modules/video_coding/codecs/av1/libaom_av1_encoder_unittest.cc - src - Git at Google

 /*
  *  Copyright (c) 2020 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 "modules/video_coding/codecs/av1/libaom_av1_encoder.h"

 #include <limits>
 #include <memory>
 #include <vector>

 #include "absl/types/optional.h"
 #include "api/test/create_frame_generator.h"
 #include "api/test/frame_generator_interface.h"
 #include "api/video_codecs/video_codec.h"
 #include "api/video_codecs/video_encoder.h"
 #include "modules/video_coding/codecs/test/encoded_video_frame_producer.h"
 #include "modules/video_coding/include/video_error_codes.h"
 #include "test/field_trial.h"
 #include "test/gmock.h"
 #include "test/gtest.h"

 namespace webrtc {
 namespace {

 using ::testing::ElementsAre;
 using ::testing::Eq;
 using ::testing::Field;
 using ::testing::IsEmpty;
 using ::testing::SizeIs;

 VideoCodec DefaultCodecSettings() {
   VideoCodec codec_settings;
   codec_settings.width = 320;
   codec_settings.height = 180;
   codec_settings.maxFramerate = 30;
   codec_settings.startBitrate = 1000;
   codec_settings.qpMax = 63;
   return codec_settings;
 }

 VideoEncoder::Settings DefaultEncoderSettings() {
   return VideoEncoder::Settings(
       VideoEncoder::Capabilities(/*loss_notification=*/false),
       /*number_of_cores=*/1, /*max_payload_size=*/1200);
 }

 TEST(LibaomAv1EncoderTest, CanCreate) {
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   EXPECT_TRUE(encoder);
 }

 TEST(LibaomAv1EncoderTest, InitAndRelease) {
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   ASSERT_TRUE(encoder);
   VideoCodec codec_settings = DefaultCodecSettings();
   EXPECT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
             WEBRTC_VIDEO_CODEC_OK);
   EXPECT_EQ(encoder->Release(), WEBRTC_VIDEO_CODEC_OK);
 }

 TEST(LibaomAv1EncoderTest, NoBitrateOnTopLayerRefecltedInActiveDecodeTargets) {
   // Configure encoder with 2 temporal layers.
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   VideoCodec codec_settings = DefaultCodecSettings();
   codec_settings.SetScalabilityMode(ScalabilityMode::kL1T2);
   ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
             WEBRTC_VIDEO_CODEC_OK);

   VideoEncoder::RateControlParameters rate_parameters;
   rate_parameters.framerate_fps = 30;
   rate_parameters.bitrate.SetBitrate(0, /*temporal_index=*/0, 300'000);
   rate_parameters.bitrate.SetBitrate(0, /*temporal_index=*/1, 0);
   encoder->SetRates(rate_parameters);

   std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
       EncodedVideoFrameProducer(*encoder).SetNumInputFrames(1).Encode();
   ASSERT_THAT(encoded_frames, SizeIs(1));
   ASSERT_NE(encoded_frames[0].codec_specific_info.generic_frame_info,
             absl::nullopt);
   // Assuming L1T2 structure uses 1st decode target for T0 and 2nd decode target
   // for T0+T1 frames, expect only 1st decode target is active.
   EXPECT_EQ(encoded_frames[0]
                 .codec_specific_info.generic_frame_info->active_decode_targets,
             0b01);
 }

 TEST(LibaomAv1EncoderTest,
      SpatialScalabilityInTemporalUnitReportedAsDeltaFrame) {
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   VideoCodec codec_settings = DefaultCodecSettings();
   codec_settings.SetScalabilityMode(ScalabilityMode::kL2T1);
   ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
             WEBRTC_VIDEO_CODEC_OK);

   VideoEncoder::RateControlParameters rate_parameters;
   rate_parameters.framerate_fps = 30;
   rate_parameters.bitrate.SetBitrate(/*spatial_index=*/0, 0, 300'000);
   rate_parameters.bitrate.SetBitrate(/*spatial_index=*/1, 0, 300'000);
   encoder->SetRates(rate_parameters);

   std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
       EncodedVideoFrameProducer(*encoder).SetNumInputFrames(1).Encode();
   ASSERT_THAT(encoded_frames, SizeIs(2));
   EXPECT_THAT(encoded_frames[0].encoded_image._frameType,
               Eq(VideoFrameType::kVideoFrameKey));
   EXPECT_THAT(encoded_frames[1].encoded_image._frameType,
               Eq(VideoFrameType::kVideoFrameDelta));
 }

