static void network_test_delay(void)
{
int i, j;
BYTE new_frame_delta;
BYTE buf[0x60];
long packet_delay[NUM_OF_TESTPACKETS];
char st[256];
vsyncarch_init();
ui_display_statustext(translate_text(IDGS_TESTING_BEST_FRAME_DELAY), 0);
if (network_mode == NETWORK_SERVER_CONNECTED) {
for (i = 0; i < NUM_OF_TESTPACKETS; i++) {
*((unsigned long*)buf) = vsyncarch_gettime();
if (network_send_buffer(network_socket, buf, sizeof(buf)) < 0
|| network_recv_buffer(network_socket, buf, sizeof(buf)) < 0)
return;
packet_delay[i] = vsyncarch_gettime() - *((unsigned long*)buf);
}
/* Sort the packets delays*/
for (i = 0; i < NUM_OF_TESTPACKETS - 1; i++) {
for (j = i + 1; j < NUM_OF_TESTPACKETS; j++) {
if (packet_delay[i] < packet_delay[j]) {
long d = packet_delay[i];
packet_delay[i] = packet_delay[j];
packet_delay[j] = d;
}
}
#ifdef NETWORK_DEBUG
log_debug("packet_delay[%d]=%ld",i,packet_delay[i]);
#endif
}
#ifdef NETWORK_DEBUG
log_debug("vsyncarch_frequency = %ld", vsyncarch_frequency());
#endif
/* calculate delay with 90% of packets beeing fast enough */
/* FIXME: This needs some further investigation */
new_frame_delta = 5 + (BYTE)(vsync_get_refresh_frequency()
* packet_delay[(int)(0.1 * NUM_OF_TESTPACKETS)]
/ (float)vsyncarch_frequency());
network_send_buffer(network_socket, &new_frame_delta,
sizeof(new_frame_delta));
} else {
/* network_mode == NETWORK_CLIENT */
for (i = 0; i < NUM_OF_TESTPACKETS; i++) {
if (network_recv_buffer(network_socket, buf, sizeof(buf)) < 0
|| network_send_buffer(network_socket, buf, sizeof(buf)) < 0)
return;
}
network_recv_buffer(network_socket, &new_frame_delta,
sizeof(new_frame_delta));
}
network_free_frame_event_list();
frame_delta = new_frame_delta;
network_init_frame_event_list();
sprintf(st, translate_text(IDGS_USING_D_FRAMES_DELAY), frame_delta);
log_debug("netplay connected with %d frames delta.", frame_delta);
ui_display_statustext(st, 1);
}
void vsync_init(void (*hook)(void))
{
vsync_hook = hook;
vsync_suspend_speed_eval();
clk_guard_add_callback(maincpu_clk_guard, clk_overflow_callback, NULL);
vsyncarch_init();
vsyncarch_freq = vsyncarch_frequency();
}
