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Fix AdaptationSet switching signaling 

Current mechanism of using AdaptationSet @group is not spec compliant.

The spec compliant mechanism is to use supplemental descriptor with
schemeIdUri: urn:mpeg:dash:adaptation-set-switching:2016 as specified
in ISO/IEC 23009-1:2014/Amd.4:2016.

Fixes #156

Change-Id: I4d97648547a23315ba9c09dcadb14e18c99a45fc
This commit is contained in:
Kongqun Yang 2016-12-13 15:48:54 -08:00 committed by KongQun Yang
parent 7a4a40acb8
commit af0904e428
10 changed files with 136 additions and 117 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
packager/app/test/packager_test.py
View File

@ -404,6 +404,19 @@ class PackagerAppTest(unittest.TestCase):
self._AssertStreamInfo(self.output[0], 'is_encrypted: true')
self._AssertStreamInfo(self.output[1], 'is_encrypted: true')
@unittest.skipUnless(test_env.has_aes_flags, 'Requires AES credentials.')
def testWidevineEncryptionWithAesAndDashIfIopWithMultFiles(self):
flags = self._GetFlags(widevine_encryption=True, dash_if_iop=True)
flags += ['--aes_signing_key=' + test_env.options.aes_signing_key,
'--aes_signing_iv=' + test_env.options.aes_signing_iv]
self.packager.Package(
self._GetStreams(['audio', 'video'],
test_files=['bear-1280x720.mp4', 'bear-640x360.mp4',
'bear-320x180.mp4']), flags)
with open(self.mpd_output, 'rb') as f:
print f.read()
# TODO(kqyang): Add some validations.
@unittest.skipUnless(test_env.has_aes_flags, 'Requires AES credentials.')
def testKeyRotationWithAes(self):
flags = self._GetFlags(widevine_encryption=True, key_rotation=True)

35
packager/mpd/base/dash_iop_mpd_notifier.cc
View File

@ -15,8 +15,6 @@ namespace shaka {
namespace {
const int kStartingGroupId = 1;
// The easiest way to check whether two protobufs are equal, is to compare the
// serialized version.
bool ProtectedContentEq(
@ -50,8 +48,7 @@ DashIopMpdNotifier::DashIopMpdNotifier(
mpd_builder_(new MpdBuilder(dash_profile == kLiveProfile
? MpdBuilder::kDynamic
: MpdBuilder::kStatic,
mpd_options)),
next_group_id_(kStartingGroupId) {
mpd_options)) {
DCHECK(dash_profile == kLiveProfile || dash_profile == kOnDemandProfile);
for (size_t i = 0; i < base_urls.size(); ++i)
mpd_builder_->AddBaseUrl(base_urls[i]);
@ -91,7 +88,7 @@ bool DashIopMpdNotifier::NotifyNewContainer(const MediaInfo& media_info,
representation_id_to_adaptation_set_[representation->id()] = adaptation_set;
SetGroupId(key, adaptation_set);
SetAdaptationSetSwitching(key, adaptation_set);
*container_id = representation->id();
DCHECK(!ContainsKey(representation_map_, representation->id()));
@ -197,16 +194,18 @@ AdaptationSet* DashIopMpdNotifier::GetAdaptationSetForMediaInfo(
}
// Get all the UUIDs of the AdaptationSet. If another AdaptationSet has the
// same UUIDs then those should be groupable.
void DashIopMpdNotifier::SetGroupId(const std::string& key,
AdaptationSet* adaptation_set) {
if (adaptation_set->Group() >= 0) // @group already assigned.
// same UUIDs then those are switchable.
void DashIopMpdNotifier::SetAdaptationSetSwitching(
const std::string& key,
AdaptationSet* adaptation_set) {
// This adaptation set is already visited.
if (!adaptation_set->adaptation_set_switching_ids().empty())
return;
ProtectedContentMap::const_iterator protected_content_it =
protected_content_map_.find(adaptation_set->id());
// Clear contents should be in one AdaptationSet, so no need to assign
// @group.
// Clear contents should be in one AdaptationSet and may not be switchable
// with encrypted contents.
if (protected_content_it == protected_content_map_.end()) {
DVLOG(1) << "No content protection set for AdaptationSet@id="
<< adaptation_set->id();
@ -237,21 +236,15 @@ void DashIopMpdNotifier::SetGroupId(const std::string& key,
protected_content_map_[loop_adaptation_set_id];
if (static_cast<int>(adaptation_set_uuids.size()) !=
loop_protected_content.content_protection_entry().size()) {
// Different number of UUIDs, cannot be grouped.
// Different number of UUIDs, may not be switchable.
continue;
}
if (adaptation_set_uuids == GetUUIDs(loop_protected_content)) {
AdaptationSet& uuid_match_adaptation_set = **adaptation_set_it;
// They match. These AdaptationSets can be in the same group. Break out.
if (uuid_match_adaptation_set.Group() >= 0) {
adaptation_set->SetGroup(uuid_match_adaptation_set.Group());
} else {
const int group_id = next_group_id_++;
uuid_match_adaptation_set.SetGroup(group_id);
adaptation_set->SetGroup(group_id);
}
break;
// They match. These AdaptationSets are switchable.
uuid_match_adaptation_set.AddAdaptationSetSwitching(adaptation_set->id());
adaptation_set->AddAdaptationSetSwitching(uuid_match_adaptation_set.id());
}
}
}

