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Diffstat (limited to 'tutorials/sndkit/tests/musicin.c')
| -rw-r--r-- | tutorials/sndkit/tests/musicin.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/tutorials/sndkit/tests/musicin.c b/tutorials/sndkit/tests/musicin.c new file mode 100644 index 0000000..651e27a --- /dev/null +++ b/tutorials/sndkit/tests/musicin.c @@ -0,0 +1,222 @@ +/* + * Purpose: A program that demonstrates MIDI input with /dev/music (obsolete) + * Copyright (C) 4Front Technologies, 2002-2004. Released under GPLv2/CDDL. + * + * Description: + * This program was supposed to be a sample program for doing MIDI input + * with the /dev/music interface. However it has not much use since the + * /dev/music interface is now obsoleted. + * + * The /dev/midi interface is recommended in the new applications. Please + * see the "{!link MIDI}" section of the OSS Developer's manual. + */ +#include <soundcard.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> + +void +decode_event (unsigned char *ev) +{ + int i; + + for (i = 0; i < 8; i++) + { + printf ("%02x ", ev[i]); + } + + printf (": "); + + switch (ev[0]) + { + case EV_CHN_VOICE: + printf ("EV_CHN_VOICE(%d)\t| ", ev[1]); + switch (ev[2]) + { + case MIDI_NOTEON: + printf ("Note On ch%d note%d vel%d", ev[3], ev[4], ev[5]); + break; + + case MIDI_NOTEOFF: + printf ("Note Off ch%d note%d vel%d", ev[3], ev[4], ev[5]); + break; + + case MIDI_KEY_PRESSURE: + printf ("KPressure ch%d note%d vel%d", ev[3], ev[4], ev[5]); + break; + + default: + printf ("*** Unknown ***"); + } + break; + + case EV_CHN_COMMON: + printf ("EV_CHN_COMMON\tdev%d\t| ", ev[1]); + switch (ev[2]) + { + case MIDI_CHN_PRESSURE: + printf ("MIDI_CHN_PRESSURE ch%d %d", ev[3], ev[4]); + break; + case MIDI_PGM_CHANGE: + printf ("MIDI_PGM_CHANGE ch%d %d", ev[3], ev[4]); + break; + case MIDI_CTL_CHANGE: + printf ("MIDI_CTL_CHANGE ch%d %d,%d", ev[3], ev[4], + *(short *) &ev[6]); + break; + case MIDI_PITCH_BEND: + printf ("MIDI_CTL_CHANGE ch%d %d", ev[3], *(short *) &ev[6]); + break; + default: + printf ("*** Unknown ***"); + } + break; + + case EV_SYSEX: + printf ("EV_SYSEX\tdev%d: ", ev[1]); + for (i = 2; i < 8; i++) + printf ("%02x ", ev[i]); + break; + + case EV_TIMING: + printf ("EV_TIMING\t\t| "); + switch (ev[1]) + { + case TMR_START: + printf ("TMR_START\t"); + break; + case TMR_STOP: + printf ("TMR_STOP\t"); + break; + case TMR_CONTINUE: + printf ("TMR_CONTINUE\t"); + break; + case TMR_WAIT_ABS: + printf ("TMR_WAIT_ABS\t%10u", *(unsigned int *) &ev[4]); + break; + case TMR_WAIT_REL: + printf ("TMR_WAIT_REL\t%10u", *(unsigned int *) &ev[4]); + break; + case TMR_ECHO: + printf ("TMR_ECHO\t%10u", *(unsigned int *) &ev[4]); + break; + case TMR_TEMPO: + printf ("TMR_TEMPO\t%10u", *(unsigned int *) &ev[4]); + break; + case TMR_SPP: + printf ("TMR_SPP\t%10u", *(unsigned int *) &ev[4]); + break; + case TMR_TIMESIG: + printf ("TMR_TIMESIG\t%10u", *(unsigned int *) &ev[4]); + break; + } + break; + + case EV_SEQ_LOCAL: + printf ("EV_SEQ_LOCAL\t*** Should not happen ***"); + break; + + case EV_SYSTEM: + printf ("EV_SYSTEM(%d)\t\t| ", ev[1]); + switch (ev[2]) + { + case 0xf0: + printf ("SysEx *** Should not happen ***"); + break; + + case 0xf1: + printf ("MTC Qframe %02x", ev[3]); + break; + + case 0xf2: + printf ("Songpos ptr %02x,%02x", ev[3], ev[4]); + break; + + case 0xf3: + printf ("Song select %02x", ev[3]); + break; + + case 0xf4: + case 0xf5: + printf ("*** Undefined ***"); + break; + + case 0xf6: + printf ("Tune request"); + break; + + case 0xf7: + printf ("EOX"); + break; + case 0xf8: + printf ("Timing clock"); + break; + case 0xf9: + printf ("** Undefined ***"); + break; + case 0xfa: + printf ("Start"); + break; + case 0xfb: + printf ("Continue"); + break; + case 0xfc: + printf ("Stop"); + break; + case 0xfd: + printf ("** Undefined ***"); + break; + case 0xfe: + printf ("Active sensing"); + break; + case 0xff: + printf ("SYSTEM RESET"); + break; + } + break; + + default: + printf ("*** Unknown event type ***"); + } + printf ("\n"); +} + +int +main (int argc, int *argv[]) +{ + int fd, l, i; + unsigned char buf[4096]; + + if ((fd = open ("/dev/music", O_RDONLY, 0)) == -1) + { + perror ("/dev/music"); + exit (-1); + } + + if (ioctl (fd, SNDCTL_SEQ_ACTSENSE_ENABLE, 0) == -1) + { + perror ("/dev/music ACTSENSE_ENABLE"); + exit (-1); + } + + if (ioctl (fd, SNDCTL_SEQ_TIMING_ENABLE, 0) == -1) + { + perror ("/dev/music TIMING_ENABLE"); + exit (-1); + } + + if (ioctl (fd, SNDCTL_SEQ_RT_ENABLE, 0) == -1) + { + perror ("/dev/music RT_ENABLE"); + exit (-1); + } + + while ((l = read (fd, buf, sizeof (buf))) != -1) + { + for (i = 0; i < l; i += 8) + { + decode_event (&buf[i]); + } + } +} |