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/*
* 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/base/buffer.h"
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/modules/audio_coding/codecs/audio_encoder.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 final : public AudioEncoder {
public:
struct Config {
public:
int payload_type;
AudioEncoder* speech_encoder;
};
// Caller keeps ownership of the AudioEncoder object.
explicit AudioEncoderCopyRed(const Config& config);
~AudioEncoderCopyRed() override;
size_t MaxEncodedBytes() const override;
int SampleRateHz() const override;
size_t NumChannels() const override;
int RtpTimestampRateHz() const override;
size_t Num10MsFramesInNextPacket() const override;
size_t Max10MsFramesInAPacket() const override;
int GetTargetBitrate() const override;
EncodedInfo EncodeInternal(uint32_t rtp_timestamp,
rtc::ArrayView<const int16_t> audio,
size_t max_encoded_bytes,
uint8_t* encoded) override;
void Reset() override;
bool SetFec(bool enable) override;
bool SetDtx(bool enable) override;
bool SetApplication(Application application) override;
void SetMaxPlaybackRate(int frequency_hz) override;
void SetProjectedPacketLossRate(double fraction) override;
void SetTargetBitrate(int target_bps) override;
private:
AudioEncoder* speech_encoder_;
int red_payload_type_;
rtc::Buffer secondary_encoded_;
EncodedInfoLeaf secondary_info_;
RTC_DISALLOW_COPY_AND_ASSIGN(AudioEncoderCopyRed);
};
} // namespace webrtc
#endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_RED_AUDIO_ENCODER_COPY_RED_H_
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