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/* SPDX-License-Identifier: BSD-3-Clause */
/*
* Copyright (c) 2015-2016, Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder(s) nor the names of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LZFSE_H
#define LZFSE_H
#include <linux/stddef.h>
#include <linux/types.h>
/*! @abstract Get the required scratch buffer size to decompress using LZFSE. */
size_t lzfse_decode_scratch_size(void);
/*! @abstract Decompress a buffer using LZFSE.
*
* @param dst_buffer
* Pointer to the first byte of the destination buffer.
*
* @param dst_size
* Size of the destination buffer in bytes.
*
* @param src_buffer
* Pointer to the first byte of the source buffer.
*
* @param src_size
* Size of the source buffer in bytes.
*
* @param scratch_buffer
* If non-NULL, a pointer to scratch space for the routine to use as workspace;
* the routine may use up to lzfse_decode_scratch_size( ) bytes of workspace
* during its operation, and will not perform any internal allocations. If
* NULL, the routine may allocate its own memory to use during operation via
* a single call to malloc( ), and will release it by calling free( ) prior
* to returning. For most use, passing NULL is perfectly satisfactory, but if
* you require strict control over allocation, you will want to pass an
* explicit scratch buffer.
*
* @return
* The number of bytes written to the destination buffer if the input is
* successfully decompressed. If there is not enough space in the destination
* buffer to hold the entire expanded output, only the first dst_size bytes
* will be written to the buffer and dst_size is returned. Note that this
* behavior differs from that of lzfse_encode_buffer.
*/
size_t lzfse_decode_buffer(uint8_t *__restrict dst_buffer, size_t dst_size,
const uint8_t *__restrict src_buffer, size_t src_size,
void *__restrict scratch_buffer);
#endif /* LZFSE_H */
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