 TEST(LibaomAv1EncoderTest, NoBitrateOnTopSpatialLayerProduceDeltaFrames) {
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   VideoCodec codec_settings = DefaultCodecSettings();
   codec_settings.SetScalabilityMode(ScalabilityMode::kL2T1);
   ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
             WEBRTC_VIDEO_CODEC_OK);

   VideoEncoder::RateControlParameters rate_parameters;
   rate_parameters.framerate_fps = 30;
   rate_parameters.bitrate.SetBitrate(/*spatial_index=*/0, 0, 300'000);
   rate_parameters.bitrate.SetBitrate(/*spatial_index=*/1, 0, 0);
   encoder->SetRates(rate_parameters);

   std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
       EncodedVideoFrameProducer(*encoder).SetNumInputFrames(2).Encode();
   ASSERT_THAT(encoded_frames, SizeIs(2));
   EXPECT_THAT(encoded_frames[0].encoded_image._frameType,
               Eq(VideoFrameType::kVideoFrameKey));
   EXPECT_THAT(encoded_frames[1].encoded_image._frameType,
               Eq(VideoFrameType::kVideoFrameDelta));
 }

 TEST(LibaomAv1EncoderTest, SetsEndOfPictureForLastFrameInTemporalUnit) {
   VideoBitrateAllocation allocation;
   allocation.SetBitrate(0, 0, 30000);
   allocation.SetBitrate(1, 0, 40000);
   allocation.SetBitrate(2, 0, 30000);

   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   VideoCodec codec_settings = DefaultCodecSettings();
   // Configure encoder with 3 spatial layers.
   codec_settings.SetScalabilityMode(ScalabilityMode::kL3T1);
   codec_settings.startBitrate = allocation.get_sum_kbps();
   ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
             WEBRTC_VIDEO_CODEC_OK);

   encoder->SetRates(VideoEncoder::RateControlParameters(
       allocation, codec_settings.maxFramerate));

   std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
       EncodedVideoFrameProducer(*encoder).SetNumInputFrames(2).Encode();
   ASSERT_THAT(encoded_frames, SizeIs(6));
   EXPECT_FALSE(encoded_frames[0].codec_specific_info.end_of_picture);
   EXPECT_FALSE(encoded_frames[1].codec_specific_info.end_of_picture);
   EXPECT_TRUE(encoded_frames[2].codec_specific_info.end_of_picture);
   EXPECT_FALSE(encoded_frames[3].codec_specific_info.end_of_picture);
   EXPECT_FALSE(encoded_frames[4].codec_specific_info.end_of_picture);
   EXPECT_TRUE(encoded_frames[5].codec_specific_info.end_of_picture);
 }

 TEST(LibaomAv1EncoderTest, CheckOddDimensionsWithSpatialLayers) {
   VideoBitrateAllocation allocation;
   allocation.SetBitrate(0, 0, 30000);
   allocation.SetBitrate(1, 0, 40000);
   allocation.SetBitrate(2, 0, 30000);
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   VideoCodec codec_settings = DefaultCodecSettings();
   // Configure encoder with 3 spatial layers.
   codec_settings.SetScalabilityMode(ScalabilityMode::kL3T1);
   // Odd width and height values should not make encoder crash.
   codec_settings.width = 623;
   codec_settings.height = 405;
   codec_settings.startBitrate = allocation.get_sum_kbps();
   ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
             WEBRTC_VIDEO_CODEC_OK);
   encoder->SetRates(VideoEncoder::RateControlParameters(
       allocation, codec_settings.maxFramerate));
   EncodedVideoFrameProducer evfp(*encoder);
   evfp.SetResolution(RenderResolution{623, 405});
   std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
       evfp.SetNumInputFrames(2).Encode();
   ASSERT_THAT(encoded_frames, SizeIs(6));
 }

 TEST(LibaomAv1EncoderTest, EncoderInfoWithoutResolutionBitrateLimits) {
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   EXPECT_TRUE(encoder->GetEncoderInfo().resolution_bitrate_limits.empty());
 }

 TEST(LibaomAv1EncoderTest, EncoderInfoWithBitrateLimitsFromFieldTrial) {
   test::ScopedFieldTrials field_trials(
       "WebRTC-Av1-GetEncoderInfoOverride/"
       "frame_size_pixels:123|456|789,"
       "min_start_bitrate_bps:11000|22000|33000,"
       "min_bitrate_bps:44000|55000|66000,"
       "max_bitrate_bps:77000|88000|99000/");
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();

