通过虚拟vo实现多路拼接一路遇到一个问题

海思

现在想把4路视频拼接成1路然后编码发出去，在该论坛搜了一下大部分说通过 vi -> vpss ->虚拟vo -> vpss -> venc来实现（vpss通道模式都为user模式），后来按照这种方法，vpss没有给venc发图像，如下所示：
-----BIND RELATION TABLE--------------------------------------------------------
  FirMod  FirDev  FirChn  SecMod  SecDev  SecChn  TirMod  TirDev  TirChn SendCnt  rstCnt
vpss    0    2    vo    3    0 vpss    1    0    0    0
vpss    0    2    vo    3    1 null    0    0    0    0
vpss    0    2    vo    3    2 null    0    0    0    0
vpss    0    2    vo    3    3 null    0    0    0    0
vpss    1    2    grp    0    0 null    0    0    0    0
   vo    3    0 vpss    1    2    grp    0    0    124    0
   vi    0    0 vpss    0    2    vo    3    0    123    0
   vi    0    0 vpss    0    2    vo    3    1    123    0
   vi    0    0 vpss    0    2    vo    3    2    123    0
   vi    0    0 vpss    0    2    vo    3    3    123    0
但 vi -> vpss ->虚拟vo -> venc可以成功，唯独 vi -> vpss ->虚拟vo -> vpss -> venc不成功，不知道原因在哪里，现在有几点疑问：
1.为什么在虚拟vo后加一个vpss，再连接venc？可以去掉vpss吗，即通过vi -> vpss ->虚拟vo -> venc实现。
2.sdk文档写虚拟vo等同于标清设备，是不是720P以上的分辨率就无法使用虚拟vo来拼接多路视频了？
谢谢。

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feiyashan

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feiyashan 2017-01-04 10:32:02

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忘了说一句，在hi3521平台上。
初始化代码如下：
SAMPLE_VI_MODE_E enViMode = SAMPLE_VI_MODE_1_D1;
HI_U32 u32ViChnCnt = 1/*4*/;
HI_S32 s32VpssGrpCnt = 2/*4*/;
PAYLOAD_TYPE_E enPayLoad[2]= {PT_H264, PT_H264};
PIC_SIZE_E enSize[2] = {PIC_D1, PIC_D1};
VB_CONF_S stVbConf;
VPSS_GRP VpssGrp;
VPSS_CHN VpssChn;
VPSS_GRP_ATTR_S stGrpAttr;
VENC_GRP VencGrp;
VENC_CHN VencChn;
SAMPLE_RC_E enRcMode;
HI_S32 i;
HI_S32 s32Ret = HI_SUCCESS;
HI_U32 u32BlkSize;
HI_CHAR ch;
SIZE_S stSize;
/******************************************
   step 1: start vi dev & chn to capture
******************************************/
s32Ret = SAMPLE_COMM_VI_Start(enViMode, gs_enNorm);
if (HI_SUCCESS != s32Ret)
{
      SAMPLE_PRT("start vi failed!\n");
      goto END_VENC_8D1_0;
}

/******************************************
   step 2: start vpss and vi bind vpss
******************************************/
s32Ret = SAMPLE_COMM_SYS_GetPicSize(gs_enNorm, PIC_D1, &stSize);
if (HI_SUCCESS != s32Ret)
{
      SAMPLE_PRT("SAMPLE_COMM_SYS_GetPicSize failed!\n");
      goto END_VENC_8D1_0;
}
stGrpAttr.u32MaxW = stSize.u32Width;
stGrpAttr.u32MaxH = stSize.u32Height;
stGrpAttr.bDrEn = HI_FALSE;
stGrpAttr.bDbEn = HI_FALSE;
stGrpAttr.bIeEn = HI_TRUE;
stGrpAttr.bNrEn = HI_TRUE;
stGrpAttr.bHistEn = HI_TRUE;
stGrpAttr.enDieMode = VPSS_DIE_MODE_AUTO;
stGrpAttr.enPixFmt = SAMPLE_PIXEL_FORMAT;

s32Ret = SAMPLE_COMM_VPSS_Start_2(0, &stSize, VPSS_MAX_CHN_NUM,&stGrpAttr);
if (HI_SUCCESS != s32Ret)
{
      SAMPLE_PRT("Start Vpss failed!\n");
      goto END_VENC_8D1_1;
}
s32Ret = SAMPLE_COMM_VI_BindVpss(enViMode);
if (HI_SUCCESS != s32Ret)
{
      SAMPLE_PRT("Vi bind Vpss failed!\n");
      goto END_VENC_8D1_2;
}

VO_DEV VoDev;
      VO_CHN VoChn;
      VO_PUB_ATTR_S stVoPubAttr,stVoPubAttrSD;
SAMPLE_VO_MODE_E enVoMode;
HI_U32 u32WndNum;
VPSS_CHN VpssChn_VoHD0 = VPSS_PRE0_CHN;
VO_WBC_ATTR_S stWbcAttr;

MPP_CHN_S stSrcChn, stDestChn;

