| /* |
| * Copyright 2018 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 "video/config/simulcast.h" |
| |
| #include "api/transport/field_trial_based_config.h" |
| #include "media/base/media_constants.h" |
| #include "test/field_trial.h" |
| #include "test/gtest.h" |
| |
| namespace webrtc { |
| namespace { |
| constexpr int kQpMax = 55; |
| constexpr double kBitratePriority = 2.0; |
| constexpr bool kScreenshare = true; |
| constexpr int kDefaultTemporalLayers = 3; // Value from simulcast.cc. |
| |
| // Values from kSimulcastConfigs in simulcast.cc. |
| const std::vector<VideoStream> GetSimulcastBitrates720p() { |
| std::vector<VideoStream> streams(3); |
| streams[0].min_bitrate_bps = 30000; |
| streams[0].target_bitrate_bps = 150000; |
| streams[0].max_bitrate_bps = 200000; |
| streams[1].min_bitrate_bps = 150000; |
| streams[1].target_bitrate_bps = 500000; |
| streams[1].max_bitrate_bps = 700000; |
| streams[2].min_bitrate_bps = 600000; |
| streams[2].target_bitrate_bps = 2500000; |
| streams[2].max_bitrate_bps = 2500000; |
| return streams; |
| } |
| } // namespace |
| |
| TEST(SimulcastTest, TotalMaxBitrateIsZeroForNoStreams) { |
| std::vector<VideoStream> streams; |
| EXPECT_EQ(0, cricket::GetTotalMaxBitrate(streams).bps()); |
| } |
| |
| TEST(SimulcastTest, GetTotalMaxBitrateForSingleStream) { |
| std::vector<VideoStream> streams(1); |
| streams[0].max_bitrate_bps = 100000; |
| EXPECT_EQ(100000, cricket::GetTotalMaxBitrate(streams).bps()); |
| } |
| |
| TEST(SimulcastTest, GetTotalMaxBitrateForMultipleStreams) { |
| std::vector<VideoStream> streams(3); |
| streams[0].target_bitrate_bps = 100000; |
| streams[1].target_bitrate_bps = 200000; |
| streams[2].max_bitrate_bps = 400000; |
| EXPECT_EQ(700000, cricket::GetTotalMaxBitrate(streams).bps()); |
| } |
| |
| TEST(SimulcastTest, BandwidthAboveTotalMaxBitrateGivenToHighestStream) { |
| std::vector<VideoStream> streams(3); |
| streams[0].target_bitrate_bps = 100000; |
| streams[1].target_bitrate_bps = 200000; |
| streams[2].max_bitrate_bps = 400000; |
| |
| const webrtc::DataRate one_bps = webrtc::DataRate::BitsPerSec(1); |
| |
| // No bitrate above the total max to give to the highest stream. |
| const webrtc::DataRate max_total_bitrate = |
| cricket::GetTotalMaxBitrate(streams); |
| cricket::BoostMaxSimulcastLayer(max_total_bitrate, &streams); |
| EXPECT_EQ(400000, streams[2].max_bitrate_bps); |
| EXPECT_EQ(max_total_bitrate, cricket::GetTotalMaxBitrate(streams)); |
| |
| // The bitrate above the total max should be given to the highest stream. |
| cricket::BoostMaxSimulcastLayer(max_total_bitrate + one_bps, &streams); |
| EXPECT_EQ(400000 + 1, streams[2].max_bitrate_bps); |
| EXPECT_EQ(max_total_bitrate + one_bps, cricket::GetTotalMaxBitrate(streams)); |
| } |
| |
| TEST(SimulcastTest, GetConfig) { |
| const std::vector<VideoStream> kExpected = GetSimulcastBitrates720p(); |
| const FieldTrialBasedConfig trials; |
| |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 3; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 1280, 720, kBitratePriority, kQpMax, |
| !kScreenshare, true, trials, webrtc::kVideoCodecVP8); |
| |
| EXPECT_EQ(kMaxLayers, streams.size()); |
| EXPECT_EQ(320u, streams[0].width); |
| EXPECT_EQ(180u, streams[0].height); |
| EXPECT_EQ(640u, streams[1].width); |
| EXPECT_EQ(360u, streams[1].height); |
| EXPECT_EQ(1280u, streams[2].width); |
| EXPECT_EQ(720u, streams[2].height); |
| |
| for (size_t i = 0; i < streams.size(); ++i) { |
| EXPECT_EQ(size_t{kDefaultTemporalLayers}, streams[i].num_temporal_layers); |
| EXPECT_EQ(cricket::kDefaultVideoMaxFramerate, streams[i].max_framerate); |