   EXPECT_THAT(
       encoder->GetEncoderInfo().resolution_bitrate_limits,
       ::testing::ElementsAre(
           VideoEncoder::ResolutionBitrateLimits{123, 11000, 44000, 77000},
           VideoEncoder::ResolutionBitrateLimits{456, 22000, 55000, 88000},
           VideoEncoder::ResolutionBitrateLimits{789, 33000, 66000, 99000}));
 }

 TEST(LibaomAv1EncoderTest, EncoderInfoProvidesFpsAllocation) {
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   VideoCodec codec_settings = DefaultCodecSettings();
   codec_settings.SetScalabilityMode(ScalabilityMode::kL3T3);
   codec_settings.maxFramerate = 60;
   ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
             WEBRTC_VIDEO_CODEC_OK);

   const auto& encoder_info = encoder->GetEncoderInfo();
   EXPECT_THAT(encoder_info.fps_allocation[0],
               ElementsAre(255 / 4, 255 / 2, 255));
   EXPECT_THAT(encoder_info.fps_allocation[1],
               ElementsAre(255 / 4, 255 / 2, 255));
   EXPECT_THAT(encoder_info.fps_allocation[2],
               ElementsAre(255 / 4, 255 / 2, 255));
   EXPECT_THAT(encoder_info.fps_allocation[3], IsEmpty());
 }

 TEST(LibaomAv1EncoderTest, PopulatesEncodedFrameSize) {
   VideoBitrateAllocation allocation;
   allocation.SetBitrate(0, 0, 30000);
   allocation.SetBitrate(1, 0, 40000);
   allocation.SetBitrate(2, 0, 30000);
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   VideoCodec codec_settings = DefaultCodecSettings();
   codec_settings.startBitrate = allocation.get_sum_kbps();
   ASSERT_GT(codec_settings.width, 4);
   // Configure encoder with 3 spatial layers.
   codec_settings.SetScalabilityMode(ScalabilityMode::kL3T1);
   ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
             WEBRTC_VIDEO_CODEC_OK);
   encoder->SetRates(VideoEncoder::RateControlParameters(
       allocation, codec_settings.maxFramerate));
   using Frame = EncodedVideoFrameProducer::EncodedFrame;
   std::vector<Frame> encoded_frames =
       EncodedVideoFrameProducer(*encoder).SetNumInputFrames(1).Encode();
   EXPECT_THAT(
       encoded_frames,
       ElementsAre(
           Field(&Frame::encoded_image,
                 AllOf(Field(&EncodedImage::_encodedWidth,
                             codec_settings.width / 4),
                       Field(&EncodedImage::_encodedHeight,
                             codec_settings.height / 4))),
           Field(&Frame::encoded_image,
                 AllOf(Field(&EncodedImage::_encodedWidth,
                             codec_settings.width / 2),
                       Field(&EncodedImage::_encodedHeight,
                             codec_settings.height / 2))),
           Field(&Frame::encoded_image,
                 AllOf(Field(&EncodedImage::_encodedWidth, codec_settings.width),
                       Field(&EncodedImage::_encodedHeight,
                             codec_settings.height)))));
 }

 TEST(LibaomAv1EncoderTest, RtpTimestampWrap) {
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   VideoCodec codec_settings = DefaultCodecSettings();
   codec_settings.SetScalabilityMode(ScalabilityMode::kL1T1);
   ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
             WEBRTC_VIDEO_CODEC_OK);

   VideoEncoder::RateControlParameters rate_parameters;
   rate_parameters.framerate_fps = 30;
   rate_parameters.bitrate.SetBitrate(/*spatial_index=*/0, 0, 300'000);
   encoder->SetRates(rate_parameters);

   std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
       EncodedVideoFrameProducer(*encoder)
           .SetNumInputFrames(2)
           .SetRtpTimestamp(std::numeric_limits<uint32_t>::max())
           .Encode();
   ASSERT_THAT(encoded_frames, SizeIs(2));
   EXPECT_THAT(encoded_frames[0].encoded_image._frameType,
               Eq(VideoFrameType::kVideoFrameKey));
   EXPECT_THAT(encoded_frames[1].encoded_image._frameType,
               Eq(VideoFrameType::kVideoFrameDelta));
 }

 TEST(LibaomAv1EncoderTest, TestCaptureTimeId) {
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   const Timestamp capture_time_id = Timestamp::Micros(2000);
   VideoCodec codec_settings = DefaultCodecSettings();
   codec_settings.SetScalabilityMode(ScalabilityMode::kL2T1);
   ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
             WEBRTC_VIDEO_CODEC_OK);

