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1. Bitrate allocation strategy unit test 2. Perf test determining minimal supported bitrate with and without strategy Bug: webrtc:8243 Change-Id: Idf675fbadddb66c77b2582052d6497971eb99ad6 Reviewed-on: https://webrtc-review.googlesource.com/4880 Reviewed-by: Stefan Holmer <stefan@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org> Commit-Queue: Alex Narest <alexnarest@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20886}
244 lines
11 KiB
C++
244 lines
11 KiB
C++
/*
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* Copyright 2017 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 "rtc_base/bitrateallocationstrategy.h"
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#include "rtc_base/gunit.h"
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namespace rtc {
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std::vector<const rtc::BitrateAllocationStrategy::TrackConfig*>
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MakeTrackConfigPtrsVector(
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const std::vector<BitrateAllocationStrategy::TrackConfig>& track_configs) {
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std::vector<const rtc::BitrateAllocationStrategy::TrackConfig*>
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track_config_ptrs(track_configs.size());
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int i = 0;
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for (const auto& c : track_configs) {
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track_config_ptrs[i++] = &c;
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}
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return track_config_ptrs;
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}
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TEST(BitrateAllocationStrategyTest, SetAllBitratesToMinimum) {
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const std::string audio_track_id = "audio_track";
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constexpr uint32_t min_audio_bitrate = 6000;
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constexpr uint32_t max_audio_bitrate = 64000;
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const std::string video_track_id = "video_track";
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constexpr uint32_t min_video_bitrate = 30000;
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constexpr uint32_t max_video_bitrate = 300000;
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constexpr uint32_t min_other_bitrate = 3000;
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constexpr uint32_t max_other_bitrate = 30000;
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std::vector<BitrateAllocationStrategy::TrackConfig> track_configs = {
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BitrateAllocationStrategy::TrackConfig(
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min_audio_bitrate, max_audio_bitrate, false, audio_track_id),
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BitrateAllocationStrategy::TrackConfig(
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min_video_bitrate, max_video_bitrate, false, video_track_id),
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BitrateAllocationStrategy::TrackConfig(min_other_bitrate,
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max_other_bitrate, false, "")};
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std::vector<const rtc::BitrateAllocationStrategy::TrackConfig*>
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track_config_ptrs = MakeTrackConfigPtrsVector(track_configs);
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std::vector<uint32_t> allocations =
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BitrateAllocationStrategy::SetAllBitratesToMinimum(track_config_ptrs);
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EXPECT_EQ(min_audio_bitrate, allocations[0]);
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EXPECT_EQ(min_video_bitrate, allocations[1]);
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EXPECT_EQ(min_other_bitrate, allocations[2]);
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}
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TEST(BitrateAllocationStrategyTest, DistributeBitratesEvenly) {
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const std::string audio_track_id = "audio_track";
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constexpr uint32_t min_audio_bitrate = 16000;
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constexpr uint32_t max_audio_bitrate = 64000;
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const std::string video_track_id = "video_track";
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constexpr uint32_t min_video_bitrate = 30000;
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constexpr uint32_t max_video_bitrate = 300000;
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constexpr uint32_t min_other_bitrate = 3000;
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constexpr uint32_t max_other_bitrate = 30000;
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constexpr uint32_t available_bitrate = 52000;
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constexpr uint32_t even_bitrate_increase =
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(available_bitrate - min_audio_bitrate - min_video_bitrate -
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min_other_bitrate) /
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3;
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std::vector<BitrateAllocationStrategy::TrackConfig> track_configs = {
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BitrateAllocationStrategy::TrackConfig(
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min_audio_bitrate, max_audio_bitrate, false, audio_track_id),
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BitrateAllocationStrategy::TrackConfig(
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min_video_bitrate, max_video_bitrate, false, video_track_id),
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BitrateAllocationStrategy::TrackConfig(min_other_bitrate,
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max_other_bitrate, false, "")};
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std::vector<const rtc::BitrateAllocationStrategy::TrackConfig*>
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track_config_ptrs = MakeTrackConfigPtrsVector(track_configs);
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std::vector<uint32_t> allocations =
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BitrateAllocationStrategy::DistributeBitratesEvenly(track_config_ptrs,
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available_bitrate);
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EXPECT_EQ(min_audio_bitrate + even_bitrate_increase, allocations[0]);
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EXPECT_EQ(min_video_bitrate + even_bitrate_increase, allocations[1]);
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EXPECT_EQ(min_other_bitrate + even_bitrate_increase, allocations[2]);
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}
