qmmpg123page.cpp

可以播放MP3,wma等文件格式的播放器

/* qmmpg123page.cpp
 *
 * $Id: qmmpg123page.cpp,v 1.19 2002/03/17 15:34:30 kyllingstad Exp $
 *
 * Apollo sound player: http://www.apolloplayer.org
 * Copyright(C) 2000-2002 Apollo Team.  See CREDITS file.
 *
 * 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.
 *
 * The GNU General Public License is also available online at:
 *
 * http://www.gnu.org/copyleft/gpl.html
 */

#include "qmmpg123page.h"
#include "qmconfig.h"
#include "qmconfigpage.h"

#include <iostream>

#include <qbuttongroup.h>
#include <qfiledialog.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qlineedit.h>
#include <qpushbutton.h>
#include <qradiobutton.h>
#include <qslider.h>
#include <qvgroupbox.h>
#include <qcheckbox.h>

/**
 * @file qmmpg123page.cpp
 * @brief The preferences page for mpg123.
*/

/*!
  \class QmMpg123Page qmmpg123page.h
  \brief The preferences page for mpg123.

  \todo Make a common config page interface into a base class.  Deal with 'Cancel',
  'Apply', 'Okay', 'Reset' etc.
*/


/*!
  Initializes the page.
*/

QmMpg123Page::QmMpg123Page(
	QmConfigDialog *parent,
	const char *name)
	: QmConfigPage(parent, name)
{
	QmConfig *conf = QmConfig::instance();
	QVBoxLayout *main = new QVBoxLayout(this, 4);

	// The labels use <table> ... to make the contents resizable.

	QVGroupBox *filegroup = new QVGroupBox(tr("Path"), this);
	(void) new QLabel(tr("<table><tr><td>"
						 "Enter the full path to mpg123 below.  "
						 "Apollo uses mpg123 to play MP3 files."
						 "</td></tr></table>"),
					  filegroup);
	m_pPath	= new QLineEdit(conf->getString( "mpg123", "path" ), filegroup);
	connect(m_pPath, SIGNAL(textChanged(const QString&)), this, SLOT(changed())); 

	QPushButton *browse = new QPushButton(tr("Browse"), filegroup);
	connect(browse, SIGNAL(clicked()), this, SLOT(browse()));

//	m_pUseArtsdsp = new QCheckBox(tr("<table><tr><td>"
	(void) new QLabel(tr("<table><tr><td>"	
						 "Path to artsdsp, leave blank if you don't use it.  "
						 "It's needed when artsd is used.  If you don't know, "
						 "check with `ps | grep artsd' on the command line."
						 "</td></tr></table>"), filegroup);

	m_pArtsdspPath = new QLineEdit(conf->getString( "mpg123", "artsdsp" ), filegroup);
	connect(m_pArtsdspPath, SIGNAL(textChanged(const QString&)), this, SLOT(changed()));		
	QPushButton *browseArtsdsp = new QPushButton(tr("Browse"), filegroup);
	connect(browseArtsdsp, SIGNAL(clicked()), this, SLOT(browseArtsdp()));

	main->addWidget(filegroup);

    QHBoxLayout *sub1 = new QHBoxLayout(4);
    main->addLayout( sub1, 0 );
    {
//          QButtonGroup *res = new QButtonGroup(2, Qt::Vertical,
//                                               tr("Resolution"),this);
//          QRadioButton *bits_sixteen = new QRadioButton(tr("16 bit"), res, "16Bit");
//          QRadioButton *bits_eight = new QRadioButton(tr("8 bit"), res, "8Bit");

        m_pChannelGroup = new QButtonGroup(2, Qt::Vertical,
                                              tr("Channels"),this);
		connect(m_pChannelGroup, SIGNAL(clicked(int)), this, SLOT(changed()));
        (void) new QRadioButton(tr("Stereo (if available)"), m_pChannelGroup, "Stereo");
        (void) new QRadioButton(tr("Mono"), m_pChannelGroup, "Mono");

        m_pDownSampleGroup = new QButtonGroup(3, Qt::Vertical,
                                              tr("Down sample"),this);
		connect(m_pDownSampleGroup, SIGNAL(clicked(int)), this, SLOT(changed()));
        (void) new QRadioButton(tr("1:1 (44 kHz)"), m_pDownSampleGroup, "1:1");
        (void) new QRadioButton(tr("1:2 (22 kHz)"), m_pDownSampleGroup, "1:2");
        (void) new QRadioButton(tr("1:4 (11 kHz)"), m_pDownSampleGroup, "1:4");

//          sub1->addWidget(res);
        sub1->addWidget(m_pChannelGroup);
        sub1->addWidget(m_pDownSampleGroup);

        // Set defaults
        m_pChannelGroup->setButton( 0 );
        m_pDownSampleGroup->setButton( 0 );
    }

// 	main->addWidget(filegroup);

//     QHBoxLayout *sub1 = new QHBoxLayout(4);
//     main->addLayout( sub1, 0 );
//     {
// //          QButtonGroup *res = new QButtonGroup(2, Qt::Vertical,
// //                                               tr("Resolution"),this);
// //          QRadioButton *bits_sixteen = new QRadioButton(tr("16 bit"), res, "16Bit");
// //          QRadioButton *bits_eight = new QRadioButton(tr("8 bit"), res, "8Bit");

//         m_pChannelGroup = new QButtonGroup(2, Qt::Vertical,
//                                               tr("Channels"),this);
//         (void) new QRadioButton(tr("Stereo (if available)"), m_pChannelGroup, "Stereo");
//         (void) new QRadioButton(tr("Mono"), m_pChannelGroup, "Mono");

