aztcd

《嵌入式系统设计与实例开发实验教材二源码》Linux内核移植与编译实验

          V0.3  W.Zimmermann: Additional functions. Nov. 28, 1994          
          V0.4  W.Zimmermann: fixed some bugs. Dec. 17, 1994
          V0.5  W.Zimmermann: clean 'scanf' commands without compiler warnings
                              Jan. 6, 1995
          V0.6  W.Zimmermann: volume control (still experimental). Jan. 24, 1995
          V0.7  W.Zimmermann: read raw modified. July 26, 95
*/

#include <stdio.h>
#include <ctype.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/cdrom.h>
#include <linux/../../drivers/cdrom/aztcd.h>

void help(void)
{ printf("Available Commands:  STOP         s      EJECT/CLOSE  e       QUIT         q\n");
  printf("                     PLAY TRACK   t      PAUSE        p       RESUME       r\n");
  printf("                     NEXT TRACK   n      REPEAT LAST  l       HELP         h\n");
  printf("                     SUB CHANNEL  c      TRACK INFO   i       PLAY AT      a\n");
  printf("                     READ         d      READ RAW     w       VOLUME       v\n");
}

int main(void)
{ int handle;
  unsigned char command=' ', ini=0, first=1, last=1;
  unsigned int cmd, i,j,k, arg1,arg2,arg3;
  struct cdrom_ti       ti;
  struct cdrom_tochdr   tocHdr;
  struct cdrom_subchnl  subchnl;
  struct cdrom_tocentry entry;
  struct cdrom_msf      msf;
  union  { struct cdrom_msf msf;
           unsigned char buf[CD_FRAMESIZE_RAW];
         } azt;
  struct cdrom_volctrl  volctrl;

  printf("\nMini-Audio CD-Player V0.72   (C) 1994,1995,1996  W.Zimmermann\n");
  handle=open("/dev/cdrom",O_RDWR);
  ioctl(handle,CDROMRESUME);
  
