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 <cstdio>
  25 #include <memory>
  26 #include <string>
  27 #include <string_view>
  28 #include <vector>
  29
  30 #include "alnumeric.h"
  31 #include "alspan.h"
  32 #include "alstring.h"
  33
  34 #include "sofa-support.h"
  35
  36 #include "mysofa.h"
  37
  38 #include "win_main_utf8.h"
  39
  40 namespace {
  41
  42 using uint = unsigned int;
  43
  44 void PrintSofaAttributes(const char *prefix, MYSOFA_ATTRIBUTE *attribute)
  45 {
  46     while(attribute)
  47     {
  48         printf("%s.%s: %s\n", prefix, attribute->name, attribute->value);
  49         attribute = attribute->next;
  50     }
  51 }
  52
  53 void PrintSofaArray(const char *prefix, MYSOFA_ARRAY *array, bool showValues=true)
  54 {
  55     PrintSofaAttributes(prefix, array->attributes);
  56     if(showValues)
  57     {
  58         const auto values = al::span{array->values, array->elements};
  59         for(size_t i{0u};i < values.size();++i)
  60             printf("%s[%zu]: %.6f\n", prefix, i, values[i]);
  61     }
  62     else
  63         printf("%s[...]: <%u values suppressed>\n", prefix, array->elements);
  64 }
  65
  66 /* Attempts to produce a compatible layout.  Most data sets tend to be
  67  * uniform and have the same major axis as used by OpenAL Soft's HRTF model.
  68  * This will remove outliers and produce a maximally dense layout when
  69  * possible.  Those sets that contain purely random measurements or use
  70  * different major axes will fail.
  71  */
  72 void PrintCompatibleLayout(const al::span<const float> xyzs)
  73 {
  74     fputc('\n', stdout);
  75
  76     auto fds = GetCompatibleLayout(xyzs);
  77     if(fds.empty())
  78     {
  79         fputs("No compatible field layouts in SOFA file.\n", stdout);
  80         return;
  81     }
  82
  83     uint used_elems{0};
  84     for(size_t fi{0u};fi < fds.size();++fi)
  85     {
  86         for(uint ei{fds[fi].mEvStart};ei < fds[fi].mEvCount;++ei)
  87             used_elems += fds[fi].mAzCounts[ei];
  88     }
  89
  90     printf("Compatible Layout (%u of %zu measurements):\n\ndistance = %.3f", used_elems,
  91         xyzs.size()/3, fds[0].mDistance);
  92     for(size_t fi{1u};fi < fds.size();fi++)
  93         printf(", %.3f", fds[fi].mDistance);
  94
  95     fputs("\nazimuths = ", stdout);
  96     for(size_t fi{0u};fi < fds.size();++fi)
  97     {
  98         for(uint ei{0u};ei < fds[fi].mEvStart;++ei)
  99             printf("%d%s", fds[fi].mAzCounts[fds[fi].mEvCount - 1 - ei], ", ");
 100         for(uint ei{fds[fi].mEvStart};ei < fds[fi].mEvCount;++ei)
 101             printf("%d%s", fds[fi].mAzCounts[ei],
 102                 (ei < (fds[fi].mEvCount - 1)) ? ", " :
 103                 (fi < (fds.size() - 1)) ? ";\n           " : "\n");
 104     }
 105 }
 106
 107 // Load and inspect the given SOFA file.
 108 void SofaInfo(const std::string &filename)
 109 {
 110     int err;
 111     MySofaHrtfPtr sofa{mysofa_load(filename.c_str(), &err)};
 112     if(!sofa)
 113     {
 114         printf("Error: Could not load source file '%s' (%s).\n", filename.c_str(),
 115             SofaErrorStr(err));
 116         return;
 117     }
 118
 119     /* NOTE: Some valid SOFA files are failing this check. */
 120     err = mysofa_check(sofa.get());
 121     if(err != MYSOFA_OK)
 122         printf("Warning: Supposedly malformed source file '%s' (%s).\n", filename.c_str(),
 123             SofaErrorStr(err));
 124
 125     mysofa_tocartesian(sofa.get());
 126
 127     PrintSofaAttributes("Info", sofa->attributes);
 128
 129     printf("Measurements: %u\n", sofa->M);
 130     printf("Receivers: %u\n", sofa->R);
 131     printf("Emitters: %u\n", sofa->E);
 132     printf("Samples: %u\n", sofa->N);
 133
 134     PrintSofaArray("SampleRate", &sofa->DataSamplingRate);
 135     PrintSofaArray("DataDelay", &sofa->DataDelay);
 136     PrintSofaArray("SourcePosition", &sofa->SourcePosition, false);
 137
 138     PrintCompatibleLayout(al::span{sofa->SourcePosition.values, sofa->M*3_uz});
 139 }
 140
 141 int main(al::span<std::string_view> args)
 142 {
 143     if(args.size() != 2)
 144     {
 145         printf("Usage: %.*s <sofa-file>\n", al::sizei(args[0]), args[0].data());
 146         return 0;
 147     }
 148
 149     SofaInfo(std::string{args[1]});
 150
 151     return 0;
 152 }
 153
 154 } /* namespace */
 155
 156 int main(int argc, char **argv)
 157 {
 158     assert(argc >= 0);
 159     auto args = std::vector<std::string_view>(static_cast<unsigned int>(argc));
 160     std::copy_n(argv, args.size(), args.begin());
 161     return main(al::span{args});
 162 }