ref: 9ba105fa4ee6e68c1bbea9568a36b31fc47cf24c
dir: /src/mmus2mid.c/
// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id: mmus2mid.c 280 2006-01-10 22:14:13Z fraggle $
//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright (C) 1999 by
// id Software, Chi Hoang, Lee Killough, Jim Flynn,
// Rand Phares, Ty Halderman
// Copyright (C) 1999-2000 by
// Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
// Copyright(C) 2005 Simon Howard
//
// 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., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
//
// $Log$
// Revision 1.4 2006/01/10 22:14:13 fraggle
// Shut up compiler warnings
//
// Revision 1.3 2006/01/05 02:48:03 fraggle
// Fixes for big endian machines (thanks locust)
//
// Revision 1.2 2005/09/06 21:06:45 fraggle
// Newer versions of mmus2mid.c,h from prboom
//
// Revision 1.1 2005/09/05 22:50:56 fraggle
// Add mmus2mid code from prboom. Use 'void *' for music handles. Pass
// length of data when registering music.
//
//
// DESCRIPTION:
// MUS to MID conversion utility from PrBoom.
//
// This file supports conversion of MUS format music in memory
// to MIDI format 1 music in memory.
//
// The primary routine, mmus2mid, converts a block of memory in MUS format
// to an Allegro MIDI structure. This supports playing MUS lumps in a wad
// file with BOOM.
//
// Another routine, Midi2MIDI, converts a block of memory in MIDI format 1 to
// an Allegro MIDI structure. This supports playing MIDI lumps in a wad
// file with BOOM.
//
// For testing purposes, and to make a utility if desired, if the symbol
// STANDALONE is defined by uncommenting the definition below, a main
// routine is compiled that will convert a possibly wildcarded set of MUS
// files to a similarly named set of MIDI files.
//
// Much of the code here is thanks to S. Bacquet's source for QMUS2MID.C
//
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#ifdef MSDOS /* proff: I don't use allegro in windows */
#include <allegro.h>
#endif /* !MSDOS */
#include "mmus2mid.h"
//#define STANDALONE /* uncomment this to make MMUS2MID.EXE */
#ifndef STANDALONE
#include "m_swap.h"
#include "z_zone.h"
#endif
// some macros to decode mus event bit fields
#define last(e) ((UBYTE)((e) & 0x80))
#define event_type(e) ((UBYTE)(((e) & 0x7F) >> 4))
#define channel(e) ((UBYTE)((e) & 0x0F))
// event types
typedef enum
{
RELEASE_NOTE,
PLAY_NOTE,
BEND_NOTE,
SYS_EVENT,
CNTL_CHANGE,
UNKNOWN_EVENT1,
SCORE_END,
UNKNOWN_EVENT2,
} mus_event_t;
// MUS format header structure
typedef struct
{
char ID[4]; // identifier "MUS"0x1A
UWORD ScoreLength; // length of music portion
UWORD ScoreStart; // offset of music portion
UWORD channels; // count of primary channels
UWORD SecChannels; // count of secondary channels
UWORD InstrCnt; // number of instruments
} MUSheader;
// to keep track of information in a MIDI track
typedef struct Track
{
char velocity;
long deltaT;
UBYTE lastEvt;
long alloced;
} TrackInfo;
// array of info about tracks
static TrackInfo track[MIDI_TRACKS];
// initial track size allocation
#define TRACKBUFFERSIZE 1024
// lookup table MUS -> MID controls
static UBYTE MUS2MIDcontrol[15] =
{
0, // Program change - not a MIDI control change
0x00, // Bank select
0x01, // Modulation pot
0x07, // Volume
0x0A, // Pan pot
0x0B, // Expression pot
0x5B, // Reverb depth
0x5D, // Chorus depth
0x40, // Sustain pedal
0x43, // Soft pedal
0x78, // All sounds off
0x7B, // All notes off
0x7E, // Mono
0x7F, // Poly
0x79 // Reset all controllers
};
// some strings of bytes used in the midi format
static UBYTE midikey[] =
{0x00,0xff,0x59,0x02,0x00,0x00}; // C major
static UBYTE miditempo[] =
{0x00,0xff,0x51,0x03,0x09,0xa3,0x1a}; // uS/qnote
static UBYTE midihdr[] =
{'M','T','h','d',0,0,0,6,0,1,0,0,0,0}; // header (length 6, format 1)
static UBYTE trackhdr[] =
{'M','T','r','k'}; // track header
// static routine prototypes
static int TWriteByte(MIDI *mididata, int MIDItrack, UBYTE byte);
static int TWriteVarLen(MIDI *mididata, int MIDItrack, register ULONG value);
static ULONG ReadTime(const UBYTE **musptrp);
static int FirstChannelAvailable(int MUS2MIDchannel[]);
static UBYTE MidiEvent(MIDI *mididata,UBYTE midicode,UBYTE MIDIchannel,
UBYTE MIDItrack,int nocomp);
//
// TWriteByte()
//
// write one byte to the selected MIDItrack, update current position
// if track allocation exceeded, double it
// if track not allocated, initially allocate TRACKBUFFERSIZE bytes
//
// Passed pointer to Allegro MIDI structure, number of the MIDI track being
// written, and the byte to write.
