嵌入式 hi3518平台多路码流添加osd

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/******************************************************************************
function : overlay process
1) create some overlay regions
2) display overlay regions ( One Region -- Multi-VencGroup )
3) change all vencGroups Regions' positio
4) change all vencGroups Regions' Layern
5) change all vencGroups Regions' color
6) load bmp form bmp-file to Region-0
7) change all vencGroups Regions' front alpha
8) change all vencGroups Regions' backgroud alpha
9) update bitmap(not support now)
10) show or hide overlay regions
11) Detach overlay regions from chn
12) Detroy overlay regions
 ******************************************************************************/
HI_S32 JOSEPH_SAMPLE_RGN_OverlayProcess(void)
{
    HI_S32 s32Ret = HI_FAILURE;
    RGN_HANDLE RgnHandle;
    RGN_ATTR_S stRgnAttr;
    MPP_CHN_S stChn;
    VENC_GRP VencGrp;
    RGN_CHN_ATTR_S stChnAttr;
    HI_U32 Joseph_u32Layer = 7;
    HI_U32 Joseph_bind_DevId = 0;
    int last_sec = 0;

    /****************************************
      step 1: create overlay regions
     ****************************************/
    stRgnAttr.enType = OVERLAY_RGN;
    stRgnAttr.unAttr.stOverlay.enPixelFmt = PIXEL_FORMAT_RGB_1555;//PIXEL_FORMAT_RGB_565
    stRgnAttr.unAttr.stOverlay.stSize.u32Width  = 288;
    stRgnAttr.unAttr.stOverlay.stSize.u32Height = 128;
    stRgnAttr.unAttr.stOverlay.u32BgColor = 0xffffff;

    RgnHandle = 0;

    s32Ret = HI_MPI_RGN_Create(RgnHandle, &stRgnAttr);
    if(HI_SUCCESS != s32Ret)
    {
        SAMPLE_PRT("HI_MPI_RGN_Create (%d) failed with %#x!
",
            RgnHandle, s32Ret);
        return HI_FAILURE;
    }
    SAMPLE_PRT("the handle:%d,creat success!
",RgnHandle);


    /*********************************************
      step 2: display overlay regions to venc groups
     *********************************************/

    for(Joseph_bind_DevId = 0; Joseph_bind_DevId < joseph_ipnc_param.joseph_s32ChnNum; Joseph_bind_DevId++)
    {

        VencGrp = 0;
        stChn.enModId = HI_ID_GROUP;
        stChn.s32DevId = Joseph_bind_DevId;
        stChn.s32ChnId = VencGrp;
        RgnHandle = 0;

        printf("%s:[%d] stChn.s32ChnId is %d ,
",__FUNCTION__,__LINE__,stChn.s32ChnId);

        memset(&stChnAttr,0,sizeof(stChnAttr));
        stChnAttr.bShow = HI_TRUE;
        stChnAttr.enType = OVERLAY_RGN;

        stChnAttr.unChnAttr.stOverlayChn.stPoint.s32X = 16;
        stChnAttr.unChnAttr.stOverlayChn.stPoint.s32Y = 32;
        stChnAttr.unChnAttr.stOverlayChn.u32BgAlpha = 128;
        stChnAttr.unChnAttr.stOverlayChn.u32FgAlpha = 0;
        stChnAttr.unChnAttr.stOverlayChn.u32Layer = Joseph_u32Layer--;

        stChnAttr.unChnAttr.stOverlayChn.stQpInfo.bAbsQp = HI_FALSE;
        stChnAttr.unChnAttr.stOverlayChn.stQpInfo.s32Qp  = 0;

        stChnAttr.unChnAttr.stOverlayChn.stInvertColor.stInvColArea.u32Height = 32;
        stChnAttr.unChnAttr.stOverlayChn.stInvertColor.stInvColArea.u32Width = 16;
        stChnAttr.unChnAttr.stOverlayChn.stInvertColor.u32LumThresh = 64;
        stChnAttr.unChnAttr.stOverlayChn.stInvertColor.bInvColEn = HI_TRUE;
        stChnAttr.unChnAttr.stOverlayChn.stInvertColor.enChgMod = LESSTHAN_LUM_THRESH;

        s32Ret = HI_MPI_RGN_AttachToChn(RgnHandle, &stChn, &stChnAttr);
        if(HI_SUCCESS != s32Ret)
        {
            SAMPLE_PRT("HI_MPI_RGN_AttachToChn (%d) failed with %#x!
",
                RgnHandle, s32Ret);
            return HI_FAILURE;
        }
        printf("display region to s32DevId %d chn success!
",stChn.s32DevId);
    }


