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webrtc/modules/video_coding/codecs/vp9/test/vp9_impl_unittest.cc
Artem Titov dcd7fc7ea8 Use backticks not vertical bars to denote variables in comments for /modules/video_coding 
Bug: webrtc:12338
Change-Id: Ia8a9adea291d594e4f59a6a1203a7bfb0758adac
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/227165
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34684}
2021-08-09 15:26:22 +00:00

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/*
* Copyright (c) 2017 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 "absl/memory/memory.h"
#include "api/test/create_frame_generator.h"
#include "api/test/frame_generator_interface.h"
#include "api/test/mock_video_encoder.h"
#include "api/video/color_space.h"
#include "api/video/i420_buffer.h"
#include "api/video_codecs/video_encoder.h"
#include "api/video_codecs/vp9_profile.h"
#include "common_video/libyuv/include/webrtc_libyuv.h"
#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
#include "modules/video_coding/codecs/interface/libvpx_interface.h"
#include "modules/video_coding/codecs/interface/mock_libvpx_interface.h"
#include "modules/video_coding/codecs/test/encoded_video_frame_producer.h"
#include "modules/video_coding/codecs/test/video_codec_unittest.h"
#include "modules/video_coding/codecs/vp9/include/vp9.h"
#include "modules/video_coding/codecs/vp9/libvpx_vp9_encoder.h"
#include "modules/video_coding/codecs/vp9/svc_config.h"
#include "rtc_base/strings/string_builder.h"
#include "test/explicit_key_value_config.h"
#include "test/field_trial.h"
#include "test/gmock.h"
#include "test/gtest.h"
#include "test/mappable_native_buffer.h"
#include "test/video_codec_settings.h"
namespace webrtc {
namespace {
using ::testing::_;
using ::testing::A;
using ::testing::AllOf;
using ::testing::An;
using ::testing::AnyNumber;
using ::testing::ByRef;
using ::testing::DoAll;
using ::testing::Each;
using ::testing::ElementsAre;
using ::testing::ElementsAreArray;
using ::testing::Field;
using ::testing::IsEmpty;
using ::testing::Mock;
using ::testing::NiceMock;
using ::testing::Return;
using ::testing::SafeMatcherCast;
using ::testing::SaveArgPointee;
using ::testing::SetArgPointee;
using ::testing::SizeIs;
using ::testing::TypedEq;
using ::testing::UnorderedElementsAreArray;
using ::testing::WithArg;
using EncoderInfo = webrtc::VideoEncoder::EncoderInfo;
using FramerateFractions =
absl::InlinedVector<uint8_t, webrtc::kMaxTemporalStreams>;
constexpr size_t kWidth = 1280;
constexpr size_t kHeight = 720;
const VideoEncoder::Capabilities kCapabilities(false);
const VideoEncoder::Settings kSettings(kCapabilities,
/*number_of_cores=*/1,
/*max_payload_size=*/0);
VideoCodec DefaultCodecSettings() {
VideoCodec codec_settings;
webrtc::test::CodecSettings(kVideoCodecVP9, &codec_settings);
codec_settings.width = kWidth;
codec_settings.height = kHeight;
codec_settings.VP9()->numberOfTemporalLayers = 1;
codec_settings.VP9()->numberOfSpatialLayers = 1;
return codec_settings;
}
void ConfigureSvc(VideoCodec& codec_settings,
int num_spatial_layers,
int num_temporal_layers = 1) {
codec_settings.VP9()->numberOfSpatialLayers = num_spatial_layers;
codec_settings.VP9()->numberOfTemporalLayers = num_temporal_layers;
codec_settings.VP9()->frameDroppingOn = false;
std::vector<SpatialLayer> layers = GetSvcConfig(
codec_settings.width, codec_settings.height, codec_settings.maxFramerate,
/*first_active_layer=*/0, num_spatial_layers, num_temporal_layers, false);
for (size_t i = 0; i < layers.size(); ++i) {
codec_settings.spatialLayers[i] = layers[i];
}
}
} // namespace
class TestVp9Impl : public VideoCodecUnitTest {
protected:
std::unique_ptr<VideoEncoder> CreateEncoder() override {
return VP9Encoder::Create();
}
std::unique_ptr<VideoDecoder> CreateDecoder() override {
return VP9Decoder::Create();
}
void ModifyCodecSettings(VideoCodec* codec_settings) override {
webrtc::test::CodecSettings(kVideoCodecVP9, codec_settings);
codec_settings->width = kWidth;
codec_settings->height = kHeight;
codec_settings->VP9()->numberOfTemporalLayers = 1;
codec_settings->VP9()->numberOfSpatialLayers = 1;
}
};
class TestVp9ImplForPixelFormat
: public TestVp9Impl,
public ::testing::WithParamInterface<
test::FrameGeneratorInterface::OutputType> {
protected:
void SetUp() override {
input_frame_generator_ = test::CreateSquareFrameGenerator(
kWidth, kHeight, GetParam(), absl::optional<int>());
TestVp9Impl::SetUp();
}
};
// Disabled on ios as flake, see https://crbug.com/webrtc/7057
#if defined(WEBRTC_IOS)
TEST_P(TestVp9ImplForPixelFormat, DISABLED_EncodeDecode) {
#else
TEST_P(TestVp9ImplForPixelFormat, EncodeDecode) {
#endif
VideoFrame input_frame = NextInputFrame();
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(input_frame, nullptr));
EncodedImage encoded_frame;
CodecSpecificInfo codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrame(&encoded_frame, &codec_specific_info));
// First frame should be a key frame.
encoded_frame._frameType = VideoFrameType::kVideoFrameKey;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, decoder_->Decode(encoded_frame, false, 0));
std::unique_ptr<VideoFrame> decoded_frame;
absl::optional<uint8_t> decoded_qp;
ASSERT_TRUE(WaitForDecodedFrame(&decoded_frame, &decoded_qp));
ASSERT_TRUE(decoded_frame);
EXPECT_GT(I420PSNR(&input_frame, decoded_frame.get()), 36);
const ColorSpace color_space = *decoded_frame->color_space();
EXPECT_EQ(ColorSpace::PrimaryID::kUnspecified, color_space.primaries());
EXPECT_EQ(ColorSpace::TransferID::kUnspecified, color_space.transfer());
EXPECT_EQ(ColorSpace::MatrixID::kUnspecified, color_space.matrix());
EXPECT_EQ(ColorSpace::RangeID::kLimited, color_space.range());
EXPECT_EQ(ColorSpace::ChromaSiting::kUnspecified,
color_space.chroma_siting_horizontal());
EXPECT_EQ(ColorSpace::ChromaSiting::kUnspecified,
color_space.chroma_siting_vertical());
}
TEST_P(TestVp9ImplForPixelFormat, EncodeNativeBuffer) {
VideoFrame input_frame = NextInputFrame();
// Replace the input frame with a fake native buffer of the same size and
// underlying pixel format. Do not allow ToI420() for non-I420 buffers,
// ensuring zero-conversion.
input_frame = test::CreateMappableNativeFrame(
input_frame.ntp_time_ms(), input_frame.video_frame_buffer()->type(),
input_frame.width(), input_frame.height());
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(input_frame, nullptr));
EncodedImage encoded_frame;
CodecSpecificInfo codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrame(&encoded_frame, &codec_specific_info));
// After encoding, we would expect a single mapping to have happened.
rtc::scoped_refptr<test::MappableNativeBuffer> mappable_buffer =
test::GetMappableNativeBufferFromVideoFrame(input_frame);
std::vector<rtc::scoped_refptr<VideoFrameBuffer>> mapped_buffers =
mappable_buffer->GetMappedFramedBuffers();
ASSERT_EQ(mapped_buffers.size(), 1u);
EXPECT_EQ(mapped_buffers[0]->type(), mappable_buffer->mappable_type());
EXPECT_EQ(mapped_buffers[0]->width(), input_frame.width());
EXPECT_EQ(mapped_buffers[0]->height(), input_frame.height());
EXPECT_FALSE(mappable_buffer->DidConvertToI420());
}
TEST_P(TestVp9ImplForPixelFormat, DecodedColorSpaceFromBitstream) {
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
EncodedImage encoded_frame;
CodecSpecificInfo codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrame(&encoded_frame, &codec_specific_info));
// Encoded frame without explicit color space information.
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, decoder_->Decode(encoded_frame, false, 0));
std::unique_ptr<VideoFrame> decoded_frame;
absl::optional<uint8_t> decoded_qp;
ASSERT_TRUE(WaitForDecodedFrame(&decoded_frame, &decoded_qp));
ASSERT_TRUE(decoded_frame);
// Color space present from encoded bitstream.
ASSERT_TRUE(decoded_frame->color_space());
// No HDR metadata present.
EXPECT_FALSE(decoded_frame->color_space()->hdr_metadata());
}
TEST_P(TestVp9ImplForPixelFormat, DecodedQpEqualsEncodedQp) {
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
EncodedImage encoded_frame;
CodecSpecificInfo codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrame(&encoded_frame, &codec_specific_info));
// First frame should be a key frame.
encoded_frame._frameType = VideoFrameType::kVideoFrameKey;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, decoder_->Decode(encoded_frame, false, 0));
std::unique_ptr<VideoFrame> decoded_frame;
absl::optional<uint8_t> decoded_qp;
ASSERT_TRUE(WaitForDecodedFrame(&decoded_frame, &decoded_qp));
ASSERT_TRUE(decoded_frame);
ASSERT_TRUE(decoded_qp);
EXPECT_EQ(encoded_frame.qp_, *decoded_qp);
}
TEST_F(TestVp9Impl, SwitchInputPixelFormatsWithoutReconfigure) {
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
EncodedImage encoded_frame;
CodecSpecificInfo codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrame(&encoded_frame, &codec_specific_info));
// Change the input frame type from I420 to NV12, encoding should still work.
input_frame_generator_ = test::CreateSquareFrameGenerator(
kWidth, kHeight, test::FrameGeneratorInterface::OutputType::kNV12,
absl::optional<int>());
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrame(&encoded_frame, &codec_specific_info));
// Flipping back to I420, encoding should still work.
input_frame_generator_ = test::CreateSquareFrameGenerator(
kWidth, kHeight, test::FrameGeneratorInterface::OutputType::kI420,
absl::optional<int>());
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrame(&encoded_frame, &codec_specific_info));
}
TEST(Vp9ImplTest, ParserQpEqualsEncodedQp) {
std::unique_ptr<VideoEncoder> encoder = VP9Encoder::Create();
VideoCodec codec_settings = DefaultCodecSettings();
encoder->InitEncode(&codec_settings, kSettings);
std::vector<EncodedVideoFrameProducer::EncodedFrame> frames =
EncodedVideoFrameProducer(*encoder)
.SetNumInputFrames(1)
.SetResolution({kWidth, kHeight})
.Encode();
ASSERT_THAT(frames, SizeIs(1));
const auto& encoded_frame = frames.front().encoded_image;
int qp = 0;
ASSERT_TRUE(vp9::GetQp(encoded_frame.data(), encoded_frame.size(), &qp));
EXPECT_EQ(encoded_frame.qp_, qp);
}
TEST(Vp9ImplTest, EncodeAttachesTemplateStructureWithSvcController) {
test::ScopedFieldTrials override_field_trials(
"WebRTC-Vp9DependencyDescriptor/Enabled/");
std::unique_ptr<VideoEncoder> encoder = VP9Encoder::Create();
VideoCodec codec_settings = DefaultCodecSettings();
EXPECT_EQ(encoder->InitEncode(&codec_settings, kSettings),
WEBRTC_VIDEO_CODEC_OK);
std::vector<EncodedVideoFrameProducer::EncodedFrame> frames =
EncodedVideoFrameProducer(*encoder)
.SetNumInputFrames(2)
.SetResolution({kWidth, kHeight})
.Encode();
ASSERT_THAT(frames, SizeIs(2));
EXPECT_TRUE(frames[0].codec_specific_info.template_structure);
EXPECT_TRUE(frames[0].codec_specific_info.generic_frame_info);
EXPECT_FALSE(frames[1].codec_specific_info.template_structure);
EXPECT_TRUE(frames[1].codec_specific_info.generic_frame_info);
}
TEST(Vp9ImplTest, EncoderWith2TemporalLayers) {
std::unique_ptr<VideoEncoder> encoder = VP9Encoder::Create();
VideoCodec codec_settings = DefaultCodecSettings();
codec_settings.VP9()->numberOfTemporalLayers = 2;
// Tl0PidIdx is only used in non-flexible mode.
