/** @brief look for new data and store it in the local buffer
@param usec_timeout wait until new data is found, max timeout usecs.
-1: wait endless
- NULL: no timeout
+ 0: return instantly
+ @param usec_timeout_remaining if non-NULL the function will write the
+ not used time to the given target
@retval true if new data was found (does not mean that the received data
is a complete packet though)
*/
- virtual bool fill_buffer(long long usec_timeout=-1)=0;
+ virtual bool fill_buffer(long long usec_timeout=-1,long long* usec_timeout_remaining=NULL)=0;
+
bool get_packet(std::string& data);
+ unsigned int peek_packet(std::string& data);
+
/// returns true if a complete data packet is in the buffer. retrieve it with get_packet().
bool packet_available()
{ return bytes_available(); }