mirror of
https://git.ffmpeg.org/ffmpeg.git
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100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/*
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* Copyright (c) 2017 Paul B Mahol
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <mysofa.h>
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int main(int argc, char **argv)
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{
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struct MYSOFA_HRTF *hrtf;
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int sample_rate;
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int err, i, j;
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if (argc < 3) {
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printf("usage: %s input_SOFA_file output_directory\n", argv[0]);
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return 1;
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}
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hrtf = mysofa_load(argv[1], &err);
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if (!hrtf || err) {
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printf("invalid input SOFA file: %s\n", argv[1]);
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return 1;
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}
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if (hrtf->DataSamplingRate.elements != 1)
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goto fail;
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sample_rate = hrtf->DataSamplingRate.values[0];
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err = mkdir(argv[2], 0744);
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if (err)
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goto fail;
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err = chdir(argv[2]);
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if (err)
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goto fail;
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for (i = 0; i < hrtf->M; i++) {
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FILE *file;
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int bps = 32;
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int blkalign = 8;
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int bytespersec = blkalign * sample_rate;
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char filename[1024];
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int azi = hrtf->SourcePosition.values[i * 3];
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int ele = hrtf->SourcePosition.values[i * 3 + 1];
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int dis = hrtf->SourcePosition.values[i * 3 + 2];
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int size = 8 * hrtf->N;
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int offset = i * 2 * hrtf->N;
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snprintf(filename, sizeof(filename), "azi_%d_ele_%d_dis_%d.wav", azi, ele, dis);
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file = fopen(filename, "w+");
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fwrite("RIFF", 4, 1, file);
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fwrite("\xFF\xFF\xFF\xFF", 4, 1, file);
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fwrite("WAVE", 4, 1, file);
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fwrite("fmt ", 4, 1, file);
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fwrite("\x10\x00\00\00", 4, 1, file);
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fwrite("\x03\x00", 2, 1, file);
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fwrite("\x02\x00", 2, 1, file);
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fwrite(&sample_rate, 4, 1, file);
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fwrite(&bytespersec, 4, 1, file);
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fwrite(&blkalign, 2, 1, file);
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fwrite(&bps, 2, 1, file);
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fwrite("data", 4, 1, file);
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fwrite(&size, 4, 1, file);
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for (j = 0; j < hrtf->N; j++) {
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float l, r;
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l = hrtf->DataIR.values[offset + j];
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r = hrtf->DataIR.values[offset + j + hrtf->N];
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fwrite(&l, 4, 1, file);
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fwrite(&r, 4, 1, file);
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}
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fclose(file);
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}
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fail:
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mysofa_free(hrtf);
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return 0;
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}
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