blob: 03634de8b01d98b6485b45a0a347a0124a52646a [file] [log] [blame]
// Copyright 2015 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 <stddef.h>
#include <stdint.h>
#include "base/bind.h"
#include "base/location.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "media/audio/audio_parameters.h"
#include "media/base/channel_layout.h"
#include "media/base/video_frame.h"
#include "media/muxers/webm_muxer.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using ::testing::_;
using ::testing::AllOf;
using ::testing::AnyNumber;
using ::testing::AtLeast;
using ::testing::Eq;
using ::testing::InSequence;
using ::testing::Mock;
using ::testing::Not;
using ::testing::Sequence;
using ::testing::TestWithParam;
using ::testing::ValuesIn;
using ::testing::WithArgs;
namespace media {
struct kTestParams {
VideoCodec codec;
size_t num_video_tracks;
size_t num_audio_tracks;
};
class WebmMuxerTest : public TestWithParam<kTestParams> {
public:
WebmMuxerTest()
: webm_muxer_(
GetParam().codec,
GetParam().num_video_tracks,
GetParam().num_audio_tracks,
base::Bind(&WebmMuxerTest::WriteCallback, base::Unretained(this))),
last_encoded_length_(0),
accumulated_position_(0) {
EXPECT_EQ(webm_muxer_.Position(), 0);
const mkvmuxer::int64 kRandomNewPosition = 333;
EXPECT_EQ(webm_muxer_.Position(kRandomNewPosition), -1);
EXPECT_FALSE(webm_muxer_.Seekable());
}
MOCK_METHOD1(WriteCallback, void(base::StringPiece));
void SaveEncodedDataLen(const base::StringPiece& encoded_data) {
last_encoded_length_ = encoded_data.size();
accumulated_position_ += encoded_data.size();
}
mkvmuxer::int64 GetWebmMuxerPosition() const {
return webm_muxer_.Position();
}
mkvmuxer::Segment::Mode GetWebmSegmentMode() const {
return webm_muxer_.segment_.mode();
}
mkvmuxer::int32 WebmMuxerWrite(const void* buf, mkvmuxer::uint32 len) {
return webm_muxer_.Write(buf, len);
}
WebmMuxer webm_muxer_;
size_t last_encoded_length_;
int64_t accumulated_position_;
private:
DISALLOW_COPY_AND_ASSIGN(WebmMuxerTest);
};
// Checks that the WriteCallback is called with appropriate params when
// WebmMuxer::Write() method is called.
TEST_P(WebmMuxerTest, Write) {
const base::StringPiece encoded_data("abcdefghijklmnopqrstuvwxyz");
EXPECT_CALL(*this, WriteCallback(encoded_data));
WebmMuxerWrite(encoded_data.data(), encoded_data.size());
EXPECT_EQ(GetWebmMuxerPosition(), static_cast<int64_t>(encoded_data.size()));
}
// This test sends two frames and checks that the WriteCallback is called with
// appropriate params in both cases.
TEST_P(WebmMuxerTest, OnEncodedVideoTwoFrames) {
if (GetParam().num_audio_tracks > 0)
return;
const gfx::Size frame_size(160, 80);
const scoped_refptr<VideoFrame> video_frame =
VideoFrame::CreateBlackFrame(frame_size);
const std::string encoded_data("abcdefghijklmnopqrstuvwxyz");
EXPECT_CALL(*this, WriteCallback(_))
.Times(AtLeast(1))
.WillRepeatedly(
WithArgs<0>(Invoke(this, &WebmMuxerTest::SaveEncodedDataLen)));
webm_muxer_.OnEncodedVideo(video_frame,
make_scoped_ptr(new std::string(encoded_data)),
base::TimeTicks::Now(), false /* keyframe */);
// First time around WriteCallback() is pinged a number of times to write the
// Matroska header, but at the end it dumps |encoded_data|.
EXPECT_EQ(last_encoded_length_, encoded_data.size());
EXPECT_EQ(GetWebmMuxerPosition(), accumulated_position_);
EXPECT_GE(GetWebmMuxerPosition(), static_cast<int64_t>(last_encoded_length_));
EXPECT_EQ(GetWebmSegmentMode(), mkvmuxer::Segment::kLive);
const int64_t begin_of_second_block = accumulated_position_;
EXPECT_CALL(*this, WriteCallback(_))
.Times(AtLeast(1))
.WillRepeatedly(
WithArgs<0>(Invoke(this, &WebmMuxerTest::SaveEncodedDataLen)));
webm_muxer_.OnEncodedVideo(video_frame,
make_scoped_ptr(new std::string(encoded_data)),
base::TimeTicks::Now(), false /* keyframe */);
// The second time around the callbacks should include a SimpleBlock header,
// namely the track index, a timestamp and a flags byte, for a total of 6B.
