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video_quality_test.cc
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/*
* Copyright (c) 2015 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/video_quality_test.h"
#include <stdio.h>
#include <algorithm>
#include <deque>
#include <map>
#include <memory>
#include <string>
#include <vector>
#include "api/fec_controller_override.h"
#include "api/rtc_event_log_output_file.h"
#include "api/task_queue/default_task_queue_factory.h"
#include "api/task_queue/task_queue_base.h"
#include "api/test/create_frame_generator.h"
#include "api/video/builtin_video_bitrate_allocator_factory.h"
#include "api/video_codecs/video_encoder.h"
#include "call/fake_network_pipe.h"
#include "call/simulated_network.h"
#include "media/engine/adm_helpers.h"
#include "media/engine/encoder_simulcast_proxy.h"
#include "media/engine/fake_video_codec_factory.h"
#include "media/engine/internal_encoder_factory.h"
#include "media/engine/webrtc_video_engine.h"
#include "modules/audio_device/include/audio_device.h"
#include "modules/audio_mixer/audio_mixer_impl.h"
#include "modules/video_coding/codecs/h264/include/h264.h"
#include "modules/video_coding/codecs/multiplex/include/multiplex_decoder_adapter.h"
#include "modules/video_coding/codecs/multiplex/include/multiplex_encoder_adapter.h"
#include "modules/video_coding/codecs/vp8/include/vp8.h"
#include "modules/video_coding/codecs/vp9/include/vp9.h"
#include "modules/video_coding/utility/ivf_file_writer.h"
#include "rtc_base/strings/string_builder.h"
#include "rtc_base/task_queue_for_test.h"
#include "test/platform_video_capturer.h"
#include "test/run_loop.h"
#include "test/testsupport/file_utils.h"
#include "test/video_renderer.h"
#include "video/frame_dumping_decoder.h"
#ifdef WEBRTC_WIN
#include "modules/audio_device/include/audio_device_factory.h"
#endif
namespace webrtc {
namespace {
enum : int { // The first valid value is 1.
kAbsSendTimeExtensionId = 1,
kGenericFrameDescriptorExtensionId00,
kGenericFrameDescriptorExtensionId01,
kTransportSequenceNumberExtensionId,
kVideoContentTypeExtensionId,
kVideoTimingExtensionId,
};
constexpr char kSyncGroup[] = "av_sync";
constexpr int kOpusMinBitrateBps = 6000;
constexpr int kOpusBitrateFbBps = 32000;
constexpr int kFramesSentInQuickTest = 1;
constexpr uint32_t kThumbnailSendSsrcStart = 0xE0000;
constexpr uint32_t kThumbnailRtxSsrcStart = 0xF0000;
constexpr int kDefaultMaxQp = cricket::WebRtcVideoChannel::kDefaultQpMax;
const VideoEncoder::Capabilities kCapabilities(false);
std::pair<uint32_t, uint32_t> GetMinMaxBitratesBps(const VideoCodec& codec,
size_t spatial_idx) {
uint32_t min_bitrate = codec.minBitrate;
uint32_t max_bitrate = codec.maxBitrate;
if (spatial_idx < codec.numberOfSimulcastStreams) {
min_bitrate =
std::max(min_bitrate, codec.simulcastStream[spatial_idx].minBitrate);
max_bitrate =
std::min(max_bitrate, codec.simulcastStream[spatial_idx].maxBitrate);
}
if (codec.codecType == VideoCodecType::kVideoCodecVP9 &&
spatial_idx < codec.VP9().numberOfSpatialLayers) {
min_bitrate =
std::max(min_bitrate, codec.spatialLayers[spatial_idx].minBitrate);
max_bitrate =
std::min(max_bitrate, codec.spatialLayers[spatial_idx].maxBitrate);
}
max_bitrate = std::max(max_bitrate, min_bitrate);
return {min_bitrate * 1000, max_bitrate * 1000};
}
class VideoStreamFactory
: public VideoEncoderConfig::VideoStreamFactoryInterface {
public:
explicit VideoStreamFactory(const std::vector<VideoStream>& streams)
: streams_(streams) {}
private:
std::vector<VideoStream> CreateEncoderStreams(
int width,
int height,
const VideoEncoderConfig& encoder_config) override {
// The highest layer must match the incoming resolution.
std::vector<VideoStream> streams = streams_;
streams[streams_.size() - 1].height = height;
streams[streams_.size() - 1].width = width;
streams[0].bitrate_priority = encoder_config.bitrate_priority;
return streams;
}
std::vector<VideoStream> streams_;
};
// This wrapper provides two features needed by the video quality tests:
// 1. Invoke VideoAnalyzer callbacks before and after encoding each frame.
// 2. Write the encoded frames to file, one file per simulcast layer.
class QualityTestVideoEncoder : public VideoEncoder,
private EncodedImageCallback {
public:
QualityTestVideoEncoder(std::unique_ptr<VideoEncoder> encoder,
VideoAnalyzer* analyzer,
std::vector<FileWrapper> files,
double overshoot_factor)
: encoder_(std::move(encoder)),
overshoot_factor_(overshoot_factor),
analyzer_(analyzer) {
for (FileWrapper& file : files) {
writers_.push_back(
IvfFileWriter::Wrap(std::move(file), /* byte_limit= */ 100000000));
}
}
// Implement VideoEncoder
void SetFecControllerOverride(
FecControllerOverride* fec_controller_override) {
// Ignored.