    /*********************************************
      step 3: show bitmap
     *********************************************/
    struct tm *tmnow;
    struct timeval tv;
    BITMAP_S Joseph_Osd_Bmp;
    gettimeofday(&tv,NULL);

    setlocale(LC_ALL,"zh_CN.UTF-8");
    char osd_content[256] = {0};
    char week_chinese[16] = {0};

    tmnow = localtime(&tv.tv_sec);

    TTF_Font *font;
    /* Initialize the TTF library */
    if ( TTF_Init() < 0 ) {
        return -1;
    }

    font = TTF_OpenFont(JOSEPH_FONT_FILE, JOSEPH_FONT_SIZE);
    if ( font == NULL ) {
        printf("%s %d The fonts is NULL !
",__FUNCTION__,__LINE__);
        return -1;
    }

    /*TTF_SetFontStyle(font,  TTF_STYLE_ITALIC);*/

    while(1)
    {
        memset(osd_content,0,sizeof(osd_content));
        memset(week_chinese,0,sizeof(week_chinese));

        while(1)
        {
            gettimeofday(&tv,NULL);
            if(tv.tv_sec != last_sec)
            {
                last_sec = tv.tv_sec;
                break;
            }
            usleep(20000);
        }

        tmnow = localtime(&tv.tv_sec);

        #if 0

        sprintf(osd_content,"%04d-%02d-%02d %02d:%02d:%02d %s ",
            tmnow->tm_year+1900, tmnow->tm_mon+1, tmnow->tm_mday,tmnow->tm_hour,
            tmnow->tm_min, tmnow->tm_sec,Joseph_utf_weeky_show(tmnow->tm_wday,week_chinese));
        #else

        sprintf(osd_content,"%04d-%02d-%02d %s %02d:%02d:%02d",
            tmnow->tm_year+1900, tmnow->tm_mon+1, tmnow->tm_mday, Joseph_utf_weeky_show(tmnow->tm_wday,week_chinese),
            tmnow->tm_hour,tmnow->tm_min, tmnow->tm_sec);
#if 0
        printf("%s:[%d] The time stamp is %s ... 
",__FUNCTION__,__LINE__,osd_content);
#endif
        joseph_get_luminance_from_sensor_test();
        #endif

        #if 0

        joseph_creat_bmp_data(font,osd_content);
        #else

        joseph_creat_bmp_data_show(font,osd_content,&Joseph_Osd_Bmp);
        #endif
        for(RgnHandle = 0;RgnHandle < 1;RgnHandle++)
        {
            #if 0
            s32Ret = HI_MPI_RGN_SetBitMap(RgnHandle,&stBitmap);
            #else
            s32Ret = HI_MPI_RGN_SetBitMap(RgnHandle,&Joseph_Osd_Bmp);
            #endif
            if(s32Ret != HI_SUCCESS)
            {
                SAMPLE_PRT("HI_MPI_RGN_SetBitMap failed with %#x!
", s32Ret);
                exit(0);
                return HI_FAILURE;
            }

            free(Joseph_Osd_Bmp.pData);
            Joseph_Osd_Bmp.pData = NULL;

        }

    }

    TTF_CloseFont(font);
    font = NULL;
    TTF_Quit();

#if 1
    /*********************************************
      step 4: destory region
     *********************************************/

    for(Joseph_bind_DevId = 0; Joseph_bind_DevId < joseph_ipnc_param.joseph_s32ChnNum; Joseph_bind_DevId++)
    {
        RgnHandle = 0;
        VencGrp = 0;
        stChn.enModId = HI_ID_GROUP;
        stChn.s32DevId = Joseph_bind_DevId;
        stChn.s32ChnId = VencGrp;
        RgnHandle = 0;


        s32Ret = HI_MPI_RGN_DetachFrmChn(RgnHandle, &stChn);
        if(HI_SUCCESS != s32Ret)
        {
            SAMPLE_PRT("HI_MPI_RGN_DetachFrmChn (%d) failed with %#x!
",
                   RgnHandle, s32Ret);
            return HI_FAILURE;
        }
    }

    RgnHandle = 0;
    s32Ret = HI_MPI_RGN_Destroy(RgnHandle);
    if (HI_SUCCESS != s32Ret)
    {
        SAMPLE_PRT("HI_MPI_RGN_Destroy [%d] failed with %#x
",
            RgnHandle, s32Ret);
    }
    SAMPLE_PRT("destory all region success!
");
#endif

    return HI_SUCCESS;
}
</span>

具体Demo代码可以下载：http://download.csdn.net/detail/skdkjxy/8838309 仅供参考，谢谢~

from:http://blog.csdn.net/skdkjzz/article/details/40429587