chromium/third_party/blink/renderer/platform/peerconnection/rtc_encoded_video_stream_transformer_test.cc

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/platform/peerconnection/rtc_encoded_video_stream_transformer.h"

#include <stdint.h>

#include <memory>
#include <vector>

#include "base/memory/raw_ptr.h"
#include "base/memory/scoped_refptr.h"
#include "base/task/single_thread_task_runner.h"
#include "base/task/thread_pool.h"
#include "base/test/task_environment.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/public/platform/scheduler/test/renderer_scheduler_test_support.h"
#include "third_party/blink/renderer/platform/peerconnection/rtc_scoped_refptr_cross_thread_copier.h"
#include "third_party/blink/renderer/platform/scheduler/public/post_cross_thread_task.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_copier_std.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_functional.h"
#include "third_party/blink/renderer/platform/wtf/functional.h"
#include "third_party/webrtc/api/array_view.h"
#include "third_party/webrtc/api/frame_transformer_interface.h"
#include "third_party/webrtc/api/test/mock_transformable_video_frame.h"
#include "third_party/webrtc/api/units/time_delta.h"
#include "third_party/webrtc/rtc_base/ref_counted_object.h"

_;
NiceMock;
Return;
SaveArg;

namespace blink {

namespace {

const uint32_t kSSRC = …;
const uint32_t kNonexistentSSRC = …;

class MockWebRtcTransformedFrameCallback
    : public webrtc::TransformedFrameCallback { … };

class MockTransformerCallbackHolder { … };

class MockMetronome : public webrtc::Metronome { … };

std::unique_ptr<webrtc::MockTransformableVideoFrame> CreateMockFrame() { … }

}  // namespace

// Parameterized by bool whether to suply a metronome or not.
class RTCEncodedVideoStreamTransformerTest
    : public testing::TestWithParam<bool> { … };

INSTANTIATE_TEST_SUITE_P(…);

TEST_P(RTCEncodedVideoStreamTransformerTest,
       TransformerForwardsFrameToTransformerCallback) { … }

TEST_P(RTCEncodedVideoStreamTransformerTest, TransformerForwardsFrameToWebRTC) { … }

TEST_P(RTCEncodedVideoStreamTransformerTest, IgnoresSsrcForSinglecast) { … }

TEST_P(RTCEncodedVideoStreamTransformerTest, ShortCircuitingPropagated) { … }

TEST_P(RTCEncodedVideoStreamTransformerTest,
       ShortCircuitingSetOnLateRegisteredCallback) { … }

TEST_P(RTCEncodedVideoStreamTransformerTest, WaitsForMetronomeTick) { … }

TEST_P(RTCEncodedVideoStreamTransformerTest,
       FramesBufferedBeforeShortcircuiting) { … }

TEST_P(RTCEncodedVideoStreamTransformerTest,
       FrameArrivingAfterShortcircuitingIsPassedBack) { … }

TEST_P(RTCEncodedVideoStreamTransformerTest,
       FramesBufferedBeforeSettingTransform) { … }

}  // namespace blink