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shaka-packager/packager/mpd/base/representation_unittest.cc

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// Copyright 2017 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
#include "packager/mpd/base/representation.h"
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <inttypes.h>
#include "packager/base/strings/stringprintf.h"
#include "packager/mpd/base/mpd_options.h"
#include "packager/mpd/test/mpd_builder_test_helper.h"
#include "packager/mpd/test/xml_compare.h"
using ::testing::Not;
namespace shaka {
namespace {
const uint32_t kAnyRepresentationId = 1;
class MockRepresentationStateChangeListener
: public RepresentationStateChangeListener {
public:
MockRepresentationStateChangeListener() {}
~MockRepresentationStateChangeListener() {}
MOCK_METHOD2(OnNewSegmentForRepresentation,
void(uint64_t start_time, uint64_t duration));
MOCK_METHOD2(OnSetFrameRateForRepresentation,
void(uint32_t frame_duration, uint32_t timescale));
};
} // namespace
class RepresentationTest : public ::testing::Test {
public:
// TODO(rkuroiwa): Once std::forward() is allowed by chromium style guide, use
// variadic template and std::forward() so that we don't need to copy the
// constructor signatures.
std::unique_ptr<Representation> CreateRepresentation(
const MediaInfo& media_info,
uint32_t representation_id,
std::unique_ptr<RepresentationStateChangeListener>
state_change_listener) {
return std::unique_ptr<Representation>(
new Representation(media_info, mpd_options_, representation_id,
std::move(state_change_listener)));
}
std::unique_ptr<Representation> CopyRepresentation(
const Representation& representation,
std::unique_ptr<RepresentationStateChangeListener>
state_change_listener) {
return std::unique_ptr<Representation>(
new Representation(representation, std::move(state_change_listener)));
}
std::unique_ptr<RepresentationStateChangeListener> NoListener() {
return std::unique_ptr<RepresentationStateChangeListener>();
}
protected:
MpdOptions mpd_options_;
};
// Verify that Representation::Init() works with all "required" fields of
// MedieInfo proto.
TEST_F(RepresentationTest, ValidMediaInfo) {
const char kTestMediaInfo[] =
"video_info {\n"
" codec: 'avc1'\n"
" width: 720\n"
" height: 480\n"
" time_scale: 10\n"
" frame_duration: 10\n"
" pixel_width: 1\n"
" pixel_height: 1\n"
"}\n"
"container_type: 1\n";
auto representation = CreateRepresentation(
ConvertToMediaInfo(kTestMediaInfo), kAnyRepresentationId, NoListener());
EXPECT_TRUE(representation->Init());
}
// Verify that if VideoInfo, AudioInfo, or TextInfo is not set, Init() fails.
TEST_F(RepresentationTest, VideoAudioTextInfoNotSet) {
const char kTestMediaInfo[] = "container_type: 1";
auto representation = CreateRepresentation(
ConvertToMediaInfo(kTestMediaInfo), kAnyRepresentationId, NoListener());
EXPECT_FALSE(representation->Init());
}
// Verify that if more than one of VideoInfo, AudioInfo, or TextInfo is set,
// then Init() fails.
TEST_F(RepresentationTest, VideoAndAudioInfoSet) {
const char kTestMediaInfo[] =
"video_info {\n"
" codec: 'avc1'\n"
" height: 480\n"
" time_scale: 10\n"
" frame_duration: 10\n"
" pixel_width: 1\n"
" pixel_height: 1\n"
"}\n"
"audio_info {\n"
" codec: 'mp4a.40.2'\n"
" sampling_frequency: 44100\n"
" time_scale: 1200\n"
" num_channels: 2\n"
"}\n"
"container_type: CONTAINER_MP4\n";
auto representation = CreateRepresentation(
ConvertToMediaInfo(kTestMediaInfo), kAnyRepresentationId, NoListener());
EXPECT_FALSE(representation->Init());
}
// Verify that Representation::Init() fails if a required field is missing.
TEST_F(RepresentationTest, InvalidMediaInfo) {
// Missing width.
const char kTestMediaInfo[] =
"video_info {\n"
" codec: 'avc1'\n"
" height: 480\n"
" time_scale: 10\n"
" frame_duration: 10\n"
" pixel_width: 1\n"
" pixel_height: 1\n"
"}\n"
"container_type: 1\n";
auto representation = CreateRepresentation(
ConvertToMediaInfo(kTestMediaInfo), kAnyRepresentationId, NoListener());
EXPECT_FALSE(representation->Init());
}
// Basic check that the fields in video info are in the XML.