//
// Returns 0 on success, MEMALLOC if a memory allocation error occurs
//
static int TWriteByte(MIDI *mididata, int MIDItrack, UBYTE byte)
{
ULONG pos ;
pos = mididata->track[MIDItrack].len;
if (pos >= (ULONG)track[MIDItrack].alloced)
{
track[MIDItrack].alloced = // double allocation
track[MIDItrack].alloced? // or set initial TRACKBUFFERSIZE
2*track[MIDItrack].alloced :
TRACKBUFFERSIZE;
if (!(mididata->track[MIDItrack].data = // attempt to reallocate
realloc(mididata->track[MIDItrack].data,
track[MIDItrack].alloced)))
return MEMALLOC;
}
mididata->track[MIDItrack].data[pos] = byte;
mididata->track[MIDItrack].len++;
return 0;
}
//
// TWriteVarLen()
//
// write the ULONG value to tracknum-th track, in midi format, which is
// big endian, 7 bits per byte, with all bytes but the last flagged by
// bit 8 being set, allowing the length to vary.
//
// Passed the Allegro MIDI structure, the track number to write,
// and the ULONG value to encode in midi format there
//
// Returns 0 if sucessful, MEMALLOC if a memory allocation error occurs
//
static int TWriteVarLen(MIDI *mididata, int tracknum, register ULONG value)
{
register ULONG buffer;
buffer = value & 0x7f;
while ((value >>= 7)) // terminates because value unsigned
{
buffer <<= 8; // note first value shifted in has bit 8 clear
buffer |= 0x80; // all succeeding values do not
buffer += (value & 0x7f);
}
while (1) // write bytes out in opposite order
{
if (TWriteByte(mididata, tracknum, (UBYTE)(buffer&0xff))) // insure buffer masked
return MEMALLOC;
if (buffer & 0x80)
buffer >>= 8;
else // terminate on the byte with bit 8 clear
break;
}
return 0;
}
//
// ReadTime()
//
// Read a time value from the MUS buffer, advancing the position in it
//
// A time value is a variable length sequence of 8 bit bytes, with all
// but the last having bit 8 set.
//
// Passed a pointer to the pointer to the MUS buffer
// Returns the integer unsigned long time value there and advances the pointer
//
static ULONG ReadTime(const UBYTE **musptrp)
{
register ULONG timeval = 0;
int byte;
do // shift each byte read up in the result until a byte with bit 8 clear
{
byte = *(*musptrp)++;
timeval = (timeval << 7) + (byte & 0x7F);
}
while(byte & 0x80);
return timeval;
}
//
// FirstChannelAvailable()
//
// Return the next unassigned MIDI channel number
//
// The assignment for MUS channel 15 is not counted in the caculation, that
// being percussion and always assigned to MIDI channel 9 (base 0).
//
// Passed the array of MIDI channels assigned to MUS channels
// Returns the maximum channel number unassigned unless that is 9 in which
// case 10 is returned.
//
// killough 10/7/98: changed char parameter, return values to int
static int FirstChannelAvailable(int MUS2MIDchannel[])
{
int i ;
int max = -1 ;
// find the largest MIDI channel assigned so far
for (i = 0; i < 15; i++)
if (MUS2MIDchannel[i] > max)
max = MUS2MIDchannel[i];
return (max == 8 ? 10 : max+1); // skip MIDI channel 9 (percussion)
}
//
// MidiEvent()
//
// Constructs a MIDI event code, and writes it to the current MIDI track
// unless its the same as the last event code and compressio is enabled
// in which case nothing is written.
//
// Passed the Allegro MIDI structure, the midi event code, the current
// MIDI channel number, the current MIDI track number, and whether compression
// (running status) is enabled.
