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/*
* Copyright 2017 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 "ortc/ortcfactory.h"
#include <sstream>
#include <utility> // For std::move.
#include <vector>
#include "api/mediastreamtrackproxy.h"
#include "api/proxy.h"
#include "api/rtcerror.h"
#include "api/videosourceproxy.h"
#include "logging/rtc_event_log/rtc_event_log.h"
#include "media/base/mediaconstants.h"
#include "media/base/rtpdataengine.h"
#include "modules/audio_processing/include/audio_processing.h"
#include "ortc/ortcrtpreceiveradapter.h"
#include "ortc/ortcrtpsenderadapter.h"
#include "ortc/rtpparametersconversion.h"
#include "ortc/rtptransportadapter.h"
#include "ortc/rtptransportcontrolleradapter.h"
#include "p2p/base/basicpacketsocketfactory.h"
#include "p2p/base/udptransport.h"
#include "pc/audiotrack.h"
#include "pc/channelmanager.h"
#include "pc/localaudiosource.h"
#include "pc/videotrack.h"
#include "rtc_base/asyncpacketsocket.h"
#include "rtc_base/bind.h"
#include "rtc_base/checks.h"
#include "rtc_base/helpers.h"
#include "rtc_base/logging.h"
#include "rtc_base/ptr_util.h"
namespace {
const int kDefaultRtcpCnameLength = 16;
// Asserts that all of the built-in capabilities can be converted to
// RtpCapabilities. If they can't, something's wrong (for example, maybe a new
// feedback mechanism is supported, but an enum value wasn't added to
// rtpparameters.h).
template <typename C>
webrtc::RtpCapabilities ToRtpCapabilitiesWithAsserts(
const std::vector<C>& cricket_codecs,
const cricket::RtpHeaderExtensions& cricket_extensions) {
webrtc::RtpCapabilities capabilities =
webrtc::ToRtpCapabilities(cricket_codecs, cricket_extensions);
RTC_DCHECK_EQ(capabilities.codecs.size(), cricket_codecs.size());
for (size_t i = 0; i < capabilities.codecs.size(); ++i) {
RTC_DCHECK_EQ(capabilities.codecs[i].rtcp_feedback.size(),
cricket_codecs[i].feedback_params.params().size());
}
RTC_DCHECK_EQ(capabilities.header_extensions.size(),
cricket_extensions.size());
return capabilities;
}
} // namespace
namespace webrtc {
// Note that this proxy class uses the network thread as the "worker" thread.
BEGIN_OWNED_PROXY_MAP(OrtcFactory)
PROXY_SIGNALING_THREAD_DESTRUCTOR()
PROXY_METHOD0(RTCErrorOr<std::unique_ptr<RtpTransportControllerInterface>>,
CreateRtpTransportController)
PROXY_METHOD4(RTCErrorOr<std::unique_ptr<RtpTransportInterface>>,
CreateRtpTransport,
const RtpTransportParameters&,
PacketTransportInterface*,
PacketTransportInterface*,
RtpTransportControllerInterface*)
PROXY_METHOD4(RTCErrorOr<std::unique_ptr<SrtpTransportInterface>>,
CreateSrtpTransport,
const RtpTransportParameters&,
PacketTransportInterface*,
PacketTransportInterface*,
RtpTransportControllerInterface*)
PROXY_CONSTMETHOD1(RtpCapabilities,
GetRtpSenderCapabilities,
cricket::MediaType)
PROXY_METHOD2(RTCErrorOr<std::unique_ptr<OrtcRtpSenderInterface>>,
CreateRtpSender,
rtc::scoped_refptr<MediaStreamTrackInterface>,
RtpTransportInterface*)
PROXY_METHOD2(RTCErrorOr<std::unique_ptr<OrtcRtpSenderInterface>>,
CreateRtpSender,
cricket::MediaType,
RtpTransportInterface*)
PROXY_CONSTMETHOD1(RtpCapabilities,
GetRtpReceiverCapabilities,
cricket::MediaType)