  if (handle<=0) 
    { printf("Drive Error: already playing, no audio disk, door open\n");
      printf("             or no permission (you must be ROOT in order to use this program)\n");
    }
  else
    { help();
      while (1)
        { printf("Type command (h = help):  ");
          scanf("%s",&command); 
          switch (command)
            { case 'e':   cmd=CDROMEJECT;
                          ioctl(handle,cmd);
                          break;  
              case 'p':   if (!ini)
                             { printf("Command not allowed - play track first\n");
                             }
                          else
                             { cmd=CDROMPAUSE;
                               if (ioctl(handle,cmd)) printf("Drive Error\n");
                             }
                          break;
              case 'r':   if (!ini)
                             { printf("Command not allowed - play track first\n");
                             }
                          else
                             { cmd=CDROMRESUME;
                               if (ioctl(handle,cmd)) printf("Drive Error\n");
                             }
                          break;
              case 's':   cmd=CDROMPAUSE;
                          if (ioctl(handle,cmd)) printf("Drive error or already stopped\n");
                          cmd=CDROMSTOP;
                          if (ioctl(handle,cmd)) printf("Drive error\n");
                          break;
              case 't':   cmd=CDROMREADTOCHDR;
                          if (ioctl(handle,cmd,&tocHdr)) printf("Drive Error\n");
                          first=tocHdr.cdth_trk0;
                          last= tocHdr.cdth_trk1;
                          if ((first==0)||(first>last))
                            { printf ("--could not read TOC\n");
                            }
                          else
                            { printf("--first track: %d   --last track: %d   --enter track number: ",first,last);
                              cmd=CDROMPLAYTRKIND;
                              scanf("%i",&arg1);
                              ti.cdti_trk0=arg1;
                              if (ti.cdti_trk0<first) ti.cdti_trk0=first;
                              if (ti.cdti_trk0>last)  ti.cdti_trk0=last;
                              ti.cdti_ind0=0;
                              ti.cdti_trk1=last;
                              ti.cdti_ind1=0;
                              if (ioctl(handle,cmd,&ti)) printf("Drive Error\n");
                              ini=1;
                            } 
                          break;
              case 'n':   if (!ini++) 
                            { if (ioctl(handle,CDROMREADTOCHDR,&tocHdr)) printf("Drive Error\n");
                              first=tocHdr.cdth_trk0;
                              last= tocHdr.cdth_trk1;
                              ti.cdti_trk0=first-1;
                            }
                          if ((first==0)||(first>last))
                            { printf ("--could not read TOC\n");
                            }
                          else
                            { cmd=CDROMPLAYTRKIND;
                              if (++ti.cdti_trk0 > last)  ti.cdti_trk0=last;
                              ti.cdti_ind0=0;
                              ti.cdti_trk1=last;
                              ti.cdti_ind1=0;
                              if (ioctl(handle,cmd,&ti)) printf("Drive Error\n");
                              ini=1;
                            }
                          break;
              case 'l':   if (!ini++)
                            { if (ioctl(handle,CDROMREADTOCHDR,&tocHdr)) printf("Drive Error\n");
                              first=tocHdr.cdth_trk0;
                              last= tocHdr.cdth_trk1;
                              ti.cdti_trk0=first+1;
                            }
                          if ((first==0)||(first>last))
                            { printf ("--could not read TOC\n");
                            }
                          else
                            { cmd=CDROMPLAYTRKIND;
                              if (--ti.cdti_trk0 < first) ti.cdti_trk0=first;
                              ti.cdti_ind0=0;
                              ti.cdti_trk1=last;
                              ti.cdti_ind1=0;
                              if (ioctl(handle,cmd,&ti)) printf("Drive Error\n");
                              ini=1;
                            }  
                          break;
              case 'c':   subchnl.cdsc_format=CDROM_MSF;
                          if (ioctl(handle,CDROMSUBCHNL,&subchnl)) 
                            printf("Drive Error\n");
                          else
                            { printf("AudioStatus:%s   Track:%d  Mode:%d   MSF=%d:%d:%d\n", \
                              subchnl.cdsc_audiostatus==CDROM_AUDIO_PLAY ? "PLAYING":"NOT PLAYING",\
                              subchnl.cdsc_trk,subchnl.cdsc_adr, \
                              subchnl.cdsc_absaddr.msf.minute, subchnl.cdsc_absaddr.msf.second, \
                              subchnl.cdsc_absaddr.msf.frame);
                            }
                          break;              
              case 'i':   if (!ini)
                            { printf("Command not allowed - play track first\n");
                            }
                          else
                            { cmd=CDROMREADTOCENTRY;
                              printf("Track No.: ");
                              scanf("%d",&arg1);
                              entry.cdte_track=arg1;
                              if (entry.cdte_track<first) entry.cdte_track=first;
                              if (entry.cdte_track>last)  entry.cdte_track=last;
			      entry.cdte_format=CDROM_MSF;
                              if (ioctl(handle,cmd,&entry)) 
                               { printf("Drive error or invalid track no.\n");
                               }
                              else
                               { printf("Mode %d Track, starts at %d:%d:%d\n", \
                               entry.cdte_adr,entry.cdte_addr.msf.minute, \
                               entry.cdte_addr.msf.second,entry.cdte_addr.msf.frame);
                               }
                            }
                          break;
              case 'a':   cmd=CDROMPLAYMSF;
                          printf("Address (min:sec:frame)  ");
                          scanf("%d:%d:%d",&arg1,&arg2,&arg3);
                          msf.cdmsf_min0  =arg1;
                          msf.cdmsf_sec0  =arg2;
                          msf.cdmsf_frame0=arg3;
                          if (msf.cdmsf_sec0  > 59) msf.cdmsf_sec0  =59;
                          if (msf.cdmsf_frame0> 74) msf.cdmsf_frame0=74;
                          msf.cdmsf_min1=60;
                          msf.cdmsf_sec1=00;
                          msf.cdmsf_frame1=00;
                          if (ioctl(handle,cmd,&msf)) 
                           { printf("Drive error or invalid address\n");
                           }
                          break;
#ifdef AZT_PRIVATE_IOCTLS /*not supported by every CDROM driver*/
              case 'd':   cmd=CDROMREADCOOKED;
                          printf("Address (min:sec:frame)  ");
                          scanf("%d:%d:%d",&arg1,&arg2,&arg3);
                          azt.msf.cdmsf_min0  =arg1;
                          azt.msf.cdmsf_sec0  =arg2;
                          azt.msf.cdmsf_frame0=arg3;
                          if (azt.msf.cdmsf_sec0  > 59) azt.msf.cdmsf_sec0  =59;
                          if (azt.msf.cdmsf_frame0> 74) azt.msf.cdmsf_frame0=74;
                          if (ioctl(handle,cmd,&azt.msf)) 
                           { printf("Drive error, invalid address or unsupported command\n");
                           }
                          k=0;
                          getchar();
                          for (i=0;i<128;i++)
                           { printf("%4d:",i*16);
                             for (j=0;j<16;j++)
                               { printf("%2x ",azt.buf[i*16+j]);
                               }
                             for (j=0;j<16;j++)
                               { if (isalnum(azt.buf[i*16+j])) 
                                   printf("%c",azt.buf[i*16+j]);
                                 else
                                   printf(".");
                               }
                             printf("\n"); 
                             k++;
                             if (k>=20)
                              { printf("press ENTER to continue\n");
                                getchar();
                                k=0;
                              }
                           } 
                          break;
              case 'w':   cmd=CDROMREADRAW;
                          printf("Address (min:sec:frame)  ");
                          scanf("%d:%d:%d",&arg1,&arg2,&arg3);
                          azt.msf.cdmsf_min0  =arg1;
                          azt.msf.cdmsf_sec0  =arg2;
                          azt.msf.cdmsf_frame0=arg3;                          
                          if (azt.msf.cdmsf_sec0  > 59) azt.msf.cdmsf_sec0  =59;
                          if (azt.msf.cdmsf_frame0> 74) azt.msf.cdmsf_frame0=74;
                          if (ioctl(handle,cmd,&azt)) 
                           { printf("Drive error, invalid address or unsupported command\n");
                           }
                          k=0;
                          for (i=0;i<147;i++)
                           { printf("%4d:",i*16);
                             for (j=0;j<16;j++)
                               { printf("%2x ",azt.buf[i*16+j]);
                               }
                             for (j=0;j<16;j++)
                               { if (isalnum(azt.buf[i*16+j])) 
                                   printf("%c",azt.buf[i*16+j]);
                                 else
                                   printf(".");
                               }
                             printf("\n"); 
                             k++;
                             if (k>=20)
                              { getchar();
                                k=0;
                              }
                           } 
                          break;
#endif
              case 'v':   cmd=CDROMVOLCTRL;
                          printf("--Channel 0 Left  (0-255): ");
                          scanf("%d",&arg1);
                          printf("--Channel 1 Right (0-255): ");
                          scanf("%d",&arg2);
                          volctrl.channel0=arg1;
                          volctrl.channel1=arg2;
                          volctrl.channel2=0;
                          volctrl.channel3=0;
                          if (ioctl(handle,cmd,&volctrl)) 
                           { printf("Drive error or unsupported command\n");
                           }
                          break;  
              case 'q':   if (close(handle)) printf("Drive Error: CLOSE\n");
                          exit(0);
              case 'h':   help();
                          break;
              default:    printf("unknown command\n");
                          break;
            }
       }
    }
  return 0;
}