//
// Returns the new event code if successful, 0 if a memory allocation error
//
static UBYTE MidiEvent(MIDI *mididata,UBYTE midicode,UBYTE MIDIchannel,
UBYTE MIDItrack,int nocomp)
{
UBYTE newevent;
newevent = midicode | MIDIchannel;
if ((newevent != track[MIDItrack].lastEvt) || nocomp)
{
if (TWriteByte(mididata,MIDItrack, newevent))
return 0; // indicates MEMALLOC error
track[MIDItrack].lastEvt = newevent;
}
return newevent;
}
//
// mmus2mid()
//
// Convert a memory buffer contain MUS data to an Allegro MIDI structure
// with specified time division and compression.
//
// Passed a pointer to the buffer containing MUS data, a pointer to the
// Allegro MIDI structure, the divisions, and a flag whether to compress.
//
// Returns 0 if successful, otherwise an error code (see mmus2mid.h).
//
int mmus2mid(const UBYTE *mus, MIDI *mididata, UWORD division, int nocomp)
{
UWORD TrackCnt = 0;
UBYTE evt, MUSchannel, MIDIchannel, MIDItrack=0, NewEvent;
int i, event, data;
const UBYTE *musptr;
size_t muslen;
static MUSheader MUSh;
UBYTE MIDIchan2track[MIDI_TRACKS]; // killough 10/7/98: fix too small array
int MUS2MIDchannel[MIDI_TRACKS]; // killough 10/7/98: fix too small array
// copy the MUS header from the MUS buffer to the MUSh header structure
memcpy(&MUSh,mus,sizeof(MUSheader));
MUSh.ScoreLength = SHORT(MUSh.ScoreLength);
MUSh.ScoreStart = SHORT(MUSh.ScoreStart);
MUSh.channels = SHORT(MUSh.channels);
MUSh.SecChannels = SHORT(MUSh.SecChannels);
MUSh.InstrCnt = SHORT(MUSh.InstrCnt);
// check some things and set length of MUS buffer from internal data
if (!(muslen = MUSh.ScoreLength + MUSh.ScoreStart))
return MUSDATAMT; // MUS file empty
if (MUSh.channels > 15) // MUSchannels + drum channel > 16
return TOOMCHAN ;
musptr = mus+MUSh.ScoreStart; // init musptr to start of score
for (i = 0; i < MIDI_TRACKS; i++) // init the track structure's tracks
{
MUS2MIDchannel[i] = -1; // flag for channel not used yet
track[i].velocity = 64;
track[i].deltaT = 0;
track[i].lastEvt = 0;
//free(mididata->track[i].data);//jff 3/5/98 remove old allocations
mididata->track[i].data=NULL;
track[i].alloced = 0;
mididata->track[i].len = 0;
}
if (!division)
division = 70;
// allocate the first track which is a special tempo/key track
// note multiple tracks means midi format 1
// set the divisions (ticks per quarter note)
mididata->divisions = division;
// allocate for midi tempo/key track, allow for end of track
if (!(mididata->track[0].data =
realloc(mididata->track[0].data,sizeof(midikey)+sizeof(miditempo)+4)))
return MEMALLOC;
// key C major
memcpy(mididata->track[0].data,midikey,sizeof(midikey));
// tempo uS/qnote
memcpy(mididata->track[0].data+sizeof(midikey),miditempo,sizeof(miditempo));
mididata->track[0].len = sizeof(midikey)+sizeof(miditempo);
TrackCnt++; // music tracks start at 1
// process the MUS events in the MUS buffer
do
{
// get a mus event, decode its type and channel fields
event = *musptr++;
if ((evt = event_type(event)) == SCORE_END) //jff 1/23/98 use symbol
break; // if end of score event, leave
MUSchannel = channel(event);
// if this channel not initialized, do so
if (MUS2MIDchannel[MUSchannel] == -1)
{
// set MIDIchannel and MIDItrack
MIDIchannel = MUS2MIDchannel[MUSchannel] =
(MUSchannel == 15 ? 9 : FirstChannelAvailable(MUS2MIDchannel));
MIDItrack = MIDIchan2track[MIDIchannel] = (UBYTE)TrackCnt++;
}
else // channel already allocated as a track, use those values
{
MIDIchannel = MUS2MIDchannel[MUSchannel];
MIDItrack = MIDIchan2track[MIDIchannel];
}
if (TWriteVarLen(mididata, MIDItrack, track[MIDItrack].deltaT))
return MEMALLOC;
track[MIDItrack].deltaT = 0;
switch(evt)
{
case RELEASE_NOTE:
// killough 10/7/98: Fix noise problems by not allowing compression