| EXPECT_EQ(kQpMax, streams[i].max_qp); |
| EXPECT_EQ(kExpected[i].min_bitrate_bps, streams[i].min_bitrate_bps); |
| EXPECT_EQ(kExpected[i].target_bitrate_bps, streams[i].target_bitrate_bps); |
| EXPECT_EQ(kExpected[i].max_bitrate_bps, streams[i].max_bitrate_bps); |
| EXPECT_TRUE(streams[i].active); |
| } |
| // Currently set on lowest stream. |
| EXPECT_EQ(kBitratePriority, streams[0].bitrate_priority); |
| EXPECT_FALSE(streams[1].bitrate_priority); |
| EXPECT_FALSE(streams[2].bitrate_priority); |
| } |
| |
| TEST(SimulcastTest, GetConfigWithBaseHeavyVP8TL3RateAllocation) { |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-UseBaseHeavyVP8TL3RateAllocation/Enabled/"); |
| FieldTrialBasedConfig trials; |
| |
| const std::vector<VideoStream> kExpected = GetSimulcastBitrates720p(); |
| |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 3; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 1280, 720, kBitratePriority, kQpMax, |
| !kScreenshare, true, trials, webrtc::kVideoCodecVP8); |
| |
| EXPECT_EQ(kExpected[0].min_bitrate_bps, streams[0].min_bitrate_bps); |
| EXPECT_EQ(static_cast<int>(0.4 * kExpected[0].target_bitrate_bps / 0.6), |
| streams[0].target_bitrate_bps); |
| EXPECT_EQ(static_cast<int>(0.4 * kExpected[0].max_bitrate_bps / 0.6), |
| streams[0].max_bitrate_bps); |
| for (size_t i = 1; i < streams.size(); ++i) { |
| EXPECT_EQ(kExpected[i].min_bitrate_bps, streams[i].min_bitrate_bps); |
| EXPECT_EQ(kExpected[i].target_bitrate_bps, streams[i].target_bitrate_bps); |
| EXPECT_EQ(kExpected[i].max_bitrate_bps, streams[i].max_bitrate_bps); |
| } |
| } |
| |
| TEST(SimulcastTest, GetConfigWithLimitedMaxLayers) { |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 2; |
| FieldTrialBasedConfig trials; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 1280, 720, kBitratePriority, kQpMax, |
| !kScreenshare, true, trials, webrtc::kVideoCodecVP8); |
| |
| EXPECT_EQ(kMaxLayers, streams.size()); |
| EXPECT_EQ(640u, streams[0].width); |
| EXPECT_EQ(360u, streams[0].height); |
| EXPECT_EQ(1280u, streams[1].width); |
| EXPECT_EQ(720u, streams[1].height); |
| } |
| |
| TEST(SimulcastTest, GetConfigWithLimitedMaxLayersForResolution) { |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-LegacySimulcastLayerLimit/Enabled/"); |
| FieldTrialBasedConfig trials; |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 3; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 800, 600, kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| |
| EXPECT_EQ(2u, streams.size()); |
| EXPECT_EQ(400u, streams[0].width); |
| EXPECT_EQ(300u, streams[0].height); |
| EXPECT_EQ(800u, streams[1].width); |
| EXPECT_EQ(600u, streams[1].height); |
| } |
| |
| TEST(SimulcastTest, GetConfigWithLowResolutionScreenshare) { |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-LegacySimulcastLayerLimit/Enabled/"); |
| FieldTrialBasedConfig trials; |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 3; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 100, 100, kBitratePriority, kQpMax, kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| |
| // Simulcast streams number is never decreased for screenshare, |
| // even for very low resolution. |
| EXPECT_GT(streams.size(), 1u); |
| } |
| |
| TEST(SimulcastTest, GetConfigWithNotLimitedMaxLayersForResolution) { |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-LegacySimulcastLayerLimit/Disabled/"); |
| FieldTrialBasedConfig trials; |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 3; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 800, 600, kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| |
