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/*
* Copyright 2008 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 "pc/channel_manager.h"
#include <memory>
#include "api/rtc_error.h"
#include "api/transport/media/media_transport_config.h"
#include "api/video/builtin_video_bitrate_allocator_factory.h"
#include "media/base/fake_media_engine.h"
#include "media/base/test_utils.h"
#include "media/engine/fake_webrtc_call.h"
#include "p2p/base/dtls_transport_internal.h"
#include "p2p/base/fake_dtls_transport.h"
#include "p2p/base/p2p_constants.h"
#include "p2p/base/packet_transport_internal.h"
#include "pc/dtls_srtp_transport.h"
#include "rtc_base/checks.h"
#include "rtc_base/thread.h"
#include "test/gtest.h"
namespace {
const bool kDefaultSrtpRequired = true;
}
namespace cricket {
static const AudioCodec kAudioCodecs[] = {
AudioCodec(97, "voice", 1, 2, 3),
AudioCodec(111, "OPUS", 48000, 32000, 2),
};
static const VideoCodec kVideoCodecs[] = {
VideoCodec(99, "H264"),
VideoCodec(100, "VP8"),
VideoCodec(96, "rtx"),
};
class ChannelManagerTest : public ::testing::Test {
protected:
ChannelManagerTest()
: network_(rtc::Thread::CreateWithSocketServer()),
worker_(rtc::Thread::Create()),
video_bitrate_allocator_factory_(
webrtc::CreateBuiltinVideoBitrateAllocatorFactory()),
fme_(new cricket::FakeMediaEngine()),
fdme_(new cricket::FakeDataEngine()),
cm_(new cricket::ChannelManager(
std::unique_ptr<MediaEngineInterface>(fme_),
std::unique_ptr<DataEngineInterface>(fdme_),
rtc::Thread::Current(),
rtc::Thread::Current())),
fake_call_() {
fme_->SetAudioCodecs(MAKE_VECTOR(kAudioCodecs));
fme_->SetVideoCodecs(MAKE_VECTOR(kVideoCodecs));
}
std::unique_ptr<webrtc::RtpTransportInternal> CreateDtlsSrtpTransport() {
rtp_dtls_transport_ = std::make_unique<FakeDtlsTransport>(
"fake_dtls_transport", cricket::ICE_CANDIDATE_COMPONENT_RTP);
auto dtls_srtp_transport = std::make_unique<webrtc::DtlsSrtpTransport>(
/*rtcp_mux_required=*/true);
dtls_srtp_transport->SetDtlsTransports(rtp_dtls_transport_.get(),
/*rtcp_dtls_transport=*/nullptr);
return dtls_srtp_transport;
}
void TestCreateDestroyChannels(
webrtc::RtpTransportInternal* rtp_transport,
webrtc::MediaTransportConfig media_transport_config) {
cricket::VoiceChannel* voice_channel = cm_->CreateVoiceChannel(
&fake_call_, cricket::MediaConfig(), rtp_transport,
media_transport_config, rtc::Thread::Current(), cricket::CN_AUDIO,
kDefaultSrtpRequired, webrtc::CryptoOptions(), &ssrc_generator_,
AudioOptions());
EXPECT_TRUE(voice_channel != nullptr);
cricket::VideoChannel* video_channel = cm_->CreateVideoChannel(
&fake_call_, cricket::MediaConfig(), rtp_transport,
media_transport_config, rtc::Thread::Current(), cricket::CN_VIDEO,
kDefaultSrtpRequired, webrtc::CryptoOptions(), &ssrc_generator_,
VideoOptions(), video_bitrate_allocator_factory_.get());
EXPECT_TRUE(video_channel != nullptr);
cricket::RtpDataChannel* rtp_data_channel = cm_->CreateRtpDataChannel(
cricket::MediaConfig(), rtp_transport, rtc::Thread::Current(),
cricket::CN_DATA, kDefaultSrtpRequired, webrtc::CryptoOptions(),
&ssrc_generator_);
EXPECT_TRUE(rtp_data_channel != nullptr);
cm_->DestroyVideoChannel(video_channel);
cm_->DestroyVoiceChannel(voice_channel);
cm_->DestroyRtpDataChannel(rtp_data_channel);
cm_->Terminate();
}
std::unique_ptr<DtlsTransportInternal> rtp_dtls_transport_;
std::unique_ptr<rtc::Thread> network_;
std::unique_ptr<rtc::Thread> worker_;
std::unique_ptr<webrtc::VideoBitrateAllocatorFactory>
video_bitrate_allocator_factory_;
// |fme_| and |fdme_| are actually owned by |cm_|.
cricket::FakeMediaEngine* fme_;
cricket::FakeDataEngine* fdme_;
std::unique_ptr<cricket::ChannelManager> cm_;
cricket::FakeCall fake_call_;
rtc::UniqueRandomIdGenerator ssrc_generator_;
};
// Test that we startup/shutdown properly.
