Changeset 316 in pacpusframework


Ignore:
Timestamp:
07/28/14 17:53:28 (10 years ago)
Author:
phudelai
Message:

corrected conflict problems

File:
1 edited

Legend:

Unmodified
Added
Removed

  • trunk/include/Pacpus/PacpusTools/BinaryDecoder.h

    r305 r316  
    1 <<<<<<< .mine
    21// %pacpus:license{
    32// This file is part of the PACPUS framework distributed under the
    … …  
    3736#endif // __cplusplus
    3837
     38#include "PacpusToolsConfig.h" 
     39 
    3940#include <stdio.h>
    4041
    … …  
    13921393
    13931394#endif // BINARYDECODER_H
    1394 =======
    1395 // %pacpus:license{
    1396 // This file is part of the PACPUS framework distributed under the
    1397 // CECILL-C License, Version 1.0.
    1398 // %pacpus:license}
    1399 /// @file
    1400 /// @author  Gerald Dherbomez <firstname.surname@utc.fr>
    1401 /// @date    July, 2008
    1402 /// @version $Id: BinaryDecoder.h 76 2013-01-10 17:05:10Z kurdejma $
    1403 /// @copyright Copyright (c) UTC/CNRS Heudiasyc 2006 - 2013. All rights reserved.
    1404 /// @brief Extracts data of specified type in a string.
    1405 ///
    1406 /// Purpose:    Extract data of specified type in a string (char *)
    1407 /// Usage:
    1408 ///     bool xDecodeToXXX(T* result, const char * data, const unsigned int startBit, const unsigned int length)
    1409 ///     => x = format (i:Intel, Little Endian)
    1410 ///                   (m:Motorola, Big Endian)
    1411 ///     => XXX = type of return value
    1412 ///                   (Bool = bool)
    1413 ///                   (I8 = char - 8 bits)
    1414 ///                   (UI8 = unsigned char - 8 bits)
    1415 ///                   (I16 = short - 16 bits)
    1416 ///                   (UI16 = unsigned short - 16 bits)
    1417 ///                   (I32 = long - 32 bits)
    1418 ///                   (UI32 = unsigned long - 32 bits)
    1419 ///                   (I64 = long long - 64 bits)
    1420 ///                   (UI16 = unisgned long long - 64 bits)
    1421 ///
    1422 ///     ex: inline bool mDecodeToUI16(r, str, 8, 12);
    1423 
    1424 #ifndef BINARYDECODER_H
    1425 #define BINARYDECODER_H
    1426 
    1427 #ifdef __cplusplus
    1428 extern "C"
    1429 {
    1430 #endif // __cplusplus
    1431 
    1432 #include "PacpusToolsConfig.h" 
    1433  
    1434 #include <stdio.h>
    1435 
    1436 //////////////////////////////////////////////////////////////////////////
    1437 // print the data in the hexadecimal format in the console
    1438 inline void displayData(const unsigned char * data, const unsigned long length, const int id)
    1439 {
    1440     printf("\ndata = ");
    1441     for (unsigned int i = 0;i< length;++i )
    1442         printf("%02x ",data[i]);
    1443     printf(" dlc = %ld ID = 0x%x\n", length, id);
    1444 }
    1445 
    1446 //////////////////////////////////////////////////////////////////////////
    1447 // for Big Endian - Motorola coding
    1448 //------------------------------------------------------------------------
    1449 // return true if the signal is spread on more than 1 byte
    1450 // ie if length is greater than ((startBit%8) + 1)
    1451 // example:
    1452 //   7654 3210
    1453 // 0 .... ..||
    1454 // 1 |||| ....
    1455 // startBit is 1 and the length is 8: result gives (1%8)+1 = 2 < length(=6)
    1456 inline bool mSpreadOnMoreThan1Byte(const unsigned int startBit, const unsigned int length)
    1457 {
    1458     if ( (length  > (startBit & 0x07) + 1) ) {
    1459         return true;
    1460     } else {
    1461         return false;
    1462     }
    1463 }
    1464 
    1465 //////////////////////////////////////////////////////////////////////////
    1466 // for Little Endian - Intel coding
    1467 //------------------------------------------------------------------------
    1468 // return true if the signal is spread on more than 1 byte
    1469 // ie if length is greater than 8-(startBit%8)
    1470 // example:
    1471 //   7654 3210
    1472 // 0 ||.. ....
    1473 // 1 .... ||||
    1474 // startBit is 6 and the length is 6: result gives 8-((6%8)) = 2 < length(=6)
    1475 inline bool iSpreadOnMoreThan1Byte(const unsigned int startBit, const unsigned int length)
    1476 {
    1477     if ( length  > 8 - (startBit & 0x07) ) {
    1478         return true;
    1479     } else {
    1480         return false;
    1481     }
    1482 }
    1483 
    1484 //////////////////////////////////////////////////////////////////////////
    1485 // for Big Endian - Motorola coding
    1486 //------------------------------------------------------------------------
    1487 // return true if the signal is spread on more than 2 bytes
    1488 // ie if (length - ((startBit%8) + 1) is greater than 8
    1489 // example:
    1490 //   7654 3210
    1491 // 0 .... ...|
    1492 // 1 |||| ||||
    1493 // 2 ||.. ....
    1494 // the start bit is 0 and the length is 11: result gives 11 - (0%8+1) = 10 (>8)
    1495 //////////////////////////////////////////////////////////////////////////
    1496 inline bool mSpreadOnMoreThan2Bytes(const unsigned int startBit, const unsigned int length)
    1497 {
    1498     if ( length - ((startBit & 0x07) + 1) > 8 )
    1499         return true;
    1500     else
    1501         return false;
    1502 }
    1503 
    1504 //////////////////////////////////////////////////////////////////////////
    1505 // for Little Endian - Intel coding
    1506 //------------------------------------------------------------------------
    1507 // return true if the signal is spread on more than 2 bytes
    1508 // ie if (length - (8 - startBit)) is greater than 8
    1509 // example:
    1510 //   7654 3210
    1511 // 0 |... ....
    1512 // 1 |||| ||||
    1513 // 2 .... ..||
    1514 // the start bit is 7 and the length is 11: result gives 11 - (8 - 7) = 10 (>8)
    1515 //////////////////////////////////////////////////////////////////////////
    1516 inline bool iSpreadOnMoreThan2Bytes(const unsigned int startBit, const unsigned int length)
    1517 {
    1518     if ( length - (8 - (startBit & 0x07)) > 8 )
    1519         return true;
    1520     else
    1521         return false;
    1522 }
    1523 
    1524 //////////////////////////////////////////////////////////////////////////
    1525 // for Big Endian - Motorola coding
    1526 //------------------------------------------------------------------------
    1527 // return true if the signal is spread on more than 4 bytes
    1528 // ie if length is greater than ((startBit%8) + 1)
    1529 // example:
    1530 //   7654 3210
    1531 // 0 .... ..||
    1532 // 1 |||| ||||
    1533 // 2 |||| ||||
    1534 // 3 |||| ||||
    1535 // 4 |||. ....
    1536 // startBit is 1 and the length is 29: result gives 29 - ((1%8)+1) = 27 (> 24)
    1537 inline bool mSpreadOnMoreThan4Bytes(const unsigned int startBit, const unsigned int length)
    1538 {
    1539     return (3*8) < (length - ((startBit & 0x07) + 1));
    1540 }
    1541 
    1542 //////////////////////////////////////////////////////////////////////////
    1543 // for Little Endian - Intel coding
    1544 //------------------------------------------------------------------------
    1545 // return true if the signal is spread on more than 4 bytes
    1546 // ie if length is greater than 8-(startBit%8)
    1547 // example:
    1548 //   7654 3210
    1549 // 0 ||.. ....