| EXPECT_EQ(kMaxLayers, streams.size()); |
| EXPECT_EQ(200u, streams[0].width); |
| EXPECT_EQ(150u, streams[0].height); |
| EXPECT_EQ(400u, streams[1].width); |
| EXPECT_EQ(300u, streams[1].height); |
| EXPECT_EQ(800u, streams[2].width); |
| EXPECT_EQ(600u, streams[2].height); |
| } |
| |
| TEST(SimulcastTest, GetConfigWithNormalizedResolution) { |
| FieldTrialBasedConfig trials; |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 2; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 640 + 1, 360 + 1, kBitratePriority, kQpMax, |
| !kScreenshare, true, trials, webrtc::kVideoCodecVP8); |
| |
| // Must be divisible by |2 ^ (num_layers - 1)|. |
| EXPECT_EQ(kMaxLayers, streams.size()); |
| EXPECT_EQ(320u, streams[0].width); |
| EXPECT_EQ(180u, streams[0].height); |
| EXPECT_EQ(640u, streams[1].width); |
| EXPECT_EQ(360u, streams[1].height); |
| } |
| |
| TEST(SimulcastTest, GetConfigWithNormalizedResolutionDivisibleBy4) { |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-NormalizeSimulcastResolution/Enabled-2/"); |
| FieldTrialBasedConfig trials; |
| |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 2; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 709, 501, kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| |
| // Must be divisible by |2 ^ 2|. |
| EXPECT_EQ(kMaxLayers, streams.size()); |
| EXPECT_EQ(354u, streams[0].width); |
| EXPECT_EQ(250u, streams[0].height); |
| EXPECT_EQ(708u, streams[1].width); |
| EXPECT_EQ(500u, streams[1].height); |
| } |
| |
| TEST(SimulcastTest, GetConfigWithNormalizedResolutionDivisibleBy8) { |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-NormalizeSimulcastResolution/Enabled-3/"); |
| FieldTrialBasedConfig trials; |
| |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 2; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 709, 501, kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| |
| // Must be divisible by |2 ^ 3|. |
| EXPECT_EQ(kMaxLayers, streams.size()); |
| EXPECT_EQ(352u, streams[0].width); |
| EXPECT_EQ(248u, streams[0].height); |
| EXPECT_EQ(704u, streams[1].width); |
| EXPECT_EQ(496u, streams[1].height); |
| } |
| |
| TEST(SimulcastTest, GetConfigForLegacyLayerLimit) { |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-LegacySimulcastLayerLimit/Enabled/"); |
| FieldTrialBasedConfig trials; |
| |
| const size_t kMinLayers = 1; |
| const int kMaxLayers = 3; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 320, 180, kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(1u, streams.size()); |
| |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 640, 360, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(2u, streams.size()); |
| |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 1920, 1080, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(3u, streams.size()); |
| } |
| |
| TEST(SimulcastTest, GetConfigForLegacyLayerLimitWithRequiredHD) { |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-LegacySimulcastLayerLimit/Enabled/"); |
| FieldTrialBasedConfig trials; |
| |
| const size_t kMinLayers = 3; // "HD" layer must be present! |
| const int kMaxLayers = 3; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 320, 180, kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(3u, streams.size()); |
| |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 640, 360, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(3u, streams.size()); |
| |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 1920, 1080, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(3u, streams.size()); |
| } |
| |
| TEST(SimulcastTest, GetConfigForScreenshareSimulcast) { |