}
int32_t InitEncode(const VideoCodec* codec_settings,
const Settings& settings) override {
codec_settings_ = *codec_settings;
return encoder_->InitEncode(codec_settings, settings);
}
int32_t RegisterEncodeCompleteCallback(
EncodedImageCallback* callback) override {
callback_ = callback;
return encoder_->RegisterEncodeCompleteCallback(this);
}
int32_t Release() override { return encoder_->Release(); }
int32_t Encode(const VideoFrame& frame,
const std::vector<VideoFrameType>* frame_types) {
if (analyzer_) {
analyzer_->PreEncodeOnFrame(frame);
}
return encoder_->Encode(frame, frame_types);
}
void SetRates(const RateControlParameters& parameters) override {
RTC_DCHECK_GT(overshoot_factor_, 0.0);
if (overshoot_factor_ == 1.0) {
encoder_->SetRates(parameters);
return;
}
// Simulating encoder overshooting target bitrate, by configuring actual
// encoder too high. Take care not to adjust past limits of config,
// otherwise encoders may crash on DCHECK.
VideoBitrateAllocation overshot_allocation;
for (size_t si = 0; si < kMaxSpatialLayers; ++si) {
const uint32_t spatial_layer_bitrate_bps =
parameters.bitrate.GetSpatialLayerSum(si);
if (spatial_layer_bitrate_bps == 0) {
continue;
}
uint32_t min_bitrate_bps;
uint32_t max_bitrate_bps;
std::tie(min_bitrate_bps, max_bitrate_bps) =
GetMinMaxBitratesBps(codec_settings_, si);
double overshoot_factor = overshoot_factor_;
const uint32_t corrected_bitrate = rtc::checked_cast<uint32_t>(
overshoot_factor * spatial_layer_bitrate_bps);
if (corrected_bitrate < min_bitrate_bps) {
overshoot_factor = min_bitrate_bps / spatial_layer_bitrate_bps;
} else if (corrected_bitrate > max_bitrate_bps) {
overshoot_factor = max_bitrate_bps / spatial_layer_bitrate_bps;
}
for (size_t ti = 0; ti < kMaxTemporalStreams; ++ti) {
if (parameters.bitrate.HasBitrate(si, ti)) {
overshot_allocation.SetBitrate(
si, ti,
rtc::checked_cast<uint32_t>(
overshoot_factor * parameters.bitrate.GetBitrate(si, ti)));
}
}
}
return encoder_->SetRates(
RateControlParameters(overshot_allocation, parameters.framerate_fps,
parameters.bandwidth_allocation));
}
void OnPacketLossRateUpdate(float packet_loss_rate) override {
encoder_->OnPacketLossRateUpdate(packet_loss_rate);
}
void OnRttUpdate(int64_t rtt_ms) override { encoder_->OnRttUpdate(rtt_ms); }
void OnLossNotification(const LossNotification& loss_notification) override {
encoder_->OnLossNotification(loss_notification);
}
EncoderInfo GetEncoderInfo() const override {
EncoderInfo info = encoder_->GetEncoderInfo();
if (overshoot_factor_ != 1.0) {
// We're simulating bad encoder, don't forward trusted setting
// from eg libvpx.
info.has_trusted_rate_controller = false;
}
return info;
}
private:
// Implement EncodedImageCallback
Result OnEncodedImage(const EncodedImage& encoded_image,
const CodecSpecificInfo* codec_specific_info,
const RTPFragmentationHeader* fragmentation) override {
if (codec_specific_info) {
int simulcast_index;
if (codec_specific_info->codecType == kVideoCodecVP9) {
simulcast_index = 0;
} else {
simulcast_index = encoded_image.SpatialIndex().value_or(0);
}
RTC_DCHECK_GE(simulcast_index, 0);
if (analyzer_) {
analyzer_->PostEncodeOnFrame(simulcast_index,
encoded_image.Timestamp());
}
if (static_cast<size_t>(simulcast_index) < writers_.size()) {
writers_[simulcast_index]->WriteFrame(encoded_image,
codec_specific_info->codecType);
}
}
return callback_->OnEncodedImage(encoded_image, codec_specific_info,
fragmentation);
}
void OnDroppedFrame(DropReason reason) override {
callback_->OnDroppedFrame(reason);
}
const std::unique_ptr<VideoEncoder> encoder_;
const double overshoot_factor_;
VideoAnalyzer* const analyzer_;
std::vector<std::unique_ptr<IvfFileWriter>> writers_;
EncodedImageCallback* callback_ = nullptr;
VideoCodec codec_settings_;
};
} // namespace
std::unique_ptr<VideoDecoder> VideoQualityTest::CreateVideoDecoder(
const SdpVideoFormat& format) {
std::unique_ptr<VideoDecoder> decoder;
if (format.name == "multiplex") {
decoder = std::make_unique<MultiplexDecoderAdapter>(
decoder_factory_.get(), SdpVideoFormat(cricket::kVp9CodecName));
} else if (format.name == "FakeCodec") {
decoder = webrtc::FakeVideoDecoderFactory::CreateVideoDecoder();
} else {
decoder = decoder_factory_->CreateVideoDecoder(format);
}
if (!params_.logging.encoded_frame_base_path.empty()) {
rtc::StringBuilder str;
str << receive_logs_++;
std::string path =
