Reland of Initialize/configure video encoders asychronously.

webrtc/video/video_send_stream_tests.cc

 /*
  *  Copyright (c) 2013 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 <algorithm>  // max
@@ skipping 1094 matching lines @@
     bool bitrate_capped_;
   } test;
 
   RunBaseTest(&test);
 }
 
 TEST_F(VideoSendStreamTest, CanReconfigureToUseStartBitrateAbovePreviousMax) {
   class StartBitrateObserver : public test::FakeEncoder {
    public:
     StartBitrateObserver()
-        : FakeEncoder(Clock::GetRealTimeClock()), start_bitrate_kbps_(0) {}
+        : FakeEncoder(Clock::GetRealTimeClock()),
+          start_bitrate_changed_(false, false),
+          start_bitrate_kbps_(0) {}
     int32_t InitEncode(const VideoCodec* config,
                        int32_t number_of_cores,
                        size_t max_payload_size) override {
       rtc::CritScope lock(&crit_);
       start_bitrate_kbps_ = config->startBitrate;
+      start_bitrate_changed_.Set();
       return FakeEncoder::InitEncode(config, number_of_cores, max_payload_size);
     }
 
     int32_t SetRates(uint32_t new_target_bitrate, uint32_t framerate) override {
       rtc::CritScope lock(&crit_);
       start_bitrate_kbps_ = new_target_bitrate;
+      start_bitrate_changed_.Set();
       return FakeEncoder::SetRates(new_target_bitrate, framerate);
     }
 
     int GetStartBitrateKbps() const {
       rtc::CritScope lock(&crit_);
       return start_bitrate_kbps_;
     }
 
+    bool WaitForStartBitrate() {
+      return start_bitrate_changed_.Wait(
+          VideoSendStreamTest::kDefaultTimeoutMs);
+    }
+
    private:
     rtc::CriticalSection crit_;
+    rtc::Event start_bitrate_changed_;
     int start_bitrate_kbps_ GUARDED_BY(crit_);
   };
 
   CreateSenderCall(Call::Config());
 
   test::NullTransport transport;
   CreateSendConfig(1, 0, &transport);
 
   Call::Config::BitrateConfig bitrate_config;
   bitrate_config.start_bitrate_bps =
       2 * video_encoder_config_.streams[0].max_bitrate_bps;
   sender_call_->SetBitrateConfig(bitrate_config);
 
   StartBitrateObserver encoder;
   video_send_config_.encoder_settings.encoder = &encoder;
 
   CreateVideoStreams();
 
+  EXPECT_TRUE(encoder.WaitForStartBitrate());
   EXPECT_EQ(video_encoder_config_.streams[0].max_bitrate_bps / 1000,
             encoder.GetStartBitrateKbps());
 
   video_encoder_config_.streams[0].max_bitrate_bps =
       2 * bitrate_config.start_bitrate_bps;
   video_send_stream_->ReconfigureVideoEncoder(video_encoder_config_);
 
   // New bitrate should be reconfigured above the previous max. As there's no
   // network connection this shouldn't be flaky, as no bitrate should've been
   // reported in between.
+  EXPECT_TRUE(encoder.WaitForStartBitrate());
   EXPECT_EQ(bitrate_config.start_bitrate_bps / 1000,
             encoder.GetStartBitrateKbps());
 
   DestroyStreams();
 }
 
 TEST_F(VideoSendStreamTest, CapturesTextureAndVideoFrames) {
   class FrameObserver : public rtc::VideoSinkInterface<VideoFrame> {
    public:
     FrameObserver() : output_frame_event_(false, false) {}
@@ skipping 157 matching lines @@
     }
 
     int32_t SetRates(uint32_t newBitRate, uint32_t frameRate) override {
       EXPECT_TRUE(IsReadyForEncode());
       return 0;
     }
 
     void OnVideoStreamsCreated(
         VideoSendStream* send_stream,
         const std::vector<VideoReceiveStream*>& receive_streams) override {
-      // Encoder initialization should be done in stream construction before
-      // starting.
-      EXPECT_TRUE(IsReadyForEncode());
       stream_ = send_stream;
     }
 
     void ModifyVideoConfigs(
         VideoSendStream::Config* send_config,
         std::vector<VideoReceiveStream::Config>* receive_configs,
         VideoEncoderConfig* encoder_config) override {
       send_config->encoder_settings.encoder = this;
       encoder_config_ = *encoder_config;
     }
@@ skipping 27 matching lines @@
   EXPECT_EQ(1u, test_encoder.num_releases());
 }
 