| FieldTrialBasedConfig trials; |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 3; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 1400, 800, kBitratePriority, kQpMax, kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| |
| EXPECT_GT(streams.size(), 1u); |
| for (size_t i = 0; i < streams.size(); ++i) { |
| EXPECT_EQ(1400u, streams[i].width) << "Screen content never scaled."; |
| EXPECT_EQ(800u, streams[i].height) << "Screen content never scaled."; |
| EXPECT_EQ(kQpMax, streams[i].max_qp); |
| EXPECT_TRUE(streams[i].active); |
| EXPECT_GT(streams[i].num_temporal_layers, size_t{1}); |
| EXPECT_GT(streams[i].max_framerate, 0); |
| EXPECT_GT(streams[i].min_bitrate_bps, 0); |
| EXPECT_GT(streams[i].target_bitrate_bps, streams[i].min_bitrate_bps); |
| EXPECT_GE(streams[i].max_bitrate_bps, streams[i].target_bitrate_bps); |
| } |
| } |
| |
| TEST(SimulcastTest, GetConfigForScreenshareSimulcastWithLimitedMaxLayers) { |
| FieldTrialBasedConfig trials; |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 1; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 1400, 800, kBitratePriority, kQpMax, kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| |
| EXPECT_EQ(kMaxLayers, streams.size()); |
| } |
| |
| TEST(SimulcastTest, AveragesBitratesForNonStandardResolution) { |
| FieldTrialBasedConfig trials; |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 3; |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, 900, 800, kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| |
| EXPECT_EQ(kMaxLayers, streams.size()); |
| EXPECT_EQ(900u, streams[2].width); |
| EXPECT_EQ(800u, streams[2].height); |
| EXPECT_EQ(1850000, streams[2].max_bitrate_bps); |
| EXPECT_EQ(1850000, streams[2].target_bitrate_bps); |
| EXPECT_EQ(475000, streams[2].min_bitrate_bps); |
| } |
| |
| TEST(SimulcastTest, BitratesForCloseToStandardResolution) { |
| const size_t kMinLayers = 1; |
| const size_t kMaxLayers = 3; |
| // Resolution very close to 720p in number of pixels |
| const size_t kWidth = 1280; |
| const size_t kHeight = 716; |
| const std::vector<VideoStream> kExpectedNear = GetSimulcastBitrates720p(); |
| FieldTrialBasedConfig trials; |
| |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| kMinLayers, kMaxLayers, kWidth, kHeight, kBitratePriority, kQpMax, |
| !kScreenshare, true, trials, webrtc::kVideoCodecVP8); |
| |
| EXPECT_EQ(kMaxLayers, streams.size()); |
| EXPECT_EQ(kWidth, streams[2].width); |
| EXPECT_EQ(kHeight, streams[2].height); |
| for (size_t i = 0; i < streams.size(); ++i) { |
| EXPECT_NEAR(kExpectedNear[i].max_bitrate_bps, streams[i].max_bitrate_bps, |
| 20000); |
| EXPECT_NEAR(kExpectedNear[i].target_bitrate_bps, |
| streams[i].target_bitrate_bps, 20000); |
| EXPECT_NEAR(kExpectedNear[i].min_bitrate_bps, streams[i].min_bitrate_bps, |
| 20000); |
| } |
| } |
| |
| TEST(SimulcastTest, MaxLayersWithRoundUpDisabled) { |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-SimulcastLayerLimitRoundUp/max_ratio:0.0/"); |
| FieldTrialBasedConfig trials; |
| const size_t kMinLayers = 1; |
| const int kMaxLayers = 3; |
| |
| std::vector<VideoStream> streams; |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 960, 540, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(3u, streams.size()); |
| // <960x540: 2 layers |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 960, 539, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(2u, streams.size()); |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 480, 270, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(2u, streams.size()); |
| // <480x270: 1 layer |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 480, 269, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(1u, streams.size()); |
