common/SC_SndFileHelpers.hpp

   1 //  sndfile helper functions
   2 //
   3 //  Copyright (c) 2002 James McCartney. All rights reserved.
   4 //  Copyright (C) 2012 Tim Blechmann
   5 //
   6 //  This program is free software; you can redistribute it and/or modify
   7 //  it under the terms of the GNU General Public License as published by
   8 //  the Free Software Foundation; either version 2 of the License, or
   9 //  (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; see the file COPYING.  If not, write to
  18 //  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 //  Boston, MA 02111-1307, USA.
  20
  21 #ifndef SC_SNDFILEHELPERS_HPP_INCLUDED
  22 #define SC_SNDFILEHELPERS_HPP_INCLUDED
  23
  24 #include "SC_Errors.h"
  25
  26 #ifndef NO_LIBSNDFILE
  27 #include "sndfile.h"
  28 #include "string.h"
  29 #include "SC_DirUtils.h"
  30
  31 static inline int headerFormatFromString(const char *name)
  32 {
  33         if (!name) return SF_FORMAT_AIFF;
  34         if (stringCaseCompare(name, "AIFF"))  return SF_FORMAT_AIFF;
  35         if (stringCaseCompare(name, "AIFC"))  return SF_FORMAT_AIFF;
  36         if (stringCaseCompare(name, "RIFF"))  return SF_FORMAT_WAV;
  37         if (stringCaseCompare(name, "WAVEX")) return SF_FORMAT_WAVEX;
  38         if (stringCaseCompare(name, "WAVE"))  return SF_FORMAT_WAV;
  39         if (stringCaseCompare(name, "WAV" ))  return SF_FORMAT_WAV;
  40         if (stringCaseCompare(name, "Sun" ))  return SF_FORMAT_AU;
  41         if (stringCaseCompare(name, "IRCAM")) return SF_FORMAT_IRCAM;
  42         if (stringCaseCompare(name, "NeXT"))  return SF_FORMAT_AU;
  43         if (stringCaseCompare(name, "raw"))   return SF_FORMAT_RAW;
  44         if (stringCaseCompare(name, "MAT4"))  return SF_FORMAT_MAT4;
  45         if (stringCaseCompare(name, "MAT5"))  return SF_FORMAT_MAT5;
  46         if (stringCaseCompare(name, "PAF"))   return SF_FORMAT_PAF;
  47         if (stringCaseCompare(name, "SVX"))   return SF_FORMAT_SVX;
  48         if (stringCaseCompare(name, "NIST"))  return SF_FORMAT_NIST;
  49         if (stringCaseCompare(name, "VOC"))   return SF_FORMAT_VOC;
  50         if (stringCaseCompare(name, "W64"))   return SF_FORMAT_W64;
  51         if (stringCaseCompare(name, "PVF"))   return SF_FORMAT_PVF;
  52         if (stringCaseCompare(name, "XI"))    return SF_FORMAT_XI;
  53         if (stringCaseCompare(name, "HTK"))   return SF_FORMAT_HTK;
  54         if (stringCaseCompare(name, "SDS"))   return SF_FORMAT_SDS;
  55         if (stringCaseCompare(name, "AVR"))   return SF_FORMAT_AVR;
  56         if (stringCaseCompare(name, "SD2"))   return SF_FORMAT_SD2;
  57         if (stringCaseCompare(name, "FLAC"))  return SF_FORMAT_FLAC;
  58         // TODO allow other platforms to know vorbis once libsndfile 1.0.18 is established
  59         #if defined(__APPLE__) || defined(_WIN32) || LIBSNDFILE_1018
  60         if (stringCaseCompare(name, "vorbis")) return SF_FORMAT_VORBIS;
  61         #endif
  62         if (stringCaseCompare(name, "CAF"))   return SF_FORMAT_CAF;
  63         if (stringCaseCompare(name, "RF64"))  return SF_FORMAT_RF64;
  64         return 0;
  65 }
  66
  67 static inline int sampleFormatFromString(const char* name)
  68 {
  69         if (!name) return SF_FORMAT_PCM_16;
  70
  71         size_t len = strlen(name);
  72         if (len < 1) return 0;
  73
  74         if (name[0] == 'u') {
  75                 if (len < 5) return 0;
  76                 if (name[4] == '8') return SF_FORMAT_PCM_U8; // uint8
  77                 return 0;
  78         } else if (name[0] == 'i') {
  79                 if (len < 4) return 0;
  80                 if (name[3] == '8') return SF_FORMAT_PCM_S8;      // int8
  81                 else if (name[3] == '1') return SF_FORMAT_PCM_16; // int16
  82                 else if (name[3] == '2') return SF_FORMAT_PCM_24; // int24
  83                 else if (name[3] == '3') return SF_FORMAT_PCM_32; // int32
  84         } else if (name[0] == 'f') {
  85                 return SF_FORMAT_FLOAT; // float
  86         } else if (name[0] == 'd') {
  87                 return SF_FORMAT_DOUBLE; // double
  88         } else if (name[0] == 'm' || name[0] == 'u') {
  89                 return SF_FORMAT_ULAW; // mulaw ulaw
  90         } else if (name[0] == 'a') {
  91                 return SF_FORMAT_ALAW; // alaw
  92         }
  93         return 0;
  94 }
  95
  96 static inline int sndfileFormatInfoFromStrings(struct SF_INFO *info, const char *headerFormatString, const char *sampleFormatString)
  97 {
  98         int headerFormat = headerFormatFromString(headerFormatString);
  99         if (!headerFormat) return kSCErr_Failed;
 100
 101         int sampleFormat = sampleFormatFromString(sampleFormatString);
 102         if (!sampleFormat) return kSCErr_Failed;
 103
 104         info->format = (unsigned int)(headerFormat | sampleFormat);
 105         return kSCErr_None;
 106 }
 107
 108 #else
 109
 110 static inline int sndfileFormatInfoFromStrings(struct SF_INFO *info, const char *headerFormatString, const char *sampleFormatString)
 111 {
 112         return kSCErr_Failed;
 113 }
 114
 115 #endif
 116
 117 #endif /* SC_SNDFILEHELPERS_HPP_INCLUDED */