Add Promises for EME (Chromium side)

media/cdm/ppapi/cdm_adapter.h

 // Copyright 2013 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.
 
 #ifndef MEDIA_CDM_PPAPI_CDM_ADAPTER_H_
 #define MEDIA_CDM_PPAPI_CDM_ADAPTER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 19 matching lines @@
 
 namespace media {
 
 // GetCdmHostFunc implementation.
 void* GetCdmHost(int host_interface_version, void* user_data);
 
 // An adapter class for abstracting away PPAPI interaction and threading for a
 // Content Decryption Module (CDM).
 class CdmAdapter : public pp::Instance,
                    public pp::ContentDecryptor_Private,
-                   public cdm::Host_4 {
+                   public cdm::Host_4,
+                   public cdm::Host_5 {
  public:
   CdmAdapter(PP_Instance instance, pp::Module* module);
   virtual ~CdmAdapter();
 
   // pp::Instance implementation.
   virtual bool Init(uint32_t argc, const char* argn[], const char* argv[]) {
     return true;
   }
 
   // PPP_ContentDecryptor_Private implementation.
   // Note: Results of calls to these methods must be reported through the
   // PPB_ContentDecryptor_Private interface.
   virtual void Initialize(const std::string& key_system) OVERRIDE;
-  virtual void CreateSession(uint32_t session_id,
-                             const std::string& content_type,
-                             pp::VarArrayBuffer init_data) OVERRIDE;
-  virtual void LoadSession(uint32_t session_id,
+  virtual void CreateSession(uint32_t promise_id,
+                             const std::string& init_data_type,
+                             pp::VarArrayBuffer init_data,
+                             PP_SessionType session_type) OVERRIDE;
+  virtual void LoadSession(uint32_t promise_id,
                            const std::string& web_session_id) OVERRIDE;
-  virtual void UpdateSession(uint32_t session_id,
+  virtual void UpdateSession(uint32_t promise_id,
+                             const std::string& web_session_id,
                              pp::VarArrayBuffer response) OVERRIDE;
-  virtual void ReleaseSession(uint32_t session_id) OVERRIDE;
+  virtual void ReleaseSession(uint32_t promise_id,
+                              const std::string& web_session_id) OVERRIDE;
   virtual void Decrypt(
       pp::Buffer_Dev encrypted_buffer,
       const PP_EncryptedBlockInfo& encrypted_block_info) OVERRIDE;
   virtual void InitializeAudioDecoder(
       const PP_AudioDecoderConfig& decoder_config,
       pp::Buffer_Dev extra_data_buffer) OVERRIDE;
   virtual void InitializeVideoDecoder(
       const PP_VideoDecoderConfig& decoder_config,
       pp::Buffer_Dev extra_data_buffer) OVERRIDE;
   virtual void DeinitializeDecoder(PP_DecryptorStreamType decoder_type,
                                    uint32_t request_id) OVERRIDE;
   virtual void ResetDecoder(PP_DecryptorStreamType decoder_type,
                             uint32_t request_id) OVERRIDE;
   virtual void DecryptAndDecode(
       PP_DecryptorStreamType decoder_type,
       pp::Buffer_Dev encrypted_buffer,
       const PP_EncryptedBlockInfo& encrypted_block_info) OVERRIDE;
 
-  // cdm::Host implementation.
-  virtual cdm::Buffer* Allocate(uint32_t capacity) OVERRIDE;
-  virtual void SetTimer(int64_t delay_ms, void* context) OVERRIDE;
+  // cdm::Host_4 implementation.
   virtual double GetCurrentWallTimeInSeconds() OVERRIDE;
   virtual void OnSessionCreated(uint32_t session_id,
                                 const char* web_session_id,
                                 uint32_t web_session_id_length) OVERRIDE;
   virtual void OnSessionMessage(uint32_t session_id,
                                 const char* message,
                                 uint32_t message_length,
                                 const char* destination_url,
                                 uint32_t destination_url_length) OVERRIDE;
   virtual void OnSessionReady(uint32_t session_id) OVERRIDE;
   virtual void OnSessionClosed(uint32_t session_id) OVERRIDE;
   virtual void OnSessionError(uint32_t session_id,
                               cdm::MediaKeyError error_code,
                               uint32_t system_code) OVERRIDE;
-  virtual void SendPlatformChallenge(
-      const char* service_id, uint32_t service_id_length,
-      const char* challenge, uint32_t challenge_length) OVERRIDE;
+
+  // cdm::Host_5 implementation.
+  virtual cdm::Buffer* Allocate(uint32_t capacity) OVERRIDE;
+  virtual void SetTimer(int64_t delay_ms, void* context) OVERRIDE;

[xhwang, 2014/05/29 23:44:38]

These are shared by HOST4 and HOST5?

[jrummell, 2014/05/30 18:04:25]

Correct. I did it this way so that removing support for CDM_4 simply removes the
section above. Rearranged the methods.

