Correctly generate ContentProtection value for non-cenc protection schemes

Change-Id: Ie5469a7f192cc6167f029befd9cca7f9ab0d1f27

packager/app/test/testdata/bear-640x360-a-cenc-golden.mp4.media_info

@@ -24,4 +24,5 @@ protected_content {
     uuid: "edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"
     pssh: "\000\000\0000pssh\000\000\000\000\355\357\213\251y\326J\316\243\310\'\334\325\035!\355\000\000\000\0201234567890123456"
   }
+  protection_scheme: "cenc"
 }

packager/app/test/testdata/bear-640x360-v-cenc-golden.mp4.media_info

@@ -27,4 +27,5 @@ protected_content {
     uuid: "edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"
     pssh: "\000\000\0000pssh\000\000\000\000\355\357\213\251y\326J\316\243\310\'\334\325\035!\355\000\000\000\0201234567890123456"
   }
+  protection_scheme: "cenc"
 }

packager/media/event/hls_notify_muxer_listener.cc

@@ -26,6 +26,7 @@ HlsNotifyMuxerListener::~HlsNotifyMuxerListener() {}
 
 void HlsNotifyMuxerListener::OnEncryptionInfoReady(
     bool is_initial_encryption_info,
+    FourCC protection_scheme,
     const std::vector<uint8_t>& key_id,
     const std::vector<uint8_t>& iv,
     const std::vector<ProtectionSystemSpecificInfo>& key_system_infos) {

packager/media/event/hls_notify_muxer_listener.h

@@ -32,6 +32,7 @@ class HlsNotifyMuxerListener : public MuxerListener {
   /// @name MuxerListener implementation overrides.
   /// @{
   void OnEncryptionInfoReady(bool is_initial_encryption_info,
+                             FourCC protection_scheme,
                              const std::vector<uint8_t>& key_id,
                              const std::vector<uint8_t>& iv,
                              const std::vector<ProtectionSystemSpecificInfo>&

packager/media/event/hls_notify_muxer_listener_unittest.cc

@@ -95,8 +95,8 @@ TEST_F(HlsNotifyMuxerListenerTest, OnEncryptionInfoReady) {
   EXPECT_CALL(mock_notifier_,
               NotifyEncryptionUpdate(_, key_id, system_id, iv, pssh_data))
       .WillOnce(Return(true));
-  listener_.OnEncryptionInfoReady(kInitialEncryptionInfo, key_id, iv,
+  listener_.OnEncryptionInfoReady(kInitialEncryptionInfo, FOURCC_cbcs, key_id,
-                                  key_system_infos);
+                                  iv, key_system_infos);
 }
 
 TEST_F(HlsNotifyMuxerListenerTest, OnMediaStart) {

packager/media/event/mock_muxer_listener.h

@@ -22,9 +22,10 @@ class MockMuxerListener : public MuxerListener {
   MockMuxerListener();
   ~MockMuxerListener() override;
 
-  MOCK_METHOD4(
+  MOCK_METHOD5(
       OnEncryptionInfoReady,
       void(bool is_initial_encryption_info,
+           FourCC protection_scheme,
            const std::vector<uint8_t>& key_id,
            const std::vector<uint8_t>& iv,
            const std::vector<ProtectionSystemSpecificInfo>& key_system_info));

packager/media/event/mpd_notify_muxer_listener.cc

@@ -30,17 +30,20 @@ MpdNotifyMuxerListener::~MpdNotifyMuxerListener() {}
 
 void MpdNotifyMuxerListener::OnEncryptionInfoReady(
     bool is_initial_encryption_info,
+    FourCC protection_scheme,
     const std::vector<uint8_t>& key_id,
     const std::vector<uint8_t>& iv,
     const std::vector<ProtectionSystemSpecificInfo>& key_system_info) {
   if (is_initial_encryption_info) {
     LOG_IF(WARNING, is_encrypted_)
         << "Updating initial encryption information.";
+    protection_scheme_ = protection_scheme;
     default_key_id_.assign(key_id.begin(), key_id.end());
     key_system_info_ = key_system_info;
     is_encrypted_ = true;
     return;
   }
+  DCHECK_EQ(protection_scheme, protection_scheme_);
 