params_.logging.encoded_frame_base_path + "." + str.str() + ".recv.ivf";
decoder = CreateFrameDumpingDecoderWrapper(
std::move(decoder), FileWrapper::OpenWriteOnly(path));
}
return decoder;
}
std::unique_ptr<VideoEncoder> VideoQualityTest::CreateVideoEncoder(
const SdpVideoFormat& format,
VideoAnalyzer* analyzer) {
std::unique_ptr<VideoEncoder> encoder;
if (format.name == "VP8") {
encoder =
std::make_unique<EncoderSimulcastProxy>(encoder_factory_.get(), format);
} else if (format.name == "multiplex") {
encoder = std::make_unique<MultiplexEncoderAdapter>(
encoder_factory_.get(), SdpVideoFormat(cricket::kVp9CodecName));
} else if (format.name == "FakeCodec") {
encoder = webrtc::FakeVideoEncoderFactory::CreateVideoEncoder();
} else {
encoder = encoder_factory_->CreateVideoEncoder(format);
}
std::vector<FileWrapper> encoded_frame_dump_files;
if (!params_.logging.encoded_frame_base_path.empty()) {
char ss_buf[100];
rtc::SimpleStringBuilder sb(ss_buf);
sb << send_logs_++;
std::string prefix =
params_.logging.encoded_frame_base_path + "." + sb.str() + ".send.";
encoded_frame_dump_files.push_back(
FileWrapper::OpenWriteOnly(prefix + "1.ivf"));
encoded_frame_dump_files.push_back(
FileWrapper::OpenWriteOnly(prefix + "2.ivf"));
encoded_frame_dump_files.push_back(
FileWrapper::OpenWriteOnly(prefix + "3.ivf"));
}
double overshoot_factor = 1.0;
// Match format to either of the streams in dual-stream mode in order to get
// the overshoot factor. This is not very robust but we can't know for sure
// which stream this encoder is meant for, from within the factory.
if (format ==
SdpVideoFormat(params_.video[0].codec, params_.video[0].sdp_params)) {
overshoot_factor = params_.video[0].encoder_overshoot_factor;
} else if (format == SdpVideoFormat(params_.video[1].codec,
params_.video[1].sdp_params)) {
overshoot_factor = params_.video[1].encoder_overshoot_factor;
}
if (overshoot_factor == 0.0) {
// If params were zero-initialized, set to 1.0 instead.
overshoot_factor = 1.0;
}
if (analyzer || !encoded_frame_dump_files.empty() || overshoot_factor > 1.0) {
encoder = std::make_unique<QualityTestVideoEncoder>(
std::move(encoder), analyzer, std::move(encoded_frame_dump_files),
overshoot_factor);
}
return encoder;
}
VideoQualityTest::VideoQualityTest(
std::unique_ptr<InjectionComponents> injection_components)
: clock_(Clock::GetRealTimeClock()),
task_queue_factory_(CreateDefaultTaskQueueFactory()),
rtc_event_log_factory_(task_queue_factory_.get()),
video_decoder_factory_([this](const SdpVideoFormat& format) {
return this->CreateVideoDecoder(format);
}),
video_encoder_factory_([this](const SdpVideoFormat& format) {
return this->CreateVideoEncoder(format, nullptr);
}),
video_encoder_factory_with_analyzer_(
[this](const SdpVideoFormat& format) {
return this->CreateVideoEncoder(format, analyzer_.get());
}),
video_bitrate_allocator_factory_(
CreateBuiltinVideoBitrateAllocatorFactory()),
receive_logs_(0),
send_logs_(0),
injection_components_(std::move(injection_components)),
num_video_streams_(0) {
if (injection_components_ == nullptr) {
injection_components_ = std::make_unique<InjectionComponents>();
}
if (injection_components_->video_decoder_factory != nullptr) {
decoder_factory_ = std::move(injection_components_->video_decoder_factory);
} else {
decoder_factory_ = std::make_unique<InternalDecoderFactory>();
}
if (injection_components_->video_encoder_factory != nullptr) {
encoder_factory_ = std::move(injection_components_->video_encoder_factory);
} else {
encoder_factory_ = std::make_unique<InternalEncoderFactory>();
}
payload_type_map_ = test::CallTest::payload_type_map_;
RTC_DCHECK(payload_type_map_.find(kPayloadTypeH264) ==
payload_type_map_.end());
RTC_DCHECK(payload_type_map_.find(kPayloadTypeVP8) ==
payload_type_map_.end());
RTC_DCHECK(payload_type_map_.find(kPayloadTypeVP9) ==
payload_type_map_.end());
RTC_DCHECK(payload_type_map_.find(kPayloadTypeGeneric) ==
payload_type_map_.end());
payload_type_map_[kPayloadTypeH264] = webrtc::MediaType::VIDEO;
payload_type_map_[kPayloadTypeVP8] = webrtc::MediaType::VIDEO;
payload_type_map_[kPayloadTypeVP9] = webrtc::MediaType::VIDEO;
payload_type_map_[kPayloadTypeGeneric] = webrtc::MediaType::VIDEO;
fec_controller_factory_ =
std::move(injection_components_->fec_controller_factory);
network_state_predictor_factory_ =
std::move(injection_components_->network_state_predictor_factory);
network_controller_factory_ =
