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https://github.com/aaru-dps/Aaru.Compression.Native.git
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55 lines
2.1 KiB
C
55 lines
2.1 KiB
C
/*
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* This file is part of the Aaru Data Preservation Suite.
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* Copyright (c) 2019-2025 Natalia Portillo.
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of the
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* License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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/* lh5_mem.h
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*
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* In-memory I/O glue for LH5 decompression.
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* Defines the mem_getc()/mem_putc() buffer readers/writers
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* and declares the lh5_decompress() entry point.
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*/
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#ifndef AARU_COMPRESSION_NATIVE_LH5_H
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#define AARU_COMPRESSION_NATIVE_LH5_H
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#include <stddef.h>
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#include <stdint.h>
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/* --------------------------------------------------------------------------
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* State for in-memory I/O
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* --------------------------------------------------------------------------
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* in_ptr/in_left: where to read next compressed byte
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* out_ptr/out_left: where to write next decompressed byte
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* mem_error: set to 1 on underflow/overflow
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*/
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extern const uint8_t *in_ptr;
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extern size_t in_left;
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extern uint8_t *out_ptr;
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extern size_t out_left;
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extern int mem_error;
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/* --------------------------------------------------------------------------
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* Fetch one byte from in_buf; returns EOF on underflow
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* -------------------------------------------------------------------------- */
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int mem_getc(void);
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/* --------------------------------------------------------------------------
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* Write one byte into out_buf; returns c or EOF on overflow
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* -------------------------------------------------------------------------- */
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int mem_putc(int c);
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#endif // AARU_COMPRESSION_NATIVE_LH5_H
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