我想将视频解码后的帧数据传回到A8，然后保存为jpg图像（为了实现一个截图功能）；
但是在创建穿回到Host的LinkId: SYSTEM_HOST_LINK_ID_IPC_FRAMES_IN_0 时触发了SIGFPE异常。
有人知道应该怎么修改LinkChain，或者其他的截图方法吗？
以下是我创建LingChain的代码：
void mcfw_mp4_dec_dis_chain_crate()
{
/* link used */
gVdecModuleContext.ipcBitsOutHLOSId = SYSTEM_HOST_LINK_ID_IPC_BITS_OUT_0;
gVdecModuleContext.ipcBitsInRTOSId = SYSTEM_VIDEO_LINK_ID_IPC_BITS_IN_0;
gVdecModuleContext.decId = SYSTEM_LINK_ID_VDEC_0;
gMultiCh_VdecVdisObj.videoDupId = SYSTEM_VIDEO_LINK_ID_DUP_0;
gMultiCh_VdecVdisObj.ipcOutVideo2VpssId = SYSTEM_VIDEO_LINK_ID_IPC_OUT_M3_0;
gMultiCh_VdecVdisObj.ipcOutVideo2HostId = SYSTEM_VIDEO_LINK_ID_IPC_FRAMES_OUT_0;
gMultiCh_VdecVdisObj.ipcInVpssId = SYSTEM_VPSS_LINK_ID_IPC_IN_M3_0;
gMultiCh_VdecVdisObj.ipcInHostId = SYSTEM_HOST_LINK_ID_IPC_FRAMES_IN_0;
gVdisModuleContext.swMsId[0] = SYSTEM_LINK_ID_SW_MS_MULTI_INST_0;
gVdisModuleContext.displayId[0] = SYSTEM_LINK_ID_DISPLAY_0; // ON AND OFF CHIP HDMI
/* init link params */
IpcBitsOutLinkHLOS_CreateParams ipcBitsOutHostPrm;
IpcBitsInLinkRTOS_CreateParams ipcBitsInVideoPrm;
DecLink_CreateParams decPrm;
DupLink_CreateParams videoDupPrm;
IpcFramesOutLinkRTOS_CreateParams ipcOutVideo2VpssPrm;
IpcFramesOutLinkRTOS_CreateParams ipcOutVideo2HostPrm;
IpcFramesInLinkRTOS_CreateParams ipcInVpssPrm;
IpcFramesInLinkHLOS_CreateParams ipcFramesInHostPrm;
SwMsLink_CreateParams swMsPrm[VDIS_DEV_MAX];
DisplayLink_CreateParams displayPrm[VDIS_DEV_MAX];
UInt32 i;
MULTICH_INIT_STRUCT(IpcBitsOutLinkHLOS_CreateParams,ipcBitsOutHostPrm);
MULTICH_INIT_STRUCT(IpcBitsInLinkRTOS_CreateParams,ipcBitsInVideoPrm);
MULTICH_INIT_STRUCT(DecLink_CreateParams, decPrm);
MULTICH_INIT_STRUCT(IpcFramesOutLinkRTOS_CreateParams,ipcOutVideo2VpssPrm);
MULTICH_INIT_STRUCT(IpcFramesOutLinkRTOS_CreateParams,ipcOutVideo2HostPrm);
MULTICH_INIT_STRUCT(IpcFramesInLinkRTOS_CreateParams,ipcInVpssPrm);
MULTICH_INIT_STRUCT(IpcFramesInLinkHLOS_CreateParams,ipcFramesInHostPrm);
for (i = 0; i < VDIS_DEV_MAX; ++i)
{
MULTICH_INIT_STRUCT(DisplayLink_CreateParams,displayPrm[i]);
MULTICH_INIT_STRUCT(SwMsLink_CreateParams ,swMsPrm[i]);
}
/* ipc bits out host link */
ipcBitsOutHostPrm.baseCreateParams.outQueParams[0].nextLink= gVdecModuleContext.ipcBitsInRTOSId;
ipcBitsOutHostPrm.baseCreateParams.notifyNextLink = FALSE;
ipcBitsOutHostPrm.baseCreateParams.notifyPrevLink = FALSE;
ipcBitsOutHostPrm.baseCreateParams.noNotifyMode = TRUE;
ipcBitsOutHostPrm.baseCreateParams.numOutQue = 1;
ipcBitsOutHostPrm.inQueInfo.numCh = gVdecModuleContext.vdecConfig.numChn;
for (i=0; i<ipcBitsOutHostPrm.inQueInfo.numCh; i++)
{
ipcBitsOutHostPrm.inQueInfo.chInfo[i].width = gVdecModuleContext.vdecConfig.decChannelParams[i].maxVideoWidth;
