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livetrax/libs/ardour/sndfile_helpers.cc
2022-11-05 13:30:56 +00:00

115 lines
3.3 KiB
C++

/*
* Copyright (C) 2000-2016 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2005-2006 Taybin Rutkin <taybin@taybin.com>
* Copyright (C) 2006-2012 David Robillard <d@drobilla.net>
*
* 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; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef COMPILER_MSVC
#include <strings.h>
#endif
#include <sndfile.h>
#include "ardour/sndfile_helpers.h"
#include "ardour/export_format_base.h"
using namespace std;
int
sndfile_data_width (int format)
{
int tval = format & SF_FORMAT_SUBMASK;
switch (tval) {
case SF_FORMAT_PCM_S8:
case SF_FORMAT_PCM_U8:
return 8;
case SF_FORMAT_PCM_16:
return 16;
case SF_FORMAT_PCM_24:
return 24;
case SF_FORMAT_PCM_32:
return 32;
case SF_FORMAT_FLOAT:
case SF_FORMAT_DOUBLE:
case ARDOUR::ExportFormatBase::SF_MPEG_LAYER_III:
return 1; /* ridiculous but used as a magic value */
default:
// we don't handle anything else within ardour
return 0;
}
}
string
sndfile_major_format(int format)
{
static map<int, string> m;
if(m.empty()){
SF_FORMAT_INFO format_info;
int count;
sf_command(0, SFC_GET_FORMAT_MAJOR_COUNT, &count, sizeof (int));
for (int i = 0; i < count; ++i){
format_info.format = i;
sf_command (0, SFC_GET_FORMAT_MAJOR,
&format_info, sizeof (format_info));
m[format_info.format & SF_FORMAT_TYPEMASK] = format_info.name;
/* normalize a couple of names rather than use what libsndfile gives us */
if (strncasecmp (format_info.name, "OGG", 3) == 0) {
m[format_info.format & SF_FORMAT_TYPEMASK] = "Ogg";
} else if (strncasecmp (format_info.name, "WAV", 3) == 0) {
m[format_info.format & SF_FORMAT_TYPEMASK] = "WAV";
} else {
m[format_info.format & SF_FORMAT_TYPEMASK] = format_info.name;
}
}
}
map<int, string>::iterator p = m.find(format & SF_FORMAT_TYPEMASK);
if(p != m.end()){
return m[format & SF_FORMAT_TYPEMASK];
} else {
return "-Unknown-";
}
}
string
sndfile_minor_format(int format)
{
static map<int, string> m;
if(m.empty()){
SF_FORMAT_INFO format_info;
int count;
sf_command(0, SFC_GET_FORMAT_SUBTYPE_COUNT, &count, sizeof (int));
for (int i = 0; i < count; ++i){
format_info.format = i;
sf_command (0, SFC_GET_FORMAT_SUBTYPE,
&format_info, sizeof (format_info));
m[format_info.format & SF_FORMAT_SUBMASK] = format_info.name;
}
}
map<int, string>::iterator p = m.find(format & SF_FORMAT_SUBMASK);
if(p != m.end()){
return m[format & SF_FORMAT_SUBMASK];
} else {
return "-Unknown-";
}
}