From d6da2b97d85a304512aeb1580bdd2d058770e1d2 Mon Sep 17 00:00:00 2001
From: Jeremy Lainé <jeremy.laine@m4x.org>
Date: Fri, 16 Jul 2010 09:26:23 +0000
Subject: add G711a, G711u and SPEEX codecs

---
 source/QXmppCodec.h | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 source/QXmppCodec.h

(limited to 'source/QXmppCodec.h')

diff --git a/source/QXmppCodec.h b/source/QXmppCodec.h
new file mode 100644
index 00000000..e8f6631c
--- /dev/null
+++ b/source/QXmppCodec.h
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2010 Bolloré telecom
+ *
+ * Author:
+ *	Jeremy Lainé
+ *
+ * Source:
+ *	http://code.google.com/p/qxmpp
+ *
+ * This file is a part of QXmpp library.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ */
+
+#ifndef QXMPPCODEC_H
+#define QXMPPCODEC_H
+
+#include <QtGlobal>
+
+/// The QXmppCodec class is the base class for audio codecs capable of
+/// encoding / decoding 16-bit mono samples.
+
+class QXmppCodec
+{
+public:
+    virtual int bitrate() const = 0;
+    virtual qint64 encode(QDataStream &input, QDataStream &output) = 0;
+    virtual qint64 decode(QDataStream &input, QDataStream &output) = 0;
+};
+
+/// The QXmppG711aCodec class represent a G.711 a-law PCM codec.
+
+class QXmppG711aCodec : public QXmppCodec
+{
+public:
+    QXmppG711aCodec(int clockrate);
+
+    int bitrate() const;
+    qint64 encode(QDataStream &input, QDataStream &output);
+    qint64 decode(QDataStream &input, QDataStream &output);
+
+private:
+    int m_frequency;
+};
+
+/// The QXmppG711uCodec class represent a G.711 u-law PCM codec.
+
+class QXmppG711uCodec : public QXmppCodec
+{
+public:
+    QXmppG711uCodec(int clockrate);
+
+    int bitrate() const;
+    qint64 encode(QDataStream &input, QDataStream &output);
+    qint64 decode(QDataStream &input, QDataStream &output);
+
+private:
+    int m_frequency;
+};
+
+#ifdef QXMPP_USE_SPEEX
+typedef struct SpeexBits SpeexBits;
+
+/// The QXmppSpeexCodec class represent a SPEEX codec.
+
+class QXmppSpeexCodec : public QXmppCodec
+{
+public:
+    QXmppSpeexCodec(int clockrate);
+    ~QXmppSpeexCodec();
+
+    int bitrate() const;
+    qint64 encode(QDataStream &input, QDataStream &output);
+    qint64 decode(QDataStream &input, QDataStream &output);
+
+private:
+    SpeexBits *encoder_bits;
+    void *encoder_state;
+    SpeexBits *decoder_bits;
+    void *decoder_state;
+    int frame_samples;
+};
+#endif
+
+#endif
-- 
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