| /* |
| * 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 MODULES_AUDIO_CODING_CODECS_RED_AUDIO_ENCODER_COPY_RED_H_ |
| #define MODULES_AUDIO_CODING_CODECS_RED_AUDIO_ENCODER_COPY_RED_H_ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| #include <memory> |
| |
| #include "absl/types/optional.h" |
| #include "api/array_view.h" |
| #include "api/audio_codecs/audio_encoder.h" |
| #include "rtc_base/buffer.h" |
| #include "rtc_base/constructor_magic.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 { |
| Config(); |
| Config(Config&&); |
| ~Config(); |
| int payload_type; |
| std::unique_ptr<AudioEncoder> speech_encoder; |
| }; |
| |
| explicit AudioEncoderCopyRed(Config&& config); |
| |
| ~AudioEncoderCopyRed() 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; |
| void Reset() override; |
| bool SetFec(bool enable) override; |
| bool SetDtx(bool enable) override; |
| bool SetApplication(Application application) override; |
| void SetMaxPlaybackRate(int frequency_hz) override; |
| rtc::ArrayView<std::unique_ptr<AudioEncoder>> ReclaimContainedEncoders() |
| override; |
| void OnReceivedUplinkPacketLossFraction( |
| float uplink_packet_loss_fraction) override; |
| void OnReceivedUplinkRecoverablePacketLossFraction( |
| float uplink_recoverable_packet_loss_fraction) override; |
| void OnReceivedUplinkBandwidth( |
| int target_audio_bitrate_bps, |
| absl::optional<int64_t> bwe_period_ms) override; |
| |
| protected: |
| EncodedInfo EncodeImpl(uint32_t rtp_timestamp, |
| rtc::ArrayView<const int16_t> audio, |
| rtc::Buffer* encoded) override; |
| |
| private: |
| std::unique_ptr<AudioEncoder> speech_encoder_; |
| int red_payload_type_; |
| rtc::Buffer secondary_encoded_; |
| EncodedInfoLeaf secondary_info_; |
| RTC_DISALLOW_COPY_AND_ASSIGN(AudioEncoderCopyRed); |
| }; |
| |
| } // namespace webrtc |
| |
| #endif // MODULES_AUDIO_CODING_CODECS_RED_AUDIO_ENCODER_COPY_RED_H_ |