SetDecodedData
virtual status_t SetDecodedData(BPositionIO *data);
virtual status_t SetDecodedData(BPositionIO *data);
virtual status_t SetDecodedData(const void *data, size_t length /* data to attach */);
virtual status_t SetDecodedData(BPositionIO *data);
virtual status_t SetDecodedData(BPositionIO *data);
virtual status_t SetDecodedData(BPositionIO *data);
SetDecodedData(file);
_data->SetDecodedData(data);
attach->SetDecodedData(data,len);
comp->SetDecodedData(&io);
comp->SetDecodedData(&io);