   VideoEncoder::RateControlParameters rate_parameters;
   rate_parameters.framerate_fps = 30;
   rate_parameters.bitrate.SetBitrate(/*spatial_index=*/0, /*temporal_index=*/0,
                                      300'000);
   rate_parameters.bitrate.SetBitrate(/*spatial_index=*/1, /*temporal_index=*/0,
                                      300'000);
   encoder->SetRates(rate_parameters);

   std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
       EncodedVideoFrameProducer(*encoder)
           .SetNumInputFrames(1)
           .SetCaptureTimeIdentifier(capture_time_id)
           .Encode();
   ASSERT_THAT(encoded_frames, SizeIs(2));
   ASSERT_TRUE(
       encoded_frames[0].encoded_image.CaptureTimeIdentifier().has_value());
   ASSERT_TRUE(
       encoded_frames[1].encoded_image.CaptureTimeIdentifier().has_value());
   EXPECT_EQ(encoded_frames[0].encoded_image.CaptureTimeIdentifier()->us(),
             capture_time_id.us());
   EXPECT_EQ(encoded_frames[1].encoded_image.CaptureTimeIdentifier()->us(),
             capture_time_id.us());
 }

 TEST(LibaomAv1EncoderTest, AdheresToTargetBitrateDespiteUnevenFrameTiming) {
   std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
   VideoCodec codec_settings = DefaultCodecSettings();
   codec_settings.SetScalabilityMode(ScalabilityMode::kL1T1);
   codec_settings.startBitrate = 300;  // kbps
   codec_settings.width = 320;
   codec_settings.height = 180;
   ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
             WEBRTC_VIDEO_CODEC_OK);

   const int kFps = 30;
   const int kTargetBitrateBps = codec_settings.startBitrate * 1000;
   VideoEncoder::RateControlParameters rate_parameters;
   rate_parameters.framerate_fps = kFps;
   rate_parameters.bitrate.SetBitrate(/*spatial_index=*/0, 0, kTargetBitrateBps);
   encoder->SetRates(rate_parameters);

   class EncoderCallback : public EncodedImageCallback {
    public:
     EncoderCallback() = default;
     DataSize BytesEncoded() const { return bytes_encoded_; }

    private:
     Result OnEncodedImage(
         const EncodedImage& encoded_image,
         const CodecSpecificInfo* codec_specific_info) override {
       bytes_encoded_ += DataSize::Bytes(encoded_image.size());
       return Result(Result::Error::OK);
     }

     DataSize bytes_encoded_ = DataSize::Zero();
   } callback;
   encoder->RegisterEncodeCompleteCallback(&callback);

   // Insert frames with too low rtp timestamp delta compared to what is expected
   // based on the framerate, then insert on with 2x the delta it should - making
   // the average correct.
   const uint32_t kHighTimestampDelta =
       static_cast<uint32_t>((90000.0 / kFps) * 2 + 0.5);
   const uint32_t kLowTimestampDelta =
       static_cast<uint32_t>((90000.0 - kHighTimestampDelta) / (kFps - 1));

   std::unique_ptr<test::FrameGeneratorInterface> frame_buffer_generator =
       test::CreateSquareFrameGenerator(
           codec_settings.width, codec_settings.height,
           test::FrameGeneratorInterface::OutputType::kI420, /*num_squares=*/20);

   uint32_t rtp_timestamp = 1000;
   std::vector<VideoFrameType> frame_types = {VideoFrameType::kVideoFrameKey};

   const int kRunTimeSeconds = 3;
   for (int i = 0; i < kRunTimeSeconds; ++i) {
     for (int j = 0; j < kFps; ++j) {
       if (j < kFps - 1) {
         rtp_timestamp += kLowTimestampDelta;
       } else {
         rtp_timestamp += kHighTimestampDelta;
       }
       VideoFrame frame = VideoFrame::Builder()
                              .set_video_frame_buffer(
                                  frame_buffer_generator->NextFrame().buffer)
                              .set_timestamp_rtp(rtp_timestamp)
                              .build();

       RTC_CHECK_EQ(encoder->Encode(frame, &frame_types), WEBRTC_VIDEO_CODEC_OK);
       frame_types[0] = VideoFrameType::kVideoFrameDelta;
     }
   }

   // Expect produced bitrate to match, to within 10%.
   // This catches an issue that was seen when real frame timestamps with jitter
   // was used. It resulted in the overall produced bitrate to be overshot by
   // ~30% even though the averages should have been ok.
   EXPECT_NEAR(
       (callback.BytesEncoded() / TimeDelta::Seconds(kRunTimeSeconds)).bps(),
       kTargetBitrateBps, kTargetBitrateBps / 10);
 }