    1550 // 1 |||| ||||
    1551 // 2 |||| ||||
    1552 // 3 |||| ||||
    1553 // 4 .... ..||
    1554 // startBit is 6 and the length is 28: result gives 28 - (8-((6%8))) = 26  (>24)
    1555 inline bool iSpreadOnMoreThan4Bytes(const unsigned int startBit, const unsigned int length)
    1556 {
    1557     return (3*8) < (length - (8 - (startBit & 0x07)));
    1558 }
    1559 
    1560 //////////////////////////////////////////////////////////////////////////
    1561 // return a 8-bits shifted-left mask corresponding to the length parameter
    1562 // ex: shift = 2 and length = 3
    1563 // mask will be 0b00011100
    1564 inline unsigned char getShiftMask8(const unsigned int shift, const unsigned int length)
    1565 {
    1566     unsigned char mask;
    1567     switch (length)
    1568     {
    1569     case 1: mask = 0x01; break;
    1570     case 2: mask = 0x03; break;
    1571     case 3: mask = 0x07; break;
    1572     case 4: mask = 0x0F; break;
    1573     case 5: mask = 0x1F; break;
    1574     case 6: mask = 0x3F; break;
    1575     case 7: mask = 0x7F; break;
    1576     case 8: mask = 0xFF; break;
    1577     default: mask = 0; break;
    1578     }
    1579     return mask << shift;
    1580 }
    1581 
    1582 //////////////////////////////////////////////////////////////////////////
    1583 // return a 8-bits mask corresponding to the length parameter with bit order decreasing
    1584 // ex: startBit = 2 and length = 3
    1585 // mask will be 0b00000111
    1586 inline unsigned char getMask8( const unsigned int length )
    1587 {
    1588     unsigned char mask;
    1589     switch (length) {
    1590     case 1: mask = 0x01; break;
    1591     case 2: mask = 0x03; break;
    1592     case 3: mask = 0x07; break;
    1593     case 4: mask = 0x0F; break;
    1594     case 5: mask = 0x1F; break;
    1595     case 6: mask = 0x3F; break;
    1596     case 7: mask = 0x7F; break;
    1597     case 8: mask = 0xFF; break;
    1598     default: mask = 0; break;
    1599     }
    1600     return mask;
    1601 }
    1602 
    1603 //////////////////////////////////////////////////////////////////////////
    1604 // return a 16-bits shifted-left mask corresponding to the length parameter
    1605 inline unsigned short getShiftMask16(const unsigned int shift, const unsigned int length)
    1606 {
    1607     unsigned short mask;
    1608     switch (length) {
    1609     case 1: mask = 0x0001; break;
    1610     case 2: mask = 0x0003; break;
    1611     case 3: mask = 0x0007; break;
    1612     case 4: mask = 0x000F; break;
    1613     case 5: mask = 0x001F; break;
    1614     case 6: mask = 0x003F; break;
    1615     case 7: mask = 0x007F; break;
    1616     case 8: mask = 0x00FF; break;
    1617     case 9: mask = 0x01FF; break;
    1618     case 10: mask = 0x03FF; break;
    1619     case 11: mask = 0x07FF; break;
    1620     case 12: mask = 0x0FFF; break;
    1621     case 13: mask = 0x1FFF; break;
    1622     case 14: mask = 0x3FFF; break;
    1623     case 15: mask = 0x7FFF; break;
    1624     case 16: mask = 0xFFFF; break;
    1625     default: mask = 0; break;
    1626     }
    1627     return mask << shift;
    1628 }
    1629 
    1630 //////////////////////////////////////////////////////////////////////////
    1631 // return a 16-bits mask corresponding to the length parameter with bit order decreasing
    1632 inline unsigned short getMask16( const unsigned int length )
    1633 {
    1634     unsigned short mask;
    1635     switch (length) {
    1636     case 1: mask = 0x0001; break;
    1637     case 2: mask = 0x0003; break;
    1638     case 3: mask = 0x0007; break;
    1639     case 4: mask = 0x000F; break;
    1640     case 5: mask = 0x001F; break;
    1641     case 6: mask = 0x003F; break;
    1642     case 7: mask = 0x007F; break;
    1643     case 8: mask = 0x00FF; break;
    1644     case 9: mask = 0x01FF; break;
    1645     case 10: mask = 0x03FF; break;
    1646     case 11: mask = 0x07FF; break;
    1647     case 12: mask = 0x0FFF; break;
    1648     case 13: mask = 0x1FFF; break;
    1649     case 14: mask = 0x3FFF; break;
    1650     case 15: mask = 0x7FFF; break;
    1651     case 16: mask = 0xFFFF; break;
    1652     default: mask = 0; break;
    1653     }
    1654     return mask;
    1655 }
    1656 
    1657 //////////////////////////////////////////////////////////////////////////
    1658 // return a 32-bits shifted-left mask corresponding to the length parameter
    1659 inline unsigned long getShiftMask32(const unsigned int shift, const unsigned int length)
    1660 {
    1661     unsigned long mask;
    1662     switch (length) {
    1663     case 1: mask = 0x00000001; break;
    1664     case 2: mask = 0x00000003; break;
    1665     case 3: mask = 0x00000007; break;
    1666     case 4: mask = 0x0000000F; break;
    1667     case 5: mask = 0x0000001F; break;
    1668     case 6: mask = 0x0000003F; break;
    1669     case 7: mask = 0x0000007F; break;
    1670     case 8: mask = 0x000000FF; break;
    1671     case 9: mask = 0x000001FF; break;
    1672     case 10: mask = 0x000003FF; break;
    1673     case 11: mask = 0x000007FF; break;
    1674     case 12: mask = 0x00000FFF; break;
    1675     case 13: mask = 0x00001FFF; break;
    1676     case 14: mask = 0x00003FFF; break;
    1677     case 15: mask = 0x00007FFF; break;
    1678     case 16: mask = 0x0000FFFF; break;
    1679     case 17: mask = 0x0001FFFF; break;
    1680     case 18: mask = 0x0003FFFF; break;
    1681     case 19: mask = 0x0007FFFF; break;
    1682     case 20: mask = 0x000FFFFF; break;
    1683     case 21: mask = 0x001FFFFF; break;
    1684     case 22: mask = 0x003FFFFF; break;
    1685     case 23: mask = 0x007FFFFF; break;
    1686     case 24: mask = 0x00FFFFFF; break;
    1687     case 25: mask = 0x01FFFFFF; break;
    1688     case 26: mask = 0x03FFFFFF; break;
    1689     case 27: mask = 0x07FFFFFF; break;
    1690     case 28: mask = 0x0FFFFFFF; break;
    1691     case 29: mask = 0x1FFFFFFF; break;
    1692     case 30: mask = 0x3FFFFFFF; break;
    1693     case 31: mask = 0x7FFFFFFF; break;
    1694     case 32: mask = 0xFFFFFFFF; break;
    1695     default: mask = 0; break;
    1696     }
    1697     return mask << shift;
    1698 }
    1699 
    1700 //////////////////////////////////////////////////////////////////////////
    1701 // return a 32-bits mask corresponding to the length parameter with bit order decreasing
    1702 inline unsigned long getMask32( const unsigned int length )
    1703 {
    1704     unsigned long mask;
    1705     switch (length) {
    1706     case 1: mask = 0x00000001; break;
