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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/frame_dependencies_calculator.h"
#include "common_video/generic_frame_descriptor/generic_frame_info.h"
#include "test/gmock.h"
#include "test/gtest.h"
namespace webrtc {
namespace {
using ::testing::ElementsAre;
using ::testing::IsEmpty;
using ::testing::UnorderedElementsAre;
constexpr CodecBufferUsage ReferenceAndUpdate(int id) {
return CodecBufferUsage(id, /*referenced=*/true, /*updated=*/true);
}
constexpr CodecBufferUsage Reference(int id) {
return CodecBufferUsage(id, /*referenced=*/true, /*updated=*/false);
}
constexpr CodecBufferUsage Update(int id) {
return CodecBufferUsage(id, /*referenced=*/false, /*updated=*/true);
}
TEST(FrameDependenciesCalculatorTest, SingleLayer) {
CodecBufferUsage pattern[] = {ReferenceAndUpdate(0)};
FrameDependenciesCalculator calculator;
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/1, pattern), IsEmpty());
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/3, pattern),
ElementsAre(1));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/6, pattern),
ElementsAre(3));
}
TEST(FrameDependenciesCalculatorTest, TwoTemporalLayers) {
// Shortened 4-frame pattern:
// T1: 2---4 6---8 ...
// / / / /
// T0: 1---3---5---7 ...
CodecBufferUsage pattern0[] = {ReferenceAndUpdate(0)};
CodecBufferUsage pattern1[] = {Reference(0), Update(1)};
CodecBufferUsage pattern2[] = {ReferenceAndUpdate(0)};
CodecBufferUsage pattern3[] = {Reference(0), Reference(1)};
FrameDependenciesCalculator calculator;
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/1, pattern0), IsEmpty());
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/2, pattern1),
ElementsAre(1));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/3, pattern2),
ElementsAre(1));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/4, pattern3),
UnorderedElementsAre(2, 3));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/5, pattern0),
ElementsAre(3));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/6, pattern1),
ElementsAre(5));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/7, pattern2),
ElementsAre(5));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/8, pattern3),
UnorderedElementsAre(6, 7));
}
TEST(FrameDependenciesCalculatorTest, ThreeTemporalLayers4FramePattern) {
// T2: 2---4 6---8 ...
// / / / /
// T1: | 3 | 7 ...
// /_/ /_/
// T0: 1-------5----- ...
CodecBufferUsage pattern0[] = {ReferenceAndUpdate(0)};
CodecBufferUsage pattern1[] = {Reference(0), Update(2)};
CodecBufferUsage pattern2[] = {Reference(0), Update(1)};
CodecBufferUsage pattern3[] = {Reference(0), Reference(1), Reference(2)};
FrameDependenciesCalculator calculator;
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/1, pattern0), IsEmpty());
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/2, pattern1),
ElementsAre(1));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/3, pattern2),
ElementsAre(1));
// Note that frame#4 references buffer#0 that is updated by frame#1,
// yet there is no direct dependency from frame#4 to frame#1.
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/4, pattern3),
UnorderedElementsAre(2, 3));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/5, pattern0),
ElementsAre(1));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/6, pattern1),
ElementsAre(5));
}
TEST(FrameDependenciesCalculatorTest, SimulcastWith2Layers) {
// S1: 2---4---6- ...
//
// S0: 1---3---5- ...
CodecBufferUsage pattern0[] = {ReferenceAndUpdate(0)};
CodecBufferUsage pattern1[] = {ReferenceAndUpdate(1)};
FrameDependenciesCalculator calculator;
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/1, pattern0), IsEmpty());
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/2, pattern1), IsEmpty());
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/3, pattern0),
ElementsAre(1));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/4, pattern1),
ElementsAre(2));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/5, pattern0),
ElementsAre(3));
EXPECT_THAT(calculator.FromBuffersUsage(/*frame_id=*/6, pattern1),
ElementsAre(4));
}
} // namespace
} // namespace webrtc
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