image656toyuv.c

来自「BF533的视频采集程序」· C语言 代码 · 共 69 行

extern unsigned char * pImageyuv_out;
void IMAGE656TOYUV(unsigned char * p_s)
{
	int i,j;
   	unsigned char * p_y0;
   	unsigned char * p_u0;
   	unsigned char * p_v0;
   	unsigned char * p_y1;
   	unsigned char * p_u1;
   	unsigned char * p_v1;
   	p_y0 = p_s + 1;
   	p_u0 = p_s;
   	p_v0 = p_s + 2;
   	p_y1 = p_y0 + 414720;
    p_u1 = p_u0 + 414720;
    p_v1 = p_v0 + 414720;
   	for(i=0;i < 288;i++)
   	{
   		//transfer y
   		for(j=0;j < 720;j++)
   		{
   			*pImageyuv_out = *p_y0;
   			pImageyuv_out++;
   			p_y0 = p_y0 + 2;
   		}
   	
   		for(j=0;j < 720;j++)
   		{
   			*pImageyuv_out = *p_y1;
   			pImageyuv_out++;
   			p_y1 = p_y1 + 2;
   		}
   	}
   		//transfer u v
   	for(i=0;i <288;i++)
   	{	
   		for(j=0;j < 360;j++)
   		{
   			*pImageyuv_out = *p_u0;
   			pImageyuv_out++;
   			p_u0 = p_u0 + 4;
   		}
   	
   		for(j=0;j < 360;j++)
   		{
   			*pImageyuv_out = *p_u1;
   			pImageyuv_out++;
   			p_u1 = p_u1 + 4;
   		}
   	}
   	
   	for(i=0;i <288;i++)
   	{	
   		for(j=0;j < 360;j++)
   		{
   			*pImageyuv_out = *p_v0;
   			pImageyuv_out++;
   			p_v0 = p_v0 + 4;
   		}
   	
   		for(j=0;j < 360;j++)
   		{
   			*pImageyuv_out = *p_v1;
   			pImageyuv_out++;
   			p_v1 = p_v1 + 4;
   		}
   	}
}