    1707     case 2: mask = 0x00000003; break;
    1708     case 3: mask = 0x00000007; break;
    1709     case 4: mask = 0x0000000F; break;
    1710     case 5: mask = 0x0000001F; break;
    1711     case 6: mask = 0x0000003F; break;
    1712     case 7: mask = 0x0000007F; break;
    1713     case 8: mask = 0x000000FF; break;
    1714     case 9: mask = 0x000001FF; break;
    1715     case 10: mask = 0x000003FF; break;
    1716     case 11: mask = 0x000007FF; break;
    1717     case 12: mask = 0x00000FFF; break;
    1718     case 13: mask = 0x00001FFF; break;
    1719     case 14: mask = 0x00003FFF; break;
    1720     case 15: mask = 0x00007FFF; break;
    1721     case 16: mask = 0x0000FFFF; break;
    1722     case 17: mask = 0x0001FFFF; break;
    1723     case 18: mask = 0x0003FFFF; break;
    1724     case 19: mask = 0x0007FFFF; break;
    1725     case 20: mask = 0x000FFFFF; break;
    1726     case 21: mask = 0x001FFFFF; break;
    1727     case 22: mask = 0x003FFFFF; break;
    1728     case 23: mask = 0x007FFFFF; break;
    1729     case 24: mask = 0x00FFFFFF; break;
    1730     case 25: mask = 0x01FFFFFF; break;
    1731     case 26: mask = 0x03FFFFFF; break;
    1732     case 27: mask = 0x07FFFFFF; break;
    1733     case 28: mask = 0x0FFFFFFF; break;
    1734     case 29: mask = 0x1FFFFFFF; break;
    1735     case 30: mask = 0x3FFFFFFF; break;
    1736     case 31: mask = 0x7FFFFFFF; break;
    1737     case 32: mask = 0xFFFFFFFF; break;
    1738     default: mask = 0; break;
    1739     }
    1740     return mask;
    1741 }
    1742 
    1743 //////////////////////////////////////////////////////////////////////////
    1744 // return a 64-bits mask corresponding to the length parameter with bit order decreasing
    1745 inline unsigned long long getMask64( const unsigned int length )
    1746 {
    1747     unsigned long long mask;
    1748     switch (length) {
    1749     case 1: mask = 0x0000000000000001ULL; break;
    1750     case 2: mask = 0x0000000000000003ULL; break;
    1751     case 3: mask = 0x0000000000000007ULL; break;
    1752     case 4: mask = 0x000000000000000FULL; break;
    1753     case 5: mask = 0x000000000000001FULL; break;
    1754     case 6: mask = 0x000000000000003FULL; break;
    1755     case 7: mask = 0x000000000000007FULL; break;
    1756     case 8: mask = 0x00000000000000FFULL; break;
    1757     case 9: mask = 0x00000000000001FFULL; break;
    1758     case 10: mask = 0x00000000000003FFULL; break;
    1759     case 11: mask = 0x00000000000007FFULL; break;
    1760     case 12: mask = 0x0000000000000FFFULL; break;
    1761     case 13: mask = 0x0000000000001FFFULL; break;
    1762     case 14: mask = 0x0000000000003FFFULL; break;
    1763     case 15: mask = 0x0000000000007FFFULL; break;
    1764     case 16: mask = 0x000000000000FFFFULL; break;
    1765     case 17: mask = 0x000000000001FFFFULL; break;
    1766     case 18: mask = 0x000000000003FFFFULL; break;
    1767     case 19: mask = 0x000000000007FFFFULL; break;
    1768     case 20: mask = 0x00000000000FFFFFULL; break;
    1769     case 21: mask = 0x00000000001FFFFFULL; break;
    1770     case 22: mask = 0x00000000003FFFFFULL; break;
    1771     case 23: mask = 0x00000000007FFFFFULL; break;
    1772     case 24: mask = 0x0000000000FFFFFFULL; break;
    1773     case 25: mask = 0x0000000001FFFFFFULL; break;
    1774     case 26: mask = 0x0000000003FFFFFFULL; break;
    1775     case 27: mask = 0x0000000007FFFFFFULL; break;
    1776     case 28: mask = 0x000000000FFFFFFFULL; break;
    1777     case 29: mask = 0x000000001FFFFFFFULL; break;
    1778     case 30: mask = 0x000000003FFFFFFFULL; break;
    1779     case 31: mask = 0x000000007FFFFFFFULL; break;
    1780     case 32: mask = 0x00000000FFFFFFFFULL; break;
    1781     case 33: mask = 0x00000001FFFFFFFFULL; break;
    1782     case 34: mask = 0x00000003FFFFFFFFULL; break;
    1783     case 35: mask = 0x00000007FFFFFFFFULL; break;
    1784     case 36: mask = 0x0000000FFFFFFFFFULL; break;
    1785     case 37: mask = 0x0000001FFFFFFFFFULL; break;
    1786     case 38: mask = 0x0000003FFFFFFFFFULL; break;
    1787     case 39: mask = 0x0000007FFFFFFFFFULL; break;
    1788     case 40: mask = 0x000000FFFFFFFFFFULL; break;
    1789     case 41: mask = 0x000001FFFFFFFFFFULL; break;
    1790     case 42: mask = 0x000003FFFFFFFFFFULL; break;
    1791     case 43: mask = 0x000007FFFFFFFFFFULL; break;
    1792     case 44: mask = 0x00000FFFFFFFFFFFULL; break;
    1793     case 45: mask = 0x00001FFFFFFFFFFFULL; break;
    1794     case 46: mask = 0x00003FFFFFFFFFFFULL; break;
    1795     case 47: mask = 0x00007FFFFFFFFFFFULL; break;
    1796     case 48: mask = 0x0000FFFFFFFFFFFFULL; break;
    1797     case 49: mask = 0x0001FFFFFFFFFFFFULL; break;
    1798     case 50: mask = 0x0003FFFFFFFFFFFFULL; break;
    1799     case 51: mask = 0x0007FFFFFFFFFFFFULL; break;
    1800     case 52: mask = 0x000FFFFFFFFFFFFFULL; break;
    1801     case 53: mask = 0x001FFFFFFFFFFFFFULL; break;
    1802     case 54: mask = 0x003FFFFFFFFFFFFFULL; break;
    1803     case 55: mask = 0x007FFFFFFFFFFFFFULL; break;
    1804     case 56: mask = 0x00FFFFFFFFFFFFFFULL; break;
    1805     case 57: mask = 0x01FFFFFFFFFFFFFFULL; break;
    1806     case 58: mask = 0x03FFFFFFFFFFFFFFULL; break;
    1807     case 59: mask = 0x07FFFFFFFFFFFFFFULL; break;
    1808     case 60: mask = 0x0FFFFFFFFFFFFFFFULL; break;
    1809     case 61: mask = 0x1FFFFFFFFFFFFFFFULL; break;
    1810     case 62: mask = 0x3FFFFFFFFFFFFFFFULL; break;
    1811     case 63: mask = 0x7FFFFFFFFFFFFFFFULL; break;
    1812     case 64: mask = 0xFFFFFFFFFFFFFFFFULL; break;
    1813     default: mask = 0; break;
    1814     }
    1815     return mask;
    1816 }
    1817 
    1818 //////////////////////////////////////////////////////////////////////////
    1819 /// Returns a 64-bits shifted-left mask corresponding to the length parameter
    1820 inline unsigned long long getShiftMask64(const unsigned int shift, const unsigned int length)
    1821 {
    1822     unsigned long long mask;
    1823     mask = getMask64( length );
    1824     mask <<= shift;
    1825     return mask;
    1826 }
    1827 
    1828 //////////////////////////////////////////////////////////////////////////
    1829 /// Big Endian - Motorola coding
    1830 inline bool mDecodeToBool(const unsigned char * data, const unsigned int startBit)
    1831 {
    1832     return (data[startBit>>3] & getShiftMask8(startBit&0x07,1)) != 0;
    1833 }
    1834 
    1835 //////////////////////////////////////////////////////////////////////////
    1836 // Big Endian - Motorola coding
    1837 // to test ?
