libnjb: tracks.c

libnjb 2.2.7

- Main Page
- Modules
- Data Structures
- Files
- Examples

tracks.c
#include "common.h"
#include <stdio.h>
#include <string.h>
static void songid_frame_dump (njb_songid_frame_t *frame, FILE *fp)
{
fprintf(fp, "%s: ", frame->label);
if ( frame->type == NJB_TYPE_STRING ) {
fprintf(fp, "%s\n", frame->data. strval);
} else if (frame->type == NJB_TYPE_UINT16) {
fprintf(fp, "%d\n", frame->data. u_int16_val);
} else if (frame->type == NJB_TYPE_UINT32) {
fprintf(fp, "%u\n", frame->data. u_int32_val);
} else {
fprintf(fp, "(weird data word size, cannot display!)\n");
}
}
static void songid_dump (njb_songid_t *song, FILE *fp)
{
njb_songid_frame_t *frame;
NJB_Songid_Reset_Getframe(song);
fprintf(fp, "ID: %u\n", song->trid);
while( (frame = NJB_Songid_Getframe(song)) ) {
songid_frame_dump(frame, fp);
}
}
int main (int argc, char **argv)
{
njb_t njbs[NJB_MAX_DEVICES], *njb;
extern char *optarg;
int opt;
int n, debug, rc = 1;
int extended = 0; /* Whether to get extended track info */
njb_songid_t *songtag;
char *lang;
debug= 0;
while ( (opt= getopt(argc, argv, "D:E")) != -1 ) {
switch (opt) {
case 'D':
debug = atoi(optarg);
break;
case 'E':
extended = 1;
break;
default:
fprintf(stderr, "usage: tracks [ -D debuglvl ] -E\n");
return 1;
}
}
if ( debug ) NJB_Set_Debug(debug);
/*
* Check environment variables $LANG and $LC_CTYPE
* to see if we want to support UTF-8 unicode
* $LANG = "xx_XX.UTF-8" or $LC_CTYPE = "?"
* trigger unicode support.
*/
lang = getenv("LANG");
if (lang != NULL) {
if (strlen(lang) > 5) {
if (!strcmp(&lang[strlen(lang)-5], "UTF-8")) {
NJB_Set_Unicode(NJB_UC_UTF8);
}
}
}
if (NJB_Discover(njbs, 0, &n) == -1) {
fprintf(stderr, "could not locate any jukeboxes\n");
return 1;
}
if ( n == 0 ) {
fprintf(stderr, "no NJB devices found\n");
return 0;
}
njb = njbs;
if ( NJB_Open(njb) == -1 ) {
NJB_Error_Dump(njb,stderr);
return 1;
}
if ( NJB_Capture(njb) == -1 ) {
NJB_Error_Dump(njb,stderr);
goto err1;
}
if (extended != 0) {
NJB_Get_Extended_Tags(njb, 1);
}
n = 0;
NJB_Reset_Get_Track_Tag(njb);
while ( (songtag = NJB_Get_Track_Tag(njb)) ) {
songid_dump(songtag, stdout);
NJB_Songid_Destroy(songtag);
printf("----------------------------------\n");
n ++;
}
/* Dump any pending errors */
if (NJB_Error_Pending(njb)) {
NJB_Error_Dump(njb,stderr);
}
printf("In total: %u tracks.\n", n);
NJB_Release(njb);
rc = 0;
err1:
NJB_Close(njb);
return rc;
}