/*
 * =====================================================================================
 *
 * Filename: bit.cpp
 *
 * Description:
 *
 * Version: 1.0
 * Created: 2016年03月16日 15:06:33
 * Last Modified: 2016年03月16日 15:06:33
 * Revision: none
 * Compiler: gcc
 *
 * Author: zt (),
 * Organization:
 *
 * =====================================================================================
 */

#include <stdio.h>
#include <stdlib.h>
#include <vector>

unsigned char test[] =
{
 0xaa, 0xaa, 0xaa, 0xaa, 0x6a,
 0xaa, 0xaa, 0xaa, 0xaa, 0x7a,
 0xaa, 0xaa, 0xaa, 0xaa, 0x8a,
 0xaa, 0xaa, 0xaa, 0xaa, 0x9a,
};

unsigned char test2[128] = { 0 };


int BitSet ( unsigned char* data, int pos, unsigned char bitval )
{
 if ( bitval )
 data[pos / 8] |= ( 1 << ( pos % 8 ) );
 else
 data[pos / 8] &= ~ ( 1 << ( pos % 8 ) );

 return 0;
}


int BitBit ( unsigned char* input, unsigned char* output, int linecnt, int lineBit, int validLineBit )
{
 for ( int i = 0; i < linecnt; ++i )
 {
 for ( int j = 0; j < validLineBit; ++j )
 BitSet ( output, validLineBit * i + j, input[ i * ( lineBit / 8 ) + j / 8 ] & ( 1 << ( j % 8 ) ) );
 }

 return 0;
}


int main ( int argc, char* argv[] )
{
 for ( int i = 0; i < 20; ++i )
 {
 if ( ! ( i % 0x5 ) && i )
 printf ( "\n" );

 printf ( "%02x ", test[i] );
 }

 printf ( "\n" );

 printf ( "\n" );

 //BitSet ( test, 17, 0 );
 BitBit ( test, test2, 4, 40, 36 );

 for ( int i = 0; i < 20; ++i )
 {
 if ( ! ( i % 0x5 ) && i )
 printf ( "\n" );

 printf ( "%02x ", test2[i] );
 }

 printf ( "\n" );

 return 0;
}