blob: 2150a767a308bfe00ea77c748e5951a47bb9750b [file] [log] [blame]
/*
* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "api/video_codecs/video_encoder_software_fallback_wrapper.h"
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <string>
#include <vector>
#include "absl/types/optional.h"
#include "api/fec_controller_override.h"
#include "api/scoped_refptr.h"
#include "api/test/mock_video_encoder.h"
#include "api/video/encoded_image.h"
#include "api/video/i420_buffer.h"
#include "api/video/video_bitrate_allocation.h"
#include "api/video/video_frame.h"
#include "api/video/video_frame_buffer.h"
#include "api/video/video_rotation.h"
#include "api/video_codecs/video_codec.h"
#include "api/video_codecs/video_encoder.h"
#include "modules/video_coding/codecs/vp8/include/vp8.h"
#include "modules/video_coding/include/video_codec_interface.h"
#include "modules/video_coding/include/video_error_codes.h"
#include "modules/video_coding/utility/simulcast_rate_allocator.h"
#include "rtc_base/fake_clock.h"
#include "test/fake_texture_frame.h"
#include "test/field_trial.h"
#include "test/gmock.h"
#include "test/gtest.h"
namespace webrtc {
using ::testing::_;
using ::testing::Return;
namespace {
const int kWidth = 320;
const int kHeight = 240;
const int kNumCores = 2;
const uint32_t kFramerate = 30;
const size_t kMaxPayloadSize = 800;
const int kLowThreshold = 10;
const int kHighThreshold = 20;
const VideoEncoder::Capabilities kCapabilities(false);
const VideoEncoder::Settings kSettings(kCapabilities,
kNumCores,
kMaxPayloadSize);
VideoEncoder::EncoderInfo GetEncoderInfoWithTrustedRateController(
bool trusted_rate_controller) {
VideoEncoder::EncoderInfo info;
info.has_trusted_rate_controller = trusted_rate_controller;
return info;
}
VideoEncoder::EncoderInfo GetEncoderInfoWithHardwareAccelerated(
bool hardware_accelerated) {
VideoEncoder::EncoderInfo info;
info.is_hardware_accelerated = hardware_accelerated;
return info;
}
class FakeEncodedImageCallback : public EncodedImageCallback {
public:
Result OnEncodedImage(const EncodedImage& encoded_image,
const CodecSpecificInfo* codec_specific_info) override {
++callback_count_;
return Result(Result::OK, callback_count_);
}
int callback_count_ = 0;
};
} // namespace
class VideoEncoderSoftwareFallbackWrapperTestBase : public ::testing::Test {
protected:
VideoEncoderSoftwareFallbackWrapperTestBase(
const std::string& field_trials,
std::unique_ptr<VideoEncoder> sw_encoder)
: override_field_trials_(field_trials),
fake_encoder_(new CountingFakeEncoder()),
wrapper_initialized_(false),
fallback_wrapper_(CreateVideoEncoderSoftwareFallbackWrapper(
std::move(sw_encoder),
std::unique_ptr<VideoEncoder>(fake_encoder_),
false)) {}
class CountingFakeEncoder : public VideoEncoder {
public:
void SetFecControllerOverride(
FecControllerOverride* fec_controller_override) override {
// Ignored.
}
int32_t InitEncode(const VideoCodec* codec_settings,
const VideoEncoder::Settings& settings) override {
++init_encode_count_;
return init_encode_return_code_;
}
int32_t Encode(const VideoFrame& frame,
const std::vector<VideoFrameType>* frame_types) override {
++encode_count_;
last_video_frame_ = frame;
if (encode_complete_callback_ &&
encode_return_code_ == WEBRTC_VIDEO_CODEC_OK) {
encode_complete_callback_->OnEncodedImage(EncodedImage(), nullptr);
}
return encode_return_code_;
}
int32_t RegisterEncodeCompleteCallback(
EncodedImageCallback* callback) override {
encode_complete_callback_ = callback;
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t Release() override {
++release_count_;
return WEBRTC_VIDEO_CODEC_OK;
}
void SetRates(const RateControlParameters& parameters) override {}
EncoderInfo GetEncoderInfo() const override {
++supports_native_handle_count_;
EncoderInfo info;
info.scaling_settings = ScalingSettings(kLowThreshold, kHighThreshold);
info.supports_native_handle = supports_native_handle_;
info.implementation_name = implementation_name_;
if (is_qp_trusted_)
info.is_qp_trusted = is_qp_trusted_;
return info;
}
int init_encode_count_ = 0;
int32_t init_encode_return_code_ = WEBRTC_VIDEO_CODEC_OK;
int32_t encode_return_code_ = WEBRTC_VIDEO_CODEC_OK;
int encode_count_ = 0;
EncodedImageCallback* encode_complete_callback_ = nullptr;
int release_count_ = 0;
mutable int supports_native_handle_count_ = 0;
bool supports_native_handle_ = false;
bool is_qp_trusted_ = false;
std::string implementation_name_ = "fake-encoder";
absl::optional<VideoFrame> last_video_frame_;
};
void InitEncode();
void UtilizeFallbackEncoder();
void FallbackFromEncodeRequest();
void EncodeFrame();
void EncodeFrame(int expected_ret);
void CheckLastEncoderName(const char* expected_name) {
EXPECT_EQ(expected_name,
fallback_wrapper_->GetEncoderInfo().implementation_name);
}
test::ScopedFieldTrials override_field_trials_;
FakeEncodedImageCallback callback_;
// `fake_encoder_` is owned and released by `fallback_wrapper_`.