codec_settings.VP9()->flexibleMode = false;
EXPECT_EQ(encoder->InitEncode(&codec_settings, kSettings),
WEBRTC_VIDEO_CODEC_OK);
std::vector<EncodedVideoFrameProducer::EncodedFrame> frames =
EncodedVideoFrameProducer(*encoder)
.SetNumInputFrames(4)
.SetResolution({kWidth, kHeight})
.Encode();
ASSERT_THAT(frames, SizeIs(4));
EXPECT_EQ(frames[0].codec_specific_info.codecSpecific.VP9.temporal_idx, 0);
EXPECT_EQ(frames[1].codec_specific_info.codecSpecific.VP9.temporal_idx, 1);
EXPECT_EQ(frames[2].codec_specific_info.codecSpecific.VP9.temporal_idx, 0);
EXPECT_EQ(frames[3].codec_specific_info.codecSpecific.VP9.temporal_idx, 1);
}
TEST(Vp9ImplTest, EncodeTemporalLayersWithSvcController) {
test::ScopedFieldTrials override_field_trials(
"WebRTC-Vp9DependencyDescriptor/Enabled/");
std::unique_ptr<VideoEncoder> encoder = VP9Encoder::Create();
VideoCodec codec_settings = DefaultCodecSettings();
codec_settings.VP9()->numberOfTemporalLayers = 2;
EXPECT_EQ(encoder->InitEncode(&codec_settings, kSettings),
WEBRTC_VIDEO_CODEC_OK);
std::vector<EncodedVideoFrameProducer::EncodedFrame> frames =
EncodedVideoFrameProducer(*encoder)
.SetNumInputFrames(4)
.SetResolution({kWidth, kHeight})
.Encode();
ASSERT_THAT(frames, SizeIs(4));
EXPECT_EQ(frames[0].codec_specific_info.codecSpecific.VP9.temporal_idx, 0);
EXPECT_EQ(frames[1].codec_specific_info.codecSpecific.VP9.temporal_idx, 1);
EXPECT_EQ(frames[2].codec_specific_info.codecSpecific.VP9.temporal_idx, 0);
EXPECT_EQ(frames[3].codec_specific_info.codecSpecific.VP9.temporal_idx, 1);
// Verify codec agnostic part
ASSERT_TRUE(frames[0].codec_specific_info.generic_frame_info);
ASSERT_TRUE(frames[1].codec_specific_info.generic_frame_info);
ASSERT_TRUE(frames[2].codec_specific_info.generic_frame_info);
ASSERT_TRUE(frames[3].codec_specific_info.generic_frame_info);
EXPECT_EQ(frames[0].codec_specific_info.generic_frame_info->temporal_id, 0);
EXPECT_EQ(frames[1].codec_specific_info.generic_frame_info->temporal_id, 1);
EXPECT_EQ(frames[2].codec_specific_info.generic_frame_info->temporal_id, 0);
EXPECT_EQ(frames[3].codec_specific_info.generic_frame_info->temporal_id, 1);
}
TEST(Vp9ImplTest, EncoderWith2SpatialLayers) {
std::unique_ptr<VideoEncoder> encoder = VP9Encoder::Create();
VideoCodec codec_settings = DefaultCodecSettings();
codec_settings.VP9()->numberOfSpatialLayers = 2;
EXPECT_EQ(encoder->InitEncode(&codec_settings, kSettings),
WEBRTC_VIDEO_CODEC_OK);
std::vector<EncodedVideoFrameProducer::EncodedFrame> frames =
EncodedVideoFrameProducer(*encoder)
.SetNumInputFrames(1)
.SetResolution({kWidth, kHeight})
.Encode();
ASSERT_THAT(frames, SizeIs(2));
EXPECT_EQ(frames[0].encoded_image.SpatialIndex(), 0);
EXPECT_EQ(frames[1].encoded_image.SpatialIndex(), 1);
}
TEST(Vp9ImplTest, EncodeSpatialLayersWithSvcController) {
test::ScopedFieldTrials override_field_trials(
"WebRTC-Vp9DependencyDescriptor/Enabled/");
std::unique_ptr<VideoEncoder> encoder = VP9Encoder::Create();
VideoCodec codec_settings = DefaultCodecSettings();
codec_settings.VP9()->numberOfSpatialLayers = 2;
EXPECT_EQ(encoder->InitEncode(&codec_settings, kSettings),
WEBRTC_VIDEO_CODEC_OK);
std::vector<EncodedVideoFrameProducer::EncodedFrame> frames =
EncodedVideoFrameProducer(*encoder)
.SetNumInputFrames(2)
.SetResolution({kWidth, kHeight})
.Encode();
ASSERT_THAT(frames, SizeIs(4));
EXPECT_EQ(frames[0].encoded_image.SpatialIndex(), 0);
EXPECT_EQ(frames[1].encoded_image.SpatialIndex(), 1);
EXPECT_EQ(frames[2].encoded_image.SpatialIndex(), 0);
EXPECT_EQ(frames[3].encoded_image.SpatialIndex(), 1);
// Verify codec agnostic part
ASSERT_TRUE(frames[0].codec_specific_info.generic_frame_info);
ASSERT_TRUE(frames[1].codec_specific_info.generic_frame_info);
ASSERT_TRUE(frames[2].codec_specific_info.generic_frame_info);
ASSERT_TRUE(frames[3].codec_specific_info.generic_frame_info);
EXPECT_EQ(frames[0].codec_specific_info.generic_frame_info->spatial_id, 0);
EXPECT_EQ(frames[1].codec_specific_info.generic_frame_info->spatial_id, 1);
EXPECT_EQ(frames[2].codec_specific_info.generic_frame_info->spatial_id, 0);
EXPECT_EQ(frames[3].codec_specific_info.generic_frame_info->spatial_id, 1);
}
TEST_F(TestVp9Impl, EncoderExplicitLayering) {
// Override default settings.
codec_settings_.VP9()->numberOfTemporalLayers = 1;
codec_settings_.VP9()->numberOfSpatialLayers = 2;
codec_settings_.width = 960;
codec_settings_.height = 540;
codec_settings_.spatialLayers[0].minBitrate = 200;
codec_settings_.spatialLayers[0].maxBitrate = 500;
codec_settings_.spatialLayers[0].targetBitrate =
(codec_settings_.spatialLayers[0].minBitrate +
codec_settings_.spatialLayers[0].maxBitrate) /
2;
codec_settings_.spatialLayers[0].active = true;
codec_settings_.spatialLayers[1].minBitrate = 400;
codec_settings_.spatialLayers[1].maxBitrate = 1500;
codec_settings_.spatialLayers[1].targetBitrate =
(codec_settings_.spatialLayers[1].minBitrate +
codec_settings_.spatialLayers[1].maxBitrate) /
2;
codec_settings_.spatialLayers[1].active = true;
codec_settings_.spatialLayers[0].width = codec_settings_.width / 2;
codec_settings_.spatialLayers[0].height = codec_settings_.height / 2;
codec_settings_.spatialLayers[0].maxFramerate = codec_settings_.maxFramerate;
codec_settings_.spatialLayers[1].width = codec_settings_.width;
codec_settings_.spatialLayers[1].height = codec_settings_.height;
codec_settings_.spatialLayers[1].maxFramerate = codec_settings_.maxFramerate;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
// Ensure it fails if scaling factors in horz/vert dimentions are different.
codec_settings_.spatialLayers[0].width = codec_settings_.width;
codec_settings_.spatialLayers[0].height = codec_settings_.height / 2;
codec_settings_.spatialLayers[1].width = codec_settings_.width;
codec_settings_.spatialLayers[1].height = codec_settings_.height;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_ERR_PARAMETER,
encoder_->InitEncode(&codec_settings_, kSettings));
// Ensure it fails if scaling factor is not power of two.
codec_settings_.spatialLayers[0].width = codec_settings_.width / 3;
codec_settings_.spatialLayers[0].height = codec_settings_.height / 3;
codec_settings_.spatialLayers[1].width = codec_settings_.width;
codec_settings_.spatialLayers[1].height = codec_settings_.height;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_ERR_PARAMETER,
encoder_->InitEncode(&codec_settings_, kSettings));
}
TEST_F(TestVp9Impl, EnableDisableSpatialLayers) {
// Configure encoder to produce N spatial layers. Encode frames of layer 0
// then enable layer 1 and encode more frames and so on until layer N-1.
// Then disable layers one by one in the same way.
// Note: bit rate allocation is high to avoid frame dropping due to rate
// control, the encoder should always produce a frame. A dropped
// frame indicates a problem and the test will fail.
const size_t num_spatial_layers = 3;
const size_t num_frames_to_encode = 5;
ConfigureSvc(codec_settings_, num_spatial_layers);
codec_settings_.VP9()->frameDroppingOn = true;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
VideoBitrateAllocation bitrate_allocation;
for (size_t sl_idx = 0; sl_idx < num_spatial_layers; ++sl_idx) {
// Allocate high bit rate to avoid frame dropping due to rate control.
bitrate_allocation.SetBitrate(
sl_idx, 0,
codec_settings_.spatialLayers[sl_idx].targetBitrate * 1000 * 2);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
for (size_t frame_num = 0; frame_num < num_frames_to_encode; ++frame_num) {
SetWaitForEncodedFramesThreshold(sl_idx + 1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.ss_data_available,
frame_num == 0);
}
}
for (size_t i = 0; i < num_spatial_layers - 1; ++i) {
const size_t sl_idx = num_spatial_layers - i - 1;
bitrate_allocation.SetBitrate(sl_idx, 0, 0);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
for (size_t frame_num = 0; frame_num < num_frames_to_encode; ++frame_num) {
SetWaitForEncodedFramesThreshold(sl_idx);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.ss_data_available,
frame_num == 0);
}
}
}
TEST(Vp9ImplTest, EnableDisableSpatialLayersWithSvcController) {
test::ScopedFieldTrials override_field_trials(
"WebRTC-Vp9DependencyDescriptor/Enabled/");
const int num_spatial_layers = 3;
// Configure encoder to produce 3 spatial layers. Encode frames of layer 0
// then enable layer 1 and encode more frames and so on.
// Then disable layers one by one in the same way.
// Note: bit rate allocation is high to avoid frame dropping due to rate
// control, the encoder should always produce a frame. A dropped
// frame indicates a problem and the test will fail.
std::unique_ptr<VideoEncoder> encoder = VP9Encoder::Create();
VideoCodec codec_settings = DefaultCodecSettings();
ConfigureSvc(codec_settings, num_spatial_layers);
codec_settings.VP9()->frameDroppingOn = true;
EXPECT_EQ(encoder->InitEncode(&codec_settings, kSettings),
WEBRTC_VIDEO_CODEC_OK);
EncodedVideoFrameProducer producer(*encoder);
producer.SetResolution({kWidth, kHeight});
// Encode a key frame to validate all other frames are delta frames.
std::vector<EncodedVideoFrameProducer::EncodedFrame> frames =
producer.SetNumInputFrames(1).Encode();
ASSERT_THAT(frames, Not(IsEmpty()));
EXPECT_TRUE(frames[0].codec_specific_info.template_structure);
const size_t num_frames_to_encode = 5;
VideoBitrateAllocation bitrate_allocation;
for (size_t sl_idx = 0; sl_idx < num_spatial_layers; ++sl_idx) {
// Allocate high bit rate to avoid frame dropping due to rate control.
bitrate_allocation.SetBitrate(
sl_idx, 0,
codec_settings.spatialLayers[sl_idx].targetBitrate * 1000 * 2);
encoder->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings.maxFramerate));
frames = producer.SetNumInputFrames(num_frames_to_encode).Encode();
// With (sl_idx+1) spatial layers expect (sl_idx+1) frames per input frame.
ASSERT_THAT(frames, SizeIs(num_frames_to_encode * (sl_idx + 1)));
for (size_t i = 0; i < frames.size(); ++i) {
EXPECT_TRUE(frames[i].codec_specific_info.generic_frame_info);
EXPECT_FALSE(frames[i].codec_specific_info.template_structure);
}
}
for (int sl_idx = num_spatial_layers - 1; sl_idx > 0; --sl_idx) {
bitrate_allocation.SetBitrate(sl_idx, 0, 0);
encoder->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings.maxFramerate));
frames = producer.SetNumInputFrames(num_frames_to_encode).Encode();
// With `sl_idx` spatial layer disabled, there are `sl_idx` spatial layers
// left.