EXPECT_EQ(last_encoded_length_, encoded_data.size());
EXPECT_EQ(GetWebmMuxerPosition(), accumulated_position_);
const uint32_t kSimpleBlockSize = 6u;
EXPECT_EQ(static_cast<int64_t>(begin_of_second_block + kSimpleBlockSize +
encoded_data.size()),
accumulated_position_);
}
TEST_P(WebmMuxerTest, OnEncodedAudioTwoFrames) {
if (GetParam().num_video_tracks > 0)
return;
const int sample_rate = 48000;
const int bits_per_sample = 16;
const int frames_per_buffer = 480;
media::AudioParameters audio_params(
media::AudioParameters::Format::AUDIO_PCM_LOW_LATENCY,
media::CHANNEL_LAYOUT_MONO, sample_rate, bits_per_sample,
frames_per_buffer);
const std::string encoded_data("abcdefghijklmnopqrstuvwxyz");
EXPECT_CALL(*this, WriteCallback(_))
.Times(AtLeast(1))
.WillRepeatedly(
WithArgs<0>(Invoke(this, &WebmMuxerTest::SaveEncodedDataLen)));
webm_muxer_.OnEncodedAudio(audio_params,
make_scoped_ptr(new std::string(encoded_data)),
base::TimeTicks::Now());
// First time around WriteCallback() is pinged a number of times to write the
// Matroska header, but at the end it dumps |encoded_data|.
EXPECT_EQ(last_encoded_length_, encoded_data.size());
EXPECT_EQ(GetWebmMuxerPosition(), accumulated_position_);
EXPECT_GE(GetWebmMuxerPosition(), static_cast<int64_t>(last_encoded_length_));
EXPECT_EQ(GetWebmSegmentMode(), mkvmuxer::Segment::kLive);
const int64_t begin_of_second_block = accumulated_position_;
EXPECT_CALL(*this, WriteCallback(_))
.Times(AtLeast(1))
.WillRepeatedly(
WithArgs<0>(Invoke(this, &WebmMuxerTest::SaveEncodedDataLen)));
webm_muxer_.OnEncodedAudio(audio_params,
make_scoped_ptr(new std::string(encoded_data)),
base::TimeTicks::Now());
// The second time around the callbacks should include a SimpleBlock header,
// namely the track index, a timestamp and a flags byte, for a total of 6B.
EXPECT_EQ(last_encoded_length_, encoded_data.size());
EXPECT_EQ(GetWebmMuxerPosition(), accumulated_position_);
const uint32_t kSimpleBlockSize = 6u;
EXPECT_EQ(static_cast<int64_t>(begin_of_second_block + kSimpleBlockSize +
encoded_data.size()),
accumulated_position_);
}
// This test verifies that when video data comes before audio data, we save the
// encoded video frames and add it to the video track when audio data arrives.
TEST_P(WebmMuxerTest, VideoIsStoredWhileWaitingForAudio) {
// This test is only relevant if we have both kinds of tracks.
if (GetParam().num_video_tracks == 0 || GetParam().num_audio_tracks == 0)
return;
// First send a video keyframe
const gfx::Size frame_size(160, 80);
const scoped_refptr<VideoFrame> video_frame =
VideoFrame::CreateBlackFrame(frame_size);
const std::string encoded_video("thisisanencodedvideopacket");
webm_muxer_.OnEncodedVideo(video_frame,
make_scoped_ptr(new std::string(encoded_video)),
base::TimeTicks::Now(), true /* keyframe */);
// A few encoded non key frames.
const int kNumNonKeyFrames = 2;
for (int i = 0; i < kNumNonKeyFrames; ++i) {
webm_muxer_.OnEncodedVideo(video_frame,
make_scoped_ptr(new std::string(encoded_video)),
base::TimeTicks::Now(), false /* keyframe */);
}
// Send some audio. The header will be written and muxing will proceed
// normally.
const int sample_rate = 48000;
const int bits_per_sample = 16;
const int frames_per_buffer = 480;
media::AudioParameters audio_params(
media::AudioParameters::Format::AUDIO_PCM_LOW_LATENCY,
media::CHANNEL_LAYOUT_MONO, sample_rate, bits_per_sample,
frames_per_buffer);
const std::string encoded_audio("thisisanencodedaudiopacket");
// We should first get the encoded video frames, then the encoded audio frame.
Sequence s;
EXPECT_CALL(*this, WriteCallback(Eq(encoded_video)))
.Times(1 + kNumNonKeyFrames)
.InSequence(s);
EXPECT_CALL(*this, WriteCallback(Eq(encoded_audio))).Times(1).InSequence(s);
// We'll also get lots of other header-related stuff.
EXPECT_CALL(*this, WriteCallback(
AllOf(Not(Eq(encoded_video)), Not(Eq(encoded_audio)))))
.Times(AnyNumber());
webm_muxer_.OnEncodedAudio(audio_params,
make_scoped_ptr(new std::string(encoded_audio)),
base::TimeTicks::Now());
}
const kTestParams kTestCases[] = {
// TODO: consider not enumerating every combination by hand.
{kCodecVP8, 1 /* num_video_tracks */, 0 /*num_audio_tracks*/},
{kCodecVP8, 0, 1},
{kCodecVP8, 1, 1},
{kCodecVP9, 1, 0},
{kCodecVP9, 0, 1},
{kCodecVP9, 1, 1},
};
INSTANTIATE_TEST_CASE_P(, WebmMuxerTest, ValuesIn(kTestCases));
} // namespace media