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//=========================================================
// MusE
// Linux Music Editor
// $Id: midievent.cpp,v 1.7.2.2 2009/05/24 21:43:44 terminator356 Exp $
//
// (C) Copyright 2000-2003 Werner Schweer (ws@seh.de)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; version 2 of
// the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
//=========================================================
#include "event.h"
#include "midievent.h"
#include "xml.h"
#include "mpevent.h"
#include "midictrl.h"
namespace MusECore {
//---------------------------------------------------------
// MidiEventBase
//---------------------------------------------------------
MidiEventBase::MidiEventBase(EventType t)
: EventBase(t)
{
a = 0;
b = 0;
c = 0;
}
MidiEventBase::MidiEventBase(const MidiEventBase& ev, bool duplicate_not_clone)
: EventBase(ev, duplicate_not_clone)
{
a = ev.a;
b = ev.b;
c = ev.c;
if(duplicate_not_clone)
edata.setData(ev.data(), ev.dataLen()); // Makes a copy.
else
// NOTE: Even non-shared clone events ALWAYS share edata. edata does NOT currently require
// separate instances, unlike wave events which absolutely do.
// Be aware when iterating or modifying clones for example. (It can save time.)
edata = ev.edata;
}
//---------------------------------------------------------
// assign
//---------------------------------------------------------
void MidiEventBase::assign(const EventBase& ev)
{
if(ev.type() != type())
return;
EventBase::assign(ev);
a = ev.dataA();
b = ev.dataB();
c = ev.dataC();
// NOTE: Even non-shared clone events ALWAYS share edata. edata does NOT currently require
// separate instances, unlike wave events which absolutely do.
// Be aware when iterating or modifying clones for example. (It can save time.)
if(edata.data != ev.data())
edata.setData(ev.data(), ev.dataLen()); // Makes a copy.
}
bool MidiEventBase::isSimilarTo(const EventBase& other_) const
{
const MidiEventBase* other = dynamic_cast<const MidiEventBase*>(&other_);
if (other==NULL) // dynamic cast hsa failed: "other_" is not of type MidiEventBase.
return false;
if ((a==other->a && b==other->b && c==other->c && edata.dataLen==other->edata.dataLen && this->PosLen::operator==(*other)) == false)
return false;
if (edata.dataLen > 0)
return (memcmp(edata.data, other->edata.data, edata.dataLen) == 0);
else
return true; // no data equals no data.
}
//---------------------------------------------------------
// MidiEventBase::mid
//---------------------------------------------------------
EventBase* MidiEventBase::mid(unsigned b, unsigned e) const
{
if (tick() < b || tick() >= e)
return 0;
return new MidiEventBase(*this);
}
//---------------------------------------------------------
// isNoteOff
//---------------------------------------------------------
bool MidiEventBase::isNoteOff() const
{
return (type() == Note && (velo() == 0));
}
bool MidiEventBase::isNoteOff(const Event& e) const
{
return (e.isNoteOff() && (e.pitch() == a));
}
void MidiEventBase::dump(int n) const
{
EventBase::dump(n);
const char* p;
switch(type()) {
case Note: p = "Note "; break;
case Controller: p = "Ctrl "; break;
case Sysex: p = "Sysex "; break;
case Meta: p = "Meta "; break;
default: p = "?? "; break;
}
for (int i = 0; i < (n+2); ++i)
putchar(' ');
printf("<%s> a:0x%x(%d) b:0x%x(%d) c:0x%x(%d)\n",
p, a, a, b, b, c, c);
}
//---------------------------------------------------------
// MidiEventBase::write
//---------------------------------------------------------
void MidiEventBase::write(int level, Xml& xml, const Pos& offset, bool /*forcePath*/) const
{
xml.nput(level++, "<event tick=\"%d\"", tick() + offset.tick());
switch (type()) {
case Note:
xml.nput(" len=\"%d\"", lenTick());
break;
default:
xml.nput(" type=\"%d\"", type());
break;
}
// Changed by T356. BUG: *.med does not save meta event types - ID: 2879426
if (a)
xml.nput(" a=\"%d\"", a);
if (b)
xml.nput(" b=\"%d\"", b);
if (c)
xml.nput(" c=\"%d\"", c);
if (edata.dataLen) {
xml.nput(" datalen=\"%d\">\n", edata.dataLen);
xml.nput(level, "");
for (int i = 0; i < edata.dataLen; ++i)
xml.nput("%02x ", edata.data[i] & 0xff);
xml.nput("\n");
xml.tag(level, "/event");
}
else {
xml.nput(" />\n");
}
}
//---------------------------------------------------------
// MidiEventBase::read
//---------------------------------------------------------
void MidiEventBase::read(Xml& xml)
{
int ev_type = Note;
a = 0;
b = 0;
c = 0;
int dataLen = 0;
for (;;) {
Xml::Token token = xml.parse();
const QString& tag = xml.s1();
switch (token) {
case Xml::Error:
case Xml::End:
return;
case Xml::TagStart:
xml.unknown("Event");
break;
case Xml::Text:
{
QByteArray ba = tag.toLatin1();
const char*s = ba.constData();
edata.data = new unsigned char[dataLen];
edata.dataLen = dataLen;
unsigned char* d = edata.data;
for (int i = 0; i < dataLen; ++i) {
char* endp;
*d++ = strtol(s, &endp, 16);
s = endp;
}
}
break;
case Xml::Attribut:
if (tag == "tick")
setTick(xml.s2().toInt());
else if (tag == "type")
//setType(EventType(xml.s2().toInt()));
ev_type = xml.s2().toInt();
else if (tag == "len")
setLenTick(xml.s2().toInt());
else if (tag == "a")
a = xml.s2().toInt();
else if (tag == "b")
b = xml.s2().toInt();
else if (tag == "c")
c = xml.s2().toInt();
else if (tag == "datalen")
dataLen = xml.s2().toInt();
break;
case Xml::TagEnd:
if (tag == "event") {
// Convert obsolete PAfter and CAfter events to newer controllers
if(ev_type == 3) // PAfter
{
ev_type = Controller;
a = (a & 0x7f) | (CTRL_POLYAFTER & ~0xff); // Controller number + pitch. B is the value.
}
else
if(ev_type == 4) // CAfter
{
ev_type = Controller;
b = a; // Value
a = CTRL_AFTERTOUCH; // Controller number
}
setType(EventType(ev_type));
// HACK: Repair controllers saved with lo byte 0xff.
// No such control. It was supposed to be 0x00.
// It's an error caused by a previous bug, fixed now.
if((ev_type == Controller) && ((a & 0xff) == 0xff))
a &= ~0xff;
return;
}
default:
break;
}
}
}
} // namespace MusECore
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