TEST_F(RepresentationTest, CheckVideoInfoReflectedInXml) {
const char kTestMediaInfo[] =
"video_info {\n"
" codec: 'avc1'\n"
" width: 1280\n"
" height: 720\n"
" time_scale: 10\n"
" frame_duration: 10\n"
" pixel_width: 1\n"
" pixel_height: 1\n"
"}\n"
"container_type: 1\n";
auto representation = CreateRepresentation(
ConvertToMediaInfo(kTestMediaInfo), kAnyRepresentationId, NoListener());
ASSERT_TRUE(representation->Init());
const char kExpectedOutput[] =
"<Representation id=\"1\" bandwidth=\"0\" "
" codecs=\"avc1\" mimeType=\"video/mp4\" "
" sar=\"1:1\" width=\"1280\" height=\"720\" "
" frameRate=\"10/10\"/>";
EXPECT_THAT(representation->GetXml().get(), XmlNodeEqual(kExpectedOutput));
}
TEST_F(RepresentationTest, CheckVideoInfoVp8CodecInMp4) {
const char kTestMediaInfoCodecVp8[] =
"video_info {\n"
" codec: 'vp08.00.00.08.01.01.00.00'\n"
" width: 1280\n"
" height: 720\n"
" time_scale: 10\n"
" frame_duration: 10\n"
" pixel_width: 1\n"
" pixel_height: 1\n"
"}\n"
"container_type: 1\n";
auto representation =
CreateRepresentation(ConvertToMediaInfo(kTestMediaInfoCodecVp8),
kAnyRepresentationId, NoListener());
ASSERT_TRUE(representation->Init());
EXPECT_THAT(representation->GetXml().get(),
AttributeEqual("codecs", "vp08.00.00.08.01.01.00.00"));
}
// Check that vp8 codec string will be updated for backward compatibility
// support in webm.
TEST_F(RepresentationTest, CheckVideoInfoVp8CodecInWebm) {
const char kTestMediaInfoCodecVp8[] =
"video_info {\n"
" codec: 'vp08.00.00.08.01.01.00.00'\n"
" width: 1280\n"
" height: 720\n"
" time_scale: 10\n"
" frame_duration: 10\n"
" pixel_width: 1\n"
" pixel_height: 1\n"
"}\n"
"container_type: 3\n";
auto representation =
CreateRepresentation(ConvertToMediaInfo(kTestMediaInfoCodecVp8),
kAnyRepresentationId, NoListener());
ASSERT_TRUE(representation->Init());
EXPECT_THAT(representation->GetXml().get(), AttributeEqual("codecs", "vp8"));
}
// Check that vp9 codec string will be updated for backward compatibility
// support in webm.
TEST_F(RepresentationTest, CheckVideoInfoVp9CodecInWebm) {
const char kTestMediaInfoCodecVp9[] =
"video_info {\n"
" codec: 'vp09.00.00.08.01.01.00.00'\n"
" width: 1280\n"
" height: 720\n"
" time_scale: 10\n"
" frame_duration: 10\n"
" pixel_width: 1\n"
" pixel_height: 1\n"
"}\n"
"container_type: 3\n";
auto representation =
CreateRepresentation(ConvertToMediaInfo(kTestMediaInfoCodecVp9),
kAnyRepresentationId, NoListener());
ASSERT_TRUE(representation->Init());
EXPECT_THAT(representation->GetXml().get(), AttributeEqual("codecs", "vp9"));
}
// Make sure RepresentationStateChangeListener::OnNewSegmentForRepresentation()
// is called.
TEST_F(RepresentationTest,
RepresentationStateChangeListenerOnNewSegmentForRepresentation) {
const char kTestMediaInfo[] =
"video_info {\n"
" codec: 'avc1'\n"
" width: 720\n"
" height: 480\n"
" time_scale: 10\n"
" frame_duration: 10\n"
" pixel_width: 1\n"
" pixel_height: 1\n"
"}\n"
"container_type: 1\n";
const uint64_t kStartTime = 199238u;
const uint64_t kDuration = 98u;
std::unique_ptr<MockRepresentationStateChangeListener> listener(
new MockRepresentationStateChangeListener());
EXPECT_CALL(*listener, OnNewSegmentForRepresentation(kStartTime, kDuration));
auto representation =
CreateRepresentation(ConvertToMediaInfo(kTestMediaInfo),
kAnyRepresentationId, std::move(listener));
EXPECT_TRUE(representation->Init());
representation->AddNewSegment(kStartTime, kDuration, 10 /* any size */);
}
// Make sure
// RepresentationStateChangeListener::OnSetFrameRateForRepresentation()
// is called.
