8.3. API Reference¶
This function module provides the following APIs to users:
CVI_VDEC_CreateChn: CreateVideo DecodingChannel.
CVI_VDEC_DestroyChn: DestroyVideo DecodingChannel.
CVI_VDEC_ResetChn: Reset the video decoding channel.
CVI_VDEC_GetChnAttr: GetVideo DecodingChannel attributes.
CVI_VDEC_SetChnAttr: SetVideo DecodingChannel attributes.
CVI_VDEC_StartRecvStream: DecodingdevicestartReceiveUserSendBitstream.
CVI_VDEC_StopRecvStream: DecodingdevicestopReceiveUserSendBitstream.
CVI_VDEC_QueryStatus: QueryDecoding channelStatus.
CVI_VDEC_SetChnParam: SetDecoding channelParameter.
CVI_VDEC_GetChnParam: GetDecoding channelParameter.
CVI_VDEC_SendStream: toVideo DecodingChannelSendBitstreamData.
CVI_VDEC_GetFrame: GetVideo DecodingChannelDecodingImage.
CVI_VDEC_ReleaseFrame: ReleaseVideo DecodingChannelDecodingImage.
CVI_VDEC_SetModParam: SetDecodingrelated moduleParameter.
CVI_VDEC_GetModParam: GetDecodingrelated moduleParameter.
CVI_VDEC_AttachVbPool: willDecoding channelbind to a video buffer VB poolin.
CVI_VDEC_DetachVbPool: willDecoding channelunbind from a video buffer VB unbind from the pool.
8.3.1. CVI_VDEC_CreateChn¶
Description
CreateVideo DecodingChannel.
Syntax
CVI_S32 CVI_VDEC_CreateChn(VDEC_CHN VdChn, const VDEC_CHN_ATTR_S *pstAttr); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Video decoding channel number. | Input |
pstAttr | Decoding channelAttributePointer. | Input |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
The VDEC module supports PT_JPEG and PT_MJPEG.
systemInsufficient memorytimewillReturn CVII_ERR_VDEC_NOMEM Error Codes.
UseJPEG/MJPEGtimeinCreateDecodingChannelbeforefirstCreateto VDEC mode block VB pool, notsameProtocolDecodingrequiredImage VB blockSizenotsame, canReference
sample_vdec_lib.cinvdecInitVBPoolfunction.
Example
CVI_S32 SAMPLE_COMM_VDEC_Start(vdecChnCtx *pvdchnCtx) { //SetVDEC RelatedParameter VDEC_CHN_ATTR_S stChnAttr, *pstChnAttr = &stChnAttr; VDEC_CHN VdecChn = pvdchnCtx->VdecChn; SAMPLE_VDEC_ATTR *psvdattr = &pvdchnCtx->stSampleVdecAttr; VDEC_CHN_PARAM_S stChnParam; pstChnAttr->enType = psvdattr->enType; pstChnAttr->enMode = psvdattr->enMode; pstChnAttr->u32PicWidth = psvdattr->u32Width; pstChnAttr->u32PicHeight = psvdattr->u32Height; pstChnAttr->u32StreamBufSize = psvdattr->u32Width * psvdattr->u32Height; pstChnAttr->u32FrameBufCnt = psvdattr->u32FrameBufCnt; //JPEG, MJPEG 需要SetVB buffer if (psvdattr->enType == PT_JPEG || psvdattr->enType == PT_MJPEG) { pstChnAttr->enMode = VIDEO_MODE_FRAME; pstChnAttr->u32FrameBufSize = VDEC_GetPicBufferSize( pstChnAttr->enType, psvdattr->u32Width, psvdattr->u32Height, psvdattr->stSapmleVdecPicture.enPixelFormat, DATA_BITWIDTH_8, 0); } //CreateVDECChannel CHECK_CHN_RET(CVI_VDEC_CreateChn(VdecChn, pstChnAttr), VdecChn, "CVI_VDEC_CreateChn"); //确认目前default Parameter CHECK_CHN_RET(CVI_VDEC_GetChnParam(VdecChn, &stChnParam), VdecChn, "CVI_VDEC_GetChnParam"); if (psvdattr->enType == PT_JPEG || psvdattr->enType == PT_MJPEG) { stChnParam.stVdecPictureParam.enPixelFormat = psvdattr->stSapmleVdecPicture.enPixelFormat; stChnParam.stVdecPictureParam.u32Alpha = psvdattr->stSapmleVdecPicture.u32Alpha; } //Setdisplay frame..等Parameter stChnParam.u32DisplayFrameNum = psvdattr->u32DisplayFrameNum; //SetVDEC Parameter CHECK_CHN_RET(CVI_VDEC_SetChnParam(VdecChn, &stChnParam), VdecChn, "CVI_MPI_VDEC_GetChnParam"); //Enable VDEC frame 传输 CHECK_CHN_RET(CVI_VDEC_StartRecvStream(VdecChn), VdecChn, "CVI_MPI_VDEC_StartRecvStream"); return CVI_SUCCESS; } Related Topics
8.3.2. CVI_VDEC_DestroyChn¶
Description
DestroyVideo DecodingChannel.
