/*

	scan: Estimate length (sample count) of a mpeg file and compare to length from exact scan.

	copyright 2007 by the mpg123 project - free software under the terms of the LGPL 2.1

	see COPYING and AUTHORS files in distribution or http://mpg123.org

	initially written by Thomas Orgis

*/

/* Note the lack of error checking here.

   While it would be nicer to inform the user about troubles, libmpg123 is designed _not_ to bite you on operations with invalid handles , etc.

  You just jet invalid results on invalid operations... */

#include <mpg123.h>

#include <stdio.h>

int _tmain(int argc, _TCHAR* argv[])

{

	mpg123_handle *m;

	int i;

	if(argc < 2)

	{

		fprintf(stderr, "\nI will give you the estimated and exact sample lengths of MPEG audio files.\n");

		fprintf(stderr, "\nUsage: %ls <mpeg audio file list>\n\n", argv[0]);

		return -1;

	}

	mpg123_init();

	m = mpg123_new(NULL, NULL);

	mpg123_param(m, MPG123_RESYNC_LIMIT, -1, 0); /* New in library version 0.0.1 . */

	for(i = 1; i < argc; ++i)

	{

		off_t a, b;

		mpg123_topen(m, argv[i]);

		a = mpg123_length(m);		

		mpg123_scan(m);

		b = mpg123_length(m);

		mpg123_tclose(m);

		printf("File %i: estimated %li vs. scanned %li\n", i, (long)a, (long)b);

	}

	mpg123_delete(m);

	mpg123_exit();

	return 0;

}