TEST_F(RepresentationTest,
RepresentationStateChangeListenerOnSetFrameRateForRepresentation) {
const char kTestMediaInfo[] =
"video_info {\n"
" codec: 'avc1'\n"
" width: 720\n"
" height: 480\n"
" time_scale: 1000\n"
" frame_duration: 10\n"
" pixel_width: 1\n"
" pixel_height: 1\n"
"}\n"
"container_type: 1\n";
const uint64_t kTimeScale = 1000u;
const uint64_t kFrameDuration = 33u;
std::unique_ptr<MockRepresentationStateChangeListener> listener(
new MockRepresentationStateChangeListener());
EXPECT_CALL(*listener,
OnSetFrameRateForRepresentation(kFrameDuration, kTimeScale));
auto representation =
CreateRepresentation(ConvertToMediaInfo(kTestMediaInfo),
kAnyRepresentationId, std::move(listener));
EXPECT_TRUE(representation->Init());
representation->SetSampleDuration(kFrameDuration);
}
TEST_F(RepresentationTest, TtmlXmlMimeType) {
const char kTtmlXmlMediaInfo[] =
"text_info {\n"
" format: 'ttml'\n"
"}\n"
"container_type: CONTAINER_TEXT\n";
auto representation =
CreateRepresentation(ConvertToMediaInfo(kTtmlXmlMediaInfo),
kAnyRepresentationId, NoListener());
ASSERT_TRUE(representation->Init());
EXPECT_THAT(representation->GetXml().get(),
AttributeEqual("mimeType", "application/ttml+xml"));
}
TEST_F(RepresentationTest, TtmlMp4MimeType) {
const char kTtmlMp4MediaInfo[] =
"text_info {\n"
" format: 'ttml'\n"
"}\n"
"container_type: CONTAINER_MP4\n";
auto representation =
CreateRepresentation(ConvertToMediaInfo(kTtmlMp4MediaInfo),
kAnyRepresentationId, NoListener());
ASSERT_TRUE(representation->Init());
EXPECT_THAT(representation->GetXml().get(),
AttributeEqual("mimeType", "application/mp4"));
}
TEST_F(RepresentationTest, WebVttMimeType) {
const char kWebVttMediaInfo[] =
"text_info {\n"
" format: 'vtt'\n"
"}\n"
"container_type: CONTAINER_TEXT\n";
auto representation = CreateRepresentation(
ConvertToMediaInfo(kWebVttMediaInfo), kAnyRepresentationId, NoListener());
ASSERT_TRUE(representation->Init());
EXPECT_THAT(representation->GetXml().get(),
AttributeEqual("mimeType", "text/vtt"));
}
// Verify that Suppress*() methods work.
TEST_F(RepresentationTest, SuppressRepresentationAttributes) {
const char kTestMediaInfo[] =
"video_info {\n"
" codec: 'avc1'\n"
" width: 720\n"
" height: 480\n"
" time_scale: 10\n"
" frame_duration: 10\n"
" pixel_width: 1\n"
" pixel_height: 1\n"
"}\n"
"container_type: 1\n";
auto representation = CreateRepresentation(
ConvertToMediaInfo(kTestMediaInfo), kAnyRepresentationId, NoListener());
representation->SuppressOnce(Representation::kSuppressWidth);
xml::scoped_xml_ptr<xmlNode> no_width(representation->GetXml());
EXPECT_THAT(no_width.get(), Not(AttributeSet("width")));
EXPECT_THAT(no_width.get(), AttributeEqual("height", "480"));
EXPECT_THAT(no_width.get(), AttributeEqual("frameRate", "10/10"));
representation->SuppressOnce(Representation::kSuppressHeight);
xml::scoped_xml_ptr<xmlNode> no_height(representation->GetXml());
EXPECT_THAT(no_height.get(), Not(AttributeSet("height")));
EXPECT_THAT(no_height.get(), AttributeEqual("width", "720"));
EXPECT_THAT(no_height.get(), AttributeEqual("frameRate", "10/10"));
representation->SuppressOnce(Representation::kSuppressFrameRate);
xml::scoped_xml_ptr<xmlNode> no_frame_rate(representation->GetXml());
EXPECT_THAT(no_frame_rate.get(), Not(AttributeSet("frameRate")));
EXPECT_THAT(no_frame_rate.get(), AttributeEqual("width", "720"));
EXPECT_THAT(no_frame_rate.get(), AttributeEqual("height", "480"));
}
TEST_F(RepresentationTest, CheckRepresentationId) {
const MediaInfo video_media_info = GetTestMediaInfo(kFileNameVideoMediaInfo1);
const uint32_t kRepresentationId = 1;
auto representation =
CreateRepresentation(video_media_info, kRepresentationId, NoListener());
EXPECT_TRUE(representation->Init());
EXPECT_THAT(representation->GetXml().get(),
AttributeEqual("id", std::to_string(kRepresentationId)));
}
namespace {
// Any number for {AdaptationSet,Representation} ID. Required to create
// either objects. Not checked in test.
