mirror of
https://github.com/mollyim/webrtc.git
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aa7bc7e0bb
Without the added preprocessor check, iOS device will be using the desktop logic to determine the number of thread. This put iPhone 8 and iPhone X to use 3 threads and all other iPhones after iPhone 5 to use a single thread. This CL added a preprocessor for WEBRTC_IOS to have it own thread number calculation logic. In which, the maximum number of thread is fetched from a field_trial and capped by the number of CPU available on the device. Bug: webrtc:10005 Change-Id: I8c6257fcbf85b07bc986b5f733dbabb3feee37f7 Reviewed-on: https://webrtc-review.googlesource.com/c/110941 Commit-Queue: Jiawei Ou <ouj@fb.com> Reviewed-by: Erik Språng <sprang@webrtc.org> Reviewed-by: Kári Helgason <kthelgason@webrtc.org> Reviewed-by: Magnus Flodman <mflodman@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25997}
491 lines
19 KiB
C++
491 lines
19 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 <vector>
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#include "absl/memory/memory.h"
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#include "api/test/create_videocodec_test_fixture.h"
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#include "api/test/video/function_video_encoder_factory.h"
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#include "api/video_codecs/sdp_video_format.h"
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#include "media/base/mediaconstants.h"
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#include "media/engine/internaldecoderfactory.h"
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#include "media/engine/internalencoderfactory.h"
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#include "media/engine/simulcast_encoder_adapter.h"
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#include "modules/video_coding/utility/vp8_header_parser.h"
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#include "modules/video_coding/utility/vp9_uncompressed_header_parser.h"
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#include "test/gtest.h"
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#include "test/testsupport/fileutils.h"
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namespace webrtc {
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namespace test {
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using VideoStatistics = VideoCodecTestStats::VideoStatistics;
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namespace {
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// Codec settings.
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const int kCifWidth = 352;
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const int kCifHeight = 288;
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const int kNumFramesShort = 100;
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const int kNumFramesLong = 300;
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const size_t kBitrateRdPerfKbps[] = {100, 200, 300, 400, 500, 600,
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700, 800, 1000, 1250, 1400, 1600,
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1800, 2000, 2200, 2500};
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const size_t kNumFirstFramesToSkipAtRdPerfAnalysis = 60;
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class QpFrameChecker : public VideoCodecTestFixture::EncodedFrameChecker {
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public:
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void CheckEncodedFrame(webrtc::VideoCodecType codec,
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const EncodedImage& encoded_frame) const override {
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int qp;
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if (codec == kVideoCodecVP8) {
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EXPECT_TRUE(
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vp8::GetQp(encoded_frame._buffer, encoded_frame._length, &qp));
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} else if (codec == kVideoCodecVP9) {
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EXPECT_TRUE(
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vp9::GetQp(encoded_frame._buffer, encoded_frame._length, &qp));
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} else {
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RTC_NOTREACHED();
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}
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EXPECT_EQ(encoded_frame.qp_, qp) << "Encoder QP != parsed bitstream QP.";
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}
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};
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VideoCodecTestFixture::Config CreateConfig() {
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VideoCodecTestFixture::Config config;
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config.filename = "foreman_cif";
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config.filepath = ResourcePath(config.filename, "yuv");
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config.num_frames = kNumFramesLong;
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config.use_single_core = true;
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return config;
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}
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void PrintRdPerf(std::map<size_t, std::vector<VideoStatistics>> rd_stats) {
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printf("--> Summary\n");
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printf("%11s %5s %6s %11s %12s %11s %13s %13s %5s %7s %7s %7s %13s %13s\n",
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"uplink_kbps", "width", "height", "spatial_idx", "temporal_idx",
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"target_kbps", "downlink_kbps", "framerate_fps", "psnr", "psnr_y",
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"psnr_u", "psnr_v", "enc_speed_fps", "dec_speed_fps");
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for (const auto& rd_stat : rd_stats) {
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const size_t bitrate_kbps = rd_stat.first;
