add virtual destructors for codecs

2 files changed, 25 insertions, 0 deletions

diff --git a/src/base/QXmppCodec.cpp b/src/base/QXmppCodec.cpp
index fde17299..8e786fa4 100644
--- a/src/base/QXmppCodec.cpp
+++ b/src/base/QXmppCodec.cpp
@@ -248,6 +248,24 @@ static qint16 ulaw2linear(quint8 u_val)
    return ((u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS));
 }
 
+/// Destroys an audio codec.
+
+QXmppCodec::~QXmppCodec()
+{
+}
+
+/// Destroys a video decoder.
+
+QXmppVideoDecoder::~QXmppVideoDecoder()
+{
+}
+
+/// Destroys a video encoder.
+
+QXmppVideoEncoder::~QXmppVideoEncoder()
+{
+}
+
 QXmppG711aCodec::QXmppG711aCodec(int clockrate)
 {
     m_frequency = clockrate;
diff --git a/src/base/QXmppCodec.h b/src/base/QXmppCodec.h
index 58468825..8a0e81d6 100644
--- a/src/base/QXmppCodec.h
+++ b/src/base/QXmppCodec.h
@@ -40,6 +40,8 @@ class QXmppVideoFrame;
 class QXMPP_EXPORT QXmppCodec
 {
 public:
+    virtual ~QXmppCodec();
+
     /// Reads samples from the input stream, encodes them and writes the
     /// encoded data to the output stream.
     virtual qint64 encode(QDataStream &input, QDataStream &output) = 0;
@@ -112,14 +114,19 @@ private:
 class QXMPP_EXPORT QXmppVideoDecoder
 {
 public:
+    virtual ~QXmppVideoDecoder();
     virtual QXmppVideoFormat format() const = 0;
     virtual QList<QXmppVideoFrame> handlePacket(const QXmppRtpPacket &packet) = 0;
     virtual bool setParameters(const QMap<QString, QString> &parameters) = 0;
 };
 
+/// \brief The QXmppVideoEncoder class is the base class for video encoders.
+///
+
 class QXMPP_EXPORT QXmppVideoEncoder
 {
 public:
+    virtual ~QXmppVideoEncoder();
     virtual bool setFormat(const QXmppVideoFormat &format) = 0;
     virtual QList<QByteArray> handleFrame(const QXmppVideoFrame &frame) = 0;
     virtual QMap<QString, QString> parameters() const = 0;