ASSERT_THAT(frames, SizeIs(num_frames_to_encode * sl_idx));
for (size_t i = 0; i < frames.size(); ++i) {
EXPECT_TRUE(frames[i].codec_specific_info.generic_frame_info);
EXPECT_FALSE(frames[i].codec_specific_info.template_structure);
}
}
}
MATCHER_P2(GenericLayerIs, spatial_id, temporal_id, "") {
if (arg.codec_specific_info.generic_frame_info == absl::nullopt) {
*result_listener << " miss generic_frame_info";
return false;
}
const auto& layer = *arg.codec_specific_info.generic_frame_info;
if (layer.spatial_id != spatial_id || layer.temporal_id != temporal_id) {
*result_listener << " frame from layer (" << layer.spatial_id << ", "
<< layer.temporal_id << ")";
return false;
}
return true;
}
TEST(Vp9ImplTest, SpatialUpswitchNotAtGOFBoundary) {
test::ScopedFieldTrials override_field_trials(
"WebRTC-Vp9DependencyDescriptor/Enabled/");
std::unique_ptr<VideoEncoder> encoder = VP9Encoder::Create();
VideoCodec codec_settings = DefaultCodecSettings();
ConfigureSvc(codec_settings, /*num_spatial_layers=*/3,
/*num_temporal_layers=*/3);
codec_settings.VP9()->frameDroppingOn = true;
EXPECT_EQ(encoder->InitEncode(&codec_settings, kSettings),
WEBRTC_VIDEO_CODEC_OK);
EncodedVideoFrameProducer producer(*encoder);
producer.SetResolution({kWidth, kHeight});
// Disable all but spatial_layer = 0;
VideoBitrateAllocation bitrate_allocation;
int layer_bitrate_bps = codec_settings.spatialLayers[0].targetBitrate * 1000;
bitrate_allocation.SetBitrate(0, 0, layer_bitrate_bps);
bitrate_allocation.SetBitrate(0, 1, layer_bitrate_bps);
bitrate_allocation.SetBitrate(0, 2, layer_bitrate_bps);
encoder->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings.maxFramerate));
EXPECT_THAT(producer.SetNumInputFrames(3).Encode(),
ElementsAre(GenericLayerIs(0, 0), GenericLayerIs(0, 2),
GenericLayerIs(0, 1)));
// Upswitch to spatial_layer = 1
layer_bitrate_bps = codec_settings.spatialLayers[1].targetBitrate * 1000;
bitrate_allocation.SetBitrate(1, 0, layer_bitrate_bps);
bitrate_allocation.SetBitrate(1, 1, layer_bitrate_bps);
bitrate_allocation.SetBitrate(1, 2, layer_bitrate_bps);
encoder->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings.maxFramerate));
// Expect upswitch doesn't happen immediately since there is no S1 frame that
// S1T2 frame can reference.
EXPECT_THAT(producer.SetNumInputFrames(1).Encode(),
ElementsAre(GenericLayerIs(0, 2)));
// Expect spatial upswitch happens now, at T0 frame.
EXPECT_THAT(producer.SetNumInputFrames(1).Encode(),
ElementsAre(GenericLayerIs(0, 0), GenericLayerIs(1, 0)));
}
TEST_F(TestVp9Impl, DisableEnableBaseLayerTriggersKeyFrame) {
// Configure encoder to produce N spatial layers. Encode frames for all
// layers. Then disable all but the last layer. Then reenable all back again.
test::ScopedFieldTrials override_field_trials(
"WebRTC-Vp9ExternalRefCtrl/Enabled/");
const size_t num_spatial_layers = 3;
const size_t num_temporal_layers = 3;
// Must not be multiple of temporal period to exercise all code paths.
const size_t num_frames_to_encode = 5;
ConfigureSvc(codec_settings_, num_spatial_layers, num_temporal_layers);
codec_settings_.VP9()->frameDroppingOn = false;
codec_settings_.VP9()->flexibleMode = false;
codec_settings_.VP9()->interLayerPred = InterLayerPredMode::kOnKeyPic;
codec_settings_.mode = VideoCodecMode::kRealtimeVideo;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
VideoBitrateAllocation bitrate_allocation;
for (size_t sl_idx = 0; sl_idx < num_spatial_layers; ++sl_idx) {
for (size_t tl_idx = 0; tl_idx < num_temporal_layers; ++tl_idx) {
// Allocate high bit rate to avoid frame dropping due to rate control.
bitrate_allocation.SetBitrate(
sl_idx, tl_idx,
codec_settings_.spatialLayers[sl_idx].targetBitrate * 1000 * 2);
}
}
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
for (size_t frame_num = 0; frame_num < num_frames_to_encode; ++frame_num) {
SetWaitForEncodedFramesThreshold(num_spatial_layers);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.ss_data_available,
frame_num == 0);
}
// Disable all but top layer.
for (size_t sl_idx = 0; sl_idx < num_spatial_layers - 1; ++sl_idx) {
for (size_t tl_idx = 0; tl_idx < num_temporal_layers; ++tl_idx) {
bitrate_allocation.SetBitrate(sl_idx, tl_idx, 0);
}
}
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
bool seen_ss_data = false;
for (size_t frame_num = 0; frame_num < num_frames_to_encode; ++frame_num) {
SetWaitForEncodedFramesThreshold(1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
// SS available immediatly after switching on base temporal layer.
if (seen_ss_data) {
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.ss_data_available,
false);
} else {
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.ss_data_available,
codec_specific_info[0].codecSpecific.VP9.temporal_idx == 0);
seen_ss_data |=
codec_specific_info[0].codecSpecific.VP9.ss_data_available;
}
// No key-frames generated for disabling layers.
EXPECT_EQ(encoded_frame[0]._frameType, VideoFrameType::kVideoFrameDelta);
EXPECT_EQ(encoded_frame[0].SpatialIndex().value_or(-1), 2);
}
EXPECT_TRUE(seen_ss_data);
// Force key-frame.
std::vector<VideoFrameType> frame_types = {VideoFrameType::kVideoFrameKey};
SetWaitForEncodedFramesThreshold(1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), &frame_types));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
// Key-frame should be produced.
EXPECT_EQ(encoded_frame[0]._frameType, VideoFrameType::kVideoFrameKey);
EXPECT_EQ(encoded_frame[0].SpatialIndex().value_or(-1), 2);
// Encode some more frames.
for (size_t frame_num = 0; frame_num < num_frames_to_encode; ++frame_num) {
SetWaitForEncodedFramesThreshold(1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
EXPECT_EQ(encoded_frame[0]._frameType, VideoFrameType::kVideoFrameDelta);
EXPECT_EQ(encoded_frame[0].SpatialIndex().value_or(-1), 2);
}
// Enable the second layer back.
// Allocate high bit rate to avoid frame dropping due to rate control.
for (size_t tl_idx = 0; tl_idx < num_temporal_layers; ++tl_idx) {
bitrate_allocation.SetBitrate(
1, tl_idx, codec_settings_.spatialLayers[0].targetBitrate * 1000 * 2);
}
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
for (size_t frame_num = 0; frame_num < num_frames_to_encode; ++frame_num) {
SetWaitForEncodedFramesThreshold(2);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
ASSERT_EQ(encoded_frame.size(), 2u);
// SS available immediatly after switching on.
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.ss_data_available,
frame_num == 0);
// Keyframe should be generated when enabling lower layers.
const VideoFrameType expected_type = frame_num == 0
? VideoFrameType::kVideoFrameKey
: VideoFrameType::kVideoFrameDelta;
EXPECT_EQ(encoded_frame[0]._frameType, expected_type);
EXPECT_EQ(encoded_frame[0].SpatialIndex().value_or(-1), 1);
EXPECT_EQ(encoded_frame[1].SpatialIndex().value_or(-1), 2);
}
// Enable the first layer back.
// Allocate high bit rate to avoid frame dropping due to rate control.
for (size_t tl_idx = 0; tl_idx < num_temporal_layers; ++tl_idx) {
bitrate_allocation.SetBitrate(
0, tl_idx, codec_settings_.spatialLayers[1].targetBitrate * 1000 * 2);
}
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
for (size_t frame_num = 0; frame_num < num_frames_to_encode; ++frame_num) {
SetWaitForEncodedFramesThreshold(num_spatial_layers);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
ASSERT_EQ(encoded_frame.size(), 3u);
// SS available immediatly after switching on.
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.ss_data_available,
frame_num == 0);
// Keyframe should be generated when enabling lower layers.
const VideoFrameType expected_type = frame_num == 0
? VideoFrameType::kVideoFrameKey
: VideoFrameType::kVideoFrameDelta;
EXPECT_EQ(encoded_frame[0]._frameType, expected_type);
}
}
TEST(Vp9ImplTest, DisableEnableBaseLayerWithSvcControllerTriggersKeyFrame) {
// Configure encoder to produce N spatial layers. Encode frames for all
// layers. Then disable all but the last layer. Then reenable all back again.
test::ScopedFieldTrials override_field_trials(
"WebRTC-Vp9DependencyDescriptor/Enabled/");
const size_t num_spatial_layers = 3;
const size_t num_temporal_layers = 3;
// Must not be multiple of temporal period to exercise all code paths.
const size_t num_frames_to_encode = 5;
std::unique_ptr<VideoEncoder> encoder = VP9Encoder::Create();
VideoCodec codec_settings = DefaultCodecSettings();
ConfigureSvc(codec_settings, num_spatial_layers, num_temporal_layers);
codec_settings.VP9()->frameDroppingOn = false;
codec_settings.VP9()->flexibleMode = false;
codec_settings.VP9()->interLayerPred = InterLayerPredMode::kOnKeyPic;
codec_settings.mode = VideoCodecMode::kRealtimeVideo;
EXPECT_EQ(encoder->InitEncode(&codec_settings, kSettings),
WEBRTC_VIDEO_CODEC_OK);
VideoBitrateAllocation bitrate_allocation;
for (size_t sl_idx = 0; sl_idx < num_spatial_layers; ++sl_idx) {
for (size_t tl_idx = 0; tl_idx < num_temporal_layers; ++tl_idx) {
// Allocate high bit rate to avoid frame dropping due to rate control.
bitrate_allocation.SetBitrate(
sl_idx, tl_idx,
codec_settings.spatialLayers[sl_idx].targetBitrate * 1000 * 2);
}
}
encoder->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings.maxFramerate));
EncodedVideoFrameProducer producer(*encoder);
producer.SetResolution({kWidth, kHeight});
std::vector<EncodedVideoFrameProducer::EncodedFrame> frames =
producer.SetNumInputFrames(num_frames_to_encode).Encode();
ASSERT_THAT(frames, SizeIs(num_frames_to_encode * num_spatial_layers));
// Disable all but top spatial layer.
for (size_t sl_idx = 0; sl_idx < num_spatial_layers - 1; ++sl_idx) {
for (size_t tl_idx = 0; tl_idx < num_temporal_layers; ++tl_idx) {
bitrate_allocation.SetBitrate(sl_idx, tl_idx, 0);
}
}
encoder->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings.maxFramerate));
frames = producer.SetNumInputFrames(num_frames_to_encode).Encode();
EXPECT_THAT(frames, SizeIs(num_frames_to_encode));
for (const auto& frame : frames) {
// Expect no key-frames generated.
EXPECT_FALSE(frame.codec_specific_info.template_structure);
ASSERT_TRUE(frame.codec_specific_info.generic_frame_info);
EXPECT_EQ(frame.codec_specific_info.generic_frame_info->spatial_id, 2);
}
frames = producer.ForceKeyFrame().SetNumInputFrames(1).Encode();
ASSERT_THAT(frames, SizeIs(1));
// Key-frame should be produced.
EXPECT_EQ(frames[0].encoded_image._frameType, VideoFrameType::kVideoFrameKey);
ASSERT_TRUE(frames[0].codec_specific_info.template_structure);
ASSERT_TRUE(frames[0].codec_specific_info.generic_frame_info);
EXPECT_EQ(frames[0].codec_specific_info.generic_frame_info->spatial_id, 2);
frames = producer.SetNumInputFrames(num_frames_to_encode).Encode();
ASSERT_THAT(frames, SizeIs(num_frames_to_encode));
for (const auto& frame : frames) {
EXPECT_EQ(frame.encoded_image._frameType, VideoFrameType::kVideoFrameDelta);
EXPECT_FALSE(frame.codec_specific_info.template_structure);
ASSERT_TRUE(frame.codec_specific_info.generic_frame_info);
EXPECT_EQ(frame.codec_specific_info.generic_frame_info->spatial_id, 2);
}
// Enable the second layer back.
// Allocate high bit rate to avoid frame dropping due to rate control.
for (size_t tl_idx = 0; tl_idx < num_temporal_layers; ++tl_idx) {
bitrate_allocation.SetBitrate(
1, tl_idx, codec_settings.spatialLayers[0].targetBitrate * 1000 * 2);
}
encoder->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings.maxFramerate));
frames = producer.SetNumInputFrames(num_frames_to_encode).Encode();
ASSERT_THAT(frames, SizeIs(num_frames_to_encode * 2));
EXPECT_EQ(frames[0].encoded_image._frameType, VideoFrameType::kVideoFrameKey);
EXPECT_TRUE(frames[0].codec_specific_info.template_structure);
ASSERT_TRUE(frames[0].codec_specific_info.generic_frame_info);
EXPECT_EQ(frames[0].codec_specific_info.generic_frame_info->spatial_id, 1);
for (size_t i = 1; i < frames.size(); ++i) {
EXPECT_EQ(frames[i].encoded_image._frameType,
VideoFrameType::kVideoFrameDelta);
EXPECT_FALSE(frames[i].codec_specific_info.template_structure);
ASSERT_TRUE(frames[i].codec_specific_info.generic_frame_info);
EXPECT_EQ(frames[i].codec_specific_info.generic_frame_info->spatial_id,
1 + static_cast<int>(i % 2));
}
// Enable the first layer back.
