📒 笔记文档

初始化和登录

可以借鉴：002_usb红外摄像头初始化登录.md

查看摄像头的能力

可以借鉴：003_usb红外摄系统能力查询.md

配置参数

int configure_device(void)
{
    USB_COMMON_COND cond = {0};
    cond.dwSize = sizeof(cond);
    cond.byChannelID = USB_CHANNEL_IR;

    USB_THERMAL_STREAM_PARAM tsp = {0};
    tsp.dwSize = sizeof(tsp);
    tsp.byVideoCodingType = 8; //
    tsp.dwWidth = 256; tsp.dwHeight = 192; tsp.dwFrameRate = 25;

    USB_CONFIG_INPUT_INFO in = {0};
    USB_CONFIG_OUTPUT_INFO out = {0};
    in.lpCondBuffer = &cond; in.dwCondBufferSize = sizeof(cond);
    in.lpInBuffer = &tsp; in.dwInBufferSize = sizeof(tsp);
    if (!USB_SetDeviceConfig(g_userId, USB_SET_THERMAL_STREAM_PARAM, &in, &out)) return -1;

    USB_VIDEO_PARAM vp = {0};
    vp.dwVideoFormat = USB_STREAM_YUY2;
    vp.dwWidth = 256; vp.dwHeight = 192; vp.dwFramerate = 25;
    in.lpInBuffer = &vp; in.dwInBufferSize = sizeof(vp);
    if (!USB_SetDeviceConfig(g_userId, USB_SET_VIDEO_PARAM, &in, &out)) return -1;
    printf("Config: type=8 YUY2 256x192@25\n");
    return 0;
}

• 参数解析

开启流&设置流回调

static void __stdcall cb(LONG h, USB_FRAME_INFO *f, void *u)
{
    (void)h; (void)u;
    if (!f || !f->pBuf || f->dwStreamType != USB_STREAM_YUY2) return;
    g_frameCnt++;

    if (g_frameCnt == 1)
    {
        printf("[CB#1] %lux%lu buf=%lu\n",
               (unsigned long)f->dwWidth, (unsigned long)f->dwHeight,
               (unsigned long)f->dwBufSize);
        printf("  raw: ");
        for (int i = 0; i < f->dwBufSize; i++) printf("%02x ", f->pBuf[i]);
        printf("\n");
    }

    if (g_frameCnt <= 3 || (g_frameCnt % 25) == 0)
        printf("[CB#%d] frame\n", g_frameCnt);
}

int start_stream(int seconds)
{
    USB_STREAM_CALLBACK_PARAM cp = {0};
    cp.dwSize = sizeof(cp);
    cp.dwStreamType = USB_STREAM_YUY2;
    cp.funcStreamCallBack = cb;

    LONG h = USB_StartStreamCallback(g_userId, &cp);
    if (h < 0) return -1;

    sleep(seconds);
    USB_StopChannel(g_userId, (DWORD)h);
    return 0;
}