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std::vector<uint32_t> RunAudioPriorityAllocation(
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uint32_t sufficient_audio_bitrate,
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std::string audio_track_id,
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uint32_t min_audio_bitrate,
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uint32_t max_audio_bitrate,
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std::string video_track_id,
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uint32_t min_video_bitrate,
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uint32_t max_video_bitrate,
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uint32_t min_other_bitrate,
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uint32_t max_other_bitrate,
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uint32_t available_bitrate) {
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AudioPriorityBitrateAllocationStrategy allocation_strategy(
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audio_track_id, sufficient_audio_bitrate);
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std::vector<BitrateAllocationStrategy::TrackConfig> track_configs = {
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BitrateAllocationStrategy::TrackConfig(
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min_audio_bitrate, max_audio_bitrate, false, audio_track_id),
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BitrateAllocationStrategy::TrackConfig(
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min_video_bitrate, max_video_bitrate, false, video_track_id),
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BitrateAllocationStrategy::TrackConfig(min_other_bitrate,
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max_other_bitrate, false, "")};
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std::vector<const rtc::BitrateAllocationStrategy::TrackConfig*>
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track_config_ptrs = MakeTrackConfigPtrsVector(track_configs);
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return allocation_strategy.AllocateBitrates(available_bitrate,
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track_config_ptrs);
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}
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// Test that when the available bitrate is less than the sum of the minimum
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// bitrates, the minimum bitrate is allocated for each track.
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TEST(AudioPriorityBitrateAllocationStrategyTest, MinAllocateBitrate) {
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constexpr uint32_t sufficient_audio_bitrate = 16000;
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const std::string audio_track_id = "audio_track";
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constexpr uint32_t min_audio_bitrate = 6000;
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constexpr uint32_t max_audio_bitrate = 64000;
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const std::string video_track_id = "video_track";
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constexpr uint32_t min_video_bitrate = 30000;
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constexpr uint32_t max_video_bitrate = 300000;
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constexpr uint32_t min_other_bitrate = 3000;
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constexpr uint32_t max_other_bitrate = 30000;
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constexpr uint32_t available_bitrate = 10000;
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std::vector<uint32_t> allocations = RunAudioPriorityAllocation(
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sufficient_audio_bitrate, audio_track_id, min_audio_bitrate,
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max_audio_bitrate, video_track_id, min_video_bitrate, max_video_bitrate,
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min_other_bitrate, max_other_bitrate, available_bitrate);
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EXPECT_EQ(min_audio_bitrate, allocations[0]);
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EXPECT_EQ(min_video_bitrate, allocations[1]);
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EXPECT_EQ(min_other_bitrate, allocations[2]);
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}
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// Test that when the available bitrate is more than the sum of the max
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// bitrates, the max bitrate is allocated for each track.
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TEST(AudioPriorityBitrateAllocationStrategyTest, MaxAllocateBitrate) {
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constexpr uint32_t sufficient_audio_bitrate = 16000;
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const std::string audio_track_id = "audio_track";
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constexpr uint32_t min_audio_bitrate = 6000;
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constexpr uint32_t max_audio_bitrate = 64000;
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const std::string video_track_id = "video_track";
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constexpr uint32_t min_video_bitrate = 30000;
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constexpr uint32_t max_video_bitrate = 300000;
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constexpr uint32_t min_other_bitrate = 3000;
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constexpr uint32_t max_other_bitrate = 30000;
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constexpr uint32_t available_bitrate = 400000;
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std::vector<uint32_t> allocations = RunAudioPriorityAllocation(
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sufficient_audio_bitrate, audio_track_id, min_audio_bitrate,
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max_audio_bitrate, video_track_id, min_video_bitrate, max_video_bitrate,
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min_other_bitrate, max_other_bitrate, available_bitrate);
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// TODO(bugs.webrtc.org/8541): Until the bug is fixed not audio streams will
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// get up to kTransmissionMaxBitrateMultiplier*max_bitrate
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constexpr uint32_t video_bitrate =
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(available_bitrate - max_audio_bitrate - max_other_bitrate * 2);
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EXPECT_EQ(max_audio_bitrate, allocations[0]);
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EXPECT_EQ(video_bitrate, allocations[1]);
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EXPECT_EQ(max_other_bitrate * 2, allocations[2]);
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}
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// Test that audio track will get up to sufficient bitrate before video and
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// other bitrate will be allocated.
