1 files changed, 59 insertions, 0 deletions
diff --git a/webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red.h b/webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red.h
new file mode 100644
index 0000000000..8d0e427c58
--- /dev/null
+++ b/webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red.h
@@ -0,0 +1,59 @@
+/*
+ *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_RED_AUDIO_ENCODER_COPY_RED_H_
+#define WEBRTC_MODULES_AUDIO_CODING_CODECS_RED_AUDIO_ENCODER_COPY_RED_H_
+
+#include <vector>
+
+#include "webrtc/modules/audio_coding/codecs/audio_encoder.h"
+#include "webrtc/system_wrappers/interface/scoped_ptr.h"
+
+namespace webrtc {
+
+// This class implements redundant audio coding. The class object will have an
+// underlying AudioEncoder object that performs the actual encodings. The
+// current class will gather the two latest encodings from the underlying codec
+// into one packet.
+class AudioEncoderCopyRed : public AudioEncoder {
+ public:
+  struct Config {
+   public:
+    int payload_type;
+    AudioEncoder* speech_encoder;
+  };
+
+  // Caller keeps ownership of the AudioEncoder object.
+  explicit AudioEncoderCopyRed(const Config& config);
+
+  virtual ~AudioEncoderCopyRed();
+
+  virtual int sample_rate_hz() const OVERRIDE;
+  virtual int num_channels() const OVERRIDE;
+  virtual int Num10MsFramesInNextPacket() const OVERRIDE;
+  virtual int Max10MsFramesInAPacket() const OVERRIDE;
+
+ protected:
+  virtual bool EncodeInternal(uint32_t timestamp,
+                              const int16_t* audio,
+                              size_t max_encoded_bytes,
+                              uint8_t* encoded,
+                              EncodedInfo* info) OVERRIDE;
+
+ private:
+  AudioEncoder* speech_encoder_;
+  int red_payload_type_;
+  scoped_ptr<uint8_t[]> secondary_encoded_;
+  size_t secondary_allocated_;
+  EncodedInfoLeaf secondary_info_;
+};
+
+}  // namespace webrtc
+#endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_RED_AUDIO_ENCODER_COPY_RED_H_