PACKBITS_UNPACK_READ_ERROR or PACKBITS_UNPACK_OVERFLOW_ERROR
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*/
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int PackBits_unpack_from_file(FILE * f, byte * dest, unsigned int count);
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/**
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* Data used by the PackBits packer
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*/
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typedef struct {
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FILE * f;
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int output_count;
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byte list_size;
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byte repetition_mode;
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byte list[129];
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} T_PackBits_data;
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/**
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* init before packing
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*
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* @param data storage for packbits data
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* @param f FILE output or NULL (for no output)
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*/
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void PackBits_pack_init(T_PackBits_data * data, FILE * f);
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/**
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* Add a byte to the packbits stream
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* @return -1 for error, 0 if OK
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*/
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int PackBits_pack_add(T_PackBits_data * data, byte b);
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/**
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* Flush the packed data to the file
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*
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* @return -1 for error, or the size of the packed stream so far
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*/
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int PackBits_pack_flush(T_PackBits_data * data);
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/**
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* Pack a full buffer to FILE
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* @param f FILE output or NULL (for no output)
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* @param buffer input buffer
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* @param size byte size of input buffer
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* @return -1 for error, or the size of the packed stream so far
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*/
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int PackBits_pack_buffer(FILE * f, const byte * buffer, size_t size);
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#endif
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