if (!(NewEvent=MidiEvent(mididata,0x90,MIDIchannel,MIDItrack,1)))
return MEMALLOC;
data = *musptr++;
if (TWriteByte(mididata, MIDItrack, (UBYTE)(data & 0x7F)))
return MEMALLOC;
if (TWriteByte(mididata, MIDItrack, 0))
return MEMALLOC;
break;
case PLAY_NOTE:
if (!(NewEvent=MidiEvent(mididata,0x90,MIDIchannel,MIDItrack,nocomp)))
return MEMALLOC;
data = *musptr++;
if (TWriteByte(mididata, MIDItrack, (UBYTE)(data & 0x7F)))
return MEMALLOC;
if( data & 0x80 )
track[MIDItrack].velocity = (*musptr++) & 0x7f;
if (TWriteByte(mididata, MIDItrack, track[MIDItrack].velocity))
return MEMALLOC;
break;
case BEND_NOTE:
if (!(NewEvent=MidiEvent(mididata,0xE0,MIDIchannel,MIDItrack,nocomp)))
return MEMALLOC;
data = *musptr++;
if (TWriteByte(mididata, MIDItrack, (UBYTE)((data & 1) << 6)))
return MEMALLOC;
if (TWriteByte(mididata, MIDItrack, (UBYTE)(data >> 1)))
return MEMALLOC;
break;
case SYS_EVENT:
if (!(NewEvent=MidiEvent(mididata,0xB0,MIDIchannel,MIDItrack,nocomp)))
return MEMALLOC;
data = *musptr++;
if (data<10 || data>14)
return BADSYSEVT;
if (TWriteByte(mididata, MIDItrack, MUS2MIDcontrol[data]))
return MEMALLOC;
if (data == 12)
{
if (TWriteByte(mididata, MIDItrack, (UBYTE)(MUSh.channels+1)))
return MEMALLOC;
}
else
if (TWriteByte(mididata, MIDItrack, 0))
return MEMALLOC;
break;
case CNTL_CHANGE:
data = *musptr++;
if (data>9)
return BADCTLCHG;
if (data)
{
if (!(NewEvent=MidiEvent(mididata,0xB0,MIDIchannel,MIDItrack,nocomp)))
return MEMALLOC;
if (TWriteByte(mididata, MIDItrack, MUS2MIDcontrol[data]))
return MEMALLOC;
}
else
{
if (!(NewEvent=MidiEvent(mididata,0xC0,MIDIchannel,MIDItrack,nocomp)))
return MEMALLOC;
}
data = *musptr++;
if (TWriteByte(mididata, MIDItrack, (UBYTE)(data & 0x7F)))
return MEMALLOC;
break;
case UNKNOWN_EVENT1: // mus events 5 and 7
case UNKNOWN_EVENT2: // meaning not known
return BADMUSCTL;
case SCORE_END:
break;
default:
return BADMUSCTL; // exit with error
}
if (last(event))
{
ULONG DeltaTime = ReadTime(&musptr); // killough 10/7/98: make local
for (i = 0;i < MIDI_TRACKS; i++) //jff 3/13/98 update all tracks
track[i].deltaT += DeltaTime; //whether allocated yet or not
}
}
while ((evt != SCORE_END) && ((size_t)(musptr-mus) < muslen));
if (evt!=SCORE_END)
return MUSDATACOR;
// Now add an end of track to each mididata track, correct allocation
for (i = 0; i < MIDI_TRACKS; i++)
if (mididata->track[i].len)
{ // killough 10/7/98: simplify code
if (TWriteByte(mididata, i, 0x00) || // midi end of track code
TWriteByte(mididata, i, 0xFF) ||
TWriteByte(mididata, i, 0x2F) ||
TWriteByte(mididata, i, 0x00))
return MEMALLOC;
// jff 1/23/98 fix failure to set data NULL, len 0 for unused tracks
// shorten allocation to proper length (important for Allegro)
if (!(mididata->track[i].data =
realloc(mididata->track[i].data,mididata->track[i].len)))
return MEMALLOC;
}
else
{
free(mididata->track[i].data);
mididata->track[i].data = NULL;
}
return 0;
}
void free_mididata(MIDI *mid)
{
int i;
for (i = 0; i < MIDI_TRACKS; i++)
if (mid->track[i].data)
free(mid->track[i].data);
}
//
// ReadLength()
//
// Reads the length of a chunk in a midi buffer, advancing the pointer
// 4 bytes, bigendian
//
// Passed a pointer to the pointer to a MIDI buffer
// Returns the chunk length at the pointer position
//
size_t ReadLength(UBYTE **mid)
{
UBYTE *midptr = *mid;
size_t length = (*midptr++)<<24;
length += (*midptr++)<<16;
length += (*midptr++)<<8;
length += *midptr++;
*mid = midptr;
return length;
}
//
// MidiToMIDI()
//
// Convert an in-memory copy of a MIDI format 0 or 1 file to
// an Allegro MIDI structure, that is valid or has been zeroed
//
// Passed a pointer to a memory buffer with MIDI format music in it and a
// pointer to an Allegro MIDI structure.