Syntax
CVI_S32 CVI_VDEC_DestroyChn(VDEC_CHN VdChn); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Video decoding channel number. | Input |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
the channel must have been created before destruction; otherwise, the function returnsChannelnot createdError.
DestroybeforemuststopReceiveBitstream (orusernotstartReceiveBitstream), otherwisereturns an error.
Example
None.
Related Topics
8.3.3. CVI_VDEC_ResetChn¶
Description
Reset the channel.
Syntax
CVI_S32 CVI_VDEC_ResetChn(VDEC_CHN VdChn); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Channel number. | Input |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
Reset anddoes not existChannel, ReturnFailureCVI_FAILURE.
If aChannelnothasstopReceiveBitstreamwhile reset Channel, thenReturnFailure.
Example
None.
8.3.4. CVI_VDEC_GetChnAttr¶
Description
GetVideo DecodingChannel attributes.
Syntax
CVI_S32 CVI_VDEC_GetChnAttr(VDEC_CHN VdChn, VDEC_CHN_ATTR_S *pstAttr); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Video decoding channel number. | Input |
pstAttr | Decoding channelAttributePointer. | Output |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
VDEC Channelmust already be created.
thisfunctionUsually in CVI_VDEC_SetChnAttr beforeUse, orisinGetdecoder framebeforecall, withverifyChannelnormal.
Example
See also sample_common_vdec.c in the SAMPLE_COMM_VDEC_GetPic function.
CVI_VOID *SAMPLE_COMM_VDEC_GetPic(CVI_VOID *pArgs) { VDEC_THREAD_PARAM_S *pstVdecThreadParam = (VDEC_THREAD_PARAM_S *)pArgs; FILE *fp = CVI_NULL; CVI_S32 s32Ret, s32Cnt = 0; VDEC_CHN_ATTR_S stAttr; VIDEO_FRAME_INFO_S stVFrame; CVI_CHAR cSaveFile[256]; prctl(PR_SET_NAME, "VdecGetPic", 0, 0, 0); s32Ret = CVI_VDEC_GetChnAttr(pstVdecThreadParam->s32ChnId, &stAttr); if (s32Ret != CVI_SUCCESS) { CVI_VDEC_ERR("chn %d get chn attr fail for %#x!\n", pstVdecThreadParam->s32ChnId, s32Ret); return (CVI_VOID *)(CVI_FAILURE); } if (stAttr.enType != PT_JPEG) { CVI_VDEC_ERR("chn %d enType %d do not support save file!\n", pstVdecThreadParam->s32ChnId, stAttr.enType); return (CVI_VOID *)(CVI_FAILURE); } while (1) { if (pstVdecThreadParam->eThreadCtrl == THREAD_CTRL_STOP) break; s32Ret = CVI_VDEC_GetFrame( pstVdecThreadParam->s32ChnId, &stVFrame, pstVdecThreadParam->s32MilliSec); CVI_VDEC_TRACE("leave CVI_VDEC_GetFrame %d\n", s32Ret); ... ... } } Related Topics
8.3.5. CVI_VDEC_SetChnAttr¶
Description
SetVideo DecodingChannel attributes.
