461 lines
14 KiB
C++
461 lines
14 KiB
C++
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <memory>
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#include <string>
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#include "webrtc/base/copyonwritebuffer.h"
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#include "webrtc/base/gunit.h"
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#include "webrtc/base/helpers.h"
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#include "webrtc/base/ssladapter.h"
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#include "webrtc/base/timing.h"
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#include "webrtc/media/base/fakenetworkinterface.h"
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#include "webrtc/media/base/mediaconstants.h"
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#include "webrtc/media/base/rtpdataengine.h"
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#include "webrtc/media/base/rtputils.h"
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class FakeTiming : public rtc::Timing {
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public:
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FakeTiming() : now_(0.0) {}
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virtual double TimerNow() {
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return now_;
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}
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void set_now(double now) {
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now_ = now;
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}
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private:
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double now_;
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};
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class FakeDataReceiver : public sigslot::has_slots<> {
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public:
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FakeDataReceiver() : has_received_data_(false) {}
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void OnDataReceived(
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const cricket::ReceiveDataParams& params,
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const char* data, size_t len) {
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has_received_data_ = true;
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last_received_data_ = std::string(data, len);
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last_received_data_len_ = len;
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last_received_data_params_ = params;
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}
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bool has_received_data() const { return has_received_data_; }
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std::string last_received_data() const { return last_received_data_; }
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size_t last_received_data_len() const { return last_received_data_len_; }
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cricket::ReceiveDataParams last_received_data_params() const {
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return last_received_data_params_;
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}
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private:
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bool has_received_data_;
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std::string last_received_data_;
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size_t last_received_data_len_;
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cricket::ReceiveDataParams last_received_data_params_;
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};
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class RtpDataMediaChannelTest : public testing::Test {
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protected:
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virtual void SetUp() {
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// Seed needed for each test to satisfy expectations.
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iface_.reset(new cricket::FakeNetworkInterface());
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timing_ = new FakeTiming();
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dme_.reset(CreateEngine(timing_));
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receiver_.reset(new FakeDataReceiver());
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}
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void SetNow(double now) {
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timing_->set_now(now);
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}
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cricket::RtpDataEngine* CreateEngine(FakeTiming* timing) {
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cricket::RtpDataEngine* dme = new cricket::RtpDataEngine();
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dme->SetTiming(timing);
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return dme;
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}
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cricket::RtpDataMediaChannel* CreateChannel() {
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return CreateChannel(dme_.get());
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}
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cricket::RtpDataMediaChannel* CreateChannel(cricket::RtpDataEngine* dme) {
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cricket::RtpDataMediaChannel* channel =
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static_cast<cricket::RtpDataMediaChannel*>(dme->CreateChannel(
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cricket::DCT_RTP));
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channel->SetInterface(iface_.get());
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channel->SignalDataReceived.connect(
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receiver_.get(), &FakeDataReceiver::OnDataReceived);
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return channel;
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}
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FakeDataReceiver* receiver() {
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return receiver_.get();
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}
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bool HasReceivedData() {
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return receiver_->has_received_data();
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}
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std::string GetReceivedData() {
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return receiver_->last_received_data();
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}
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size_t GetReceivedDataLen() {
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return receiver_->last_received_data_len();
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}
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cricket::ReceiveDataParams GetReceivedDataParams() {
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return receiver_->last_received_data_params();
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}
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bool HasSentData(int count) {
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return (iface_->NumRtpPackets() > count);
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}
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std::string GetSentData(int index) {
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// Assume RTP header of length 12
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std::unique_ptr<const rtc::CopyOnWriteBuffer> packet(
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iface_->GetRtpPacket(index));
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if (packet->size() > 12) {
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return std::string(packet->data<char>() + 12, packet->size() - 12);
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} else {
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return "";
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}
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}
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cricket::RtpHeader GetSentDataHeader(int index) {
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std::unique_ptr<const rtc::CopyOnWriteBuffer> packet(
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iface_->GetRtpPacket(index));
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cricket::RtpHeader header;
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GetRtpHeader(packet->data(), packet->size(), &header);
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return header;
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}