CountingFakeEncoder* fake_encoder_;
CountingFakeEncoder* fake_sw_encoder_;
bool wrapper_initialized_;
std::unique_ptr<VideoEncoder> fallback_wrapper_;
VideoCodec codec_ = {};
std::unique_ptr<VideoFrame> frame_;
std::unique_ptr<SimulcastRateAllocator> rate_allocator_;
};
class VideoEncoderSoftwareFallbackWrapperTest
: public VideoEncoderSoftwareFallbackWrapperTestBase {
protected:
VideoEncoderSoftwareFallbackWrapperTest()
: VideoEncoderSoftwareFallbackWrapperTest(new CountingFakeEncoder()) {}
explicit VideoEncoderSoftwareFallbackWrapperTest(
CountingFakeEncoder* fake_sw_encoder)
: VideoEncoderSoftwareFallbackWrapperTestBase(
"",
std::unique_ptr<VideoEncoder>(fake_sw_encoder)),
fake_sw_encoder_(fake_sw_encoder) {
fake_sw_encoder_->implementation_name_ = "fake_sw_encoder";
}
CountingFakeEncoder* fake_sw_encoder_;
};
void VideoEncoderSoftwareFallbackWrapperTestBase::EncodeFrame() {
EncodeFrame(WEBRTC_VIDEO_CODEC_OK);
}
void VideoEncoderSoftwareFallbackWrapperTestBase::EncodeFrame(
int expected_ret) {
rtc::scoped_refptr<I420Buffer> buffer =
I420Buffer::Create(codec_.width, codec_.height);
I420Buffer::SetBlack(buffer);
std::vector<VideoFrameType> types(1, VideoFrameType::kVideoFrameKey);
frame_ =
std::make_unique<VideoFrame>(VideoFrame::Builder()
.set_video_frame_buffer(buffer)
.set_rotation(webrtc::kVideoRotation_0)
.set_timestamp_us(0)
.build());
EXPECT_EQ(expected_ret, fallback_wrapper_->Encode(*frame_, &types));
}
void VideoEncoderSoftwareFallbackWrapperTestBase::InitEncode() {
if (!wrapper_initialized_) {
fallback_wrapper_->RegisterEncodeCompleteCallback(&callback_);
EXPECT_EQ(&callback_, fake_encoder_->encode_complete_callback_);
}
// Register fake encoder as main.
codec_.codecType = kVideoCodecVP8;
codec_.maxFramerate = kFramerate;
codec_.width = kWidth;
codec_.height = kHeight;
codec_.VP8()->numberOfTemporalLayers = 1;
rate_allocator_.reset(new SimulcastRateAllocator(codec_));
if (wrapper_initialized_) {
fallback_wrapper_->Release();
}
fake_encoder_->init_encode_return_code_ = WEBRTC_VIDEO_CODEC_OK;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
fallback_wrapper_->InitEncode(&codec_, kSettings));
if (!wrapper_initialized_) {
fallback_wrapper_->SetRates(VideoEncoder::RateControlParameters(
rate_allocator_->Allocate(
VideoBitrateAllocationParameters(300000, kFramerate)),
kFramerate));
}
wrapper_initialized_ = true;
}
void VideoEncoderSoftwareFallbackWrapperTestBase::UtilizeFallbackEncoder() {
if (!wrapper_initialized_) {
fallback_wrapper_->RegisterEncodeCompleteCallback(&callback_);
EXPECT_EQ(&callback_, fake_encoder_->encode_complete_callback_);
}
// Register with failing fake encoder. Should succeed with VP8 fallback.
codec_.codecType = kVideoCodecVP8;
codec_.maxFramerate = kFramerate;
codec_.width = kWidth;
codec_.height = kHeight;
codec_.VP8()->numberOfTemporalLayers = 1;
rate_allocator_.reset(new SimulcastRateAllocator(codec_));
if (wrapper_initialized_) {
fallback_wrapper_->Release();
}
fake_encoder_->init_encode_return_code_ = WEBRTC_VIDEO_CODEC_ERROR;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
fallback_wrapper_->InitEncode(&codec_, kSettings));
fallback_wrapper_->SetRates(VideoEncoder::RateControlParameters(
rate_allocator_->Allocate(
VideoBitrateAllocationParameters(300000, kFramerate)),
kFramerate));
int callback_count = callback_.callback_count_;
int encode_count = fake_encoder_->encode_count_;
EncodeFrame();
EXPECT_EQ(encode_count, fake_encoder_->encode_count_);
EXPECT_EQ(callback_count + 1, callback_.callback_count_);
}
void VideoEncoderSoftwareFallbackWrapperTestBase::FallbackFromEncodeRequest() {
fallback_wrapper_->RegisterEncodeCompleteCallback(&callback_);
codec_.codecType = kVideoCodecVP8;
codec_.maxFramerate = kFramerate;
codec_.width = kWidth;
codec_.height = kHeight;
codec_.VP8()->numberOfTemporalLayers = 1;
rate_allocator_.reset(new SimulcastRateAllocator(codec_));
if (wrapper_initialized_) {
fallback_wrapper_->Release();
}
fallback_wrapper_->InitEncode(&codec_, kSettings);
fallback_wrapper_->SetRates(VideoEncoder::RateControlParameters(
rate_allocator_->Allocate(
VideoBitrateAllocationParameters(300000, kFramerate)),
kFramerate));
EXPECT_EQ(1, fake_encoder_->init_encode_count_);
// Have the non-fallback encoder request a software fallback.
fake_encoder_->encode_return_code_ = WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE;
int callback_count = callback_.callback_count_;
int encode_count = fake_encoder_->encode_count_;
EncodeFrame();
// Single encode request, which returned failure.
