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// sndfile helper functions
//
// Copyright (c) 2002 James McCartney. All rights reserved.
// Copyright (C) 2012 Tim Blechmann
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; see the file COPYING. If not, write to
// the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.

#ifndef SC_SNDFILEHELPERS_HPP_INCLUDED
#define SC_SNDFILEHELPERS_HPP_INCLUDED

#include "SC_Errors.h"

#ifndef NO_LIBSNDFILE
#include "sndfile.h"
#include "string.h"
#include "SC_DirUtils.h"

static inline int headerFormatFromString(const char *name)
{
if (!name) return SF_FORMAT_AIFF;
if (stringCaseCompare(name, "AIFF")) return SF_FORMAT_AIFF;
if (stringCaseCompare(name, "AIFC")) return SF_FORMAT_AIFF;
if (stringCaseCompare(name, "RIFF")) return SF_FORMAT_WAV;
if (stringCaseCompare(name, "WAVEX")) return SF_FORMAT_WAVEX;
if (stringCaseCompare(name, "WAVE")) return SF_FORMAT_WAV;
if (stringCaseCompare(name, "WAV" )) return SF_FORMAT_WAV;
if (stringCaseCompare(name, "Sun" )) return SF_FORMAT_AU;
if (stringCaseCompare(name, "IRCAM")) return SF_FORMAT_IRCAM;
if (stringCaseCompare(name, "NeXT")) return SF_FORMAT_AU;
if (stringCaseCompare(name, "raw")) return SF_FORMAT_RAW;
if (stringCaseCompare(name, "MAT4")) return SF_FORMAT_MAT4;
if (stringCaseCompare(name, "MAT5")) return SF_FORMAT_MAT5;
if (stringCaseCompare(name, "PAF")) return SF_FORMAT_PAF;
if (stringCaseCompare(name, "SVX")) return SF_FORMAT_SVX;
if (stringCaseCompare(name, "NIST")) return SF_FORMAT_NIST;
if (stringCaseCompare(name, "VOC")) return SF_FORMAT_VOC;
if (stringCaseCompare(name, "W64")) return SF_FORMAT_W64;
if (stringCaseCompare(name, "PVF")) return SF_FORMAT_PVF;
if (stringCaseCompare(name, "XI")) return SF_FORMAT_XI;
if (stringCaseCompare(name, "HTK")) return SF_FORMAT_HTK;
if (stringCaseCompare(name, "SDS")) return SF_FORMAT_SDS;
if (stringCaseCompare(name, "AVR")) return SF_FORMAT_AVR;
if (stringCaseCompare(name, "SD2")) return SF_FORMAT_SD2;
if (stringCaseCompare(name, "FLAC")) return SF_FORMAT_FLAC;
// TODO allow other platforms to know vorbis once libsndfile 1.0.18 is established
#if defined(__APPLE__) || defined(_WIN32) || LIBSNDFILE_1018
if (stringCaseCompare(name, "vorbis")) return SF_FORMAT_VORBIS;
#endif
if (stringCaseCompare(name, "CAF")) return SF_FORMAT_CAF;
if (stringCaseCompare(name, "RF64")) return SF_FORMAT_RF64;
return 0;
}

static inline int sampleFormatFromString(const char* name)
{
if (!name) return SF_FORMAT_PCM_16;

size_t len = strlen(name);
if (len < 1) return 0;

if (name[0] == 'u') {
if (len < 5) return 0;
if (name[4] == '8') return SF_FORMAT_PCM_U8; // uint8
return 0;
} else if (name[0] == 'i') {
if (len < 4) return 0;
if (name[3] == '8') return SF_FORMAT_PCM_S8; // int8
else if (name[3] == '1') return SF_FORMAT_PCM_16; // int16
else if (name[3] == '2') return SF_FORMAT_PCM_24; // int24
else if (name[3] == '3') return SF_FORMAT_PCM_32; // int32
} else if (name[0] == 'f') {
return SF_FORMAT_FLOAT; // float
} else if (name[0] == 'd') {
return SF_FORMAT_DOUBLE; // double
} else if (name[0] == 'm' || name[0] == 'u') {
return SF_FORMAT_ULAW; // mulaw ulaw
} else if (name[0] == 'a') {
return SF_FORMAT_ALAW; // alaw
}
return 0;
}

static inline int sndfileFormatInfoFromStrings(struct SF_INFO *info, const char *headerFormatString, const char *sampleFormatString)
{
int headerFormat = headerFormatFromString(headerFormatString);
if (!headerFormat) return kSCErr_Failed;

int sampleFormat = sampleFormatFromString(sampleFormatString);
if (!sampleFormat) return kSCErr_Failed;

info->format = (unsigned int)(headerFormat | sampleFormat);
return kSCErr_None;
}

#else

static inline int sndfileFormatInfoFromStrings(struct SF_INFO *info, const char *headerFormatString, const char *sampleFormatString)
{
return kSCErr_Failed;
}

#endif

#endif /* SC_SNDFILEHELPERS_HPP_INCLUDED */
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