+  virtual cdm::Time GetCurrentTime() OVERRIDE;
+  virtual void OnResolveNewSessionPromise(
+      uint32_t promise_id,
+      const char* web_session_id,
+      uint32_t web_session_id_length) OVERRIDE;
+  virtual void OnResolvePromise(uint32_t promise_id) OVERRIDE;
+  virtual void OnRejectPromise(uint32_t promise_id,
+                               cdm::Error error,
+                               uint32_t system_code,
+                               const char* error_message,
+                               uint32_t error_message_length) OVERRIDE;
+  virtual void OnSessionMessage(const char* web_session_id,
+                                uint32_t web_session_id_length,
+                                const char* message,
+                                uint32_t message_length,
+                                const char* destination_url,
+                                uint32_t destination_url_length) OVERRIDE;
+  virtual void OnSessionKeysChange(const char* web_session_id,
+                                   uint32_t web_session_id_length,
+                                   bool has_additional_usable_key);
+  virtual void OnExpirationChange(const char* web_session_id,
+                                  uint32_t web_session_id_length,
+                                  cdm::Time new_expiry_time);
+  virtual void OnSessionReady(const char* web_session_id,
+                              uint32_t web_session_id_length) OVERRIDE;
+  virtual void OnSessionClosed(const char* web_session_id,
+                               uint32_t web_session_id_length) OVERRIDE;
+  virtual void OnSessionError(const char* web_session_id,
+                              uint32_t web_session_id_length,
+                              cdm::Error error,
+                              uint32_t system_code,
+                              const char* error_message,
+                              uint32_t error_message_length) OVERRIDE;
+  virtual void SendPlatformChallenge(const char* service_id,
+                                     uint32_t service_id_length,
+                                     const char* challenge,
+                                     uint32_t challenge_length) OVERRIDE;
   virtual void EnableOutputProtection(
       uint32_t desired_protection_mask) OVERRIDE;
   virtual void QueryOutputProtectionStatus() OVERRIDE;
   virtual void OnDeferredInitializationDone(
       cdm::StreamType stream_type,
       cdm::Status decoder_status) OVERRIDE;
   virtual cdm::FileIO* CreateFileIO(cdm::FileIOClient* client) OVERRIDE;
 
  private:
   // These are reported to UMA server. Do not change the existing values!
   enum OutputProtectionStatus {
     OUTPUT_PROTECTION_QUERIED = 0,
     OUTPUT_PROTECTION_NO_EXTERNAL_LINK = 1,
     OUTPUT_PROTECTION_ALL_EXTERNAL_LINKS_PROTECTED = 2,
     OUTPUT_PROTECTION_MAX = 3
   };
 
   typedef linked_ptr<DecryptedBlockImpl> LinkedDecryptedBlock;
   typedef linked_ptr<VideoFrameImpl> LinkedVideoFrame;
   typedef linked_ptr<AudioFramesImpl> LinkedAudioFrames;
 
+  struct SessionError {
+    SessionError(cdm::Error error,
+                 uint32_t system_code,
+                 std::string error_description);
+    cdm::Error error;
+    uint32_t system_code;
+    std::string error_description;
+  };
+
   bool CreateCdmInstance(const std::string& key_system);
 
   // <code>PPB_ContentDecryptor_Private</code> dispatchers. These are passed to
   // <code>callback_factory_</code> to ensure that calls into
   // <code>PPP_ContentDecryptor_Private</code> are asynchronous.
-  void SendSessionCreatedInternal(int32_t result,
-                                  uint32_t session_id,
-                                  const std::string& web_session_id);
+  void SendPromiseResolvedInternal(int32_t result, uint32_t promise_id);
+  void SendPromiseResolvedWithSessionInternal(
+      int32_t result,
+      uint32_t promise_id,
+      const std::string& web_session_id);
+  void SendPromiseRejectedInternal(int32_t result,
+                                   uint32_t promise_id,
+                                   const SessionError& error);
   void SendSessionMessageInternal(int32_t result,
-                                  uint32_t session_id,
+                                  const std::string& web_session_id,
                                   const std::vector<uint8>& message,
-                                  const std::string& default_url);
-  void SendSessionReadyInternal(int32_t result, uint32_t session_id);
-  void SendSessionClosedInternal(int32_t result, uint32_t session_id);
+                                  const std::string& destination_url);
+  void SendSessionReadyInternal(int32_t result,
+                                const std::string& web_session_id);
+  void SendSessionClosedInternal(int32_t result,
+                                 const std::string& web_session_id);
   void SendSessionErrorInternal(int32_t result,
-                                uint32_t session_id,
-                                cdm::MediaKeyError error_code,
-                                uint32_t system_code);
+                                const std::string& web_session_id,
+                                const SessionError& error);
+  void RejectPromise(uint32_t promise_id,
+                     cdm::Error error,
+                     uint32_t system_code,
+                     const std::string& error_message);
 
   void DeliverBlock(int32_t result,
                     const cdm::Status& status,
                     const LinkedDecryptedBlock& decrypted_block,
                     const PP_DecryptTrackingInfo& tracking_info);
   void DecoderInitializeDone(int32_t result,
                              PP_DecryptorStreamType decoder_type,
                              uint32_t request_id,
                              bool success);
   void DecoderDeinitializeDone(int32_t result,
@@ skipping 66 matching lines @@
   uint32_t deferred_audio_decoder_config_id_;
   bool deferred_initialize_video_decoder_;
   uint32_t deferred_video_decoder_config_id_;
 
   DISALLOW_COPY_AND_ASSIGN(CdmAdapter);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_CDM_PPAPI_CDM_ADAPTER_H_