60 lines
2.2 KiB
C
60 lines
2.2 KiB
C
/*
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Copyright (c) 2012-2013, 2018 Genome Research Ltd.
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Author: James Bonfield <jkb@sanger.ac.uk>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the names Genome Research Ltd and Wellcome Trust Sanger
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Institute nor the names of its contributors may be used to endorse or promote
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products derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY GENOME RESEARCH LTD AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL GENOME RESEARCH LTD OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef CRAM_STATS_H
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#define CRAM_STATS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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cram_stats *cram_stats_create(void);
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int cram_stats_add(cram_stats *st, int64_t val);
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void cram_stats_del(cram_stats *st, int64_t val);
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void cram_stats_dump(cram_stats *st);
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void cram_stats_free(cram_stats *st);
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/*
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* Computes entropy from integer frequencies for various encoding methods and
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* picks the best encoding.
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*
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* FIXME: we could reuse some of the code here for the actual encoding
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* parameters too. Eg the best 'k' for SUBEXP or the code lengths for huffman.
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*
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* Returns the best codec to use.
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*/
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enum cram_encoding cram_stats_encoding(cram_fd *fd, cram_stats *st);
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#ifdef __cplusplus
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}
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#endif
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#endif
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