ipcBitsOutHostPrm.inQueInfo.chInfo[i].height = gVdecModuleContext.vdecConfig.decChannelParams[i].maxVideoHeight;
ipcBitsOutHostPrm.inQueInfo.chInfo[i].scanFormat = SYSTEM_SF_PROGRESSIVE;
ipcBitsOutHostPrm.inQueInfo.chInfo[i].bufType = 0; // NOT USED
ipcBitsOutHostPrm.inQueInfo.chInfo[i].codingformat = 0; // NOT USED
ipcBitsOutHostPrm.inQueInfo.chInfo[i].dataFormat = 0; // NOT USED
ipcBitsOutHostPrm.inQueInfo.chInfo[i].memType = 0; // NOT USED
ipcBitsOutHostPrm.inQueInfo.chInfo[i].startX = 0; // NOT USED
ipcBitsOutHostPrm.inQueInfo.chInfo[i].startY = 0; // NOT USED
ipcBitsOutHostPrm.inQueInfo.chInfo[i].pitch[0] = 0; // NOT USED
ipcBitsOutHostPrm.inQueInfo.chInfo[i].pitch[1] = 0; // NOT USED
ipcBitsOutHostPrm.inQueInfo.chInfo[i].pitch[2] = 0; // NOT USED
// ipcBitsOutHostPrm.maxQueueDepth[i] = MAX_BUFFERING_QUEUE_LEN_PER_CH;
// ipcBitsOutHostPrm.chMaxReqBufSize[i] = (ipcBitsOutHostPrm.inQueInfo.chInfo[i].width * ipcBitsOutHostPrm.inQueInfo.chInfo[i].height);
// ipcBitsOutHostPrm.totalBitStreamBufferSize [i] = (ipcBitsOutHostPrm.chMaxReqBufSize[i] * BIT_BUF_LENGTH_LIMIT_FACTOR_HD);
}
/* ipc bits in video link */
ipcBitsInVideoPrm.baseCreateParams.inQueParams.prevLinkId = gVdecModuleContext.ipcBitsOutHLOSId;
ipcBitsInVideoPrm.baseCreateParams.inQueParams.prevLinkQueId = 0;
ipcBitsInVideoPrm.baseCreateParams.outQueParams[0].nextLink = gVdecModuleContext.decId;
ipcBitsInVideoPrm.baseCreateParams.noNotifyMode = TRUE;
ipcBitsInVideoPrm.baseCreateParams.notifyNextLink = TRUE;
ipcBitsInVideoPrm.baseCreateParams.notifyPrevLink = FALSE;
ipcBitsInVideoPrm.baseCreateParams.numOutQue = 1;
/* decode link */
for (i=0; i<ipcBitsOutHostPrm.inQueInfo.numCh; i++)
{
if(gVdecModuleContext.vdecConfig.decChannelParams[i].isCodec == VDEC_CHN_H264)
decPrm.chCreateParams[i].format = IVIDEO_H264HP;
else if(gVdecModuleContext.vdecConfig.decChannelParams[i].isCodec == VDEC_CHN_MPEG4)
decPrm.chCreateParams[i].format = IVIDEO_MPEG4ASP;
else if(gVdecModuleContext.vdecConfig.decChannelParams[i].isCodec == VDEC_CHN_MJPEG)
decPrm.chCreateParams[i].format = IVIDEO_MJPEG;
// else if(gVdecModuleContext.vdecConfig.decChannelParams[i].isCodec == VDEC_CHN_MPEG2)
// decPrm.chCreateParams[i].format = IVIDEO_MPEG2HP;
decPrm.chCreateParams[i].numBufPerCh = gVdecModuleContext.vdecConfig.decChannelParams[i].numBufPerCh;
decPrm.chCreateParams[i].profile = IH264VDEC_PROFILE_ANY;
decPrm.chCreateParams[i].displayDelay = gVdecModuleContext.vdecConfig.decChannelParams[i].displayDelay;
decPrm.chCreateParams[i].dpbBufSizeInFrames = IH264VDEC_DPB_NUMFRAMES_AUTO;
// if (gVdecModuleContext.vdecConfig.decChannelParams[i].fieldPicture) {