Syntax
CVI_S32 CVI_VDEC_SetChnAttr(VDEC_CHN VdChn, const VDEC_CHN_ATTR_S *pstAttr); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Video decoding channel number. | Input |
pstAttr | Decoding channelAttributePointer. | Input |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
VDEC Channelmust already be created.
Channel attributesbeforemust firststopReceiveBitstream, otherwisereturns an error.
Example
None.
Related Topics
8.3.6. CVI_VDEC_StartRecvStream¶
Description
DecodingdevicestartReceiveUserSendBitstream.
Syntax
CVI_S32 CVI_VDEC_StartRecvStream(VDEC_CHN VdChn); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Video decoding channel number. | Input |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
bootReceiveBitstreambeforemust ensureChannelmust have been created; otherwise, the function returnsError.
Example
See CVI_VDEC_CreateChn Example
Related Topics
8.3.7. CVI_VDEC_StopRecvStream¶
Description
DecodingdevicestopReceiveUserSendBitstream.
Syntax
CVI_S32 CVI_VDEC_StopRecvStream(VDEC_CHN VdChn); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Video decoding channel number. | Input |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
CallthisInterface, mustin CVI_VDEC_DestroyChn before.
Example
See sample_common_vdec.c inSAMPLE_COMM_VDEC_Stop:
CVI_S32 SAMPLE_COMM_VDEC_Stop(CVI_S32 s32ChnNum) { CVI_S32 i; for (i = 0; i < s32ChnNum; i++) { CHECK_CHN_RET(CVI_VDEC_DestroyChn(i), i, "CVI_MPI_VDEC_DestroyChn"); CHECK_CHN_RET(CVI_VDEC_StopRecvStream(i), i, "CVI_MPI_VDEC_StopRecvStream"); } return CVI_SUCCESS; } Related Topics
None.
8.3.8. CVI_VDEC_QueryStatus¶
Description
QueryDecoding channelStatus.
Syntax
CVI_S32 CVI_VDEC_QueryStatus(VDEC_CHN VdChn, VDEC_CHN_STATUS_S *pstStatus); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Video decoding channel number. | Input |
pstStatus | Video DecodingChannelStatusStructurePointer | Output |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
QueryDecoding channelStatusbeforemust ensureChannelmust have been created; otherwise, the function returnsError.
Example
See also
sample_common_vdec.cinofSAMPLE_COMM_VDEC_CmdCtrlmethod.CVI_VDEC_QueryStatus UsercanQuerywithunderInformation:
enType: decodingFormat.
bStartRecvStream: Whetheralreadystartsendframegivedecodingdevice.
u32DecodeStreamFrames: alreadydecodingframenumber.
u32LeftPics: remainingimageframenumber.
stVdecDecErr: decodingdeviceErrorStatus (s32FormatErr: FormatError Codes, s32PicSizeErrSet: imageSizeError, s32StreamUnsprt: notBitstreamFormat…).
Related Topics
None.
8.3.9. CVI_VDEC_SetChnParam¶
Description
SetDecoding channelParameter.
Syntax
CVI_S32 CVI_VDEC_SetChnParam(VDEC_CHN VdChn, const VDEC_CHN_PARAM_S *pstParam); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Video decoding channel number. | Input |
pstParam | ChannelParameter. | Input |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
SetDecoding channelParameterbeforemust ensureChannelmust have been created; otherwise, the function returnsError.
