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/***************************************************************************
* Copyright (C) 2008-2012 by Ilya Kotov *
* forkotov02@hotmail.ru *
* *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <QObject>
#include <QFile>
#include <qmmp/buffer.h>
#include <qmmp/output.h>
#include <qmmp/recycler.h>
#include <qmmp/fileinfo.h>
#include <qmmp/decoderfactory.h>
#include <qmmp/soundcore.h>
#include "cueparser.h"
#include "decoder_cue.h"
DecoderCUE::DecoderCUE(const QString &url)
: Decoder()
{
m_path = url;
m_decoder = 0;
m_parser = 0;
m_track = 0;
m_buf = 0;
m_input = 0;
}
DecoderCUE::~DecoderCUE()
{
if(m_decoder)
delete m_decoder;
m_decoder = 0;
if(m_parser)
delete m_parser;
m_parser = 0;
if(m_buf)
delete [] m_buf;
m_buf = 0;
if(m_input)
m_input->deleteLater();
m_input = 0;
}
bool DecoderCUE::initialize()
{
m_parser = new CUEParser(m_path);
if (m_parser->count() == 0)
{
qWarning("DecoderCUE: invalid cue file");
return false;
}
m_track = m_path.section("#", -1).toInt();
m_path = m_parser->filePath(m_track);
if (!QFile::exists(m_path))
{
qWarning("DecoderCUE: file \"%s\" doesn't exist", qPrintable(m_path));
return false;
}
DecoderFactory *df = Decoder::findByPath(m_path);
if (!df)
{
qWarning("DecoderCUE: unsupported file format");
return false;
}
m_length = m_parser->length(m_track);
m_offset = m_parser->offset(m_track);
if(!df->properties().noInput)
{
m_input = new QFile(m_path);
if(!m_input->open(QIODevice::ReadOnly))
{
qWarning("DecoderCUE: error: %s", qPrintable(m_input->errorString()));
return false;
}
}
m_decoder = df->create(m_path, m_input);
if(!m_decoder->initialize())
{
qWarning("DecoderCUE: invalid audio file");
return false;
}
m_decoder->seek(m_offset);
configure(m_decoder->audioParameters().sampleRate(),
m_decoder->audioParameters().channels(),
m_decoder->audioParameters().format());
setReplayGainInfo(m_parser->replayGain(m_track));
length_in_bytes = audioParameters().sampleRate() *
audioParameters().channels() *
audioParameters().sampleSize() * m_length/1000;
m_totalBytes = 0;
m_sz = audioParameters().sampleSize() * audioParameters().channels();
addMetaData(m_parser->info(m_track)->metaData());
return true;
}
qint64 DecoderCUE::totalTime()
{
return m_decoder ? m_length : 0;
}
void DecoderCUE::seek(qint64 pos)
{
m_decoder->seek(m_offset + pos);
m_totalBytes = audioParameters().sampleRate() *
audioParameters().channels() *
audioParameters().sampleSize() * pos/1000;
}
qint64 DecoderCUE::read(char *data, qint64 size)
{
if(length_in_bytes - m_totalBytes < m_sz) //end of cue track
return 0;
qint64 len = 0;
if(m_buf) //read remaining data first
{
len = qMin(m_buf_size, size);
memmove(data, m_buf, len);
if(size >= m_buf_size)
{
delete[] m_buf;
m_buf = 0;
m_buf_size = 0;
}
else
memmove(m_buf, m_buf + len, size - len);
}
else
len = m_decoder->read(data, size);
if(len <= 0) //end of file
return 0;
if(len + m_totalBytes <= length_in_bytes)
{
m_totalBytes += len;
return len;
}
qint64 len2 = qMax(qint64(0), length_in_bytes - m_totalBytes);
len2 = (len2 / m_sz) * m_sz; //whole of samples of each channel
m_totalBytes += len2;
//save data of the next track
if(m_buf)
delete[] m_buf;
m_buf_size = len - len2;
m_buf = new char[m_buf_size];
memmove(m_buf, data + len2, m_buf_size);
return len2;
}
int DecoderCUE::bitrate()
{
return m_decoder->bitrate();
}
const QString DecoderCUE::nextURL()
{
if(m_track +1 <= m_parser->count() && m_parser->filePath(m_track) == m_parser->filePath(m_track + 1))
return m_parser->trackURL(m_track + 1);
else
return QString();
}
void DecoderCUE::next()
{
if(m_track +1 <= m_parser->count())
{
m_track++;
m_length = m_parser->length(m_track);
m_offset = m_parser->offset(m_track);
length_in_bytes = audioParameters().sampleRate() *
audioParameters().channels() *
audioParameters().sampleSize() * m_length/1000;
addMetaData(m_parser->info(m_track)->metaData());
setReplayGainInfo(m_parser->replayGain(m_track));
m_totalBytes = 0;
}
}
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