option.c

一个很好的c++ midi解码算法,不依赖于任何平台.

/*
 *  option.cc
 *  Copyright (C) 1998-2000 SAKAI Katsuya
 *
 *  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
 */

#include <stdio.h> //#include <iostream.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <ctype.h>
#include "option.h"
#include "config.h"
#include "defines.h"

OPTION::OPTION()
{
  Data = 0;
  tempo = 100;
  NumOfData = 0L;
  repeat    = 1L;
  shuffle   = FALSE;
  useSerial = FALSE;
  PortAdevice = PORT_A;
  PortBdevice = PORT_B;
  PortCdevice = PORT_C;
  PortDdevice = PORT_D;
  PortEdevice = PORT_E;
  PortFdevice = PORT_F;
  SerialDevice[0] = '\0';
  SequencerDevice[0] = '\0';
  Output   = DEFAULTMODE;
  
  changeBank32 = 255;
  
  timeval tp;
  gettimeofday(&tp, NULL);
  srand(tp.tv_usec);
}

char *OPTION::filename(char *path)
{
  char *p;
  if((p=strrchr(path, '/'))!=NULL)
    p++;
  else
    p=path;
  return p;
}

void OPTION::shuffleData()
{
  if(NumOfData<=0) return;
  
  char *temp;
  u_long i, j;
  for(i=0; i<NumOfData; i++)
    {
      j = rand() % NumOfData;
      temp = Data[i];
      Data[i] = Data[j];
      Data[j] = temp;
    }
}

u_long OPTION::readDec(char *chkop)
{
  char c;
  c=*chkop++;
  u_long data=0L;
  if(c=='\0') usage();
  if(isdigit(c)){
    do{
      data = data * 10 + (u_long)(c-'0');
      c=*chkop++;
    } while(isdigit(c));
    if(c!='\0') usage();
  } else usage();
  return data;
}

void OPTION::readDec(char *chkop, u_long *val1, u_long *val2)
{
  char c;
  c=*chkop++;
  u_long data=0L;
  if(c=='\0') usage();
  if(!isdigit(c)) usage();
  do{
    data = data * 10 + (u_long)(c-'0');
    c=*chkop++;
  } while(isdigit(c));
  if(c!=',') usage();
  *val1 = data; data=0L;
  c=*chkop++;
  if(!isdigit(c)) usage();
  do{
    data = data * 10 + (u_long)(c-'0');
    c=*chkop++;
  } while(isdigit(c));
  if(c!='\0') usage();
  *val2 = data;
}

void OPTION::getOption(int argc, char *argv[])
{
  int i;
  u_long dummy;
  char *chkop;
  char c;
  
  progname = argv[0];
  wait=DEFAULT_WAIT;
  strcpy (SerialDevice, SEQ_SERIAL);
  strcpy (SequencerDevice, SEQUENCER);
 
#ifdef DEFAULT_RESET
  strcpy (ResetDataName, DEFAULT_RESET);
#else
  ResetDataName[0]='\0';
#endif

  Data = new char* [argc-1];
  
#ifndef NO_OSS
  u_long port, dev;
#endif
  for(i=1;i<argc;i++)
    {
      chkop=argv[i];
      if(*chkop=='-')
	{
	  if (*++chkop == '\0')
	    usage();
	  c=*chkop++;
	  switch (c)
	    {
	      
#ifndef NO_OSS
	    case 'd':
	      readDec(chkop, &port, &dev);
#ifdef SHOW_OPTION
	      cout << "port:" << port << " dev:" << dev << endl;
#endif
	      if(port>5 || dev>15)
		usage();
	      else
		switch(port)
		  {
		  case 0:
		    PortAdevice = (u_char)dev; break;
		  case 1:
		    PortBdevice = (u_char)dev; break;
		  case 2:
		    PortCdevice = (u_char)dev; break;
		  case 3:
		    PortDdevice = (u_char)dev; break;
		  case 4:
		    PortEdevice = (u_char)dev; break;
		  case 5:
		    PortFdevice = (u_char)dev; break;
		  }
	      break;
	      
	    case 'm' :
	      dummy = readDec(chkop);
	      if(dummy>2)
		usage();
	      else
		Output = dummy;
	      break;
#endif  // NO_OSS
	      
	    case 'w' :
	      wait = readDec(chkop);
	      break;
	      
	    case 'R' :
	      if(*chkop=='\0')
		repeat=~0;
	      else
		{
		  repeat=readDec(chkop);
		}
#ifdef SHOW_OPTION
	      cout << "repeat:" << repeat << endl;
#endif
	      break;
	      
	    case 'r' :
	      if (chkop[0]=='\0') usage();
	      else if (strcmp(chkop, "0")==0)
		ResetDataName[0] = '\0';
	      else if (strcmp(chkop, "1")==0)
		strcpy(ResetDataName, RESET1);
	      else if (strcmp(chkop, "2")==0)
		strcpy(ResetDataName, RESET2);
	      else if (strcmp(chkop, "3")==0)
		strcpy(ResetDataName, RESET3);
	      else if (strcmp(chkop, "4")==0)
		strcpy(ResetDataName, RESET4);
	      else
		strcpy(ResetDataName, chkop);
	      