// Allocate high bit rate to avoid frame dropping due to rate control.
for (size_t tl_idx = 0; tl_idx < num_temporal_layers; ++tl_idx) {
bitrate_allocation.SetBitrate(
0, tl_idx, codec_settings.spatialLayers[1].targetBitrate * 1000 * 2);
}
encoder->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings.maxFramerate));
frames = producer.SetNumInputFrames(num_frames_to_encode).Encode();
ASSERT_THAT(frames, SizeIs(num_frames_to_encode * 3));
EXPECT_TRUE(frames[0].codec_specific_info.template_structure);
ASSERT_TRUE(frames[0].codec_specific_info.generic_frame_info);
EXPECT_EQ(frames[0].codec_specific_info.generic_frame_info->spatial_id, 0);
for (size_t i = 1; i < frames.size(); ++i) {
EXPECT_FALSE(frames[i].codec_specific_info.template_structure);
ASSERT_TRUE(frames[i].codec_specific_info.generic_frame_info);
EXPECT_EQ(frames[i].codec_specific_info.generic_frame_info->spatial_id,
static_cast<int>(i % 3));
}
}
TEST_F(TestVp9Impl, DisableEnableBaseLayerTriggersKeyFrameForScreenshare) {
// Configure encoder to produce N spatial layers. Encode frames for all
// layers. Then disable all but the last layer. Then reenable all back again.
const size_t num_spatial_layers = 3;
const size_t num_frames_to_encode = 5;
ConfigureSvc(codec_settings_, num_spatial_layers);
codec_settings_.VP9()->frameDroppingOn = false;
codec_settings_.mode = VideoCodecMode::kScreensharing;
codec_settings_.VP9()->interLayerPred = InterLayerPredMode::kOn;
codec_settings_.VP9()->flexibleMode = true;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
VideoBitrateAllocation bitrate_allocation;
for (size_t sl_idx = 0; sl_idx < num_spatial_layers; ++sl_idx) {
// Allocate high bit rate to avoid frame dropping due to rate control.
bitrate_allocation.SetBitrate(
sl_idx, 0,
codec_settings_.spatialLayers[sl_idx].targetBitrate * 1000 * 2);
}
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
for (size_t frame_num = 0; frame_num < num_frames_to_encode; ++frame_num) {
SetWaitForEncodedFramesThreshold(num_spatial_layers);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.ss_data_available,
frame_num == 0);
}
// Disable all but top layer.
for (size_t sl_idx = 0; sl_idx < num_spatial_layers - 1; ++sl_idx) {
bitrate_allocation.SetBitrate(sl_idx, 0, 0);
}
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
for (size_t frame_num = 0; frame_num < num_frames_to_encode; ++frame_num) {
SetWaitForEncodedFramesThreshold(1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
// SS available immediatly after switching off.
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.ss_data_available,
frame_num == 0);
// No key-frames generated for disabling layers.
EXPECT_EQ(encoded_frame[0]._frameType, VideoFrameType::kVideoFrameDelta);
EXPECT_EQ(encoded_frame[0].SpatialIndex().value_or(-1), 2);
}
// Force key-frame.
std::vector<VideoFrameType> frame_types = {VideoFrameType::kVideoFrameKey};
SetWaitForEncodedFramesThreshold(1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), &frame_types));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
// Key-frame should be produced.
EXPECT_EQ(encoded_frame[0]._frameType, VideoFrameType::kVideoFrameKey);
// Enable the second layer back.
// Allocate high bit rate to avoid frame dropping due to rate control.
bitrate_allocation.SetBitrate(
1, 0, codec_settings_.spatialLayers[0].targetBitrate * 1000 * 2);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
for (size_t frame_num = 0; frame_num < num_frames_to_encode; ++frame_num) {
SetWaitForEncodedFramesThreshold(2);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
ASSERT_EQ(encoded_frame.size(), 2u);
// SS available immediatly after switching on.
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.ss_data_available,
frame_num == 0);
// Keyframe should be generated when enabling lower layers.
const VideoFrameType expected_type = frame_num == 0
? VideoFrameType::kVideoFrameKey
: VideoFrameType::kVideoFrameDelta;
EXPECT_EQ(encoded_frame[0]._frameType, expected_type);
EXPECT_EQ(encoded_frame[0].SpatialIndex().value_or(-1), 1);
EXPECT_EQ(encoded_frame[1].SpatialIndex().value_or(-1), 2);
}
// Enable the first layer back.
// Allocate high bit rate to avoid frame dropping due to rate control.
bitrate_allocation.SetBitrate(
0, 0, codec_settings_.spatialLayers[1].targetBitrate * 1000 * 2);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
for (size_t frame_num = 0; frame_num < num_frames_to_encode; ++frame_num) {
SetWaitForEncodedFramesThreshold(num_spatial_layers);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
ASSERT_EQ(encoded_frame.size(), 3u);
// SS available immediatly after switching on.
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.ss_data_available,
frame_num == 0);
// Keyframe should be generated when enabling lower layers.
const VideoFrameType expected_type = frame_num == 0
? VideoFrameType::kVideoFrameKey
: VideoFrameType::kVideoFrameDelta;
EXPECT_EQ(encoded_frame[0]._frameType, expected_type);
}
}
TEST_F(TestVp9Impl, EndOfPicture) {
const size_t num_spatial_layers = 2;
ConfigureSvc(codec_settings_, num_spatial_layers);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
// Encode both base and upper layers. Check that end-of-superframe flag is
// set on upper layer frame but not on base layer frame.
VideoBitrateAllocation bitrate_allocation;
bitrate_allocation.SetBitrate(
0, 0, codec_settings_.spatialLayers[0].targetBitrate * 1000);
bitrate_allocation.SetBitrate(
1, 0, codec_settings_.spatialLayers[1].targetBitrate * 1000);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
SetWaitForEncodedFramesThreshold(2);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> frames;
std::vector<CodecSpecificInfo> codec_specific;
ASSERT_TRUE(WaitForEncodedFrames(&frames, &codec_specific));
EXPECT_FALSE(codec_specific[0].end_of_picture);
EXPECT_TRUE(codec_specific[1].end_of_picture);
// Encode only base layer. Check that end-of-superframe flag is
// set on base layer frame.
bitrate_allocation.SetBitrate(1, 0, 0);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
SetWaitForEncodedFramesThreshold(1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&frames, &codec_specific));
EXPECT_FALSE(frames[0].SpatialIndex());
EXPECT_TRUE(codec_specific[0].end_of_picture);
}
TEST_F(TestVp9Impl, InterLayerPred) {
const size_t num_spatial_layers = 2;
ConfigureSvc(codec_settings_, num_spatial_layers);
codec_settings_.VP9()->frameDroppingOn = false;
VideoBitrateAllocation bitrate_allocation;
for (size_t i = 0; i < num_spatial_layers; ++i) {
bitrate_allocation.SetBitrate(
i, 0, codec_settings_.spatialLayers[i].targetBitrate * 1000);
}
const std::vector<InterLayerPredMode> inter_layer_pred_modes = {
InterLayerPredMode::kOff, InterLayerPredMode::kOn,
InterLayerPredMode::kOnKeyPic};
for (const InterLayerPredMode inter_layer_pred : inter_layer_pred_modes) {
codec_settings_.VP9()->interLayerPred = inter_layer_pred;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
SetWaitForEncodedFramesThreshold(2);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> frames;
std::vector<CodecSpecificInfo> codec_specific;
ASSERT_TRUE(WaitForEncodedFrames(&frames, &codec_specific));
// Key frame.
ASSERT_EQ(frames[0].SpatialIndex(), 0);
ASSERT_FALSE(codec_specific[0].codecSpecific.VP9.inter_pic_predicted);
EXPECT_FALSE(codec_specific[0].codecSpecific.VP9.inter_layer_predicted);
EXPECT_EQ(codec_specific[0].codecSpecific.VP9.non_ref_for_inter_layer_pred,
inter_layer_pred == InterLayerPredMode::kOff);
EXPECT_TRUE(codec_specific[0].codecSpecific.VP9.ss_data_available);
ASSERT_EQ(frames[1].SpatialIndex(), 1);
ASSERT_FALSE(codec_specific[1].codecSpecific.VP9.inter_pic_predicted);
EXPECT_EQ(codec_specific[1].codecSpecific.VP9.inter_layer_predicted,
inter_layer_pred == InterLayerPredMode::kOn ||
inter_layer_pred == InterLayerPredMode::kOnKeyPic);
EXPECT_EQ(codec_specific[1].codecSpecific.VP9.ss_data_available,
inter_layer_pred == InterLayerPredMode::kOff);
EXPECT_TRUE(
codec_specific[1].codecSpecific.VP9.non_ref_for_inter_layer_pred);
// Delta frame.
SetWaitForEncodedFramesThreshold(2);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&frames, &codec_specific));
ASSERT_EQ(frames[0].SpatialIndex(), 0);
ASSERT_TRUE(codec_specific[0].codecSpecific.VP9.inter_pic_predicted);
EXPECT_FALSE(codec_specific[0].codecSpecific.VP9.inter_layer_predicted);
EXPECT_EQ(codec_specific[0].codecSpecific.VP9.non_ref_for_inter_layer_pred,
inter_layer_pred != InterLayerPredMode::kOn);
EXPECT_FALSE(codec_specific[0].codecSpecific.VP9.ss_data_available);
ASSERT_EQ(frames[1].SpatialIndex(), 1);
ASSERT_TRUE(codec_specific[1].codecSpecific.VP9.inter_pic_predicted);
EXPECT_EQ(codec_specific[1].codecSpecific.VP9.inter_layer_predicted,
inter_layer_pred == InterLayerPredMode::kOn);
EXPECT_TRUE(
codec_specific[1].codecSpecific.VP9.non_ref_for_inter_layer_pred);
EXPECT_FALSE(codec_specific[1].codecSpecific.VP9.ss_data_available);
}
}
TEST_F(TestVp9Impl,
EnablingUpperLayerTriggersKeyFrameIfInterLayerPredIsDisabled) {
const size_t num_spatial_layers = 3;
const size_t num_frames_to_encode = 2;
ConfigureSvc(codec_settings_, num_spatial_layers);
codec_settings_.VP9()->frameDroppingOn = false;
const std::vector<InterLayerPredMode> inter_layer_pred_modes = {
InterLayerPredMode::kOff, InterLayerPredMode::kOn,
InterLayerPredMode::kOnKeyPic};
for (const InterLayerPredMode inter_layer_pred : inter_layer_pred_modes) {
codec_settings_.VP9()->interLayerPred = inter_layer_pred;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
VideoBitrateAllocation bitrate_allocation;
for (size_t sl_idx = 0; sl_idx < num_spatial_layers; ++sl_idx) {
bitrate_allocation.SetBitrate(
sl_idx, 0,
codec_settings_.spatialLayers[sl_idx].targetBitrate * 1000);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
for (size_t frame_num = 0; frame_num < num_frames_to_encode;
++frame_num) {
SetWaitForEncodedFramesThreshold(sl_idx + 1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
const bool is_first_upper_layer_frame = (sl_idx > 0 && frame_num == 0);
if (is_first_upper_layer_frame) {
if (inter_layer_pred == InterLayerPredMode::kOn) {
EXPECT_EQ(encoded_frame[0]._frameType,
VideoFrameType::kVideoFrameDelta);
} else {
EXPECT_EQ(encoded_frame[0]._frameType,
VideoFrameType::kVideoFrameKey);
}
} else if (sl_idx == 0 && frame_num == 0) {
EXPECT_EQ(encoded_frame[0]._frameType,
VideoFrameType::kVideoFrameKey);
} else {
for (size_t i = 0; i <= sl_idx; ++i) {
EXPECT_EQ(encoded_frame[i]._frameType,
VideoFrameType::kVideoFrameDelta);
}
}
}
}
}
}
TEST_F(TestVp9Impl,
EnablingUpperLayerUnsetsInterPicPredictedInInterlayerPredModeOn) {
const size_t num_spatial_layers = 3;
const size_t num_frames_to_encode = 2;
ConfigureSvc(codec_settings_, num_spatial_layers);
codec_settings_.VP9()->frameDroppingOn = false;
codec_settings_.VP9()->flexibleMode = false;
const std::vector<InterLayerPredMode> inter_layer_pred_modes = {
InterLayerPredMode::kOff, InterLayerPredMode::kOn,
InterLayerPredMode::kOnKeyPic};
for (const InterLayerPredMode inter_layer_pred : inter_layer_pred_modes) {
codec_settings_.VP9()->interLayerPred = inter_layer_pred;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
VideoBitrateAllocation bitrate_allocation;
for (size_t sl_idx = 0; sl_idx < num_spatial_layers; ++sl_idx) {
bitrate_allocation.SetBitrate(
sl_idx, 0,
codec_settings_.spatialLayers[sl_idx].targetBitrate * 1000);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
for (size_t frame_num = 0; frame_num < num_frames_to_encode;
++frame_num) {
SetWaitForEncodedFramesThreshold(sl_idx + 1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
ASSERT_EQ(codec_specific_info.size(), sl_idx + 1);
for (size_t i = 0; i <= sl_idx; ++i) {
const bool is_keyframe =
encoded_frame[0]._frameType == VideoFrameType::kVideoFrameKey;
const bool is_first_upper_layer_frame =
(i == sl_idx && frame_num == 0);
// Interframe references are there, unless it's a keyframe,
// or it's a first activated frame in a upper layer
const bool expect_no_references =
is_keyframe || (is_first_upper_layer_frame &&
inter_layer_pred == InterLayerPredMode::kOn);
EXPECT_EQ(
codec_specific_info[i].codecSpecific.VP9.inter_pic_predicted,
!expect_no_references);
}
}
}
}
}
TEST_F(TestVp9Impl, EnablingDisablingUpperLayerInTheSameGof) {
const size_t num_spatial_layers = 2;
const size_t num_temporal_layers = 2;
ConfigureSvc(codec_settings_, num_spatial_layers, num_temporal_layers);
codec_settings_.VP9()->frameDroppingOn = false;
codec_settings_.VP9()->flexibleMode = false;
codec_settings_.VP9()->interLayerPred = InterLayerPredMode::kOn;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
VideoBitrateAllocation bitrate_allocation;
// Enable both spatial and both temporal layers.
