79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
/*
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* Copyright (C) 2019 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "pbd/error.h"
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#include "pbd/compose.h"
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#include "ardour/mp3filesource.h"
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#include "pbd/i18n.h"
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using namespace std;
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using namespace ARDOUR;
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using namespace PBD;
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/** Constructor to be called for existing external-to-session files
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* Sources created with this method are never writable or removable.
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*/
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Mp3FileSource::Mp3FileSource (Session& s, const string& path, int chn, Flag flags)
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: Source (s, DataType::AUDIO, path,
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Source::Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy)))
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, AudioFileSource (s, path,
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Source::Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy)))
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, _mp3 (path)
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, _channel (chn)
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{
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_length = timecnt_t (_mp3.length ());
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if (_channel >= (int) _mp3.channels ()) {
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error << string_compose("Mp3FileSource: file only contains %1 channels; %2 is invalid as a channel number (%3)", _mp3.channels (), _channel, name()) << endmsg;
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throw failed_constructor();
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}
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}
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Mp3FileSource::~Mp3FileSource ()
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{
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}
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void
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Mp3FileSource::close ()
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{
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}
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samplecnt_t
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Mp3FileSource::read_unlocked (Sample* dst, samplepos_t start, samplecnt_t cnt) const
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{
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return _mp3.read_unlocked (dst, start, cnt, _channel);
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}
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int
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Mp3FileSource::get_soundfile_info (string path, SoundFileInfo& _info, string& error_msg)
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{
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try {
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Mp3FileImportableSource mp3 (path);
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_info.samplerate = mp3.samplerate ();
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_info.channels = mp3.channels ();
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_info.length = mp3.length ();
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_info.format_name = string_compose (_("MPEG Layer %1 (%2 kbps)"), mp3.layer (), mp3.bitrate ());
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_info.timecode = 0;
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_info.seekable = false;
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return 0;
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} catch (...) {}
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return -1;
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}
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