video_viattr.c

来自「sample on embedded linux」· C语言 代码 · 共 61 行

#include "hi_common_api.h" 
#include "video_comm.h"
/*config system parameter*/
HI_U16 mode = CIF;
HI_U16 normal = PAL;
VENC_FORMAT_E format = VENC_FORMAT_H264;

int main()
{
    HI_S32 hiRet = HI_SUCCESS;
    HI_S32 viChn;
    /*step 1: config A/D device*/
    hiRet = ADconfig(mode, normal);
	if (HI_SUCCESS != hiRet)
	{
	    printf ("ADconfig failed\n");
        HI_VENC_Close();
	    return hiRet;
	}
	
    /*step 2: config VI public attribute*/
	hiRet = ViPubConfig(mode, normal, format);
	if (HI_SUCCESS != hiRet)
	{
	    printf ("vi public atr config failed\n");
        HI_VENC_Close();
	    return hiRet;
	}

	/*step 3: config VI channel attribute*/
	viChn = 0; 
	hiRet = ViChnConfig(mode, normal, viChn);
	if (HI_SUCCESS != hiRet)
	{
	    printf ("vi chn atr config failed\n");
        HI_VENC_Close();
	    return hiRet;
	}

    /*step 4: config overlay for VI*/
    VI_OVERLAY_CONF_S struOverlay = {viChn, VI_OVERLAY_GREEN, 0, 0, 32, 32};    

    hiRet = HI_VI_SetOverlay(viChn, &struOverlay);
	if (HI_SUCCESS != hiRet)
	{
	    printf ("vi chn set overlay failed\n");
        HI_VENC_Close();
	    return hiRet;
	}
    /*step 5: enable overlay for VI*/
    hiRet = HI_VI_EnableOverlay(viChn);
	if (HI_SUCCESS != hiRet)
	{
	    printf ("enable vi chn overlay failed\n");
        HI_VENC_Close();
	    return hiRet;
	}
	
	return HI_SUCCESS;
}