cdtoc.c

对SCSI设备 直接存取的通用库

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <scsi/all.h>
#include <scsi/cd.h>



char *prg;



int
main(int argc, char **argv)
{
    SCSI *fd;
    int i, len, msf = 1;
    struct sc_inquiry inq;
    struct sc_cd_toc *toc;
    
    prg = argv[0];

    if (argc > 1) {
	if (!strcmp(argv[1], "-b")) {
	    msf = 0;
	    --argc;
	    argv++;
	}
	else if (!strcmp(argv[1], "--")) {
	    --argc;
	    argv++;
	}
	else if (argv[1][0] == '-') {
	    fprintf(stderr, "usage: %s [-b] device\n", prg);
	    exit(1);
	}
    }

    if (argc != 2) {
	fprintf(stderr, "usage: %s [-b] device\n", prg);
	exit(1);
    }

    if ((fd=sc_open(argv[1])) == NULL) {
	fprintf(stderr, "%s: can't open device %s: %s\n",
		prg, argv[1], strerror(errno));
	exit(1);
    }
    
    if (sc_inquiry(fd, &inq) < 0) {
	sc_fstatus(fd, stderr, prg, "inquiry", 3);
	sc_close(fd);
	exit(1);
    }

    if (inq.type != 5 && inq.type != 4) {
	fprintf(stderr, "%s: device %s is no cdrom (it's type %d)\n",
		prg, argv[1], inq.type);
	sc_close(fd);
	exit(1);
    }

    len = sizeof(struct sc_cd_toc) + 99*sizeof(struct sc_cd_toc_track);
    if ((toc=(struct sc_cd_toc *)malloc(len)) == NULL) {
	fprintf(stderr, "%s: malloc failure\n");
	sc_close(fd);
	exit(1);
    }

    if (sc_cd_read_toc(fd, msf, 0, len, toc) < 0) {
	sc_fstatus(fd, stderr, prg, "cd-read-toc", 3);
	sc_close(fd);
	exit(1);
    }

    for (i=0; i<toc->notr; i++) {
	if (toc->track[i].number < 100)
	    printf("%02d: ", toc->track[i].number);
	else
	    printf("--: ");
	if (msf)
	    printf("%02d:%02d:%02d",
		   toc->track[i].addr>>16,
		   (toc->track[i].addr>>8) & 0xff,
		   toc->track[i].addr & 0xff);
	else
	    printf("0x%08x", toc->track[i].addr);
	if (toc->track[i].number < 100) {
	    if (toc->track[i].ctrl & 0x4)
		printf(" data");
	    else {
#define bit(x, s)	((toc->track[i].ctrl & (x)) ? (s) : "")
		printf(" %saudio%s",
		       bit(0x8, "4-channel "),
		       bit(0x1, " with pre-emphasis"));
	    }
	    printf("%s\n", bit(0x2, " (no digital copy)"));
	}
	else
	    printf(" leadout\n");
    }
	
    sc_close(fd);

    exit(0);
}