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for (const auto& layer_stat : rd_stat.second) {
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printf(
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"%11zu %5zu %6zu %11zu %12zu %11zu %13zu %13.2f %5.2f %7.2f %7.2f "
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"%7.2f"
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"%13.2f %13.2f\n",
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bitrate_kbps, layer_stat.width, layer_stat.height,
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layer_stat.spatial_idx, layer_stat.temporal_idx,
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layer_stat.target_bitrate_kbps, layer_stat.bitrate_kbps,
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layer_stat.framerate_fps, layer_stat.avg_psnr, layer_stat.avg_psnr_y,
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layer_stat.avg_psnr_u, layer_stat.avg_psnr_v,
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layer_stat.enc_speed_fps, layer_stat.dec_speed_fps);
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}
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}
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}
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} // namespace
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#if defined(RTC_ENABLE_VP9)
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TEST(VideoCodecTestLibvpx, HighBitrateVP9) {
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auto config = CreateConfig();
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config.SetCodecSettings(cricket::kVp9CodecName, 1, 1, 1, false, true, false,
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kCifWidth, kCifHeight);
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config.num_frames = kNumFramesShort;
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const auto frame_checker = absl::make_unique<QpFrameChecker>();
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config.encoded_frame_checker = frame_checker.get();
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auto fixture = CreateVideoCodecTestFixture(config);
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std::vector<RateProfile> rate_profiles = {{500, 30, kNumFramesShort}};
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std::vector<RateControlThresholds> rc_thresholds = {
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{5, 1, 0, 1, 0.3, 0.1, 0, 1}};
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std::vector<QualityThresholds> quality_thresholds = {{37, 36, 0.94, 0.92}};
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fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
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}
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TEST(VideoCodecTestLibvpx, ChangeBitrateVP9) {
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auto config = CreateConfig();
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config.SetCodecSettings(cricket::kVp9CodecName, 1, 1, 1, false, true, false,
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kCifWidth, kCifHeight);
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const auto frame_checker = absl::make_unique<QpFrameChecker>();
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config.encoded_frame_checker = frame_checker.get();
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auto fixture = CreateVideoCodecTestFixture(config);
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std::vector<RateProfile> rate_profiles = {
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{200, 30, 100}, // target_kbps, input_fps, frame_index_rate_update
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{700, 30, 200},
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{500, 30, kNumFramesLong}};
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std::vector<RateControlThresholds> rc_thresholds = {
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{5, 2, 0, 1, 0.5, 0.1, 0, 1},
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{15, 3, 0, 1, 0.5, 0.1, 0, 0},
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{10, 2, 0, 1, 0.5, 0.1, 0, 0}};
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std::vector<QualityThresholds> quality_thresholds = {
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{34, 33, 0.90, 0.88}, {38, 35, 0.95, 0.91}, {35, 34, 0.93, 0.90}};
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fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
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}
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TEST(VideoCodecTestLibvpx, ChangeFramerateVP9) {
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auto config = CreateConfig();
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config.SetCodecSettings(cricket::kVp9CodecName, 1, 1, 1, false, true, false,
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kCifWidth, kCifHeight);
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const auto frame_checker = absl::make_unique<QpFrameChecker>();
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config.encoded_frame_checker = frame_checker.get();
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auto fixture = CreateVideoCodecTestFixture(config);
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std::vector<RateProfile> rate_profiles = {
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{100, 24, 100}, // target_kbps, input_fps, frame_index_rate_update
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{100, 15, 200},
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{100, 10, kNumFramesLong}};
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// Framerate mismatch should be lower for lower framerate.
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std::vector<RateControlThresholds> rc_thresholds = {
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{10, 2, 40, 1, 0.5, 0.2, 0, 1},
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{8, 2, 5, 1, 0.5, 0.2, 0, 0},
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{5, 2, 0, 1, 0.5, 0.3, 0, 0}};
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// Quality should be higher for lower framerates for the same content.