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private:
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std::unique_ptr<cricket::RtpDataEngine> dme_;
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// Timing passed into dme_. Owned by dme_;
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FakeTiming* timing_;
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std::unique_ptr<cricket::FakeNetworkInterface> iface_;
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std::unique_ptr<FakeDataReceiver> receiver_;
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};
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TEST_F(RtpDataMediaChannelTest, SetUnknownCodecs) {
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std::unique_ptr<cricket::RtpDataMediaChannel> dmc(CreateChannel());
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cricket::DataCodec known_codec;
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known_codec.id = 103;
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known_codec.name = "google-data";
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cricket::DataCodec unknown_codec;
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unknown_codec.id = 104;
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unknown_codec.name = "unknown-data";
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cricket::DataSendParameters send_parameters_known;
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send_parameters_known.codecs.push_back(known_codec);
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cricket::DataRecvParameters recv_parameters_known;
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recv_parameters_known.codecs.push_back(known_codec);
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cricket::DataSendParameters send_parameters_unknown;
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send_parameters_unknown.codecs.push_back(unknown_codec);
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cricket::DataRecvParameters recv_parameters_unknown;
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recv_parameters_unknown.codecs.push_back(unknown_codec);
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cricket::DataSendParameters send_parameters_mixed;
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send_parameters_mixed.codecs.push_back(known_codec);
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send_parameters_mixed.codecs.push_back(unknown_codec);
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cricket::DataRecvParameters recv_parameters_mixed;
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recv_parameters_mixed.codecs.push_back(known_codec);
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recv_parameters_mixed.codecs.push_back(unknown_codec);
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EXPECT_TRUE(dmc->SetSendParameters(send_parameters_known));
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EXPECT_FALSE(dmc->SetSendParameters(send_parameters_unknown));
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EXPECT_TRUE(dmc->SetSendParameters(send_parameters_mixed));
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EXPECT_TRUE(dmc->SetRecvParameters(recv_parameters_known));
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EXPECT_FALSE(dmc->SetRecvParameters(recv_parameters_unknown));
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EXPECT_FALSE(dmc->SetRecvParameters(recv_parameters_mixed));
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}
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TEST_F(RtpDataMediaChannelTest, AddRemoveSendStream) {
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std::unique_ptr<cricket::RtpDataMediaChannel> dmc(CreateChannel());
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cricket::StreamParams stream1;
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stream1.add_ssrc(41);
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EXPECT_TRUE(dmc->AddSendStream(stream1));
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cricket::StreamParams stream2;
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stream2.add_ssrc(42);
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EXPECT_TRUE(dmc->AddSendStream(stream2));
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EXPECT_TRUE(dmc->RemoveSendStream(41));
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EXPECT_TRUE(dmc->RemoveSendStream(42));
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EXPECT_FALSE(dmc->RemoveSendStream(43));
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}
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TEST_F(RtpDataMediaChannelTest, AddRemoveRecvStream) {
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std::unique_ptr<cricket::RtpDataMediaChannel> dmc(CreateChannel());
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cricket::StreamParams stream1;
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stream1.add_ssrc(41);
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EXPECT_TRUE(dmc->AddRecvStream(stream1));
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cricket::StreamParams stream2;
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stream2.add_ssrc(42);
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EXPECT_TRUE(dmc->AddRecvStream(stream2));
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EXPECT_FALSE(dmc->AddRecvStream(stream2));
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EXPECT_TRUE(dmc->RemoveRecvStream(41));
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EXPECT_TRUE(dmc->RemoveRecvStream(42));
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}
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TEST_F(RtpDataMediaChannelTest, SendData) {
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std::unique_ptr<cricket::RtpDataMediaChannel> dmc(CreateChannel());
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cricket::SendDataParams params;
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params.ssrc = 42;
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unsigned char data[] = "food";
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rtc::CopyOnWriteBuffer payload(data, 4);
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unsigned char padded_data[] = {
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0x00, 0x00, 0x00, 0x00,
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'f', 'o', 'o', 'd',
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};
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cricket::SendDataResult result;
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// Not sending
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EXPECT_FALSE(dmc->SendData(params, payload, &result));
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EXPECT_EQ(cricket::SDR_ERROR, result);
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EXPECT_FALSE(HasSentData(0));
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ASSERT_TRUE(dmc->SetSend(true));
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// Unknown stream name.
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EXPECT_FALSE(dmc->SendData(params, payload, &result));
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EXPECT_EQ(cricket::SDR_ERROR, result);
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EXPECT_FALSE(HasSentData(0));
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cricket::StreamParams stream;
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stream.add_ssrc(42);
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ASSERT_TRUE(dmc->AddSendStream(stream));
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// Unknown codec;
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EXPECT_FALSE(dmc->SendData(params, payload, &result));
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EXPECT_EQ(cricket::SDR_ERROR, result);
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EXPECT_FALSE(HasSentData(0));
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cricket::DataCodec codec;
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codec.id = 103;
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codec.name = cricket::kGoogleRtpDataCodecName;
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cricket::DataSendParameters parameters;
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parameters.codecs.push_back(codec);
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ASSERT_TRUE(dmc->SetSendParameters(parameters));
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// Length too large;
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std::string x10000(10000, 'x');
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EXPECT_FALSE(dmc->SendData(
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params, rtc::CopyOnWriteBuffer(x10000.data(), x10000.length()), &result));
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EXPECT_EQ(cricket::SDR_ERROR, result);
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EXPECT_FALSE(HasSentData(0));
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// Finally works!