//
// Returns 0 if successful, BADMIDHDR if the buffer is not MIDI format
//
int MidiToMIDI(UBYTE *mid,MIDI *mididata)
{
int i;
int ntracks;
// read the midi header
if (memcmp(mid,midihdr,4))
return BADMIDHDR;
mididata->divisions = (mid[12]<<8)+mid[13];
ntracks = (mid[10]<<8)+mid[11];
if (ntracks>=MIDI_TRACKS)
return BADMIDHDR;
mid += 4;
{ // killough 10/7/98: fix mid from being modified twice before sequence pt.
size_t t = ReadLength(&mid); // seek past header
mid += t;
}
// now read each track
for (i=0;i<ntracks;i++)
{
while (memcmp(mid,trackhdr,4)) // simply skip non-track data
{
mid += 4;
{
size_t t = ReadLength(&mid); // seek past header
mid += t; // killough 10/7/98: prevent mid undefined behavior
}
}
mid += 4;
mididata->track[i].len = ReadLength(&mid); // get length, move mid past it
// read a track
mididata->track[i].data = realloc(mididata->track[i].data,mididata->track[i].len);
memcpy(mididata->track[i].data,mid,mididata->track[i].len);
mid += mididata->track[i].len;
}
for (;i<MIDI_TRACKS;i++)
if (mididata->track[i].len)
{
free(mididata->track[i].data);
mididata->track[i].data = NULL;
mididata->track[i].len = 0;
}
return 0;
}
//#ifdef STANDALONE /* this code unused by BOOM provided for future portability */
// /* it also provides a MUS to MID file converter*/
// proff: I moved this down, because I need MIDItoMidi
static void TWriteLength(UBYTE **midiptr,ULONG length);
//
// TWriteLength()
//
// Write the length of a MIDI chunk to a midi buffer. The length is four
// bytes and is written byte-reversed for bigendian. The pointer to the
// midi buffer is advanced.
//
// Passed a pointer to the pointer to a midi buffer, and the length to write
// Returns nothing
//
static void TWriteLength(UBYTE **midiptr,ULONG length)
{
// proff: Added typecast to avoid warning
*(*midiptr)++ = (unsigned char)((length>>24)&0xff);
*(*midiptr)++ = (unsigned char)((length>>16)&0xff);
*(*midiptr)++ = (unsigned char)((length>>8)&0xff);
*(*midiptr)++ = (unsigned char)((length)&0xff);
}
//
// MIDIToMidi()
//
// This routine converts an Allegro MIDI structure to a midi 1 format file
// in memory. It is used to support memory MUS -> MIDI conversion
//
// Passed a pointer to an Allegro MIDI structure, a pointer to a pointer to
// a buffer containing midi data, and a pointer to a length return.
