gst-nvdsvideotemplate/includes/nvdscustomlib_interface.hpp

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#ifndef __NVDSCUSTOMLIB_INTERFACE_HPP__
#define __NVDSCUSTOMLIB_INTERFACE_HPP__
 
#include <string>
#include <gst/gstbuffer.h>
 
enum class BufferResult {
    Buffer_Ok,      // Push the buffer from submit_input function
    Buffer_Drop,    // Drop the buffer inside submit_input function
    Buffer_Async,   // Return from submit_input function, custom lib to push the buffer
    Buffer_Error    // Error occured
};
 
struct DSCustom_CreateParams {
    GstBaseTransform *m_element;
    GstCaps *m_inCaps;
    GstCaps *m_outCaps;
    guint m_gpuId;
    cudaStream_t m_cudaStream;
    gboolean m_dummyMetaInsert;
    gboolean m_fillDummyBatchMeta;
};
 
struct Property
{
  Property(std::string arg_key, std::string arg_value) : key(arg_key), value(arg_value)
  {
  }
 
  std::string key;
  std::string value;
};
 
class IDSCustomLibrary
{
public:
    virtual bool SetInitParams (DSCustom_CreateParams *params) = 0;
    virtual bool SetProperty (Property &prop) = 0;
    virtual bool HandleEvent (GstEvent *event) = 0;
    virtual char* QueryProperties () = 0;
    virtual GstCaps* GetCompatibleCaps (GstPadDirection direction, GstCaps* in_caps, GstCaps* othercaps) = 0;
    virtual BufferResult ProcessBuffer (GstBuffer *inbuf) = 0;
    virtual ~IDSCustomLibrary() {};
};
 
#endif