#ifdef SHOW_OPTION
	      cout << "reset data : ";
	      if(ResetDataName[0]=='\0') cout << "none";
	      else cout << ResetDataName;
	      cout << endl;
#endif
	      break;
	      
	    case 's' :
	      if (*chkop=='\0')
		{
		  shuffle = 1 - shuffle;
		}
#ifndef NO_OSS
	      else
		{
		  if(strcmp(chkop, "erial")==0)
		    useSerial = 1 - useSerial;
		  else
		    usage();
		}
#endif
	      break;
	      
	    case 'n':
	      if (*chkop!='\0')
		strcpy (SequencerDevice, chkop);
	      else
		usage ();
#ifdef SHOW_OPTION
	      cout << "sequencer : " << SequencerDevice << endl;
#endif
	      break;
	      
	    case 'o':
	      if (*chkop!='\0')
		strcpy (SerialDevice, chkop);
	      else
		usage ();
	      // Output = Serial;
#ifdef SHOW_OPTION
	      cout << "serial : " << SerialDevice << endl;
#endif
	      break;
	      
	    case 't':
	      dummy = readDec(chkop);
	      if(dummy>5000 || dummy==0)
		usage();
	      else
		tempo = (u_short)dummy;
	      break;
	      
	    case 'b':
	      if(*chkop=='\0')
		changeBank32 = 128;
	      else
		{
		  dummy = readDec(chkop);
		  if (dummy>127)
		    usage ();
		  else
		    changeBank32 = (u_char)dummy;
		}
#ifdef SHOW_OPTION
	      cout << "change CC#32 : " << (int)changeBank32 << endl;
#endif
	      break;
	      
	      
	    default:
	      usage();
	      break;
	    }
	}
      else
	{
	  Data[NumOfData] = argv[i];
	  NumOfData++;
	}
    }
  if(NumOfData == 0)
    usage();
}

void OPTION::usage()
{
#if 0
  cout << endl
       << "MIDI File Player for MID/RCP/R36/G18/G36" << endl
       << filename(progname) << " version " << VERSION
#ifdef RUNNING_ST
       << '+'
#endif
#ifdef NO_OSS
       << '.'
#endif
       << endl
       << "Copyright (C) 1998-2000 Sakai Katsuya" << endl
       << "This software comes with ABSOLUTELY NO WARRANTY." << endl
       << endl 
       << "usage: " << filename(progname)
       << " [-options...] files... [-options... or files...]"<< endl 
       << "   option" << endl
       << "   -b[xxx]  : change BankSelectLSB(CC#32) values for xxx"
       << endl
       << "              xxx:0...127" << endl
#ifndef NO_OSS
       << "   -dxx,yyy : output port xx to midi device #yyy" << endl
       << "              xx:0...5 ,  yyy:0...15" << endl 
       << "   -mxx     : set output mode (xx= 0:Sequencer, 1:Serial)" << endl
    // << "   -mxx     : set output mode " << endl
    // << "              (xx= 0:Sequencer, 1:Serial, 2:RawMIDI+Serial)"<<endl
       << "   -n<dev>  : set sequencer device (default:"<<SEQUENCER<<")"<<endl
#endif
       << "   -o<dev>  : set serial device    (default:"<<SEQ_SERIAL<<")"<<endl
    // << "   -p<dev>  : set raw midi device  (default:"<<SEQ_SERIAL<<")"<<endl
       << "   -R[xxx]  : repeat xxx times" << endl
       << "   -r0      : not send initialize data" << endl
       << "   -r1      : send RESET1 (" << filename(RESET1) << ')' << endl
       << "   -r2      : send RESET2 (" << filename(RESET2) << ')' << endl
       << "   -r3      : send RESET3 (" << filename(RESET3) << ')' << endl
       << "   -r4      : send RESET4 (" << filename(RESET4) << ')' << endl
       << "   -s       : shuffle play" << endl
#ifndef NO_OSS
       << "   -serial  : use 0xF5 command to change port" << endl
#endif
    // << "   -wxxx  : song interval (xxx msec)" << endl
    // << "   -txxx  : master tempo * xxx%" << endl  // for debug
       << endl;
#else




       printf("\nMIDI File Player for MID/RCP/R36/G18/G36\n");
       printf("%s version %s", filename(progname), VERSION);
#ifdef RUNNING_ST
       printf("+");
#endif
#ifdef NO_OSS
       printf(".");
#endif
	   printf("\n");
	   printf("Copyright (C) 1998-2000 Sakai Katsuya\n");
       printf("This software comes with ABSOLUTELY NO WARRANTY.\n\n");
       printf("usage: %s",filename(progname));
       printf(" [-options...] files... [-options... or files...]\n"); 
       printf("   option\n");
       printf("   -b[xxx]  : change BankSelectLSB(CC#32) values for xxx\n");
       printf("              xxx:0...127\n");
#ifndef NO_OSS
       printf("   -dxx,yyy : output port xx to midi device #yyy\n");
       printf("              xx:0...5 ,  yyy:0...15\n");
       printf("   -mxx     : set output mode (xx= 0:Sequencer, 1:Serial)\n");
       printf("   -n<dev>  : set sequencer device (default:%s)\n",SEQUENCER);
#endif
       printf("   -o<dev>  : set serial device    (default:%s)\n",SEQ_SERIAL);
       printf("   -R[xxx]  : repeat xxx times\n");
       printf("   -r0      : not send initialize data\n");
//       printf("   -r1      : send RESET1 (%s)\n",filename(RESET1));
//       printf("   -r2      : send RESET2 (%s)\n",filename(RESET2));
//       printf("   -r3      : send RESET3 (%s)\n",filename(RESET3));
//       printf("   -r4      : send RESET4 (%s)\n",filename(RESET4));
//       printf("   -s       : shuffle play\n")
#ifndef NO_OSS
       printf("   -serial  : use 0xF5 command to change port\n\n");
#endif
	
#endif

  exit(1);
}