bitrate_allocation.SetBitrate(
0, 0, codec_settings_.spatialLayers[0].targetBitrate * 1000 / 2);
bitrate_allocation.SetBitrate(
0, 1, codec_settings_.spatialLayers[0].targetBitrate * 1000 / 2);
bitrate_allocation.SetBitrate(
1, 0, codec_settings_.spatialLayers[1].targetBitrate * 1000 / 2);
bitrate_allocation.SetBitrate(
1, 1, codec_settings_.spatialLayers[1].targetBitrate * 1000 / 2);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
// Encode 3 frames.
for (int i = 0; i < 3; ++i) {
SetWaitForEncodedFramesThreshold(2);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
ASSERT_EQ(codec_specific_info.size(), 2u);
}
// Disable SL1 layer.
bitrate_allocation.SetBitrate(1, 0, 0);
bitrate_allocation.SetBitrate(1, 1, 0);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
// Encode 1 frame.
SetWaitForEncodedFramesThreshold(1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
ASSERT_EQ(codec_specific_info.size(), 1u);
EXPECT_EQ(encoded_frame[0]._frameType, VideoFrameType::kVideoFrameDelta);
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.temporal_idx, 1);
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.inter_pic_predicted, true);
// Enable SL1 layer.
bitrate_allocation.SetBitrate(
1, 0, codec_settings_.spatialLayers[1].targetBitrate * 1000 / 2);
bitrate_allocation.SetBitrate(
1, 1, codec_settings_.spatialLayers[1].targetBitrate * 1000 / 2);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
// Encode 1 frame.
SetWaitForEncodedFramesThreshold(2);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
ASSERT_EQ(codec_specific_info.size(), 2u);
EXPECT_EQ(encoded_frame[0]._frameType, VideoFrameType::kVideoFrameDelta);
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.temporal_idx, 0);
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.inter_pic_predicted, true);
EXPECT_EQ(codec_specific_info[1].codecSpecific.VP9.inter_pic_predicted, true);
}
TEST_F(TestVp9Impl, EnablingDisablingUpperLayerAccrossGof) {
const size_t num_spatial_layers = 2;
const size_t num_temporal_layers = 2;
ConfigureSvc(codec_settings_, num_spatial_layers, num_temporal_layers);
codec_settings_.VP9()->frameDroppingOn = false;
codec_settings_.VP9()->flexibleMode = false;
codec_settings_.VP9()->interLayerPred = InterLayerPredMode::kOn;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
VideoBitrateAllocation bitrate_allocation;
// Enable both spatial and both temporal layers.
bitrate_allocation.SetBitrate(
0, 0, codec_settings_.spatialLayers[0].targetBitrate * 1000 / 2);
bitrate_allocation.SetBitrate(
0, 1, codec_settings_.spatialLayers[0].targetBitrate * 1000 / 2);
bitrate_allocation.SetBitrate(
1, 0, codec_settings_.spatialLayers[1].targetBitrate * 1000 / 2);
bitrate_allocation.SetBitrate(
1, 1, codec_settings_.spatialLayers[1].targetBitrate * 1000 / 2);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
std::vector<EncodedImage> encoded_frame;
std::vector<CodecSpecificInfo> codec_specific_info;
// Encode 3 frames.
for (int i = 0; i < 3; ++i) {
SetWaitForEncodedFramesThreshold(2);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
ASSERT_EQ(codec_specific_info.size(), 2u);
}
// Disable SL1 layer.
bitrate_allocation.SetBitrate(1, 0, 0);
bitrate_allocation.SetBitrate(1, 1, 0);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
// Encode 11 frames. More than Gof length 2, and odd to end at TL1 frame.
for (int i = 0; i < 11; ++i) {
SetWaitForEncodedFramesThreshold(1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
ASSERT_EQ(codec_specific_info.size(), 1u);
EXPECT_EQ(encoded_frame[0]._frameType, VideoFrameType::kVideoFrameDelta);
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.temporal_idx, 1 - i % 2);
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.inter_pic_predicted,
true);
}
// Enable SL1 layer.
bitrate_allocation.SetBitrate(
1, 0, codec_settings_.spatialLayers[1].targetBitrate * 1000 / 2);
bitrate_allocation.SetBitrate(
1, 1, codec_settings_.spatialLayers[1].targetBitrate * 1000 / 2);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
// Encode 1 frame.
SetWaitForEncodedFramesThreshold(2);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frame, &codec_specific_info));
ASSERT_EQ(codec_specific_info.size(), 2u);
EXPECT_EQ(encoded_frame[0]._frameType, VideoFrameType::kVideoFrameDelta);
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.temporal_idx, 0);
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.inter_pic_predicted, true);
EXPECT_EQ(codec_specific_info[1].codecSpecific.VP9.inter_pic_predicted,
false);
}
TEST_F(TestVp9Impl, EnablingNewLayerInScreenshareForcesAllLayersWithSS) {
const size_t num_spatial_layers = 3;
// Chosen by hand, the 2nd frame is dropped with configured per-layer max
// framerate.
const size_t num_frames_to_encode_before_drop = 1;
codec_settings_.maxFramerate = 30;
ConfigureSvc(codec_settings_, num_spatial_layers);
codec_settings_.spatialLayers[0].maxFramerate = 5.0;
// use 30 for the SL 1 instead of 10, so even if SL 0 frame is dropped due to
// framerate capping we would still get back at least a middle layer. It
// simplifies the test.
codec_settings_.spatialLayers[1].maxFramerate = 30.0;
codec_settings_.spatialLayers[2].maxFramerate = 30.0;
codec_settings_.VP9()->frameDroppingOn = false;
codec_settings_.mode = VideoCodecMode::kScreensharing;
codec_settings_.VP9()->interLayerPred = InterLayerPredMode::kOn;
codec_settings_.VP9()->flexibleMode = true;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
// Enable all but the last layer.
VideoBitrateAllocation bitrate_allocation;
for (size_t sl_idx = 0; sl_idx < num_spatial_layers - 1; ++sl_idx) {
bitrate_allocation.SetBitrate(
sl_idx, 0, codec_settings_.spatialLayers[sl_idx].targetBitrate * 1000);
}
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
// Encode enough frames to force drop due to framerate capping.
for (size_t frame_num = 0; frame_num < num_frames_to_encode_before_drop;
++frame_num) {
SetWaitForEncodedFramesThreshold(num_spatial_layers - 1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frames;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific_info));
}
// Enable the last layer.
bitrate_allocation.SetBitrate(
num_spatial_layers - 1, 0,
codec_settings_.spatialLayers[num_spatial_layers - 1].targetBitrate *
1000);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
// All layers are encoded, even though frame dropping should happen.
SetWaitForEncodedFramesThreshold(num_spatial_layers);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
// Now all 3 layers should be encoded.
std::vector<EncodedImage> encoded_frames;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific_info));
EXPECT_EQ(encoded_frames.size(), 3u);
// Scalability structure has to be triggered.
EXPECT_TRUE(codec_specific_info[0].codecSpecific.VP9.ss_data_available);
}
TEST_F(TestVp9Impl, ScreenshareFrameDropping) {
const int num_spatial_layers = 3;
const int num_frames_to_detect_drops = 2;
codec_settings_.maxFramerate = 30;
ConfigureSvc(codec_settings_, num_spatial_layers);
// use 30 for the SL0 and SL1 because it simplifies the test.
codec_settings_.spatialLayers[0].maxFramerate = 30.0;
codec_settings_.spatialLayers[1].maxFramerate = 30.0;
codec_settings_.spatialLayers[2].maxFramerate = 30.0;
codec_settings_.VP9()->frameDroppingOn = true;
codec_settings_.mode = VideoCodecMode::kScreensharing;
codec_settings_.VP9()->interLayerPred = InterLayerPredMode::kOn;
codec_settings_.VP9()->flexibleMode = true;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
// Enable all but the last layer.
VideoBitrateAllocation bitrate_allocation;
// Very low bitrate for the lowest spatial layer to ensure rate-control drops.
bitrate_allocation.SetBitrate(0, 0, 1000);
bitrate_allocation.SetBitrate(
1, 0, codec_settings_.spatialLayers[1].targetBitrate * 1000);
// Disable highest layer.
bitrate_allocation.SetBitrate(2, 0, 0);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
bool frame_dropped = false;
// Encode enough frames to force drop due to rate-control.
for (size_t frame_num = 0; frame_num < num_frames_to_detect_drops;
++frame_num) {
SetWaitForEncodedFramesThreshold(1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frames;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific_info));
EXPECT_LE(encoded_frames.size(), 2u);
EXPECT_GE(encoded_frames.size(), 1u);
if (encoded_frames.size() == 1) {
frame_dropped = true;
// Dropped frame is on the SL0.
EXPECT_EQ(encoded_frames[0].SpatialIndex(), 1);
}
}
EXPECT_TRUE(frame_dropped);
// Enable the last layer.
bitrate_allocation.SetBitrate(
2, 0, codec_settings_.spatialLayers[2].targetBitrate * 1000);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
SetWaitForEncodedFramesThreshold(1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frames;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific_info));
// No drop allowed.
EXPECT_EQ(encoded_frames.size(), 3u);
// Verify that frame-dropping is re-enabled back.
frame_dropped = false;
// Encode enough frames to force drop due to rate-control.
for (size_t frame_num = 0; frame_num < num_frames_to_detect_drops;
++frame_num) {
SetWaitForEncodedFramesThreshold(1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frames;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific_info));
EXPECT_LE(encoded_frames.size(), 3u);
EXPECT_GE(encoded_frames.size(), 2u);
if (encoded_frames.size() == 2) {
frame_dropped = true;
// Dropped frame is on the SL0.
EXPECT_EQ(encoded_frames[0].SpatialIndex(), 1);
EXPECT_EQ(encoded_frames[1].SpatialIndex(), 2);
}
}
EXPECT_TRUE(frame_dropped);
}
TEST_F(TestVp9Impl, RemovingLayerIsNotDelayedInScreenshareAndAddsSsInfo) {
const size_t num_spatial_layers = 3;
// Chosen by hand, the 2nd frame is dropped with configured per-layer max
// framerate.
const size_t num_frames_to_encode_before_drop = 1;
// Chosen by hand, exactly 5 frames are dropped for input fps=30 and max
// framerate = 5.
const size_t num_dropped_frames = 5;
codec_settings_.maxFramerate = 30;
ConfigureSvc(codec_settings_, num_spatial_layers);
codec_settings_.spatialLayers[0].maxFramerate = 5.0;
// use 30 for the SL 1 instead of 5, so even if SL 0 frame is dropped due to
// framerate capping we would still get back at least a middle layer. It
// simplifies the test.
codec_settings_.spatialLayers[1].maxFramerate = 30.0;
codec_settings_.spatialLayers[2].maxFramerate = 30.0;
codec_settings_.VP9()->frameDroppingOn = false;
codec_settings_.mode = VideoCodecMode::kScreensharing;
codec_settings_.VP9()->interLayerPred = InterLayerPredMode::kOn;
codec_settings_.VP9()->flexibleMode = true;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
// All layers are enabled from the start.
VideoBitrateAllocation bitrate_allocation;
for (size_t sl_idx = 0; sl_idx < num_spatial_layers; ++sl_idx) {
bitrate_allocation.SetBitrate(
sl_idx, 0, codec_settings_.spatialLayers[sl_idx].targetBitrate * 1000);
}
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
// Encode enough frames to force drop due to framerate capping.
for (size_t frame_num = 0; frame_num < num_frames_to_encode_before_drop;
++frame_num) {
SetWaitForEncodedFramesThreshold(num_spatial_layers);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frames;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific_info));
}
// Now the first layer should not have frames in it.
for (size_t frame_num = 0; frame_num < num_dropped_frames - 2; ++frame_num) {
SetWaitForEncodedFramesThreshold(2);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
// First layer is dropped due to frame rate cap. The last layer should not
// be enabled yet.
std::vector<EncodedImage> encoded_frames;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific_info));
// First layer is skipped.
