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/*
* Copyright (c) 2017 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/test/video_codec_unittest.h"
#include <cstddef>
#include <cstdint>
#include <memory>
#include <optional>
#include <utility>
#include <vector>
#include "api/test/create_frame_generator.h"
#include "api/test/frame_generator_interface.h"
#include "api/units/time_delta.h"
#include "api/video/encoded_image.h"
#include "api/video/video_codec_type.h"
#include "api/video/video_frame.h"
#include "api/video_codecs/video_codec.h"
#include "api/video_codecs/video_decoder.h"
#include "api/video_codecs/video_encoder.h"
#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
#include "modules/video_coding/include/video_error_codes.h"
#include "rtc_base/checks.h"
#include "rtc_base/synchronization/mutex.h"
#include "test/gtest.h"
#include "test/video_codec_settings.h"
static constexpr webrtc::TimeDelta kEncodeTimeout =
webrtc::TimeDelta::Millis(100);
static constexpr webrtc::TimeDelta kDecodeTimeout =
webrtc::TimeDelta::Millis(25);
// Set bitrate to get higher quality.
static const int kStartBitrate = 300;
static const int kMaxBitrate = 4000;
static const int kWidth = 176; // Width of the input image.
static const int kHeight = 144; // Height of the input image.
static const int kMaxFramerate = 30; // Arbitrary value.
namespace webrtc {
namespace {
const VideoEncoder::Capabilities kCapabilities(false);
}
EncodedImageCallback::Result
VideoCodecUnitTest::FakeEncodeCompleteCallback::OnEncodedImage(
const EncodedImage& frame,
const CodecSpecificInfo* codec_specific_info) {
MutexLock lock(&test_->encoded_frame_section_);
test_->encoded_frames_.push_back(frame);
RTC_DCHECK(codec_specific_info);
test_->codec_specific_infos_.push_back(*codec_specific_info);
if (!test_->wait_for_encoded_frames_threshold_) {
test_->encoded_frame_event_.Set();
return Result(Result::OK);
}
if (test_->encoded_frames_.size() ==
test_->wait_for_encoded_frames_threshold_) {
test_->wait_for_encoded_frames_threshold_ = 1;
test_->encoded_frame_event_.Set();
}
return Result(Result::OK);
}
void VideoCodecUnitTest::FakeDecodeCompleteCallback::Decoded(
VideoFrame& frame,
std::optional<int32_t> /* decode_time_ms */,
std::optional<uint8_t> qp) {
MutexLock lock(&test_->decoded_frame_section_);
test_->decoded_frame_.emplace(frame);
test_->decoded_qp_ = qp;
test_->decoded_frame_event_.Set();
}
void VideoCodecUnitTest::SetUp() {
test::CodecSettings(kVideoCodecVP8, &codec_settings_);
codec_settings_.startBitrate = kStartBitrate;
codec_settings_.maxBitrate = kMaxBitrate;
codec_settings_.maxFramerate = kMaxFramerate;
codec_settings_.width = kWidth;
codec_settings_.height = kHeight;
ModifyCodecSettings(&codec_settings_);
input_frame_generator_ = test::CreateSquareFrameGenerator(
codec_settings_.width, codec_settings_.height,
test::FrameGeneratorInterface::OutputType::kI420, std::optional<int>());
encoder_ = CreateEncoder();
decoder_ = CreateDecoder();
encoder_->RegisterEncodeCompleteCallback(&encode_complete_callback_);
decoder_->RegisterDecodeCompleteCallback(&decode_complete_callback_);
EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
encoder_->InitEncode(
&codec_settings_,
VideoEncoder::Settings(kCapabilities, 1 /* number of cores */,
0 /* max payload size (unused) */)));
VideoDecoder::Settings decoder_settings;
decoder_settings.set_codec_type(codec_settings_.codecType);
decoder_settings.set_max_render_resolution(
{codec_settings_.width, codec_settings_.height});
EXPECT_TRUE(decoder_->Configure(decoder_settings));
}
void VideoCodecUnitTest::ModifyCodecSettings(VideoCodec* /* codec_settings */) {
}
VideoFrame VideoCodecUnitTest::NextInputFrame() {
test::FrameGeneratorInterface::VideoFrameData frame_data =
input_frame_generator_->NextFrame();
VideoFrame input_frame = VideoFrame::Builder()
.set_video_frame_buffer(frame_data.buffer)
.set_update_rect(frame_data.update_rect)
.build();
const uint32_t timestamp =
last_input_frame_timestamp_ +
kVideoPayloadTypeFrequency / codec_settings_.maxFramerate;
input_frame.set_rtp_timestamp(timestamp);
input_frame.set_timestamp_us(timestamp * (1000 / 90));
last_input_frame_timestamp_ = timestamp;
return input_frame;
}
bool VideoCodecUnitTest::WaitForEncodedFrame(
EncodedImage* frame,
CodecSpecificInfo* codec_specific_info) {
std::vector<EncodedImage> frames;
std::vector<CodecSpecificInfo> codec_specific_infos;
if (!WaitForEncodedFrames(&frames, &codec_specific_infos))
return false;
EXPECT_EQ(frames.size(), static_cast<size_t>(1));
EXPECT_EQ(frames.size(), codec_specific_infos.size());
*frame = frames[0];
*codec_specific_info = codec_specific_infos[0];
return true;
}
void VideoCodecUnitTest::SetWaitForEncodedFramesThreshold(size_t num_frames) {
MutexLock lock(&encoded_frame_section_);
wait_for_encoded_frames_threshold_ = num_frames;
}
bool VideoCodecUnitTest::WaitForEncodedFrames(
std::vector<EncodedImage>* frames,
std::vector<CodecSpecificInfo>* codec_specific_info) {
EXPECT_TRUE(encoded_frame_event_.Wait(kEncodeTimeout))
<< "Timed out while waiting for encoded frame.";
// This becomes unsafe if there are multiple threads waiting for frames.
MutexLock lock(&encoded_frame_section_);
EXPECT_FALSE(encoded_frames_.empty());
EXPECT_FALSE(codec_specific_infos_.empty());
EXPECT_EQ(encoded_frames_.size(), codec_specific_infos_.size());
if (!encoded_frames_.empty()) {
*frames = encoded_frames_;
encoded_frames_.clear();
RTC_DCHECK(!codec_specific_infos_.empty());
*codec_specific_info = codec_specific_infos_;
codec_specific_infos_.clear();
return true;
} else {
return false;
}
}
bool VideoCodecUnitTest::WaitForDecodedFrame(std::unique_ptr<VideoFrame>* frame,
std::optional<uint8_t>* qp) {
bool ret = decoded_frame_event_.Wait(kDecodeTimeout);
EXPECT_TRUE(ret) << "Timed out while waiting for a decoded frame.";
// This becomes unsafe if there are multiple threads waiting for frames.
MutexLock lock(&decoded_frame_section_);
EXPECT_TRUE(decoded_frame_);
if (decoded_frame_) {
frame->reset(new VideoFrame(std::move(*decoded_frame_)));
*qp = decoded_qp_;
decoded_frame_.reset();
return true;
} else {
return false;
}
}
size_t VideoCodecUnitTest::GetNumEncodedFrames() {
MutexLock lock(&encoded_frame_section_);
return encoded_frames_.size();
}
} // namespace webrtc
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