PROXY_METHOD2(RTCErrorOr<std::unique_ptr<OrtcRtpReceiverInterface>>,
CreateRtpReceiver,
cricket::MediaType,
RtpTransportInterface*)
PROXY_WORKER_METHOD3(RTCErrorOr<std::unique_ptr<UdpTransportInterface>>,
CreateUdpTransport,
int,
uint16_t,
uint16_t)
PROXY_METHOD1(rtc::scoped_refptr<AudioSourceInterface>,
CreateAudioSource,
const cricket::AudioOptions&)
PROXY_METHOD2(rtc::scoped_refptr<VideoTrackInterface>,
CreateVideoTrack,
const std::string&,
VideoTrackSourceInterface*)
PROXY_METHOD2(rtc::scoped_refptr<AudioTrackInterface>,
CreateAudioTrack,
const std::string&,
AudioSourceInterface*)
END_PROXY_MAP()
// static
RTCErrorOr<std::unique_ptr<OrtcFactoryInterface>> OrtcFactory::Create(
rtc::Thread* network_thread,
rtc::Thread* signaling_thread,
rtc::NetworkManager* network_manager,
rtc::PacketSocketFactory* socket_factory,
AudioDeviceModule* adm,
std::unique_ptr<cricket::MediaEngineInterface> media_engine,
rtc::scoped_refptr<AudioEncoderFactory> audio_encoder_factory,
rtc::scoped_refptr<AudioDecoderFactory> audio_decoder_factory) {
// Hop to signaling thread if needed.
if (signaling_thread && !signaling_thread->IsCurrent()) {
return signaling_thread
->Invoke<RTCErrorOr<std::unique_ptr<OrtcFactoryInterface>>>(
RTC_FROM_HERE,
rtc::Bind(&OrtcFactory::Create_s, network_thread, signaling_thread,
network_manager, socket_factory, adm,
media_engine.release(), audio_encoder_factory,
audio_decoder_factory));
}
return Create_s(network_thread, signaling_thread, network_manager,
socket_factory, adm, media_engine.release(),
audio_encoder_factory, audio_decoder_factory);
}
RTCErrorOr<std::unique_ptr<OrtcFactoryInterface>> OrtcFactoryInterface::Create(
rtc::Thread* network_thread,
rtc::Thread* signaling_thread,
rtc::NetworkManager* network_manager,
rtc::PacketSocketFactory* socket_factory,
AudioDeviceModule* adm,
rtc::scoped_refptr<AudioEncoderFactory> audio_encoder_factory,
rtc::scoped_refptr<AudioDecoderFactory> audio_decoder_factory) {
return OrtcFactory::Create(network_thread, signaling_thread, network_manager,
socket_factory, adm, nullptr,
audio_encoder_factory, audio_decoder_factory);
}
OrtcFactory::OrtcFactory(
rtc::Thread* network_thread,
rtc::Thread* signaling_thread,
rtc::NetworkManager* network_manager,
rtc::PacketSocketFactory* socket_factory,
AudioDeviceModule* adm,
rtc::scoped_refptr<AudioEncoderFactory> audio_encoder_factory,
rtc::scoped_refptr<AudioDecoderFactory> audio_decoder_factory)
: network_thread_(network_thread),
signaling_thread_(signaling_thread),
network_manager_(network_manager),
socket_factory_(socket_factory),
adm_(adm),
null_event_log_(RtcEventLog::CreateNull()),
audio_encoder_factory_(audio_encoder_factory),
audio_decoder_factory_(audio_decoder_factory) {
if (!rtc::CreateRandomString(kDefaultRtcpCnameLength, &default_cname_)) {
RTC_LOG(LS_ERROR) << "Failed to generate CNAME?";
RTC_NOTREACHED();
}
if (!network_thread_) {
owned_network_thread_ = rtc::Thread::CreateWithSocketServer();
owned_network_thread_->Start();
network_thread_ = owned_network_thread_.get();
}
// The worker thread is created internally because it's an implementation
// detail, and consumers of the API don't need to really know about it.
