OpenV2G/src/codec/MethodsBag.c

/*
 * Copyright (C) 2007-2011 Siemens AG
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

/*******************************************************************
 *
 * @author Daniel.Peintner.EXT@siemens.com
 * @version 2011-12-02 
 * @contact Joerg.Heuer@siemens.com
 *
 * <p>Code generated by EXIdizer</p>
 ********************************************************************/



#ifndef METHODS_BAG_C
#define METHODS_BAG_C

#include "MethodsBag.h"
#include "EXITypes.h"

static const int smallLengths[] = { 0, 0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4,
		4, 4, 4 };

int exiGetCodingLength(uint32_t characteristics, uint16_t* codingLength) {
	if (characteristics < 17) {
		*codingLength = smallLengths[characteristics];
		return 0;
	} else if (characteristics < 33) {
		/* 17 .. 32 */
		*codingLength = 5;
		return 0;
	} else if (characteristics < 65) {
		/* 33 .. 64 */
		*codingLength = 6;
		return 0;
	} else if (characteristics < 129) {
		/* 65 .. 128 */
		*codingLength = 7;
		return 0;
	} else if (characteristics < 257) {
		/* 129 .. 256 */
		*codingLength = 8;
		return 0;
	} else if (characteristics < 513) {
		/* 257 .. 512 */
		*codingLength = 9;
		return 0;
	} else if (characteristics < 1025) {
		/* 513 .. 1024 */
		*codingLength = 10;
		return 0;
	} else {
		/*
		return (int) Math.ceil(Math.log((double) (characteristics))
				/ Math.log(2.0)); */
		return EXI_UNSUPPORTED_EVENT_CODE_CHARACTERISTICS;
	}

}


uint8_t numberOf7BitBlocksToRepresent(uint32_t n) {
	/* assert (n >= 0); */

	/* 7 bits */
	if (n < 128) {
		return 1;
	}
	/* 14 bits */
	else if (n < 16384) {
		return 2;
	}
	/* 21 bits */
	else if (n < 2097152) {
		return 3;
	}
	/* 28 bits */
	else if (n < 268435456) {
		return 4;
	}
	/* 35 bits */
	else {
		/* int, 32 bits */
		return 5;
	}
}



#endif