// OSA_printf("MULTICH_VDEC_VDIS:INFO ChId[%d] configured for field picture\n",i);
// decPrm.chCreateParams[i].processCallLevel = VDEC_FIELDLEVELPROCESSCALL;
// }
// else {
// decPrm.chCreateParams[i].processCallLevel = VDEC_FRAMELEVELPROCESSCALL;
// }
decPrm.chCreateParams[i].targetMaxWidth = ipcBitsOutHostPrm.inQueInfo.chInfo[i].width;
decPrm.chCreateParams[i].targetMaxHeight = ipcBitsOutHostPrm.inQueInfo.chInfo[i].height;
decPrm.chCreateParams[i].defaultDynamicParams.targetFrameRate = gVdecModuleContext.vdecConfig.decChannelParams[i].dynamicParam.frameRate;
decPrm.chCreateParams[i].defaultDynamicParams.targetBitRate = gVdecModuleContext.vdecConfig.decChannelParams[i].dynamicParam.targetBitRate;
// decPrm.chCreateParams[i].tilerEnable = FALSE;
// decPrm.chCreateParams[i].enableWaterMarking = gVdecModuleContext.vdecConfig.decChannelParams[i].enableWaterMarking;
}
decPrm.inQueParams.prevLinkId = gVdecModuleContext.ipcBitsInRTOSId;
decPrm.inQueParams.prevLinkQueId = 0;
decPrm.outQueParams.nextLink = gMultiCh_VdecVdisObj.videoDupId;
videoDupPrm.inQueParams.prevLinkId = gVdecModuleContext.decId;
videoDupPrm.inQueParams.prevLinkQueId = 0;
videoDupPrm.notifyNextLink = TRUE;
videoDupPrm.numOutQue = 2;
videoDupPrm.outQueParams[0].nextLink = gMultiCh_VdecVdisObj.ipcOutVideo2VpssId;
videoDupPrm.outQueParams[1].nextLink = gMultiCh_VdecVdisObj.ipcOutVideo2HostId;
/* ipc out video link */
ipcOutVideo2VpssPrm.baseCreateParams.inQueParams.prevLinkId = gMultiCh_VdecVdisObj.videoDupId;
ipcOutVideo2VpssPrm.baseCreateParams.inQueParams.prevLinkQueId = 0;
ipcOutVideo2VpssPrm.baseCreateParams.outQueParams[0].nextLink = gMultiCh_VdecVdisObj.ipcInVpssId;
ipcOutVideo2VpssPrm.baseCreateParams.notifyNextLink = TRUE;
ipcOutVideo2VpssPrm.baseCreateParams.notifyPrevLink = TRUE;
ipcOutVideo2VpssPrm.baseCreateParams.numOutQue = 1;
/* ipc out video link */
ipcOutVideo2HostPrm.baseCreateParams.inQueParams.prevLinkId = gMultiCh_VdecVdisObj.videoDupId;
ipcOutVideo2HostPrm.baseCreateParams.inQueParams.prevLinkQueId = 0;
ipcOutVideo2HostPrm.baseCreateParams.outQueParams[0].nextLink = gMultiCh_VdecVdisObj.ipcInHostId;
ipcOutVideo2HostPrm.baseCreateParams.notifyNextLink = TRUE;
ipcOutVideo2HostPrm.baseCreateParams.notifyPrevLink = TRUE;
ipcOutVideo2HostPrm.baseCreateParams.numOutQue = 1;
/* ipc in vpss link */
ipcInVpssPrm.baseCreateParams.inQueParams.prevLinkId = gMultiCh_VdecVdisObj.ipcOutVideo2VpssId;
ipcInVpssPrm.baseCreateParams.inQueParams.prevLinkQueId = 0;
ipcInVpssPrm.baseCreateParams.notifyNextLink = TRUE;
ipcInVpssPrm.baseCreateParams.notifyPrevLink = TRUE;
ipcInVpssPrm.baseCreateParams.numOutQue = 1;
