cdaudio: added disk cache

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

1 files changed, 15 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;