std::move(injection_components_->network_controller_factory);
}
VideoQualityTest::Params::Params()
: call({false, false, BitrateConstraints(), 0}),
video{{false,
640,
480,
30,
50,
800,
800,
false,
"VP8",
1,
-1,
0,
false,
false,
false,
"",
0,
{},
0.0},
{false,
640,
480,
30,
50,
800,
800,
false,
"VP8",
1,
-1,
0,
false,
false,
false,
"",
0,
{},
0.0}},
audio({false, false, false, false}),
screenshare{{false, false, 10, 0}, {false, false, 10, 0}},
analyzer({"", 0.0, 0.0, 0, "", ""}),
config(absl::nullopt),
ss{{std::vector<VideoStream>(), 0, 0, -1, InterLayerPredMode::kOn,
std::vector<SpatialLayer>()},
{std::vector<VideoStream>(), 0, 0, -1, InterLayerPredMode::kOn,
std::vector<SpatialLayer>()}},
logging({"", "", ""}) {}
VideoQualityTest::Params::~Params() = default;
VideoQualityTest::InjectionComponents::InjectionComponents() = default;
VideoQualityTest::InjectionComponents::~InjectionComponents() = default;
void VideoQualityTest::TestBody() {}
std::string VideoQualityTest::GenerateGraphTitle() const {
rtc::StringBuilder ss;
ss << params_.video[0].codec;
ss << " (" << params_.video[0].target_bitrate_bps / 1000 << "kbps";
ss << ", " << params_.video[0].fps << " FPS";
if (params_.screenshare[0].scroll_duration)
ss << ", " << params_.screenshare[0].scroll_duration << "s scroll";
if (params_.ss[0].streams.size() > 1)
ss << ", Stream #" << params_.ss[0].selected_stream;
if (params_.ss[0].num_spatial_layers > 1)
ss << ", Layer #" << params_.ss[0].selected_sl;
ss << ")";
return ss.Release();
}
void VideoQualityTest::CheckParamsAndInjectionComponents() {
if (injection_components_ == nullptr) {
injection_components_ = std::make_unique<InjectionComponents>();
}
if (!params_.config && injection_components_->sender_network == nullptr &&
injection_components_->receiver_network == nullptr) {
params_.config = BuiltInNetworkBehaviorConfig();
}
RTC_CHECK(
(params_.config && injection_components_->sender_network == nullptr &&
injection_components_->receiver_network == nullptr) ||
(!params_.config && injection_components_->sender_network != nullptr &&
injection_components_->receiver_network != nullptr));
for (size_t video_idx = 0; video_idx < num_video_streams_; ++video_idx) {
// Iterate over primary and secondary video streams.
if (!params_.video[video_idx].enabled)
return;
// Add a default stream in none specified.
if (params_.ss[video_idx].streams.empty())
params_.ss[video_idx].streams.push_back(
VideoQualityTest::DefaultVideoStream(params_, video_idx));
if (params_.ss[video_idx].num_spatial_layers == 0)
params_.ss[video_idx].num_spatial_layers = 1;
if (params_.config) {
if (params_.config->loss_percent != 0 ||
params_.config->queue_length_packets != 0) {
// Since LayerFilteringTransport changes the sequence numbers, we can't
// use that feature with pack loss, since the NACK request would end up
// retransmitting the wrong packets.
RTC_CHECK(params_.ss[video_idx].selected_sl == -1 ||
params_.ss[video_idx].selected_sl ==
params_.ss[video_idx].num_spatial_layers - 1);
RTC_CHECK(params_.video[video_idx].selected_tl == -1 ||
params_.video[video_idx].selected_tl ==
params_.video[video_idx].num_temporal_layers - 1);
}
}
// TODO(ivica): Should max_bitrate_bps == -1 represent inf max bitrate, as
// it does in some parts of the code?
RTC_CHECK_GE(params_.video[video_idx].max_bitrate_bps,
params_.video[video_idx].target_bitrate_bps);
RTC_CHECK_GE(params_.video[video_idx].target_bitrate_bps,
params_.video[video_idx].min_bitrate_bps);
int selected_stream = params_.ss[video_idx].selected_stream;
if (params_.video[video_idx].selected_tl > -1) {
RTC_CHECK_LT(selected_stream, params_.ss[video_idx].streams.size())
<< "Can not use --selected_tl when --selected_stream is all streams";
int stream_tl = params_.ss[video_idx]
.streams[selected_stream]
.num_temporal_layers.value_or(1);
RTC_CHECK_LT(params_.video[video_idx].selected_tl, stream_tl);
}
RTC_CHECK_LE(params_.ss[video_idx].selected_stream,
params_.ss[video_idx].streams.size());
for (const VideoStream& stream : params_.ss[video_idx].streams) {
RTC_CHECK_GE(stream.min_bitrate_bps, 0);
RTC_CHECK_GE(stream.target_bitrate_bps, stream.min_bitrate_bps);
RTC_CHECK_GE(stream.max_bitrate_bps, stream.target_bitrate_bps);
}
// TODO(ivica): Should we check if the sum of all streams/layers is equal to
// the total bitrate? We anyway have to update them in the case bitrate
// estimator changes the total bitrates.
