www.pudn.com > MPEG4Codec.zip > clearblock.c

/************************************************************************** 
 *                                                                        * 
 * This code has been developed by Andrea Graziani. This software is an   * 
 * implementation of a part of one or more MPEG-4 Video tools as          * 
 * specified in ISO/IEC 14496-2 standard.  Those intending to use this    * 
 * software module in hardware or software products are advised that its  * 
 * use may infringe existing patents or copyrights, and any such use      * 
 * would be at such party's own risk.  The original developer of this     * 
 * software module and his/her company, and subsequent editors and their  * 
 * companies (including Project Mayo), will have no liability for use of  * 
 * this software or modifications or derivatives thereof.                 * 
 *                                                                        * 
 * Project Mayo gives users of the Codec a license to this software       * 
 * module or modifications thereof for use in hardware or software        * 
 * products claiming conformance to the MPEG-4 Video Standard as          * 
 * described in the Open DivX license.                                    * 
 *                                                                        * 
 * The complete Open DivX license can be found at                         * 
 * http://www.projectmayo.com/opendivx/license.php                        * 
 *                                                                        * 
 **************************************************************************/ 
/** 
*  Copyright (C) 2001 - Project Mayo 
 * 
 * Andrea Graziani (Ag) 
 * 
 * DivX Advanced Research Center  
* 
**/ 
/// clearblock.c // 
 
#include "portab.h" 
 
/** 
 * 
**/ 
 
// zeros a memory block 
// 
void clearblock (short *psBlock) 
{ 
  uint32_t* pu32_b; 
  int i; 
 
	pu32_b = (uint32_t *) psBlock; 
 
  for (i = 0; i < 4; i++) 
  { 
    pu32_b[0] = pu32_b[1] = pu32_b[2] = pu32_b[3] =  
		pu32_b[4] = pu32_b[5] = pu32_b[6] = pu32_b[7] = 0; 
    pu32_b += 8; // 16 coeff zeroed 
  } 
}