ipcInVpssPrm.baseCreateParams.outQueParams[0].nextLink = gVdisModuleContext.swMsId[0];
/* ipc in host link */
ipcFramesInHostPrm.cbFxn = NULL;
ipcFramesInHostPrm.cbCtx = NULL;
ipcFramesInHostPrm.baseCreateParams.inQueParams.prevLinkId = gMultiCh_VdecVdisObj.ipcOutVideo2HostId;
ipcFramesInHostPrm.baseCreateParams.inQueParams.prevLinkQueId = 0;
ipcFramesInHostPrm.baseCreateParams.notifyNextLink = FALSE;
ipcFramesInHostPrm.baseCreateParams.notifyPrevLink = FALSE;
ipcFramesInHostPrm.baseCreateParams.numOutQue = 0;
/* sw mosaic link */
swMsPrm[0].numSwMsInst = 1;
swMsPrm[0].swMsInstId[0] = SYSTEM_SW_MS_SC_INST_DEIHQ_SC_NO_DEI;
swMsPrm[0].swMsInstStartWin[0] = 0;
swMsPrm[0].swMsInstStartWin[1] = 10;
swMsPrm[0].enableProcessTieWithDisplay = TRUE;
// swMsPrm[0].includeVipScInDrvPath = FALSE;
VDIS_DEV vdDevId = VDIS_DEV_HDMI;
swMsPrm[0].inQueParams.prevLinkId = gMultiCh_VdecVdisObj.ipcInVpssId;
swMsPrm[0].inQueParams.prevLinkQueId = 0;
swMsPrm[0].outQueParams.nextLink = gVdisModuleContext.displayId[0];
swMsPrm[0].numOutBuf = MULTICH_NUM_SWMS_MAX_BUFFERS;
swMsPrm[0].maxInputQueLen = SYSTEM_SW_MS_INVALID_INPUT_QUE_LEN;
swMsPrm[0].maxOutRes = VSYS_STD_1080P_60;
// swMsPrm[0].initOutRes = gVdisModuleContext.vdisConfig.deviceParams[VDIS_DEV_HDMI].resolution;
swMsPrm[0].lineSkipMode = FALSE;
swMsPrm[0].enableLayoutGridDraw = gVdisModuleContext.vdisConfig.enableLayoutGridDraw;
MultiCh_swMsGetDefaultLayoutPrm(vdDevId, &swMsPrm[0], FALSE); /* both from 0-16 chnl */
/* display link */
displayPrm[0].inQueParams[0].prevLinkId = gVdisModuleContext.swMsId[0];
displayPrm[0].inQueParams[0].prevLinkQueId = 0;
displayPrm[0].displayRes = VSYS_STD_1080P_60;
displayPrm[0].numInputQueues = 1;
/* create links */
System_linkCreate(gVdecModuleContext.ipcBitsOutHLOSId,&ipcBitsOutHostPrm,sizeof(ipcBitsOutHostPrm));
System_linkCreate(gVdecModuleContext.ipcBitsInRTOSId,&ipcBitsInVideoPrm,sizeof(ipcBitsInVideoPrm));
System_linkCreate(gVdecModuleContext.decId, &decPrm, sizeof(decPrm));
System_linkCreate(gMultiCh_VdecVdisObj.videoDupId , &videoDupPrm, sizeof(videoDupPrm));
System_linkCreate(gMultiCh_VdecVdisObj.ipcOutVideo2VpssId, &ipcOutVideo2VpssPrm, sizeof(ipcOutVideo2VpssPrm));
System_linkCreate(gMultiCh_VdecVdisObj.ipcOutVideo2HostId, &ipcOutVideo2HostPrm, sizeof(ipcOutVideo2HostPrm));
System_linkCreate(gMultiCh_VdecVdisObj.ipcInVpssId , &ipcInVpssPrm, sizeof(ipcInVpssPrm));
/* 运行这行代码时发生SIGFPE !!!!!!!! */
System_linkCreate(gMultiCh_VdecVdisObj.ipcInHostId , &ipcFramesInHostPrm, sizeof(ipcFramesInHostPrm));
System_linkCreate(gVdisModuleContext.swMsId[0] , &swMsPrm[0], sizeof(swMsPrm[0]));
System_linkCreate(gVdisModuleContext.displayId[0], &displayPrm[0], sizeof(displayPrm[0]));
}