RTC_CHECK_GE(params_.ss[video_idx].num_spatial_layers, 1);
RTC_CHECK_LE(params_.ss[video_idx].selected_sl,
params_.ss[video_idx].num_spatial_layers);
RTC_CHECK(
params_.ss[video_idx].spatial_layers.empty() ||
params_.ss[video_idx].spatial_layers.size() ==
static_cast<size_t>(params_.ss[video_idx].num_spatial_layers));
if (params_.video[video_idx].codec == "VP8") {
RTC_CHECK_EQ(params_.ss[video_idx].num_spatial_layers, 1);
} else if (params_.video[video_idx].codec == "VP9") {
RTC_CHECK_EQ(params_.ss[video_idx].streams.size(), 1);
}
RTC_CHECK_GE(params_.call.num_thumbnails, 0);
if (params_.call.num_thumbnails > 0) {
RTC_CHECK_EQ(params_.ss[video_idx].num_spatial_layers, 1);
RTC_CHECK_EQ(params_.ss[video_idx].streams.size(), 3);
RTC_CHECK_EQ(params_.video[video_idx].num_temporal_layers, 3);
RTC_CHECK_EQ(params_.video[video_idx].codec, "VP8");
}
// Dual streams with FEC not supported in tests yet.
RTC_CHECK(!params_.video[video_idx].flexfec || num_video_streams_ == 1);
RTC_CHECK(!params_.video[video_idx].ulpfec || num_video_streams_ == 1);
}
}
// Static.
std::vector<int> VideoQualityTest::ParseCSV(const std::string& str) {
// Parse comma separated nonnegative integers, where some elements may be
// empty. The empty values are replaced with -1.
// E.g. "10,-20,,30,40" --> {10, 20, -1, 30,40}
// E.g. ",,10,,20," --> {-1, -1, 10, -1, 20, -1}
std::vector<int> result;
if (str.empty())
return result;
const char* p = str.c_str();
int value = -1;
int pos;
while (*p) {
if (*p == ',') {
result.push_back(value);
value = -1;
++p;
continue;
}
RTC_CHECK_EQ(sscanf(p, "%d%n", &value, &pos), 1)
<< "Unexpected non-number value.";
p += pos;
}
result.push_back(value);
return result;
}
// Static.
VideoStream VideoQualityTest::DefaultVideoStream(const Params& params,
size_t video_idx) {
VideoStream stream;
stream.width = params.video[video_idx].width;
stream.height = params.video[video_idx].height;
stream.max_framerate = params.video[video_idx].fps;
stream.min_bitrate_bps = params.video[video_idx].min_bitrate_bps;
stream.target_bitrate_bps = params.video[video_idx].target_bitrate_bps;
stream.max_bitrate_bps = params.video[video_idx].max_bitrate_bps;
stream.max_qp = kDefaultMaxQp;
stream.num_temporal_layers = params.video[video_idx].num_temporal_layers;
stream.active = true;
return stream;
}
// Static.
VideoStream VideoQualityTest::DefaultThumbnailStream() {
VideoStream stream;
stream.width = 320;
stream.height = 180;
stream.max_framerate = 7;
stream.min_bitrate_bps = 7500;
stream.target_bitrate_bps = 37500;
stream.max_bitrate_bps = 50000;
stream.max_qp = kDefaultMaxQp;
return stream;
}
// Static.
void VideoQualityTest::FillScalabilitySettings(
Params* params,
size_t video_idx,
const std::vector<std::string>& stream_descriptors,
int num_streams,
size_t selected_stream,
int num_spatial_layers,
int selected_sl,
InterLayerPredMode inter_layer_pred,
const std::vector<std::string>& sl_descriptors) {
if (params->ss[video_idx].streams.empty() &&
params->ss[video_idx].infer_streams) {
webrtc::VideoEncoderConfig encoder_config;
encoder_config.codec_type =
PayloadStringToCodecType(params->video[video_idx].codec);
encoder_config.content_type =
params->screenshare[video_idx].enabled
? webrtc::VideoEncoderConfig::ContentType::kScreen
: webrtc::VideoEncoderConfig::ContentType::kRealtimeVideo;
encoder_config.max_bitrate_bps = params->video[video_idx].max_bitrate_bps;
encoder_config.min_transmit_bitrate_bps =
params->video[video_idx].min_transmit_bps;
encoder_config.number_of_streams = num_streams;
encoder_config.spatial_layers = params->ss[video_idx].spatial_layers;
encoder_config.simulcast_layers = std::vector<VideoStream>(num_streams);
encoder_config.video_stream_factory =
new rtc::RefCountedObject<cricket::EncoderStreamFactory>(
params->video[video_idx].codec, kDefaultMaxQp,
params->screenshare[video_idx].enabled, true);
params->ss[video_idx].streams =
encoder_config.video_stream_factory->CreateEncoderStreams(
static_cast<int>(params->video[video_idx].width),
static_cast<int>(params->video[video_idx].height), encoder_config);
} else {
// Read VideoStream and SpatialLayer elements from a list of comma separated
// lists. To use a default value for an element, use -1 or leave empty.
// Validity checks performed in CheckParamsAndInjectionComponents.
