utils/sofa-info.cpp

   1 /*
   2  * SOFA info utility for inspecting SOFA file metrics and determining HRTF
   3  * utility compatible layouts.
   4  *
   5  * Copyright (C) 2018-2019  Christopher Fitzgerald
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Or visit:  http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
  22  */
  23
  24 #include <stdio.h>
  25
  26 #include <memory>
  27 #include <vector>
  28
  29 #include "sofa-support.h"
  30
  31 #include "mysofa.h"
  32
  33 #include "win_main_utf8.h"
  34
  35 using uint = unsigned int;
  36
  37 static void PrintSofaAttributes(const char *prefix, struct MYSOFA_ATTRIBUTE *attribute)
  38 {
  39     while(attribute)
  40     {
  41         fprintf(stdout, "%s.%s: %s\n", prefix, attribute->name, attribute->value);
  42         attribute = attribute->next;
  43     }
  44 }
  45
  46 static void PrintSofaArray(const char *prefix, struct MYSOFA_ARRAY *array)
  47 {
  48     PrintSofaAttributes(prefix, array->attributes);
  49     for(uint i{0u};i < array->elements;i++)
  50         fprintf(stdout, "%s[%u]: %.6f\n", prefix, i, array->values[i]);
  51 }
  52
  53 /* Attempts to produce a compatible layout.  Most data sets tend to be
  54  * uniform and have the same major axis as used by OpenAL Soft's HRTF model.
  55  * This will remove outliers and produce a maximally dense layout when
  56  * possible.  Those sets that contain purely random measurements or use
  57  * different major axes will fail.
  58  */
  59 static void PrintCompatibleLayout(const uint m, const float *xyzs)
  60 {
  61     fputc('\n', stdout);
  62
  63     auto fds = GetCompatibleLayout(m, xyzs);
  64     if(fds.empty())
  65     {
  66         fprintf(stdout, "No compatible field layouts in SOFA file.\n");
  67         return;
  68     }
  69
  70     uint used_elems{0};
  71     for(size_t fi{0u};fi < fds.size();++fi)
  72     {
  73         for(uint ei{fds[fi].mEvStart};ei < fds[fi].mEvCount;++ei)
  74             used_elems += fds[fi].mAzCounts[ei];
  75     }
  76
  77     fprintf(stdout, "Compatible Layout (%u of %u measurements):\n\ndistance = %.3f", used_elems, m,
  78         fds[0].mDistance);
  79     for(size_t fi{1u};fi < fds.size();fi++)
  80         fprintf(stdout, ", %.3f", fds[fi].mDistance);
  81
  82     fprintf(stdout, "\nazimuths = ");
  83     for(size_t fi{0u};fi < fds.size();++fi)
  84     {
  85         for(uint ei{0u};ei < fds[fi].mEvStart;++ei)
  86             fprintf(stdout, "%d%s", fds[fi].mAzCounts[fds[fi].mEvCount - 1 - ei], ", ");
  87         for(uint ei{fds[fi].mEvStart};ei < fds[fi].mEvCount;++ei)
  88             fprintf(stdout, "%d%s", fds[fi].mAzCounts[ei],
  89                 (ei < (fds[fi].mEvCount - 1)) ? ", " :
  90                 (fi < (fds.size() - 1)) ? ";\n           " : "\n");
  91     }
  92 }
  93
  94 // Load and inspect the given SOFA file.
  95 static void SofaInfo(const char *filename)
  96 {
  97     int err;
  98     MySofaHrtfPtr sofa{mysofa_load(filename, &err)};
  99     if(!sofa)
 100     {
 101         fprintf(stdout, "Error: Could not load source file '%s' (%s).\n", filename,
 102             SofaErrorStr(err));
 103         return;
 104     }
 105
 106     /* NOTE: Some valid SOFA files are failing this check. */
 107     err = mysofa_check(sofa.get());
 108     if(err != MYSOFA_OK)
 109         fprintf(stdout, "Warning: Supposedly malformed source file '%s' (%s).\n", filename,
 110             SofaErrorStr(err));
 111
 112     mysofa_tocartesian(sofa.get());
 113
 114     PrintSofaAttributes("Info", sofa->attributes);
 115
 116     fprintf(stdout, "Measurements: %u\n", sofa->M);
 117     fprintf(stdout, "Receivers: %u\n", sofa->R);
 118     fprintf(stdout, "Emitters: %u\n", sofa->E);
 119     fprintf(stdout, "Samples: %u\n", sofa->N);
 120
 121     PrintSofaArray("SampleRate", &sofa->DataSamplingRate);
 122     PrintSofaArray("DataDelay", &sofa->DataDelay);
 123
 124     PrintCompatibleLayout(sofa->M, sofa->SourcePosition.values);
 125 }
 126
 127 int main(int argc, char *argv[])
 128 {
 129     if(argc != 2)
 130     {
 131         fprintf(stdout, "Usage: %s <sofa-file>\n", argv[0]);
 132         return 0;
 133     }
 134
 135     SofaInfo(argv[1]);
 136
 137     return 0;
 138 }
 139