Speex encoding/decoding.

remoting/codec/audio_encoder_speex.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef REMOTING_CODEC_AUDIO_ENCODER_SPEEX_H_
+#define REMOTING_CODEC_AUDIO_ENCODER_SPEEX_H_
+
+#include <list>
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "remoting/codec/audio_encoder.h"
+
+struct SpeexBits;
+
+namespace remoting {
+
+class AudioPacket;
+
+class AudioEncoderSpeex : public AudioEncoder {
+ public:
+  AudioEncoderSpeex();
+  virtual ~AudioEncoderSpeex();
+
+  // AudioEncoder implementation.
+  virtual scoped_ptr<AudioPacket> Encode(
+      scoped_ptr<AudioPacket> packet) OVERRIDE;
+
+ private:
+  scoped_ptr<SpeexBits> speex_bits_;
+  void* speex_state_;
+  int speex_frame_size_;
+
+  scoped_array<int16> leftover_buffer_;
+  // We may have some left-over unencoded frames from the previous AudioPacket.
+  int leftover_frames_;
+
+  DISALLOW_COPY_AND_ASSIGN(AudioEncoderSpeex);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_CODEC_AUDIO_ENCODER_SPEEX_H_