static void
set_time(void)
{
if (tflag)
{
store_time();
stb_update_clock(stb);
tflag = 0;
}
stb_start_clock(stb);
}
int main(int argc, char* argv[]) {
int res = -1;
if (argc != 2) {
ALOGI("usage: timekeep store|restore");
return res;
}
// Keep CAP_SYS_TIME and drop to system user
if (strcmp(argv[1], "store") == 0) {
res = store_time();
}
if (strcmp(argv[1], "restore") == 0) {
res = restore_time();
}
return res;
}
LONG EXPENTRY standardEvt(MIDIFILE * mf)
{
register UCHAR chr;
register USHORT val;
/* Store the Time of this event in MIDIFILE's Time field */
mf->Time = TrkPtr->Time;
/* Get the Status for this event */
chr = mf->Status = TrkPtr->Status;
/* Is this a Meta-Event? (ie, we use meta's Type for the status, and these values are always
less than 0x80) */
if ( !(chr & 0x80) )
{
/* Set Status to 0xFF */
mf->Status = 0xFF;
/* Set Data[0] = Type */
mf->Data[0] = chr;
switch (chr)
{
/* NOTE: MIDIFILE.DLL sets Data[1] to the proper length for the fixed length
meta types (ie, 0x00, 0x2F, 0x51, 0x54, 0x58, and 0x59). */
/* ------- Sequence # ------- */
/* NOTE: If we use a MetaSeqNum callback, we wouldn't write out a Meta-Event
here, and so this case wouldn't be needed. */
case 0x00:
/* Note the recasting of the EVENT and the MIDIFILE structures to the versions
appropriate for a SEQUENCE NUMBER Meta-Event. */
store_seq( (SEQEVENT *)TrkPtr, (METASEQ *)mf );
break;
/* ------- Set Tempo -------- */
case 0x51:
store_tempo( (TEMPOEVENT *)TrkPtr, (METATEMPO *)mf );
break;
/* --------- SMPTE --------- */
case 0x54:
/* Right now, let's ignore SMPTE events. This was too much of a hassle
since there are too many data bytes to fit into the 8 bytes that I use to
express events internally in this program. */
break;
/* ------- End of Track ------ */
case 0x2F:
printf("Closing track #%ld...\r\n", mf->TrackNum);
break;
/* ------ Time Signature ----- */
case 0x58:
store_time( (TIMEEVENT *)TrkPtr, (METATIME *)mf );
break;
/* ------ Key Signature ------ */
case 0x59:
store_key( (KEYEVENT *)TrkPtr, (METAKEY *)mf );
break;
/* Must be a variable length Meta-Event (ie, type is 0x01 to 0x0F, or 0x7F) */
default:
store_meta( (TXTEVENT *)TrkPtr, (METATXT *)mf );
}
}
/* Must be a real MIDI event (as opposed to a MetaEvent) */
else switch ( chr )
{
/* SYSEX (0xF0) or SYSEX CONTINUATION (0xF7) */
case 0xF0:
case 0xF7:
store_sysex( (XEVENT *)TrkPtr, (METATXT *)mf );
break;
/* For other MIDI messages, they're all fixed length, and will fit into the MIDIFILE
structure, so we copy 2 more data bytes to the MIDIFILE (whether those data bytes
are valid or not -- the DLL takes care of writing the message out properly). */
default:
mf->Data[0] = TrkPtr->Data1;
mf->Data[1] = TrkPtr->Data2;
}
/* Advance the ptr to the next event (ie, for the next call to this function) */
TrkPtr++;
return(0);
}