    1838 inline bool mDecodeToUI64(unsigned long long * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    1839 {
    1840     if (length > 64) {
    1841         *result = 0;
    1842         return false;
    1843     }
    1844 
    1845     if (length == 64) {
    1846         // only work if data are correctly byte-aligned
    1847         unsigned char c[8];   // c[0] = MSB
    1848         for (int i = 0 ; i < 8 ; i++)
    1849             c[i] = data[(startBit>>3) + i];
    1850 
    1851         unsigned long long temp = 0;
    1852         for (int i = 0 ; i < 8 ; i++)
    1853             temp += (c[i] << ( 56 - (8*i) ) );
    1854         *result = temp;
    1855         return true;
    1856     } else {
    1857         unsigned char c[8], mask[8], nbBits[8]; // MSB = c[0]
    1858         nbBits[0] = (startBit & 0x07)+1;
    1859         mask[0] = getMask8( nbBits[0] );
    1860         c[0] = data[startBit>>3] & mask[0];
    1861         unsigned short nbBitsIncrement = nbBits[0];
    1862         for (int i = 1 ; i < 8 ; i++) {
    1863             nbBits[i] = static_cast<unsigned char>( (length - nbBitsIncrement) < 8 ? length - nbBitsIncrement : 8 );
    1864             nbBitsIncrement += nbBits[i];
    1865             mask[i] = getShiftMask8(8 - nbBits[i],nbBits[i]);
    1866             c[i] = data[(startBit>>3) + i] & mask[i];
    1867         }
    1868 
    1869         unsigned long long temp = 0;
    1870         for (int i = 0 ; i < 8 ; i++)
    1871             temp += (c[i] << ( 56 - (8*i) ) );
    1872         *result = temp >> (56 + (startBit&0x07) + 1 - length);
    1873         return true;
    1874     }
    1875 }
    1876 
    1877 //////////////////////////////////////////////////////////////////////////
    1878 // Big Endian - Motorola coding
    1879 // to test ?
    1880 inline bool mDecodeToI64(long long *result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    1881 {
    1882     if (length>64) {
    1883         *result = 0;
    1884         return false;
    1885     }
    1886 
    1887     if (length == 64) {
    1888         // only work if data are correctly byte-aligned
    1889         unsigned char c[8];   // c[0] = MSB
    1890         for (int i = 0 ; i < 8 ; i++)
    1891             c[i] = data[(startBit>>3) + i];
    1892 
    1893         for (int i = 0 ; i < 8 ; i++)
    1894             *result += (c[i] << ( 56 - (8*i) ) );
    1895 
    1896         // need to be signed ??
    1897         return true;
    1898     } else {
    1899         unsigned char c[8], mask[8], nbBits[8]; // MSB = c[0]
    1900         nbBits[0] = (startBit & 0x07)+1;
    1901         mask[0] = getMask8( nbBits[0] );
    1902         c[0] = data[startBit>>3] & mask[0];
    1903         unsigned short nbBitsIncrement = nbBits[0];
    1904         for (int i = 1 ; i < 8 ; i++) {
    1905             nbBits[i] = static_cast<unsigned char>( (length - nbBitsIncrement) < 8 ? (length - nbBitsIncrement) : 8 );
    1906             nbBitsIncrement += nbBits[i];
    1907             mask[i] = getShiftMask8(8 - nbBits[i],nbBits[i]);
    1908             c[i] = data[(startBit>>3) + i] & mask[i];
    1909         }
    1910         unsigned long long temp = 0;
    1911         for (int i = 0 ; i < 8 ; i++)
    1912             temp += (c[i] << ( 56 - (8*i) ) );
    1913         temp >>= (56 + (startBit&0x07) + 1 - length);
    1914 
    1915         if ( temp & getShiftMask64(length-1,1) )
    1916             // do the two's complement to get the signed value if the msb=1
    1917             *result = -1 * ( ( (~temp) + 1 ) & getMask64(length) );
    1918         else
    1919             *result = temp;
    1920 
    1921         return true;
    1922     }
    1923 }
    1924 
    1925 //////////////////////////////////////////////////////////////////////////
    1926 // Big Endian - Motorola coding
    1927 // ok
    1928 inline bool mDecodeToUI32(unsigned long *result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    1929 {
    1930     if (length>32) {
    1931         *result = 0;
    1932         return false;
    1933     }
    1934 
    1935     // verify that the frame is not spread in 5 bytes
    1936     if (mSpreadOnMoreThan4Bytes(startBit, length)) {
    1937         // decode in a 64-bits integer
    1938         unsigned long long temp;
    1939         if (mDecodeToUI64(&temp,data,startBit,length))
    1940         {
    1941             *result = static_cast<unsigned long> (temp);
    1942             return true;
    1943         } else {
    1944             *result = 0;
    1945             return false;
    1946         }
    1947     } else {
    1948         if (length == 32) {
    1949             // only work if data are correctly byte-aligned
    1950             unsigned char c1, c2, c3, c4;
    1951             c1 = data[startBit>>3];
    1952             c2 = data[(startBit>>3) + 1];
    1953             c3 = data[(startBit>>3) + 2];
    1954             c4 = data[(startBit>>3) + 3];
    1955 
    1956             *result = (c1 << 24) + (c2 << 16) + (c3 << 8) + c4;
    1957             return true;
    1958         } else {
    1959             unsigned char c[4], mask[4], nbBits[4]; // MSB = c[0]
    1960             nbBits[0] = (startBit & 0x07)+1;
    1961             nbBits[1] = static_cast<unsigned char>( (length - nbBits[0]) < 8 ? length - nbBits[0] : 8 );
    1962             nbBits[2] = static_cast<unsigned char>( (length - nbBits[0] - nbBits[1]) < 8 ? (length - nbBits[0] - nbBits[1]) : 8 );
    1963             nbBits[3] = static_cast<unsigned char>( (length - nbBits[0] - nbBits[1] - nbBits[2]) < 8 ? (length - nbBits[0] - nbBits[1] - nbBits[2]) : 8 );
    1964             mask[0] = getMask8( nbBits[0] );
    1965             mask[1] = getShiftMask8(8 - nbBits[1],nbBits[1]);
    1966             mask[2] = getShiftMask8(8 - nbBits[2],nbBits[2]);
    1967             mask[3] = getShiftMask8(8 - nbBits[3],nbBits[3]);
    1968             c[0] = data[startBit>>3] & mask[0];
    1969             c[1] = data[(startBit>>3) + 1] & mask[1];
    1970             c[2] = data[(startBit>>3) + 2] & mask[2];
    1971             c[3] = data[(startBit>>3) + 3] & mask[3];
    1972             *result = ( (c[0]<<24) + (c[1]<<16) + (c[2]<<8) + c[3]) >> (24 + (startBit&0x07) + 1 - length);
    1973             return true;
    1974         }
    1975     }
    1976 }
    1977 
    1978 //////////////////////////////////////////////////////////////////////////
    1979 // Big Endian - Motorola coding
    1980 // ok
    1981 inline bool mDecodeToI32(long *result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    1982 {
    1983     if (length>32) {
    1984         *result = 0;
    1985         return false;
    1986     }
    1987 
    1988     // verify that the frame is not spread in 5 bytes
    1989     if (mSpreadOnMoreThan4Bytes(startBit, length)) {
    1990         // decode in a 64-bits integer
    1991         long long temp;
    1992         if (mDecodeToI64(&temp,data,startBit,length))
    1993         {
    1994             *result = static_cast<long>(temp);
    1995             return true;
    1996         } else {
    1997             *result = 0;
    1998             return false;
    1999         }
    2000     } else {
    2001         if (length == 32)
    2002         {
    2003             // only work if data are correctly byte-aligned
    2004             unsigned char c1, c2, c3, c4;
    2005             c1 = data[startBit>>3];
    2006             c2 = data[(startBit>>3) + 1];
    2007             c3 = data[(startBit>>3) + 2];
    2008             c4 = data[(startBit>>3) + 3];
    2009 
    2010             *result = (c1 << 24) + (c2 << 16) + (c3 << 8) + c4;
    2011             return true;
    2012         } else {
    2013             unsigned char c[4], mask[4], nbBits[4]; // MSB = c[0]
    2014             nbBits[0] = (startBit & 0x07) + 1;
    2015             nbBits[1] = static_cast<unsigned char>( (length - nbBits[0]) < 8 ? length - nbBits[0] : 8 );