/******************************************
   step 3: start vitual vo
******************************************/

printf("start vo VO_VIRT_DEV_0.\n");
VoDev = VO_VIRT_DEV_0;
u32WndNum = 4;
enVoMode = VO_MODE_4MUX;
stVoPubAttr.enIntfSync = VO_OUTPUT_PAL;
stVoPubAttr.enIntfType = VO_INTF_CVBS;
stVoPubAttr.u32BgColor = 0x000000ff;
stVoPubAttr.bDoubleFrame = HI_FALSE;
s32Ret = SAMPLE_COMM_VO_StartDevLayer(VoDev, &stVoPubAttr, 25);
if (HI_SUCCESS != s32Ret)
{
   SAMPLE_PRT("SAMPLE_COMM_VO_StartDevLayer failed!\n");
   goto END_8D1_3;
}

s32Ret = SAMPLE_COMM_VO_StartChn(VoDev, &stVoPubAttr, enVoMode);
if (HI_SUCCESS != s32Ret)
{
   SAMPLE_PRT("SAMPLE_COMM_VO_StartChn failed!\n");
   goto END_8D1_4;
}
for(i = 0; i < u32WndNum;i++)
{
VoChn = i;
VpssGrp = 0;
s32Ret = SAMPLE_COMM_VO_BindVpss(VoDev,VoChn,VpssGrp,VpssChn_VoHD0);
if (HI_SUCCESS != s32Ret)
{
SAMPLE_PRT("Start VO failed!\n");
goto END_8D1_5;
}

}

stGrpAttr.u32MaxW = stSize.u32Width;
stGrpAttr.u32MaxH = stSize.u32Height;
stGrpAttr.bDrEn = HI_FALSE;
stGrpAttr.bDbEn = HI_FALSE;
stGrpAttr.bIeEn = HI_TRUE;
stGrpAttr.bNrEn = HI_TRUE;
stGrpAttr.bHistEn = HI_TRUE;
stGrpAttr.enDieMode = VPSS_DIE_MODE_AUTO;
stGrpAttr.enPixFmt = SAMPLE_PIXEL_FORMAT;

s32Ret = SAMPLE_COMM_VPSS_Start_2(1, &stSize, VPSS_MAX_CHN_NUM,&stGrpAttr);
if (HI_SUCCESS != s32Ret)
{
SAMPLE_PRT("Start Vpss failed!\n");
goto END_VENC_8D1_1;
}

stSrcChn.enModId = HI_ID_VOU;
stSrcChn.s32DevId = VoDev;
stSrcChn.s32ChnId = 0;

stDestChn.enModId = HI_ID_VPSS;
stDestChn.s32DevId = 1;//VpssGrp;
stDestChn.s32ChnId = 0;

s32Ret = HI_MPI_SYS_Bind(&stSrcChn, &stDestChn);
if (s32Ret != HI_SUCCESS)
{
SAMPLE_PRT("failed with %#x!\n", s32Ret);
}

/******************************************
   step 4: select rc mode
******************************************/

enRcMode = SAMPLE_RC_VBR/*SAMPLE_RC_CBR*/;
/******************************************
   step 5: start stream venc (big + little)
******************************************/
for (i=0; i {
      /*** main stream **/
      VencGrp = i*2;
      VencChn = i*2;
      VpssGrp = i;
      s32Ret = SAMPLE_COMM_VENC_Start(VencGrp, VencChn, enPayLoad[0],\
                                    gs_enNorm, enSize[0], enRcMode);
      if (HI_SUCCESS != s32Ret)
      {
         SAMPLE_PRT("Start Venc failed!\n");
         goto END_VENC_8D1_2;
      }

stSrcChn.enModId = HI_ID_VPSS;
stSrcChn.s32DevId = 1;//VpssGrp;
stSrcChn.s32ChnId = VpssChn_VoHD0;

stDestChn.enModId = HI_ID_GROUP;
stDestChn.s32DevId = VencGrp;
stDestChn.s32ChnId = 0;
s32Ret = HI_MPI_SYS_Bind(&stSrcChn, &stDestChn);
if (s32Ret != HI_SUCCESS)
{
SAMPLE_PRT("failed with %#x!\n", s32Ret);
}

}

/******************************************
   step 6: stream venc process -- get stream, then save it to file.
******************************************/
s32Ret = SAMPLE_COMM_VENC_StartGetStream(u32ViChnCnt/**2*/);
if (HI_SUCCESS != s32Ret)
{
      SAMPLE_PRT("Start Venc failed!\n");
      goto END_VENC_8D1_3;
}
else
{
return s32Ret;
}

falloutmx

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falloutmx 2017-01-04 10:44:12

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第一个vpss是为了配合虚拟vo做叠加，第二个vpss是为了做缩放。没给数据的问题你可以看下logmpp和vpss的信息。

虚拟VO用1080P都没问题，只是行为模式类似标清通道。

feiyashan

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feiyashan 2017-01-04 14:09:02

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[quote][url=forum.php?mod=redirect&goto=findpost&pid=43707&ptid=13859]falloutmx 发表于 2017-1-4 10:44[/url]
第一个vpss是为了配合虚拟vo做叠加，第二个vpss是为了做缩放。没给数据的问题你可以看下logmpp和vpss的信息 ...[/quote]

