Init

Function Usage

DVPP initialization function, which must be used together with DeInit.

It does not support video decoding and video encoding. For the video decoding initialization, use InitVdec; for the video encoding initialization, use InitVenc. After initialization, call the deinitialization function of the corresponding function to destroy resources.

Prototype

APP_ERROR DvppWrapper::Init(void);  // Applicable to the Atlas 200/300/500 inference product.

APP_ERROR DvppWrapper::Init(MxbaseDvppChannelMode dvppChannelMode);  // Applicable to the Atlas 200/300/500 inference product and Atlas inference products.

Parameter Description

Parameter	Input/Output	Description
dvppChannelMode	Input	Channel mode. MXBASE_DVPP_CHNMODE_DEFAULT = 0 // For the Atlas 200/300/500 inference product, the default value is 0, including VPC, JPEGD, JPEGE, and PNG. For the Atlas inference products, the following parameters must be specified: MXBASE_DVPP_CHNMODE_VPC = 1 // Image cropping and resizing MXBASE_DVPP_CHNMODE_JPEGD = 2 // Image decoding MXBASE_DVPP_CHNMODE_JPEGE = 3 // Image encoding MXBASE_DVPP_CHNMODE_PNGD = 4 // PNG decoding

Parameter

Input/Output

Description

dvppChannelMode

Input

Channel mode.

MXBASE_DVPP_CHNMODE_DEFAULT = 0 // For the Atlas 200/300/500 inference product, the default value is 0, including VPC, JPEGD, JPEGE, and PNG.
For the Atlas inference products, the following parameters must be specified:
- MXBASE_DVPP_CHNMODE_VPC = 1 // Image cropping and resizing
- MXBASE_DVPP_CHNMODE_JPEGD = 2 // Image decoding
- MXBASE_DVPP_CHNMODE_JPEGE = 3 // Image encoding
- MXBASE_DVPP_CHNMODE_PNGD = 4 // PNG decoding

Return Parameter Description

Data Structure	Description
APP_ERROR	Error code returned during program execution. For details, see the MxBase/ErrorCode/ErrorCode.h file.

Parent topic: DvppWrapper