const char kSElementTemplate[] =
"<S t=\"%" PRIu64 "\" d=\"%" PRIu64 "\" r=\"%" PRIu64 "\"/>\n";
const char kSElementTemplateWithoutR[] =
"<S t=\"%" PRIu64 "\" d=\"%" PRIu64 "\"/>\n";
const int kDefaultStartNumber = 1;
const uint32_t kDefaultTimeScale = 1000u;
std::string GetDefaultMediaInfo() {
const char kMediaInfo[] =
"video_info {\n"
" codec: 'avc1.010101'\n"
" width: 720\n"
" height: 480\n"
" time_scale: 10\n"
" frame_duration: 5\n"
" pixel_width: 1\n"
" pixel_height: 1\n"
"}\n"
"reference_time_scale: %u\n"
"container_type: 1\n"
"init_segment_name: 'init.mp4'\n"
"segment_template: '$Time$.mp4'\n";
return base::StringPrintf(kMediaInfo, kDefaultTimeScale);
}
} // namespace
class SegmentTemplateTest : public RepresentationTest {
public:
SegmentTemplateTest()
: bandwidth_estimator_(BandwidthEstimator::kUseAllBlocks) {}
~SegmentTemplateTest() override {}
void SetUp() override {
mpd_options_.mpd_type = MpdType::kDynamic;
representation_ =
CreateRepresentation(ConvertToMediaInfo(GetDefaultMediaInfo()),
kAnyRepresentationId, NoListener());
ASSERT_TRUE(representation_->Init());
}
void AddSegments(uint64_t start_time,
uint64_t duration,
uint64_t size,
uint64_t repeat) {
DCHECK(representation_);
SegmentInfo s = {start_time, duration, repeat};
segment_infos_for_expected_out_.push_back(s);
if (repeat == 0) {
expected_s_elements_ +=
base::StringPrintf(kSElementTemplateWithoutR, start_time, duration);
} else {
expected_s_elements_ +=
base::StringPrintf(kSElementTemplate, start_time, duration, repeat);
}
for (uint64_t i = 0; i < repeat + 1; ++i) {
representation_->AddNewSegment(start_time, duration, size);
start_time += duration;
bandwidth_estimator_.AddBlock(
size, static_cast<double>(duration) / kDefaultTimeScale);
}
}
protected:
std::string ExpectedXml() {
const char kOutputTemplate[] =
"<Representation id=\"1\" bandwidth=\"%" PRIu64
"\" "
" codecs=\"avc1.010101\" mimeType=\"video/mp4\" sar=\"1:1\" "
" width=\"720\" height=\"480\" frameRate=\"10/5\">\n"
" <SegmentTemplate timescale=\"1000\" "
" initialization=\"init.mp4\" media=\"$Time$.mp4\">\n"
" <SegmentTimeline>\n"
" %s\n"
" </SegmentTimeline>\n"
" </SegmentTemplate>\n"
"</Representation>\n";
return base::StringPrintf(kOutputTemplate, bandwidth_estimator_.Max(),
expected_s_elements_.c_str());
}
std::unique_ptr<Representation> representation_;
std::list<SegmentInfo> segment_infos_for_expected_out_;
std::string expected_s_elements_;
BandwidthEstimator bandwidth_estimator_;
};
// Estimate the bandwidth given the info from AddNewSegment().
TEST_F(SegmentTemplateTest, OneSegmentNormal) {
const uint64_t kStartTime = 0;
const uint64_t kDuration = 10;
const uint64_t kSize = 128;
AddSegments(kStartTime, kDuration, kSize, 0);
const char kExpectedXml[] =
"<Representation id=\"1\" bandwidth=\"102400\" "
" codecs=\"avc1.010101\" mimeType=\"video/mp4\" sar=\"1:1\" "
" width=\"720\" height=\"480\" frameRate=\"10/5\">\n"
" <SegmentTemplate timescale=\"1000\" "
" initialization=\"init.mp4\" media=\"$Time$.mp4\">\n"
" <SegmentTimeline>\n"
" <S t=\"0\" d=\"10\"/>\n"
" </SegmentTimeline>\n"
" </SegmentTemplate>\n"
"</Representation>\n";
EXPECT_THAT(representation_->GetXml().get(), XmlNodeEqual(kExpectedXml));
}
TEST_F(SegmentTemplateTest, RepresentationClone) {
MediaInfo media_info = ConvertToMediaInfo(GetDefaultMediaInfo());
media_info.set_segment_template("$Number$.mp4");
representation_ =
CreateRepresentation(media_info, kAnyRepresentationId, NoListener());
ASSERT_TRUE(representation_->Init());
const uint64_t kStartTime = 0;
const uint64_t kDuration = 10;
const uint64_t kSize = 128;
AddSegments(kStartTime, kDuration, kSize, 0);
auto cloned_representation =
CopyRepresentation(*representation_, NoListener());
const char kExpectedXml[] =
"<Representation id=\"1\" bandwidth=\"0\" "
" codecs=\"avc1.010101\" mimeType=\"video/mp4\" sar=\"1:1\" "
" width=\"720\" height=\"480\" frameRate=\"10/5\">\n"
" <SegmentTemplate timescale=\"1000\" initialization=\"init.mp4\" "
" media=\"$Number$.mp4\" startNumber=\"2\">\n"
" <SegmentTimeline/>\n"
" </SegmentTemplate>\n"
"</Representation>\n";
EXPECT_THAT(cloned_representation->GetXml().get(),
XmlNodeEqual(kExpectedXml));
}
TEST_F(SegmentTemplateTest, PresentationTimeOffset) {
const uint64_t kStartTime = 0;
const uint64_t kDuration = 10;
const uint64_t kSize = 128;
AddSegments(kStartTime, kDuration, kSize, 0);
const double kPresentationTimeOffsetSeconds = 2.3;
representation_->SetPresentationTimeOffset(kPresentationTimeOffsetSeconds);
const char kExpectedXml[] =
"<Representation id=\"1\" bandwidth=\"102400\" "
" codecs=\"avc1.010101\" mimeType=\"video/mp4\" sar=\"1:1\" "
" width=\"720\" height=\"480\" frameRate=\"10/5\">\n"
" <SegmentTemplate timescale=\"1000\" presentationTimeOffset=\"2300\""
" initialization=\"init.mp4\" media=\"$Time$.mp4\">\n"
" <SegmentTimeline>\n"
" <S t=\"0\" d=\"10\"/>\n"
" </SegmentTimeline>\n"
" </SegmentTemplate>\n"
"</Representation>\n";
EXPECT_THAT(representation_->GetXml().get(), XmlNodeEqual(kExpectedXml));
}
TEST_F(SegmentTemplateTest, GetStartAndEndTimestamps) {
double start_timestamp;
double end_timestamp;
// No segments.