   for (const ProtectionSystemSpecificInfo& info : key_system_info) {
     std::string drm_uuid = internal::CreateUUIDString(info.system_id());
@@ -67,8 +70,8 @@ void MpdNotifyMuxerListener::OnMediaStart(
   }
 
   if (is_encrypted_) {
-    internal::SetContentProtectionFields(default_key_id_, key_system_info_,
+    internal::SetContentProtectionFields(protection_scheme_, default_key_id_,
-                                         media_info.get());
+                                         key_system_info_, media_info.get());
   }
 
   if (mpd_notifier_->dash_profile() == kLiveProfile) {

packager/media/event/mpd_notify_muxer_listener.h

@@ -34,6 +34,7 @@ class MpdNotifyMuxerListener : public MuxerListener {
   /// @name MuxerListener implementation overrides.
   /// @{
   void OnEncryptionInfoReady(bool is_initial_encryption_info,
+                             FourCC protection_scheme,
                              const std::vector<uint8_t>& key_id,
                              const std::vector<uint8_t>& iv,
                              const std::vector<ProtectionSystemSpecificInfo>&
@@ -71,6 +72,7 @@ class MpdNotifyMuxerListener : public MuxerListener {
 
   bool is_encrypted_;
   // Storage for values passed to OnEncryptionInfoReady().
+  FourCC protection_scheme_;
   std::string default_key_id_;
   std::vector<ProtectionSystemSpecificInfo> key_system_info_;
 

packager/media/event/mpd_notify_muxer_listener_unittest.cc

@@ -158,6 +158,7 @@ TEST_F(MpdNotifyMuxerListenerTest, VodEncryptedContent) {
   const std::string kExpectedMediaInfo =
       std::string(kExpectedDefaultMediaInfo) +
       "protected_content {\n"
+      "  protection_scheme: 'cenc'\n"
       "  content_protection_entry {\n"
       "    uuid: '00010203-0405-0607-0809-0a0b0c0d0e0f'\n"
       "    pssh: '" + std::string(kExpectedDefaultPsshBox) + "'\n"
@@ -168,7 +169,8 @@ TEST_F(MpdNotifyMuxerListenerTest, VodEncryptedContent) {
   EXPECT_CALL(*notifier_, NotifyNewContainer(_, _)).Times(0);
 
   std::vector<uint8_t> iv(kBogusIv, kBogusIv + arraysize(kBogusIv));
-  listener_->OnEncryptionInfoReady(kInitialEncryptionInfo, default_key_id, iv,
+  listener_->OnEncryptionInfoReady(kInitialEncryptionInfo, FOURCC_cenc,
+                                   default_key_id, iv,
                                    GetDefaultKeySystemInfo());
 
   listener_->OnMediaStart(muxer_options, *video_stream_info,
@@ -296,6 +298,7 @@ TEST_F(MpdNotifyMuxerListenerTest, LiveNoKeyRotation) {
       "    uuid: '00010203-0405-0607-0809-0a0b0c0d0e0f'\n"
       "    pssh: \"" + std::string(kExpectedDefaultPsshBox) + "\"\n"
       "  }\n"
+      "  protection_scheme: 'cbcs'\n"
       "}\n";
 
   const uint64_t kStartTime1 = 0u;
@@ -320,7 +323,8 @@ TEST_F(MpdNotifyMuxerListenerTest, LiveNoKeyRotation) {
   EXPECT_CALL(*notifier_, Flush());
 
   std::vector<uint8_t> iv(kBogusIv, kBogusIv + arraysize(kBogusIv));
-  listener_->OnEncryptionInfoReady(kInitialEncryptionInfo, default_key_id, iv,
+  listener_->OnEncryptionInfoReady(kInitialEncryptionInfo, FOURCC_cbcs,
+                                   default_key_id, iv,
                                    GetDefaultKeySystemInfo());
   listener_->OnMediaStart(muxer_options, *video_stream_info,
                           kDefaultReferenceTimeScale,
@@ -359,6 +363,7 @@ TEST_F(MpdNotifyMuxerListenerTest, LiveWithKeyRotation) {
       "container_type: CONTAINER_MP4\n"
       "protected_content {\n"
       "  default_key_id: \"defaultkeyid\"\n"
+      "  protection_scheme: 'cbc1'\n"
       "}\n";
 
