clearblock.c

来自「代码实现了基于ARM7的MPEG-4视频解码器」· C语言 代码 · 共 20 行

//****************************************
//File name:  clearblock.c
//Author:     Anna
//Date:
//****************************************

void clearblock (short *psBlock)
{
 unsigned int * pu32_b;
  int i;

	pu32_b = (unsigned int *) 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
  }
}