76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/*
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* Bitshuffle - Filter for improving compression of typed binary data.
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*
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* This file is part of Bitshuffle
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* Author: Kiyoshi Masui <kiyo@physics.ubc.ca>
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* Website: http://www.github.com/kiyo-masui/bitshuffle
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* Created: 2014
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*
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* See LICENSE file for details about copyright and rights to use.
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*/
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#ifndef BITSHUFFLE_INTERNALS_H
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#define BITSHUFFLE_INTERNALS_H
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// We assume GNU g++ defining `__cplusplus` has stdint.h
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#if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199900L) || defined(__cplusplus)
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#include <stdint.h>
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#else
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typedef unsigned char uint8_t;
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typedef unsigned short uint16_t;
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typedef unsigned int uint32_t;
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typedef signed int int32_t;
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typedef unsigned long long uint64_t;
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typedef long long int64_t;
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#endif
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#include <stdlib.h>
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#include "iochain.h"
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// Constants.
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#ifndef BSHUF_MIN_RECOMMEND_BLOCK
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#define BSHUF_MIN_RECOMMEND_BLOCK 128
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#define BSHUF_BLOCKED_MULT 8 // Block sizes must be multiple of this.
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#define BSHUF_TARGET_BLOCK_SIZE_B 8192
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#endif
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// Macros.
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#define CHECK_ERR_FREE(count, buf) if (count < 0) { free(buf); return count; }
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* ---- Utility functions for internal use only ---- */
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int64_t bshuf_trans_bit_elem(const void* in, void* out, const size_t size,
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const size_t elem_size);
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/* Read a 32 bit unsigned integer from a buffer big endian order. */
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uint32_t bshuf_read_uint32_BE(const void* buf);
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/* Write a 32 bit unsigned integer to a buffer in big endian order. */
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void bshuf_write_uint32_BE(void* buf, uint32_t num);
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int64_t bshuf_untrans_bit_elem(const void* in, void* out, const size_t size,
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const size_t elem_size);
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/* Function definition for worker functions that process a single block. */
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typedef int64_t (*bshufBlockFunDef)(ioc_chain* C_ptr,
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const size_t size, const size_t elem_size, const int option);
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/* Wrap a function for processing a single block to process an entire buffer in
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* parallel. */
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int64_t bshuf_blocked_wrap_fun(bshufBlockFunDef fun, const void* in, void* out,
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const size_t size, const size_t elem_size, size_t block_size, const int option);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // BITSHUFFLE_INTERNALS_H
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