EXPECT_FALSE(representation_->GetStartAndEndTimestamps(&start_timestamp,
&end_timestamp));
const uint64_t kStartTime = 88;
const uint64_t kDuration = 10;
const uint64_t kSize = 128;
AddSegments(kStartTime, kDuration, kSize, 0);
AddSegments(kStartTime + kDuration, kDuration, kSize, 2);
ASSERT_TRUE(representation_->GetStartAndEndTimestamps(&start_timestamp,
&end_timestamp));
EXPECT_EQ(static_cast<double>(kStartTime) / kDefaultTimeScale,
start_timestamp);
EXPECT_EQ(static_cast<double>(kStartTime + kDuration * 4) / kDefaultTimeScale,
end_timestamp);
}
TEST_F(SegmentTemplateTest, NormalRepeatedSegmentDuration) {
const uint64_t kSize = 256;
uint64_t start_time = 0;
uint64_t duration = 40000;
uint64_t repeat = 2;
AddSegments(start_time, duration, kSize, repeat);
start_time += duration * (repeat + 1);
duration = 54321;
repeat = 0;
AddSegments(start_time, duration, kSize, repeat);
start_time += duration * (repeat + 1);
duration = 12345;
repeat = 0;
AddSegments(start_time, duration, kSize, repeat);
EXPECT_THAT(representation_->GetXml().get(), XmlNodeEqual(ExpectedXml()));
}
TEST_F(SegmentTemplateTest, RepeatedSegmentsFromNonZeroStartTime) {
const uint64_t kSize = 100000;
uint64_t start_time = 0;
uint64_t duration = 100000;
uint64_t repeat = 2;
AddSegments(start_time, duration, kSize, repeat);
start_time += duration * (repeat + 1);
duration = 20000;
repeat = 3;
AddSegments(start_time, duration, kSize, repeat);
start_time += duration * (repeat + 1);
duration = 32123;
repeat = 3;
AddSegments(start_time, duration, kSize, repeat);
EXPECT_THAT(representation_->GetXml().get(), XmlNodeEqual(ExpectedXml()));
}
// Segments not starting from 0.
// Start time is 10. Make sure r gets set correctly.
TEST_F(SegmentTemplateTest, NonZeroStartTime) {
const uint64_t kStartTime = 10;
const uint64_t kDuration = 22000;
const uint64_t kSize = 123456;
const uint64_t kRepeat = 1;
AddSegments(kStartTime, kDuration, kSize, kRepeat);
EXPECT_THAT(representation_->GetXml().get(), XmlNodeEqual(ExpectedXml()));
}
// There is a gap in the segments, but still valid.
TEST_F(SegmentTemplateTest, NonContiguousLiveInfo) {
const uint64_t kStartTime = 10;
const uint64_t kDuration = 22000;
const uint64_t kSize = 123456;
const uint64_t kRepeat = 0;
AddSegments(kStartTime, kDuration, kSize, kRepeat);
const uint64_t kStartTimeOffset = 100;
AddSegments(kDuration + kStartTimeOffset, kDuration, kSize, kRepeat);
EXPECT_THAT(representation_->GetXml().get(), XmlNodeEqual(ExpectedXml()));
}
// Add segments out of order. Segments that start before the previous segment
// cannot be added.
TEST_F(SegmentTemplateTest, OutOfOrder) {
const uint64_t kEarlierStartTime = 0;
const uint64_t kLaterStartTime = 1000;
const uint64_t kDuration = 1000;
const uint64_t kSize = 123456;
const uint64_t kRepeat = 0;
AddSegments(kLaterStartTime, kDuration, kSize, kRepeat);
AddSegments(kEarlierStartTime, kDuration, kSize, kRepeat);
EXPECT_THAT(representation_->GetXml().get(), XmlNodeEqual(ExpectedXml()));
}
// No segments should be overlapping.
TEST_F(SegmentTemplateTest, OverlappingSegments) {
const uint64_t kEarlierStartTime = 0;
const uint64_t kDuration = 1000;
const uint64_t kSize = 123456;
const uint64_t kRepeat = 0;
const uint64_t kOverlappingSegmentStartTime = kDuration / 2;
CHECK_GT(kDuration, kOverlappingSegmentStartTime);
AddSegments(kEarlierStartTime, kDuration, kSize, kRepeat);
AddSegments(kOverlappingSegmentStartTime, kDuration, kSize, kRepeat);
EXPECT_THAT(representation_->GetXml().get(), XmlNodeEqual(ExpectedXml()));
}
// Some segments can be overlapped due to rounding errors. As long as it falls
// in the range of rounding error defined inside MpdBuilder, the segment gets
// accepted.