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TEST(AudioPriorityBitrateAllocationStrategyTest, AudioPriorityAllocateBitrate) {
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constexpr uint32_t sufficient_audio_bitrate = 16000;
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const std::string audio_track_id = "audio_track";
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constexpr uint32_t min_audio_bitrate = 6000;
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constexpr uint32_t max_audio_bitrate = 64000;
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const std::string video_track_id = "video_track";
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constexpr uint32_t min_video_bitrate = 30000;
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constexpr uint32_t max_video_bitrate = 300000;
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constexpr uint32_t min_other_bitrate = 3000;
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constexpr uint32_t max_other_bitrate = 30000;
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constexpr uint32_t available_bitrate = 49000;
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std::vector<uint32_t> allocations = RunAudioPriorityAllocation(
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sufficient_audio_bitrate, audio_track_id, min_audio_bitrate,
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max_audio_bitrate, video_track_id, min_video_bitrate, max_video_bitrate,
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min_other_bitrate, max_other_bitrate, available_bitrate);
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EXPECT_EQ(sufficient_audio_bitrate, allocations[0]);
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EXPECT_EQ(min_video_bitrate, allocations[1]);
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EXPECT_EQ(min_other_bitrate, allocations[2]);
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}
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// Test that bitrate will be allocated evenly after sufficient audio bitrate is
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// allocated.
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TEST(AudioPriorityBitrateAllocationStrategyTest, EvenAllocateBitrate) {
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constexpr uint32_t sufficient_audio_bitrate = 16000;
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const std::string audio_track_id = "audio_track";
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constexpr uint32_t min_audio_bitrate = 6000;
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constexpr uint32_t max_audio_bitrate = 64000;
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const std::string video_track_id = "video_track";
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constexpr uint32_t min_video_bitrate = 30000;
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constexpr uint32_t max_video_bitrate = 300000;
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constexpr uint32_t min_other_bitrate = 3000;
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constexpr uint32_t max_other_bitrate = 30000;
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constexpr uint32_t available_bitrate = 52000;
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constexpr uint32_t even_bitrate_increase =
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(available_bitrate - sufficient_audio_bitrate - min_video_bitrate -
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min_other_bitrate) /
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3;
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std::vector<uint32_t> allocations = RunAudioPriorityAllocation(
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sufficient_audio_bitrate, audio_track_id, min_audio_bitrate,
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max_audio_bitrate, video_track_id, min_video_bitrate, max_video_bitrate,
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min_other_bitrate, max_other_bitrate, available_bitrate);
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EXPECT_EQ(sufficient_audio_bitrate + even_bitrate_increase, allocations[0]);
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EXPECT_EQ(min_video_bitrate + even_bitrate_increase, allocations[1]);
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EXPECT_EQ(min_other_bitrate + even_bitrate_increase, allocations[2]);
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}
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// Test that bitrate will be allocated to video after audio and other max
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// allocation.
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TEST(AudioPriorityBitrateAllocationStrategyTest, VideoAllocateBitrate) {
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constexpr uint32_t sufficient_audio_bitrate = 16000;
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const std::string audio_track_id = "audio_track";
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constexpr uint32_t min_audio_bitrate = 6000;
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constexpr uint32_t max_audio_bitrate = 64000;
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const std::string video_track_id = "video_track";
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constexpr uint32_t min_video_bitrate = 30000;
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constexpr uint32_t max_video_bitrate = 300000;
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constexpr uint32_t min_other_bitrate = 3000;
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constexpr uint32_t max_other_bitrate = 30000;
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constexpr uint32_t available_bitrate = 200000;
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constexpr uint32_t video_bitrate =
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available_bitrate - max_audio_bitrate - max_other_bitrate;
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std::vector<uint32_t> allocations = RunAudioPriorityAllocation(
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sufficient_audio_bitrate, audio_track_id, min_audio_bitrate,
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max_audio_bitrate, video_track_id, min_video_bitrate, max_video_bitrate,
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min_other_bitrate, max_other_bitrate, available_bitrate);
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EXPECT_EQ(max_audio_bitrate, allocations[0]);
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EXPECT_EQ(video_bitrate, allocations[1]);
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EXPECT_EQ(max_other_bitrate, allocations[2]);
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}
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} // namespace rtc
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