56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
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/*
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equalizer: code for loading equalizer settings
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copyright 1995-2019 by the mpg123 project - free software under the terms of the LGPL 2.1
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see COPYING and AUTHORS files in distribution or http://mpg123.org
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initially written by Michael Hipp (exported to this file by Thomas Orgis)
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*/
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#include "mpg123app.h"
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#include "common/debug.h"
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/* Load the settings from the path in the global variable equalfile.
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If there is no file, restore equalizer defaults.
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If NO_EQUALIZER is defined, it does nothing else that return zero */
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int load_equalizer(mpg123_handle *mh)
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{
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#ifndef NO_EQUALIZER
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if(equalfile != NULL)
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{ /* tst; ThOr: not TRUE or FALSE: allocated or not... */
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FILE *fe;
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int i;
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fe = fopen(equalfile,"r");
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if(fe) {
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char line[256];
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for(i=0;i<32;i++) {
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float e0 = 1.0;
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float e1 = 1.0; /* %f -> float! */
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do /* ignore comments */
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{
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line[0]=0;
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if(!fgets(line,255,fe))
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{
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error("equalizer file read error");
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return -1;
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}
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}
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while(line[0]=='#');
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/* Hm, why not use fscanf? Comments... */
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sscanf(line,"%f %f",&e0,&e1);
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/* If scanning failed, we have default 1.0 value. */
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mpg123_eq(mh, MPG123_LEFT, i, e0);
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mpg123_eq(mh, MPG123_RIGHT, i, e1);
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}
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fclose(fe);
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}
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else
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{
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merror("Can't open equalizer file '%s'.",equalfile);
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return -1;
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}
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}
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else mpg123_reset_eq(mh);
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#endif
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return 0;
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}
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