TEST_F(SegmentTemplateTest, OverlappingSegmentsWithinErrorRange) {
const uint64_t kEarlierStartTime = 0;
const uint64_t kDuration = 1000;
const uint64_t kSize = 123456;
const uint64_t kRepeat = 0;
const uint64_t kOverlappingSegmentStartTime = kDuration - 1;
CHECK_GT(kDuration, kOverlappingSegmentStartTime);
AddSegments(kEarlierStartTime, kDuration, kSize, kRepeat);
AddSegments(kOverlappingSegmentStartTime, kDuration, kSize, kRepeat);
EXPECT_THAT(representation_->GetXml().get(), XmlNodeEqual(ExpectedXml()));
}
class TimeShiftBufferDepthTest : public SegmentTemplateTest {
public:
void SetUp() override {
// The only diff with current GetDefaultMediaInfo() is that this uses
// $Number$ for segment template.
const char kMediaInfo[] =
"video_info {\n"
" codec: 'avc1.010101'\n"
" width: 720\n"
" height: 480\n"
" time_scale: 10\n"
" frame_duration: 2\n"
" pixel_width: 1\n"
" pixel_height: 1\n"
"}\n"
"reference_time_scale: %u\n"
"container_type: 1\n"
"init_segment_name: 'init.mp4'\n"
"segment_template: '$Number$.mp4'\n";
const std::string& number_template_media_info =
base::StringPrintf(kMediaInfo, kDefaultTimeScale);
mpd_options_.mpd_type = MpdType::kDynamic;
representation_ =
CreateRepresentation(ConvertToMediaInfo(number_template_media_info),
kAnyRepresentationId, NoListener());
ASSERT_TRUE(representation_->Init());
}
std::string ExpectedXml(const std::string& expected_s_element,
int expected_start_number) {
const char kOutputTemplate[] =
"<Representation id=\"1\" bandwidth=\"%" PRIu64
"\" "
" codecs=\"avc1.010101\" mimeType=\"video/mp4\" sar=\"1:1\" "
" width=\"720\" height=\"480\" frameRate=\"10/2\">\n"
" <SegmentTemplate timescale=\"1000\" "
" initialization=\"init.mp4\" media=\"$Number$.mp4\" "
" startNumber=\"%d\">\n"
" <SegmentTimeline>\n"
" %s\n"
" </SegmentTimeline>\n"
" </SegmentTemplate>\n"
"</Representation>\n";
return base::StringPrintf(kOutputTemplate, bandwidth_estimator_.Max(),
expected_start_number,
expected_s_element.c_str());
}
MpdOptions* mutable_mpd_options() { return &mpd_options_; }
};
// All segments have the same duration and size.
TEST_F(TimeShiftBufferDepthTest, Normal) {
const int kTimeShiftBufferDepth = 10; // 10 sec.
mutable_mpd_options()->mpd_params.time_shift_buffer_depth =
kTimeShiftBufferDepth;
const uint64_t kInitialStartTime = 0;
// Trick to make every segment 1 second long.
const uint64_t kDuration = kDefaultTimeScale;
const uint64_t kSize = 10000;
const uint64_t kRepeat = 1234;
const uint64_t kLength = kRepeat;
CHECK_EQ(kDuration / kDefaultTimeScale * kRepeat, kLength);
AddSegments(kInitialStartTime, kDuration, kSize, kRepeat);
// There should only be the last 11 segments because timeshift is 10 sec and
// each segment is 1 sec and the latest segments start time is "current
// time" i.e., the latest segment does not count as part of timeshift buffer
// depth.
// Also note that S@r + 1 is the actual number of segments.
const int kExpectedRepeatsLeft = kTimeShiftBufferDepth;
const std::string expected_s_element = base::StringPrintf(
kSElementTemplate, kDuration * (kRepeat - kExpectedRepeatsLeft),
kDuration, static_cast<uint64_t>(kExpectedRepeatsLeft));
const int kExpectedStartNumber = kRepeat - kExpectedRepeatsLeft + 1;
EXPECT_THAT(
representation_->GetXml().get(),
XmlNodeEqual(ExpectedXml(expected_s_element, kExpectedStartNumber)));
}
// TimeShiftBufferDepth is shorter than a segment. This should not discard the
// segment that can play TimeShiftBufferDepth.
// For example if TimeShiftBufferDepth = 1 min. and a 10 min segment was just
// added. Before that 9 min segment was added. The 9 min segment should not be
// removed from the MPD.
TEST_F(TimeShiftBufferDepthTest, TimeShiftBufferDepthShorterThanSegmentLength) {
const int kTimeShiftBufferDepth = 10; // 10 sec.
mutable_mpd_options()->mpd_params.time_shift_buffer_depth =
kTimeShiftBufferDepth;
const uint64_t kInitialStartTime = 0;
// Each duration is a second longer than timeShiftBufferDepth.
const uint64_t kDuration = kDefaultTimeScale * (kTimeShiftBufferDepth + 1);
const uint64_t kSize = 10000;
const uint64_t kRepeat = 1;
AddSegments(kInitialStartTime, kDuration, kSize, kRepeat);
// The two segments should be both present.
const std::string expected_s_element = base::StringPrintf(
kSElementTemplate, kInitialStartTime, kDuration, kRepeat);
EXPECT_THAT(
representation_->GetXml().get(),
XmlNodeEqual(ExpectedXml(expected_s_element, kDefaultStartNumber)));
}
// More generic version the normal test.