谢谢大神回复，我看了/proc/umap/vpss，第二个vpss group确实收不到虚拟vo发来的数据。如下：
# cat vpss

[VPSS] Version: [Hi3521_MPP_V1.0.4.0 Debug], Build Time[Jan 15 2013, 22:13:59]

-------------------------VPSS GRP ATTR-----------------------------------
GrpID MaxW MaxH  PixFmt DieMode DrEn DbEn IeEn NrEn  HistEn
   0    704    576 semi420    0    0    0    1    1    1
   1    704    576 semi420    0    0    0    1    1    1

-----------------------VPSS GRP FRAME CONTROL INFO-------------------------
GrpID bFilter Width  Height SrcFRate DstFRate
   0    0    0    0       -1       -1
   1    0    0    0       -1       -1

-------------------------VPSS GRP PARAM-----------------------------------
GrpID    Lum Cont Dark  Bright IeStr IeSharp SfStr TfStr  Motion DiStr  ChrmRg    NrW SfWin DisMode
   0    0    0    0    0    2    10    0    0    0    0    0    0    0    0
   1    0    0    0    0    2    10    0    0    0    0    0    0    0    0

-------------------------VPSS CHN PARAM---------------------------------
GrpID  Chn0Sp  Chn1Sp  Chn2Sp  Chn3Sp  Chn0Sf  Chn1Sf  Chn2Sf  Chn3Sf  Chn0Tf  Chn1Tf  Chn2Tf  Chn3Tf
   0    40    40    40    40    16    16    8    8    3    3    0    0
   1    40    40    40    40    16    16    8    8    3    3    0    0

-----------------------VPSS GRP PRESCALE INFO-------------------------
GrpID bPreScl  CapSel Width  Height totde
   0    OFF BOTH    0    0    0
   1    OFF BOTH    0    0    0

-------------------------VPSS CHN ATTR-----------------------------------
GrpId ChnID  Enable SpEn FrmWkEn    LW    RW    TW    BW
   0    0    1    0    1    2    2    2    2
   0    1    1    0    1    2    2    2    2
   0    2    1    0    1    2    2    2    2
   0    3    1    0    1    2    2    2    2
   0    4    1    0    1    2    2    2    2
   1    0    1    0    1    2    2    2    2
   1    1    1    0    1    2    2    2    2
   1    2    1    0    1    2    2    2    2
   1    3    1    0    1    2    2    2    2
   1    4    1    0    1    2    2    2    2

-------------------------VPSS CROP INFO-----------------------------------
GrpId  CropEn  CoorTp CoorX CoorY Width  Height  CapSel OriW OriH TrimWid TrimHgt
   0    0    RIT    0    0    0    0 BOTH    704    576    704    576
   1    0    RIT    0    0    0    0 BOTH    0    0    0    0

-------------------------VPSS GRP PIC QUEUE-------------------------
GrpID FreeLen BusyLen Delay
   0    7    0    0
   1    8    0    0

-----------------------VPSS GRP WORK STATUS-------------------------
GrpID    RecvPic  ViLost VdecLost    NewDo OldDo NewUnDo OldUnDo  NoHist StartFl  bStart  CostTm MaxCostTm
   0       3618    0          0       3618    0    0 17856    0    0    1 1088    1108
   1          0    0          0          0    0    0    0    0    0    1    0       0

-----------------------VPSS CHN WORK STATUS-------------------------
GrpID ChnID WorkMode Depth    SendOk  bConfident    bDouble    CapSel
   0    0       USER    0          0          0       --       BOTH
   0    1       USER    0          0          0       --       BOTH
   0    2       USER    0    14468          1          0       --
   0    3       USER    0          0          0       --       --
   0    4       USER    0          0          0       --       --
   1    0       USER    0          0          0       --       BOTH
   1    1       USER    0          0          0       --       BOTH
   1    2       USER    0          0          0          0       --
   1    3       USER    0          0          0       --       --
   1    4       USER    0          0          0       --       --

-----------------------TIMER WORK STATUS-------------------------
   CntPerSec  MaxCntPerSec       CostTm MostCostTm  CostTmPerSec MCostTmPerSec
         100          101          14          20          683          782

-------------------------DRV WORK STATUS-----------------------------------
StartSuc0 StartSuc1    LinkInt    NodeInt StartErr0  NodeIdErr0 StartErr1  NodeIdErr1    BusErr
      3618          0       3618          0          0          0          0          0          0

-------------------------DRV NODE QUEUE-----------------------------------
FreeNum WaitNum  Busy00  Busy01 Sel0  Busy10  Busy11 Sel1
   128    0    0    0    0    0    0    0

-----------------------INT WORK STATUS-------------------------
   CntPerSec  MaxCntPerSec       CostTm MostCostTm  CostTmPerSec MCostTmPerSec
         25          25          18          24          376          428

vi -> vpss ->虚拟vo -> vpss -> venc，加粗的这部分没有数据流向，即虚拟vo -> vpss，不知道为什么