EXPECT_EQ(encoded_frames[0].SpatialIndex().value_or(-1), 1);
}
// Disable the last layer.
bitrate_allocation.SetBitrate(num_spatial_layers - 1, 0, 0);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
// Still expected to drop first layer. Last layer has to be disable also.
for (size_t frame_num = num_dropped_frames - 2;
frame_num < num_dropped_frames; ++frame_num) {
// Expect back one frame.
SetWaitForEncodedFramesThreshold(1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
// First layer is dropped due to frame rate cap. The last layer should not
// be enabled yet.
std::vector<EncodedImage> encoded_frames;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific_info));
// First layer is skipped.
EXPECT_EQ(encoded_frames[0].SpatialIndex().value_or(-1), 1);
// No SS data on non-base spatial layer.
EXPECT_FALSE(codec_specific_info[0].codecSpecific.VP9.ss_data_available);
}
SetWaitForEncodedFramesThreshold(2);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
std::vector<EncodedImage> encoded_frames;
std::vector<CodecSpecificInfo> codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific_info));
// First layer is not skipped now.
EXPECT_EQ(encoded_frames[0].SpatialIndex().value_or(-1), 0);
// SS data should be present.
EXPECT_TRUE(codec_specific_info[0].codecSpecific.VP9.ss_data_available);
}
TEST_F(TestVp9Impl, DisableNewLayerInVideoDelaysSsInfoTillTL0) {
const size_t num_spatial_layers = 3;
const size_t num_temporal_layers = 2;
// Chosen by hand, the 2nd frame is dropped with configured per-layer max
// framerate.
ConfigureSvc(codec_settings_, num_spatial_layers, num_temporal_layers);
codec_settings_.VP9()->frameDroppingOn = false;
codec_settings_.mode = VideoCodecMode::kRealtimeVideo;
codec_settings_.VP9()->interLayerPred = InterLayerPredMode::kOnKeyPic;
codec_settings_.VP9()->flexibleMode = false;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
// Enable all the layers.
VideoBitrateAllocation bitrate_allocation;
for (size_t sl_idx = 0; sl_idx < num_spatial_layers; ++sl_idx) {
for (size_t tl_idx = 0; tl_idx < num_temporal_layers; ++tl_idx) {
bitrate_allocation.SetBitrate(
sl_idx, tl_idx,
codec_settings_.spatialLayers[sl_idx].targetBitrate * 1000 /
num_temporal_layers);
}
}
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
std::vector<EncodedImage> encoded_frames;
std::vector<CodecSpecificInfo> codec_specific_info;
// Encode one TL0 frame
SetWaitForEncodedFramesThreshold(num_spatial_layers);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific_info));
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.temporal_idx, 0u);
// Disable the last layer.
for (size_t tl_idx = 0; tl_idx < num_temporal_layers; ++tl_idx) {
bitrate_allocation.SetBitrate(num_spatial_layers - 1, tl_idx, 0);
}
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
// Next is TL1 frame. The last layer is disabled immediately, but SS structure
// is not provided here.
SetWaitForEncodedFramesThreshold(num_spatial_layers - 1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific_info));
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.temporal_idx, 1u);
EXPECT_FALSE(codec_specific_info[0].codecSpecific.VP9.ss_data_available);
// Next is TL0 frame, which should have delayed SS structure.
SetWaitForEncodedFramesThreshold(num_spatial_layers - 1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific_info));
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.temporal_idx, 0u);
EXPECT_TRUE(codec_specific_info[0].codecSpecific.VP9.ss_data_available);
EXPECT_TRUE(codec_specific_info[0]
.codecSpecific.VP9.spatial_layer_resolution_present);
EXPECT_EQ(codec_specific_info[0].codecSpecific.VP9.num_spatial_layers,
num_spatial_layers - 1);
}
TEST_F(TestVp9Impl,
LowLayerMarkedAsRefIfHighLayerNotEncodedAndInterLayerPredIsEnabled) {
ConfigureSvc(codec_settings_, 3);
codec_settings_.VP9()->frameDroppingOn = false;
codec_settings_.VP9()->interLayerPred = InterLayerPredMode::kOn;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
VideoBitrateAllocation bitrate_allocation;
bitrate_allocation.SetBitrate(
0, 0, codec_settings_.spatialLayers[0].targetBitrate * 1000);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
EncodedImage encoded_frame;
CodecSpecificInfo codec_info;
ASSERT_TRUE(WaitForEncodedFrame(&encoded_frame, &codec_info));
EXPECT_TRUE(codec_info.codecSpecific.VP9.ss_data_available);
EXPECT_FALSE(codec_info.codecSpecific.VP9.non_ref_for_inter_layer_pred);
}
TEST_F(TestVp9Impl, ScalabilityStructureIsAvailableInFlexibleMode) {
codec_settings_.VP9()->flexibleMode = true;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
EncodedImage encoded_frame;
CodecSpecificInfo codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrame(&encoded_frame, &codec_specific_info));
EXPECT_TRUE(codec_specific_info.codecSpecific.VP9.ss_data_available);
}
TEST_F(TestVp9Impl, Profile0PreferredPixelFormats) {
EXPECT_THAT(encoder_->GetEncoderInfo().preferred_pixel_formats,
testing::UnorderedElementsAre(VideoFrameBuffer::Type::kNV12,
VideoFrameBuffer::Type::kI420));
}
TEST_F(TestVp9Impl, EncoderInfoWithoutResolutionBitrateLimits) {
EXPECT_TRUE(encoder_->GetEncoderInfo().resolution_bitrate_limits.empty());
}
TEST_F(TestVp9Impl, EncoderInfoWithBitrateLimitsFromFieldTrial) {
test::ScopedFieldTrials field_trials(
"WebRTC-VP9-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/");
SetUp();
EXPECT_THAT(
encoder_->GetEncoderInfo().resolution_bitrate_limits,
::testing::ElementsAre(
VideoEncoder::ResolutionBitrateLimits{123, 11000, 44000, 77000},
VideoEncoder::ResolutionBitrateLimits{456, 22000, 55000, 88000},
VideoEncoder::ResolutionBitrateLimits{789, 33000, 66000, 99000}));
}
TEST_F(TestVp9Impl, EncoderInfoFpsAllocation) {
const uint8_t kNumSpatialLayers = 3;
const uint8_t kNumTemporalLayers = 3;
codec_settings_.maxFramerate = 30;
codec_settings_.VP9()->numberOfSpatialLayers = kNumSpatialLayers;
codec_settings_.VP9()->numberOfTemporalLayers = kNumTemporalLayers;
for (uint8_t sl_idx = 0; sl_idx < kNumSpatialLayers; ++sl_idx) {
codec_settings_.spatialLayers[sl_idx].width = codec_settings_.width;
codec_settings_.spatialLayers[sl_idx].height = codec_settings_.height;
codec_settings_.spatialLayers[sl_idx].minBitrate =
codec_settings_.startBitrate;
codec_settings_.spatialLayers[sl_idx].maxBitrate =
codec_settings_.startBitrate;
codec_settings_.spatialLayers[sl_idx].targetBitrate =
codec_settings_.startBitrate;
codec_settings_.spatialLayers[sl_idx].active = true;
codec_settings_.spatialLayers[sl_idx].maxFramerate =
codec_settings_.maxFramerate;
}
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
FramerateFractions expected_fps_allocation[kMaxSpatialLayers];
expected_fps_allocation[0].push_back(EncoderInfo::kMaxFramerateFraction / 4);
expected_fps_allocation[0].push_back(EncoderInfo::kMaxFramerateFraction / 2);
expected_fps_allocation[0].push_back(EncoderInfo::kMaxFramerateFraction);
expected_fps_allocation[1] = expected_fps_allocation[0];
expected_fps_allocation[2] = expected_fps_allocation[0];
EXPECT_THAT(encoder_->GetEncoderInfo().fps_allocation,
ElementsAreArray(expected_fps_allocation));
}
TEST_F(TestVp9Impl, EncoderInfoFpsAllocationFlexibleMode) {
const uint8_t kNumSpatialLayers = 3;
codec_settings_.maxFramerate = 30;
codec_settings_.VP9()->numberOfSpatialLayers = kNumSpatialLayers;
codec_settings_.VP9()->numberOfTemporalLayers = 1;
codec_settings_.VP9()->flexibleMode = true;
VideoEncoder::RateControlParameters rate_params;
for (uint8_t sl_idx = 0; sl_idx < kNumSpatialLayers; ++sl_idx) {
codec_settings_.spatialLayers[sl_idx].width = codec_settings_.width;
codec_settings_.spatialLayers[sl_idx].height = codec_settings_.height;
codec_settings_.spatialLayers[sl_idx].minBitrate =
codec_settings_.startBitrate;
codec_settings_.spatialLayers[sl_idx].maxBitrate =
codec_settings_.startBitrate;
codec_settings_.spatialLayers[sl_idx].targetBitrate =
codec_settings_.startBitrate;
codec_settings_.spatialLayers[sl_idx].active = true;
// Force different frame rates for different layers, to verify that total
// fraction is correct.
codec_settings_.spatialLayers[sl_idx].maxFramerate =
codec_settings_.maxFramerate / (kNumSpatialLayers - sl_idx);
rate_params.bitrate.SetBitrate(sl_idx, 0,
codec_settings_.startBitrate * 1000);
}
rate_params.bandwidth_allocation =
DataRate::BitsPerSec(rate_params.bitrate.get_sum_bps());
rate_params.framerate_fps = codec_settings_.maxFramerate;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
// No temporal layers allowed when spatial layers have different fps targets.
FramerateFractions expected_fps_allocation[kMaxSpatialLayers];
expected_fps_allocation[0].push_back(EncoderInfo::kMaxFramerateFraction / 3);
expected_fps_allocation[1].push_back(EncoderInfo::kMaxFramerateFraction / 2);
expected_fps_allocation[2].push_back(EncoderInfo::kMaxFramerateFraction);
EXPECT_THAT(encoder_->GetEncoderInfo().fps_allocation,
::testing::ElementsAreArray(expected_fps_allocation));
// SetRates with current fps does not alter outcome.
encoder_->SetRates(rate_params);
EXPECT_THAT(encoder_->GetEncoderInfo().fps_allocation,
::testing::ElementsAreArray(expected_fps_allocation));
// Higher fps than the codec wants, should still not affect outcome.
rate_params.framerate_fps *= 2;
encoder_->SetRates(rate_params);
EXPECT_THAT(encoder_->GetEncoderInfo().fps_allocation,
::testing::ElementsAreArray(expected_fps_allocation));
}
class Vp9ImplWithLayeringTest
: public ::testing::TestWithParam<std::tuple<int, int, bool>> {
protected:
Vp9ImplWithLayeringTest()
: num_spatial_layers_(std::get<0>(GetParam())),
num_temporal_layers_(std::get<1>(GetParam())),
override_field_trials_(std::get<2>(GetParam())
? "WebRTC-Vp9ExternalRefCtrl/Enabled/"
: "") {}
const uint8_t num_spatial_layers_;
const uint8_t num_temporal_layers_;
const test::ScopedFieldTrials override_field_trials_;
};
TEST_P(Vp9ImplWithLayeringTest, FlexibleMode) {
// In flexible mode encoder wrapper obtains actual list of references from
// encoder and writes it into RTP payload descriptor. Check that reference
// list in payload descriptor matches the predefined one, which is used
// in non-flexible mode.
std::unique_ptr<VideoEncoder> encoder = VP9Encoder::Create();
VideoCodec codec_settings = DefaultCodecSettings();
codec_settings.VP9()->flexibleMode = true;
codec_settings.VP9()->frameDroppingOn = false;
codec_settings.VP9()->numberOfSpatialLayers = num_spatial_layers_;
codec_settings.VP9()->numberOfTemporalLayers = num_temporal_layers_;
EXPECT_EQ(encoder->InitEncode(&codec_settings, kSettings),
WEBRTC_VIDEO_CODEC_OK);
GofInfoVP9 gof;
if (num_temporal_layers_ == 1) {
gof.SetGofInfoVP9(kTemporalStructureMode1);
} else if (num_temporal_layers_ == 2) {
gof.SetGofInfoVP9(kTemporalStructureMode2);
} else if (num_temporal_layers_ == 3) {
gof.SetGofInfoVP9(kTemporalStructureMode3);
}
// Encode at least (num_frames_in_gof + 1) frames to verify references
// of non-key frame with gof_idx = 0.