worker_thread_ = rtc::Thread::Create();
worker_thread_->SetName("ORTC-worker", this);
worker_thread_->Start();
if (signaling_thread_) {
RTC_DCHECK_RUN_ON(signaling_thread_);
} else {
signaling_thread_ = rtc::Thread::Current();
if (!signaling_thread_) {
// If this thread isn't already wrapped by an rtc::Thread, create a
// wrapper and own it in this class.
signaling_thread_ = rtc::ThreadManager::Instance()->WrapCurrentThread();
wraps_signaling_thread_ = true;
}
}
if (signaling_thread_->name().empty()) {
signaling_thread_->SetName("ORTC-signaling", this);
}
if (!network_manager_) {
owned_network_manager_.reset(new rtc::BasicNetworkManager());
network_manager_ = owned_network_manager_.get();
}
if (!socket_factory_) {
owned_socket_factory_.reset(
new rtc::BasicPacketSocketFactory(network_thread_));
socket_factory_ = owned_socket_factory_.get();
}
}
OrtcFactory::~OrtcFactory() {
RTC_DCHECK_RUN_ON(signaling_thread_);
if (wraps_signaling_thread_) {
rtc::ThreadManager::Instance()->UnwrapCurrentThread();
}
}
RTCErrorOr<std::unique_ptr<RtpTransportControllerInterface>>
OrtcFactory::CreateRtpTransportController() {
RTC_DCHECK_RUN_ON(signaling_thread_);
return RtpTransportControllerAdapter::CreateProxied(
cricket::MediaConfig(), channel_manager_.get(), null_event_log_.get(),
signaling_thread_, worker_thread_.get());
}
RTCErrorOr<std::unique_ptr<RtpTransportInterface>>
OrtcFactory::CreateRtpTransport(
const RtpTransportParameters& parameters,
PacketTransportInterface* rtp,
PacketTransportInterface* rtcp,
RtpTransportControllerInterface* transport_controller) {
RTC_DCHECK_RUN_ON(signaling_thread_);
RtpTransportParameters copied_parameters = parameters;
if (copied_parameters.rtcp.cname.empty()) {
copied_parameters.rtcp.cname = default_cname_;
}
if (transport_controller) {
return transport_controller->GetInternal()->CreateProxiedRtpTransport(
copied_parameters, rtp, rtcp);
} else {
// If |transport_controller| is null, create one automatically, which the
// returned RtpTransport will own.
auto controller_result = CreateRtpTransportController();
if (!controller_result.ok()) {
return controller_result.MoveError();
}
auto controller = controller_result.MoveValue();
auto transport_result =
controller->GetInternal()->CreateProxiedRtpTransport(copied_parameters,
rtp, rtcp);
// If RtpTransport was successfully created, transfer ownership of
// |rtp_transport_controller|. Otherwise it will go out of scope and be
// deleted automatically.
if (transport_result.ok()) {
transport_result.value()
->GetInternal()
->TakeOwnershipOfRtpTransportController(std::move(controller));
}
return transport_result;
}
}
RTCErrorOr<std::unique_ptr<SrtpTransportInterface>>
OrtcFactory::CreateSrtpTransport(
const RtpTransportParameters& parameters,
PacketTransportInterface* rtp,
PacketTransportInterface* rtcp,
RtpTransportControllerInterface* transport_controller) {
RTC_DCHECK_RUN_ON(signaling_thread_);
RtpTransportParameters copied_parameters = parameters;
if (copied_parameters.rtcp.cname.empty()) {
copied_parameters.rtcp.cname = default_cname_;
}
if (transport_controller) {
return transport_controller->GetInternal()->CreateProxiedSrtpTransport(
copied_parameters, rtp, rtcp);
} else {
// If |transport_controller| is null, create one automatically, which the
// returned SrtpTransport will own.
