/*

	equalizer: code for loading equalizer settings

	copyright 1995-2008 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 Michael Hipp (exported to this file by Thomas Orgis)

*/

#include "mpg123app.h"

/* Load the settings from the path in the global variable equalfile.

   If there is no file, restore equalizer defaults. 

   If NO_EQUALIZER is defined, it does nothing else that return zero */

int load_equalizer(mpg123_handle *mh)

{

#ifndef NO_EQUALIZER

	if(equalfile != NULL)

	{ /* tst; ThOr: not TRUE or FALSE: allocated or not... */

		FILE *fe;

		int i;

		fe = fopen(equalfile,"r");

		if(fe) {

			char line[256];

			for(i=0;i<32;i++) {

				float e0 = 1.0;

				float e1 = 1.0; /* %f -> float! */

				do /* ignore comments */

				{

					line[0]=0;

					fgets(line,255,fe);

				}

				while(line[0]=='#');

				/* Hm, why not use fscanf? Comments... */

				sscanf(line,"%f %f",&e0,&e1;;

				/* If scanning failed, we have default 1.0 value. */

				mpg123_eq(mh, MPG123_LEFT,  i, e0);

				mpg123_eq(mh, MPG123_RIGHT, i, e1);

			}

			fclose(fe);

		}

		else

		{

			fprintf(stderr,"Can't open equalizer file '%s'\n",equalfile);

			return -1;

		}

	}

	else mpg123_reset_eq(mh);

#endif

	return 0;

}