/*
 * Copyright (c) 2011, The Broad Institute
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

package org.broadinstitute.sting.gatk.datasources.reads;

/**
 * Constants used in reading & writing BAM files
 */
class GATKBAMFileConstants {
    /**
     * The beginning of a BAMRecord is a fixed-size block of 8 int32s
     */
    static final int FIXED_BLOCK_SIZE = 8 * 4;

    /**
     * Sanity check -- we never expect BAMRecords to be as big as this.
     */
    static final int MAXIMUM_RECORD_LENGTH = 1024 * 1024;

    /**
     * BAM file magic number.  This is what is present in the gunzipped version of the file,
     * which never exists on disk.
     */

    static final byte[] BAM_MAGIC = "BAM\1".getBytes();
    /**
     * BAM index file magic number.
     */
    static final byte[] BAM_INDEX_MAGIC = "BAI\1".getBytes();
}