auto controller_result = CreateRtpTransportController();
if (!controller_result.ok()) {
return controller_result.MoveError();
}
auto controller = controller_result.MoveValue();
auto transport_result =
controller->GetInternal()->CreateProxiedSrtpTransport(copied_parameters,
rtp, rtcp);
// If SrtpTransport was successfully created, transfer ownership of
// |rtp_transport_controller|. Otherwise it will go out of scope and be
// deleted automatically.
if (transport_result.ok()) {
transport_result.value()
->GetInternal()
->TakeOwnershipOfRtpTransportController(std::move(controller));
}
return transport_result;
}
}
RtpCapabilities OrtcFactory::GetRtpSenderCapabilities(
cricket::MediaType kind) const {
RTC_DCHECK_RUN_ON(signaling_thread_);
switch (kind) {
case cricket::MEDIA_TYPE_AUDIO: {
cricket::AudioCodecs cricket_codecs;
cricket::RtpHeaderExtensions cricket_extensions;
channel_manager_->GetSupportedAudioSendCodecs(&cricket_codecs);
channel_manager_->GetSupportedAudioRtpHeaderExtensions(
&cricket_extensions);
return ToRtpCapabilitiesWithAsserts(cricket_codecs, cricket_extensions);
}
case cricket::MEDIA_TYPE_VIDEO: {
cricket::VideoCodecs cricket_codecs;
cricket::RtpHeaderExtensions cricket_extensions;
channel_manager_->GetSupportedVideoCodecs(&cricket_codecs);
channel_manager_->GetSupportedVideoRtpHeaderExtensions(
&cricket_extensions);
return ToRtpCapabilitiesWithAsserts(cricket_codecs, cricket_extensions);
}
case cricket::MEDIA_TYPE_DATA:
return RtpCapabilities();
}
// Not reached; avoids compile warning.
FATAL();
}
RTCErrorOr<std::unique_ptr<OrtcRtpSenderInterface>>
OrtcFactory::CreateRtpSender(
rtc::scoped_refptr<MediaStreamTrackInterface> track,
RtpTransportInterface* transport) {
RTC_DCHECK_RUN_ON(signaling_thread_);
if (!track) {
LOG_AND_RETURN_ERROR(RTCErrorType::INVALID_PARAMETER,
"Cannot pass null track into CreateRtpSender.");
}
auto result =
CreateRtpSender(cricket::MediaTypeFromString(track->kind()), transport);
if (!result.ok()) {
return result;
}
auto err = result.value()->SetTrack(track);
if (!err.ok()) {
return std::move(err);
}
return result;
}
RTCErrorOr<std::unique_ptr<OrtcRtpSenderInterface>>
OrtcFactory::CreateRtpSender(cricket::MediaType kind,
RtpTransportInterface* transport) {
RTC_DCHECK_RUN_ON(signaling_thread_);
if (kind == cricket::MEDIA_TYPE_DATA) {
LOG_AND_RETURN_ERROR(RTCErrorType::INVALID_PARAMETER,
"Cannot create data RtpSender.");
}
if (!transport) {
LOG_AND_RETURN_ERROR(RTCErrorType::INVALID_PARAMETER,
"Cannot pass null transport into CreateRtpSender.");
}
return transport->GetInternal()
->rtp_transport_controller()
->CreateProxiedRtpSender(kind, transport);
}
RtpCapabilities OrtcFactory::GetRtpReceiverCapabilities(
cricket::MediaType kind) const {
RTC_DCHECK_RUN_ON(signaling_thread_);
switch (kind) {
case cricket::MEDIA_TYPE_AUDIO: {
cricket::AudioCodecs cricket_codecs;
cricket::RtpHeaderExtensions cricket_extensions;
channel_manager_->GetSupportedAudioReceiveCodecs(&cricket_codecs);
channel_manager_->GetSupportedAudioRtpHeaderExtensions(
&cricket_extensions);
return ToRtpCapabilitiesWithAsserts(cricket_codecs, cricket_extensions);
}
case cricket::MEDIA_TYPE_VIDEO: {
cricket::VideoCodecs cricket_codecs;
cricket::RtpHeaderExtensions cricket_extensions;
channel_manager_->GetSupportedVideoCodecs(&cricket_codecs);
channel_manager_->GetSupportedVideoRtpHeaderExtensions(
&cricket_extensions);
return ToRtpCapabilitiesWithAsserts(cricket_codecs, cricket_extensions);
}
case cricket::MEDIA_TYPE_DATA:
return RtpCapabilities();
}
// Not reached; avoids compile warning.