 TEST_F(VideoSendStreamTest, EncoderSetupPropagatesCommonEncoderConfigValues) {
   class VideoCodecConfigObserver : public test::SendTest,
                                    public test::FakeEncoder {
    public:
     VideoCodecConfigObserver()
         : SendTest(kDefaultTimeoutMs),
           FakeEncoder(Clock::GetRealTimeClock()),
+          init_encode_event_(false, false),
           num_initializations_(0) {}
 
    private:
     void ModifyVideoConfigs(
         VideoSendStream::Config* send_config,
         std::vector<VideoReceiveStream::Config>* receive_configs,
         VideoEncoderConfig* encoder_config) override {
       send_config->encoder_settings.encoder = this;
       encoder_config_ = *encoder_config;
     }
 
     void OnVideoStreamsCreated(
         VideoSendStream* send_stream,
         const std::vector<VideoReceiveStream*>& receive_streams) override {
       stream_ = send_stream;
     }
 
     int32_t InitEncode(const VideoCodec* config,
                        int32_t number_of_cores,
                        size_t max_payload_size) override {
       if (num_initializations_ == 0) {
         // Verify default values.
         EXPECT_EQ(kRealtimeVideo, config->mode);
       } else {
         // Verify that changed values are propagated.
         EXPECT_EQ(kScreensharing, config->mode);
       }
       ++num_initializations_;
+      init_encode_event_.Set();
       return FakeEncoder::InitEncode(config, number_of_cores, max_payload_size);
     }
 
     void PerformTest() override {
+      EXPECT_TRUE(init_encode_event_.Wait(kDefaultTimeoutMs));
       EXPECT_EQ(1u, num_initializations_) << "VideoEncoder not initialized.";
 
       encoder_config_.content_type = VideoEncoderConfig::ContentType::kScreen;
       stream_->ReconfigureVideoEncoder(encoder_config_);
+      EXPECT_TRUE(init_encode_event_.Wait(kDefaultTimeoutMs));
       EXPECT_EQ(2u, num_initializations_)
           << "ReconfigureVideoEncoder did not reinitialize the encoder with "
              "new encoder settings.";
     }
 
+    rtc::Event init_encode_event_;
     size_t num_initializations_;
     VideoSendStream* stream_;
     VideoEncoderConfig encoder_config_;
   } test;
 
   RunBaseTest(&test);
 }
 
 static const size_t kVideoCodecConfigObserverNumberOfTemporalLayers = 4;
 template <typename T>
 class VideoCodecConfigObserver : public test::SendTest,
                                  public test::FakeEncoder {
  public:
   VideoCodecConfigObserver(VideoCodecType video_codec_type,
                            const char* codec_name)
       : SendTest(VideoSendStreamTest::kDefaultTimeoutMs),
         FakeEncoder(Clock::GetRealTimeClock()),
         video_codec_type_(video_codec_type),
         codec_name_(codec_name),
+        init_encode_event_(false, false),
         num_initializations_(0) {
     memset(&encoder_settings_, 0, sizeof(encoder_settings_));
   }
 
  private:
   void ModifyVideoConfigs(
       VideoSendStream::Config* send_config,
       std::vector<VideoReceiveStream::Config>* receive_configs,
       VideoEncoderConfig* encoder_config) override {
     send_config->encoder_settings.encoder = this;
@@ skipping 13 matching lines @@
       const std::vector<VideoReceiveStream*>& receive_streams) override {
     stream_ = send_stream;
   }
 
   int32_t InitEncode(const VideoCodec* config,
                      int32_t number_of_cores,
                      size_t max_payload_size) override {
     EXPECT_EQ(video_codec_type_, config->codecType);
     VerifyCodecSpecifics(*config);
     ++num_initializations_;
+    init_encode_event_.Set();
     return FakeEncoder::InitEncode(config, number_of_cores, max_payload_size);
   }
 
   void VerifyCodecSpecifics(const VideoCodec& config) const;
 
   void PerformTest() override {
-    EXPECT_EQ(1u, num_initializations_) << "VideoEncoder not initialized.";
+    EXPECT_TRUE(
+        init_encode_event_.Wait(VideoSendStreamTest::kDefaultTimeoutMs));
+    ASSERT_EQ(1u, num_initializations_) << "VideoEncoder not initialized.";
 
     encoder_settings_.frameDroppingOn = true;
     stream_->ReconfigureVideoEncoder(encoder_config_);
+    ASSERT_TRUE(
+        init_encode_event_.Wait(VideoSendStreamTest::kDefaultTimeoutMs));
     EXPECT_EQ(2u, num_initializations_)
         << "ReconfigureVideoEncoder did not reinitialize the encoder with "
            "new encoder settings.";
   }
 
   int32_t Encode(const VideoFrame& input_image,
                  const CodecSpecificInfo* codec_specific_info,
                  const std::vector<FrameType>* frame_types) override {
     // Silently skip the encode, FakeEncoder::Encode doesn't produce VP8.
     return 0;
   }
 