EXPECT_EQ(encode_count + 1, fake_encoder_->encode_count_);
EXPECT_EQ(callback_count + 1, callback_.callback_count_);
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest, InitializesEncoder) {
VideoCodec codec = {};
fallback_wrapper_->InitEncode(&codec, kSettings);
EXPECT_EQ(1, fake_encoder_->init_encode_count_);
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest, EncodeRequestsFallback) {
FallbackFromEncodeRequest();
// After fallback, further encodes shouldn't hit the fake encoder.
int encode_count = fake_encoder_->encode_count_;
EncodeFrame();
EXPECT_EQ(encode_count, fake_encoder_->encode_count_);
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest, CanUtilizeFallbackEncoder) {
UtilizeFallbackEncoder();
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, fallback_wrapper_->Release());
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest,
InternalEncoderReleasedDuringFallback) {
EXPECT_EQ(0, fake_encoder_->init_encode_count_);
EXPECT_EQ(0, fake_encoder_->release_count_);
InitEncode();
EXPECT_EQ(1, fake_encoder_->init_encode_count_);
EXPECT_EQ(0, fake_encoder_->release_count_);
UtilizeFallbackEncoder();
// One successful InitEncode(), one failed.
EXPECT_EQ(2, fake_encoder_->init_encode_count_);
EXPECT_EQ(1, fake_encoder_->release_count_);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, fallback_wrapper_->Release());
// No extra release when the fallback is released.
EXPECT_EQ(2, fake_encoder_->init_encode_count_);
EXPECT_EQ(1, fake_encoder_->release_count_);
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest,
InternalEncoderNotEncodingDuringFallback) {
UtilizeFallbackEncoder();
int encode_count = fake_encoder_->encode_count_;
EncodeFrame();
EXPECT_EQ(encode_count, fake_encoder_->encode_count_);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, fallback_wrapper_->Release());
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest,
CanRegisterCallbackWhileUsingFallbackEncoder) {
InitEncode();
EXPECT_EQ(&callback_, fake_encoder_->encode_complete_callback_);
UtilizeFallbackEncoder();
// Registering an encode-complete callback will now pass to the fallback
// instead of the main encoder.
FakeEncodedImageCallback callback2;
fallback_wrapper_->RegisterEncodeCompleteCallback(&callback2);
EXPECT_EQ(&callback_, fake_encoder_->encode_complete_callback_);
// Encoding a frame using the fallback should arrive at the new callback.
std::vector<VideoFrameType> types(1, VideoFrameType::kVideoFrameKey);
frame_->set_timestamp(frame_->timestamp() + 1000);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, fallback_wrapper_->Encode(*frame_, &types));
EXPECT_EQ(callback2.callback_count_, 1);
// Re-initialize to use the main encoder, the new callback should be in use.
InitEncode();
EXPECT_EQ(&callback2, fake_encoder_->encode_complete_callback_);
frame_->set_timestamp(frame_->timestamp() + 2000);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, fallback_wrapper_->Encode(*frame_, &types));
EXPECT_EQ(callback2.callback_count_, 2);
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest,
SupportsNativeHandleForwardedWithoutFallback) {
fallback_wrapper_->GetEncoderInfo();
EXPECT_EQ(1, fake_encoder_->supports_native_handle_count_);
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest,
SupportsNativeHandleNotForwardedDuringFallback) {
// Fake encoder signals support for native handle, default (libvpx) does not.
fake_encoder_->supports_native_handle_ = true;
EXPECT_TRUE(fallback_wrapper_->GetEncoderInfo().supports_native_handle);
UtilizeFallbackEncoder();
EXPECT_FALSE(fallback_wrapper_->GetEncoderInfo().supports_native_handle);
// Both times, both encoders are queried.
EXPECT_EQ(2, fake_encoder_->supports_native_handle_count_);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, fallback_wrapper_->Release());
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest, ReportsImplementationName) {
codec_.width = kWidth;
codec_.height = kHeight;
fallback_wrapper_->RegisterEncodeCompleteCallback(&callback_);
fallback_wrapper_->InitEncode(&codec_, kSettings);
EncodeFrame();
CheckLastEncoderName("fake-encoder");
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest,
IsQpTrustedNotForwardedDuringFallback) {
// Fake encoder signals trusted QP, default (libvpx) does not.
