mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-01-31 01:51:00 +00:00
a745fc3757
added libraries: opus flac libsndfile updated: libvorbis libogg openal - Everything works as expected for now. Bare in mind libsndfile needed the check for whether or not it could find the xiph libraries removed in order for this to work.
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/*
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** Copyright (C) 2007-2012 Erik de Castro Lopo <erikd@mega-nerd.com>
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "sfconfig.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <sndfile.h>
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#include "utils.h"
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#include "generate.h"
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#define SF_MAX(x, y) ((x) > (y) ? (x) : (y))
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static float crappy_snare (float *output, int len, int offset, float gain, float maxabs) ;
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void
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generate_file (const char * filename, int format, int len)
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{ float * output ;
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float maxabs = 0.0 ;
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output = calloc (len, sizeof (float)) ;
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maxabs = crappy_snare (output, len, 0, 0.95f, maxabs) ;
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maxabs = crappy_snare (output, len, len / 4, 0.85f, maxabs) ;
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maxabs = crappy_snare (output, len, 2 * len / 4, 0.85f, maxabs) ;
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crappy_snare (output, len, 3 * len / 4, 0.85f, maxabs) ;
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write_mono_file (filename, format, 44100, output, len) ;
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free (output) ;
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} /* generate_file */
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static inline float
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rand_float (void)
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{ return rand () / (0.5f * (float) RAND_MAX) - 1.0f ;
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} /* rand_float */
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static float
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crappy_snare (float *output, int len, int offset, float gain, float maxabs)
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{ int k ;
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float env = 0.0f ;
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for (k = offset ; k < len && env < gain ; k++)
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{ env += 0.03f ;
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output [k] += env * rand_float () ;
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maxabs = SF_MAX (maxabs, fabsf (output [k])) ;
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} ;
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for ( ; k < len && env > 1e-8 ; k++)
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{ env *= 0.995f ;
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output [k] += env * rand_float () ;
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maxabs = SF_MAX (maxabs, fabsf (output [k])) ;
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} ;
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return maxabs ;
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} /* crappy_snare */
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