* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
+/*
+ * WATCHOUT - this is meant to be very lightweight an not even dependent
+ * on libFLAC, so there are a couple places where FLAC__* variables are
+ * duplicated here. Look for 'DUPLICATE:' in comments.
+ */
+
#include <assert.h>
#include <ctype.h>
#include <stdarg.h>
#include <string.h>
#include "FLAC/all.h"
+static const char *sync_string_ = "fLaC"; /* DUPLICATE:FLAC__STREAM_SYNC_STRING */
+
static int usage(const char *message, ...);
+static bool list(FILE *f, bool verbose);
int main(int argc, char *argv[])
{
- bool verbose, list_mode;
+ int i;
+ bool verbose = false, list_mode = true;
if(argc <= 1)
return usage(0);
if(i + (list_mode? 1:2) != argc)
return usage("ERROR: invalid arguments (more/less than %d filename%s?)\n", (list_mode? 1:2), (list_mode? "":"s"));
+ if(list_mode) {
+ FILE *f = fopen(argv[i], "r");
+
+ if(0 == f) {
+ fprintf(stderr, "ERROR opening %s\n", argv[i]);
+ return 1;
+ }
+
+ if(!list(f, verbose))
+ return 1;
+
+ fclose(f);
+ }
+
return 0;
}
return 1;
}
+
+bool list(FILE *f, bool verbose)
+{
+ static byte buf[65536];
+ FLAC__StreamMetaData metadata;
+
+ /* read the stream sync code */
+ if(fread(buf, 1, 4, f) < 4 || memcmp(buf, sync_string_, 4)) {
+ fprintf(stderr, "ERROR: not a FLAC file (no '%s' header)\n", sync_string_);
+ return false;
+ }
+
+ /* read the metadata blocks */
+ do {
+ /* read the metadata block header */
+ if(fread(buf, 1, 4, f) < 4) {
+ fprintf(stderr, "ERROR: short count reading metadata block header\n");
+ return false;
+ }
+ metadata.is_last = (buf[0] & 0x80)? true:false;
+ metadata.type = (FLAC__MetaDataType)(buf[0] & 0x7f);
+ metadata.length = (((unsigned)buf[1]) << 16) | (((unsigned)buf[2]) << 8) | ((unsigned)buf[3]);
+
+ /* read the metadata block data */
+
+ /* print it */
+ printf("METADATA block:\n");
+ printf("\ttype: %u\n", (unsigned)metadata.type);
+ printf("\tis last: %s\n", metadata.is_last? "true":"false");
+ printf("\tlength: %u\n", metadata.length);
+ } while (!metadata.is_last);
+
+ return true;
+}