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std::vector<QualityThresholds> quality_thresholds = {
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{33, 32, 0.89, 0.87}, {33.5, 32, 0.90, 0.86}, {33.5, 31.5, 0.90, 0.85}};
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fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
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}
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TEST(VideoCodecTestLibvpx, DenoiserOnVP9) {
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auto config = CreateConfig();
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config.SetCodecSettings(cricket::kVp9CodecName, 1, 1, 1, true, true, false,
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kCifWidth, kCifHeight);
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config.num_frames = kNumFramesShort;
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const auto frame_checker = absl::make_unique<QpFrameChecker>();
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config.encoded_frame_checker = frame_checker.get();
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auto fixture = CreateVideoCodecTestFixture(config);
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std::vector<RateProfile> rate_profiles = {{500, 30, kNumFramesShort}};
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std::vector<RateControlThresholds> rc_thresholds = {
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{5, 1, 0, 1, 0.3, 0.1, 0, 1}};
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std::vector<QualityThresholds> quality_thresholds = {{37.5, 36, 0.94, 0.93}};
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fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
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}
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TEST(VideoCodecTestLibvpx, VeryLowBitrateVP9) {
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auto config = CreateConfig();
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config.SetCodecSettings(cricket::kVp9CodecName, 1, 1, 1, false, true, true,
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kCifWidth, kCifHeight);
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const auto frame_checker = absl::make_unique<QpFrameChecker>();
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config.encoded_frame_checker = frame_checker.get();
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auto fixture = CreateVideoCodecTestFixture(config);
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std::vector<RateProfile> rate_profiles = {{50, 30, kNumFramesLong}};
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std::vector<RateControlThresholds> rc_thresholds = {
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{15, 3, 75, 1, 0.5, 0.4, 1, 1}};
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std::vector<QualityThresholds> quality_thresholds = {{28, 25, 0.80, 0.65}};
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fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
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}
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// TODO(marpan): Add temporal layer test for VP9, once changes are in
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// vp9 wrapper for this.
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#endif // defined(RTC_ENABLE_VP9)
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TEST(VideoCodecTestLibvpx, HighBitrateVP8) {
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auto config = CreateConfig();
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config.SetCodecSettings(cricket::kVp8CodecName, 1, 1, 1, true, true, false,
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kCifWidth, kCifHeight);
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config.num_frames = kNumFramesShort;
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const auto frame_checker = absl::make_unique<QpFrameChecker>();
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config.encoded_frame_checker = frame_checker.get();
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auto fixture = CreateVideoCodecTestFixture(config);
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std::vector<RateProfile> rate_profiles = {{500, 30, kNumFramesShort}};
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std::vector<RateControlThresholds> rc_thresholds = {
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{5, 1, 0, 1, 0.2, 0.1, 0, 1}};
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#if defined(WEBRTC_ARCH_ARM) || defined(WEBRTC_ARCH_ARM64)
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std::vector<QualityThresholds> quality_thresholds = {{35, 33, 0.91, 0.89}};
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#else
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std::vector<QualityThresholds> quality_thresholds = {{37, 35, 0.93, 0.91}};
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#endif
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fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
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}
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// The tests below are currently disabled for Android. For ARM, the encoder
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// uses |cpu_speed| = 12, as opposed to default |cpu_speed| <= 6 for x86,
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// which leads to significantly different quality. The quality and rate control
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// settings in the tests below are defined for encoder speed setting
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// |cpu_speed| <= ~6. A number of settings would need to be significantly
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// modified for the |cpu_speed| = 12 case. For now, keep the tests below
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// disabled on Android. Some quality parameter in the above test has been
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// adjusted to also pass for |cpu_speed| <= 12.
