fuse Merge Request #30: improve the teletext datastream code (merged)

This code checks that an entire field of packet data is available in the socket read buffer, to avoid desynchronization through partial reads. It also discards data from the buffer in half-second chunks if it falls more than a second behind. This prevents buffered data accumulating whenever emulation is paused due to menu interaction etc. until the server eventually blocks and disconnects us.

[Sergio Baldoví]

Thank you Guesser. When I try to compile on linux I get this error:

peripherals/ttx2000s.c: In function ‘ttx2000s_field_event’:
peripherals/ttx2000s.c:357:9: warning: implicit declaration of function ‘ioctlsocket’ [-Wimplicit-function-declaration]
  357 |     if( ioctlsocket( teletext_socket, FIONREAD, &n ) == -1) {
      |         ^~~~~~~~~~~
peripherals/ttx2000s.c:357:39: error: ‘FIONREAD’ undeclared (first use in this function)
  357 |     if( ioctlsocket( teletext_socket, FIONREAD, &n ) == -1) {
      |                                       ^~~~~~~~

Can you fix it?

[Guesser]

whoops, that's the windows specific function. I'll move it to a compat function

[Sergio Baldoví]

Thank you. Merged in [8fd925].