    2016             nbBits[2] = static_cast<unsigned char>( (length - nbBits[0] - nbBits[1]) < 8 ? (length - nbBits[0] - nbBits[1]) : 8 );
    2017             nbBits[3] = static_cast<unsigned char>( (length - nbBits[0] - nbBits[1] - nbBits[2]) < 8 ? length - nbBits[0] - nbBits[1] - nbBits[2] : 8 );
    2018             mask[0] = getMask8( nbBits[0] );
    2019             mask[1] = getShiftMask8(8 - nbBits[1],nbBits[1]);
    2020             mask[2] = getShiftMask8(8 - nbBits[2],nbBits[2]);
    2021             mask[3] = getShiftMask8(8 - nbBits[3],nbBits[3]);
    2022             c[0] = data[startBit>>3] & mask[0];
    2023             c[1] = data[(startBit>>3) + 1] & mask[1];
    2024             c[2] = data[(startBit>>3) + 2] & mask[2];
    2025             c[3] = data[(startBit>>3) + 3] & mask[3];
    2026 
    2027             unsigned long temp = ( (c[0]<<24) + (c[1]<<16) + (c[2]<<8) + c[3]) >> (24 + (startBit&0x07) + 1 - length);
    2028             if (temp & getShiftMask32(length-1, 1))
    2029                 // do the two's complement to get the signed value if the msb=1
    2030                 *result = -1 * ( ( (~temp) + 1 ) & getMask32(length) );
    2031             else
    2032                 *result = temp;
    2033             return true;
    2034         }
    2035     }
    2036 }
    2037 
    2038 
    2039 
    2040 //////////////////////////////////////////////////////////////////////////
    2041 // Big Endian - Motorola coding
    2042 // ok
    2043 inline bool mDecodeToUI16(unsigned short * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2044 {
    2045     if (length > 16) {
    2046         *result = 0;
    2047         return false;
    2048     }
    2049 
    2050     // verify that the frame is not spread in 3 bytes
    2051     if (mSpreadOnMoreThan2Bytes(startBit, length)) {
    2052         // decode in a 32-bits integer
    2053         unsigned long temp;
    2054         if (mDecodeToUI32(&temp,data,startBit,length)) {
    2055             *result = static_cast<unsigned short>(temp);
    2056             return true;
    2057         } else {
    2058             *result = 0;
    2059             return false;
    2060         }
    2061     } else {
    2062         if (length == 16) {
    2063             // only work if data are correctly byte-aligned
    2064             unsigned char LSB, MSB;
    2065             MSB = data[startBit>>3];
    2066             LSB = data[(startBit>>3) + 1];
    2067 
    2068             *result = ( (MSB << 8) + LSB );
    2069             return true;
    2070         } else {
    2071             unsigned char LSB, MSB, maskMSB, maskLSB, nbBitsMSB, nbBitsLSB;
    2072             nbBitsMSB = (startBit & 0x07) + 1;  // the number of bits contained in the MSB
    2073             nbBitsLSB = static_cast<unsigned char>(length - nbBitsMSB);
    2074             maskMSB = getMask8( nbBitsMSB );
    2075             maskLSB = getShiftMask8(8 - nbBitsLSB , nbBitsLSB);
    2076             MSB = data[startBit>>3] & maskMSB;
    2077             LSB = data[(startBit>>3) + 1] & maskLSB;
    2078 
    2079             *result = ( (MSB << 8) + LSB ) >> (8 + (startBit&0x07) + 1 - length);
    2080             return true;
    2081         }
    2082     }
    2083 }
    2084 
    2085 //////////////////////////////////////////////////////////////////////////
    2086 // Big Endian - Motorola coding
    2087 // ok
    2088 inline bool mDecodeToI16(short *result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2089 {
    2090     if (length > 16) {
    2091         *result = 0;
    2092         return false;
    2093     }
    2094 
    2095     // verify that the frame is not spread in 3 bytes
    2096     if (mSpreadOnMoreThan2Bytes(startBit, length)) {
    2097         // decode in a 32-bits integer
    2098         long temp;
    2099         if (mDecodeToI32(&temp, data, startBit, length)) {
    2100             *result = (short)temp;
    2101             return true;
    2102         } else  {
    2103             *result = 0;
    2104             return false;
    2105         }
    2106     } else {
    2107         // ok data are stored at most in 2 bytes
    2108         if (length == 16) {
    2109             // only work if data are correctly byte-aligned
    2110             unsigned char LSB, MSB;
    2111             MSB = data[startBit>>3];
    2112             LSB = data[(startBit>>3) + 1];
    2113             short temp = (MSB << 8) + LSB;
    2114 
    2115             // Attention : a-t on besoin d'appliquer le signe ?
    2116             // n'est-il pas deja inclu dans la donn�e comme elle est correctement align�e sur l'octet ?
    2117             if (temp & 0x8000) {
    2118                 // do the two's complement to get the signed value
    2119                 *result = - ( ( (~temp) + 1 ) & 0xFFFF );
    2120             } else {
    2121                 *result = temp;
    2122             }
    2123             return true;
    2124         } else {
    2125             unsigned char LSB, MSB, maskMSB, maskLSB, nbBitsMSB, nbBitsLSB;
    2126             nbBitsMSB = (startBit & 0x07) + 1;  // the number of bits contained in the MSB
    2127             nbBitsLSB = static_cast<unsigned char>(length - nbBitsMSB);
    2128             maskMSB = getMask8( nbBitsMSB );
    2129             maskLSB = getShiftMask8(8 - nbBitsLSB , nbBitsLSB);
    2130             MSB = data[startBit>>3] & maskMSB;
    2131             LSB = data[(startBit>>3) + 1] & maskLSB;
    2132             // assign the MSB and LSB char in the short integer value and right-shift
    2133             // to place the lsb to the bit 0
    2134             unsigned short temp = ( (MSB << 8) + LSB ) >> (8 + (startBit&0x07) + 1 - length);
    2135             if (temp & getShiftMask16(length-1,1))
    2136                 // do the two's complement to get the signed value if the msb=1
    2137                 *result = -1 * ( ( (~temp) + 1 ) & getMask16(length) );
    2138             else
    2139                 *result = temp;
    2140             return true;
    2141         }
    2142     }
    2143 }
    2144 
    2145 //////////////////////////////////////////////////////////////////////////
    2146 // Big Endian - Motorola coding
    2147 // OK
    2148 inline bool mDecodeToUI8(unsigned char * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2149 {
    2150     if (length > 8) {
    2151         *result = 0;
    2152         return false;
    2153     }
    2154 
    2155     // verify that the frame is not spread in 2 bytes
    2156     if (mSpreadOnMoreThan1Byte(startBit, length)) {
    2157         // decode in a 16-bit integer
    2158         unsigned short temp;
    2159         if ( mDecodeToUI16(&temp, data, startBit, length) ) {
    2160             *result = static_cast<unsigned char>(temp);
    2161             return true;
    2162         } else {
    2163             *result = 0;
    2164             return false;
    2165         }
    2166     } else {
    2167         // ok data is stored at most in 1 byte
    2168         unsigned char c;
    2169        
    2170                 c = data[startBit>>3];                // >>3 <=> div 8
    2171         //c >>= (8-((startBit & 0x07)+1));      // &0x07 <=> modulo 8
    2172                 c >>= startBit & 0x07 - (length - 1);    // &0x07 <=> modulo 8
    2173                 *result = c & getMask8( length );
    2174 
    2175         return true;
    2176     }
    2177 }
    2178 
    2179 //////////////////////////////////////////////////////////////////////////
    2180 // Big Endian - Motorola coding
    2181 // OK
    2182 inline bool mDecodeToI8(char * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2183 {
    2184     if (length > 8) {
    2185         *result = 0;
    2186         return false;
    2187     }
    2188 
    2189     // verify that the frame is not spread in 2 bytes
    2190     if (mSpreadOnMoreThan1Byte(startBit, length)) {
    2191         // decode in a 16-bit integer