Example
See sample_common_vdec.c inSAMPLE_COMM_VDEC_Startfunction:
CVI_S32 SAMPLE_COMM_VDEC_Start(vdecChnCtx *pvdchnCtx) { VDEC_CHN_ATTR_S stChnAttr, *pstChnAttr = &stChnAttr; VDEC_CHN VdecChn = pvdchnCtx->VdecChn; SAMPLE_VDEC_ATTR *psvdattr = &pvdchnCtx->stSampleVdecAttr; VDEC_CHN_PARAM_S stChnParam; pstChnAttr->enType = psvdattr->enType; pstChnAttr->enMode = psvdattr->enMode; pstChnAttr->u32PicWidth = psvdattr->u32Width; pstChnAttr->u32PicHeight = psvdattr->u32Height; pstChnAttr->u32StreamBufSize = psvdattr->u32Width * psvdattr->u32Height; pstChnAttr->u32FrameBufCnt = psvdattr->u32FrameBufCnt; if (psvdattr->enType == PT_JPEG || psvdattr->enType == PT_MJPEG) { pstChnAttr->enMode = VIDEO_MODE_FRAME; pstChnAttr->u32FrameBufSize = VDEC_GetPicBufferSize( pstChnAttr->enType, psvdattr->u32Width, psvdattr->u32Height, psvdattr->stSapmleVdecPicture.enPixelFormat, DATA_BITWIDTH_8, 0); } CHECK_CHN_RET(CVI_VDEC_CreateChn(VdecChn, pstChnAttr), VdecChn, "CVI_VDEC_CreateChn"); CHECK_CHN_RET(CVI_VDEC_GetChnParam(VdecChn, &stChnParam), VdecChn, "CVI_VDEC_GetChnParam"); if (psvdattr->enType == PT_JPEG || psvdattr->enType == PT_MJPEG) { stChnParam.stVdecPictureParam.enPixelFormat = psvdattr->stSapmleVdecPicture.enPixelFormat; stChnParam.stVdecPictureParam.u32Alpha = psvdattr->stSapmleVdecPicture.u32Alpha; } stChnParam.u32DisplayFrameNum = psvdattr->u32DisplayFrameNum; CHECK_CHN_RET(CVI_VDEC_SetChnParam(VdecChn, &stChnParam), VdecChn, "CVI_MPI_VDEC_GetChnParam"); CHECK_CHN_RET(CVI_VDEC_StartRecvStream(VdecChn), VdecChn, "CVI_MPI_VDEC_StartRecvStream"); return CVI_SUCCESS; } Related Topics
None.
8.3.10. CVI_VDEC_GetChnParam¶
Description
GetDecoding channelParameter.
Syntax
CVI_S32 CVI_VDEC_GetChnParam(VDEC_CHN VdChn, VDEC_CHN_PARAM_S *pstParam); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Video decoding channel number. | Input |
pstParam | ChannelParameter. | Output |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
GetDecoding channelParameterbeforemust ensureChannelmust have been created; otherwise, the function returnsError.
Example
See also sample_common_vdec.c inSAMPLE_COMM_VDEC_Startfunction.
Related Topics
8.3.11. CVI_VDEC_SendStream¶
Description
SendBitstreamDatatoVideo DecodingChannel.
Syntax
CVI_S32 CVI_VDEC_SendStream(VDEC_CHN VdChn, const VDEC_STREAM_S *pstStream, CVI_S32 s32MilliSec); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Video decoding channel number. | Input |
pstStream | DecodingBitstreamDataPointer. | Input |
s32MilliSec | sendBitstreamMethodflag. Value Range: -1: Blocking. 0: Non-blocking othercurrentlynumber: Timeoutetc.pendingtime | Input |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
SendDatabeforemust ensurealreadyCall CVI_VDEC_CreateChn, CVI_VDEC_StartRecvStream.
thisInterfaceinmjpeg, jpegdecodingStatusunder, sendinLength0(pstStream->u32Len)willReturnCVI_SUCCESS;
decodingFailurewillError Codes: ERR_CVI_VDEC_SEND_STREAM.
Example
pleaseSee sample_common_vdec.c inSAMPLE_COMM_VDEC_SendStreamfunction.
Related Topics
None.
8.3.12. CVI_VDEC_GetFrame¶
Description
GetVideo DecodingChannelDecodingImage.