 }  // namespace
 }  // namespace webrtc
	/*
	* Copyright (c) 2020 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 "modules/video_coding/codecs/av1/libaom_av1_encoder.h"

	#include <limits>
	#include <memory>
	#include <vector>

	#include "absl/types/optional.h"
	#include "api/test/create_frame_generator.h"
	#include "api/test/frame_generator_interface.h"
	#include "api/video_codecs/video_codec.h"
	#include "api/video_codecs/video_encoder.h"
	#include "modules/video_coding/codecs/test/encoded_video_frame_producer.h"
	#include "modules/video_coding/include/video_error_codes.h"
	#include "test/field_trial.h"
	#include "test/gmock.h"
	#include "test/gtest.h"

	namespace webrtc {
	namespace {

	using ::testing::ElementsAre;
	using ::testing::Eq;
	using ::testing::Field;
	using ::testing::IsEmpty;
	using ::testing::SizeIs;

	VideoCodec DefaultCodecSettings() {
	VideoCodec codec_settings;
	codec_settings.width = 320;
	codec_settings.height = 180;
	codec_settings.maxFramerate = 30;
	codec_settings.startBitrate = 1000;
	codec_settings.qpMax = 63;
	return codec_settings;
	}

	VideoEncoder::Settings DefaultEncoderSettings() {
	return VideoEncoder::Settings(
	VideoEncoder::Capabilities(/loss_notification=/false),
	/number_of_cores=/1, /max_payload_size=/1200);
	}

	TEST(LibaomAv1EncoderTest, CanCreate) {
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	EXPECT_TRUE(encoder);
	}

	TEST(LibaomAv1EncoderTest, InitAndRelease) {
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	ASSERT_TRUE(encoder);
	VideoCodec codec_settings = DefaultCodecSettings();
	EXPECT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
	WEBRTC_VIDEO_CODEC_OK);
	EXPECT_EQ(encoder->Release(), WEBRTC_VIDEO_CODEC_OK);
	}

	TEST(LibaomAv1EncoderTest, NoBitrateOnTopLayerRefecltedInActiveDecodeTargets) {
	// Configure encoder with 2 temporal layers.
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	VideoCodec codec_settings = DefaultCodecSettings();
	codec_settings.SetScalabilityMode(ScalabilityMode::kL1T2);
	ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
	WEBRTC_VIDEO_CODEC_OK);

	VideoEncoder::RateControlParameters rate_parameters;
	rate_parameters.framerate_fps = 30;
	rate_parameters.bitrate.SetBitrate(0, /temporal_index=/0, 300'000);
	rate_parameters.bitrate.SetBitrate(0, /temporal_index=/1, 0);
	encoder->SetRates(rate_parameters);

	std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
	EncodedVideoFrameProducer(*encoder).SetNumInputFrames(1).Encode();
	ASSERT_THAT(encoded_frames, SizeIs(1));
	ASSERT_NE(encoded_frames[0].codec_specific_info.generic_frame_info,
	absl::nullopt);
	// Assuming L1T2 structure uses 1st decode target for T0 and 2nd decode target
	// for T0+T1 frames, expect only 1st decode target is active.
	EXPECT_EQ(encoded_frames[0]
	.codec_specific_info.generic_frame_info->active_decode_targets,
	0b01);
	}

	TEST(LibaomAv1EncoderTest,
	SpatialScalabilityInTemporalUnitReportedAsDeltaFrame) {
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	VideoCodec codec_settings = DefaultCodecSettings();
	codec_settings.SetScalabilityMode(ScalabilityMode::kL2T1);
	ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
	WEBRTC_VIDEO_CODEC_OK);

	VideoEncoder::RateControlParameters rate_parameters;
	rate_parameters.framerate_fps = 30;
	rate_parameters.bitrate.SetBitrate(/spatial_index=/0, 0, 300'000);
	rate_parameters.bitrate.SetBitrate(/spatial_index=/1, 0, 300'000);
	encoder->SetRates(rate_parameters);

	std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
	EncodedVideoFrameProducer(*encoder).SetNumInputFrames(1).Encode();
	ASSERT_THAT(encoded_frames, SizeIs(2));
	EXPECT_THAT(encoded_frames[0].encoded_image._frameType,
	Eq(VideoFrameType::kVideoFrameKey));
	EXPECT_THAT(encoded_frames[1].encoded_image._frameType,
	Eq(VideoFrameType::kVideoFrameDelta));
	}

