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/*
* Copyright (c) 2017 Paul B Mahol
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <mysofa.h>
int main(int argc, char **argv)
{
struct MYSOFA_HRTF *hrtf;
int sample_rate;
int err, i, j;
if (argc < 3) {
printf("usage: %s input_SOFA_file output_directory\n", argv[0]);
return 1;
}
hrtf = mysofa_load(argv[1], &err);
if (!hrtf || err) {
printf("invalid input SOFA file: %s\n", argv[1]);
return 1;
}
if (hrtf->DataSamplingRate.elements != 1)
goto fail;
sample_rate = hrtf->DataSamplingRate.values[0];
err = mkdir(argv[2], 0744);
if (err)
goto fail;
err = chdir(argv[2]);
if (err)
goto fail;
for (i = 0; i < hrtf->M; i++) {
FILE *file;
int bps = 32;
int blkalign = 8;
int bytespersec = blkalign * sample_rate;
char filename[1024];
int azi = hrtf->SourcePosition.values[i * 3];
int ele = hrtf->SourcePosition.values[i * 3 + 1];
int dis = hrtf->SourcePosition.values[i * 3 + 2];
int size = 8 * hrtf->N;
int offset = i * 2 * hrtf->N;
snprintf(filename, sizeof(filename), "azi_%d_ele_%d_dis_%d.wav", azi, ele, dis);
file = fopen(filename, "w+");
fwrite("RIFF", 4, 1, file);
fwrite("\xFF\xFF\xFF\xFF", 4, 1, file);
fwrite("WAVE", 4, 1, file);
fwrite("fmt ", 4, 1, file);
fwrite("\x10\x00\00\00", 4, 1, file);
fwrite("\x03\x00", 2, 1, file);
fwrite("\x02\x00", 2, 1, file);
fwrite(&sample_rate, 4, 1, file);
fwrite(&bytespersec, 4, 1, file);
fwrite(&blkalign, 2, 1, file);
fwrite(&bps, 2, 1, file);
fwrite("data", 4, 1, file);
fwrite(&size, 4, 1, file);
for (j = 0; j < hrtf->N; j++) {
float l, r;
l = hrtf->DataIR.values[offset + j];
r = hrtf->DataIR.values[offset + j + hrtf->N];
fwrite(&l, 4, 1, file);
fwrite(&r, 4, 1, file);
}
fclose(file);
}
fail:
mysofa_free(hrtf);
return 0;
}
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