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Decompile alCSeqGetTicks

This commit is contained in:
Ryan Dwyer 2021-03-27 20:08:46 +10:00
parent 5b0dcf398e
commit 597dfa6c6e
1 changed files with 74 additions and 79 deletions
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153
src/lib/lib_38d30.c
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@ -220,102 +220,97 @@ glabel alCSeqNextEvent
u32 __alCSeqGetTrackEvent(ALCSeq *seq, u32 track, ALEvent *event, s32 arg3)
{
u32 offset;
u8 status, loopCt, curLpCt, *tmpPtr;
u32 offset;
u8 status, loopCt, curLpCt, *tmpPtr;
status = __getTrackByte(seq, track);
status = __getTrackByte(seq, track);
if (status == AL_MIDI_Meta) {
u8 type = __getTrackByte(seq, track);
if (status == AL_MIDI_Meta) {
u8 type = __getTrackByte(seq, track);
if (type == AL_MIDI_META_TEMPO) {
event->type = AL_TEMPO_EVT;
event->msg.tempo.status = status;
event->msg.tempo.type = type;
event->msg.tempo.byte1 = __getTrackByte(seq, track);
event->msg.tempo.byte2 = __getTrackByte(seq, track);
event->msg.tempo.byte3 = __getTrackByte(seq, track);
seq->lastStatus[track] = 0; /* lastStatus not supported after meta */
} else if (type == AL_MIDI_META_EOT) {
u32 flagMask;
if (type == AL_MIDI_META_TEMPO) {
event->type = AL_TEMPO_EVT;
event->msg.tempo.status = status;
event->msg.tempo.type = type;
event->msg.tempo.byte1 = __getTrackByte(seq, track);
event->msg.tempo.byte2 = __getTrackByte(seq, track);
event->msg.tempo.byte3 = __getTrackByte(seq, track);
seq->lastStatus[track] = 0; /* lastStatus not supported after meta */
} else if (type == AL_MIDI_META_EOT) {
u32 flagMask;
flagMask = 1 << track;
seq->validTracks = seq->validTracks ^ flagMask;
flagMask = 1 << track;
seq->validTracks = seq->validTracks ^ flagMask;
if (seq->validTracks) { /* there is music left don't end */
event->type = AL_TRACK_END;
if (seq->validTracks) { /* there is music left don't end */
event->type = AL_TRACK_END;
} else { /* no more music send AL_SEQ_END_EVT msg */
event->type = AL_SEQ_END_EVT;
event->type = AL_SEQ_END_EVT;
}
} else if (type == AL_CMIDI_LOOPSTART_CODE) {
status = __getTrackByte(seq, track);
event->msg.loop.count = status << 8;
} else if (type == AL_CMIDI_LOOPSTART_CODE) {
status = __getTrackByte(seq, track);
event->msg.loop.count = status << 8;
status = __getTrackByte(seq, track);
event->msg.loop.count += status;
status = __getTrackByte(seq, track);
event->msg.loop.count += status;
seq->lastStatus[track] = 0;
event->type = AL_CSP_LOOPSTART;
} else if (type == AL_CMIDI_LOOPEND_CODE) {
tmpPtr = seq->curLoc[track];
loopCt = *tmpPtr++;
curLpCt = *tmpPtr;
seq->lastStatus[track] = 0;
event->type = AL_CSP_LOOPSTART;
} else if (type == AL_CMIDI_LOOPEND_CODE) {
tmpPtr = seq->curLoc[track];
loopCt = *tmpPtr++;
curLpCt = *tmpPtr;
if (curLpCt == 0 || !arg3) {
*tmpPtr = loopCt; /* reset current loop count */
seq->curLoc[track] = tmpPtr + 5; /* move pointer to end of event */
} else {
if (curLpCt != 0xff) { /* not a loop forever */
*tmpPtr = curLpCt - 1; /* decrement current loop count */
if (curLpCt == 0 || !arg3) {
*tmpPtr = loopCt; /* reset current loop count */
seq->curLoc[track] = tmpPtr + 5; /* move pointer to end of event */
} else {
if (curLpCt != 0xff) { /* not a loop forever */
*tmpPtr = curLpCt - 1; /* decrement current loop count */
}
tmpPtr++; /* get offset from end of event */
offset = (*tmpPtr++) << 24;
offset += (*tmpPtr++) << 16;
offset += (*tmpPtr++) << 8;
offset += *tmpPtr++;
seq->curLoc[track] = tmpPtr - offset;
}
tmpPtr++; /* get offset from end of event */
offset = (*tmpPtr++) << 24;
offset += (*tmpPtr++) << 16;
offset += (*tmpPtr++) << 8;
offset += *tmpPtr++;
seq->curLoc[track] = tmpPtr - offset;
}
seq->lastStatus[track] = 0;
event->type = AL_CSP_LOOPEND;
}
} else {
event->type = AL_SEQ_MIDI_EVT;
if (status & 0x80) {
event->msg.midi.status = (status & 0xf0) | track;
event->msg.midi.byte1 = __getTrackByte(seq,track);
seq->lastStatus[track] = event->msg.midi.status;
} else { /* running status */
event->msg.midi.status = seq->lastStatus[track];
event->msg.midi.byte1 = status;
}
if ((event->msg.midi.status & 0xf0) != AL_MIDI_ProgramChange
&& (event->msg.midi.status & 0xf0) != AL_MIDI_ChannelPressure) {
event->msg.midi.byte2 = __getTrackByte(seq,track);
if ((event->msg.midi.status & 0xf0) == AL_MIDI_NoteOn) {
event->msg.midi.duration = __readVarLen(seq,track);
}
} else {
event->msg.midi.byte2 = 0;
seq->lastStatus[track] = 0;
event->type = AL_CSP_LOOPEND;
}
}
} else {
event->type = AL_SEQ_MIDI_EVT;
return TRUE;
if (status & 0x80) {
event->msg.midi.status = (status & 0xf0) | track;
event->msg.midi.byte1 = __getTrackByte(seq,track);
seq->lastStatus[track] = event->msg.midi.status;
} else { /* running status */
event->msg.midi.status = seq->lastStatus[track];
event->msg.midi.byte1 = status;
}
if ((event->msg.midi.status & 0xf0) != AL_MIDI_ProgramChange
&& (event->msg.midi.status & 0xf0) != AL_MIDI_ChannelPressure) {
event->msg.midi.byte2 = __getTrackByte(seq,track);
if ((event->msg.midi.status & 0xf0) == AL_MIDI_NoteOn) {
event->msg.midi.duration = __readVarLen(seq,track);
}
} else {
event->msg.midi.byte2 = 0;
}
}
return TRUE;
}
GLOBAL_ASM(
glabel func00039460
/* 39460: 03e00008 */ jr $ra
/* 39464: 8c82000c */ lw $v0,0xc($a0)
/* 39468: 03e00008 */ jr $ra
/* 3946c: 00000000 */ nop
/* 39470: 03e00008 */ jr $ra
/* 39474: 00000000 */ nop
);
s32 alCSeqGetTicks(ALCSeq *seq)
{
return seq->lastTicks;
}
void alCSeqSetLoc(ALCSeq *seq, ALCSeqMarker *m)
{