blob: d5d00acb49315436eb2f54643bb6e2d8582e397c [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 <vector>
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/common_audio/vad/include/vad.h"
#include "webrtc/modules/audio_coding/codecs/audio_encoder.h"
#include "webrtc/modules/audio_coding/codecs/cng/webrtc_cng.h"
namespace webrtc {
// Deleter for use with scoped_ptr.
struct CngInstDeleter {
void operator()(CNG_enc_inst* ptr) const { WebRtcCng_FreeEnc(ptr); }
class Vad;
class AudioEncoderCng final : public AudioEncoder {
struct Config {
bool IsOk() const;
int num_channels = 1;
int payload_type = 13;
// Caller keeps ownership of the AudioEncoder object.
AudioEncoder* speech_encoder = nullptr;
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(const Config& config);
~AudioEncoderCng() override;
size_t MaxEncodedBytes() const override;
int SampleRateHz() const override;
int 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;
EncodedInfo EncodePassive(size_t frames_to_encode,
size_t max_encoded_bytes,
uint8_t* encoded);
EncodedInfo EncodeActive(size_t frames_to_encode,
size_t max_encoded_bytes,
uint8_t* encoded);
size_t SamplesPer10msFrame() const;
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_;
rtc::scoped_ptr<Vad> vad_;
rtc::scoped_ptr<CNG_enc_inst, CngInstDeleter> cng_inst_;
} // namespace webrtc