284 lines
7.5 KiB
C++
284 lines
7.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// LameXP - Audio Encoder Front-End
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// Copyright (C) 2004-2011 LoRd_MuldeR <MuldeR2@GMX.de>
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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// http://www.gnu.org/licenses/gpl-2.0.txt
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///////////////////////////////////////////////////////////////////////////////
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#include "Encoder_MP3.h"
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#include "Global.h"
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#include "Model_Settings.h"
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#include <QProcess>
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#include <QDir>
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#include <limits.h>
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static const int g_lameAgorithmQualityLUT[] = {9, 7, 5, 2, 0, INT_MAX};
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MP3Encoder::MP3Encoder(void)
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:
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m_binary(lamexp_lookup_tool("lame.exe"))
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{
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if(m_binary.isEmpty())
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{
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throw "Error initializing MP3 encoder. Tool 'lame.exe' is not registred!";
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}
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m_algorithmQuality = 3;
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m_configBitrateMaximum = 0;
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m_configBitrateMinimum = 0;
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m_configSamplingRate = 0;
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m_configChannelMode = 0;
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}
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MP3Encoder::~MP3Encoder(void)
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{
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}
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bool MP3Encoder::encode(const QString &sourceFile, const AudioFileModel &metaInfo, const QString &outputFile, volatile bool *abortFlag)
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{
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QProcess process;
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QStringList args;
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args << "--nohist";
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args << "-q" << QString::number(g_lameAgorithmQualityLUT[m_algorithmQuality]);
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switch(m_configRCMode)
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{
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case SettingsModel::VBRMode:
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args << "-V" << QString::number(9 - qMin(9, m_configBitrate));
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break;
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case SettingsModel::ABRMode:
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args << "--abr" << QString::number(SettingsModel::mp3Bitrates[qMax(0, qMin(13, m_configBitrate))]);
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break;
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case SettingsModel::CBRMode:
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args << "--cbr";
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args << "-b" << QString::number(SettingsModel::mp3Bitrates[qMax(0, qMin(13, m_configBitrate))]);
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break;
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default:
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throw "Bad rate-control mode!";
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break;
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}
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if((m_configBitrateMaximum > 0) && (m_configBitrateMinimum > 0) && (m_configBitrateMinimum <= m_configBitrateMaximum))
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{
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if(m_configRCMode != SettingsModel::CBRMode)
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{
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args << "-b" << QString::number(clipBitrate(m_configBitrateMinimum));
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args << "-B" << QString::number(clipBitrate(m_configBitrateMaximum));
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}
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}
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if(m_configSamplingRate > 0)
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{
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args << "--resample" << QString::number(m_configSamplingRate);
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}
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switch(m_configChannelMode)
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{
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case 1:
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args << "-m" << "j";
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break;
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case 2:
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args << "-m" << "f";
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break;
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case 3:
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args << "-m" << "s";
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break;
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case 4:
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args << "-m" << "d";
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break;
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case 5:
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args << "-m" << "m";
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break;
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}
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bool bUseUCS2 = false;
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if(!metaInfo.fileName().isEmpty() && isUnicode(metaInfo.fileName())) bUseUCS2 = true;
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if(!metaInfo.fileArtist().isEmpty() && isUnicode(metaInfo.fileArtist())) bUseUCS2 = true;
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if(!metaInfo.fileAlbum().isEmpty() && isUnicode(metaInfo.fileAlbum())) bUseUCS2 = true;
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if(!metaInfo.fileGenre().isEmpty() && isUnicode(metaInfo.fileGenre())) bUseUCS2 = true;
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if(!metaInfo.fileComment().isEmpty() && isUnicode(metaInfo.fileComment())) bUseUCS2 = true;
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if(bUseUCS2) args << "--id3v2-ucs2"; //Must specify this BEFORE "--tt" and friends!