10
packager/mpd/base/dash_iop_mpd_notifier.h
View File

@ -73,9 +73,10 @@ class DashIopMpdNotifier : public MpdNotifier {
AdaptationSet* GetAdaptationSetForMediaInfo(const std::string& key,
const MediaInfo& media_info);
// Sets a group id for |adaptation_set| if applicable.
// If a group ID is already assigned, then this returns immediately.
void SetGroupId(const std::string& key, AdaptationSet* adaptation_set);
// Sets adaptation set switching. If adaptation set switching is already
// set, then this returns immediately.
void SetAdaptationSetSwitching(const std::string& key,
AdaptationSet* adaptation_set);
// Helper function to get a new AdaptationSet; registers the values
// to the fields (maps) of the instance.
@ -104,9 +105,6 @@ class DashIopMpdNotifier : public MpdNotifier {
std::unique_ptr<MpdBuilder> mpd_builder_;
base::Lock lock_;
// Next group ID to use for AdapationSets that can be grouped.
int next_group_id_;
// Maps Representation ID to AdaptationSet. This is for updating the PSSH.
std::map<uint32_t, AdaptationSet*> representation_id_to_adaptation_set_;
};

83
packager/mpd/base/dash_iop_mpd_notifier_unittest.cc
View File

@ -18,9 +18,11 @@ namespace shaka {
using ::testing::_;
using ::testing::Eq;
using ::testing::ElementsAre;
using ::testing::InSequence;
using ::testing::Return;
using ::testing::StrEq;
using ::testing::UnorderedElementsAre;
namespace {
@ -37,7 +39,6 @@ const char kValidMediaInfo[] =
"container_type: 1\n";
const uint32_t kDefaultAdaptationSetId = 0u;
const uint32_t kDefaultRepresentationId = 1u;
const int kDefaultGroupId = -1;
bool ElementEqual(const Element& lhs, const Element& rhs) {
const bool all_equal_except_sublement_check =
@ -102,8 +103,6 @@ class DashIopMpdNotifierTest
void SetUp() override {
ASSERT_TRUE(base::CreateTemporaryFile(&temp_file_path_));
output_path_ = temp_file_path_.AsUTF8Unsafe();
ON_CALL(*default_mock_adaptation_set_, Group())
.WillByDefault(Return(kDefaultGroupId));
}
void TearDown() override {
@ -218,7 +217,7 @@ TEST_P(DashIopMpdNotifierTest, NotifyNewTextContainer) {
// Verify VOD NotifyNewContainer() operation works with different
// MediaInfo::ProtectedContent.
// Two AdaptationSets should be created.
// Different DRM so they won't be grouped.
// AdaptationSets with different DRM won't be switchable.
TEST_P(DashIopMpdNotifierTest,
NotifyNewContainersWithDifferentProtectedContent) {
DashIopMpdNotifier notifier(dash_profile(), empty_mpd_option_,
@ -295,11 +294,6 @@ TEST_P(DashIopMpdNotifierTest,
std::unique_ptr<MockAdaptationSet> hd_adaptation_set(
new MockAdaptationSet(kHdAdaptationSetId));
ON_CALL(*sd_adaptation_set, Group()).WillByDefault(Return(kDefaultGroupId));
ON_CALL(*hd_adaptation_set, Group()).WillByDefault(Return(kDefaultGroupId));
EXPECT_CALL(*sd_adaptation_set, SetGroup(_)).Times(0);
EXPECT_CALL(*hd_adaptation_set, SetGroup(_)).Times(0);
const uint32_t kSdRepresentation = 4u;
const uint32_t kHdRepresentation = 5u;
std::unique_ptr<MockRepresentation> sd_representation(
@ -336,6 +330,9 @@ TEST_P(DashIopMpdNotifierTest,
ConvertToMediaInfo(kSdProtectedContent), &unused_container_id));
EXPECT_TRUE(notifier.NotifyNewContainer(
ConvertToMediaInfo(kHdProtectedContent), &unused_container_id));
EXPECT_THAT(sd_adaptation_set->adaptation_set_switching_ids(), ElementsAre());
EXPECT_THAT(hd_adaptation_set->adaptation_set_switching_ids(), ElementsAre());
