KWS Plug-in
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Add the API of the KWS plug-in to the //foundation/ai/engine/services/server/plugin directory. This API is used to call AI capabilities. The following code snippet is an example API implementation of the KWS plug-in. The reference code is available at the //foundation/ai/engine/services/server/plugin/asr/keyword_spotting directory.
#include "plugin/i_plugin.h class KWSPlugin : public IPlugin { public: KWSPlugin(); ~KWSPlugin(); const long long GetVersion() const override; const char* GetName() const override; const char* GetInferMode() const override; int32_t Prepare(long long transactionId, const DataInfo &inputInfo, DataInfo &outputInfo) override; int32_t SetOption(int optionType, const DataInfo &inputInfo) override; int32_t GetOption(int optionType, const DataInfo &inputInfo, DataInfo &outputInfo) override; int32_t SyncProcess(IRequest *request, IResponse *&response) override; int32_t AsyncProcess(IRequest *request, IPluginCallback*callback) override; int32_t Release(bool isFullUnload, long long transactionId, const DataInfo &inputInfo) override; };
The preceding code implements the IPlugin API provided by the server. Table 1 shows the mapping between the client APIs and the plug-in APIs.
Table 1 Mapping between the client APIs and the plug-in APIs
Note:
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The AieClientInit and AieClientDestroy APIs are used to connect to and disconnect from the server, respectively. They are not called in the plug-in algorithm and therefore do not need to be defined in the plug-in.
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The KWS plug-in needs to use the PLUGIN_INTERFACE_IMPL statement to expose the function pointer. Otherwise, the plug-in cannot be properly loaded.
PLUGIN_INTERFACE_IMPL(KWSPlugin);
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