Add Reverse script and introduce new TYPE script tag

src/ChangeLog

@@ -1,3 +1,5 @@
+04.05.2022
+    - Reverse script that reverses MIDI and DRUM parts incl controllers. (Staffan)
 03.05.2022
     - Reuploaded script (Fix issue 1037: Time stretching/shrinking for midi/drum parts.) (Staffan)
 26.04.2022

src/muse/scripts.cpp

@@ -2,6 +2,7 @@
 #include <iostream>
 
 #include "scripts.h"
+#include "track.h"
 #include "part.h"
 #include "song.h"
 #include "debug.h"
@@ -81,6 +82,14 @@ void Scripts::executeScript(QWidget *parent, const char* scriptfile, PartList* p
         writeStringToFile(fp,tempStr);
         sprintf(tempStr, "QUANTLEN %d\n", quant);
         writeStringToFile(fp,tempStr);
+        MidiTrack *track = part->track();
+        if (track->type() == Track::MIDI)
+        {
+	        sprintf(tempStr, "TYPE MIDI\n");
+        } else if (track->type() == Track::DRUM) {
+	        sprintf(tempStr, "TYPE DRUM\n");
+        }
+        writeStringToFile(fp,tempStr);
 
         if (MusEGlobal::debugMsg)
             std::cout << "Events in part " << part->events().size() << std::endl;

src/share/scripts/CMakeLists.txt

@@ -31,8 +31,10 @@ file(GLOB script_files
       RandomQuantize1
       RandomPosition1
       RemoveAftertouch
-      RemoveShortEvents 
+      RemoveShortEvents
+      Reverse
       Rhythm1
+      SpeedChange
       SpeedHalf
       SpeedDouble
       SwingQuantize1

src/share/scripts/README.txt

@@ -1,4 +1,4 @@
-MusE midi event scripting format 0.6
+MusE midi event scripting format 0.7
 ====================================
 
 = INTRODUCTION
@@ -21,13 +21,14 @@ to the same file.
 
 The tags that may occur in the file sent to the script are:
 TIMESIG <n> <z>
-PARTLEN <len in ticks of the current Part>
+PART <start tick> <len in ticks>
 BEATLEN <len in ticks of a beat>
 QUANTLEN <len in ticks of the current quantization>
+TYPE <track type of part, can be MIDI or DRUM>
 NOTE <tick> <pitch> <len in ticks> <velocity>
 CONTROLLER <tick> <a> <b> <c>
 
-TIMESIG, PARTLEN, BEATLEN and QUANTLEN are there for informational purposes, to 
+TIMESIG, PART, BEATLEN, QUANTLEN and TYPE are there for informational purposes, to 
 make some transformations possible. e.g. quantization, beat delay.
 
 NOTE and CONTROLLER are the ones that are read back into MusE when the filter
@@ -59,7 +60,7 @@ templates for creating more advanced scripts.
 
 - DoNothing, just reads the input file, loops through the lines and outputs
   them again.
-- DoubleSpeed, reads all notes and outputs them with all ticks divided
+- SpeedDouble, reads all notes and outputs them with all ticks divided
   in half.
 - RemoveShortEvents, a script with a GUI in PyQt which removes events 
   shorter then the set note length

src/share/scripts/Reverse

@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# MusE external midi processing script
+# By: Staffan Melin
+#=============================================================================
+#  MusE
+#  Linux Music Editor
+#  $Id:$
+#
+#  Copyright (C) 2002-2011 by Werner Schweer and others
+#
+#  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; either 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
+#=============================================================================
+
+import sys,time
+testFile = open(sys.argv[1],"r")
+inputEvents = testFile.readlines()
+testFile.close()
+
+for line in inputEvents:
+    if line.startswith('PART'):
+        tag, startticks, partticks = line.split(' ')
+    if line.startswith('TYPE'):
+        tag, tracktype = line.split(' ')
+        if tracktype[-1] == '\n':
+            tracktype = tracktype[:-1]
+
+outputEvents=[]
+#loop through events
+for line in inputEvents:
+    if line.startswith('NOTE'):
+        tag, tick, pitch, length, velocity = line.split(' ')
+        if tracktype == 'MIDI':
+            newtick = int(partticks) - int(tick) - int(length)
+        else:
+            newtick = int(partticks) - int(tick)
+        newline = tag + " " + str(newtick) + " " + pitch + " " + length + " " + velocity
+        outputEvents.append(newline)
+    elif line.startswith('CONTROLLER'):
+        tag, tick, a, b, c = line.split(' ')
+        newtick = int(partticks) - int(tick)
+        newline = tag + " " + str(newtick) + " " + a + " " + b + " " + c
+        outputEvents.append(newline)
+
+
+testFile = open(sys.argv[1],"w")
+testFile.writelines(outputEvents)
+testFile.close()
+