TEST_F(ChannelManagerTest, StartupShutdown) {
EXPECT_FALSE(cm_->initialized());
EXPECT_EQ(rtc::Thread::Current(), cm_->worker_thread());
EXPECT_TRUE(cm_->Init());
EXPECT_TRUE(cm_->initialized());
cm_->Terminate();
EXPECT_FALSE(cm_->initialized());
}
// Test that we startup/shutdown properly with a worker thread.
TEST_F(ChannelManagerTest, StartupShutdownOnThread) {
network_->Start();
worker_->Start();
EXPECT_FALSE(cm_->initialized());
EXPECT_EQ(rtc::Thread::Current(), cm_->worker_thread());
EXPECT_TRUE(cm_->set_network_thread(network_.get()));
EXPECT_EQ(network_.get(), cm_->network_thread());
EXPECT_TRUE(cm_->set_worker_thread(worker_.get()));
EXPECT_EQ(worker_.get(), cm_->worker_thread());
EXPECT_TRUE(cm_->Init());
EXPECT_TRUE(cm_->initialized());
// Setting the network or worker thread while initialized should fail.
EXPECT_FALSE(cm_->set_network_thread(rtc::Thread::Current()));
EXPECT_FALSE(cm_->set_worker_thread(rtc::Thread::Current()));
cm_->Terminate();
EXPECT_FALSE(cm_->initialized());
}
TEST_F(ChannelManagerTest, SetVideoRtxEnabled) {
std::vector<VideoCodec> send_codecs;
std::vector<VideoCodec> recv_codecs;
const VideoCodec rtx_codec(96, "rtx");
// By default RTX is disabled.
cm_->GetSupportedVideoSendCodecs(&send_codecs);
EXPECT_FALSE(ContainsMatchingCodec(send_codecs, rtx_codec));
cm_->GetSupportedVideoSendCodecs(&recv_codecs);
EXPECT_FALSE(ContainsMatchingCodec(recv_codecs, rtx_codec));
// Enable and check.
EXPECT_TRUE(cm_->SetVideoRtxEnabled(true));
cm_->GetSupportedVideoSendCodecs(&send_codecs);
EXPECT_TRUE(ContainsMatchingCodec(send_codecs, rtx_codec));
cm_->GetSupportedVideoSendCodecs(&recv_codecs);
EXPECT_TRUE(ContainsMatchingCodec(recv_codecs, rtx_codec));
// Disable and check.
EXPECT_TRUE(cm_->SetVideoRtxEnabled(false));
cm_->GetSupportedVideoSendCodecs(&send_codecs);
EXPECT_FALSE(ContainsMatchingCodec(send_codecs, rtx_codec));
cm_->GetSupportedVideoSendCodecs(&recv_codecs);
EXPECT_FALSE(ContainsMatchingCodec(recv_codecs, rtx_codec));
// Cannot toggle rtx after initialization.
EXPECT_TRUE(cm_->Init());
EXPECT_FALSE(cm_->SetVideoRtxEnabled(true));
EXPECT_FALSE(cm_->SetVideoRtxEnabled(false));
// Can set again after terminate.
cm_->Terminate();
EXPECT_TRUE(cm_->SetVideoRtxEnabled(true));
cm_->GetSupportedVideoSendCodecs(&send_codecs);
EXPECT_TRUE(ContainsMatchingCodec(send_codecs, rtx_codec));
cm_->GetSupportedVideoSendCodecs(&recv_codecs);
EXPECT_TRUE(ContainsMatchingCodec(recv_codecs, rtx_codec));
}
TEST_F(ChannelManagerTest, CreateDestroyChannels) {
EXPECT_TRUE(cm_->Init());
auto rtp_transport = CreateDtlsSrtpTransport();
TestCreateDestroyChannels(rtp_transport.get(),
webrtc::MediaTransportConfig());
}
TEST_F(ChannelManagerTest, CreateDestroyChannelsOnThread) {
network_->Start();
worker_->Start();
EXPECT_TRUE(cm_->set_worker_thread(worker_.get()));
EXPECT_TRUE(cm_->set_network_thread(network_.get()));
EXPECT_TRUE(cm_->Init());
auto rtp_transport = CreateDtlsSrtpTransport();
TestCreateDestroyChannels(rtp_transport.get(),
webrtc::MediaTransportConfig());
}
} // namespace cricket