}
// Verify VOD NotifyNewContainer() operation works with same
@ -410,9 +407,6 @@ TEST_P(DashIopMpdNotifierTest, NotifyNewContainersWithSameProtectedContent) {
std::unique_ptr<MockRepresentation> hd_representation(
new MockRepresentation(kHdRepresentation));
// No reason to set @group if there is only one AdaptationSet.
EXPECT_CALL(*default_mock_adaptation_set_, SetGroup(_)).Times(0);
InSequence in_sequence;
EXPECT_CALL(*mock_mpd_builder, AddAdaptationSet(_))
.WillOnce(Return(default_mock_adaptation_set_.get()));
@ -440,6 +434,10 @@ TEST_P(DashIopMpdNotifierTest, NotifyNewContainersWithSameProtectedContent) {
ConvertToMediaInfo(kSdProtectedContent), &unused_container_id));
EXPECT_TRUE(notifier.NotifyNewContainer(
ConvertToMediaInfo(kHdProtectedContent), &unused_container_id));
// No adaptation set switching if there is only one AdaptationSet.
EXPECT_THAT(default_mock_adaptation_set_->adaptation_set_switching_ids(),
ElementsAre());
}
// AddContentProtection() should not work and should always return false.
@ -466,17 +464,16 @@ TEST_P(DashIopMpdNotifierTest, AddContentProtection) {
}
// Default Key IDs are different but if the content protection UUIDs match, then
// they can be in the same group.
// the AdaptationSet they belong to should be switchable.
// This is a long test.
// Basically this
// 1. Add an SD protected content. This should make an AdaptationSet.
// 2. Add an HD protected content. This should make another AdaptationSet that
// is different from the SD version. Both SD and HD should have the same
// group ID assigned.
// is different from the SD version. SD AdaptationSet and HD AdaptationSet
// should be switchable.
// 3. Add a 4k protected content. This should also make a new AdaptationSet.
// The group ID should also match the SD and HD (but this takes a slightly
// different path).
TEST_P(DashIopMpdNotifierTest, SetGroup) {
// It should be switchable with SD/HD AdaptationSet.
TEST_P(DashIopMpdNotifierTest, SetAdaptationSetSwitching) {
DashIopMpdNotifier notifier(dash_profile(), empty_mpd_option_,
empty_base_urls_, output_path_);
std::unique_ptr<MockMpdBuilder> mock_mpd_builder(
@ -530,9 +527,6 @@ TEST_P(DashIopMpdNotifierTest, SetGroup) {
std::unique_ptr<MockAdaptationSet> hd_adaptation_set(
new MockAdaptationSet(kHdAdaptationSetId));
ON_CALL(*sd_adaptation_set, Group()).WillByDefault(Return(kDefaultGroupId));
ON_CALL(*hd_adaptation_set, Group()).WillByDefault(Return(kDefaultGroupId));
const uint32_t kSdRepresentation = 4u;
const uint32_t kHdRepresentation = 5u;
std::unique_ptr<MockRepresentation> sd_representation(
@ -553,11 +547,6 @@ TEST_P(DashIopMpdNotifierTest, SetGroup) {
EXPECT_CALL(*hd_adaptation_set, AddRepresentation(_))
.WillOnce(Return(hd_representation.get()));
// Both AdaptationSets' groups should be set to the same value.
const int kExpectedGroupId = 1;
EXPECT_CALL(*sd_adaptation_set, SetGroup(kExpectedGroupId));
EXPECT_CALL(*hd_adaptation_set, SetGroup(kExpectedGroupId));
// This is not very nice but we need it for settings expectations later.
MockMpdBuilder* mock_mpd_builder_raw = mock_mpd_builder.get();
uint32_t unused_container_id;
@ -567,12 +556,13 @@ TEST_P(DashIopMpdNotifierTest, SetGroup) {
EXPECT_TRUE(notifier.NotifyNewContainer(
ConvertToMediaInfo(kHdProtectedContent), &unused_container_id));
// Now that the group IDs are set Group() returns kExpectedGroupId.