   const uint64_t kStartTime1 = 0u;
@@ -383,12 +388,13 @@ TEST_F(MpdNotifyMuxerListenerTest, LiveWithKeyRotation) {
   EXPECT_CALL(*notifier_, Flush());
 
   std::vector<uint8_t> iv(kBogusIv, kBogusIv + arraysize(kBogusIv));
-  listener_->OnEncryptionInfoReady(kInitialEncryptionInfo, default_key_id, iv,
+  listener_->OnEncryptionInfoReady(kInitialEncryptionInfo, FOURCC_cbc1,
+                                   default_key_id, iv,
                                    std::vector<ProtectionSystemSpecificInfo>());
   listener_->OnMediaStart(muxer_options, *video_stream_info,
                           kDefaultReferenceTimeScale,
                           MuxerListener::kContainerMp4);
-  listener_->OnEncryptionInfoReady(kNonInitialEncryptionInfo,
+  listener_->OnEncryptionInfoReady(kNonInitialEncryptionInfo, FOURCC_cbc1,
                                    std::vector<uint8_t>(), iv,
                                    GetDefaultKeySystemInfo());
   listener_->OnNewSegment("", kStartTime1, kDuration1, kSegmentFileSize1);

packager/media/event/muxer_listener.h

@@ -14,6 +14,8 @@
 #include <string>
 #include <vector>
 
+#include "packager/media/base/fourccs.h"
+
 namespace edash_packager {
 namespace media {
 
@@ -48,6 +50,8 @@ class MuxerListener {
   /// @param is_initial_encryption_info is true if this is the first encryption
   ///        info for the media. In general, this flag should always be true for
   ///        non-key-rotated media and should be called only once.
+  /// @param protection_scheme specifies the protection scheme: 'cenc', 'cens',
+  ///        'cbc1', 'cbcs'.
   /// @param key_id is the key ID for the media.  The format should be a vector
   ///        of uint8_t, i.e. not (necessarily) human readable hex string.
   /// @param iv is the initialization vector. For most cases this should be 16
@@ -55,6 +59,7 @@ class MuxerListener {
   ///        implementation.
   virtual void OnEncryptionInfoReady(
       bool is_initial_encryption_info,
+      FourCC protection_scheme,
       const std::vector<uint8_t>& key_id,
       const std::vector<uint8_t>& iv,
       const std::vector<ProtectionSystemSpecificInfo>& key_system_info) = 0;

packager/media/event/muxer_listener_internal.cc

@@ -216,6 +216,7 @@ bool SetVodInformation(bool has_init_range,
 }
 
 void SetContentProtectionFields(
+    FourCC protection_scheme,
     const std::string& default_key_id,
     const std::vector<ProtectionSystemSpecificInfo>& key_system_info,
     MediaInfo* media_info) {
@@ -223,6 +224,10 @@ void SetContentProtectionFields(
   MediaInfo::ProtectedContent* protected_content =
       media_info->mutable_protected_content();
 
+  DCHECK(protection_scheme == FOURCC_cenc || protection_scheme == FOURCC_cbc1 ||
+         protection_scheme == FOURCC_cens || protection_scheme == FOURCC_cbcs);
+  protected_content->set_protection_scheme(FourCCToString(protection_scheme));
+
   if (!default_key_id.empty())
     protected_content->set_default_key_id(default_key_id);
 

packager/media/event/muxer_listener_internal.h

@@ -45,12 +45,15 @@ bool SetVodInformation(bool has_init_range,
                        uint64_t file_size,
                        MediaInfo* media_info);
 