	TEST(LibaomAv1EncoderTest, NoBitrateOnTopSpatialLayerProduceDeltaFrames) {
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	VideoCodec codec_settings = DefaultCodecSettings();
	codec_settings.SetScalabilityMode(ScalabilityMode::kL2T1);
	ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
	WEBRTC_VIDEO_CODEC_OK);

	VideoEncoder::RateControlParameters rate_parameters;
	rate_parameters.framerate_fps = 30;
	rate_parameters.bitrate.SetBitrate(/spatial_index=/0, 0, 300'000);
	rate_parameters.bitrate.SetBitrate(/spatial_index=/1, 0, 0);
	encoder->SetRates(rate_parameters);

	std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
	EncodedVideoFrameProducer(*encoder).SetNumInputFrames(2).Encode();
	ASSERT_THAT(encoded_frames, SizeIs(2));
	EXPECT_THAT(encoded_frames[0].encoded_image._frameType,
	Eq(VideoFrameType::kVideoFrameKey));
	EXPECT_THAT(encoded_frames[1].encoded_image._frameType,
	Eq(VideoFrameType::kVideoFrameDelta));
	}

	TEST(LibaomAv1EncoderTest, SetsEndOfPictureForLastFrameInTemporalUnit) {
	VideoBitrateAllocation allocation;
	allocation.SetBitrate(0, 0, 30000);
	allocation.SetBitrate(1, 0, 40000);
	allocation.SetBitrate(2, 0, 30000);

	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	VideoCodec codec_settings = DefaultCodecSettings();
	// Configure encoder with 3 spatial layers.
	codec_settings.SetScalabilityMode(ScalabilityMode::kL3T1);
	codec_settings.startBitrate = allocation.get_sum_kbps();
	ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
	WEBRTC_VIDEO_CODEC_OK);

	encoder->SetRates(VideoEncoder::RateControlParameters(
	allocation, codec_settings.maxFramerate));

	std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
	EncodedVideoFrameProducer(*encoder).SetNumInputFrames(2).Encode();
	ASSERT_THAT(encoded_frames, SizeIs(6));
	EXPECT_FALSE(encoded_frames[0].codec_specific_info.end_of_picture);
	EXPECT_FALSE(encoded_frames[1].codec_specific_info.end_of_picture);
	EXPECT_TRUE(encoded_frames[2].codec_specific_info.end_of_picture);
	EXPECT_FALSE(encoded_frames[3].codec_specific_info.end_of_picture);
	EXPECT_FALSE(encoded_frames[4].codec_specific_info.end_of_picture);
	EXPECT_TRUE(encoded_frames[5].codec_specific_info.end_of_picture);
	}

	TEST(LibaomAv1EncoderTest, CheckOddDimensionsWithSpatialLayers) {
	VideoBitrateAllocation allocation;
	allocation.SetBitrate(0, 0, 30000);
	allocation.SetBitrate(1, 0, 40000);
	allocation.SetBitrate(2, 0, 30000);
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	VideoCodec codec_settings = DefaultCodecSettings();
	// Configure encoder with 3 spatial layers.
	codec_settings.SetScalabilityMode(ScalabilityMode::kL3T1);
	// Odd width and height values should not make encoder crash.
	codec_settings.width = 623;
	codec_settings.height = 405;
	codec_settings.startBitrate = allocation.get_sum_kbps();
	ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
	WEBRTC_VIDEO_CODEC_OK);
	encoder->SetRates(VideoEncoder::RateControlParameters(
	allocation, codec_settings.maxFramerate));
	EncodedVideoFrameProducer evfp(*encoder);
	evfp.SetResolution(RenderResolution{623, 405});
	std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
	evfp.SetNumInputFrames(2).Encode();
	ASSERT_THAT(encoded_frames, SizeIs(6));
	}

	TEST(LibaomAv1EncoderTest, EncoderInfoWithoutResolutionBitrateLimits) {
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	EXPECT_TRUE(encoder->GetEncoderInfo().resolution_bitrate_limits.empty());
	}

	TEST(LibaomAv1EncoderTest, EncoderInfoWithBitrateLimitsFromFieldTrial) {
	test::ScopedFieldTrials field_trials(
	"WebRTC-Av1-GetEncoderInfoOverride/"
	"frame_size_pixels:123\|456\|789,"
	"min_start_bitrate_bps:11000\|22000\|33000,"
	"min_bitrate_bps:44000\|55000\|66000,"
	"max_bitrate_bps:77000\|88000\|99000/");
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();