ON_CALL(*sd_adaptation_set, Group()).WillByDefault(Return(kExpectedGroupId));
ON_CALL(*hd_adaptation_set, Group()).WillByDefault(Return(kExpectedGroupId));
EXPECT_THAT(sd_adaptation_set->adaptation_set_switching_ids(),
ElementsAre(kHdAdaptationSetId));
EXPECT_THAT(hd_adaptation_set->adaptation_set_switching_ids(),
ElementsAre(kSdAdaptationSetId));
// Add another content that has the same protected content and make sure that
// it gets added to the existing group.
// adaptation set switching is set correctly.
const char k4kProtectedContent[] =
"video_info {\n"
" codec: 'avc1'\n"
@ -596,8 +586,6 @@ TEST_P(DashIopMpdNotifierTest, SetGroup) {
const uint32_t k4kAdaptationSetId = 4000u;
std::unique_ptr<MockAdaptationSet> fourk_adaptation_set(
new MockAdaptationSet(k4kAdaptationSetId));
ON_CALL(*fourk_adaptation_set, Group())
.WillByDefault(Return(kDefaultGroupId));
const uint32_t k4kRepresentationId = 4001u;
std::unique_ptr<MockRepresentation> fourk_representation(
@ -609,16 +597,21 @@ TEST_P(DashIopMpdNotifierTest, SetGroup) {
EXPECT_CALL(*fourk_adaptation_set, AddRepresentation(_))
.WillOnce(Return(fourk_representation.get()));
// Same group ID should be set.
EXPECT_CALL(*fourk_adaptation_set, SetGroup(kExpectedGroupId));
EXPECT_TRUE(notifier.NotifyNewContainer(
ConvertToMediaInfo(k4kProtectedContent), &unused_container_id));
EXPECT_THAT(sd_adaptation_set->adaptation_set_switching_ids(),
UnorderedElementsAre(kHdAdaptationSetId, k4kAdaptationSetId));
EXPECT_THAT(hd_adaptation_set->adaptation_set_switching_ids(),
UnorderedElementsAre(kSdAdaptationSetId, k4kAdaptationSetId));
EXPECT_THAT(fourk_adaptation_set->adaptation_set_switching_ids(),
ElementsAre(kSdAdaptationSetId, kHdAdaptationSetId));
}
// Even if the UUIDs match, video and audio AdaptationSets should not be grouped
// together.
TEST_P(DashIopMpdNotifierTest, DoNotSetGroupIfContentTypesDifferent) {
// Even if the UUIDs match, video and audio AdaptationSets should not be
// switchable.
TEST_P(DashIopMpdNotifierTest,
DoNotSetAdaptationSetSwitchingIfContentTypesDifferent) {
DashIopMpdNotifier notifier(dash_profile(), empty_mpd_option_,
empty_base_urls_, output_path_);
std::unique_ptr<MockMpdBuilder> mock_mpd_builder(
@ -671,15 +664,6 @@ TEST_P(DashIopMpdNotifierTest, DoNotSetGroupIfContentTypesDifferent) {
std::unique_ptr<MockAdaptationSet> audio_adaptation_set(
new MockAdaptationSet(kAudioAdaptationSetId));
ON_CALL(*video_adaptation_set, Group())
.WillByDefault(Return(kDefaultGroupId));
ON_CALL(*audio_adaptation_set, Group())
.WillByDefault(Return(kDefaultGroupId));
// Both AdaptationSets' groups should NOT be set.
EXPECT_CALL(*video_adaptation_set, SetGroup(_)).Times(0);
EXPECT_CALL(*audio_adaptation_set, SetGroup(_)).Times(0);
const uint32_t kVideoRepresentation = 8u;
const uint32_t kAudioRepresentation = 9u;
std::unique_ptr<MockRepresentation> video_representation(
@ -708,6 +692,11 @@ TEST_P(DashIopMpdNotifierTest, DoNotSetGroupIfContentTypesDifferent) {
ConvertToMediaInfo(kVideoContent), &unused_container_id));
EXPECT_TRUE(notifier.NotifyNewContainer(
ConvertToMediaInfo(kAudioContent), &unused_container_id));
EXPECT_THAT(video_adaptation_set->adaptation_set_switching_ids(),
ElementsAre());
EXPECT_THAT(audio_adaptation_set->adaptation_set_switching_ids(),
ElementsAre());
}
TEST_P(DashIopMpdNotifierTest, UpdateEncryption) {