+/// @param protection_scheme specifies the protection scheme: 'cenc', 'cens',
+///        'cbc1', 'cbcs'.
 /// @param default_key_id is the key ID for this media in hex (i.e. non-human
 ///        readable, typically 16 bytes.)
 /// @param key_system_info the key-system specific info for the media.
 /// @param media_info is where the content protection information is stored and
 ///        cannot be null.
 void SetContentProtectionFields(
+    FourCC protection_scheme,
     const std::string& default_key_id,
     const std::vector<ProtectionSystemSpecificInfo>& key_system_info,
     MediaInfo* media_info);

packager/media/event/vod_media_info_dump_muxer_listener.cc

@@ -27,12 +27,14 @@ VodMediaInfoDumpMuxerListener::~VodMediaInfoDumpMuxerListener() {}
 
 void VodMediaInfoDumpMuxerListener::OnEncryptionInfoReady(
     bool is_initial_encryption_info,
+    FourCC protection_scheme,
     const std::vector<uint8_t>& default_key_id,
     const std::vector<uint8_t>& iv,
     const std::vector<ProtectionSystemSpecificInfo>& key_system_info) {
   LOG_IF(WARNING, !is_initial_encryption_info)
       << "Updating (non initial) encryption info is not supported by "
          "this module.";
+  protection_scheme_ = protection_scheme;
   default_key_id_.assign(default_key_id.begin(), default_key_id.end());
   key_system_info_ = key_system_info;
   is_encrypted_ = true;
@@ -55,8 +57,8 @@ void VodMediaInfoDumpMuxerListener::OnMediaStart(
   }
 
   if (is_encrypted_) {
-    internal::SetContentProtectionFields(
+    internal::SetContentProtectionFields(protection_scheme_, default_key_id_,
-        default_key_id_, key_system_info_, media_info_.get());
+                                         key_system_info_, media_info_.get());
   }
 }
 

packager/media/event/vod_media_info_dump_muxer_listener.h

@@ -33,6 +33,7 @@ class VodMediaInfoDumpMuxerListener : public MuxerListener {
   /// @name MuxerListener implementation overrides.
   /// @{
   void OnEncryptionInfoReady(bool is_initial_encryption_info,
+                             FourCC protection_scheme,
                              const std::vector<uint8_t>& default_key_id,
                              const std::vector<uint8_t>& iv,
                              const std::vector<ProtectionSystemSpecificInfo>&
@@ -72,6 +73,7 @@ class VodMediaInfoDumpMuxerListener : public MuxerListener {
 
   bool is_encrypted_;
   // Storage for values passed to OnEncryptionInfoReady().
+  FourCC protection_scheme_;
   std::string default_key_id_;
   std::vector<ProtectionSystemSpecificInfo> key_system_info_;
 

packager/media/event/vod_media_info_dump_muxer_listener_unittest.cc

@@ -11,6 +11,7 @@
 
 #include "packager/base/files/file_util.h"
 #include "packager/base/files/file_path.h"
+#include "packager/media/base/fourccs.h"
 #include "packager/media/base/muxer_options.h"
 #include "packager/media/base/video_stream_info.h"
 #include "packager/media/event/muxer_listener_test_helper.h"
@@ -83,7 +84,7 @@ class VodMediaInfoDumpMuxerListenerTest : public ::testing::Test {
           kBogusDefaultKeyId + arraysize(kBogusDefaultKeyId));
       std::vector<uint8_t> bogus_iv(kBogusIv, kBogusIv + arraysize(kBogusIv));
 
-      listener_->OnEncryptionInfoReady(kInitialEncryptionInfo,
+      listener_->OnEncryptionInfoReady(kInitialEncryptionInfo, FOURCC_cenc,
                                        bogus_default_key_id, bogus_iv,
                                        GetDefaultKeySystemInfo());
     }
@@ -189,6 +190,7 @@ TEST_F(VodMediaInfoDumpMuxerListenerTest, EncryptedStream_Normal) {
       "    pssh: '" + std::string(kExpectedDefaultPsshBox) + "'\n"
       "  }\n"
       "  default_key_id: '_default_key_id_'\n"
+      "  protection_scheme: 'cenc'\n"
       "}\n";
 
   ASSERT_NO_FATAL_FAILURE(ExpectTempFileToEqual(kExpectedProtobufOutput));

packager/media/formats/mp4/key_rotation_fragmenter.cc

@@ -79,10 +79,9 @@ Status KeyRotationFragmenter::PrepareFragmentForEncryption(
   }
 
   if (muxer_listener_) {
-    muxer_listener_->OnEncryptionInfoReady(!kInitialEncryptionInfo,
+    muxer_listener_->OnEncryptionInfoReady(
-                                           encryption_key()->key_id,
+        !kInitialEncryptionInfo, protection_scheme(), encryption_key()->key_id,
-                                           encryption_key()->iv,
+        encryption_key()->iv, encryption_key()->key_system_info);
-                                           encryption_key()->key_system_info);
   }
 