TEST_F(TimeShiftBufferDepthTest, Generic) {
const int kTimeShiftBufferDepth = 30;
mutable_mpd_options()->mpd_params.time_shift_buffer_depth =
kTimeShiftBufferDepth;
const uint64_t kInitialStartTime = 123;
const uint64_t kDuration = kDefaultTimeScale;
const uint64_t kSize = 10000;
const uint64_t kRepeat = 1000;
AddSegments(kInitialStartTime, kDuration, kSize, kRepeat);
const uint64_t first_s_element_end_time =
kInitialStartTime + kDuration * (kRepeat + 1);
// Now add 2 kTimeShiftBufferDepth long segments.
const int kNumMoreSegments = 2;
const int kMoreSegmentsRepeat = kNumMoreSegments - 1;
const uint64_t kTimeShiftBufferDepthDuration =
kDefaultTimeScale * kTimeShiftBufferDepth;
AddSegments(first_s_element_end_time, kTimeShiftBufferDepthDuration, kSize,
kMoreSegmentsRepeat);
// Expect only the latest S element with 2 segments.
const std::string expected_s_element =
base::StringPrintf(kSElementTemplate, first_s_element_end_time,
kTimeShiftBufferDepthDuration,
static_cast<uint64_t>(kMoreSegmentsRepeat));
const int kExpectedRemovedSegments = kRepeat + 1;
EXPECT_THAT(
representation_->GetXml().get(),
XmlNodeEqual(ExpectedXml(
expected_s_element, kDefaultStartNumber + kExpectedRemovedSegments)));
}
// More than 1 S element in the result.
// Adds 100 one-second segments. Then add 21 two-second segments.
// This should have all of the two-second segments and 60 one-second
// segments. Note that it expects 60 segments from the first S element because
// the most recent segment added does not count
TEST_F(TimeShiftBufferDepthTest, MoreThanOneS) {
const int kTimeShiftBufferDepth = 100;
mutable_mpd_options()->mpd_params.time_shift_buffer_depth =
kTimeShiftBufferDepth;
const uint64_t kInitialStartTime = 0;
const uint64_t kSize = 20000;
const uint64_t kOneSecondDuration = kDefaultTimeScale;
const uint64_t kOneSecondSegmentRepeat = 99;
AddSegments(kInitialStartTime, kOneSecondDuration, kSize,
kOneSecondSegmentRepeat);
const uint64_t first_s_element_end_time =
kInitialStartTime + kOneSecondDuration * (kOneSecondSegmentRepeat + 1);
const uint64_t kTwoSecondDuration = 2 * kDefaultTimeScale;
const uint64_t kTwoSecondSegmentRepeat = 20;
AddSegments(first_s_element_end_time, kTwoSecondDuration, kSize,
kTwoSecondSegmentRepeat);
const uint64_t kExpectedRemovedSegments =
(kOneSecondSegmentRepeat + 1 + kTwoSecondSegmentRepeat * 2) -
kTimeShiftBufferDepth;
std::string expected_s_element = base::StringPrintf(
kSElementTemplate, kOneSecondDuration * kExpectedRemovedSegments,
kOneSecondDuration, kOneSecondSegmentRepeat - kExpectedRemovedSegments);
expected_s_element +=
base::StringPrintf(kSElementTemplate, first_s_element_end_time,
kTwoSecondDuration, kTwoSecondSegmentRepeat);
EXPECT_THAT(
representation_->GetXml().get(),
XmlNodeEqual(ExpectedXml(
expected_s_element, kDefaultStartNumber + kExpectedRemovedSegments)));
}
// Edge case where the last segment in S element should still be in the MPD.
// Example:
// Assuming timescale = 1 so that duration of 1 means 1 second.
// TimeShiftBufferDepth is 9 sec and we currently have
// <S t=0 d=1.5 r=1 />
// <S t=3 d=2 r=3 />
// and we add another contiguous 2 second segment.
// Then the first S element's last segment should still be in the MPD.