int num_input_frames = gof.num_frames_in_gof + 1;
std::vector<EncodedVideoFrameProducer::EncodedFrame> frames =
EncodedVideoFrameProducer(*encoder)
.SetNumInputFrames(num_input_frames)
.SetResolution({kWidth, kHeight})
.Encode();
ASSERT_THAT(frames, SizeIs(num_input_frames * num_spatial_layers_));
for (size_t i = 0; i < frames.size(); ++i) {
const EncodedVideoFrameProducer::EncodedFrame& frame = frames[i];
const size_t picture_idx = i / num_spatial_layers_;
const size_t gof_idx = picture_idx % gof.num_frames_in_gof;
const CodecSpecificInfoVP9& vp9 =
frame.codec_specific_info.codecSpecific.VP9;
EXPECT_EQ(frame.encoded_image.SpatialIndex(),
num_spatial_layers_ == 1
? absl::nullopt
: absl::optional<int>(i % num_spatial_layers_))
<< "Frame " << i;
EXPECT_EQ(vp9.temporal_idx, num_temporal_layers_ == 1
? kNoTemporalIdx
: gof.temporal_idx[gof_idx])
<< "Frame " << i;
EXPECT_EQ(vp9.temporal_up_switch, gof.temporal_up_switch[gof_idx])
<< "Frame " << i;
if (picture_idx == 0) {
EXPECT_EQ(vp9.num_ref_pics, 0) << "Frame " << i;
} else {
EXPECT_THAT(rtc::MakeArrayView(vp9.p_diff, vp9.num_ref_pics),
UnorderedElementsAreArray(gof.pid_diff[gof_idx],
gof.num_ref_pics[gof_idx]))
<< "Frame " << i;
}
}
}
INSTANTIATE_TEST_SUITE_P(All,
Vp9ImplWithLayeringTest,
::testing::Combine(::testing::Values(1, 2, 3),
::testing::Values(1, 2, 3),
::testing::Bool()));
class TestVp9ImplFrameDropping : public TestVp9Impl {
protected:
void ModifyCodecSettings(VideoCodec* codec_settings) override {
webrtc::test::CodecSettings(kVideoCodecVP9, codec_settings);
// We need to encode quite a lot of frames in this test. Use low resolution
// to reduce execution time.
codec_settings->width = 64;
codec_settings->height = 64;
codec_settings->mode = VideoCodecMode::kScreensharing;
}
};
TEST_F(TestVp9ImplFrameDropping, PreEncodeFrameDropping) {
const size_t num_frames_to_encode = 100;
const float input_framerate_fps = 30.0;
const float video_duration_secs = num_frames_to_encode / input_framerate_fps;
const float expected_framerate_fps = 5.0f;
const float max_abs_framerate_error_fps = expected_framerate_fps * 0.1f;
codec_settings_.maxFramerate = static_cast<uint32_t>(expected_framerate_fps);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
VideoFrame input_frame = NextInputFrame();
for (size_t frame_num = 0; frame_num < num_frames_to_encode; ++frame_num) {
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(input_frame, nullptr));
const size_t timestamp = input_frame.timestamp() +
kVideoPayloadTypeFrequency / input_framerate_fps;
input_frame.set_timestamp(static_cast<uint32_t>(timestamp));
}
const size_t num_encoded_frames = GetNumEncodedFrames();
const float encoded_framerate_fps = num_encoded_frames / video_duration_secs;
EXPECT_NEAR(encoded_framerate_fps, expected_framerate_fps,
max_abs_framerate_error_fps);
}
TEST_F(TestVp9ImplFrameDropping, DifferentFrameratePerSpatialLayer) {
// Assign different frame rate to spatial layers and check that result frame
// rate is close to the assigned one.
const uint8_t num_spatial_layers = 3;
const float input_framerate_fps = 30.0;
const size_t video_duration_secs = 3;
const size_t num_input_frames = video_duration_secs * input_framerate_fps;
codec_settings_.VP9()->numberOfSpatialLayers = num_spatial_layers;
codec_settings_.VP9()->frameDroppingOn = false;
codec_settings_.VP9()->flexibleMode = true;
VideoBitrateAllocation bitrate_allocation;
for (uint8_t sl_idx = 0; sl_idx < num_spatial_layers; ++sl_idx) {
// Frame rate increases from low to high layer.
const uint32_t framerate_fps = 10 * (sl_idx + 1);
codec_settings_.spatialLayers[sl_idx].width = codec_settings_.width;
codec_settings_.spatialLayers[sl_idx].height = codec_settings_.height;
codec_settings_.spatialLayers[sl_idx].maxFramerate = framerate_fps;
codec_settings_.spatialLayers[sl_idx].minBitrate =
codec_settings_.startBitrate;
codec_settings_.spatialLayers[sl_idx].maxBitrate =
codec_settings_.startBitrate;
codec_settings_.spatialLayers[sl_idx].targetBitrate =
codec_settings_.startBitrate;
codec_settings_.spatialLayers[sl_idx].active = true;
bitrate_allocation.SetBitrate(
sl_idx, 0, codec_settings_.spatialLayers[sl_idx].targetBitrate * 1000);
}
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
VideoFrame input_frame = NextInputFrame();
for (size_t frame_num = 0; frame_num < num_input_frames; ++frame_num) {
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(input_frame, nullptr));
const size_t timestamp = input_frame.timestamp() +
kVideoPayloadTypeFrequency / input_framerate_fps;
input_frame.set_timestamp(static_cast<uint32_t>(timestamp));
}
std::vector<EncodedImage> encoded_frames;
std::vector<CodecSpecificInfo> codec_infos;
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_infos));
std::vector<size_t> num_encoded_frames(num_spatial_layers, 0);
for (EncodedImage& encoded_frame : encoded_frames) {
++num_encoded_frames[encoded_frame.SpatialIndex().value_or(0)];
}
for (uint8_t sl_idx = 0; sl_idx < num_spatial_layers; ++sl_idx) {
const float layer_target_framerate_fps =
codec_settings_.spatialLayers[sl_idx].maxFramerate;
const float layer_output_framerate_fps =
static_cast<float>(num_encoded_frames[sl_idx]) / video_duration_secs;
const float max_framerate_error_fps = layer_target_framerate_fps * 0.1f;
EXPECT_NEAR(layer_output_framerate_fps, layer_target_framerate_fps,
max_framerate_error_fps);
}
}
class TestVp9ImplProfile2 : public TestVp9Impl {
protected:
void SetUp() override {
// Profile 2 might not be available on some platforms until
// https://bugs.chromium.org/p/webm/issues/detail?id=1544 is solved.
bool profile_2_is_supported = false;
for (const auto& codec : SupportedVP9Codecs()) {
if (ParseSdpForVP9Profile(codec.parameters)
.value_or(VP9Profile::kProfile0) == VP9Profile::kProfile2) {
profile_2_is_supported = true;
}
}
if (!profile_2_is_supported)
return;
TestVp9Impl::SetUp();
input_frame_generator_ = test::CreateSquareFrameGenerator(
codec_settings_.width, codec_settings_.height,
test::FrameGeneratorInterface::OutputType::kI010,
absl::optional<int>());
}
std::unique_ptr<VideoEncoder> CreateEncoder() override {
cricket::VideoCodec profile2_codec;
profile2_codec.SetParam(kVP9FmtpProfileId,
VP9ProfileToString(VP9Profile::kProfile2));
return VP9Encoder::Create(profile2_codec);
}
std::unique_ptr<VideoDecoder> CreateDecoder() override {
return VP9Decoder::Create();
}
};
TEST_F(TestVp9ImplProfile2, EncodeDecode) {
if (!encoder_)
return;
VideoFrame input_frame = NextInputFrame();
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(input_frame, nullptr));
EncodedImage encoded_frame;
CodecSpecificInfo codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrame(&encoded_frame, &codec_specific_info));
// First frame should be a key frame.
encoded_frame._frameType = VideoFrameType::kVideoFrameKey;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, decoder_->Decode(encoded_frame, false, 0));
std::unique_ptr<VideoFrame> decoded_frame;
absl::optional<uint8_t> decoded_qp;
ASSERT_TRUE(WaitForDecodedFrame(&decoded_frame, &decoded_qp));
ASSERT_TRUE(decoded_frame);
// TODO(emircan): Add PSNR for different color depths.
EXPECT_GT(I420PSNR(*input_frame.video_frame_buffer()->ToI420(),
*decoded_frame->video_frame_buffer()->ToI420()),
31);
}
TEST_F(TestVp9Impl, EncodeWithDynamicRate) {
// Configured dynamic rate field trial and re-create the encoder.
test::ScopedFieldTrials field_trials(
"WebRTC-VideoRateControl/vp9_dynamic_rate:true/");
SetUp();
// Set 300kbps target with 100% headroom.
VideoEncoder::RateControlParameters params;
params.bandwidth_allocation = DataRate::BitsPerSec(300000);
params.bitrate.SetBitrate(0, 0, params.bandwidth_allocation.bps());
params.framerate_fps = 30.0;
encoder_->SetRates(params);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
EncodedImage encoded_frame;
CodecSpecificInfo codec_specific_info;
ASSERT_TRUE(WaitForEncodedFrame(&encoded_frame, &codec_specific_info));
// Set no headroom and encode again.
params.bandwidth_allocation = DataRate::Zero();
encoder_->SetRates(params);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrame(&encoded_frame, &codec_specific_info));
}
TEST_F(TestVp9Impl, ReenablingUpperLayerAfterKFWithInterlayerPredIsEnabled) {
const size_t num_spatial_layers = 2;
const int num_frames_to_encode = 10;
codec_settings_.VP9()->flexibleMode = true;
codec_settings_.VP9()->frameDroppingOn = false;
codec_settings_.VP9()->numberOfSpatialLayers = num_spatial_layers;
codec_settings_.VP9()->numberOfTemporalLayers = 1;
codec_settings_.VP9()->interLayerPred = InterLayerPredMode::kOn;
// Force low frame-rate, so all layers are present for all frames.
codec_settings_.maxFramerate = 5;
ConfigureSvc(codec_settings_, num_spatial_layers);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(&codec_settings_, kSettings));
VideoBitrateAllocation bitrate_allocation;
for (size_t sl_idx = 0; sl_idx < num_spatial_layers; ++sl_idx) {
bitrate_allocation.SetBitrate(
sl_idx, 0, codec_settings_.spatialLayers[sl_idx].targetBitrate * 1000);
}
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
std::vector<EncodedImage> encoded_frames;
std::vector<CodecSpecificInfo> codec_specific;
for (int i = 0; i < num_frames_to_encode; ++i) {
SetWaitForEncodedFramesThreshold(num_spatial_layers);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific));
EXPECT_EQ(encoded_frames.size(), num_spatial_layers);
}
// Disable the last layer.
bitrate_allocation.SetBitrate(num_spatial_layers - 1, 0, 0);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
for (int i = 0; i < num_frames_to_encode; ++i) {
SetWaitForEncodedFramesThreshold(num_spatial_layers - 1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific));
EXPECT_EQ(encoded_frames.size(), num_spatial_layers - 1);
}
std::vector<VideoFrameType> frame_types = {VideoFrameType::kVideoFrameKey};
// Force a key-frame with the last layer still disabled.
SetWaitForEncodedFramesThreshold(num_spatial_layers - 1);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->Encode(NextInputFrame(), &frame_types));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific));
EXPECT_EQ(encoded_frames.size(), num_spatial_layers - 1);
ASSERT_EQ(encoded_frames[0]._frameType, VideoFrameType::kVideoFrameKey);
// Re-enable the last layer.
bitrate_allocation.SetBitrate(
num_spatial_layers - 1, 0,
codec_settings_.spatialLayers[num_spatial_layers - 1].targetBitrate *
1000);
encoder_->SetRates(VideoEncoder::RateControlParameters(
bitrate_allocation, codec_settings_.maxFramerate));
SetWaitForEncodedFramesThreshold(num_spatial_layers);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Encode(NextInputFrame(), nullptr));
ASSERT_TRUE(WaitForEncodedFrames(&encoded_frames, &codec_specific));
EXPECT_EQ(encoded_frames.size(), num_spatial_layers);
EXPECT_EQ(encoded_frames[0]._frameType, VideoFrameType::kVideoFrameDelta);
}
TEST_F(TestVp9Impl, HandlesEmptyInitDecode) {
std::unique_ptr<VideoDecoder> decoder = CreateDecoder();
// Check that nullptr settings are ok for decoder.
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
decoder->InitDecode(/*codec_settings=*/nullptr, 1));
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, decoder->Release());
}
INSTANTIATE_TEST_SUITE_P(
TestVp9ImplForPixelFormat,
TestVp9ImplForPixelFormat,
::testing::Values(test::FrameGeneratorInterface::OutputType::kI420,
test::FrameGeneratorInterface::OutputType::kNV12),
[](const auto& info) {
return test::FrameGeneratorInterface::OutputTypeToString(info.param);
});
// Helper function to populate an vpx_image_t instance with dimensions and
// potential image data.
std::function<vpx_image_t*(vpx_image_t*,
vpx_img_fmt_t,
unsigned int,
unsigned int,
unsigned int,
unsigned char* img_data)>
GetWrapImageFunction(vpx_image_t* img) {
return [img](vpx_image_t* /*img*/, vpx_img_fmt_t fmt, unsigned int d_w,
unsigned int d_h, unsigned int /*stride_align*/,
unsigned char* img_data) {
img->fmt = fmt;
img->d_w = d_w;
img->d_h = d_h;
img->img_data = img_data;
return img;
};
}
TEST(Vp9SpeedSettingsTrialsTest, SvcExtraCfgNotPopulatedByDefault) {
test::ExplicitKeyValueConfig trials("");
// Keep a raw pointer for EXPECT calls and the like. Ownership is otherwise
// passed on to LibvpxVp9Encoder.
auto* const vpx = new NiceMock<MockLibvpxInterface>();
LibvpxVp9Encoder encoder(cricket::VideoCodec(),
absl::WrapUnique<LibvpxInterface>(vpx), trials);
VideoCodec settings = DefaultCodecSettings();
// Configure 3 spatial and three temporal ayers.