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// TODO(webrtc:9267): Fails on iOS
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#if defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS)
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#define MAYBE_ChangeBitrateVP8 DISABLED_ChangeBitrateVP8
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#else
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#define MAYBE_ChangeBitrateVP8 ChangeBitrateVP8
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#endif
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TEST(VideoCodecTestLibvpx, MAYBE_ChangeBitrateVP8) {
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auto config = CreateConfig();
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config.SetCodecSettings(cricket::kVp8CodecName, 1, 1, 1, true, true, false,
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kCifWidth, kCifHeight);
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const auto frame_checker = absl::make_unique<QpFrameChecker>();
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config.encoded_frame_checker = frame_checker.get();
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auto fixture = CreateVideoCodecTestFixture(config);
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std::vector<RateProfile> rate_profiles = {
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{200, 30, 100}, // target_kbps, input_fps, frame_index_rate_update
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{800, 30, 200},
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{500, 30, kNumFramesLong}};
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std::vector<RateControlThresholds> rc_thresholds = {
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{5, 1, 0, 1, 0.2, 0.1, 0, 1},
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{15.5, 1, 0, 1, 0.2, 0.1, 0, 0},
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{15, 1, 0, 1, 0.2, 0.1, 0, 0}};
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#if defined(WEBRTC_ARCH_ARM) || defined(WEBRTC_ARCH_ARM64)
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std::vector<QualityThresholds> quality_thresholds = {
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{31.8, 31, 0.86, 0.85}, {36, 34.8, 0.92, 0.90}, {33.5, 32, 0.90, 0.88}};
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#else
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std::vector<QualityThresholds> quality_thresholds = {
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{33, 32, 0.89, 0.88}, {38, 36, 0.94, 0.93}, {35, 34, 0.92, 0.91}};
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#endif
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fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
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}
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// TODO(webrtc:9267): Fails on iOS
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#if defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS)
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#define MAYBE_ChangeFramerateVP8 DISABLED_ChangeFramerateVP8
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#else
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#define MAYBE_ChangeFramerateVP8 ChangeFramerateVP8
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#endif
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TEST(VideoCodecTestLibvpx, MAYBE_ChangeFramerateVP8) {
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auto config = CreateConfig();
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config.SetCodecSettings(cricket::kVp8CodecName, 1, 1, 1, true, true, false,
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kCifWidth, kCifHeight);
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const auto frame_checker = absl::make_unique<QpFrameChecker>();
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config.encoded_frame_checker = frame_checker.get();
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auto fixture = CreateVideoCodecTestFixture(config);
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std::vector<RateProfile> rate_profiles = {
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{80, 24, 100}, // target_kbps, input_fps, frame_index_rate_update
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{80, 15, 200},
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{80, 10, kNumFramesLong}};
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#if defined(WEBRTC_ARCH_ARM) || defined(WEBRTC_ARCH_ARM64)
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std::vector<RateControlThresholds> rc_thresholds = {
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{10, 2, 60, 1, 0.3, 0.3, 0, 1},
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{10, 2, 30, 1, 0.3, 0.3, 0, 0},
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{10, 2, 10, 1, 0.3, 0.2, 0, 0}};
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#else
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std::vector<RateControlThresholds> rc_thresholds = {
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{10, 2, 20, 1, 0.3, 0.1, 0, 1},
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{5, 2, 5, 1, 0.3, 0.1, 0, 0},
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{4, 2, 1, 1, 0.3, 0.2, 0, 0}};
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#endif
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#if defined(WEBRTC_ARCH_ARM) || defined(WEBRTC_ARCH_ARM64)
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std::vector<QualityThresholds> quality_thresholds = {
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{31, 30, 0.85, 0.84}, {31.5, 30.5, 0.86, 0.84}, {30.5, 29, 0.83, 0.78}};
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#else
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std::vector<QualityThresholds> quality_thresholds = {
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{31, 30, 0.87, 0.86}, {32, 31, 0.89, 0.86}, {32, 30, 0.87, 0.82}};
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#endif
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fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
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}
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#if defined(WEBRTC_ANDROID)
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#define MAYBE_TemporalLayersVP8 DISABLED_TemporalLayersVP8
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#else
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#define MAYBE_TemporalLayersVP8 TemporalLayersVP8
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#endif
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TEST(VideoCodecTestLibvpx, MAYBE_TemporalLayersVP8) {
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auto config = CreateConfig();
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config.SetCodecSettings(cricket::kVp8CodecName, 1, 1, 3, true, true, false,
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kCifWidth, kCifHeight);
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const auto frame_checker = absl::make_unique<QpFrameChecker>();
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config.encoded_frame_checker = frame_checker.get();
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auto fixture = CreateVideoCodecTestFixture(config);
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std::vector<RateProfile> rate_profiles = {{200, 30, 150},
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{400, 30, kNumFramesLong}};
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#if defined(WEBRTC_ARCH_ARM) || defined(WEBRTC_ARCH_ARM64)
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std::vector<RateControlThresholds> rc_thresholds = {
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{10, 1, 2, 1, 0.2, 0.1, 0, 1}, {12, 2, 3, 1, 0.2, 0.1, 0, 1}};
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#else
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std::vector<RateControlThresholds> rc_thresholds = {
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{5, 1, 0, 1, 0.2, 0.1, 0, 1}, {10, 2, 0, 1, 0.2, 0.1, 0, 1}};
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#endif
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// Min SSIM drops because of high motion scene with complex backgound (trees).