fake_encoder_->is_qp_trusted_ = true;
EXPECT_TRUE(fake_encoder_->GetEncoderInfo().is_qp_trusted.value_or(false));
UtilizeFallbackEncoder();
EXPECT_FALSE(fallback_wrapper_->GetEncoderInfo().is_qp_trusted.has_value());
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, fallback_wrapper_->Release());
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest,
ReportsFallbackImplementationName) {
UtilizeFallbackEncoder();
CheckLastEncoderName(fake_sw_encoder_->implementation_name_.c_str());
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest,
OnEncodeFallbackNativeFrameScaledIfFallbackDoesNotSupportNativeFrames) {
fake_encoder_->supports_native_handle_ = true;
fake_sw_encoder_->supports_native_handle_ = false;
InitEncode();
int width = codec_.width * 2;
int height = codec_.height * 2;
VideoFrame native_frame = test::FakeNativeBuffer::CreateFrame(
width, height, 0, 0, VideoRotation::kVideoRotation_0);
std::vector<VideoFrameType> types(1, VideoFrameType::kVideoFrameKey);
fake_encoder_->encode_return_code_ = WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
fallback_wrapper_->Encode(native_frame, &types));
EXPECT_EQ(1, fake_sw_encoder_->encode_count_);
ASSERT_TRUE(fake_sw_encoder_->last_video_frame_.has_value());
EXPECT_NE(VideoFrameBuffer::Type::kNative,
fake_sw_encoder_->last_video_frame_->video_frame_buffer()->type());
EXPECT_EQ(codec_.width, fake_sw_encoder_->last_video_frame_->width());
EXPECT_EQ(codec_.height, fake_sw_encoder_->last_video_frame_->height());
}
TEST_F(VideoEncoderSoftwareFallbackWrapperTest,
OnEncodeFallbackNativeFrameForwardedToFallbackIfItSupportsNativeFrames) {
fake_encoder_->supports_native_handle_ = true;
fake_sw_encoder_->supports_native_handle_ = true;
InitEncode();
int width = codec_.width * 2;
int height = codec_.height * 2;
VideoFrame native_frame = test::FakeNativeBuffer::CreateFrame(
width, height, 0, 0, VideoRotation::kVideoRotation_0);
std::vector<VideoFrameType> types(1, VideoFrameType::kVideoFrameKey);
fake_encoder_->encode_return_code_ = WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE;
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
fallback_wrapper_->Encode(native_frame, &types));
EXPECT_EQ(1, fake_sw_encoder_->encode_count_);
ASSERT_TRUE(fake_sw_encoder_->last_video_frame_.has_value());
EXPECT_EQ(VideoFrameBuffer::Type::kNative,
fake_sw_encoder_->last_video_frame_->video_frame_buffer()->type());
EXPECT_EQ(native_frame.width(), fake_sw_encoder_->last_video_frame_->width());
EXPECT_EQ(native_frame.height(),
fake_sw_encoder_->last_video_frame_->height());
}
namespace {
const int kBitrateKbps = 200;
const int kMinPixelsPerFrame = 1;
const char kFieldTrial[] = "WebRTC-VP8-Forced-Fallback-Encoder-v2";
} // namespace
class ForcedFallbackTest : public VideoEncoderSoftwareFallbackWrapperTestBase {
public:
explicit ForcedFallbackTest(const std::string& field_trials)
: VideoEncoderSoftwareFallbackWrapperTestBase(field_trials,
VP8Encoder::Create()) {}
~ForcedFallbackTest() override {}
protected:
void SetUp() override {
clock_.SetTime(Timestamp::Micros(1234));
ConfigureVp8Codec();
}
void TearDown() override {
if (wrapper_initialized_) {
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, fallback_wrapper_->Release());
}
}
void ConfigureVp8Codec() {
codec_.codecType = kVideoCodecVP8;
codec_.maxFramerate = kFramerate;
codec_.width = kWidth;
codec_.height = kHeight;
codec_.VP8()->numberOfTemporalLayers = 1;
codec_.VP8()->automaticResizeOn = true;
codec_.VP8()->frameDroppingOn = true;
rate_allocator_.reset(new SimulcastRateAllocator(codec_));
}
void InitEncode(int width, int height) {
codec_.width = width;
codec_.height = height;
if (wrapper_initialized_) {
fallback_wrapper_->Release();
}
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
fallback_wrapper_->InitEncode(&codec_, kSettings));
fallback_wrapper_->RegisterEncodeCompleteCallback(&callback_);
wrapper_initialized_ = true;
SetRateAllocation(kBitrateKbps);
}
void SetRateAllocation(uint32_t bitrate_kbps) {
fallback_wrapper_->SetRates(VideoEncoder::RateControlParameters(
rate_allocator_->Allocate(
VideoBitrateAllocationParameters(bitrate_kbps * 1000, kFramerate)),
kFramerate));
}
void EncodeFrameAndVerifyLastName(const char* expected_name) {
EncodeFrameAndVerifyLastName(expected_name, WEBRTC_VIDEO_CODEC_OK);
}
void EncodeFrameAndVerifyLastName(const char* expected_name,
int expected_ret) {
EncodeFrame(expected_ret);
CheckLastEncoderName(expected_name);
}
rtc::ScopedFakeClock clock_;
};
class ForcedFallbackTestEnabled : public ForcedFallbackTest {
public:
ForcedFallbackTestEnabled()
: ForcedFallbackTest(std::string(kFieldTrial) + "/Enabled-" +
std::to_string(kMinPixelsPerFrame) + "," +
std::to_string(kWidth * kHeight) + ",30000/") {}
};
class ForcedFallbackTestDisabled : public ForcedFallbackTest {
public:
ForcedFallbackTestDisabled()
: ForcedFallbackTest(std::string(kFieldTrial) + "/Disabled/") {}
};
TEST_F(ForcedFallbackTestDisabled, NoFallbackWithoutFieldTrial) {
// Resolution above max threshold.
InitEncode(kWidth + 1, kHeight);
EXPECT_EQ(1, fake_encoder_->init_encode_count_);
EncodeFrameAndVerifyLastName("fake-encoder");
// Resolution at max threshold.
InitEncode(kWidth, kHeight);
EncodeFrameAndVerifyLastName("fake-encoder");
}
TEST_F(ForcedFallbackTestEnabled, FallbackIfAtMaxResolutionLimit) {
// Resolution above max threshold.
InitEncode(kWidth + 1, kHeight);
EXPECT_EQ(1, fake_encoder_->init_encode_count_);
EncodeFrameAndVerifyLastName("fake-encoder");
// Resolution at max threshold.
InitEncode(kWidth, kHeight);
EncodeFrameAndVerifyLastName("libvpx");
}
TEST_F(ForcedFallbackTestEnabled, FallbackIsKeptWhenInitEncodeIsCalled) {
// Resolution above max threshold.
InitEncode(kWidth + 1, kHeight);
EXPECT_EQ(1, fake_encoder_->init_encode_count_);
EncodeFrameAndVerifyLastName("fake-encoder");
// Resolution at max threshold.