	EXPECT_THAT(
	encoder->GetEncoderInfo().resolution_bitrate_limits,
	::testing::ElementsAre(
	VideoEncoder::ResolutionBitrateLimits{123, 11000, 44000, 77000},
	VideoEncoder::ResolutionBitrateLimits{456, 22000, 55000, 88000},
	VideoEncoder::ResolutionBitrateLimits{789, 33000, 66000, 99000}));
	}

	TEST(LibaomAv1EncoderTest, EncoderInfoProvidesFpsAllocation) {
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	VideoCodec codec_settings = DefaultCodecSettings();
	codec_settings.SetScalabilityMode(ScalabilityMode::kL3T3);
	codec_settings.maxFramerate = 60;
	ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
	WEBRTC_VIDEO_CODEC_OK);

	const auto& encoder_info = encoder->GetEncoderInfo();
	EXPECT_THAT(encoder_info.fps_allocation[0],
	ElementsAre(255 / 4, 255 / 2, 255));
	EXPECT_THAT(encoder_info.fps_allocation[1],
	ElementsAre(255 / 4, 255 / 2, 255));
	EXPECT_THAT(encoder_info.fps_allocation[2],
	ElementsAre(255 / 4, 255 / 2, 255));
	EXPECT_THAT(encoder_info.fps_allocation[3], IsEmpty());
	}

	TEST(LibaomAv1EncoderTest, PopulatesEncodedFrameSize) {
	VideoBitrateAllocation allocation;
	allocation.SetBitrate(0, 0, 30000);
	allocation.SetBitrate(1, 0, 40000);
	allocation.SetBitrate(2, 0, 30000);
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	VideoCodec codec_settings = DefaultCodecSettings();
	codec_settings.startBitrate = allocation.get_sum_kbps();
	ASSERT_GT(codec_settings.width, 4);
	// Configure encoder with 3 spatial layers.
	codec_settings.SetScalabilityMode(ScalabilityMode::kL3T1);
	ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
	WEBRTC_VIDEO_CODEC_OK);
	encoder->SetRates(VideoEncoder::RateControlParameters(
	allocation, codec_settings.maxFramerate));
	using Frame = EncodedVideoFrameProducer::EncodedFrame;
	std::vector<Frame> encoded_frames =
	EncodedVideoFrameProducer(*encoder).SetNumInputFrames(1).Encode();
	EXPECT_THAT(
	encoded_frames,
	ElementsAre(
	Field(&Frame::encoded_image,
	AllOf(Field(&EncodedImage::_encodedWidth,
	codec_settings.width / 4),
	Field(&EncodedImage::_encodedHeight,
	codec_settings.height / 4))),
	Field(&Frame::encoded_image,
	AllOf(Field(&EncodedImage::_encodedWidth,
	codec_settings.width / 2),
	Field(&EncodedImage::_encodedHeight,
	codec_settings.height / 2))),
	Field(&Frame::encoded_image,
	AllOf(Field(&EncodedImage::_encodedWidth, codec_settings.width),
	Field(&EncodedImage::_encodedHeight,
	codec_settings.height)))));
	}

	TEST(LibaomAv1EncoderTest, RtpTimestampWrap) {
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	VideoCodec codec_settings = DefaultCodecSettings();
	codec_settings.SetScalabilityMode(ScalabilityMode::kL1T1);
	ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
	WEBRTC_VIDEO_CODEC_OK);

	VideoEncoder::RateControlParameters rate_parameters;
	rate_parameters.framerate_fps = 30;
	rate_parameters.bitrate.SetBitrate(/spatial_index=/0, 0, 300'000);
	encoder->SetRates(rate_parameters);

	std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
	EncodedVideoFrameProducer(*encoder)
	.SetNumInputFrames(2)
	.SetRtpTimestamp(std::numeric_limits<uint32_t>::max())
	.Encode();
	ASSERT_THAT(encoded_frames, SizeIs(2));
	EXPECT_THAT(encoded_frames[0].encoded_image._frameType,
	Eq(VideoFrameType::kVideoFrameKey));
	EXPECT_THAT(encoded_frames[1].encoded_image._frameType,
	Eq(VideoFrameType::kVideoFrameDelta));
	}

	TEST(LibaomAv1EncoderTest, TestCaptureTimeId) {
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	const Timestamp capture_time_id = Timestamp::Micros(2000);
	VideoCodec codec_settings = DefaultCodecSettings();
	codec_settings.SetScalabilityMode(ScalabilityMode::kL2T1);
	ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
	WEBRTC_VIDEO_CODEC_OK);