Syntax
CVI_S32 CVI_VDEC_GetFrame(VDEC_CHN VdChn, VIDEO_FRAME_INFO_S *pstFrameInfo, CVI_S32 s32MilliSec); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Video decoding channel number. | Input |
s32MilliSec | GetImageMethodflag. Value Range: -1: Blocking. 0: Non-blocking othercurrentlynumber: Timeoutetc.pendingtime | Input |
pstFrameInfo | GetDecodingImageInformation. | Output |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
GetDecodingImagetimemust ensureChannelalreadybeCreate, otherwisereturns an error.
Example
See sample_common_vdec.c in the SAMPLE_COMM_VDEC_GetPic function.
Related Topics
None.
8.3.13. CVI_VDEC_ReleaseFrame¶
Description
ReleaseVideo DecodingChannelImage.
Syntax
CVI_S32 CVI_VDEC_ReleaseFrame(VDEC_CHN VdChn, const VIDEO_FRAME_INFO_S *pstFrameInfo); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Video decoding channel number. | Input |
pstFrameInfo | DecodingafterImageInformationPointer | Input |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
thisInterfaceneed towith CVI_VDEC_GetFrame forUse, GetDatashouldWhen inUsecompleteofafter that isRelease, If notandtimeRelease, willcauseDecodingprocessblockingetc.pendingresource.
ReleaseDatamustis CVI_VDEC_GetFrame fromthisChannelGetData, notforData Structureperform anymodify.
ReleaseVideo DecodingChannelImagemustinChannelDestroybefore.
Example
None.
Related Topics
None.
8.3.14. CVI_VDEC_SetModParam¶
Description
SetDecodingrelated moduleParameter.
Syntax
CVI_S32 CVI_VDEC_SetModParam(const VDEC_PARAM_MOD_S *pstModParam); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
pstModParam | DecodingModuleParameterPointer. | Input |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
thisInterfacecaninChannelCreatebeforeaftercall.
thisInterfacemainused to SetcorrespondingDecodingVB poolGetMethod, UsercanthroughStructure VDEC_PARAM_MOD_S in
VB_SOURCE_ETypevariableSetVB mode.
Example
None.
8.3.15. CVI_VDEC_GetModParam¶
Description
GetDecodingrelated moduleParameter.
Syntax
CVI_S32 CVI_VDEC_GetModParam(VDEC_PARAM_MOD_S *pstModParam); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
pstModParam | DecodingModuleParameterPointer. | Output |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
Usually in CVI_VDEC_SetModParam callbeforeUse.
Example
None.
8.3.16. CVI_VDEC_AttachVbPool¶
Description
willDecoding channelbind to a video buffer VB poolin.
Syntax
CVI_S32 CVI_VDEC_AttachVbPool(VDEC_CHN VdChn, const VDEC_CHN_POOL_S *pstPool); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Channel number. | Input |
pstPool | VideocacheVB pool Id number | Input |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
The channel must have been created; otherwise, the CVI_FAILURE error code is returned.
The user must call CVI_VB_CreatePool to create a video buffer VB pool, then call the interface CVI_VDEC_AttachVbPool currentEncoding channelBindtofixed PoolId VB pool Medium. canmultipleEncoding channelBindtosamea VB poolin, butisnotcansameaEncoding channel tomultiple VB poolin.
pstPool mustisalready created VB poolValid PoolId, includingstorage Picture VB poolandstoragestorage Picture Information VB pool.
UserCallthisInterface, mustdeterminethrough CVI_VDEC_SetModParam SetinVB_SOURCE_USERMode.
Example
None.
8.3.17. CVI_VDEC_DetachVbPool¶
Description
willDecoding channelunbind from a video buffer VB unbind from the pool.
Syntax
CVI_S32 CVI_VDEC_DetachVbPool(VDEC_CHN VdChn); Parameters
Parameter Name | Description | Input/Output |
|---|---|---|
VdChn | Channel number. | Input |
Return Value
Return Value | Description |
|---|---|
0 | Success |
Non-zero | Failure; its value is Error Codes. |
Requirements
Header files: cvi_vdec.h, cvi_comm_video.h, cvi_comm_vdec.h
Library files: libvdec.so/libvdec.a
Note
The channel must have been created; otherwise, the CVI_FAILURE error code is returned.
Example
None.