RTC_CHECK(params->ss[video_idx].streams.empty());
for (const auto& descriptor : stream_descriptors) {
if (descriptor.empty())
continue;
VideoStream stream =
VideoQualityTest::DefaultVideoStream(*params, video_idx);
std::vector<int> v = VideoQualityTest::ParseCSV(descriptor);
if (v[0] != -1)
stream.width = static_cast<size_t>(v[0]);
if (v[1] != -1)
stream.height = static_cast<size_t>(v[1]);
if (v[2] != -1)
stream.max_framerate = v[2];
if (v[3] != -1)
stream.min_bitrate_bps = v[3];
if (v[4] != -1)
stream.target_bitrate_bps = v[4];
if (v[5] != -1)
stream.max_bitrate_bps = v[5];
if (v.size() > 6 && v[6] != -1)
stream.max_qp = v[6];
if (v.size() > 7 && v[7] != -1) {
stream.num_temporal_layers = v[7];
} else {
// Automatic TL thresholds for more than two layers not supported.
RTC_CHECK_LE(params->video[video_idx].num_temporal_layers, 2);
}
params->ss[video_idx].streams.push_back(stream);
}
}
params->ss[video_idx].num_spatial_layers = std::max(1, num_spatial_layers);
params->ss[video_idx].selected_stream = selected_stream;
params->ss[video_idx].selected_sl = selected_sl;
params->ss[video_idx].inter_layer_pred = inter_layer_pred;
RTC_CHECK(params->ss[video_idx].spatial_layers.empty());
for (const auto& descriptor : sl_descriptors) {
if (descriptor.empty())
continue;
std::vector<int> v = VideoQualityTest::ParseCSV(descriptor);
RTC_CHECK_EQ(v.size(), 8);
SpatialLayer layer = {0};
layer.width = v[0];
layer.height = v[1];
layer.maxFramerate = v[2];
layer.numberOfTemporalLayers = v[3];
layer.maxBitrate = v[4];
layer.minBitrate = v[5];
layer.targetBitrate = v[6];
layer.qpMax = v[7];
layer.active = true;
params->ss[video_idx].spatial_layers.push_back(layer);
}
}
void VideoQualityTest::SetupVideo(Transport* send_transport,
Transport* recv_transport) {
size_t total_streams_used = 0;
video_receive_configs_.clear();
video_send_configs_.clear();
video_encoder_configs_.clear();
bool decode_all_receive_streams = true;
size_t num_video_substreams = params_.ss[0].streams.size();
RTC_CHECK(num_video_streams_ > 0);
video_encoder_configs_.resize(num_video_streams_);
std::string generic_codec_name;
for (size_t video_idx = 0; video_idx < num_video_streams_; ++video_idx) {
video_send_configs_.push_back(VideoSendStream::Config(send_transport));
video_encoder_configs_.push_back(VideoEncoderConfig());
num_video_substreams = params_.ss[video_idx].streams.size();
RTC_CHECK_GT(num_video_substreams, 0);
for (size_t i = 0; i < num_video_substreams; ++i)
video_send_configs_[video_idx].rtp.ssrcs.push_back(
kVideoSendSsrcs[total_streams_used + i]);
int payload_type;
if (params_.video[video_idx].codec == "H264") {
payload_type = kPayloadTypeH264;
} else if (params_.video[video_idx].codec == "VP8") {
payload_type = kPayloadTypeVP8;
} else if (params_.video[video_idx].codec == "VP9") {
payload_type = kPayloadTypeVP9;
} else if (params_.video[video_idx].codec == "multiplex") {
payload_type = kPayloadTypeVP9;
} else if (params_.video[video_idx].codec == "FakeCodec") {
payload_type = kFakeVideoSendPayloadType;
} else {
RTC_CHECK(generic_codec_name.empty() ||
generic_codec_name == params_.video[video_idx].codec)
<< "Supplying multiple generic codecs is unsupported.";
RTC_LOG(LS_INFO) << "Treating codec " << params_.video[video_idx].codec
<< " as generic.";
payload_type = kPayloadTypeGeneric;
generic_codec_name = params_.video[video_idx].codec;
}
video_send_configs_[video_idx].encoder_settings.encoder_factory =
(video_idx == 0) ? &video_encoder_factory_with_analyzer_
: &video_encoder_factory_;
video_send_configs_[video_idx].encoder_settings.bitrate_allocator_factory =
video_bitrate_allocator_factory_.get();
video_send_configs_[video_idx].rtp.payload_name =
params_.video[video_idx].codec;
video_send_configs_[video_idx].rtp.payload_type = payload_type;
video_send_configs_[video_idx].rtp.nack.rtp_history_ms = kNackRtpHistoryMs;
video_send_configs_[video_idx].rtp.rtx.payload_type = kSendRtxPayloadType;
for (size_t i = 0; i < num_video_substreams; ++i) {
video_send_configs_[video_idx].rtp.rtx.ssrcs.push_back(
kSendRtxSsrcs[i + total_streams_used]);
}
video_send_configs_[video_idx].rtp.extensions.clear();
if (params_.call.send_side_bwe) {
video_send_configs_[video_idx].rtp.extensions.emplace_back(
RtpExtension::kTransportSequenceNumberUri,
kTransportSequenceNumberExtensionId);
} else {
video_send_configs_[video_idx].rtp.extensions.emplace_back(
RtpExtension::kAbsSendTimeUri, kAbsSendTimeExtensionId);
}
if (params_.call.generic_descriptor) {
// The generic descriptor is currently behind a field trial, so it needs
// to be set for this flag to have any effect.
// TODO(philipel): Remove this check when the experiment is removed.
