chromium/media/gpu/h264_rate_controller_unittest.cc

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "media/gpu/h264_rate_controller.h"

#include "base/logging.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace media {
namespace {
constexpr uint32_t kCommonAvgBitrate = …;   // bits per second
constexpr uint32_t kCommonPeakBitrate = …;  // bits per second
constexpr int kCommonFps = …;
constexpr int kCommonFpsMax = …;
constexpr uint32_t kCommonFrameHeight = …;
constexpr uint32_t kCommonFrameWidth = …;
constexpr size_t kCommonHRDBufferSize = …;  // bytes
constexpr base::TimeDelta kCommonGopMaxDuration = …;
constexpr uint32_t kCommonQpMax = …;
constexpr uint32_t kCommonQpMin = …;
constexpr size_t kLayer0Index = …;
constexpr size_t kLayer1Index = …;

// Test H264RateControllerTest executes various operations on the H264 Rate
// Controller component. A test sequence of predefined frames is filled into the
// rate controller and the controller state is compared with the expected
// values.
class H264RateControllerTest : public testing::Test { … };

// Test Cases

// The test runs a predefined sequence of frame sizes and checks the Rate
// Controller status after running the sequence.
TEST_F(H264RateControllerTest, RunH264RateController1TemporalLayerTest) { … }

TEST_F(H264RateControllerTest, RunH264RateController2TemporalLayersTest) { … }

TEST_F(H264RateControllerTest,
       RunH264RateController2TemporalLayersFixedDeltaQPTest) { … }

TEST_F(H264RateControllerTest, RunH264RateControllerFramerateMeanTest) { … }

TEST_F(H264RateControllerTest, RunH264RateControllerSetBufferParametersTest) { … }

// The test verifies the following conditions:
// 1. The first intra encoded frame fills up the buffer more than 50%. This is
//    handled in FinishIntraFrame() method.
// 2. QP adjustment in EstimateIntraFrameQP() method when the previous encoded
//    frame is an intra frame.
// 3. Modifying QP value in EstimateIntraFrameQP() method when the buffer is
//    full.
TEST_F(H264RateControllerTest, RunH264RateControllerIntraEncodedFrameTest) { … }
}  // namespace

}  // namespace media