//         m_pDownSampleGroup = new QButtonGroup(3, Qt::Vertical,
//                                               tr("Down sample"),this);
//         (void) new QRadioButton(tr("1:1 (44 kHz)"), m_pDownSampleGroup, "1:1");
//         (void) new QRadioButton(tr("1:2 (22 kHz)"), m_pDownSampleGroup, "1:2");
//         (void) new QRadioButton(tr("1:4 (11 kHz)"), m_pDownSampleGroup, "1:4");

// //          sub1->addWidget(res);
//         sub1->addWidget(m_pChannelGroup);
//         sub1->addWidget(m_pDownSampleGroup);

//         // Set defaults
//         m_pChannelGroup->setButton( 0 );
//         m_pDownSampleGroup->setButton( 0 );
//     }

#ifdef ENABLE_MPG123_BUFFER	
	QVGroupBox *buffergroup = new QVGroupBox(tr("Buffer"), this);
	(void) new QLabel(tr("<table><tr><td>"
						 "If you provide mpg123 with a buffer, you are less "
						 "likely to experience \"jumps\" during play when "
						 "the load on the system is high.  Player operations "
						 "will be delayed, however, as mpg123 will play from "
						 "the buffer before responding to commands."
						 "</td></tr></table>"),
					  buffergroup);
	m_pBuffer = new QSlider(0, 10, 1, 0, Horizontal, buffergroup);
	m_pBuffer->setTracking(true);
	m_pBuffer->setTickmarks(QSlider::Below);
	
	m_pBufferSize = new QLabel(tr("No buffer"), buffergroup);
	m_pBufferSize->setFixedSize(m_pBufferSize->sizeHint());

	connect(m_pBuffer, SIGNAL(valueChanged(int)), this, SLOT(bufferChanged(int)));
	
	main->addWidget(buffergroup);
#endif // ENABLE_MPG123_BUFFER	
}


/*!
  Destroys the page.
*/

QmMpg123Page::~QmMpg123Page()
{
}


/*!
  Displays the buffer size \a value (megabytes) in the corresponding label.
 */

void
QmMpg123Page::bufferChanged(
	int value)
{
	QString str;

	if(value == 0)
		str = tr("No buffer");
	else
		str = tr("%1 MB").arg(value);
	
	m_pBufferSize->setText(str);

	changed();
}


/*!
  Opens a file dialog for locating mpg123.
*/

void
QmMpg123Page::browse()
{
	QString str = QFileDialog::getOpenFileName(QString::null, QString::null, this);

	if( ! str.isNull())
		m_pPath->setText(str);
		changed();
}

void
QmMpg123Page::browseArtsdp()
{
	QString str = QFileDialog::getOpenFileName(QString::null, QString::null, this);

	if( ! str.isNull())
	{
		m_pArtsdspPath->setText(str);
		changed();
	}
}


/*!

 */

void
QmMpg123Page::load()
{
	QmConfig *conf = QmConfig::instance();
	m_pPath->setText(conf->getString( "mpg123", "path" ));
	m_pArtsdspPath->setText(conf->getString( "mpg123", "artsdsp" ));
	m_pChannelGroup->setButton(conf->getString( "mpg123", "channels" ) == "mono" ? 1 : 0);
    int down_id = conf->getInt( "mpg123", "downsample" );
	m_pDownSampleGroup->setButton((down_id > 2 || down_id < 0) ? 0 : down_id);

#ifdef ENABLE_MPG123_BUFFER	
	int initval;
	conf->get( "mpg123", "buffer", initval );
	m_pBuffer->setValue(initval);
#endif	
}

// void
// QmMpg123Page::load()
// {
// 	m_pPath->setText(QmConfig::instance()->getString( "mpg123", "path" ));
// 	m_pChannelGroup->setButton(QmConfig::instance()->getString( "mpg123", "channels" ) == "mono" ? 1 : 0);
//     int down_id = QmConfig::instance()->getInt( "mpg123", "downsample" );
// 	m_pDownSampleGroup->setButton((down_id > 2 || down_id < 0) ? 0 : down_id);

// #ifdef ENABLE_MPG123_BUFFER	
// 	int initval;
// 	QmConfig::instance()->get( "mpg123", "buffer", initval );
// 	m_pBuffer->setValue(initval);
// #endif	
// }

/*!

 */

void
QmMpg123Page::save()
{
#ifdef ENABLE_MPG123_BUFFER
	QmConfig::instance()->set("mpg123", "buffer", m_pBuffer->value());
#endif
	QmConfig::instance()->set("mpg123", "channels",
                              m_pChannelGroup->id(m_pChannelGroup->selected()) == 1 ? "mono" : "stereo");
	QmConfig::instance()->set("mpg123", "downsample",
                              m_pDownSampleGroup->id(m_pDownSampleGroup->selected()));
	QmConfig::instance()->set("mpg123", "path", m_pPath->text());
	QmConfig::instance()->set("mpg123", "artsdsp", m_pArtsdspPath->text());
}


// void
// QmMpg123Page::save()
// {
// #ifdef ENABLE_MPG123_BUFFER	
// 	QmConfig::instance()->set("mpg123", "buffer", m_pBuffer->value());
// #endif
// 	QmConfig::instance()->set("mpg123", "channels",
//                               m_pChannelGroup->id(m_pChannelGroup->selected()) == 1 ? "mono" : "stereo");
// 	QmConfig::instance()->set("mpg123", "downsample",
//                               m_pDownSampleGroup->id(m_pDownSampleGroup->selected()));
// 	QmConfig::instance()->set("mpg123", "path", m_pPath->text());
// }

/*!

 */

void
QmMpg123Page::discard()
{
	load();
}