3
packager/mpd/base/mock_mpd_builder.h
View File

@ -41,9 +41,6 @@ class MockAdaptationSet : public AdaptationSet {
MOCK_METHOD1(AddRole, void(AdaptationSet::Role role));
MOCK_METHOD1(ForceSetSegmentAlignment, void(bool segment_alignment));
MOCK_METHOD1(SetGroup, void(int group_number));
MOCK_CONST_METHOD0(Group, int());
private:
// Only for constructing the super class. Not used for testing.
base::AtomicSequenceNumber sequence_counter_;

26
packager/mpd/base/mpd_builder.cc
View File

@ -40,8 +40,6 @@ using xml::AdaptationSetXmlNode;
namespace {
const int kAdaptationSetGroupNotSet = -1;
AdaptationSet::Role MediaInfoTextTypeToRole(
MediaInfo::TextInfo::TextType type) {
switch (type) {
@ -682,7 +680,6 @@ AdaptationSet::AdaptationSet(uint32_t adaptation_set_id,
lang_(lang),
mpd_options_(mpd_options),
mpd_type_(mpd_type),
group_(kAdaptationSetGroupNotSet),
segments_aligned_(kSegmentAlignmentUnknown),
force_set_segment_alignment_(false) {
DCHECK(counter);
@ -808,13 +805,22 @@ xml::scoped_xml_ptr<xmlNode> AdaptationSet::GetXml() {
if (picture_aspect_ratio_.size() == 1)
adaptation_set.SetStringAttribute("par", *picture_aspect_ratio_.begin());
if (group_ >= 0)
adaptation_set.SetIntegerAttribute("group", group_);
if (!adaptation_set.AddContentProtectionElements(
content_protection_elements_)) {
return xml::scoped_xml_ptr<xmlNode>();
}
std::string switching_ids;
for (uint32_t id : adaptation_set_switching_ids_) {
if (!switching_ids.empty())
switching_ids += ',';
switching_ids += base::UintToString(id);
}
if (!switching_ids.empty()) {
adaptation_set.AddSupplementalProperty(
"urn:mpeg:dash:adaptation-set-switching:2016", switching_ids);
}
for (AdaptationSet::Role role : roles_)
adaptation_set.AddRoleElement("urn:mpeg:dash:role:2011", RoleToText(role));
@ -840,12 +846,8 @@ void AdaptationSet::ForceSetSegmentAlignment(bool segment_alignment) {
force_set_segment_alignment_ = true;
}
void AdaptationSet::SetGroup(int group_number) {
group_ = group_number;
}
int AdaptationSet::Group() const {
return group_;
void AdaptationSet::AddAdaptationSetSwitching(uint32_t adaptation_set_id) {
adaptation_set_switching_ids_.push_back(adaptation_set_id);
}
// Check segmentAlignment for Live here. Storing all start_time and duration

21
packager/mpd/base/mpd_builder.h
View File

@ -232,15 +232,14 @@ class AdaptationSet {
/// attribute.
virtual void ForceSetSegmentAlignment(bool segment_alignment);
/// Sets the AdaptationSet@group attribute.
/// Passing a negative value to this method will unset the attribute.
/// Note that group=0 is a special group, as mentioned in the DASH MPD
/// specification.
/// @param group_number is the value of AdaptatoinSet@group.
virtual void SetGroup(int group_number);
/// Adds the id of the adaptation set this adaptation set can switch to.
/// @param adaptation_set_id is the id of the switchable adaptation set.
void AddAdaptationSetSwitching(uint32_t adaptation_set_id);
/// @return Returns the value for group. If not set, returns a negative value.
virtual int Group() const;
/// @return the ids of the adaptation sets this adaptation set can switch to.
const std::vector<uint32_t>& adaptation_set_switching_ids() const {
return adaptation_set_switching_ids_;
}
// Must be unique in the Period.
uint32_t id() const { return id_; }
@ -348,10 +347,8 @@ class AdaptationSet {
const MpdOptions& mpd_options_;
const MpdBuilder::MpdType mpd_type_;
// The group attribute for the AdaptationSet. If the value is negative,
// no group number is specified.
// Note that group 0 is a special group number.
int group_;
// The ids of the adaptation sets this adaptation set can switch to.
std::vector<uint32_t> adaptation_set_switching_ids_;
// Video widths and heights of Representations. Note that this is a set; if
// there is only 1 resolution, then @width & @height should be set, otherwise

