blob: c92630f0b8f6e207807a75f84991fb9dc19af41a [file] [log] [blame]
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include <cstdlib>
#include <vector>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/macros.h"
#include "base/synchronization/condition_variable.h"
#include "base/synchronization/lock.h"
#include "base/time/time.h"
#include "media/cast/cast_config.h"
#include "media/cast/receiver/video_decoder.h"
#include "media/cast/sender/sender_encoded_frame.h"
#include "media/cast/sender/vp8_encoder.h"
#include "media/cast/test/utility/default_config.h"
#include "media/cast/test/utility/standalone_cast_environment.h"
#include "media/cast/test/utility/video_utility.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
namespace cast {
namespace {
const int kStartingWidth = 360;
const int kStartingHeight = 240;
const int kFrameRate = 10;
VideoSenderConfig GetVideoSenderConfigForTest() {
VideoSenderConfig config = GetDefaultVideoSenderConfig();
config.max_frame_rate = kFrameRate;
return config;
}
} // namespace
class VideoDecoderTest : public ::testing::TestWithParam<Codec> {
public:
VideoDecoderTest()
: cast_environment_(new StandaloneCastEnvironment()),
vp8_encoder_(GetVideoSenderConfigForTest()),
cond_(&lock_) {
vp8_encoder_.Initialize();
}
virtual ~VideoDecoderTest() {
// Make sure all threads have stopped before the environment goes away.
cast_environment_->Shutdown();
}
protected:
void SetUp() final {
video_decoder_.reset(new VideoDecoder(cast_environment_, GetParam()));
CHECK_EQ(STATUS_INITIALIZED, video_decoder_->InitializationResult());
next_frame_size_ = gfx::Size(kStartingWidth, kStartingHeight);
next_frame_timestamp_ = base::TimeDelta();
last_frame_id_ = 0;
seen_a_decoded_frame_ = false;
total_video_frames_feed_in_ = 0;
total_video_frames_decoded_ = 0;
}
void SetNextFrameSize(const gfx::Size& size) {
next_frame_size_ = size;
}
// Called from the unit test thread to create another EncodedFrame and push it
// into the decoding pipeline.
void FeedMoreVideo(int num_dropped_frames) {
DCHECK(!cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
// Prepare a simulated VideoFrame to feed into the VideoEncoder.
const scoped_refptr<VideoFrame> video_frame = VideoFrame::CreateFrame(
PIXEL_FORMAT_YV12, next_frame_size_, gfx::Rect(next_frame_size_),
next_frame_size_, next_frame_timestamp_);
const base::TimeTicks reference_time =
base::TimeTicks::UnixEpoch() + next_frame_timestamp_;
next_frame_timestamp_ += base::TimeDelta::FromSeconds(1) / kFrameRate;
PopulateVideoFrame(video_frame.get(), 0);
// Encode |frame| into |encoded_frame->data|.
scoped_ptr<SenderEncodedFrame> encoded_frame(new SenderEncodedFrame());
// Test only supports VP8, currently.
CHECK_EQ(CODEC_VIDEO_VP8, GetParam());
vp8_encoder_.Encode(video_frame, reference_time, encoded_frame.get());
// Rewrite frame IDs for testing purposes.
encoded_frame->frame_id = last_frame_id_ + 1 + num_dropped_frames;
if (encoded_frame->dependency == EncodedFrame::KEY)
encoded_frame->referenced_frame_id = encoded_frame->frame_id;
else
encoded_frame->referenced_frame_id = encoded_frame->frame_id - 1;
last_frame_id_ = encoded_frame->frame_id;
ASSERT_EQ(reference_time, encoded_frame->reference_time);
++total_video_frames_feed_in_;
// Post a task to decode the encoded frame.
cast_environment_->PostTask(
CastEnvironment::MAIN,
FROM_HERE,
base::Bind(&VideoDecoder::DecodeFrame,
base::Unretained(video_decoder_.get()),
base::Passed(&encoded_frame),
base::Bind(&VideoDecoderTest::OnDecodedFrame,
base::Unretained(this),
video_frame,
num_dropped_frames == 0)));
}
// Blocks the caller until all video that has been feed in has been decoded.
void WaitForAllVideoToBeDecoded() {
DCHECK(!cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
base::AutoLock auto_lock(lock_);
while (total_video_frames_decoded_ < total_video_frames_feed_in_)
cond_.Wait();
EXPECT_EQ(total_video_frames_feed_in_, total_video_frames_decoded_);
}
private:
// Called by |vp8_decoder_| to deliver each frame of decoded video.
void OnDecodedFrame(const scoped_refptr<VideoFrame>& expected_video_frame,
bool should_be_continuous,
const scoped_refptr<VideoFrame>& video_frame,
bool is_continuous) {
DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
// A NULL |video_frame| indicates a decode error, which we don't expect.