    2192         short temp;
    2193         if ( mDecodeToI16(&temp, data, startBit, length) ) {
    2194             *result = static_cast<char>(temp);
    2195             return true;
    2196         } else {
    2197             *result = 0;
    2198             return false;
    2199         }
    2200     }
    2201     else {
    2202         // ok data is stored at most in 1 byte
    2203         char c;
    2204         c = data[startBit>>3];
    2205         c >>= (8-((startBit & 0x07)+1));
    2206         c = c & getMask8( length );
    2207 
    2208         // a-t-on besoin d'appliquer le signe dans le cas ou length = 8
    2209         // la donnee est correctement alignee sur l'octet donc le signe est peut-etre compris
    2210         if (c & getShiftMask8(length-1,1))
    2211             // do the two's complement to get the signed value if the msb=1
    2212             *result = - ( ( (~c) + 1 ) & getMask8(length) );
    2213         else
    2214             *result = c;
    2215         return true;
    2216     }
    2217 }
    2218 
    2219 //////////////////////////////////////////////////////////////////////////
    2220 // Little Endian - Intel coding
    2221 // ok
    2222 inline bool iDecodeToBool(const unsigned char * data, const unsigned int startBit)
    2223 {
    2224     mDecodeToBool(data, startBit);
    2225 }
    2226 
    2227 //////////////////////////////////////////////////////////////////////////
    2228 // Little Endian - Intel coding
    2229 // pas de depassement possible - la trame CAN fait 64 bits max
    2230 // gerer le signe
    2231 inline bool iDecodeToUI64(unsigned long long * /*result*/, const unsigned char * /*data*/, const unsigned int /*startBit*/, const unsigned int /*length*/)
    2232 {
    2233     return true;
    2234 }
    2235 
    2236 //////////////////////////////////////////////////////////////////////////
    2237 // Little Endian - Intel coding
    2238 // pas de depassement possible - la trame CAN fait 64 bits max
    2239 // gerer le signe
    2240 inline bool iDecodeToI64(long long * /*result*/, const unsigned char * /*data*/, const unsigned int /*startBit*/, const unsigned int /*length*/)
    2241 {
    2242     return true;
    2243 }
    2244 
    2245 //////////////////////////////////////////////////////////////////////////
    2246 // Little Endian - Intel coding
    2247 // gerer le depassement sur plus de 4 octets : necessite la fonction de decodage 64 bits
    2248 // verifier le depassement avant cette ligne :   if (length == 32)
    2249 inline bool iDecodeToUI32(unsigned long * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2250 {
    2251     if (length>32) {
    2252         *result = 0;
    2253         return false;
    2254     }
    2255 
    2256     if (length == 32) {
    2257         // only work if length == 32
    2258         unsigned char c1, c2, c3, c4;
    2259         c4 = data[startBit>>3];       // LSB
    2260         c3 = data[(startBit>>3) + 1];
    2261         c2 = data[(startBit>>3) + 2];
    2262         c1 = data[(startBit>>3) + 3]; // MSB
    2263 
    2264         *result = (c1 << 24) + (c2 << 16) + (c3 << 8) + c4;
    2265         return true;
    2266     } else {
    2267         // todo
    2268         *result = 0;
    2269         return false;
    2270     }
    2271 }
    2272 
    2273 //////////////////////////////////////////////////////////////////////////
    2274 // Little Endian - Intel coding
    2275 // gerer le signe
    2276 // gerer le depassement sur plus de 4 octets : necessite la fonction de decodage 64 bits
    2277 // verifier le depassement avant cette ligne :   if (length == 32)
    2278 inline bool iDecodeToI32(long * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2279 {
    2280     if (length>32) {
    2281         *result = 0;
    2282         return false;
    2283     }
    2284 
    2285     if (length == 32) {
    2286         // only work if length == 32
    2287         unsigned char c1, c2, c3, c4;
    2288         c4 = data[startBit>>3];       // LSB
    2289         c3 = data[(startBit>>3) + 1];
    2290         c2 = data[(startBit>>3) + 2];
    2291         c1 = data[(startBit>>3) + 3]; // MSB
    2292 
    2293         *result = (c1 << 24) + (c2 << 16) + (c3 << 8) + c4;
    2294         return true;
    2295     } else {
    2296         // todo
    2297         *result = 0;
    2298         return false;
    2299     }
    2300 }
    2301 
    2302 //////////////////////////////////////////////////////////////////////////
    2303 // Little Endian - Intel coding
    2304 // gerer le depassement sur plus de 2 octets
    2305 // verifier le depassement avant cette ligne :   if (length == 16)
    2306 inline bool iDecodeToUI16(unsigned short * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2307 {
    2308     if (length > 16) {
    2309         *result = 0;
    2310         return false;
    2311     }
    2312 
    2313     if (length == 16) {
    2314         // only work if length == 16
    2315         unsigned char LSB, MSB;
    2316         LSB = data[startBit>>3];
    2317         MSB = data[(startBit>>3) + 1];
    2318 
    2319         *result = (MSB << 8) + LSB;
    2320         return true;
    2321     } else {
    2322         // TODO
    2323         *result = 0;
    2324         return false;
    2325     }
    2326 }
    2327 
    2328 //////////////////////////////////////////////////////////////////////////
    2329 // Little Endian - Intel coding
    2330 // gerer le signe
    2331 // gerer le depassement sur plus de 2 octets
    2332 // verifier le depassement avant cette ligne :   if (length == 16)
    2333 // manque le decalage
    2334 inline bool iDecodeToI16(short * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2335 {
    2336     if (length > 16) {
    2337         *result = 0;
    2338         return false;
    2339     }
    2340 
    2341     if (length == 16) {
    2342         // only work if length == 16
    2343         unsigned char LSB, MSB;
    2344         LSB = data[startBit>>3];
    2345         MSB = data[(startBit>>3) + 1];
    2346 
    2347         *result = (MSB << 8) + LSB;
    2348         return true;
    2349     } else {
    2350         // todo
    2351         *result = 0;
    2352         return false;
    2353     }
    2354 }
    2355 
    2356 //////////////////////////////////////////////////////////////////////////
    2357 // Little Endian - Intel coding
    2358 // OK
    2359 inline bool iDecodeToUI8(unsigned char * result,const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2360 {
    2361     if (length > 8) {
    2362         *result = 0;
    2363         return false;
    2364     }
    2365 
    2366     // verify that the frame is not spread in 2 bytes
    2367     if (iSpreadOnMoreThan1Byte(startBit, length)) {
    2368         // decode in a 16-bit integer
    2369         unsigned short temp;
    2370         if ( iDecodeToUI16(&temp, data, startBit, length) ) {
    2371             // and cast in an 8 bit integer
    2372             *result = (unsigned char) temp;
    2373             return true;
    2374         } else {
    2375             *result = 0;
    2376             return true;
    2377         }
    2378     } else {
    2379         // ok data is stored at most in 1 byte
    2380         unsigned char c;
    2381         c = data[startBit>>3];
    2382         c >>= (startBit & 0x07);
    2383         *result = c & getMask8( length );
    2384 
    2385         return true;
    2386     }
    2387 }
    2388 
    2389 //////////////////////////////////////////////////////////////////////////
    2390 // Little Endian - Intel coding
    2391 // OK
    2392 inline bool iDecodeToI8(char * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2393 {
    2394     if (length > 8) {
    2395         *result = 0;
    2396         return false;
    2397     }
    2398 
    2399     // verify that the frame is not spread in 2 bytes
    2400     if (iSpreadOnMoreThan1Byte(startBit, length)) {