InitEncode(kWidth, kHeight);
EncodeFrameAndVerifyLastName("libvpx");
// Re-initialize encoder, still expect fallback.
InitEncode(kWidth / 2, kHeight / 2);
EXPECT_EQ(1, fake_encoder_->init_encode_count_); // No change.
EncodeFrameAndVerifyLastName("libvpx");
}
TEST_F(ForcedFallbackTestEnabled, FallbackIsEndedWhenResolutionIsTooLarge) {
// Resolution above max threshold.
InitEncode(kWidth + 1, kHeight);
EXPECT_EQ(1, fake_encoder_->init_encode_count_);
EncodeFrameAndVerifyLastName("fake-encoder");
// Resolution at max threshold.
InitEncode(kWidth, kHeight);
EncodeFrameAndVerifyLastName("libvpx");
// Re-initialize encoder with a larger resolution, expect no fallback.
InitEncode(kWidth + 1, kHeight);
EXPECT_EQ(2, fake_encoder_->init_encode_count_);
EncodeFrameAndVerifyLastName("fake-encoder");
}
TEST_F(ForcedFallbackTestEnabled, FallbackIsEndedForNonValidSettings) {
// Resolution at max threshold.
InitEncode(kWidth, kHeight);
EncodeFrameAndVerifyLastName("libvpx");
// Re-initialize encoder with invalid setting, expect no fallback.
codec_.numberOfSimulcastStreams = 2;
InitEncode(kWidth, kHeight);
EXPECT_EQ(1, fake_encoder_->init_encode_count_);
EncodeFrameAndVerifyLastName("fake-encoder");
// Re-initialize encoder with valid setting.
codec_.numberOfSimulcastStreams = 1;
InitEncode(kWidth, kHeight);
EXPECT_EQ(1, fake_encoder_->init_encode_count_);
EncodeFrameAndVerifyLastName("libvpx");
}
TEST_F(ForcedFallbackTestEnabled, MultipleStartEndFallback) {
const int kNumRuns = 5;
for (int i = 1; i <= kNumRuns; ++i) {
// Resolution at max threshold.
InitEncode(kWidth, kHeight);
EncodeFrameAndVerifyLastName("libvpx");
// Resolution above max threshold.
InitEncode(kWidth + 1, kHeight);
EXPECT_EQ(i, fake_encoder_->init_encode_count_);
EncodeFrameAndVerifyLastName("fake-encoder");
}
}
TEST_F(ForcedFallbackTestDisabled, GetScaleSettings) {
// Resolution above max threshold.
InitEncode(kWidth + 1, kHeight);
EXPECT_EQ(1, fake_encoder_->init_encode_count_);
EncodeFrameAndVerifyLastName("fake-encoder");
// Default min pixels per frame should be used.
const auto settings = fallback_wrapper_->GetEncoderInfo().scaling_settings;
EXPECT_TRUE(settings.thresholds.has_value());
EXPECT_EQ(kDefaultMinPixelsPerFrame, settings.min_pixels_per_frame);
}
TEST_F(ForcedFallbackTestEnabled, GetScaleSettingsWithNoFallback) {
// Resolution above max threshold.
InitEncode(kWidth + 1, kHeight);
EncodeFrameAndVerifyLastName("fake-encoder");
// Configured min pixels per frame should be used.
const auto settings = fallback_wrapper_->GetEncoderInfo().scaling_settings;
EXPECT_EQ(kMinPixelsPerFrame, settings.min_pixels_per_frame);
ASSERT_TRUE(settings.thresholds);
EXPECT_EQ(kLowThreshold, settings.thresholds->low);
EXPECT_EQ(kHighThreshold, settings.thresholds->high);
}
TEST_F(ForcedFallbackTestEnabled, GetScaleSettingsWithFallback) {
// Resolution at max threshold.
InitEncode(kWidth, kHeight);
EncodeFrameAndVerifyLastName("libvpx");
// Configured min pixels per frame should be used.
const auto settings = fallback_wrapper_->GetEncoderInfo().scaling_settings;
EXPECT_TRUE(settings.thresholds.has_value());
EXPECT_EQ(kMinPixelsPerFrame, settings.min_pixels_per_frame);
}
TEST_F(ForcedFallbackTestEnabled, ScalingDisabledIfResizeOff) {
// Resolution at max threshold.
codec_.VP8()->automaticResizeOn = false;
InitEncode(kWidth, kHeight);
EncodeFrameAndVerifyLastName("libvpx");
// Should be disabled for automatic resize off.
