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/***************************************************************************
* Copyright (C) 2008-2009 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 <QIODevice>
#include <QFile>
#include <math.h>
#include <stdint.h>
#include <qmmp/buffer.h>
#include <qmmp/output.h>
#include <qmmp/recycler.h>
#include "QtDebug"
#include "decoder_wavpack.h"
#include "cueparser.h"
// Decoder class
DecoderWavPack::DecoderWavPack(QObject *parent, DecoderFactory *d, Output *o, const QString &path)
: Decoder(parent, d, o)
{
m_path = path;
m_totalTime = 0.0;
m_chan = 0;
m_context = 0;
m_freq = 0;
m_cue_parser = 0;
m_output_buf = 0;
}
DecoderWavPack::~DecoderWavPack()
{
deinit();
if (m_output_buf)
delete [] m_output_buf;
m_output_buf = 0;
}
bool DecoderWavPack::initialize()
{
m_chan = 0;
m_totalTime = 0;
char err [80];
if (m_path.startsWith("wvpack://")) //embeded cue track
{
QString p = QUrl(m_path).path();
p.replace(QString(QUrl::toPercentEncoding("#")), "#");
p.replace(QString(QUrl::toPercentEncoding("%")), "%");
m_context = WavpackOpenFileInput (p.toLocal8Bit(), err, OPEN_WVC | OPEN_TAGS, 0);
int cue_len = WavpackGetTagItem (m_context, "cuesheet", NULL, 0);
char *value;
if (cue_len)
{
value = (char*)malloc (cue_len * 2 + 1);
WavpackGetTagItem (m_context, "cuesheet", value, cue_len + 1);
m_cue_parser = new CUEParser(value, p);
int track = m_path.section("#", -1).toInt();
if(track > m_cue_parser->count())
{
qWarning("DecoderWavPack: invalid cuesheet comment");
return FALSE;
}
m_path = p;
//send metadata
QMap<Qmmp::MetaData, QString> metaData = m_cue_parser->info(track)->metaData();
StateHandler::instance()->dispatch(metaData);
connect(stateHandler(),SIGNAL(aboutToFinish()),SLOT(processFinish()));
//next url
m_nextUrl.clear();
if(track <= m_cue_parser->count() - 1)
m_nextUrl = m_cue_parser->info(track + 1)->path();
m_totalTime = m_cue_parser->length(track);
setFragment(m_cue_parser->offset(track), m_cue_parser->length(track));
}
}
else
m_context = WavpackOpenFileInput (m_path.toLocal8Bit(), err, OPEN_WVC | OPEN_TAGS, 0);
if (!m_context)
{
qWarning("DecoderWavPack: error: %s", err);
return FALSE;
}
m_chan = WavpackGetNumChannels(m_context);
m_freq = WavpackGetSampleRate (m_context);
int bps = WavpackGetBitsPerSample (m_context);
if (!m_output_buf)
m_output_buf = new int32_t[Qmmp::globalBufferSize()/4];
configure(m_freq, m_chan, bps);
if(!m_cue_parser)
m_totalTime = (qint64) WavpackGetNumSamples(m_context) * 1000 / m_freq;
qDebug("DecoderWavPack: initialize succes");
return TRUE;
}
int DecoderWavPack::bitrate()
{
if(m_context)
return int(WavpackGetInstantBitrate(m_context)/1000);
return 0;
}
qint64 DecoderWavPack::totalTime()
{
return m_totalTime;
}
void DecoderWavPack::deinit()
{
m_chan = 0;
m_freq = 0;
if (m_context)
WavpackCloseFile (m_context);
m_context = 0;
if(m_cue_parser)
delete m_cue_parser;
m_cue_parser = 0;
}
void DecoderWavPack::seekAudio(qint64 time)
{
WavpackSeekSample (m_context, time * m_freq / 1000);
}
qint64 DecoderWavPack::readAudio(char *data, qint64 maxSize)
{
ulong len = WavpackUnpackSamples (m_context, m_output_buf, maxSize / m_chan / 4);
uint m = 0;
//convert 32 to 16
for (uint i = 0; i < len * m_chan; ++i)
{
data[m++] = (m_output_buf[i] >> 0) & 0xff;
data[m++] = (m_output_buf[i] >> 8) & 0xff;
}
return len * m_chan * 2;
}
void DecoderWavPack::processFinish()
{
if(m_cue_parser && nextUrlRequest(m_nextUrl))
{
qDebug("DecoderFLAC: going to next track");
int track = m_nextUrl.section("#", -1).toInt();
QString p = QUrl(m_nextUrl).path();
p.replace(QString(QUrl::toPercentEncoding("#")), "#");
p.replace(QString(QUrl::toPercentEncoding("%")), "%");
//update current fragment
mutex()->lock();
setFragment(m_cue_parser->offset(track), m_cue_parser->length(track));
m_totalTime = m_cue_parser->length(track);
output()->seek(0); //reset time counter
mutex()->unlock();
// find next track
m_nextUrl.clear();
if(track <= m_cue_parser->count() - 1)
m_nextUrl = m_cue_parser->info(track + 1)->path();
//change track
emit playbackFinished();
//send metadata
QMap<Qmmp::MetaData, QString> metaData = m_cue_parser->info(track)->metaData();
stateHandler()->dispatch(metaData);
}
}
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