63 struct callbackObject {  struct
68     callbackObject(int32_t index, AMediaCodecBufferInfo* info)  in callbackObject()  argument
71     callbackObject(int32_t index) : bufferIndex{index}, isInput{true} {}  in callbackObject()  function
73     callbackObject() : bufferIndex{-1}, isInput{false} {}  in callbackObject()  function
80     std::list<callbackObject> mCbInputQueue;
81     std::list<callbackObject> mCbOutputQueue;
90     void pushToInputList(callbackObject element);
91     void pushToOutputList(callbackObject element);
92     callbackObject getInput();
93     callbackObject getOutput();
94     callbackObject getWork();