const auto settings = fallback_wrapper_->GetEncoderInfo().scaling_settings;
EXPECT_FALSE(settings.thresholds.has_value());
}
TEST(SoftwareFallbackEncoderTest, BothRateControllersNotTrusted) {
auto* sw_encoder = new ::testing::NiceMock<MockVideoEncoder>();
auto* hw_encoder = new ::testing::NiceMock<MockVideoEncoder>();
EXPECT_CALL(*sw_encoder, GetEncoderInfo())
.WillRepeatedly(Return(GetEncoderInfoWithTrustedRateController(false)));
EXPECT_CALL(*hw_encoder, GetEncoderInfo())
.WillRepeatedly(Return(GetEncoderInfoWithTrustedRateController(false)));
std::unique_ptr<VideoEncoder> wrapper =
CreateVideoEncoderSoftwareFallbackWrapper(
std::unique_ptr<VideoEncoder>(sw_encoder),
std::unique_ptr<VideoEncoder>(hw_encoder));
EXPECT_FALSE(wrapper->GetEncoderInfo().has_trusted_rate_controller);
}
TEST(SoftwareFallbackEncoderTest, SwRateControllerTrusted) {
auto* sw_encoder = new ::testing::NiceMock<MockVideoEncoder>();
auto* hw_encoder = new ::testing::NiceMock<MockVideoEncoder>();
EXPECT_CALL(*sw_encoder, GetEncoderInfo())
.WillRepeatedly(Return(GetEncoderInfoWithTrustedRateController(true)));
EXPECT_CALL(*hw_encoder, GetEncoderInfo())
.WillRepeatedly(Return(GetEncoderInfoWithTrustedRateController(false)));
std::unique_ptr<VideoEncoder> wrapper =
CreateVideoEncoderSoftwareFallbackWrapper(
std::unique_ptr<VideoEncoder>(sw_encoder),
std::unique_ptr<VideoEncoder>(hw_encoder));
EXPECT_FALSE(wrapper->GetEncoderInfo().has_trusted_rate_controller);
}
TEST(SoftwareFallbackEncoderTest, HwRateControllerTrusted) {
auto* sw_encoder = new ::testing::NiceMock<MockVideoEncoder>();
auto* hw_encoder = new ::testing::NiceMock<MockVideoEncoder>();
EXPECT_CALL(*sw_encoder, GetEncoderInfo())
.WillRepeatedly(Return(GetEncoderInfoWithTrustedRateController(false)));
EXPECT_CALL(*hw_encoder, GetEncoderInfo())
.WillRepeatedly(Return(GetEncoderInfoWithTrustedRateController(true)));
std::unique_ptr<VideoEncoder> wrapper =
CreateVideoEncoderSoftwareFallbackWrapper(
std::unique_ptr<VideoEncoder>(sw_encoder),
std::unique_ptr<VideoEncoder>(hw_encoder));
EXPECT_TRUE(wrapper->GetEncoderInfo().has_trusted_rate_controller);
VideoCodec codec_ = {};
codec_.width = 100;
codec_.height = 100;
wrapper->InitEncode(&codec_, kSettings);
// Trigger fallback to software.
EXPECT_CALL(*hw_encoder, Encode)
.WillOnce(Return(WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE));
VideoFrame frame = VideoFrame::Builder()
.set_video_frame_buffer(I420Buffer::Create(100, 100))
.build();
wrapper->Encode(frame, nullptr);
EXPECT_FALSE(wrapper->GetEncoderInfo().has_trusted_rate_controller);
}
TEST(SoftwareFallbackEncoderTest, BothRateControllersTrusted) {
auto* sw_encoder = new ::testing::NiceMock<MockVideoEncoder>();
auto* hw_encoder = new ::testing::NiceMock<MockVideoEncoder>();
EXPECT_CALL(*sw_encoder, GetEncoderInfo())
.WillRepeatedly(Return(GetEncoderInfoWithTrustedRateController(true)));
EXPECT_CALL(*hw_encoder, GetEncoderInfo())
.WillRepeatedly(Return(GetEncoderInfoWithTrustedRateController(true)));
std::unique_ptr<VideoEncoder> wrapper =
CreateVideoEncoderSoftwareFallbackWrapper(
std::unique_ptr<VideoEncoder>(sw_encoder),
std::unique_ptr<VideoEncoder>(hw_encoder));
EXPECT_TRUE(wrapper->GetEncoderInfo().has_trusted_rate_controller);
}
TEST(SoftwareFallbackEncoderTest, ReportsHardwareAccelerated) {
auto* sw_encoder = new ::testing::NiceMock<MockVideoEncoder>();
auto* hw_encoder = new ::testing::NiceMock<MockVideoEncoder>();
EXPECT_CALL(*sw_encoder, GetEncoderInfo())
.WillRepeatedly(Return(GetEncoderInfoWithHardwareAccelerated(false)));
EXPECT_CALL(*hw_encoder, GetEncoderInfo())
.WillRepeatedly(Return(GetEncoderInfoWithHardwareAccelerated(true)));
std::unique_ptr<VideoEncoder> wrapper =
CreateVideoEncoderSoftwareFallbackWrapper(
std::unique_ptr<VideoEncoder>(sw_encoder),
std::unique_ptr<VideoEncoder>(hw_encoder));
EXPECT_TRUE(wrapper->GetEncoderInfo().is_hardware_accelerated);
VideoCodec codec_ = {};
codec_.width = 100;
codec_.height = 100;
wrapper->InitEncode(&codec_, kSettings);
// Trigger fallback to software.