FATAL();
}
RTCErrorOr<std::unique_ptr<OrtcRtpReceiverInterface>>
OrtcFactory::CreateRtpReceiver(cricket::MediaType kind,
RtpTransportInterface* transport) {
RTC_DCHECK_RUN_ON(signaling_thread_);
if (kind == cricket::MEDIA_TYPE_DATA) {
LOG_AND_RETURN_ERROR(RTCErrorType::INVALID_PARAMETER,
"Cannot create data RtpReceiver.");
}
if (!transport) {
LOG_AND_RETURN_ERROR(RTCErrorType::INVALID_PARAMETER,
"Cannot pass null transport into CreateRtpReceiver.");
}
return transport->GetInternal()
->rtp_transport_controller()
->CreateProxiedRtpReceiver(kind, transport);
}
// UdpTransport expects all methods to be called on one thread, which needs to
// be the network thread, since that's where its socket can safely be used. So
// return a proxy to the created UdpTransport.
BEGIN_OWNED_PROXY_MAP(UdpTransport)
PROXY_WORKER_THREAD_DESTRUCTOR()
PROXY_WORKER_CONSTMETHOD0(rtc::SocketAddress, GetLocalAddress)
PROXY_WORKER_METHOD1(bool, SetRemoteAddress, const rtc::SocketAddress&)
PROXY_WORKER_CONSTMETHOD0(rtc::SocketAddress, GetRemoteAddress)
protected:
rtc::PacketTransportInternal* GetInternal() override {
return internal();
}
END_PROXY_MAP()
RTCErrorOr<std::unique_ptr<UdpTransportInterface>>
OrtcFactory::CreateUdpTransport(int family,
uint16_t min_port,
uint16_t max_port) {
RTC_DCHECK_RUN_ON(network_thread_);
if (family != AF_INET && family != AF_INET6) {
LOG_AND_RETURN_ERROR(RTCErrorType::INVALID_PARAMETER,
"Address family must be AF_INET or AF_INET6.");
}
if (min_port > max_port) {
LOG_AND_RETURN_ERROR(RTCErrorType::INVALID_RANGE,
"Port range invalid; minimum port must be less than "
"or equal to max port.");
}
std::unique_ptr<rtc::AsyncPacketSocket> socket(
socket_factory_->CreateUdpSocket(
rtc::SocketAddress(rtc::GetAnyIP(family), 0), min_port, max_port));
if (!socket) {
// Only log at warning level, because this method may be called with
// specific port ranges to determine if a port is available, expecting the
// possibility of an error.
LOG_AND_RETURN_ERROR_EX(RTCErrorType::RESOURCE_EXHAUSTED,
"Local socket allocation failure.", LS_WARNING);
}
RTC_LOG(LS_INFO) << "Created UDP socket with address "
<< socket->GetLocalAddress().ToSensitiveString() << ".";
// Make a unique debug name (for logging/diagnostics only).