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#if defined(WEBRTC_ARCH_ARM) || defined(WEBRTC_ARCH_ARM64)
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std::vector<QualityThresholds> quality_thresholds = {{31, 30, 0.85, 0.83},
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{31, 28, 0.85, 0.75}};
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#else
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std::vector<QualityThresholds> quality_thresholds = {{32, 30, 0.88, 0.85},
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{33, 30, 0.89, 0.83}};
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#endif
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fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
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}
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#if defined(WEBRTC_ANDROID)
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#define MAYBE_MultiresVP8 DISABLED_MultiresVP8
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#else
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#define MAYBE_MultiresVP8 MultiresVP8
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#endif
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TEST(VideoCodecTestLibvpx, MAYBE_MultiresVP8) {
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auto config = CreateConfig();
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config.filename = "ConferenceMotion_1280_720_50";
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config.filepath = ResourcePath(config.filename, "yuv");
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config.num_frames = 100;
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config.SetCodecSettings(cricket::kVp8CodecName, 3, 1, 3, true, true, false,
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1280, 720);
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const auto frame_checker = absl::make_unique<QpFrameChecker>();
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config.encoded_frame_checker = frame_checker.get();
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auto fixture = CreateVideoCodecTestFixture(config);
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std::vector<RateProfile> rate_profiles = {{1500, 30, config.num_frames}};
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#if defined(WEBRTC_ARCH_ARM) || defined(WEBRTC_ARCH_ARM64)
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std::vector<RateControlThresholds> rc_thresholds = {
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{3.5, 1.04, 6, 0.18, 0.14, 0.07, 0, 1}};
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#else
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std::vector<RateControlThresholds> rc_thresholds = {
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{5, 1, 5, 1, 0.3, 0.1, 0, 1}};
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#endif
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std::vector<QualityThresholds> quality_thresholds = {{34, 32, 0.90, 0.88}};
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fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
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}
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#if defined(WEBRTC_ANDROID)
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#define MAYBE_SimulcastVP8 DISABLED_SimulcastVP8
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#else
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#define MAYBE_SimulcastVP8 SimulcastVP8
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#endif
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TEST(VideoCodecTestLibvpx, MAYBE_SimulcastVP8) {
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auto config = CreateConfig();
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config.filename = "ConferenceMotion_1280_720_50";
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config.filepath = ResourcePath(config.filename, "yuv");
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config.num_frames = 100;
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config.SetCodecSettings(cricket::kVp8CodecName, 3, 1, 3, true, true, false,
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1280, 720);
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const auto frame_checker = absl::make_unique<QpFrameChecker>();
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config.encoded_frame_checker = frame_checker.get();
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|
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InternalEncoderFactory internal_encoder_factory;
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std::unique_ptr<VideoEncoderFactory> adapted_encoder_factory =
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absl::make_unique<FunctionVideoEncoderFactory>([&]() {
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return absl::make_unique<SimulcastEncoderAdapter>(
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&internal_encoder_factory, SdpVideoFormat(cricket::kVp8CodecName));
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});
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std::unique_ptr<InternalDecoderFactory> internal_decoder_factory(
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new InternalDecoderFactory());