EXPECT_CALL(*hw_encoder, Encode)
.WillOnce(Return(WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE));
VideoFrame frame = VideoFrame::Builder()
.set_video_frame_buffer(I420Buffer::Create(100, 100))
.build();
wrapper->Encode(frame, nullptr);
EXPECT_FALSE(wrapper->GetEncoderInfo().is_hardware_accelerated);
}
class PreferTemporalLayersFallbackTest : public ::testing::Test {
public:
PreferTemporalLayersFallbackTest() {}
void SetUp() override {
sw_ = new ::testing::NiceMock<MockVideoEncoder>();
sw_info_.implementation_name = "sw";
EXPECT_CALL(*sw_, GetEncoderInfo).WillRepeatedly([&]() {
return sw_info_;
});
EXPECT_CALL(*sw_, InitEncode(_, _, _))
.WillRepeatedly(Return(WEBRTC_VIDEO_CODEC_OK));
hw_ = new ::testing::NiceMock<MockVideoEncoder>();
hw_info_.implementation_name = "hw";
EXPECT_CALL(*hw_, GetEncoderInfo()).WillRepeatedly([&]() {
return hw_info_;
});
EXPECT_CALL(*hw_, InitEncode(_, _, _))
.WillRepeatedly(Return(WEBRTC_VIDEO_CODEC_OK));
wrapper_ = CreateVideoEncoderSoftwareFallbackWrapper(
std::unique_ptr<VideoEncoder>(sw_), std::unique_ptr<VideoEncoder>(hw_),
/*prefer_temporal_support=*/true);
codec_settings.codecType = kVideoCodecVP8;
codec_settings.maxFramerate = kFramerate;
codec_settings.width = kWidth;
codec_settings.height = kHeight;
codec_settings.numberOfSimulcastStreams = 1;
codec_settings.VP8()->numberOfTemporalLayers = 1;
}
protected:
void SetSupportsLayers(VideoEncoder::EncoderInfo* info, bool tl_enabled) {
int num_layers = 1;
if (tl_enabled) {
num_layers = codec_settings.VP8()->numberOfTemporalLayers;
}
SetNumLayers(info, num_layers);
}
void SetNumLayers(VideoEncoder::EncoderInfo* info, int num_layers) {
info->fps_allocation[0].clear();
for (int i = 0; i < num_layers; ++i) {
info->fps_allocation[0].push_back(
VideoEncoder::EncoderInfo::kMaxFramerateFraction >>
(num_layers - i - 1));
}
}
VideoCodec codec_settings;
::testing::NiceMock<MockVideoEncoder>* sw_;
::testing::NiceMock<MockVideoEncoder>* hw_;
VideoEncoder::EncoderInfo sw_info_;
VideoEncoder::EncoderInfo hw_info_;
std::unique_ptr<VideoEncoder> wrapper_;
};
TEST_F(PreferTemporalLayersFallbackTest, UsesMainWhenLayersNotUsed) {
codec_settings.VP8()->numberOfTemporalLayers = 1;
SetSupportsLayers(&hw_info_, true);
SetSupportsLayers(&sw_info_, true);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
wrapper_->InitEncode(&codec_settings, kSettings));
EXPECT_EQ(wrapper_->GetEncoderInfo().implementation_name, "hw");
}
TEST_F(PreferTemporalLayersFallbackTest, UsesMainWhenLayersSupported) {
codec_settings.VP8()->numberOfTemporalLayers = 2;
SetSupportsLayers(&hw_info_, true);
SetSupportsLayers(&sw_info_, true);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
wrapper_->InitEncode(&codec_settings, kSettings));
EXPECT_EQ(wrapper_->GetEncoderInfo().implementation_name, "hw");
}
TEST_F(PreferTemporalLayersFallbackTest,
UsesFallbackWhenLayersNotSupportedOnMain) {
codec_settings.VP8()->numberOfTemporalLayers = 2;
SetSupportsLayers(&hw_info_, false);
SetSupportsLayers(&sw_info_, true);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
wrapper_->InitEncode(&codec_settings, kSettings));
EXPECT_EQ(wrapper_->GetEncoderInfo().implementation_name, "sw");
}
TEST_F(PreferTemporalLayersFallbackTest, UsesMainWhenNeitherSupportsTemporal) {
codec_settings.VP8()->numberOfTemporalLayers = 2;
SetSupportsLayers(&hw_info_, false);
SetSupportsLayers(&sw_info_, false);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
wrapper_->InitEncode(&codec_settings, kSettings));
EXPECT_EQ(wrapper_->GetEncoderInfo().implementation_name, "hw");
}
TEST_F(PreferTemporalLayersFallbackTest, UsesFallbackWhenLayersAreUndefined) {
codec_settings.VP8()->numberOfTemporalLayers = 2;
SetNumLayers(&hw_info_, 1);
SetNumLayers(&sw_info_, 0);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
wrapper_->InitEncode(&codec_settings, kSettings));
EXPECT_EQ(wrapper_->GetEncoderInfo().implementation_name, "sw");
}
TEST_F(PreferTemporalLayersFallbackTest, PrimesEncoderOnSwitch) {
codec_settings.VP8()->numberOfTemporalLayers = 2;
// Both support temporal layers, will use main one.
SetSupportsLayers(&hw_info_, true);
SetSupportsLayers(&sw_info_, true);
// On first InitEncode most params have no state and will not be
// called to update.
EXPECT_CALL(*hw_, RegisterEncodeCompleteCallback).Times(0);
EXPECT_CALL(*sw_, RegisterEncodeCompleteCallback).Times(0);
EXPECT_CALL(*hw_, SetFecControllerOverride).Times(0);
EXPECT_CALL(*sw_, SetFecControllerOverride).Times(0);
EXPECT_CALL(*hw_, SetRates).Times(0);
EXPECT_CALL(*hw_, SetRates).Times(0);
EXPECT_CALL(*hw_, OnPacketLossRateUpdate).Times(0);
EXPECT_CALL(*sw_, OnPacketLossRateUpdate).Times(0);
EXPECT_CALL(*hw_, OnRttUpdate).Times(0);
EXPECT_CALL(*sw_, OnRttUpdate).Times(0);
EXPECT_CALL(*hw_, OnLossNotification).Times(0);
EXPECT_CALL(*sw_, OnLossNotification).Times(0);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
wrapper_->InitEncode(&codec_settings, kSettings));
EXPECT_EQ(wrapper_->GetEncoderInfo().implementation_name, "hw");
FakeEncodedImageCallback callback1;
class DummyFecControllerOverride : public FecControllerOverride {
public:
void SetFecAllowed(bool fec_allowed) override {}
};
DummyFecControllerOverride fec_controller_override1;
VideoEncoder::RateControlParameters rate_params1;
float packet_loss1 = 0.1;
int64_t rtt1 = 1;
VideoEncoder::LossNotification lntf1;
EXPECT_CALL(*hw_, RegisterEncodeCompleteCallback(&callback1));
EXPECT_CALL(*sw_, RegisterEncodeCompleteCallback).Times(0);
wrapper_->RegisterEncodeCompleteCallback(&callback1);
EXPECT_CALL(*hw_, SetFecControllerOverride(&fec_controller_override1));
EXPECT_CALL(*sw_, SetFecControllerOverride).Times(1);
wrapper_->SetFecControllerOverride(&fec_controller_override1);
EXPECT_CALL(*hw_, SetRates(rate_params1));
EXPECT_CALL(*sw_, SetRates).Times(0);
wrapper_->SetRates(rate_params1);
EXPECT_CALL(*hw_, OnPacketLossRateUpdate(packet_loss1));
EXPECT_CALL(*sw_, OnPacketLossRateUpdate).Times(0);
wrapper_->OnPacketLossRateUpdate(packet_loss1);
EXPECT_CALL(*hw_, OnRttUpdate(rtt1));
EXPECT_CALL(*sw_, OnRttUpdate).Times(0);
wrapper_->OnRttUpdate(rtt1);
EXPECT_CALL(*hw_, OnLossNotification).Times(1);
EXPECT_CALL(*sw_, OnLossNotification).Times(0);
wrapper_->OnLossNotification(lntf1);
// Release and re-init, with fallback to software. This should trigger
// the software encoder to be primed with the current state.
