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      1 /*
      2  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 #include "webrtc/test/direct_transport.h"
     11 
     12 #include "testing/gtest/include/gtest/gtest.h"
     13 
     14 #include "webrtc/call.h"
     15 #include "webrtc/system_wrappers/interface/clock.h"
     16 
     17 namespace webrtc {
     18 namespace test {
     19 
     20 DirectTransport::DirectTransport()
     21     : lock_(CriticalSectionWrapper::CreateCriticalSection()),
     22       packet_event_(EventWrapper::Create()),
     23       thread_(ThreadWrapper::CreateThread(NetworkProcess, this)),
     24       clock_(Clock::GetRealTimeClock()),
     25       shutting_down_(false),
     26       fake_network_(FakeNetworkPipe::Config()) {
     27   unsigned int thread_id;
     28   EXPECT_TRUE(thread_->Start(thread_id));
     29 }
     30 
     31 DirectTransport::DirectTransport(
     32     const FakeNetworkPipe::Config& config)
     33     : lock_(CriticalSectionWrapper::CreateCriticalSection()),
     34       packet_event_(EventWrapper::Create()),
     35       thread_(ThreadWrapper::CreateThread(NetworkProcess, this)),
     36       clock_(Clock::GetRealTimeClock()),
     37       shutting_down_(false),
     38       fake_network_(config) {
     39   unsigned int thread_id;
     40   EXPECT_TRUE(thread_->Start(thread_id));
     41 }
     42 
     43 DirectTransport::~DirectTransport() { StopSending(); }
     44 
     45 void DirectTransport::SetConfig(const FakeNetworkPipe::Config& config) {
     46   fake_network_.SetConfig(config);
     47 }
     48 
     49 void DirectTransport::StopSending() {
     50   {
     51     CriticalSectionScoped crit_(lock_.get());
     52     shutting_down_ = true;
     53   }
     54 
     55   packet_event_->Set();
     56   EXPECT_TRUE(thread_->Stop());
     57 }
     58 
     59 void DirectTransport::SetReceiver(PacketReceiver* receiver) {
     60   fake_network_.SetReceiver(receiver);
     61 }
     62 
     63 bool DirectTransport::SendRtp(const uint8_t* data, size_t length) {
     64   fake_network_.SendPacket(data, length);
     65   packet_event_->Set();
     66   return true;
     67 }
     68 
     69 bool DirectTransport::SendRtcp(const uint8_t* data, size_t length) {
     70   fake_network_.SendPacket(data, length);
     71   packet_event_->Set();
     72   return true;
     73 }
     74 
     75 bool DirectTransport::NetworkProcess(void* transport) {
     76   return static_cast<DirectTransport*>(transport)->SendPackets();
     77 }
     78 
     79 bool DirectTransport::SendPackets() {
     80   fake_network_.Process();
     81   int wait_time_ms = fake_network_.TimeUntilNextProcess();
     82   if (wait_time_ms > 0) {
     83     switch (packet_event_->Wait(wait_time_ms)) {
     84       case kEventSignaled:
     85         packet_event_->Reset();
     86         break;
     87       case kEventTimeout:
     88         break;
     89       case kEventError:
     90         // TODO(pbos): Log a warning here?
     91         return true;
     92     }
     93   }
     94   CriticalSectionScoped crit(lock_.get());
     95   return shutting_down_ ? false : true;
     96 }
     97 }  // namespace test
     98 }  // namespace webrtc
     99