RTC_CHECK(field_trial::IsEnabled("WebRTC-GenericDescriptor"));
video_send_configs_[video_idx].rtp.extensions.emplace_back(
RtpExtension::kGenericFrameDescriptorUri00,
kGenericFrameDescriptorExtensionId00);
video_send_configs_[video_idx].rtp.extensions.emplace_back(
RtpExtension::kGenericFrameDescriptorUri01,
kGenericFrameDescriptorExtensionId01);
}
video_send_configs_[video_idx].rtp.extensions.emplace_back(
RtpExtension::kVideoContentTypeUri, kVideoContentTypeExtensionId);
video_send_configs_[video_idx].rtp.extensions.emplace_back(
RtpExtension::kVideoTimingUri, kVideoTimingExtensionId);
video_encoder_configs_[video_idx].video_format.name =
params_.video[video_idx].codec;
video_encoder_configs_[video_idx].video_format.parameters =
params_.video[video_idx].sdp_params;
video_encoder_configs_[video_idx].codec_type =
PayloadStringToCodecType(params_.video[video_idx].codec);
video_encoder_configs_[video_idx].min_transmit_bitrate_bps =
params_.video[video_idx].min_transmit_bps;
video_send_configs_[video_idx].suspend_below_min_bitrate =
params_.video[video_idx].suspend_below_min_bitrate;
video_encoder_configs_[video_idx].number_of_streams =
params_.ss[video_idx].streams.size();
video_encoder_configs_[video_idx].max_bitrate_bps = 0;
for (size_t i = 0; i < params_.ss[video_idx].streams.size(); ++i) {
video_encoder_configs_[video_idx].max_bitrate_bps +=
params_.ss[video_idx].streams[i].max_bitrate_bps;
}
video_encoder_configs_[video_idx].simulcast_layers =
std::vector<VideoStream>(params_.ss[video_idx].streams.size());
if (!params_.ss[video_idx].infer_streams) {
video_encoder_configs_[video_idx].simulcast_layers =
params_.ss[video_idx].streams;
}
video_encoder_configs_[video_idx].video_stream_factory =
new rtc::RefCountedObject<cricket::EncoderStreamFactory>(
params_.video[video_idx].codec,
params_.ss[video_idx].streams[0].max_qp,
params_.screenshare[video_idx].enabled, true);
video_encoder_configs_[video_idx].spatial_layers =
params_.ss[video_idx].spatial_layers;
decode_all_receive_streams = params_.ss[video_idx].selected_stream ==
params_.ss[video_idx].streams.size();
absl::optional<int> decode_sub_stream;
if (!decode_all_receive_streams)
decode_sub_stream = params_.ss[video_idx].selected_stream;
CreateMatchingVideoReceiveConfigs(
video_send_configs_[video_idx], recv_transport,
params_.call.send_side_bwe, &video_decoder_factory_, decode_sub_stream,
true, kNackRtpHistoryMs);
if (params_.screenshare[video_idx].enabled) {
// Fill out codec settings.
video_encoder_configs_[video_idx].content_type =
VideoEncoderConfig::ContentType::kScreen;
degradation_preference_ = DegradationPreference::MAINTAIN_RESOLUTION;
if (params_.video[video_idx].codec == "VP8") {
VideoCodecVP8 vp8_settings = VideoEncoder::GetDefaultVp8Settings();
vp8_settings.denoisingOn = false;
vp8_settings.frameDroppingOn = false;
vp8_settings.numberOfTemporalLayers = static_cast<unsigned char>(
params_.video[video_idx].num_temporal_layers);
video_encoder_configs_[video_idx].encoder_specific_settings =
new rtc::RefCountedObject<
VideoEncoderConfig::Vp8EncoderSpecificSettings>(vp8_settings);
} else if (params_.video[video_idx].codec == "VP9") {
VideoCodecVP9 vp9_settings = VideoEncoder::GetDefaultVp9Settings();
vp9_settings.denoisingOn = false;
vp9_settings.frameDroppingOn = false;
vp9_settings.automaticResizeOn = false;
vp9_settings.numberOfTemporalLayers = static_cast<unsigned char>(
params_.video[video_idx].num_temporal_layers);
vp9_settings.numberOfSpatialLayers = static_cast<unsigned char>(
params_.ss[video_idx].num_spatial_layers);
vp9_settings.interLayerPred = params_.ss[video_idx].inter_layer_pred;
// High FPS vp9 screenshare requires flexible mode.
if (params_.ss[video_idx].num_spatial_layers > 1) {
vp9_settings.flexibleMode = true;
}
video_encoder_configs_[video_idx].encoder_specific_settings =
new rtc::RefCountedObject<
VideoEncoderConfig::Vp9EncoderSpecificSettings>(vp9_settings);
}
} else if (params_.ss[video_idx].num_spatial_layers > 1) {
// If SVC mode without screenshare, still need to set codec specifics.