ASSERT_TRUE(video_frame.get());
// Did the decoder detect whether frames were dropped?
EXPECT_EQ(should_be_continuous, is_continuous);
// Does the video data seem to be intact?
EXPECT_EQ(expected_video_frame->coded_size().width(),
video_frame->coded_size().width());
EXPECT_EQ(expected_video_frame->coded_size().height(),
video_frame->coded_size().height());
EXPECT_LT(40.0, I420PSNR(expected_video_frame, video_frame));
// TODO(miu): Once we start using VideoFrame::timestamp_, check that here.
// Signal the main test thread that more video was decoded.
base::AutoLock auto_lock(lock_);
++total_video_frames_decoded_;
cond_.Signal();
}
const scoped_refptr<StandaloneCastEnvironment> cast_environment_;
scoped_ptr<VideoDecoder> video_decoder_;
gfx::Size next_frame_size_;
base::TimeDelta next_frame_timestamp_;
uint32_t last_frame_id_;
bool seen_a_decoded_frame_;
Vp8Encoder vp8_encoder_;
// Unlike |total_video_frames_decoded_|, this is only read/written on a single
// thread.
int total_video_frames_feed_in_;
base::Lock lock_;
base::ConditionVariable cond_;
int total_video_frames_decoded_; // Protected by |lock_|.
DISALLOW_COPY_AND_ASSIGN(VideoDecoderTest);
};
TEST_P(VideoDecoderTest, DecodesFrames) {
const int kNumFrames = 3;
for (int i = 0; i < kNumFrames; ++i)
FeedMoreVideo(0);
WaitForAllVideoToBeDecoded();
}
TEST_P(VideoDecoderTest, RecoversFromDroppedFrames) {
// Feed 20 frames and expect 20 to be decoded. At random points, drop one or
// more frames.
FeedMoreVideo(0);
FeedMoreVideo(2); // Two frames dropped.
FeedMoreVideo(0);
FeedMoreVideo(0);
FeedMoreVideo(1); // One frame dropped.
FeedMoreVideo(0);
FeedMoreVideo(0);
FeedMoreVideo(0);
FeedMoreVideo(1); // One frame dropped.
FeedMoreVideo(0);
FeedMoreVideo(0);
FeedMoreVideo(0);
FeedMoreVideo(0);
FeedMoreVideo(3); // Three frames dropped.
FeedMoreVideo(0);
FeedMoreVideo(0);
FeedMoreVideo(10); // Ten frames dropped.
FeedMoreVideo(0);
FeedMoreVideo(1); // One frame dropped.
FeedMoreVideo(0);
WaitForAllVideoToBeDecoded();
}
TEST_P(VideoDecoderTest, DecodesFramesOfVaryingSizes) {
std::vector<gfx::Size> frame_sizes;
frame_sizes.push_back(gfx::Size(128, 72));
frame_sizes.push_back(gfx::Size(64, 36)); // Shrink both dimensions.
frame_sizes.push_back(gfx::Size(30, 20)); // Shrink both dimensions again.
frame_sizes.push_back(gfx::Size(20, 30)); // Same area.
frame_sizes.push_back(gfx::Size(60, 40)); // Grow both dimensions.
frame_sizes.push_back(gfx::Size(58, 40)); // Shrink only one dimension.
frame_sizes.push_back(gfx::Size(58, 38)); // Shrink the other dimension.
frame_sizes.push_back(gfx::Size(32, 18)); // Shrink both dimensions again.
frame_sizes.push_back(gfx::Size(34, 18)); // Grow only one dimension.
frame_sizes.push_back(gfx::Size(34, 20)); // Grow the other dimension.
frame_sizes.push_back(gfx::Size(192, 108)); // Grow both dimensions again.
// Encode one frame at each size.
for (const auto& frame_size : frame_sizes) {
SetNextFrameSize(frame_size);
FeedMoreVideo(0);
}
// Encode 3 frames at each size.
for (const auto& frame_size : frame_sizes) {
SetNextFrameSize(frame_size);
const int kNumFrames = 3;
for (int i = 0; i < kNumFrames; ++i)
FeedMoreVideo(0);
}
WaitForAllVideoToBeDecoded();
}
INSTANTIATE_TEST_CASE_P(,
VideoDecoderTest,
::testing::Values(CODEC_VIDEO_VP8));
} // namespace cast
} // namespace media