Function libeyelink_sys::eyelink_playback_start

pub unsafe extern "C" fn eyelink_playback_start() -> INT16

@ingroup playback Flushes data from queue and starts data playback. An EDF file must be open and have at least one recorded trial. Use \c eyelink_wait_for_data() to wait for data: this will time out if the playback failed. Playback begins from start of file or from just after the end of the next-but-last recording block. Link data is determined by file contents, not by link sample and event settings.

@return \c 0 if command sent OK, else link error.

\b Example:

\code

#include 
#include 

set_offline_mode();           // set up eye tracker for playback
eyelink_playback_start();     // start data playback

if(!eyelink_wait_for_block_start(2000, 1, 1))
{
printf("ERROR: playback data did not start!");
return -1;
}

while(1)   // Loop while data available
{
if(escape_pressed() || break_pressed() ||
eyelink_last_button_press(NULL))
{
eyelink_playback_stop(); // stop playback
return 0;
}

i = eyelink_get_next_data(NULL);   // check for new data item
if(i==0)	                       // 0: no new data
{   // Checks if playback has completed
if((eyelink_current_mode() & IN_PLAYBACK_MODE)==0) break;
}
...
...
}

eyelink_playback_stop();
\endcode

\sa \c eyelink_playback_stop() and \c eyelink_wait_for_block_start()