std::ostringstream oss;
static int udp_id = 0;
oss << "udp" << udp_id++;
return UdpTransportProxyWithInternal<cricket::UdpTransport>::Create(
signaling_thread_, network_thread_,
std::unique_ptr<cricket::UdpTransport>(
new cricket::UdpTransport(oss.str(), std::move(socket))));
}
rtc::scoped_refptr<AudioSourceInterface> OrtcFactory::CreateAudioSource(
const cricket::AudioOptions& options) {
RTC_DCHECK_RUN_ON(signaling_thread_);
return rtc::scoped_refptr<LocalAudioSource>(
LocalAudioSource::Create(&options));
}
rtc::scoped_refptr<VideoTrackInterface> OrtcFactory::CreateVideoTrack(
const std::string& id,
VideoTrackSourceInterface* source) {
RTC_DCHECK_RUN_ON(signaling_thread_);
rtc::scoped_refptr<VideoTrackInterface> track(
VideoTrack::Create(id, source, worker_thread_.get()));
return VideoTrackProxy::Create(signaling_thread_, worker_thread_.get(),
track);
}
rtc::scoped_refptr<AudioTrackInterface> OrtcFactory::CreateAudioTrack(
const std::string& id,
AudioSourceInterface* source) {
RTC_DCHECK_RUN_ON(signaling_thread_);
rtc::scoped_refptr<AudioTrackInterface> track(AudioTrack::Create(id, source));
return AudioTrackProxy::Create(signaling_thread_, track);
}
// static
RTCErrorOr<std::unique_ptr<OrtcFactoryInterface>> OrtcFactory::Create_s(
rtc::Thread* network_thread,
rtc::Thread* signaling_thread,
rtc::NetworkManager* network_manager,
rtc::PacketSocketFactory* socket_factory,
AudioDeviceModule* adm,
cricket::MediaEngineInterface* media_engine,
rtc::scoped_refptr<AudioEncoderFactory> audio_encoder_factory,
rtc::scoped_refptr<AudioDecoderFactory> audio_decoder_factory) {
// Add the unique_ptr wrapper back.
std::unique_ptr<cricket::MediaEngineInterface> owned_media_engine(
media_engine);
std::unique_ptr<OrtcFactory> new_factory(new OrtcFactory(
network_thread, signaling_thread, network_manager, socket_factory, adm,
audio_encoder_factory, audio_decoder_factory));
RTCError err = new_factory->Initialize(std::move(owned_media_engine));
if (!err.ok()) {
return std::move(err);
}
// Return a proxy so that any calls on the returned object (including
// destructor) happen on the signaling thread.
rtc::Thread* signaling = new_factory->signaling_thread();
rtc::Thread* network = new_factory->network_thread();
return OrtcFactoryProxy::Create(signaling, network, std::move(new_factory));
}
RTCError OrtcFactory::Initialize(
std::unique_ptr<cricket::MediaEngineInterface> media_engine) {
RTC_DCHECK_RUN_ON(signaling_thread_);
// TODO(deadbeef): Get rid of requirement to hop to worker thread here.
if (!media_engine) {
media_engine =
worker_thread_->Invoke<std::unique_ptr<cricket::MediaEngineInterface>>(
RTC_FROM_HERE, rtc::Bind(&OrtcFactory::CreateMediaEngine_w, this));
}
channel_manager_.reset(new cricket::ChannelManager(
std::move(media_engine), rtc::MakeUnique<cricket::RtpDataEngine>(),
worker_thread_.get(), network_thread_));
channel_manager_->SetVideoRtxEnabled(true);
if (!channel_manager_->Init()) {
LOG_AND_RETURN_ERROR(RTCErrorType::INTERNAL_ERROR,
"Failed to initialize ChannelManager.");
}
return RTCError::OK();
}
std::unique_ptr<cricket::MediaEngineInterface>
OrtcFactory::CreateMediaEngine_w() {
RTC_DCHECK_RUN_ON(worker_thread_.get());
// The null arguments are optional factories that could be passed into the
// OrtcFactory, but aren't yet.
//
// Note that |adm_| may be null, in which case the platform-specific default
// AudioDeviceModule will be used.
return std::unique_ptr<cricket::MediaEngineInterface>(
cricket::WebRtcMediaEngineFactory::Create(
adm_, audio_encoder_factory_, audio_decoder_factory_, nullptr,
nullptr, nullptr, webrtc::AudioProcessingBuilder().Create()));
}
} // namespace webrtc