ConfigureSvc(settings, 3, 3);
vpx_image_t img;
ON_CALL(*vpx, img_wrap).WillByDefault(GetWrapImageFunction(&img));
ON_CALL(*vpx, codec_enc_config_default)
.WillByDefault(DoAll(WithArg<1>([](vpx_codec_enc_cfg_t* cfg) {
memset(cfg, 0, sizeof(vpx_codec_enc_cfg_t));
}),
Return(VPX_CODEC_OK)));
EXPECT_CALL(*vpx,
codec_control(
_, VP9E_SET_SVC_PARAMETERS,
SafeMatcherCast<vpx_svc_extra_cfg_t*>(AllOf(
Field(&vpx_svc_extra_cfg_t::speed_per_layer, Each(0)),
Field(&vpx_svc_extra_cfg_t::loopfilter_ctrl, Each(0))))));
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder.InitEncode(&settings, kSettings));
}
TEST(Vp9SpeedSettingsTrialsTest, NoSvcUsesGlobalSpeedFromTl0InLayerConfig) {
// TL0 speed 8 at >= 480x270, 5 if below that.
test::ExplicitKeyValueConfig trials(
"WebRTC-VP9-PerformanceFlags/"
"use_per_layer_speed,"
"min_pixel_count:0|129600,"
"base_layer_speed:4|8,"
"high_layer_speed:5|9,"
"deblock_mode:1|0/");
// Keep a raw pointer for EXPECT calls and the like. Ownership is otherwise
// passed on to LibvpxVp9Encoder.
auto* const vpx = new NiceMock<MockLibvpxInterface>();
LibvpxVp9Encoder encoder(cricket::VideoCodec(),
absl::WrapUnique<LibvpxInterface>(vpx), trials);
VideoCodec settings = DefaultCodecSettings();
settings.width = 480;
settings.height = 270;
vpx_image_t img;
ON_CALL(*vpx, img_wrap).WillByDefault(GetWrapImageFunction(&img));
ON_CALL(*vpx, codec_enc_config_default)
.WillByDefault(DoAll(WithArg<1>([](vpx_codec_enc_cfg_t* cfg) {
memset(cfg, 0, sizeof(vpx_codec_enc_cfg_t));
}),
Return(VPX_CODEC_OK)));
EXPECT_CALL(*vpx, codec_control(_, _, An<int>())).Times(AnyNumber());
EXPECT_CALL(*vpx, codec_control(_, VP9E_SET_SVC_PARAMETERS,
A<vpx_svc_extra_cfg_t*>()))
.Times(0);
EXPECT_CALL(*vpx, codec_control(_, VP8E_SET_CPUUSED, TypedEq<int>(8)));
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder.InitEncode(&settings, kSettings));
encoder.Release();
settings.width = 352;
settings.height = 216;
EXPECT_CALL(*vpx, codec_control(_, VP8E_SET_CPUUSED, TypedEq<int>(4)));
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder.InitEncode(&settings, kSettings));
}
TEST(Vp9SpeedSettingsTrialsTest,
NoPerLayerFlagUsesGlobalSpeedFromTopLayerInConfig) {
// TL0 speed 8 at >= 480x270, 5 if below that.
test::ExplicitKeyValueConfig trials(
"WebRTC-VP9-PerformanceFlags/"
"min_pixel_count:0|129600,"
"base_layer_speed:4|8,"
"high_layer_speed:5|9,"
"deblock_mode:1|0/");
// Keep a raw pointer for EXPECT calls and the like. Ownership is otherwise
// passed on to LibvpxVp9Encoder.
auto* const vpx = new NiceMock<MockLibvpxInterface>();
LibvpxVp9Encoder encoder(cricket::VideoCodec(),
absl::WrapUnique<LibvpxInterface>(vpx), trials);
VideoCodec settings = DefaultCodecSettings();
settings.width = 480;
settings.height = 270;
ConfigureSvc(settings, 2, 3);
vpx_image_t img;
ON_CALL(*vpx, img_wrap).WillByDefault(GetWrapImageFunction(&img));
ON_CALL(*vpx, codec_enc_config_default)
.WillByDefault(DoAll(WithArg<1>([](vpx_codec_enc_cfg_t* cfg) {
memset(cfg, 0, sizeof(vpx_codec_enc_cfg_t));
}),
Return(VPX_CODEC_OK)));
EXPECT_CALL(*vpx, codec_control(_, _, An<int>())).Times(AnyNumber());
// Speed settings not populated when 'use_per_layer_speed' flag is absent.
EXPECT_CALL(*vpx,
codec_control(
_, VP9E_SET_SVC_PARAMETERS,
SafeMatcherCast<vpx_svc_extra_cfg_t*>(AllOf(
Field(&vpx_svc_extra_cfg_t::speed_per_layer, Each(0)),
Field(&vpx_svc_extra_cfg_t::loopfilter_ctrl, Each(0))))))
.Times(2);
EXPECT_CALL(*vpx, codec_control(_, VP8E_SET_CPUUSED, TypedEq<int>(8)));
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder.InitEncode(&settings, kSettings));
encoder.Release();
settings.width = 476;
settings.height = 268;
settings.spatialLayers[0].width = settings.width / 2;
settings.spatialLayers[0].height = settings.height / 2;
settings.spatialLayers[1].width = settings.width;
settings.spatialLayers[1].height = settings.height;
EXPECT_CALL(*vpx, codec_control(_, VP8E_SET_CPUUSED, TypedEq<int>(4)));
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder.InitEncode(&settings, kSettings));
}
TEST(Vp9SpeedSettingsTrialsTest, PerLayerFlagsWithSvc) {
// Per-temporal and spatial layer speed settings:
// SL0: TL0 = speed 5, TL1/TL2 = speed 8.
// SL1/2: TL0 = speed 7, TL1/TL2 = speed 9.
// Deblocking-mode per spatial layer:
// SL0: mode 1, SL1/2: mode 0.
test::ExplicitKeyValueConfig trials(
"WebRTC-VP9-PerformanceFlags/"
"use_per_layer_speed,"
"min_pixel_count:0|129600,"
"base_layer_speed:5|7,"
"high_layer_speed:8|9,"
"deblock_mode:1|0/");
// Keep a raw pointer for EXPECT calls and the like. Ownership is otherwise
// passed on to LibvpxVp9Encoder.
auto* const vpx = new NiceMock<MockLibvpxInterface>();
LibvpxVp9Encoder encoder(cricket::VideoCodec(),
absl::WrapUnique<LibvpxInterface>(vpx), trials);
VideoCodec settings = DefaultCodecSettings();
const int kNumSpatialLayers = 3;
ConfigureSvc(settings, kNumSpatialLayers, /*num_temporal_layers=*/3);
vpx_image_t img;
// Speed settings per spatial layer, for TL0.
const int kBaseTlSpeed[VPX_MAX_LAYERS] = {5, 7, 7};
// Speed settings per spatial layer, for TL1, TL2.
const int kHighTlSpeed[VPX_MAX_LAYERS] = {8, 9, 9};
// Loopfilter settings are handled within libvpx, so this array is valid for
// both TL0 and higher.
const int kLoopFilter[VPX_MAX_LAYERS] = {1, 0, 0};
ON_CALL(*vpx, img_wrap).WillByDefault(GetWrapImageFunction(&img));
ON_CALL(*vpx, codec_enc_config_default)
.WillByDefault(DoAll(WithArg<1>([](vpx_codec_enc_cfg_t* cfg) {
memset(cfg, 0, sizeof(vpx_codec_enc_cfg_t));
}),
Return(VPX_CODEC_OK)));
EXPECT_CALL(
*vpx, codec_control(_, VP9E_SET_SVC_PARAMETERS,
SafeMatcherCast<vpx_svc_extra_cfg_t*>(
AllOf(Field(&vpx_svc_extra_cfg_t::speed_per_layer,
ElementsAreArray(kBaseTlSpeed)),
Field(&vpx_svc_extra_cfg_t::loopfilter_ctrl,
ElementsAreArray(kLoopFilter))))));
// Capture the callback into the vp9 wrapper.
vpx_codec_priv_output_cx_pkt_cb_pair_t callback_pointer = {};
EXPECT_CALL(*vpx, codec_control(_, VP9E_REGISTER_CX_CALLBACK, A<void*>()))
.WillOnce(WithArg<2>([&](void* cbp) {
callback_pointer =
*reinterpret_cast<vpx_codec_priv_output_cx_pkt_cb_pair_t*>(cbp);
return VPX_CODEC_OK;
}));
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder.InitEncode(&settings, kSettings));
MockEncodedImageCallback callback;
encoder.RegisterEncodeCompleteCallback(&callback);
auto frame_generator = test::CreateSquareFrameGenerator(
kWidth, kHeight, test::FrameGeneratorInterface::OutputType::kI420, 10);
Mock::VerifyAndClearExpectations(vpx);
uint8_t data[1] = {0};
vpx_codec_cx_pkt encoded_data = {};
encoded_data.data.frame.buf = &data;
encoded_data.data.frame.sz = 1;
const auto kImageOk =
EncodedImageCallback::Result(EncodedImageCallback::Result::OK);
int spatial_id = 0;
int temporal_id = 0;
EXPECT_CALL(*vpx,
codec_control(_, VP9E_SET_SVC_LAYER_ID, A<vpx_svc_layer_id_t*>()))
.Times(AnyNumber());
EXPECT_CALL(*vpx,
codec_control(_, VP9E_GET_SVC_LAYER_ID, A<vpx_svc_layer_id_t*>()))
.WillRepeatedly(WithArg<2>([&](vpx_svc_layer_id_t* layer_id) {
layer_id->spatial_layer_id = spatial_id;
layer_id->temporal_layer_id = temporal_id;
return VPX_CODEC_OK;
}));
vpx_svc_ref_frame_config_t stored_refs = {};
ON_CALL(*vpx, codec_control(_, VP9E_SET_SVC_REF_FRAME_CONFIG,
A<vpx_svc_ref_frame_config_t*>()))
.WillByDefault(
DoAll(SaveArgPointee<2>(&stored_refs), Return(VPX_CODEC_OK)));
ON_CALL(*vpx, codec_control(_, VP9E_GET_SVC_REF_FRAME_CONFIG,
A<vpx_svc_ref_frame_config_t*>()))
.WillByDefault(
DoAll(SetArgPointee<2>(ByRef(stored_refs)), Return(VPX_CODEC_OK)));
// First frame is keyframe.
encoded_data.data.frame.flags = VPX_FRAME_IS_KEY;
// Default 3-layer temporal pattern: 0-2-1-2, then repeat and do two more.
for (int ti : {0, 2, 1, 2, 0, 2}) {
EXPECT_CALL(*vpx, codec_encode).WillOnce(Return(VPX_CODEC_OK));
// No update expected if flags haven't changed, and they change we we move
// between base temporal layer and non-base temporal layer.
if ((ti > 0) != (temporal_id > 0)) {
EXPECT_CALL(*vpx, codec_control(
_, VP9E_SET_SVC_PARAMETERS,
SafeMatcherCast<vpx_svc_extra_cfg_t*>(AllOf(
Field(&vpx_svc_extra_cfg_t::speed_per_layer,
ElementsAreArray(ti == 0 ? kBaseTlSpeed
: kHighTlSpeed)),
Field(&vpx_svc_extra_cfg_t::loopfilter_ctrl,
ElementsAreArray(kLoopFilter))))));
} else {
EXPECT_CALL(*vpx, codec_control(_, VP9E_SET_SVC_PARAMETERS,
A<vpx_svc_extra_cfg_t*>()))
.Times(0);
}
VideoFrame frame =
VideoFrame::Builder()
.set_video_frame_buffer(frame_generator->NextFrame().buffer)
.build();
encoder.Encode(frame, nullptr);
temporal_id = ti;
for (int si = 0; si < kNumSpatialLayers; ++si) {
spatial_id = si;
EXPECT_CALL(callback, OnEncodedImage).WillOnce(Return(kImageOk));
callback_pointer.output_cx_pkt(&encoded_data, callback_pointer.user_priv);
}
encoded_data.data.frame.flags = 0; // Following frames are delta frames.
}
}
} // namespace webrtc
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