video_md.c

sample on embedded linux

#include <stdio.h>
#include <time.h>
#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;

HI_S32 main (HI_VOID)
{
    HI_S8 filename[255];
    HI_S32 hiRet = HI_SUCCESS;
    HI_S32 venc_chn;
    HI_S32 vi_chn = 0;
    VENC_INIT_S    venc_init;
    FILE * pfileMd;
    VENC_STREAM_S  venc_stream;  
    MD_STATUS_S status;
    HI_S32 i, j;
    time_t t0, t1;
    HI_S32  wBlock;
    HI_S32  hBlock;
	HI_S32 scale;
    

	/*config A/D device*/
    hiRet = ADconfig(mode, normal);
	if (HI_SUCCESS != hiRet)
	{
	    printf ("ADconfig failed\n");
        HI_VENC_Close();
	    return hiRet;
	}
	/*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;
	}

	hiRet = ViChnConfig(mode, normal, vi_chn);
	if (HI_SUCCESS != hiRet)
	{
	    printf ("vi chn atr config failed\n");
        HI_VENC_Close();
	    return hiRet;
	}
    
    /*create video encode channel*/    
    hiRet = HI_VENC_CreateCH(vi_chn, &venc_chn);
    if ( hiRet != HI_SUCCESS )
    {
        HI_VENC_Close();
        return hiRet;
    }

    /* start video encode */
    hiRet = HI_VENC_StartCH(venc_chn, 0);
    if ( hiRet != HI_SUCCESS )
    {
        HI_VENC_DestroyCH(venc_chn, HI_TRUE);
        HI_VENC_Close();
        return hiRet;
    }

    /*start MD*/
    hiRet = HI_MD_Enable (venc_chn);
    if ( hiRet != HI_SUCCESS )
    {
        HI_VENC_DestroyCH(venc_chn, HI_TRUE); 
        HI_VENC_Close();
        return hiRet;
    }

    sprintf(filename, "venc_md_chn%d.xls", venc_chn);
    pfileMd = fopen (filename, "wb");
	if (HI_NULL_PTR == pfileMd)
    {
        fclose(pfileMd);
        HI_VENC_DestroyCH(venc_chn, HI_TRUE); 
        HI_VENC_Close();
        
        return HI_FAILURE;
    }


    hiRet = HI_VENC_GetSingleAttr(venc_chn, VENC_PICHEIGHT, &hBlock);
    if ( hiRet != HI_SUCCESS )
    {
        HI_VENC_DestroyCH(venc_chn, HI_TRUE); 
        HI_VENC_Close();
        return hiRet;
    }
    
    hiRet = HI_VENC_GetSingleAttr(venc_chn, VENC_PICWIDTH, &wBlock);  
    if ( hiRet != HI_SUCCESS )
    {
        HI_VENC_DestroyCH(venc_chn, HI_TRUE); 
        HI_VENC_Close();
        return hiRet;
    }

    /*calculate the macro number*/
    hBlock = hBlock/16;
    wBlock = wBlock/16;
    
    t0 = time(0);

    do
    {
         /*get stream*/
        HI_VENC_GetStream(venc_chn, &venc_stream, HI_TRUE);
        if ( hiRet != HI_SUCCESS )
        {
            
            HI_VENC_DestroyCH(venc_chn, HI_TRUE); 
            HI_VENC_Close();
            fclose(pfileMd);
            return hiRet;
        }

        if (venc_stream.struUbuff.bIsField)
		{
				scale = 2;
		}
		else
		{
				scale = 1;
		}
		
        /*get MD data*/
        hiRet = HI_MD_GetStatus( venc_chn, &status);
        
        /*save MD in file*/
        if (hiRet == HI_SUCCESS)
        {
            for (i = 0; i < hBlock*scale; i++)
            {
                for (j = 0; j < wBlock; j++)
                {
                    
                    fprintf (pfileMd,"%d\t", status.u8MDValue[i * wBlock + j]);
                }
                fprintf (pfileMd,"\n");
            }
            fprintf (pfileMd,"\n");
        }

        hiRet = HI_VENC_ReleaseStream(venc_chn, &venc_stream);            
        if ( hiRet != HI_SUCCESS )
        {
            HI_VENC_DestroyCH(venc_chn, HI_TRUE);
            HI_VENC_Close();
            fclose(pfileMd);
            return hiRet;
        }
        t1 = time(0);
    }while (t0 + 120 > t1);

    HI_VENC_StopCH(venc_chn);            
    HI_VENC_DestroyCH(venc_chn, HI_TRUE);            
    HI_VENC_Close();
    fclose(pfileMd);
}