Function Usage

Template function, which requests data from a specified element in a specified service stream. When the memory is insufficient, an exception is thrown in the function. Multi-thread concurrency is not supported.

If the specified element is the appsink plugin, the received data is Packet<std::shared_ptr<MxstBufferOutput>>.
If other elements are specified, the corresponding metadata is obtained, including Packet<std::shared_ptr<MxVisionList>>, Packet<std::shared_ptr<MxTensorPackageList>>, Packet<std::shared_ptr<MxObjectList>>, Packet<std::shared_ptr<MxImageMaskList>>, Packet<std::shared_ptr<MxClassList>>, Packet<std::shared_ptr<MxPoseList>>, Packet<std::shared_ptr<MxTextObjectList>>, and Packet<std::shared_ptr<MxTextsInfoList>>.

Prototype

template <class T>
APP_ERROR MxStreamManager::GetPacket(Packet<T>& packet, const std::string& streamName, const std::string& outElement, const uint32_t& msTimeOut = DELAY_TIME)

Parameters

Parameter	Input/Output	Description
packet	Output	Data output by the specified element
streamName	Input	Stream name
outElement	Input	Element name
msTimeOut	Input	Maximum waiting time, in milliseconds. The default value is 3000 ms (3s).

Response Parameters

Data Structure	Description
APP_ERROR	For details about the returned error codes, see APP_ERROR Description.