	VideoEncoder::RateControlParameters rate_parameters;
	rate_parameters.framerate_fps = 30;
	rate_parameters.bitrate.SetBitrate(/spatial_index=/0, /temporal_index=/0,
	300'000);
	rate_parameters.bitrate.SetBitrate(/spatial_index=/1, /temporal_index=/0,
	300'000);
	encoder->SetRates(rate_parameters);

	std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
	EncodedVideoFrameProducer(*encoder)
	.SetNumInputFrames(1)
	.SetCaptureTimeIdentifier(capture_time_id)
	.Encode();
	ASSERT_THAT(encoded_frames, SizeIs(2));
	ASSERT_TRUE(
	encoded_frames[0].encoded_image.CaptureTimeIdentifier().has_value());
	ASSERT_TRUE(
	encoded_frames[1].encoded_image.CaptureTimeIdentifier().has_value());
	EXPECT_EQ(encoded_frames[0].encoded_image.CaptureTimeIdentifier()->us(),
	capture_time_id.us());
	EXPECT_EQ(encoded_frames[1].encoded_image.CaptureTimeIdentifier()->us(),
	capture_time_id.us());
	}

	TEST(LibaomAv1EncoderTest, AdheresToTargetBitrateDespiteUnevenFrameTiming) {
	std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
	VideoCodec codec_settings = DefaultCodecSettings();
	codec_settings.SetScalabilityMode(ScalabilityMode::kL1T1);
	codec_settings.startBitrate = 300; // kbps
	codec_settings.width = 320;
	codec_settings.height = 180;
	ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
	WEBRTC_VIDEO_CODEC_OK);

	const int kFps = 30;
	const int kTargetBitrateBps = codec_settings.startBitrate * 1000;
	VideoEncoder::RateControlParameters rate_parameters;
	rate_parameters.framerate_fps = kFps;
	rate_parameters.bitrate.SetBitrate(/spatial_index=/0, 0, kTargetBitrateBps);
	encoder->SetRates(rate_parameters);

	class EncoderCallback : public EncodedImageCallback {
	public:
	EncoderCallback() = default;
	DataSize BytesEncoded() const { return bytes_encoded_; }

	private:
	Result OnEncodedImage(
	const EncodedImage& encoded_image,
	const CodecSpecificInfo* codec_specific_info) override {
	bytes_encoded_ += DataSize::Bytes(encoded_image.size());
	return Result(Result::Error::OK);
	}

	DataSize bytes_encoded_ = DataSize::Zero();
	} callback;
	encoder->RegisterEncodeCompleteCallback(&callback);

	// Insert frames with too low rtp timestamp delta compared to what is expected
	// based on the framerate, then insert on with 2x the delta it should - making
	// the average correct.
	const uint32_t kHighTimestampDelta =
	static_cast<uint32_t>((90000.0 / kFps) * 2 + 0.5);
	const uint32_t kLowTimestampDelta =
	static_cast<uint32_t>((90000.0 - kHighTimestampDelta) / (kFps - 1));

	std::unique_ptr<test::FrameGeneratorInterface> frame_buffer_generator =
	test::CreateSquareFrameGenerator(
	codec_settings.width, codec_settings.height,
	test::FrameGeneratorInterface::OutputType::kI420, /num_squares=/20);

	uint32_t rtp_timestamp = 1000;
	std::vector<VideoFrameType> frame_types = {VideoFrameType::kVideoFrameKey};

	const int kRunTimeSeconds = 3;
	for (int i = 0; i < kRunTimeSeconds; ++i) {
	for (int j = 0; j < kFps; ++j) {
	if (j < kFps - 1) {
	rtp_timestamp += kLowTimestampDelta;
	} else {
	rtp_timestamp += kHighTimestampDelta;
	}
	VideoFrame frame = VideoFrame::Builder()
	.set_video_frame_buffer(
	frame_buffer_generator->NextFrame().buffer)
	.set_timestamp_rtp(rtp_timestamp)
	.build();

	RTC_CHECK_EQ(encoder->Encode(frame, &frame_types), WEBRTC_VIDEO_CODEC_OK);
	frame_types[0] = VideoFrameType::kVideoFrameDelta;
	}
	}

	// Expect produced bitrate to match, to within 10%.
	// This catches an issue that was seen when real frame timestamps with jitter
	// was used. It resulted in the overall produced bitrate to be overshot by
	// ~30% even though the averages should have been ok.
	EXPECT_NEAR(
	(callback.BytesEncoded() / TimeDelta::Seconds(kRunTimeSeconds)).bps(),
	kTargetBitrateBps, kTargetBitrateBps / 10);
	}

	} // namespace
	} // namespace webrtc