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EXPECT_TRUE(dmc->SendData(params, payload, &result));
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EXPECT_EQ(cricket::SDR_SUCCESS, result);
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ASSERT_TRUE(HasSentData(0));
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EXPECT_EQ(sizeof(padded_data), GetSentData(0).length());
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EXPECT_EQ(0, memcmp(
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padded_data, GetSentData(0).data(), sizeof(padded_data)));
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cricket::RtpHeader header0 = GetSentDataHeader(0);
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EXPECT_NE(0, header0.seq_num);
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EXPECT_NE(0U, header0.timestamp);
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EXPECT_EQ(header0.ssrc, 42U);
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EXPECT_EQ(header0.payload_type, 103);
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// Should bump timestamp by 180000 because the clock rate is 90khz.
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SetNow(2);
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EXPECT_TRUE(dmc->SendData(params, payload, &result));
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ASSERT_TRUE(HasSentData(1));
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EXPECT_EQ(sizeof(padded_data), GetSentData(1).length());
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EXPECT_EQ(0, memcmp(
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padded_data, GetSentData(1).data(), sizeof(padded_data)));
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cricket::RtpHeader header1 = GetSentDataHeader(1);
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EXPECT_EQ(header1.ssrc, 42U);
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EXPECT_EQ(header1.payload_type, 103);
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EXPECT_EQ(static_cast<uint16_t>(header0.seq_num + 1),
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static_cast<uint16_t>(header1.seq_num));
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EXPECT_EQ(header0.timestamp + 180000, header1.timestamp);
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}
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TEST_F(RtpDataMediaChannelTest, SendDataMultipleClocks) {
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// Timings owned by RtpDataEngines.
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FakeTiming* timing1 = new FakeTiming();
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std::unique_ptr<cricket::RtpDataEngine> dme1(CreateEngine(timing1));
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std::unique_ptr<cricket::RtpDataMediaChannel> dmc1(
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CreateChannel(dme1.get()));
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FakeTiming* timing2 = new FakeTiming();
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std::unique_ptr<cricket::RtpDataEngine> dme2(CreateEngine(timing2));
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std::unique_ptr<cricket::RtpDataMediaChannel> dmc2(
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CreateChannel(dme2.get()));
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ASSERT_TRUE(dmc1->SetSend(true));
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ASSERT_TRUE(dmc2->SetSend(true));
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cricket::StreamParams stream1;
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stream1.add_ssrc(41);
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ASSERT_TRUE(dmc1->AddSendStream(stream1));
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cricket::StreamParams stream2;
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stream2.add_ssrc(42);
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ASSERT_TRUE(dmc2->AddSendStream(stream2));
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cricket::DataCodec codec;
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codec.id = 103;
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codec.name = cricket::kGoogleRtpDataCodecName;
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cricket::DataSendParameters parameters;
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parameters.codecs.push_back(codec);
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ASSERT_TRUE(dmc1->SetSendParameters(parameters));
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ASSERT_TRUE(dmc2->SetSendParameters(parameters));
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cricket::SendDataParams params1;
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params1.ssrc = 41;
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cricket::SendDataParams params2;
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params2.ssrc = 42;
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unsigned char data[] = "foo";
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rtc::CopyOnWriteBuffer payload(data, 3);
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cricket::SendDataResult result;
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EXPECT_TRUE(dmc1->SendData(params1, payload, &result));
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EXPECT_TRUE(dmc2->SendData(params2, payload, &result));
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// Should bump timestamp by 90000 because the clock rate is 90khz.
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timing1->set_now(1);
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// Should bump timestamp by 180000 because the clock rate is 90khz.