wrapper_->Release();
EXPECT_CALL(*sw_, RegisterEncodeCompleteCallback(&callback1));
EXPECT_CALL(*hw_, RegisterEncodeCompleteCallback).Times(0);
EXPECT_CALL(*sw_, SetFecControllerOverride).Times(0);
EXPECT_CALL(*hw_, SetFecControllerOverride).Times(0);
// Rate control parameters are cleared on InitEncode.
EXPECT_CALL(*sw_, SetRates).Times(0);
EXPECT_CALL(*hw_, SetRates).Times(0);
EXPECT_CALL(*sw_, OnPacketLossRateUpdate(packet_loss1));
EXPECT_CALL(*hw_, OnPacketLossRateUpdate).Times(0);
EXPECT_CALL(*sw_, OnRttUpdate(rtt1));
EXPECT_CALL(*hw_, OnRttUpdate).Times(0);
EXPECT_CALL(*sw_, OnLossNotification).Times(1);
EXPECT_CALL(*hw_, OnLossNotification).Times(0);
SetSupportsLayers(&hw_info_, false);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
wrapper_->InitEncode(&codec_settings, kSettings));
EXPECT_EQ(wrapper_->GetEncoderInfo().implementation_name, "sw");
// Update with all-new params for the software encoder.
FakeEncodedImageCallback callback2;
DummyFecControllerOverride fec_controller_override2;
VideoEncoder::RateControlParameters rate_params2;
float packet_loss2 = 0.2;
int64_t rtt2 = 2;
VideoEncoder::LossNotification lntf2;
EXPECT_CALL(*sw_, RegisterEncodeCompleteCallback(&callback2));
EXPECT_CALL(*hw_, RegisterEncodeCompleteCallback).Times(0);
wrapper_->RegisterEncodeCompleteCallback(&callback2);
EXPECT_CALL(*sw_, SetFecControllerOverride(&fec_controller_override2));
EXPECT_CALL(*hw_, SetFecControllerOverride).Times(1);
wrapper_->SetFecControllerOverride(&fec_controller_override2);
EXPECT_CALL(*sw_, SetRates(rate_params2));
EXPECT_CALL(*hw_, SetRates).Times(0);
wrapper_->SetRates(rate_params2);
EXPECT_CALL(*sw_, OnPacketLossRateUpdate(packet_loss2));
EXPECT_CALL(*hw_, OnPacketLossRateUpdate).Times(0);
wrapper_->OnPacketLossRateUpdate(packet_loss2);
EXPECT_CALL(*sw_, OnRttUpdate(rtt2));
EXPECT_CALL(*hw_, OnRttUpdate).Times(0);
wrapper_->OnRttUpdate(rtt2);
EXPECT_CALL(*sw_, OnLossNotification).Times(1);
EXPECT_CALL(*hw_, OnLossNotification).Times(0);
wrapper_->OnLossNotification(lntf2);
// Release and re-init, back to main encoder. This should trigger
// the main encoder to be primed with the current state.
wrapper_->Release();
EXPECT_CALL(*hw_, RegisterEncodeCompleteCallback(&callback2));
EXPECT_CALL(*sw_, RegisterEncodeCompleteCallback).Times(0);
EXPECT_CALL(*hw_, SetFecControllerOverride).Times(0);
EXPECT_CALL(*sw_, SetFecControllerOverride).Times(0);
// Rate control parameters are cleared on InitEncode.
EXPECT_CALL(*sw_, SetRates).Times(0);
EXPECT_CALL(*hw_, SetRates).Times(0);
EXPECT_CALL(*hw_, OnPacketLossRateUpdate(packet_loss2));
EXPECT_CALL(*sw_, OnPacketLossRateUpdate).Times(0);
EXPECT_CALL(*hw_, OnRttUpdate(rtt2));
EXPECT_CALL(*sw_, OnRttUpdate).Times(0);
EXPECT_CALL(*hw_, OnLossNotification).Times(1);
EXPECT_CALL(*sw_, OnLossNotification).Times(0);
SetSupportsLayers(&hw_info_, true);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
wrapper_->InitEncode(&codec_settings, kSettings));
EXPECT_EQ(wrapper_->GetEncoderInfo().implementation_name, "hw");
}
} // namespace webrtc