| } |
| |
| TEST(SimulcastTest, MaxLayersWithDefaultRoundUpRatio) { |
| // Default: "WebRTC-SimulcastLayerLimitRoundUp/max_ratio:0.1/" |
| FieldTrialBasedConfig trials; |
| const size_t kMinLayers = 1; |
| const int kMaxLayers = 3; |
| |
| std::vector<VideoStream> streams; |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 960, 540, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(3u, streams.size()); |
| // Lowest cropped height where max layers from higher resolution is used. |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 960, 512, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(3u, streams.size()); |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 960, 508, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(2u, streams.size()); |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 480, 270, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(2u, streams.size()); |
| // Lowest cropped height where max layers from higher resolution is used. |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 480, 256, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(2u, streams.size()); |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 480, 254, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(1u, streams.size()); |
| } |
| |
| TEST(SimulcastTest, MaxLayersWithRoundUpRatio) { |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-SimulcastLayerLimitRoundUp/max_ratio:0.13/"); |
| FieldTrialBasedConfig trials; |
| const size_t kMinLayers = 1; |
| const int kMaxLayers = 3; |
| |
| std::vector<VideoStream> streams; |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 480, 270, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(2u, streams.size()); |
| // Lowest cropped height where max layers from higher resolution is used. |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 480, 252, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(2u, streams.size()); |
| streams = cricket::GetSimulcastConfig(kMinLayers, kMaxLayers, 480, 250, |
| kBitratePriority, kQpMax, !kScreenshare, |
| true, trials, webrtc::kVideoCodecVP8); |
| EXPECT_EQ(1u, streams.size()); |
| } |
| |
| TEST(SimulcastTest, BitratesInterpolatedForResBelow180p) { |
| // TODO(webrtc:12415): Remove when feature launches. |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-LowresSimulcastBitrateInterpolation/Enabled/"); |
| |
| const size_t kMaxLayers = 3; |
| FieldTrialBasedConfig trials; |
| |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| /* min_layers = */ 1, kMaxLayers, /* width = */ 960, /* height = */ 540, |
| kBitratePriority, kQpMax, !kScreenshare, true, trials, |
| webrtc::kVideoCodecVP8); |
| |
| ASSERT_EQ(streams.size(), kMaxLayers); |
| EXPECT_EQ(240u, streams[0].width); |
| EXPECT_EQ(135u, streams[0].height); |
| EXPECT_EQ(streams[0].max_bitrate_bps, 112500); |
| EXPECT_EQ(streams[0].target_bitrate_bps, 84375); |
| EXPECT_EQ(streams[0].min_bitrate_bps, 30000); |
| } |
| |
| TEST(SimulcastTest, BitratesConsistentForVerySmallRes) { |
| // TODO(webrtc:12415): Remove when feature launches. |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-LowresSimulcastBitrateInterpolation/Enabled/"); |
| |
| FieldTrialBasedConfig trials; |
| |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| /* min_layers = */ 1, /* max_layers = */ 3, /* width = */ 1, |
| /* height = */ 1, kBitratePriority, kQpMax, !kScreenshare, true, trials, |
| webrtc::kVideoCodecVP8); |
| |
| ASSERT_TRUE(!streams.empty()); |
| EXPECT_EQ(1u, streams[0].width); |
| EXPECT_EQ(1u, streams[0].height); |
| EXPECT_EQ(streams[0].max_bitrate_bps, 30000); |