   // Skip the following steps if the current fragment is not going to be

packager/media/formats/mp4/segmenter.cc

@@ -215,7 +215,8 @@ Status Segmenter::Initialize(const std::vector<MediaStream*>& streams,
                                    local_protection_scheme, &description);
       if (muxer_listener_) {
         muxer_listener_->OnEncryptionInfoReady(
-            kInitialEncryptionInfo, encryption_key.key_id, encryption_key.iv,
+            kInitialEncryptionInfo, local_protection_scheme,
+            encryption_key.key_id, encryption_key.iv,
             encryption_key.key_system_info);
       }
 
@@ -251,9 +252,9 @@ Status Segmenter::Initialize(const std::vector<MediaStream*>& streams,
       }
 
       if (muxer_listener_) {
-        muxer_listener_->OnEncryptionInfoReady(kInitialEncryptionInfo,
+        muxer_listener_->OnEncryptionInfoReady(
-                                               encryption_key->key_id,
+            kInitialEncryptionInfo, local_protection_scheme,
-                                               encryption_key->iv,
+            encryption_key->key_id, encryption_key->iv,
             encryption_key->key_system_info);
       }
     }

packager/media/formats/mp4/segmenter.h

@@ -59,7 +59,7 @@ class Segmenter {
   ///        pixels per frame than max_sd_pixels, it is HD, SD otherwise.
   /// @param clear_time specifies clear lead duration in seconds.
   /// @param crypto_period_duration specifies crypto period duration in seconds.
-  /// @param protection_scheme specifies the protection scheme: 'senc', 'sens',
+  /// @param protection_scheme specifies the protection scheme: 'cenc', 'cens',
   ///        'cbc1', 'cbcs'.
   /// @return OK on success, an error status otherwise.
   Status Initialize(const std::vector<MediaStream*>& streams,

packager/media/formats/webm/encryptor.cc

@@ -118,10 +118,9 @@ Status Encryptor::CreateEncryptor(MuxerListener* muxer_listener,
 
   if (muxer_listener) {
     const bool kInitialEncryptionInfo = true;
-    muxer_listener->OnEncryptionInfoReady(kInitialEncryptionInfo,
+    muxer_listener->OnEncryptionInfoReady(
-                                          encryption_key->key_id,
+        kInitialEncryptionInfo, FOURCC_cenc, encryption_key->key_id,
-                                          encryptor->iv(),
+        encryptor->iv(), encryption_key->key_system_info);
-                                          encryption_key->key_system_info);
   }
 
   key_ = encryption_key.Pass();

packager/mpd/base/media_info.proto

@@ -83,6 +83,8 @@ message MediaInfo {
     // The default key ID for the encrypted media.
     optional bytes default_key_id = 1;
     repeated ContentProtectionEntry content_protection_entry = 2;
+    // Specifies the protection scheme: 'cenc', 'cens', 'cbc1', 'cbcs'.
+    optional string protection_scheme = 3 [default = 'cenc'];
   }
 
   // TODO(rkuroiwa): Remove this. <ContentProtection> element that must be added

packager/mpd/base/mpd_utils.cc

@@ -288,7 +288,7 @@ void AddContentProtectionElementsHelperTemplated(
   if (is_mp4_container) {
     ContentProtectionElement mp4_content_protection;
     mp4_content_protection.scheme_id_uri = kEncryptedMp4Scheme;
-    mp4_content_protection.value = kEncryptedMp4Value;
+    mp4_content_protection.value = protected_content.protection_scheme();
     if (!key_id_uuid_format.empty()) {
       mp4_content_protection.additional_attributes["cenc:default_KID"] =
           key_id_uuid_format;

packager/mpd/base/mpd_utils.h

@@ -28,7 +28,6 @@ struct SegmentInfo;
 
 const char kEncryptedMp4Scheme[] = "urn:mpeg:dash:mp4protection:2011";
 const char kPsshElementName[] = "cenc:pssh";
-const char kEncryptedMp4Value[] = "cenc";
 
 bool HasVODOnlyFields(const MediaInfo& media_info);