    2401         // decode in a 16-bit integer
    2402         short temp;
    2403         if ( iDecodeToI16(&temp, data, startBit, length) ) {
    2404             // and cast in an 8 bit integer
    2405             *result = static_cast<char>(temp);
    2406             return true;
    2407         } else {
    2408             *result = 0;
    2409             return true;
    2410         }
    2411     } else {
    2412         // ok data is stored at most in 1 byte
    2413         char c;
    2414         c = data[startBit>>3];     // >>3 <=> div 8
    2415         c >>= (startBit & 0x07);    // &0x07 <=> modulo 8
    2416         c = c & getMask8( length );
    2417         if (c & getShiftMask8(length-1,1))
    2418             // do the two's complement to get the signed value if the msb=1
    2419             *result = - ( ( (~c) + 1 ) & getMask8(length) );
    2420         else
    2421             *result = c;
    2422 
    2423         return true;
    2424     }
    2425 }
    2426 
    2427 //////////////////////////////////////////////////////////////////////////
    2428 // Big Endian - Motorola coding
    2429 // ok
    2430 inline bool mobileyemDecodeToUI16(unsigned short * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2431 {
    2432     if (length>16){ *result = 0; return false; }
    2433 
    2434     // verify that the frame is not spread in 3 bytes
    2435     /*    if (mSpreadOnMoreThan2Bytes(startBit, length))
    2436     {
    2437     // decode in a 32-bits integer
    2438     unsigned long temp;
    2439     if (mDecodeToUI32(&temp,data,startBit,length))
    2440     {
    2441     *result = static_cast<unsigned short>(temp);
    2442     return true;
    2443     } else {
    2444     *result = 0;
    2445     return false;
    2446     }
    2447     }
    2448     else
    2449     {*/
    2450     if (length == 16) {
    2451         // only work if data are correctly byte-aligned
    2452         unsigned char LSB, MSB;
    2453         MSB = data[startBit>>3];
    2454         LSB = data[(startBit>>3) + 1];
    2455 
    2456         *result = ( (MSB << 8) + LSB );
    2457         return true;
    2458     } else {
    2459         unsigned char LSB, MSB, maskMSB, maskLSB, nbBitsMSB, nbBitsLSB;
    2460         nbBitsMSB = (startBit & 0x07) + 1;  // the number of bits contained in the MSB
    2461         nbBitsLSB = static_cast<unsigned char>(length - nbBitsMSB);
    2462         maskMSB = getMask8( nbBitsMSB );
    2463         maskLSB = getShiftMask8(8 - nbBitsLSB , nbBitsLSB);
    2464         MSB = data[startBit>>3] & maskMSB;
    2465         LSB = data[(startBit>>3) + 1] & maskLSB;
    2466 
    2467         *result = ( (MSB << 8) + LSB ) >> (8 + (startBit&0x07) + 1 - length);
    2468         return true;
    2469     }
    2470     //}
    2471 }
    2472 
    2473 //////////////////////////////////////////////////////////////////////////
    2474 // Big Endian - Motorola coding
    2475 // ok
    2476 inline bool mobileyemDecodeToI16(short *result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2477 {
    2478     if (length>16) { *result = 0; return false; }
    2479 
    2480     // verify that the frame is not spread in 3 bytes
    2481     /*    if (mSpreadOnMoreThan2Bytes(startBit, length))
    2482     {
    2483     // decode in a 32-bits integer
    2484     long temp;
    2485     if (mDecodeToI32(&temp, data, startBit, length)) {
    2486     *result = (short)temp;
    2487     return true;
    2488     } else  {
    2489     *result = 0;
    2490     return false;
    2491     }
    2492     }
    2493     else  // ok data are stored at most in 2 bytes
    2494     {*/
    2495     if (length == 16)
    2496     {
    2497         // only work if data are correctly byte-aligned
    2498         unsigned char LSB, MSB;
    2499         MSB = data[startBit>>3];
    2500         LSB = data[(startBit>>3) + 1];
    2501         short temp = (MSB << 8) + LSB;
    2502 
    2503         // Attention : a-t on besoin d'appliquer le signe ?
    2504         // n'est-il pas deja inclu dans la donn�e comme elle est correctement align�e sur l'octet ?
    2505         if (temp & 0x8000) {
    2506             // do the two's complement to get the signed value
    2507             *result = - ( ( (~temp) + 1 ) & 0xFFFF );
    2508         } else {
    2509             *result = temp;
    2510         }
    2511         return true;
    2512     } else {
    2513         unsigned char LSB, MSB, maskMSB, maskLSB, nbBitsMSB, nbBitsLSB;
    2514         nbBitsMSB = (startBit & 0x07)+1;  // the number of bits contained in the MSB
    2515         nbBitsLSB = static_cast<unsigned char>(length - nbBitsMSB);
    2516         maskMSB = getMask8( nbBitsMSB );
    2517         maskLSB = getShiftMask8(8 - nbBitsLSB , nbBitsLSB);
    2518         MSB = data[startBit>>3] & maskMSB;
    2519         LSB = data[(startBit>>3) + 1] & maskLSB;
    2520         // assign the MSB and LSB char in the short integer value and right-shift
    2521         // to place the lsb to the bit 0
    2522         unsigned short temp = ( (MSB << 8) + LSB ) >> (8 + (startBit&0x07) + 1 - length);
    2523         if (temp & getShiftMask16(length-1,1))
    2524             // do the two's complement to get the signed value if the msb=1
    2525             *result = -1 * ( ( (~temp) + 1 ) & getMask16(length) );
    2526         else
    2527             *result = temp;
    2528         return true;
    2529     }
    2530     //}
    2531 }
    2532 
    2533 //////////////////////////////////////////////////////////////////////////
    2534 // Big Endian - Motorola coding
    2535 // OK
    2536 inline bool mobileyemDecodeToUI8(unsigned char * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2537 {
    2538     if (length>8) { *result = 0; return false; }
    2539 
    2540     // verify that the frame is not spread in 2 bytes
    2541     if (mSpreadOnMoreThan1Byte(startBit, length))
    2542     {
    2543         // decode in a 16-bit integer
    2544         unsigned short temp;
    2545         if ( mDecodeToUI16(&temp, data, startBit, length) ) {
    2546             *result = static_cast<unsigned char>(temp);
    2547             return true;
    2548         } else {
    2549             *result = 0;
    2550             return true;
    2551         }
    2552     }
    2553     else // ok data is stored at most in 1 byte
    2554     {
    2555         unsigned char c;
    2556         c = data[startBit>>3];                // >>3 <=> div 8
    2557         c >>= (8-((startBit & 0x07)+1));      // &0x07 <=> modulo 8
    2558         *result = c & getMask8( length );
    2559 
    2560         return true;
    2561     }
    2562 }
    2563 
    2564 //////////////////////////////////////////////////////////////////////////
    2565 // Big Endian - Motorola coding
    2566 // OK
    2567 inline bool mobileyemDecodeToI8(char * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2568 {
    2569     if (length>8) { *result = 0; return false; }
    2570 
    2571     // verify that the frame is not spread in 2 bytes
    2572     if (mSpreadOnMoreThan1Byte(startBit, length))
    2573     {
    2574         // decode in a 16-bit integer
    2575         short temp;
    2576         if ( mDecodeToI16(&temp, data, startBit, length) ) {
    2577             *result = static_cast<char>(temp);
    2578             return true;
    2579         } else {
    2580             *result = 0;
    2581             return true;
    2582         }
    2583     }
    2584     else // ok data is stored at most in 1 byte
    2585     {
    2586         char c;
    2587         c = data[startBit>>3];
    2588         c >>= (8-((startBit & 0x07)+1));
    2589         c = c & getMask8( length );
    2590 
    2591         // a-t-on besoin d'appliquer le signe dans le cas ou length = 8
    2592         // la donnee est correctement alignee sur l'octet donc le signe est peut-etre compris
    2593         if (c & getShiftMask8(length-1,1))