RTC_CHECK(params_.video[video_idx].codec == "VP9");
VideoCodecVP9 vp9_settings = VideoEncoder::GetDefaultVp9Settings();
vp9_settings.numberOfTemporalLayers = static_cast<unsigned char>(
params_.video[video_idx].num_temporal_layers);
vp9_settings.numberOfSpatialLayers =
static_cast<unsigned char>(params_.ss[video_idx].num_spatial_layers);
vp9_settings.interLayerPred = params_.ss[video_idx].inter_layer_pred;
vp9_settings.automaticResizeOn = false;
video_encoder_configs_[video_idx].encoder_specific_settings =
new rtc::RefCountedObject<
VideoEncoderConfig::Vp9EncoderSpecificSettings>(vp9_settings);
} else if (params_.video[video_idx].automatic_scaling) {
if (params_.video[video_idx].codec == "VP8") {
VideoCodecVP8 vp8_settings = VideoEncoder::GetDefaultVp8Settings();
vp8_settings.automaticResizeOn = true;
video_encoder_configs_[video_idx].encoder_specific_settings =
new rtc::RefCountedObject<
VideoEncoderConfig::Vp8EncoderSpecificSettings>(vp8_settings);
} else if (params_.video[video_idx].codec == "VP9") {
VideoCodecVP9 vp9_settings = VideoEncoder::GetDefaultVp9Settings();
// Only enable quality scaler for single spatial layer.
vp9_settings.automaticResizeOn =
params_.ss[video_idx].num_spatial_layers == 1;
video_encoder_configs_[video_idx].encoder_specific_settings =
new rtc::RefCountedObject<
VideoEncoderConfig::Vp9EncoderSpecificSettings>(vp9_settings);
} else if (params_.video[video_idx].codec == "H264") {
// Quality scaling is always on for H.264.
} else {
RTC_NOTREACHED() << "Automatic scaling not supported for codec "
<< params_.video[video_idx].codec << ", stream "
<< video_idx;
}
} else {
// Default mode. Single SL, no automatic_scaling,
if (params_.video[video_idx].codec == "VP8") {
VideoCodecVP8 vp8_settings = VideoEncoder::GetDefaultVp8Settings();
vp8_settings.automaticResizeOn = false;
video_encoder_configs_[video_idx].encoder_specific_settings =
new rtc::RefCountedObject<
VideoEncoderConfig::Vp8EncoderSpecificSettings>(vp8_settings);
} else if (params_.video[video_idx].codec == "VP9") {
VideoCodecVP9 vp9_settings = VideoEncoder::GetDefaultVp9Settings();
vp9_settings.automaticResizeOn = false;
video_encoder_configs_[video_idx].encoder_specific_settings =
new rtc::RefCountedObject<
VideoEncoderConfig::Vp9EncoderSpecificSettings>(vp9_settings);
} else if (params_.video[video_idx].codec == "H264") {
VideoCodecH264 h264_settings = VideoEncoder::GetDefaultH264Settings();
video_encoder_configs_[video_idx].encoder_specific_settings =
new rtc::RefCountedObject<
VideoEncoderConfig::H264EncoderSpecificSettings>(h264_settings);
}
}
total_streams_used += num_video_substreams;
}
// FEC supported only for single video stream mode yet.
if (params_.video[0].flexfec) {
if (decode_all_receive_streams) {
SetSendFecConfig(GetVideoSendConfig()->rtp.ssrcs);
} else {
SetSendFecConfig({kVideoSendSsrcs[params_.ss[0].selected_stream]});
}
CreateMatchingFecConfig(recv_transport, *GetVideoSendConfig());
GetFlexFecConfig()->transport_cc = params_.call.send_side_bwe;
if (params_.call.send_side_bwe) {
GetFlexFecConfig()->rtp_header_extensions.push_back(
RtpExtension(RtpExtension::kTransportSequenceNumberUri,
kTransportSequenceNumberExtensionId));
} else {
GetFlexFecConfig()->rtp_header_extensions.push_back(
RtpExtension(RtpExtension::kAbsSendTimeUri, kAbsSendTimeExtensionId));
}
}
if (params_.video[0].ulpfec) {
SetSendUlpFecConfig(GetVideoSendConfig());
if (decode_all_receive_streams) {
for (auto& receive_config : video_receive_configs_) {
SetReceiveUlpFecConfig(&receive_config);
}
} else {
SetReceiveUlpFecConfig(
&video_receive_configs_[params_.ss[0].selected_stream]);
}
}
}
void VideoQualityTest::SetupThumbnails(Transport* send_transport,
Transport* recv_transport) {
for (int i = 0; i < params_.call.num_thumbnails; ++i) {
// Thumbnails will be send in the other way: from receiver_call to
// sender_call.
VideoSendStream::Config thumbnail_send_config(recv_transport);
thumbnail_send_config.rtp.ssrcs.push_back(kThumbnailSendSsrcStart + i);
// TODO(nisse): Could use a simpler VP8-only encoder factory.
thumbnail_send_config.encoder_settings.encoder_factory =
&video_encoder_factory_;
thumbnail_send_config.encoder_settings.bitrate_allocator_factory =
video_bitrate_allocator_factory_.get();
thumbnail_send_config.rtp.payload_name = params_.video[0].codec;
thumbnail_send_config.rtp.payload_type = kPayloadTypeVP8;
thumbnail_send_config.rtp.nack.rtp_history_ms = kNackRtpHistoryMs;
thumbnail_send_config.rtp.rtx.payload_type = kSendRtxPayloadType;
thumbnail_send_config.rtp.rtx.ssrcs.push_back(kThumbnailRtxSsrcStart + i);
thumbnail_send_config.rtp.extensions.clear();
if (params_.call.send_side_bwe) {
thumbnail_send_config.rtp.extensions.push_back(
RtpExtension(RtpExtension::kTransportSequenceNumberUri,
kTransportSequenceNumberExtensionId));