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libkmid
libkmid
libkmid
track.h
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/* track.h - class track, which has a midi file track and its events
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This file is part of LibKMid 0.9.5
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Copyright (C) 1997,98,99,2000 Antonio Larrosa Jimenez
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LibKMid's homepage : http://www.arrakis.es/~rlarrosa/libkmid.html
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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Send comments and bug fixes to Antonio Larrosa <larrosa@kde.org>
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***************************************************************************/
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#ifndef _TRACK_H
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#define _TRACK_H
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#include <stdio.h>
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#include <libkmid/dattypes.h>
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struct
MidiEvent
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{
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uchar
command
;
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uchar
chn
;
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uchar
note
;
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uchar
vel
;
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uchar
patch
;
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uchar
ctl
;
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uchar
d1
;
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uchar
d2
;
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uchar
d3
;
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uchar
d4
;
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uchar
d5
;
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uchar
d6
;
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ulong
length
;
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uchar *
data
;
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};
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class
MidiTrack
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{
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private
:
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class
MidiTrackPrivate;
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MidiTrackPrivate *d;
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int
id;
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ulong size;
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uchar *data;
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uchar *ptrdata;
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bool
note[16][128];
// Notes that are set on or off by this track
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ulong current_ticks;
// Total number of ticks since beginning of song
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ulong delta_ticks;
// Delta ticks from previous event to next event
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ulong wait_ticks;
// Wait ticks from previous event in other track
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// to next event in this track
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ulong currentpos;
// Some songs don't have a endoftrack event, so
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// we have to see when currentpos > size
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int
endoftrack;
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ulong readVariableLengthValue(
void
);
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uchar lastcommand;
// This is to run light without overbyte :-)
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double
current_time;
// in ms.
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double
time_at_previous_tempochange;
// in ms.
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double
ticks_from_previous_tempochange;
// in ticks
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// double time_to_next_event; // in ms.
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double
time_at_next_event;
// in ms.
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int
tPCN;
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ulong tempo;
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int
power2to(
int
i);
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public
:
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MidiTrack
(FILE *file,
int
tpcn,
int
Id);
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~MidiTrack
();
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int
ticksPassed
(ulong ticks);
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int
msPassed
(ulong ms);
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int
currentMs
(
double
ms);
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ulong
waitTicks
(
void
) {
return
wait_ticks; }
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// ulong waitMs (void) {return time_to_next_event;};
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double
absMsOfNextEvent
(
void
) {
return
time_at_next_event; }
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void
changeTempo
(ulong t);
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void
readEvent
(
MidiEvent
*ev);
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void
init
(
void
);
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void
clear
(
void
);
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};
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#endif
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