cdaudio: added disk cache

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@3954 90c681e8-e032-0410-971d-27865f9a5e38

3 files changed, 21 insertions, 0 deletions

diff --git a/src/plugins/Input/cdaudio/decoder_cdaudio.cpp b/src/plugins/Input/cdaudio/decoder_cdaudio.cpp
index 0bd8b4f5e..88a22a2d6 100644
--- a/src/plugins/Input/cdaudio/decoder_cdaudio.cpp
+++ b/src/plugins/Input/cdaudio/decoder_cdaudio.cpp
@@ -43,6 +43,8 @@
 
 #include "decoder_cdaudio.h"
 
+QList <CDATrack> DecoderCDAudio::m_track_cache;
+
 static void log_handler (cdio_log_level_t level, const char message[])
 {
     QString str = QString::fromLocal8Bit(message).trimmed();
@@ -133,6 +135,13 @@ QList <CDATrack> DecoderCDAudio::generateTrackList(const QString &device)
         qDebug("DecoderCDAudio: using cd audio capable drive \"%s\"", qPrintable(device_path));
     }
 
+    if(!m_track_cache.isEmpty() && !cdio_get_media_changed(cdio))
+    {
+        qDebug("DecoderCDAudio: using track cache...");
+        cdio_destroy(cdio);
+        return m_track_cache;
+    }
+
     if (cd_speed)
     {
         qDebug("DecoderCDAudio: setting drive speed to %dX.", cd_speed);
@@ -294,6 +303,7 @@ QList <CDATrack> DecoderCDAudio::generateTrackList(const QString &device)
 
     cdio_destroy(cdio);
     cdio = 0;
+    m_track_cache = tracks;
     return tracks;
 }
 
@@ -344,6 +354,11 @@ qint64 DecoderCDAudio::calculateTrackLength(lsn_t startlsn, lsn_t endlsn)
     return ((endlsn - startlsn + 1) * 1000) / 75;
 }
 
+void DecoderCDAudio::clearTrackCache()
+{
+    m_track_cache.clear();
+}
+
 bool DecoderCDAudio::initialize()
 {
     m_bitrate = 0;
diff --git a/src/plugins/Input/cdaudio/decoder_cdaudio.h b/src/plugins/Input/cdaudio/decoder_cdaudio.h
index e84521bb6..50a87c161 100644
--- a/src/plugins/Input/cdaudio/decoder_cdaudio.h
+++ b/src/plugins/Input/cdaudio/decoder_cdaudio.h
@@ -48,6 +48,7 @@ public:
 
     static QList <CDATrack> generateTrackList(const QString &device);
     static qint64 calculateTrackLength(lsn_t startlsn, lsn_t endlsn);
+    static void clearTrackCache();
 
      // Standard Decoder API
     bool initialize();
@@ -71,6 +72,8 @@ private:
     qint64 m_totalTime;
     char *m_buffer;
     qint64 m_buffer_at;
+    //tracks cache
+    static QList <CDATrack> m_track_cache;
 };
 
 #endif // DECODER_CDAUIDO_H
diff --git a/src/plugins/Input/cdaudio/settingsdialog.cpp b/src/plugins/Input/cdaudio/settingsdialog.cpp
index b41b86b7a..8404d43f9 100644
--- a/src/plugins/Input/cdaudio/settingsdialog.cpp
+++ b/src/plugins/Input/cdaudio/settingsdialog.cpp
@@ -21,6 +21,7 @@
 #include <QSettings>
 #include <QDir>
 #include <qmmp/qmmp.h>
+#include "decoder_cdaudio.h"
 #include "settingsdialog.h"
 
 SettingsDialog::SettingsDialog(QWidget *parent)
@@ -67,6 +68,8 @@ void SettingsDialog::accept()
     settings.setValue("cddb_path", ui.pathLineEdit->text());
     settings.setValue("cddb_port", ui.portLineEdit->text());
     settings.endGroup();
+    settings.sync();
+    DecoderCDAudio::clearCacheCache();
     QDialog::accept();
 }