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/*
* Copyright 2014 Tushar Gohad, Kevin M Greenan, Eric Lambert
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 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. 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 HOLDER 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.
*
* liberasurecode postprocessing helpers implementation
*
* vi: set noai tw=79 ts=4 sw=4:
*/
#include "erasurecode_backend.h"
#include "erasurecode_helpers.h"
#include "erasurecode_stdinc.h"
void add_fragment_metadata(char *fragment,
int idx, uint64_t orig_data_size, int blocksize,
int add_chksum)
{
set_fragment_idx(fragment, idx);
set_orig_data_size(fragment, orig_data_size);
set_fragment_payload_size(fragment, blocksize);
if (add_chksum) {
set_checksum(fragment, blocksize);
}
}
int finalize_fragments_after_encode(ec_backend_t instance,
int k, int m, int blocksize, uint64_t orig_data_size,
char **encoded_data, char **encoded_parity)
{
int i, set_chksum = 1;
/* finalize data fragments */
for (i = 0; i < k; i++) {
char *fragment = get_fragment_ptr_from_data(encoded_data[i]);
add_fragment_metadata(fragment, i, orig_data_size,
blocksize, set_chksum);
encoded_data[i] = fragment;
}
/* finalize parity fragments */
for (i = 0; i < m; i++) {
char *fragment = get_fragment_ptr_from_data(encoded_parity[i]);
add_fragment_metadata(fragment, i + k, orig_data_size,
blocksize, set_chksum);
encoded_parity[i] = fragment;
}
return 0;
}
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