| EXPECT_EQ(streams[0].target_bitrate_bps, 30000); |
| EXPECT_EQ(streams[0].min_bitrate_bps, 30000); |
| } |
| |
| TEST(SimulcastTest, |
| BitratesNotInterpolatedForResBelow180pWhenDisabledTrialSet) { |
| test::ScopedFieldTrials field_trials( |
| "WebRTC-LowresSimulcastBitrateInterpolation/Disabled/"); |
| |
| const size_t kMaxLayers = 3; |
| FieldTrialBasedConfig trials; |
| |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| /* min_layers = */ 1, kMaxLayers, /* width = */ 960, /* height = */ 540, |
| kBitratePriority, kQpMax, !kScreenshare, true, trials, |
| webrtc::kVideoCodecVP8); |
| |
| ASSERT_EQ(streams.size(), kMaxLayers); |
| EXPECT_EQ(240u, streams[0].width); |
| EXPECT_EQ(135u, streams[0].height); |
| EXPECT_EQ(streams[0].max_bitrate_bps, 200000); |
| EXPECT_EQ(streams[0].target_bitrate_bps, 150000); |
| EXPECT_EQ(streams[0].min_bitrate_bps, 30000); |
| } |
| |
| TEST(SimulcastTest, BitratesBasedOnCodec) { |
| const size_t kMaxLayers = 3; |
| FieldTrialBasedConfig trials; |
| |
| std::vector<VideoStream> streams_vp8 = cricket::GetSimulcastConfig( |
| /* min_layers = */ 1, /* max_layers = */ 3, /* width = */ 1280, |
| /* height = */ 720, kBitratePriority, kQpMax, !kScreenshare, true, trials, |
| webrtc::kVideoCodecVP8); |
| |
| std::vector<VideoStream> streams_vp9 = cricket::GetSimulcastConfig( |
| /* min_layers = */ 1, /* max_layers = */ 3, /* width = */ 1280, |
| /* height = */ 720, kBitratePriority, kQpMax, !kScreenshare, true, trials, |
| webrtc::kVideoCodecVP9); |
| |
| ASSERT_EQ(streams_vp8.size(), kMaxLayers); |
| ASSERT_EQ(streams_vp9.size(), kMaxLayers); |
| |
| EXPECT_EQ(streams_vp9[0].width, streams_vp8[0].width); |
| EXPECT_EQ(streams_vp9[0].height, streams_vp8[0].height); |
| |
| EXPECT_NE(streams_vp9[0].max_bitrate_bps, streams_vp8[0].max_bitrate_bps); |
| EXPECT_NE(streams_vp9[0].target_bitrate_bps, |
| streams_vp8[0].target_bitrate_bps); |
| |
| EXPECT_NE(streams_vp9[1].max_bitrate_bps, streams_vp8[1].max_bitrate_bps); |
| EXPECT_NE(streams_vp9[1].target_bitrate_bps, |
| streams_vp8[1].target_bitrate_bps); |
| EXPECT_NE(streams_vp9[1].min_bitrate_bps, streams_vp8[1].min_bitrate_bps); |
| |
| EXPECT_NE(streams_vp9[2].max_bitrate_bps, streams_vp8[2].max_bitrate_bps); |
| EXPECT_NE(streams_vp9[2].target_bitrate_bps, |
| streams_vp8[2].target_bitrate_bps); |
| EXPECT_NE(streams_vp9[2].min_bitrate_bps, streams_vp8[2].min_bitrate_bps); |
| } |
| |
| TEST(SimulcastTest, BitratesForVP9) { |
| const size_t kMaxLayers = 3; |
| FieldTrialBasedConfig trials; |
| |
| std::vector<VideoStream> streams = cricket::GetSimulcastConfig( |
| /* min_layers = */ 1, kMaxLayers, /* width = */ 1280, /* height = */ 720, |
| kBitratePriority, kQpMax, !kScreenshare, true, trials, |
| webrtc::kVideoCodecVP9); |
| |
| ASSERT_EQ(streams.size(), kMaxLayers); |
| EXPECT_EQ(1280u, streams[2].width); |
| EXPECT_EQ(720u, streams[2].height); |
| EXPECT_EQ(streams[2].max_bitrate_bps, 1524000); |
| EXPECT_EQ(streams[2].target_bitrate_bps, 1524000); |
| EXPECT_EQ(streams[2].min_bitrate_bps, 481000); |
| |
| streams = cricket::GetSimulcastConfig( |
| /* min_layers = */ 1, kMaxLayers, /* width = */ 1276, /* height = */ 716, |
| kBitratePriority, kQpMax, !kScreenshare, true, trials, |
| webrtc::kVideoCodecVP9); |
| |
| ASSERT_EQ(streams.size(), kMaxLayers); |
| EXPECT_EQ(1276u, streams[2].width); |
| EXPECT_EQ(716u, streams[2].height); |
| EXPECT_NEAR(streams[2].max_bitrate_bps, 1524000, 20000); |
| EXPECT_NEAR(streams[2].target_bitrate_bps, 1524000, 20000); |
| EXPECT_NEAR(streams[2].min_bitrate_bps, 481000, 20000); |
| } |
| |
| } // namespace webrtc |
