src/plugins/Input/mad/decodermadfactory.cpp



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/***************************************************************************
 *   Copyright (C) 2008-2015 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.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
 ***************************************************************************/

#include <QtGui>
#include <QDialog>
#include <QMessageBox>
#include <QFile>
#include <mad.h>
#include <taglib/tag.h>
#include <taglib/fileref.h>
#include <taglib/id3v1tag.h>
#include <taglib/id3v2tag.h>
#include <taglib/apetag.h>
#include <taglib/tfile.h>
#include <taglib/mpegfile.h>
#if (TAGLIB_MAJOR_VERSION > 1) || ((TAGLIB_MAJOR_VERSION == 1) && (TAGLIB_MINOR_VERSION >= 8))
#include <taglib/tfilestream.h>
#endif
#include "mpegmetadatamodel.h"
#include "replaygainreader.h"
#include "settingsdialog.h"
#include "decoder_mad.h"
#include "decodermadfactory.h"

// DecoderMADFactory

DecoderMADFactory::DecoderMADFactory()
{
    //detecting rusxmms patch
    m_using_rusxmms = false;
    char str[] = { char(0xF2), char(0xE5), char(0xF1), char(0xF2), '\0'};
    QTextCodec *codec = QTextCodec::codecForName ("windows-1251");
    TagLib::String tstr(str);
    if(codec->toUnicode(str) == QString::fromUtf8(tstr.toCString(true)))
    {
        qDebug("DecoderMADFactory: found taglib with rusxmms patch");
        m_using_rusxmms = true;
    }
}

bool DecoderMADFactory::supports(const QString &source) const
{
    QString ext = source.right(4).toLower();
    if (ext == ".mp1" || ext == ".mp2" || ext == ".mp3")
        return true;
    else if (ext == ".wav") //check for mp3 wav files
    {
        QFile file(source);
        file.open(QIODevice::ReadOnly);
        char buf[22];
        file.peek(buf,sizeof(buf));
        file.close();
        if (!memcmp(buf + 8, "WAVE", 4) && !memcmp(buf + 20, "U" ,1))
        {
            return true;
        }
    }
    return false;
}

bool DecoderMADFactory::canDecode(QIODevice *input) const
{
    char buf[16 * 512];

    if (input->peek(buf,sizeof(buf)) == sizeof(buf))
    {
        struct mad_stream stream;
        struct mad_header header;
        int dec_res;

        mad_stream_init (&stream);
        mad_header_init (&header);
        mad_stream_buffer (&stream, (unsigned char *) buf, sizeof(buf));
        stream.error = MAD_ERROR_NONE;

        while ((dec_res = mad_header_decode(&header, &stream)) == -1
                && MAD_RECOVERABLE(stream.error))
            ;
        return dec_res != -1 ? true: false;
    }
    return false;
}

const DecoderProperties DecoderMADFactory::properties() const
{
    DecoderProperties properties;
    properties.name = tr("MPEG Plugin");
    properties.shortName = "mad";
    properties.filters << "*.mp1" << "*.mp2" << "*.mp3" << "*.wav";
    properties.description = tr("MPEG Files");
    properties.contentTypes << "audio/mp3" << "audio/mpeg";
    properties.hasAbout = true;
    properties.hasSettings = true;
    return properties;
}

Decoder *DecoderMADFactory::create(const QString &url, QIODevice *input)
{
    Decoder *d = new DecoderMAD(input);
    if(!url.contains("://")) //local file
    {
        ReplayGainReader rg(url);
        d->setReplayGainInfo(rg.replayGainInfo(), true);
    }
    return d;
}

QList<FileInfo *> DecoderMADFactory::createPlayList(const QString &fileName, bool useMetaData, QStringList *)
{