   T encoder_settings_;
   const VideoCodecType video_codec_type_;
   const char* const codec_name_;
+  rtc::Event init_encode_event_;
   size_t num_initializations_;
   VideoSendStream* stream_;
   VideoEncoderConfig encoder_config_;
 };
 
 template <>
 void VideoCodecConfigObserver<VideoCodecH264>::VerifyCodecSpecifics(
     const VideoCodec& config) const {
   EXPECT_EQ(0, memcmp(&config.codecSpecific.H264, &encoder_settings_,
                       sizeof(encoder_settings_)));
@@ skipping 168 matching lines @@
   static const int kLowerMaxBitrateKbps = 312;
   static const int kMaxBitrateKbps = 413;
   static const int kIncreasedStartBitrateKbps = 451;
   static const int kIncreasedMaxBitrateKbps = 597;
   class EncoderBitrateThresholdObserver : public test::SendTest,
                                           public test::FakeEncoder {
    public:
     EncoderBitrateThresholdObserver()
         : SendTest(kDefaultTimeoutMs),
           FakeEncoder(Clock::GetRealTimeClock()),
+          init_encode_event_(false, false),
           num_initializations_(0) {}
 
    private:
     int32_t InitEncode(const VideoCodec* codecSettings,
                        int32_t numberOfCores,
                        size_t maxPayloadSize) override {
       if (num_initializations_ == 0) {
         EXPECT_EQ(static_cast<unsigned int>(kMinBitrateKbps),
                   codecSettings->minBitrate);
         EXPECT_EQ(static_cast<unsigned int>(kStartBitrateKbps),
                   codecSettings->startBitrate);
         EXPECT_EQ(static_cast<unsigned int>(kMaxBitrateKbps),
                   codecSettings->maxBitrate);
         observation_complete_.Set();
       } else if (num_initializations_ == 1) {
         EXPECT_EQ(static_cast<unsigned int>(kLowerMaxBitrateKbps),
                   codecSettings->maxBitrate);
         // The start bitrate should be kept (-1) and capped to the max bitrate.
         // Since this is not an end-to-end call no receiver should have been
         // returning a REMB that could lower this estimate.
         EXPECT_EQ(codecSettings->startBitrate, codecSettings->maxBitrate);
       } else if (num_initializations_ == 2) {
         EXPECT_EQ(static_cast<unsigned int>(kIncreasedMaxBitrateKbps),
                   codecSettings->maxBitrate);
         EXPECT_EQ(static_cast<unsigned int>(kIncreasedStartBitrateKbps),
                   codecSettings->startBitrate);
       }
       ++num_initializations_;
+      init_encode_event_.Set();
       return FakeEncoder::InitEncode(codecSettings, numberOfCores,
                                      maxPayloadSize);
     }
 
     Call::Config GetSenderCallConfig() override {
       Call::Config config;
       config.bitrate_config.min_bitrate_bps = kMinBitrateKbps * 1000;
       config.bitrate_config.start_bitrate_bps = kStartBitrateKbps * 1000;
       config.bitrate_config.max_bitrate_bps = kMaxBitrateKbps * 1000;
       return config;
@@ skipping 15 matching lines @@
       call_ = sender_call;
     }
 
     void OnVideoStreamsCreated(
         VideoSendStream* send_stream,
         const std::vector<VideoReceiveStream*>& receive_streams) override {
       send_stream_ = send_stream;
     }
 
     void PerformTest() override {
+      ASSERT_TRUE(
+          init_encode_event_.Wait(VideoSendStreamTest::kDefaultTimeoutMs))
+          << "Timed out while waiting encoder to be configured.";
       Call::Config::BitrateConfig bitrate_config;
       bitrate_config.start_bitrate_bps = kIncreasedStartBitrateKbps * 1000;
       bitrate_config.max_bitrate_bps = kIncreasedMaxBitrateKbps * 1000;
       call_->SetBitrateConfig(bitrate_config);
       EXPECT_TRUE(Wait())
           << "Timed out while waiting encoder to be configured.";
       encoder_config_.streams[0].min_bitrate_bps = 0;
       encoder_config_.streams[0].max_bitrate_bps = kLowerMaxBitrateKbps * 1000;
       send_stream_->ReconfigureVideoEncoder(encoder_config_);
+      ASSERT_TRUE(
+          init_encode_event_.Wait(VideoSendStreamTest::kDefaultTimeoutMs));
       EXPECT_EQ(2, num_initializations_)
           << "Encoder should have been reconfigured with the new value.";
       encoder_config_.streams[0].target_bitrate_bps =
           encoder_config_.streams[0].min_bitrate_bps;
       encoder_config_.streams[0].max_bitrate_bps =
           kIncreasedMaxBitrateKbps * 1000;
       send_stream_->ReconfigureVideoEncoder(encoder_config_);
+      ASSERT_TRUE(
+          init_encode_event_.Wait(VideoSendStreamTest::kDefaultTimeoutMs));
       EXPECT_EQ(3, num_initializations_)
           << "Encoder should have been reconfigured with the new value.";
     }
 
+    rtc::Event init_encode_event_;
     int num_initializations_;
     webrtc::Call* call_;
     webrtc::VideoSendStream* send_stream_;
     webrtc::VideoEncoderConfig encoder_config_;
   } test;
 
   RunBaseTest(&test);
 }
 
 TEST_F(VideoSendStreamTest, ReportsSentResolution) {
@@ skipping 481 matching lines @@
         observation_complete_.Set();
       }
     }
   } test;
 
   RunBaseTest(&test);
 }
 #endif
 
 }  // namespace webrtc