78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
/*
|
|
* Copyright (C) 2019 Robin Gareus <robin@gareus.org>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include "pbd/error.h"
|
|
#include "pbd/compose.h"
|
|
#include "ardour/mp3filesource.h"
|
|
|
|
#include "pbd/i18n.h"
|
|
|
|
using namespace ARDOUR;
|
|
using namespace PBD;
|
|
|
|
/** Constructor to be called for existing external-to-session files
|
|
* Sources created with this method are never writable or removable.
|
|
*/
|
|
|
|
Mp3FileSource::Mp3FileSource (Session& s, const string& path, int chn, Flag flags)
|
|
: Source (s, DataType::AUDIO, path,
|
|
Source::Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy)))
|
|
, AudioFileSource (s, path,
|
|
Source::Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy)))
|
|
, _mp3 (path)
|
|
, _channel (chn)
|
|
{
|
|
_length = _mp3.length ();
|
|
|
|
if (_channel >= (int) _mp3.channels ()) {
|
|
error << string_compose("Mp3FileSource: file only contains %1 channels; %2 is invalid as a channel number (%3)", _mp3.channels (), _channel, name()) << endmsg;
|
|
throw failed_constructor();
|
|
}
|
|
}
|
|
|
|
Mp3FileSource::~Mp3FileSource ()
|
|
{
|
|
}
|
|
|
|
void
|
|
Mp3FileSource::close ()
|
|
{
|
|
}
|
|
|
|
samplecnt_t
|
|
Mp3FileSource::read_unlocked (Sample* dst, samplepos_t start, samplecnt_t cnt) const
|
|
{
|
|
return _mp3.read_unlocked (dst, start, cnt, _channel);
|
|
}
|
|
|
|
int
|
|
Mp3FileSource::get_soundfile_info (string path, SoundFileInfo& _info, string& error_msg)
|
|
{
|
|
try {
|
|
Mp3FileImportableSource mp3 (path);
|
|
_info.samplerate = mp3.samplerate ();
|
|
_info.channels = mp3.channels ();
|
|
_info.length = mp3.length ();
|
|
_info.format_name = string_compose (_("MPEG Layer %1 (%2 kbps)"), mp3.layer (), mp3.bitrate ());
|
|
_info.timecode = 0;
|
|
_info.seekable = false;
|
|
return 0;
|
|
} catch (...) {}
|
|
return -1;
|
|
}
|