enabled replaygain support (for mp3 file with ape tags only)

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@1453 90c681e8-e032-0410-971d-27865f9a5e38

1 files changed, 63 insertions, 0 deletions

diff --git a/src/plugins/Input/mad/replaygainreader.cpp b/src/plugins/Input/mad/replaygainreader.cpp
new file mode 100644
index 000000000..88f3dc974
--- /dev/null
+++ b/src/plugins/Input/mad/replaygainreader.cpp
@@ -0,0 +1,63 @@
+/***************************************************************************
+ *   Copyright (C) 2009 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.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#include <QtGlobal>
+#include <taglib/mpegfile.h>
+#include <taglib/id3v2tag.h>
+#include <taglib/tag.h>
+#include <taglib/id3v1tag.h>
+#include <taglib/id3v2header.h>
+#include "replaygainreader.h"
+
+ReplayGainReader::ReplayGainReader(const QString &path)
+{
+    TagLib::MPEG::File fileRef(path.toLocal8Bit ().constData());
+    if(fileRef.APETag())
+        readAPE(fileRef.APETag());
+}
+
+QMap <Qmmp::ReplayGainKey, double> ReplayGainReader::replayGainInfo() const
+{
+    return m_values;
+}
+
+void ReplayGainReader::readAPE(TagLib::APE::Tag *tag)
+{
+    TagLib::APE::ItemListMap items = tag->itemListMap();
+    if (items.contains("REPLAYGAIN_TRACK_GAIN")) 
+        setValue(Qmmp::REPLAYGAIN_TRACK_GAIN,TStringToQString(items["REPLAYGAIN_TRACK_GAIN"].values()[0]));
+    if (items.contains("REPLAYGAIN_TRACK_PEAK"))
+        setValue(Qmmp::REPLAYGAIN_TRACK_PEAK,TStringToQString(items["REPLAYGAIN_TRACK_PEAK"].values()[0]));
+    if (items.contains("REPLAYGAIN_ALBUM_GAIN"))
+        setValue(Qmmp::REPLAYGAIN_ALBUM_GAIN,TStringToQString(items["REPLAYGAIN_ALBUM_GAIN"].values()[0]));
+    if (items.contains("REPLAYGAIN_ALBUM_PEAK"))
+        setValue(Qmmp::REPLAYGAIN_ALBUM_PEAK,TStringToQString(items["REPLAYGAIN_ALBUM_PEAK"].values()[0]));
+}
+
+void ReplayGainReader::setValue(Qmmp::ReplayGainKey key, QString value)
+{
+    value.remove(" dB");
+    if(value.isEmpty())
+        return;
+    bool ok;
+    double v = value.toDouble(&ok);
+    if(ok)
+        m_values[key] = v;
+}