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/*
* Copyright (c) 2020 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 "modules/video_coding/codecs/av1/libaom_av1_encoder.h"
#include <memory>
#include <vector>
#include "absl/types/optional.h"
#include "api/video_codecs/video_codec.h"
#include "api/video_codecs/video_encoder.h"
#include "modules/video_coding/codecs/test/encoded_video_frame_producer.h"
#include "modules/video_coding/include/video_error_codes.h"
#include "test/gmock.h"
#include "test/gtest.h"
namespace webrtc {
namespace {
using ::testing::ElementsAre;
using ::testing::Field;
using ::testing::IsEmpty;
using ::testing::SizeIs;
VideoCodec DefaultCodecSettings() {
VideoCodec codec_settings;
codec_settings.width = 320;
codec_settings.height = 180;
codec_settings.maxFramerate = 30;
codec_settings.maxBitrate = 1000;
codec_settings.qpMax = 63;
return codec_settings;
}
VideoEncoder::Settings DefaultEncoderSettings() {
return VideoEncoder::Settings(
VideoEncoder::Capabilities(/*loss_notification=*/false),
/*number_of_cores=*/1, /*max_payload_size=*/1200);
}
TEST(LibaomAv1EncoderTest, CanCreate) {
std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
EXPECT_TRUE(encoder);
}
TEST(LibaomAv1EncoderTest, InitAndRelease) {
std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
ASSERT_TRUE(encoder);
VideoCodec codec_settings = DefaultCodecSettings();
EXPECT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
WEBRTC_VIDEO_CODEC_OK);
EXPECT_EQ(encoder->Release(), WEBRTC_VIDEO_CODEC_OK);
}
TEST(LibaomAv1EncoderTest, NoBitrateOnTopLayerRefecltedInActiveDecodeTargets) {
// Configure encoder with 2 temporal layers.
std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
VideoCodec codec_settings = DefaultCodecSettings();
codec_settings.SetScalabilityMode("L1T2");
ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
WEBRTC_VIDEO_CODEC_OK);
VideoEncoder::RateControlParameters rate_parameters;
rate_parameters.framerate_fps = 30;
rate_parameters.bitrate.SetBitrate(0, /*temporal_index=*/0, 300'000);
rate_parameters.bitrate.SetBitrate(0, /*temporal_index=*/1, 0);
encoder->SetRates(rate_parameters);
std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
EncodedVideoFrameProducer(*encoder).SetNumInputFrames(1).Encode();
ASSERT_THAT(encoded_frames, SizeIs(1));
ASSERT_NE(encoded_frames[0].codec_specific_info.generic_frame_info,
absl::nullopt);
// Assuming L1T2 structure uses 1st decode target for T0 and 2nd decode target
// for T0+T1 frames, expect only 1st decode target is active.
EXPECT_EQ(encoded_frames[0]
.codec_specific_info.generic_frame_info->active_decode_targets,
0b01);
}
TEST(LibaomAv1EncoderTest, SetsEndOfPictureForLastFrameInTemporalUnit) {
std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
VideoCodec codec_settings = DefaultCodecSettings();
// Configure encoder with 3 spatial layers.
codec_settings.SetScalabilityMode("L3T1");
ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
WEBRTC_VIDEO_CODEC_OK);
std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
EncodedVideoFrameProducer(*encoder).SetNumInputFrames(2).Encode();
ASSERT_THAT(encoded_frames, SizeIs(6));
EXPECT_FALSE(encoded_frames[0].codec_specific_info.end_of_picture);
EXPECT_FALSE(encoded_frames[1].codec_specific_info.end_of_picture);
EXPECT_TRUE(encoded_frames[2].codec_specific_info.end_of_picture);
EXPECT_FALSE(encoded_frames[3].codec_specific_info.end_of_picture);
EXPECT_FALSE(encoded_frames[4].codec_specific_info.end_of_picture);
EXPECT_TRUE(encoded_frames[5].codec_specific_info.end_of_picture);
}
TEST(LibaomAv1EncoderTest, CheckOddDimensionsWithSpatialLayers) {
std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
VideoCodec codec_settings = DefaultCodecSettings();
// Configure encoder with 3 spatial layers.
codec_settings.SetScalabilityMode("L3T1");
// Odd width and height values should not make encoder crash.
codec_settings.width = 623;
codec_settings.height = 405;
ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
WEBRTC_VIDEO_CODEC_OK);
EncodedVideoFrameProducer evfp(*encoder);
evfp.SetResolution(RenderResolution{623, 405});
std::vector<EncodedVideoFrameProducer::EncodedFrame> encoded_frames =
evfp.SetNumInputFrames(2).Encode();
ASSERT_THAT(encoded_frames, SizeIs(6));
}
TEST(LibaomAv1EncoderTest, EncoderInfoProvidesFpsAllocation) {
std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
VideoCodec codec_settings = DefaultCodecSettings();
codec_settings.SetScalabilityMode("L3T3");
codec_settings.maxFramerate = 60;
ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
WEBRTC_VIDEO_CODEC_OK);
const auto& encoder_info = encoder->GetEncoderInfo();
EXPECT_THAT(encoder_info.fps_allocation[0], ElementsAre(15, 30, 60));
EXPECT_THAT(encoder_info.fps_allocation[1], ElementsAre(15, 30, 60));
EXPECT_THAT(encoder_info.fps_allocation[2], ElementsAre(15, 30, 60));
EXPECT_THAT(encoder_info.fps_allocation[3], IsEmpty());
}
TEST(LibaomAv1EncoderTest, PopulatesEncodedFrameSize) {
std::unique_ptr<VideoEncoder> encoder = CreateLibaomAv1Encoder();
VideoCodec codec_settings = DefaultCodecSettings();
ASSERT_GT(codec_settings.width, 4);
// Configure encoder with 3 spatial layers.
codec_settings.SetScalabilityMode("L3T1");
ASSERT_EQ(encoder->InitEncode(&codec_settings, DefaultEncoderSettings()),
WEBRTC_VIDEO_CODEC_OK);
using Frame = EncodedVideoFrameProducer::EncodedFrame;
std::vector<Frame> encoded_frames =
EncodedVideoFrameProducer(*encoder).SetNumInputFrames(1).Encode();
EXPECT_THAT(
encoded_frames,
ElementsAre(
Field(&Frame::encoded_image,
AllOf(Field(&EncodedImage::_encodedWidth,
codec_settings.width / 4),
Field(&EncodedImage::_encodedHeight,
codec_settings.height / 4))),
Field(&Frame::encoded_image,
AllOf(Field(&EncodedImage::_encodedWidth,
codec_settings.width / 2),
Field(&EncodedImage::_encodedHeight,
codec_settings.height / 2))),
Field(&Frame::encoded_image,
AllOf(Field(&EncodedImage::_encodedWidth, codec_settings.width),
Field(&EncodedImage::_encodedHeight,
codec_settings.height)))));
}
} // namespace
} // namespace webrtc
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