    2594             // do the two's complement to get the signed value if the msb=1
    2595             *result = - ( ( (~c) + 1 ) & getMask8(length) );
    2596         else
    2597             *result = c;
    2598         return true;
    2599     }
    2600 }
    2601 
    2602 //////////////////////////////////////////////////////////////////////////
    2603 // Little Endian - Intel coding
    2604 // OK, mais gerer le depassement sur plus de 2 octets
    2605 inline bool mobileyeiDecodeToUI16(unsigned short * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2606 {
    2607     if (length>16) {
    2608         *result = 0;
    2609         return false;
    2610     }
    2611 
    2612     if (length == 16) {
    2613         // only work if length == 16
    2614         unsigned char LSB, MSB;
    2615         LSB = data[startBit>>3];
    2616         MSB = data[(startBit>>3) + 1];
    2617 
    2618         *result = (unsigned short)((MSB << 8) + LSB);
    2619         return true;
    2620     } else {
    2621         unsigned char LSB, MSB, maskMSB, maskLSB, nbBitsMSB, nbBitsLSB;
    2622 
    2623         nbBitsLSB = static_cast<unsigned char>(8*((startBit>>3) + 1) - startBit);
    2624         nbBitsMSB = static_cast<unsigned char>(length - nbBitsLSB);
    2625         maskLSB = getShiftMask8(8 - nbBitsLSB , nbBitsLSB);
    2626         maskMSB = getMask8( nbBitsMSB );
    2627         LSB = data[startBit>>3] & maskLSB;
    2628         MSB = data[(startBit>>3) + 1] & maskMSB;
    2629 
    2630         *result = (unsigned short)((MSB<<8) + (LSB>>(startBit-8*(startBit>>3))));
    2631 
    2632         return true;
    2633     }
    2634 }
    2635 
    2636 //////////////////////////////////////////////////////////////////////////
    2637 // Little Endian - Intel coding
    2638 // gerer le signe
    2639 // gerer le depassement sur plus de 2 octets
    2640 // verifier le depassement avant cette ligne :   if (length == 16)
    2641 // manque le decalage
    2642 inline bool mobileyeiDecodeToI16(short * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2643 {
    2644     if (length > 16) {
    2645         *result = 0;
    2646         return false;
    2647     }
    2648 
    2649     if (length == 16) {
    2650         // only work if length == 16
    2651         unsigned char LSB, MSB;
    2652         LSB = data[startBit>>3];
    2653         MSB = data[(startBit>>3) + 1];
    2654 
    2655         short temp = (MSB << 8) + LSB;
    2656 
    2657         if (temp & 0x8000) {
    2658             // do the two's complement to get the signed value
    2659             *result = - ( ( (~temp) + 1 ) & 0xFFFF );
    2660         } else {
    2661             *result = temp;
    2662         }
    2663         return true;
    2664     } else {
    2665         unsigned char LSB, MSB, maskMSB, maskLSB, nbBitsMSB, nbBitsLSB;
    2666 
    2667         nbBitsLSB = static_cast<unsigned char>(8*((startBit>>3) + 1) - startBit);
    2668         nbBitsMSB = static_cast<unsigned char>(length - nbBitsLSB);
    2669         maskLSB = getShiftMask8(8 - nbBitsLSB , nbBitsLSB);
    2670         maskMSB = getMask8( nbBitsMSB );
    2671         LSB = data[startBit>>3] & maskLSB;
    2672         MSB = data[(startBit>>3) + 1] & maskMSB;
    2673 
    2674         unsigned short temp = (unsigned short)((MSB<<8) + (LSB>>(startBit-8*(startBit>>3))));
    2675 
    2676         if (temp & getShiftMask16(length-1,1))
    2677             // do the two's complement to get the signed value if the msb=1
    2678             *result = -1 * ( ( (~temp) + 1 ) & getMask16(length) );
    2679         else
    2680             *result = temp;
    2681         return true;
    2682     }
    2683 }
    2684 
    2685 //////////////////////////////////////////////////////////////////////////
    2686 // Little Endian - Intel coding
    2687 // OK
    2688 inline bool mobileyeiDecodeToUI8(unsigned char * result,const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2689 {
    2690     if (length>8) { *result = 0; return false; }
    2691 
    2692     // verify that the frame is not spread in 2 bytes
    2693     if (iSpreadOnMoreThan1Byte(startBit, length))
    2694     {
    2695         // decode in a 16-bit integer
    2696         unsigned short temp;
    2697         if ( iDecodeToUI16(&temp, data, startBit, length) )
    2698         {
    2699             // and cast in an 8 bit integer
    2700             *result = (unsigned char) temp;
    2701             return true;
    2702         }
    2703         else
    2704         {
    2705             *result = 0;
    2706             return true;
    2707         }
    2708     }
    2709     else // ok data is stored at most in 1 byte
    2710     {
    2711         unsigned char c;
    2712         c = data[startBit>>3];
    2713         c >>= (startBit & 0x07);
    2714         *result = c & getMask8( length );
    2715 
    2716         return true;
    2717     }
    2718 
    2719 }
    2720 
    2721 //////////////////////////////////////////////////////////////////////////
    2722 // Little Endian - Intel coding
    2723 // OK
    2724 inline bool mobileyeiDecodeToI8(char * result, const unsigned char * data, const unsigned int startBit, const unsigned int length)
    2725 {
    2726     if (length > 8) {
    2727         *result = 0;
    2728         return false;
    2729     }
    2730 
    2731     // verify that the frame is not spread in 2 bytes
    2732     if (iSpreadOnMoreThan1Byte(startBit, length)) {
    2733         // decode in a 16-bit integer
    2734         short temp;
    2735         if ( iDecodeToI16(&temp, data, startBit, length) ) {
    2736             // and cast in an 8 bit integer
    2737             *result = (char)(temp);
    2738             return true;
    2739         } else {
    2740             *result = 0;
    2741             return true;
    2742         }
    2743     } else {
    2744         // ok data is stored at most in 1 byte
    2745         char c;
    2746         c = data[startBit>>3];     // >>3 <=> div 8
    2747         c >>= (startBit & 0x07);    // &0x07 <=> modulo 8
    2748         c = c & getMask8( length );
    2749         if (c & getShiftMask8(length-1,1))
    2750             // do the two's complement to get the signed value if the msb=1
    2751             *result = - ( ( (~c) + 1 ) & getMask8(length) );
    2752         else
    2753             *result = c;
    2754 
    2755         return true;
    2756     }
    2757 }
    2758 
    2759 inline int mobileyeDecodeCAN(unsigned char *data,unsigned char bigEndian,unsigned int startBit,unsigned int length,unsigned char Signed)
    2760 {
    2761     int value;
    2762     unsigned short ustemp16 = 0;
    2763     unsigned char uctemp8 = 0;
    2764     short stemp16 = 0;
    2765     char ctemp8 = 0;
    2766 
    2767     if(bigEndian) {
    2768         if(length>8){
    2769             if(Signed){mobileyemDecodeToI16(&stemp16,data, startBit, length);value = stemp16;}
    2770             else {mobileyemDecodeToUI16(&ustemp16,data, startBit, length);value = ustemp16;}}
    2771         else if(Signed) {mobileyemDecodeToI8(&ctemp8,data, startBit, length);value = ctemp8;}
    2772         else {mobileyemDecodeToUI8(&uctemp8,data, startBit, length);value = uctemp8;}
    2773     } else {
    2774         if(length>8){
    2775             if(Signed) {mobileyeiDecodeToI16(&stemp16,data, startBit, length);value = stemp16;}
    2776             else {mobileyeiDecodeToUI16(&ustemp16,data, startBit, length);value = ustemp16;}}
    2777         else if(Signed) {mobileyeiDecodeToI8(&ctemp8,data, startBit, length);value = ctemp8;}
    2778         else {mobileyeiDecodeToUI8(&uctemp8,data, startBit, length);value = uctemp8;}
    2779     }
    2780 
    2781     return value;
    2782 }
    2783 
    2784 #ifdef __cplusplus
    2785 }
    2786 #endif // __cplusplus
    2787 
    2788 #endif // BINARYDECODER_H
    2789 >>>>>>> .r303
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