142 lines
3.9 KiB
C++
142 lines
3.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// LameXP - Audio Encoder Front-End
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// Copyright (C) 2004-2018 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, but always including the *additional*
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// restrictions defined in the "License.txt" file.
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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 "Decoder_MP3.h"
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//Internal
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#include "Global.h"
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//MUtils
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#include <MUtils/Global.h>
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#include <MUtils/Exception.h>
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//Qt
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#include <QDir>
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#include <QProcess>
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#include <QRegExp>
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#include <QMutexLocker>
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//Static
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QMutex MP3Decoder::m_regexMutex;
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MUtils::Lazy<QRegExp> MP3Decoder::m_regxLayer([]
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{
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return new QRegExp(L1S("^Layer\\s+(1|2|3)\\b"), Qt::CaseInsensitive);
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});
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MUtils::Lazy<QRegExp> MP3Decoder::m_regxVersion([]
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{
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return new QRegExp(L1S("^(Version\\s+)?(1|2|2\\.5)\\b"), Qt::CaseInsensitive);
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});
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MP3Decoder::MP3Decoder(void)
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:
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m_binary(lamexp_tools_lookup("mpg123.exe"))
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{
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if (m_binary.isEmpty())
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{
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MUTILS_THROW("Error initializing MPG123 decoder. Tool 'mpg123.exe' is not registred!");
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}
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}
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MP3Decoder::~MP3Decoder(void)
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{
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}
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bool MP3Decoder::decode(const QString &sourceFile, const QString &outputFile, QAtomicInt &abortFlag)
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{
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QProcess process;
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QStringList args;
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args << "-v" << "--utf8" << "-w" << QDir::toNativeSeparators(outputFile);
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args << QDir::toNativeSeparators(sourceFile);
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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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int prevProgress = -1;
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QRegExp regExp("[_=>]\\s+(\\d+)\\+(\\d+)\\s+");
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const result_t result = awaitProcess(process, abortFlag, [this, &prevProgress, ®Exp](const QString &text)
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{
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if (regExp.lastIndexIn(text) >= 0)
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{
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quint32 values[2];
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if (MUtils::regexp_parse_uint32(regExp, values, 2))
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{
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const quint32 total = values[0] + values[1];
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if ((total >= 512U) && (values[0] >= 256U))
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{
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const int newProgress = qRound((static_cast<double>(values[0]) / static_cast<double>(total)) * 100.0);
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if (newProgress > prevProgress)
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{
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emit statusUpdated(newProgress);
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prevProgress = NEXT_PROGRESS(newProgress);
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}
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}
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}
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return true;
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}
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return false;
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});
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return (result == RESULT_SUCCESS);
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}
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bool MP3Decoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
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{
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static const QLatin1String mpegAudio("MPEG Audio"), waveAudio("Wave");
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if((containerType.compare(mpegAudio, Qt::CaseInsensitive) == 0) || (containerType.compare(waveAudio, Qt::CaseInsensitive) == 0))
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{
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if(formatType.compare(mpegAudio, Qt::CaseInsensitive) == 0)
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{
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QMutexLocker lock(&m_regexMutex);
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if ((*m_regxLayer).indexIn(formatProfile) >= 0)
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{
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return ((*m_regxVersion).indexIn(formatVersion) >= 0);
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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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const AbstractDecoder::supportedType_t *MP3Decoder::supportedTypes(void)
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{
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static const char *exts[][3] =
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{
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{ "mp3", "mpa", NULL },
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{ "mp2", "mpa", NULL },
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{ "mp1", "mpa", NULL }
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};
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static const supportedType_t s_supportedTypes[] =
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{
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{ "MPEG Audio Layer III", exts[0] },
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{ "MPEG Audio Layer II", exts[1] },
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{ "MPEG Audio Layer I", exts[2] },
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{ NULL, NULL }
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};
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return s_supportedTypes;
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}
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