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timing2->set_now(2);
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EXPECT_TRUE(dmc1->SendData(params1, payload, &result));
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EXPECT_TRUE(dmc2->SendData(params2, payload, &result));
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ASSERT_TRUE(HasSentData(3));
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cricket::RtpHeader header1a = GetSentDataHeader(0);
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cricket::RtpHeader header2a = GetSentDataHeader(1);
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cricket::RtpHeader header1b = GetSentDataHeader(2);
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cricket::RtpHeader header2b = GetSentDataHeader(3);
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EXPECT_EQ(static_cast<uint16_t>(header1a.seq_num + 1),
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static_cast<uint16_t>(header1b.seq_num));
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EXPECT_EQ(header1a.timestamp + 90000, header1b.timestamp);
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EXPECT_EQ(static_cast<uint16_t>(header2a.seq_num + 1),
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static_cast<uint16_t>(header2b.seq_num));
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EXPECT_EQ(header2a.timestamp + 180000, header2b.timestamp);
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}
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TEST_F(RtpDataMediaChannelTest, SendDataRate) {
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std::unique_ptr<cricket::RtpDataMediaChannel> dmc(CreateChannel());
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ASSERT_TRUE(dmc->SetSend(true));
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cricket::DataCodec codec;
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codec.id = 103;
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codec.name = cricket::kGoogleRtpDataCodecName;
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cricket::DataSendParameters parameters;
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parameters.codecs.push_back(codec);
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ASSERT_TRUE(dmc->SetSendParameters(parameters));
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cricket::StreamParams stream;
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stream.add_ssrc(42);
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ASSERT_TRUE(dmc->AddSendStream(stream));
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cricket::SendDataParams params;
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params.ssrc = 42;
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unsigned char data[] = "food";
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rtc::CopyOnWriteBuffer payload(data, 4);
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cricket::SendDataResult result;
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// With rtp overhead of 32 bytes, each one of our packets is 36
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// bytes, or 288 bits. So, a limit of 872bps will allow 3 packets,
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// but not four.
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parameters.max_bandwidth_bps = 872;
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ASSERT_TRUE(dmc->SetSendParameters(parameters));
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EXPECT_TRUE(dmc->SendData(params, payload, &result));
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EXPECT_TRUE(dmc->SendData(params, payload, &result));
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EXPECT_TRUE(dmc->SendData(params, payload, &result));
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EXPECT_FALSE(dmc->SendData(params, payload, &result));
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EXPECT_FALSE(dmc->SendData(params, payload, &result));
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SetNow(0.9);
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EXPECT_FALSE(dmc->SendData(params, payload, &result));
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SetNow(1.1);
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EXPECT_TRUE(dmc->SendData(params, payload, &result));
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EXPECT_TRUE(dmc->SendData(params, payload, &result));
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SetNow(1.9);
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EXPECT_TRUE(dmc->SendData(params, payload, &result));
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SetNow(2.2);
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EXPECT_TRUE(dmc->SendData(params, payload, &result));
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EXPECT_TRUE(dmc->SendData(params, payload, &result));
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EXPECT_TRUE(dmc->SendData(params, payload, &result));
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EXPECT_FALSE(dmc->SendData(params, payload, &result));
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}
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TEST_F(RtpDataMediaChannelTest, ReceiveData) {
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// PT= 103, SN=2, TS=3, SSRC = 4, data = "abcde"
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unsigned char data[] = {
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0x80, 0x67, 0x00, 0x02, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x2A,
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0x00, 0x00, 0x00, 0x00,
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'a', 'b', 'c', 'd', 'e'
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};
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rtc::CopyOnWriteBuffer packet(data, sizeof(data));
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std::unique_ptr<cricket::RtpDataMediaChannel> dmc(CreateChannel());
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// SetReceived not called.
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dmc->OnPacketReceived(&packet, rtc::PacketTime());
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EXPECT_FALSE(HasReceivedData());
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dmc->SetReceive(true);
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// Unknown payload id
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dmc->OnPacketReceived(&packet, rtc::PacketTime());
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EXPECT_FALSE(HasReceivedData());
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cricket::DataCodec codec;
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codec.id = 103;
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codec.name = cricket::kGoogleRtpDataCodecName;
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cricket::DataRecvParameters parameters;
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parameters.codecs.push_back(codec);
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ASSERT_TRUE(dmc->SetRecvParameters(parameters));
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// Unknown stream
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dmc->OnPacketReceived(&packet, rtc::PacketTime());
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EXPECT_FALSE(HasReceivedData());
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cricket::StreamParams stream;
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stream.add_ssrc(42);
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ASSERT_TRUE(dmc->AddRecvStream(stream));
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// Finally works!
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dmc->OnPacketReceived(&packet, rtc::PacketTime());
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EXPECT_TRUE(HasReceivedData());
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EXPECT_EQ("abcde", GetReceivedData());
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EXPECT_EQ(5U, GetReceivedDataLen());
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}
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TEST_F(RtpDataMediaChannelTest, InvalidRtpPackets) {
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unsigned char data[] = {
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0x80, 0x65, 0x00, 0x02
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};
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rtc::CopyOnWriteBuffer packet(data, sizeof(data));
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std::unique_ptr<cricket::RtpDataMediaChannel> dmc(CreateChannel());
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// Too short
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dmc->OnPacketReceived(&packet, rtc::PacketTime());
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EXPECT_FALSE(HasReceivedData());
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}
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