blob: 31468303515b836a0bb5ff02950402f0175bd1a1 [file] [log] [blame]
* Copyright (c) 2015 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 <string>
#include <vector>
#include "api/audio_codecs/audio_encoder.h"
#include "audio/channel_send.h"
#include "rtc_base/constructormagic.h"
#include "rtc_base/race_checker.h"
#include "rtc_base/thread_checker.h"
namespace webrtc {
class FrameEncryptorInterface;
class RtcpBandwidthObserver;
class RtpRtcp;
class RtpTransportControllerSendInterface;
class Transport;
namespace voe {
// This class provides the "view" of a voe::Channel that we need to implement
// webrtc::AudioSendStream. It serves two purposes:
// 1. Allow mocking just the interfaces used, instead of the entire
// voe::Channel class.
// 2. Provide a refined interface for the stream classes, including assumptions
// on return values and input adaptation.
class ChannelSendProxy {
explicit ChannelSendProxy(std::unique_ptr<ChannelSend> channel);
virtual ~ChannelSendProxy();
// Shared with ChannelReceiveProxy
virtual void SetLocalSSRC(uint32_t ssrc);
virtual void SetNACKStatus(bool enable, int max_packets);
virtual CallSendStatistics GetRTCPStatistics() const;
virtual void RegisterTransport(Transport* transport);
virtual bool ReceivedRTCPPacket(const uint8_t* packet, size_t length);
virtual bool SetEncoder(int payload_type,
std::unique_ptr<AudioEncoder> encoder);
virtual void ModifyEncoder(
rtc::FunctionView<void(std::unique_ptr<AudioEncoder>*)> modifier);
virtual void SetRTCPStatus(bool enable);
virtual void SetMid(const std::string& mid, int extension_id);
virtual void SetRTCP_CNAME(const std::string& c_name);
virtual void SetExtmapAllowMixed(bool extmap_allow_mixed);
virtual void SetSendAudioLevelIndicationStatus(bool enable, int id);
virtual void EnableSendTransportSequenceNumber(int id);
virtual void RegisterSenderCongestionControlObjects(
RtpTransportControllerSendInterface* transport,
RtcpBandwidthObserver* bandwidth_observer);
virtual void ResetSenderCongestionControlObjects();
virtual std::vector<ReportBlock> GetRemoteRTCPReportBlocks() const;
virtual ANAStats GetANAStatistics() const;
virtual bool SetSendTelephoneEventPayloadType(int payload_type,
int payload_frequency);
virtual bool SendTelephoneEventOutband(int event, int duration_ms);
virtual void SetBitrate(int bitrate_bps, int64_t probing_interval_ms);
virtual int GetBitrate() const;
virtual void SetInputMute(bool muted);
virtual void ProcessAndEncodeAudio(std::unique_ptr<AudioFrame> audio_frame);
virtual void SetTransportOverhead(int transport_overhead_per_packet);
virtual RtpRtcp* GetRtpRtcp() const;
virtual void OnTwccBasedUplinkPacketLossRate(float packet_loss_rate);
virtual void OnRecoverableUplinkPacketLossRate(
float recoverable_packet_loss_rate);
virtual void StartSend();
virtual void StopSend();
// Needed by ChannelReceiveProxy::AssociateSendChannel.
virtual ChannelSend* GetChannel() const;
// E2EE Custom Audio Frame Encryption (Optional)
virtual void SetFrameEncryptor(
rtc::scoped_refptr<FrameEncryptorInterface> frame_encryptor);
// Thread checkers document and lock usage of some methods on voe::Channel to
// specific threads we know about. The goal is to eventually split up
// voe::Channel into parts with single-threaded semantics, and thereby reduce
// the need for locks.
rtc::ThreadChecker worker_thread_checker_;
rtc::ThreadChecker module_process_thread_checker_;
// Methods accessed from audio and video threads are checked for sequential-
// only access. We don't necessarily own and control these threads, so thread
// checkers cannot be used. E.g. Chromium may transfer "ownership" from one
// audio thread to another, but access is still sequential.
rtc::RaceChecker audio_thread_race_checker_;
rtc::RaceChecker video_capture_thread_race_checker_;
std::unique_ptr<ChannelSend> channel_;
} // namespace voe
} // namespace webrtc