/***************************************************************************
* Copyright (C) 2017 by Ilya Kotov *
* forkotov02@ya.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., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <QSettings>
#include <QStandardPaths>
#include <time.h>
#include <qmmp/soundcore.h>
#include <qmmpui/metadataformatter.h>
#include "filewriterplugin.h"
FileWriterPlugin::FileWriterPlugin()
{
qsrand(time(NULL));
m_inited = false;
}
FileWriterPlugin::~FileWriterPlugin()
{
deinit();
}
void FileWriterPlugin::configure(quint32 srate, ChannelMap map)
{
Effect::configure(srate, map);
if(SoundCore::instance()->state() == Qmmp::Playing || SoundCore::instance()->state() == Qmmp::Paused)
init(SoundCore::instance()->metaData());
}
void FileWriterPlugin::applyEffect(Buffer *b)
{
if(!b->metaData.isNull())
init(*b->metaData);
if(!m_inited || !b->samples)
return;
int frames = b->samples / channels();
float **buffer = vorbis_analysis_buffer(&m_vd, frames);
for(int i = 0; i < frames; i++)
{
for(int c = 0; c < channels(); ++c)
buffer[c][i] = b->data[i * channels() + c];
}
vorbis_analysis_wrote(&m_vd, frames);
bool ok = true;
while(ok && vorbis_analysis_blockout(&m_vd, &m_vb) == 1)
{
// analysis, assume we want to use bitrate management
vorbis_analysis(&m_vb, NULL);
vorbis_bitrate_addblock(&m_vb);
while(ok && vorbis_bitrate_flushpacket(&m_vd, &m_op))
{
// weld the packet into the bitstream
ogg_stream_packetin(&m_os, &m_op);
// write out pages (if any)
bool eos = false;
while(!eos)
{
if(ogg_stream_pageout(&m_os, &m_og))
{
if(m_file.write((char*)m_og.header, m_og.header_len) != m_og.header_len)
{
ok = false;
break;
}
if(m_file.write((char*)m_og.body, m_og.body_len) != m_og.body_len)
{
ok = false;
break;
}
eos = (ogg_page_eos(&m_og) != 0);
}
else
{
eos = true;
}
}
}
}
if(!ok)
{
qWarning("FileWriterPlugin: unable to write file: output disabled");
deinit();
}
}
void FileWriterPlugin::init(const QMap<Qmmp::MetaData, QString> &metaData)
{
deinit();
QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
float quality = settings.value("FileWriter/vorbis_quality", 0.8).toFloat();
QString outDir = QStandardPaths::writableLocation(QStandardPaths::MusicLocation);
outDir = settings.value("FileWriter/out_dir", outDir).toString();
QString fileName = settings.value("FileWriter/file_name", "%p%if(%p&%t, - ,)%t").toString();
if(fileName.isEmpty())
fileName = metaData[Qmmp::URL].section("/", 1);
MetaDataFormatter formatter(fileName);
fileName = formatter.format(metaData, SoundCore::instance()->totalTime() / 1000);
if(!fileName.endsWith(".ogg", Qt::CaseInsensitive))
fileName.append(".ogg");
m_file.setFileName(outDir + "/" + fileName);
int j = 1;
while(m_file.exists())
{
m_file.setFileName(outDir + "/" + fileName.left(fileName.count() - 4) +
QString("-%1.ogg").arg(j++));
}
qDebug("FileWriterPlugin: writing file '%s'", qPrintable(m_file.fileName()));
if(!m_file.open(QIODevice::WriteOnly))
{
qWarning("FileWriterPlugin: unable to create output file, error: %s",
qPrintable(m_file.errorString()));
return;
}
vorbis_info_init(&m_vi);
vorbis_encode_init_vbr(&m_vi, channels(), sampleRate(), quality);
vorbis_comment_init(&m_vc);
vorbis_analysis_init(&m_vd, &m_vi);
vorbis_block_init(&m_vd,&m_vb);
ogg_stream_init(&m_os,qrand());
vorbis_comment_clear(&m_vc);
static const struct
{
Qmmp::MetaData key;
const char *tag;
} tag_map[] = {
{ Qmmp::TITLE, "title"},
{ Qmmp::ARTIST, "artist"},
{ Qmmp::ALBUM, "album"},
{ Qmmp::COMMENT, "comment"},
{ Qmmp::GENRE, "genre"},
{ Qmmp::TRACK, "tracknumber"},
{ Qmmp::YEAR, "date"},
{ Qmmp::COMPOSER, "composer"},
{ Qmmp::DISCNUMBER, "discnumber"},
{ Qmmp::UNKNOWN, 0}
};
int i = 0;
while(tag_map[i].key != Qmmp::UNKNOWN)
{
if(!metaData[tag_map[i].key].isEmpty())
vorbis_comment_add_tag(&m_vc, tag_map[i].tag, metaData.value(tag_map[i].key).toUtf8().constData());
i++;
}
sendHeader();
m_inited = true;
}
void FileWriterPlugin::deinit()
{
if(m_inited)
{
ogg_stream_clear(&m_os);
vorbis_block_clear(&m_vb);
vorbis_dsp_clear(&m_vd);
vorbis_comment_clear(&m_vc);
vorbis_info_clear(&m_vi);
m_file.close();
m_inited = false;
}
}
void FileWriterPlugin::sendHeader()
{
ogg_packet header;
ogg_packet header_comm;
ogg_packet header_code;
vorbis_analysis_headerout(&m_vd, &m_vc, &header, &header_comm, &header_code);
ogg_stream_packetin(&m_os, &header); // automatically placed in its own page
ogg_stream_packetin(&m_os, &header_comm);
ogg_stream_packetin(&m_os, &header_code);
}
