1.为什么rkipc脚本开机可以跑手动执行不可以 2.vi获取的数据泛绿如何解决

问题1：
固件自带开机执行的rkipc程序为什么可以通过开机脚本RkLunch.sh运行起来，但是手动执行就不行并且报错

问题2：
从vi拿数据并且保存起来图片为什么泛绿

#include <assert.h>
#include <fcntl.h>
#include <getopt.h>
#include <pthread.h>
#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include "rkmedia_api.h"

#define CAMERA_PATH "rkispp_scale0"
#define PIPE_ID 0
#define CHN_ID 0

static bool quit = false;

void handle_quit_signal(int sig)
{
    printf("vi_program quit....\n");
    quit = true;
}


void * get_camera_vi_thread(void * args)
{
    MEDIA_BUFFER mb = NULL;
    FILE * nv12_file = fopen("test_camera.nv12", "w+");

    while (!quit)
    {
        mb = RK_MPI_SYS_GetMediaBuffer(RK_ID_VI, CHN_ID, -1);
        if(!mb)
        {
            printf("get Vi mb break....\n");
            break;
        }

        fwrite(RK_MPI_MB_GetPtr(mb), 1, RK_MPI_MB_GetSize(mb), nv12_file);
        RK_MPI_MB_ReleaseBuffer(mb);
    }
}


int main(int argc, char *argv[])
{
    printf("main start\n");
    signal(SIGINT, handle_quit_signal);

    int ret;
    VI_CHN_ATTR_S vi_chn_attr;
    vi_chn_attr.pcVideoNode = CAMERA_PATH;
    vi_chn_attr.u32Width = 1920;
    vi_chn_attr.u32Height = 1080;
    vi_chn_attr.enPixFmt = IMAGE_TYPE_NV21;
    vi_chn_attr.u32BufCnt = 3;
    vi_chn_attr.enBufType = VI_CHN_BUF_TYPE_MMAP;
    vi_chn_attr.enWorkMode = VI_WORK_MODE_NORMAL;
    ret = RK_MPI_VI_SetChnAttr(PIPE_ID, CHN_ID, &vi_chn_attr);
    if(ret)
    {
        printf("Create VI Failed...\n");
        return -1;
    }
    else
    {
        printf("Create VI Success...\n");
    }

    ret = RK_MPI_VI_EnableChn(PIPE_ID, CHN_ID);
    if(ret)
    {
        printf("Enable VI Failed...\n");
        return -1;
    }
    else
    {
        printf("Enable VI Success...\n");
    }

    ret = RK_MPI_VI_StartStream(PIPE_ID, CHN_ID);
    if(ret)
    {
        printf("RK_MPI_VI_StartStream Failed...\n");
        return -1;
    }
    else
    {
        printf("RK_MPI_VI_StartStream Success...\n");
    }

    pthread_t pid;
    pthread_create(&pid, NULL, get_camera_vi_thread, NULL);

    while (!quit)
    {
       sleep(1);
    }

    RK_MPI_VI_DisableChn(0, 0);

    return 0;
}