海思OSD问题

在Linux端报错：
[HI_MAPI_VEnc_OSD_GetAttr][1804]HI_MAPI_VEnc_OSD_GetAttr fail s32Ret:a3038009
[HI_MAPI_VEnc_OSD_SetAttr][1762]HI_MAPI_VEnc_OSD_SetAttr fail s32Ret:a3038003
[HI_MAPI_VEnc_OSD_Start][1844]HI_MAPI_VEnc_OSD_Start fail s32Ret:a3038009
Press Enter key to stop record...
[#### s32VeChn:0 the first time of VideoFrame(MAPI_VEnc_GetVStream): u64PTS: [4212136060]
[#### s32VeChn:1 the first time of VideoFrame(MAPI_VEnc_GetVStream): u64PTS: [4212136060]


在HUAWEI LiteOS端：
[Func:HI_MAPI_VEnc_OSD_GetAttr][Line:3388][Info]:osd not been set yet
[Func:HI_MAPI_VEnc_OSD_SetAttr][Line:3276][Info]:stBitmapAttr.enPixelFormat:0 can not less than min val 2
[Func:HI_MAPI_VEnc_OSD_Start][Line:3423][Info]:osd not been set yet
[Func:HI_MAPI_VEnc_OSD_Stop][Line:3558][Info]:osd already been stoped


以下是我的代码：

    pstOsdAttr->stBitmapAttr.enPixelFormat = HI_MPP_PIXEL_FORMAT_RGB_1555;
    pstOsdAttr->stBitmapAttr.pData = (void *)gImage_SHUZU;
    pstOsdAttr->stBitmapAttr.u32Width = 50;
    pstOsdAttr->stBitmapAttr.u32Height = 50;

    pstOsdAttr->stOsdDisplayAttr.bShow = HI_TRUE;
    pstOsdAttr->stOsdDisplayAttr.s32RegionX = 100;
    pstOsdAttr->stOsdDisplayAttr.s32RegionY = 100;
    pstOsdAttr->stOsdDisplayAttr.u32Alpha = 128;
    pstOsdAttr->stOsdDisplayAttr.u32Color = 0X0;


    HI_MAPI_VEnc_OSD_GetAttr(hVencHdl1, hVOsdHdl1, pstOsdAttr);

    HI_MAPI_VEnc_OSD_SetAttr(hVencHdl1, hVOsdHdl1, pstOsdAttr);

    HI_MAPI_VEnc_OSD_Start(hVencHdl1,hVOsdHdl1);

请问是我设置的参数问题还是调用流程的问题？