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if(!metaInfo.fileName().isEmpty()) args << "--tt" << metaInfo.fileName();
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if(!metaInfo.fileArtist().isEmpty()) args << "--ta" << metaInfo.fileArtist();
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if(!metaInfo.fileAlbum().isEmpty()) args << "--tl" << metaInfo.fileAlbum();
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if(!metaInfo.fileGenre().isEmpty()) args << "--tg" << metaInfo.fileGenre();
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if(!metaInfo.fileComment().isEmpty()) args << "--tc" << metaInfo.fileComment();
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if(metaInfo.fileYear()) args << "--ty" << QString::number(metaInfo.fileYear());
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if(metaInfo.filePosition()) args << "--tn" << QString::number(metaInfo.filePosition());
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if(!metaInfo.fileCover().isEmpty()) args << "--ti" << QDir::toNativeSeparators(metaInfo.fileCover());
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if(!m_configCustomParams.isEmpty()) args << m_configCustomParams.split(" ", QString::SkipEmptyParts);
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args << QDir::toNativeSeparators(sourceFile);
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args << QDir::toNativeSeparators(outputFile);
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if(!startProcess(process, m_binary, args))
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{
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return false;
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}
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bool bTimeout = false;
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bool bAborted = false;
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int prevProgress = -1;
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QRegExp regExp("\\(.*(\\d+)%\\)\\|");
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while(process.state() != QProcess::NotRunning)
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{
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if(*abortFlag)
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{
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process.kill();
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bAborted = true;
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emit messageLogged("\nABORTED BY USER !!!");
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break;
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}
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process.waitForReadyRead(m_processTimeoutInterval);
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if(!process.bytesAvailable() && process.state() == QProcess::Running)
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{
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process.kill();
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qWarning("LAME process timed out <-- killing!");
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emit messageLogged("\nPROCESS TIMEOUT !!!");
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bTimeout = true;
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break;
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}
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while(process.bytesAvailable() > 0)
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{
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QByteArray line = process.readLine();
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QString text = QString::fromUtf8(line.constData()).simplified();
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if(regExp.lastIndexIn(text) >= 0)
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{
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bool ok = false;
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int progress = regExp.cap(1).toInt(&ok);
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if(ok && (progress > prevProgress))
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{
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emit statusUpdated(progress);
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prevProgress = qMin(progress + 2, 99);
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}
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}
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else if(!text.isEmpty())
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{
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emit messageLogged(text);
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}
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}
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}
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process.waitForFinished();
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if(process.state() != QProcess::NotRunning)
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{
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process.kill();
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process.waitForFinished(-1);
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}
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emit statusUpdated(100);
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emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
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if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS)
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{
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return false;
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}
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return true;
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}
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QString MP3Encoder::extension(void)
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{
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return "mp3";
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}
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bool MP3Encoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
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{
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if(containerType.compare("Wave", Qt::CaseInsensitive) == 0)
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{
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if(formatType.compare("PCM", Qt::CaseInsensitive) == 0)
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{
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return true;
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}
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}
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else if(containerType.compare("MPEG Audio", Qt::CaseInsensitive) == 0)
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{
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if(formatType.compare("MPEG Audio", Qt::CaseInsensitive) == 0)
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{
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if(formatProfile.compare("Layer 3", Qt::CaseInsensitive) == 0 || formatProfile.compare("Layer 2", Qt::CaseInsensitive) == 0)
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{
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if(formatVersion.compare("Version 1", Qt::CaseInsensitive) == 0 || formatVersion.compare("Version 2", Qt::CaseInsensitive) == 0)
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{
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return true;
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}
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}
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}
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}
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return false;
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}
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bool MP3Encoder::requiresDownmix(void)
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{
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return true;
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}
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void MP3Encoder::setAlgoQuality(int value)
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{
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m_algorithmQuality = value;
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}
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void MP3Encoder::setBitrateLimits(int minimumBitrate, int maximumBitrate)
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{
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m_configBitrateMinimum = minimumBitrate;
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m_configBitrateMaximum = maximumBitrate;
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}
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void MP3Encoder::setSamplingRate(int value)
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{
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m_configSamplingRate = value;
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}
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void MP3Encoder::setChannelMode(int value)
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{
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m_configChannelMode = value;
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}
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int MP3Encoder::clipBitrate(int bitrate)
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{
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int targetBitrate = qMin(qMax(bitrate, 32), 320);
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int minDiff = INT_MAX;
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int minIndx = -1;
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for(int i = 0; SettingsModel::mp3Bitrates[i] > 0; i++)
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{
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int currentDiff = abs(targetBitrate - SettingsModel::mp3Bitrates[i]);
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if(currentDiff < minDiff)
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{
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minDiff = currentDiff;
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minIndx = i;
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}
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}
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if(minIndx >= 0)
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{
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return SettingsModel::mp3Bitrates[minIndx];
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}
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return targetBitrate;
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}
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