TEST_F(TimeShiftBufferDepthTest, UseLastSegmentInS) {
const int kTimeShiftBufferDepth = 9;
mutable_mpd_options()->mpd_params.time_shift_buffer_depth =
kTimeShiftBufferDepth;
const uint64_t kInitialStartTime = 1;
const uint64_t kDuration1 = static_cast<uint64_t>(kDefaultTimeScale * 1.5);
const uint64_t kSize = 20000;
const uint64_t kRepeat1 = 1;
AddSegments(kInitialStartTime, kDuration1, kSize, kRepeat1);
const uint64_t first_s_element_end_time =
kInitialStartTime + kDuration1 * (kRepeat1 + 1);
const uint64_t kTwoSecondDuration = 2 * kDefaultTimeScale;
const uint64_t kTwoSecondSegmentRepeat = 4;
AddSegments(first_s_element_end_time, kTwoSecondDuration, kSize,
kTwoSecondSegmentRepeat);
std::string expected_s_element = base::StringPrintf(
kSElementTemplateWithoutR,
kInitialStartTime + kDuration1, // Expect one segment removed.
kDuration1);
expected_s_element +=
base::StringPrintf(kSElementTemplate, first_s_element_end_time,
kTwoSecondDuration, kTwoSecondSegmentRepeat);
EXPECT_THAT(representation_->GetXml().get(),
XmlNodeEqual(ExpectedXml(expected_s_element, 2)));
}
// Gap between S elements but both should be included.
TEST_F(TimeShiftBufferDepthTest, NormalGap) {
const int kTimeShiftBufferDepth = 10;
mutable_mpd_options()->mpd_params.time_shift_buffer_depth =
kTimeShiftBufferDepth;
const uint64_t kInitialStartTime = 0;
const uint64_t kDuration = kDefaultTimeScale;
const uint64_t kSize = 20000;
const uint64_t kRepeat = 6;
// CHECK here so that the when next S element is added with 1 segment, this S
// element doesn't go away.
CHECK_LT(kRepeat - 1u, static_cast<uint64_t>(kTimeShiftBufferDepth));
CHECK_EQ(kDuration, kDefaultTimeScale);
AddSegments(kInitialStartTime, kDuration, kSize, kRepeat);
const uint64_t first_s_element_end_time =
kInitialStartTime + kDuration * (kRepeat + 1);
const uint64_t gap_s_element_start_time = first_s_element_end_time + 1;
AddSegments(gap_s_element_start_time, kDuration, kSize, /* no repeat */ 0);
std::string expected_s_element = base::StringPrintf(
kSElementTemplate, kInitialStartTime, kDuration, kRepeat);
expected_s_element += base::StringPrintf(kSElementTemplateWithoutR,
gap_s_element_start_time, kDuration);
EXPECT_THAT(
representation_->GetXml().get(),
XmlNodeEqual(ExpectedXml(expected_s_element, kDefaultStartNumber)));
}
// Case where there is a huge gap so the first S element is removed.
TEST_F(TimeShiftBufferDepthTest, HugeGap) {
const int kTimeShiftBufferDepth = 10;
mutable_mpd_options()->mpd_params.time_shift_buffer_depth =
kTimeShiftBufferDepth;
const uint64_t kInitialStartTime = 0;
const uint64_t kDuration = kDefaultTimeScale;
const uint64_t kSize = 20000;
const uint64_t kRepeat = 6;
AddSegments(kInitialStartTime, kDuration, kSize, kRepeat);
const uint64_t first_s_element_end_time =
kInitialStartTime + kDuration * (kRepeat + 1);
// Big enough gap so first S element should not be there.
const uint64_t gap_s_element_start_time =
first_s_element_end_time +
(kTimeShiftBufferDepth + 1) * kDefaultTimeScale;
const uint64_t kSecondSElementRepeat = 9;
static_assert(
kSecondSElementRepeat < static_cast<uint64_t>(kTimeShiftBufferDepth),
"second_s_element_repeat_must_be_less_than_time_shift_buffer_depth");
AddSegments(gap_s_element_start_time, kDuration, kSize,
kSecondSElementRepeat);
std::string expected_s_element =
base::StringPrintf(kSElementTemplate, gap_s_element_start_time, kDuration,
kSecondSElementRepeat);
const int kExpectedRemovedSegments = kRepeat + 1;
EXPECT_THAT(
representation_->GetXml().get(),
XmlNodeEqual(ExpectedXml(
expected_s_element, kDefaultStartNumber + kExpectedRemovedSegments)));
}
// Check if startNumber is working correctly.
TEST_F(TimeShiftBufferDepthTest, ManySegments) {
const int kTimeShiftBufferDepth = 1;
mutable_mpd_options()->mpd_params.time_shift_buffer_depth =
kTimeShiftBufferDepth;
const uint64_t kInitialStartTime = 0;
const uint64_t kDuration = kDefaultTimeScale;
const uint64_t kSize = 20000;
const uint64_t kRepeat = 10000;
const uint64_t kTotalNumSegments = kRepeat + 1;
AddSegments(kInitialStartTime, kDuration, kSize, kRepeat);
const int kExpectedSegmentsLeft = kTimeShiftBufferDepth + 1;
const int kExpectedSegmentsRepeat = kExpectedSegmentsLeft - 1;
const int kExpectedRemovedSegments =
kTotalNumSegments - kExpectedSegmentsLeft;
std::string expected_s_element = base::StringPrintf(
kSElementTemplate, kExpectedRemovedSegments * kDuration, kDuration,
static_cast<uint64_t>(kExpectedSegmentsRepeat));
EXPECT_THAT(
representation_->GetXml().get(),
XmlNodeEqual(ExpectedXml(
expected_s_element, kDefaultStartNumber + kExpectedRemovedSegments)));
}
} // namespace shaka
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