48
packager/mpd/base/mpd_builder_unittest.cc
View File

@ -404,23 +404,39 @@ class TimeShiftBufferDepthTest : public SegmentTemplateTest {
}
};
// Verify that AdaptationSet@group can be set and unset.
TEST_F(CommonMpdBuilderTest, SetAdaptationSetGroup) {
base::AtomicSequenceNumber sequence_counter;
auto adaptation_set =
CreateAdaptationSet(kAnyAdaptationSetId, "", MpdOptions(),
MpdBuilder::kStatic, &sequence_counter);
adaptation_set->SetGroup(1);
TEST_F(CommonMpdBuilderTest, AddAdaptationSetSwitching) {
MpdBuilder mpd_builder(MpdBuilder::kStatic, MpdOptions());
AdaptationSet* adaptation_set = mpd_builder.AddAdaptationSet("");
adaptation_set->AddAdaptationSetSwitching(1);
adaptation_set->AddAdaptationSetSwitching(2);
adaptation_set->AddAdaptationSetSwitching(8);
xml::scoped_xml_ptr<xmlNode> xml_with_group(adaptation_set->GetXml());
EXPECT_NO_FATAL_FAILURE(
ExpectAttributeEqString("group", "1", xml_with_group.get()));
// Unset by passing a negative value.
adaptation_set->SetGroup(-1);
xml::scoped_xml_ptr<xmlNode> xml_without_group(adaptation_set->GetXml());
EXPECT_NO_FATAL_FAILURE(
ExpectAttributeNotSet("group", xml_without_group.get()));
xml::scoped_xml_ptr<xmlNode> adaptation_set_xml(adaptation_set->GetXml());
// The empty contentType is sort of a side effect of being able to generate an
// MPD without adding any Representations.
const char kExpectedOutput[] =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<MPD xmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
" xmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
" xsi:schemaLocation=\"urn:mpeg:dash:schema:mpd:2011 DASH-MPD.xsd\"\n"
" minBufferTime=\"PT2S\" type=\"static\"\n"
" profiles=\"urn:mpeg:dash:profile:isoff-on-demand:2011\"\n"
" mediaPresentationDuration=\"PT0S\">\n"
" <Period id=\"0\">\n"
" <AdaptationSet id=\"0\" contentType=\"\">\n"
" <SupplementalProperty "
"schemeIdUri=\"urn:mpeg:dash:adaptation-set-switching:2016\" "
"value=\"1,2,8\"/>\n"
" </AdaptationSet>\n"
" </Period>\n"
"</MPD>";
std::string mpd_output;
EXPECT_TRUE(mpd_builder.ToString(&mpd_output));
ASSERT_TRUE(ValidateMpdSchema(mpd_output));
EXPECT_TRUE(XmlEqual(kExpectedOutput, mpd_output))
<< "Expected " << kExpectedOutput << std::endl
<< "Actual: " << mpd_output;
}
// Verify that Representation::Init() works with all "required" fields of

9
packager/mpd/base/xml/xml_node.cc
View File

@ -166,6 +166,15 @@ bool RepresentationBaseXmlNode::AddContentProtectionElements(
return true;
}
void RepresentationBaseXmlNode::AddSupplementalProperty(
const std::string& scheme_id_uri,
const std::string& value) {
XmlNode supplemental_property("SupplementalProperty");
supplemental_property.SetStringAttribute("schemeIdUri", scheme_id_uri);
supplemental_property.SetStringAttribute("value", value);
AddChild(supplemental_property.PassScopedPtr());
}
bool RepresentationBaseXmlNode::AddContentProtectionElement(
const ContentProtectionElement& content_protection_element) {
XmlNode content_protection_node("ContentProtection");

5
packager/mpd/base/xml/xml_node.h
View File

@ -100,6 +100,11 @@ class RepresentationBaseXmlNode : public XmlNode {
bool AddContentProtectionElements(
const std::list<ContentProtectionElement>& content_protection_elements);
/// @param scheme_id_uri is content of the schemeIdUri attribute.
/// @param value is the content of value attribute.
void AddSupplementalProperty(const std::string& scheme_id_uri,
const std::string& value);
protected:
explicit RepresentationBaseXmlNode(const char* name);