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/*
* Copyright 2021 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 "rtc_base/experiments/encoder_info_settings.h"
#include <optional>
#include <vector>
#include "api/field_trials.h"
#include "api/video_codecs/video_encoder.h"
#include "test/gmock.h"
#include "test/gtest.h"
namespace webrtc {
TEST(SimulcastEncoderAdapterSettingsTest, NoValuesWithoutFieldTrial) {
FieldTrials field_trials("");
SimulcastEncoderAdapterEncoderInfoSettings settings(field_trials);
EXPECT_EQ(std::nullopt, settings.requested_resolution_alignment());
EXPECT_FALSE(settings.apply_alignment_to_all_simulcast_layers());
EXPECT_TRUE(settings.resolution_bitrate_limits().empty());
}
TEST(SimulcastEncoderAdapterSettingsTest, NoValueForInvalidAlignment) {
FieldTrials field_trials(
"WebRTC-SimulcastEncoderAdapter-GetEncoderInfoOverride/"
"requested_resolution_alignment:0/");
SimulcastEncoderAdapterEncoderInfoSettings settings(field_trials);
EXPECT_EQ(std::nullopt, settings.requested_resolution_alignment());
}
TEST(SimulcastEncoderAdapterSettingsTest, GetResolutionAlignment) {
FieldTrials field_trials(
"WebRTC-SimulcastEncoderAdapter-GetEncoderInfoOverride/"
"requested_resolution_alignment:2/");
SimulcastEncoderAdapterEncoderInfoSettings settings(field_trials);
EXPECT_EQ(2u, settings.requested_resolution_alignment());
EXPECT_FALSE(settings.apply_alignment_to_all_simulcast_layers());
EXPECT_TRUE(settings.resolution_bitrate_limits().empty());
}
TEST(SimulcastEncoderAdapterSettingsTest, GetApplyAlignment) {
FieldTrials field_trials(
"WebRTC-SimulcastEncoderAdapter-GetEncoderInfoOverride/"
"requested_resolution_alignment:3,"
"apply_alignment_to_all_simulcast_layers/");
SimulcastEncoderAdapterEncoderInfoSettings settings(field_trials);
EXPECT_EQ(3u, settings.requested_resolution_alignment());
EXPECT_TRUE(settings.apply_alignment_to_all_simulcast_layers());
EXPECT_TRUE(settings.resolution_bitrate_limits().empty());
}
TEST(SimulcastEncoderAdapterSettingsTest, GetResolutionBitrateLimits) {
FieldTrials field_trials(
"WebRTC-SimulcastEncoderAdapter-GetEncoderInfoOverride/"
"frame_size_pixels:123,"
"min_start_bitrate_bps:11000,"
"min_bitrate_bps:44000,"
"max_bitrate_bps:77000/");
SimulcastEncoderAdapterEncoderInfoSettings settings(field_trials);
EXPECT_EQ(std::nullopt, settings.requested_resolution_alignment());
EXPECT_FALSE(settings.apply_alignment_to_all_simulcast_layers());
EXPECT_THAT(settings.resolution_bitrate_limits(),
::testing::ElementsAre(VideoEncoder::ResolutionBitrateLimits{
123, 11000, 44000, 77000}));
}
TEST(SimulcastEncoderAdapterSettingsTest, GetResolutionBitrateLimitsWithList) {
FieldTrials field_trials(
"WebRTC-SimulcastEncoderAdapter-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/");
SimulcastEncoderAdapterEncoderInfoSettings settings(field_trials);
EXPECT_THAT(
settings.resolution_bitrate_limits(),
::testing::ElementsAre(
VideoEncoder::ResolutionBitrateLimits{123, 11000, 44000, 77000},
VideoEncoder::ResolutionBitrateLimits{456, 22000, 55000, 88000},
VideoEncoder::ResolutionBitrateLimits{789, 33000, 66000, 99000}));
}
TEST(EncoderSettingsTest, CommonSettingsUsedIfEncoderNameUnspecified) {
FieldTrials field_trials(
"WebRTC-VP8-GetEncoderInfoOverride/requested_resolution_alignment:2/"
"WebRTC-GetEncoderInfoOverride/requested_resolution_alignment:3/");
LibvpxVp8EncoderInfoSettings vp8_settings(field_trials);
EXPECT_EQ(2u, vp8_settings.requested_resolution_alignment());
LibvpxVp9EncoderInfoSettings vp9_settings(field_trials);
EXPECT_EQ(3u, vp9_settings.requested_resolution_alignment());
}
TEST(GetSinglecastBitrateLimitForResolutionWhenQpIsUntrustedTests,
LinearInterpolationUnderflow) {
std::optional<int> frame_size_pixels = 480 * 360;
std::vector<VideoEncoder::ResolutionBitrateLimits> resolution_bitrate_limits(
{{1280 * 720, 1500000, 30000, 2500000},
{1920 * 1080, 2500000, 30000, 4000000}});
const auto resolutionBitrateLimit = EncoderInfoSettings::
GetSinglecastBitrateLimitForResolutionWhenQpIsUntrusted(
frame_size_pixels, resolution_bitrate_limits);
EXPECT_TRUE(resolutionBitrateLimit.has_value());
EXPECT_EQ(resolutionBitrateLimit.value(), resolution_bitrate_limits.front());
}
TEST(GetSinglecastBitrateLimitForResolutionWhenQpIsUntrustedTests,
LinearInterpolationOverflow) {
std::optional<int> frame_size_pixels = 4096 * 2160;
std::vector<VideoEncoder::ResolutionBitrateLimits> resolution_bitrate_limits(
{{1280 * 720, 1500000, 30000, 2500000},
{1920 * 1080, 2500000, 30000, 4000000}});
const auto resolutionBitrateLimit = EncoderInfoSettings::
GetSinglecastBitrateLimitForResolutionWhenQpIsUntrusted(
frame_size_pixels, resolution_bitrate_limits);
EXPECT_TRUE(resolutionBitrateLimit.has_value());
EXPECT_EQ(resolutionBitrateLimit.value(), resolution_bitrate_limits.back());
}
TEST(GetSinglecastBitrateLimitForResolutionWhenQpIsUntrustedTests,
LinearInterpolationExactMatch) {
std::optional<int> frame_size_pixels = 1920 * 1080;
VideoEncoder::ResolutionBitrateLimits expected_match{1920 * 1080, 2500000,
30000, 4000000};
std::vector<VideoEncoder::ResolutionBitrateLimits> resolution_bitrate_limits(
{{1280 * 720, 1500000, 30000, 2500000},
expected_match,
{4096 * 2160, 4000000, 30000, 8000000}});
const auto resolutionBitrateLimit = EncoderInfoSettings::
GetSinglecastBitrateLimitForResolutionWhenQpIsUntrusted(
frame_size_pixels, resolution_bitrate_limits);
EXPECT_TRUE(resolutionBitrateLimit.has_value());
EXPECT_EQ(resolutionBitrateLimit.value(), expected_match);
}
} // namespace webrtc
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