1 files changed, 158 insertions, 0 deletions
diff --git a/lib/decoder.h b/lib/decoder.h
new file mode 100644
index 000000000..c7b099067
--- /dev/null
+++ b/lib/decoder.h
@@ -0,0 +1,158 @@
+// Copyright (c) 2000-2001 Brad Hughes <bhughes@trolltech.com>
+//
+// Use, modification and distribution is allowed without limitation,
+// warranty, or liability of any kind.
+//
+
+#ifndef   DECODER_H
+#define   DECODER_H
+
+#include <QThread>
+#include <QList>
+#include <QMutex>
+#include <QWaitCondition>
+#include <QObject>
+
+
+#include "fileinfo.h"
+#include "filetag.h"
+
+class QObject;
+class QIODevice;
+
+class Decoder;
+class DecoderFactory;
+class Buffer;
+class Recycler;
+class Output;
+class Visualization;
+
+
+
+class DecoderState
+{
+public:
+    enum Type { Decoding, Stopped, Finished, Error };
+
+    DecoderState(Type t)
+            : m_type(t), m_error_msg(0)
+    {}
+
+    DecoderState(const QString &e)
+            : m_type(Error)
+    {
+        m_error_msg = new QString(e);
+    }
+
+    DecoderState()
+            : m_type(Stopped), m_error_msg(0)
+    {}
+
+    ~DecoderState()
+    {
+        if (m_error_msg)
+           delete m_error_msg;
+    }
+
+    const QString *errorMessage() const
+    {
+        return m_error_msg;
+    }
+    const Type &type() const
+    {
+        return m_type;
+    }
+
+private:
+    Type m_type;
+    const QString *m_error_msg;
+};
+
+
+
+class Decoder : public QThread
+{
+Q_OBJECT
+public:
+    Decoder(QObject *parent, DecoderFactory *d, 
+               QIODevice *i, Output *o);
+    virtual ~Decoder();
+
+    // Standard Decoder API
+    virtual bool initialize() = 0;
+    virtual double lengthInSeconds() = 0;
+    virtual void seek(double) = 0;
+    virtual void stop() = 0;
+
+    DecoderFactory *factory() const
+    {
+        return fctry;
+    }
+
+    QIODevice *input()
+    {
+        return in;
+    }
+    Output *output()
+    {
+        return out;
+    }
+
+    QMutex *mutex()
+    {
+        return &mtx;
+    }
+    QWaitCondition *cond()
+    {
+        return &cnd;
+    }
+
+    void setBlockSize(unsigned int sz)
+    {
+        blksize = sz;
+    }
+
+    unsigned int blockSize() const
+    {
+        return blksize;
+    }
+    ulong produceSound(char *data, ulong output_bytes, ulong bitrate, int nch);
+    void setEQ(int bands[10], int preamp);
+    void setEQEnabled(bool on) { m_useEQ = on; };
+
+    // static methods
+    static QStringList all();
+    static bool supports(const QString &);
+    //static void registerFactory(DecoderFactory *);
+    static Decoder *create(QObject *, const QString &, QIODevice *, Output *);
+    static DecoderFactory *findFactory(const QString&);
+    static FileTag *createTag(const QString&);
+    static QString filter();
+    static QStringList nameFilters();
+    static QList<DecoderFactory*> *decoderFactories();
+    static QStringList decoderFiles();
+
+signals:
+    void stateChanged(const DecoderState&);
+
+protected:
+    void dispatch(DecoderState::Type);
+    void dispatch(const DecoderState&);
+    void error(const QString&);
+
+private:
+    DecoderFactory *fctry;
+
+    QList<QObject*> listeners;
+    QIODevice *in;
+    Output *out;
+
+    QMutex mtx;
+    QWaitCondition cnd;
+
+    uint blksize;
+    bool m_eqInited;
+    bool m_useEQ;
+};
+
+#endif // DECODER_H