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|
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auto fixture =
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CreateVideoCodecTestFixture(config, std::move(internal_decoder_factory),
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std::move(adapted_encoder_factory));
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|
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std::vector<RateProfile> rate_profiles = {{1500, 30, config.num_frames}};
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|
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std::vector<RateControlThresholds> rc_thresholds = {
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{20, 5, 90, 1, 0.5, 0.3, 0, 1}};
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std::vector<QualityThresholds> quality_thresholds = {{34, 32, 0.90, 0.88}};
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|
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fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
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}
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|
|
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#if defined(WEBRTC_ANDROID)
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#define MAYBE_SvcVP9 DISABLED_SvcVP9
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#else
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#define MAYBE_SvcVP9 SvcVP9
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#endif
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TEST(VideoCodecTestLibvpx, MAYBE_SvcVP9) {
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|
auto config = CreateConfig();
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config.filename = "ConferenceMotion_1280_720_50";
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|
config.filepath = ResourcePath(config.filename, "yuv");
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config.num_frames = 100;
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config.SetCodecSettings(cricket::kVp9CodecName, 1, 3, 3, true, true, false,
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|
1280, 720);
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const auto frame_checker = absl::make_unique<QpFrameChecker>();
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|
config.encoded_frame_checker = frame_checker.get();
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auto fixture = CreateVideoCodecTestFixture(config);
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|
|
|
std::vector<RateProfile> rate_profiles = {{1500, 30, config.num_frames}};
|
|
|
|
std::vector<RateControlThresholds> rc_thresholds = {
|
|
{5, 1, 5, 1, 0.3, 0.1, 0, 1}};
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|
std::vector<QualityThresholds> quality_thresholds = {{36, 34, 0.93, 0.90}};
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|
|
|
fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
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|
}
|
|
|
|
TEST(VideoCodecTestLibvpx, DISABLED_MultiresVP8RdPerf) {
|
|
auto config = CreateConfig();
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|
config.filename = "FourPeople_1280x720_30";
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|
config.filepath = ResourcePath(config.filename, "yuv");
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|
config.num_frames = 300;
|
|
config.print_frame_level_stats = true;
|
|
config.SetCodecSettings(cricket::kVp8CodecName, 3, 1, 3, true, true, false,
|
|
1280, 720);
|
|
const auto frame_checker = absl::make_unique<QpFrameChecker>();
|
|
config.encoded_frame_checker = frame_checker.get();
|
|
auto fixture = CreateVideoCodecTestFixture(config);
|
|
|
|
std::map<size_t, std::vector<VideoStatistics>> rd_stats;
|
|
for (size_t bitrate_kbps : kBitrateRdPerfKbps) {
|
|
std::vector<RateProfile> rate_profiles = {
|
|
{bitrate_kbps, 30, config.num_frames}};
|
|
|
|
fixture->RunTest(rate_profiles, nullptr, nullptr, nullptr);
|
|
|
|
rd_stats[bitrate_kbps] =
|
|
fixture->GetStats().SliceAndCalcLayerVideoStatistic(
|
|
kNumFirstFramesToSkipAtRdPerfAnalysis, config.num_frames - 1);
|
|
}
|
|
|
|
PrintRdPerf(rd_stats);
|
|
}
|
|
|
|
TEST(VideoCodecTestLibvpx, DISABLED_SvcVP9RdPerf) {
|
|
auto config = CreateConfig();
|
|
config.filename = "FourPeople_1280x720_30";
|
|
config.filepath = ResourcePath(config.filename, "yuv");
|
|
config.num_frames = 300;
|
|
config.print_frame_level_stats = true;
|
|
config.SetCodecSettings(cricket::kVp9CodecName, 1, 3, 3, true, true, false,
|
|
1280, 720);
|
|
const auto frame_checker = absl::make_unique<QpFrameChecker>();
|
|
config.encoded_frame_checker = frame_checker.get();
|
|
auto fixture = CreateVideoCodecTestFixture(config);
|
|
|
|
std::map<size_t, std::vector<VideoStatistics>> rd_stats;
|
|
for (size_t bitrate_kbps : kBitrateRdPerfKbps) {
|
|
std::vector<RateProfile> rate_profiles = {
|
|
{bitrate_kbps, 30, config.num_frames}};
|
|
|
|
fixture->RunTest(rate_profiles, nullptr, nullptr, nullptr);
|
|
|
|
rd_stats[bitrate_kbps] =
|
|
fixture->GetStats().SliceAndCalcLayerVideoStatistic(
|
|
kNumFirstFramesToSkipAtRdPerfAnalysis, config.num_frames - 1);
|
|
}
|
|
|
|
PrintRdPerf(rd_stats);
|
|
}
|
|
|
|
} // namespace test
|
|
} // namespace webrtc
|