// Returns 0 if successful, MEMALLOC if a memory allocation error occurs
//
int MIDIToMidi(MIDI *mididata,UBYTE **mid,int *midlen)
{
size_t total;
int i,ntrks;
UBYTE *midiptr;
// calculate how long the mid buffer must be, and allocate
total = sizeof(midihdr);
for (i=0,ntrks=0;i<MIDI_TRACKS;i++)
if (mididata->track[i].len)
{
total += 8 + mididata->track[i].len; // Track hdr + track length
ntrks++;
}
if ((*mid = malloc(total))==NULL)
return MEMALLOC;
// fill in number of tracks and bigendian divisions (ticks/qnote)
midihdr[10] = 0;
midihdr[11] = (UBYTE)ntrks; // set number of tracks in header
midihdr[12] = (mididata->divisions>>8) & 0x7f;
midihdr[13] = (mididata->divisions) & 0xff;
// write the midi header
midiptr = *mid;
memcpy(midiptr,midihdr,sizeof(midihdr));
midiptr += sizeof(midihdr);
// write the tracks
for (i=0;i<MIDI_TRACKS;i++)
{
if (mididata->track[i].len)
{
memcpy(midiptr,trackhdr,sizeof(trackhdr)); // header
midiptr += sizeof(trackhdr);
TWriteLength(&midiptr,mididata->track[i].len); // track length
// data
memcpy(midiptr,mididata->track[i].data,mididata->track[i].len);
midiptr += mididata->track[i].len;
}
}
// return length information
*midlen = midiptr - *mid;
return 0;
}
#ifdef STANDALONE /* this code unused by BOOM provided for future portability */
/* it also provides a MUS to MID file converter*/
// proff: I moved this down, because I need MIDItoMidi
//
// FreeTracks()
//
// Free all track allocations in the MIDI structure
//
// Passed a pointer to an Allegro MIDI structure
// Returns nothing
//
static void FreeTracks(MIDI *mididata)
{
int i;
for (i=0; i<MIDI_TRACKS; i++)
{
free(mididata->track[i].data);
mididata->track[i].data = NULL;
mididata->track[i].len = 0;
}
}
//
// main()
//
// Main routine that will convert a globbed set of MUS files to the
// correspondingly named MID files using mmus2mid(). Only compiled
// if the STANDALONE symbol is defined.
//
// Passed the command line arguments, returns 0 if successful
//
int main(int argc,char **argv)
{
FILE *musst,*midst;
char musfile[FILENAME_MAX],midfile[FILENAME_MAX];
MUSheader MUSh;
UBYTE *mus,*mid;
static MIDI mididata;
int err,midlen;
char *p,*q;
int i;
if (argc<2)
{
//jff 8/3/98 use logical output routine
lprintf(LO_INFO,"Usage: MMUS2MID musfile[.MUS]\n");
lprintf(LO_INFO,"writes musfile.MID as output\n");
lprintf(LO_INFO,"musfile may contain wildcards\n");
exit(1);
}
for (i=1;i<argc;i++)
{
strcpy(musfile,argv[i]);
p = strrchr(musfile,'.');
q = strrchr(musfile,'\\');
if (p && (!q || q<p)) *p='\0';
strcpy(midfile,musfile);
strcat(musfile,".MUS");
strcat(midfile,".MID");
musst = fopen(musfile,"rb");
if (musst)
{
fread(&MUSh,sizeof(MUSheader),1,musst);
mus = malloc(MUSh.ScoreLength+MUSh.ScoreStart);
if (mus)
{
fseek(musst,0,SEEK_SET);
if (!fread(mus,MUSh.ScoreLength+MUSh.ScoreStart,1,musst))
{
//jff 8/3/98 use logical output routine
lprintf(LO_FATAL,"Error reading MUS file\n");
free(mus);
exit(1);
}
fclose(musst);
}
else
{
//jff 8/3/98 use logical output routine
lprintf(LO_FATAL,"Out of memory\n");
free(mus);
exit(1);
}
err = mmus2mid(mus,&mididata,89,1);
if (err)
{
//jff 8/3/98 use logical output routine
lprintf(LO_FATAL,"Error converting MUS file to MIDI: %d\n",err);
exit(1);
}
free(mus);
MIDIToMidi(&mididata,&mid,&midlen);
midst = fopen(midfile,"wb");
if (midst)
{
if (!fwrite(mid,midlen,1,midst))
{
//jff 8/3/98 use logical output routine
lprintf(LO_FATAL,"Error writing MIDI file\n");
FreeTracks(&mididata);
free(mid);
exit(1);
}
fclose(midst);
}
else
{
//jff 8/3/98 use logical output routine
lprintf(LO_FATAL,"Can't open MIDI file for output: %s\n", midfile);
FreeTracks(&mididata);
free(mid);
exit(1);
}
}
else
{
//jff 8/3/98 use logical output routine
lprintf(LO_FATAL,"Can't open MUS file for input: %s\n", midfile);
exit(1);
}
//jff 8/3/98 use logical output routine
lprintf(LO_CONFIRM,"MUS file %s converted to MIDI file %s\n",musfile,midfile);
FreeTracks(&mididata);
free(mid);
}
exit(0);
}
#endif