video_adjust.c

sample on embedded linux

#include "hi_common_api.h"
#include "video_comm.h"
#include "tw2834.h"

#define HI_VI_CHN0 0
#define HI_VO_CHN0 0

HI_U16 mode = D1;
HI_U16 g_videoNorm = NTSC;
VENC_FORMAT_E format = VENC_FORMAT_H264;


/* 0 PAL , 1: NTSC */
static VIDEO_NORM_E get_VideoNorm(void)
{
    HI_S32 fd = -1;
    static VIDEO_NORM_E norm = 0; 
    int ret;

    fd = open("/dev/misc/tw2834dev", O_RDWR, 0);
    if( fd < 0 )
    {
        perror("tw2834\n");
        return VIDEO_ENCODING_MODE_PAL;
    }
    if ((ret = ioctl( fd, TW2834_GETNORM, &norm )) < 0)
    {
        norm = VIDEO_ENCODING_MODE_PAL;  /* default PAL */
        printf("ERROR when get 5150 norm. ERR:%#x\n", ret);
    }
    
    close(fd);

    return norm;
}

/*
** PAL/NTSC adjust by itself
*/
HI_S32 set_vad(HI_S32 normal)
{
    static HI_S32 fd = -1;
    int ret;

    fd = open("/dev/misc/tw2834", O_RDWR, 0);
    if( fd < 0 )
    {
        perror("open tw2834 failed\n");
        return HI_FAILURE;
    }

    if ((ret = ioctl( fd, TW2834_SETNORM, &normal )) < 0)
    {
        printf("tw2834 set mode failed: %x\n", ret);       
        return HI_FAILURE;
    }

    close(fd);

    return HI_SUCCESS;    
}

HI_S32 set_vda(int norm)
{
    static HI_S32 fd = -1;
    int ret;

    int norm2set;

    fd = open("/dev/misc/adv7179", O_RDWR, 0);
    if( fd < 0 )
    {
        perror("adv7179");
        return HI_FAILURE;
    }

    if(norm==0)
        norm2set = VIDEO_MODE_656_PAL; 
    else
        norm2set = VIDEO_MODE_656_NTSC; 

    if ((ret = ioctl(fd, ENCODER_SET_NORM, norm2set )) < 0)
    {
        printf("adv7179 set normal failed: %#x\n", ret);
        return HI_FAILURE;
    }

    close(fd);

    return HI_SUCCESS;
}

int main(void)
{
    HI_S32 tmp;
    HI_S32 hiRet;
    /*adjust the A/D by it self*/
    g_videoNorm = get_VideoNorm();
    
    /* config VI public attribute*/
    hiRet = ViPubConfig(mode, g_videoNorm, format);
    
	if (HI_SUCCESS != hiRet)
	{
	    printf ("vi public atr config failed\n");
        HI_VENC_Close();
	    return hiRet;
	}
    
    /*config VI channel attribute*/
    hiRet = ViChnConfig(mode, g_videoNorm, 0);
	if (HI_SUCCESS != hiRet)
	{
	    printf ("vi chn atr config failed\n");
        HI_VENC_Close();
	    return hiRet;
	}

    /*config D/A device*/
    hiRet = DAconfig(g_videoNorm);
	if (HI_SUCCESS != hiRet)
	{
	    printf ("DAconfig failed\n");
        HI_VENC_Close();
	    return hiRet;
	}

    /*config VO public attribute*/
    hiRet = VoPubConfig(g_videoNorm);
	if (HI_SUCCESS != hiRet)
	{
	    printf ("vo public attr config failed\n");
        HI_VENC_Close();
	    return hiRet;
	}

    /*config VO channel attribute*/
    hiRet = VoChnConfig(g_videoNorm, 0);
	if (HI_SUCCESS != hiRet)
	{
	    printf ("vo chn atr config failed\n");
        HI_VENC_Close();
	    return hiRet;
	}

    /*enable VI2VO*/
    hiRet = HI_VI_EnVi2Vo(HI_VI_CHN0, HI_VO_CHN0, HI_TRUE);
    if (HI_SUCCESS != hiRet)
	{
	    printf ("envi2vo chn atr config failed\n");
        HI_VENC_Close();
	    return hiRet;
	}


    scanf ("%d\n", &tmp);

}