blob: 66305e6ab96a694e3629d589b324f582d798d249 [file] [log] [blame]
* 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.
#include <memory>
#include <vector>
#include "webrtc/api/audio_codecs/audio_encoder.h"
#include "webrtc/common_audio/vad/include/vad.h"
#include "webrtc/modules/audio_coding/codecs/cng/webrtc_cng.h"
#include "webrtc/rtc_base/constructormagic.h"
namespace webrtc {
class Vad;
class AudioEncoderCng final : public AudioEncoder {
struct Config {
bool IsOk() const;
size_t num_channels = 1;
int payload_type = 13;
std::unique_ptr<AudioEncoder> speech_encoder;
Vad::Aggressiveness vad_mode = Vad::kVadNormal;
int sid_frame_interval_ms = 100;
int num_cng_coefficients = 8;
// The Vad pointer is mainly for testing. If a NULL pointer is passed, the
// AudioEncoderCng creates (and destroys) a Vad object internally. If an
// object is passed, the AudioEncoderCng assumes ownership of the Vad
// object.
Vad* vad = nullptr;
explicit AudioEncoderCng(Config&& config);
~AudioEncoderCng() 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 EncodeImpl(uint32_t rtp_timestamp,
rtc::ArrayView<const int16_t> audio,
rtc::Buffer* 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;
rtc::ArrayView<std::unique_ptr<AudioEncoder>> ReclaimContainedEncoders()
void OnReceivedUplinkPacketLossFraction(
float uplink_packet_loss_fraction) override;
void OnReceivedUplinkRecoverablePacketLossFraction(
float uplink_recoverable_packet_loss_fraction) override;
void OnReceivedUplinkBandwidth(
int target_audio_bitrate_bps,
rtc::Optional<int64_t> bwe_period_ms) override;
EncodedInfo EncodePassive(size_t frames_to_encode,
rtc::Buffer* encoded);
EncodedInfo EncodeActive(size_t frames_to_encode,
rtc::Buffer* encoded);
size_t SamplesPer10msFrame() const;
std::unique_ptr<AudioEncoder> speech_encoder_;
const int cng_payload_type_;
const int num_cng_coefficients_;
const int sid_frame_interval_ms_;
std::vector<int16_t> speech_buffer_;
std::vector<uint32_t> rtp_timestamps_;
bool last_frame_active_;
std::unique_ptr<Vad> vad_;
std::unique_ptr<ComfortNoiseEncoder> cng_encoder_;
} // namespace webrtc