Add Promises for EME (Chromium side)

ppapi/cpp/private/content_decryptor_private.h

 // Copyright (c) 2012 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 PPAPI_CPP_PRIVATE_CONTENT_DECRYPTOR_PRIVATE_H_
 #define PPAPI_CPP_PRIVATE_CONTENT_DECRYPTOR_PRIVATE_H_
 
+#include <string>
+
 #include "ppapi/c/private/pp_content_decryptor.h"
 #include "ppapi/c/private/ppb_content_decryptor_private.h"
 #include "ppapi/c/private/ppp_content_decryptor_private.h"
 
 #include "ppapi/cpp/dev/buffer_dev.h"
 #include "ppapi/cpp/instance_handle.h"
 #include "ppapi/cpp/var.h"
 #include "ppapi/cpp/var_array_buffer.h"
 
 namespace pp {
 
 class Instance;
 
 // TODO(tomfinegan): Remove redundant pp:: usage, and pass VarArrayBuffers as
 // const references.
 
 class ContentDecryptor_Private {
  public:
   explicit ContentDecryptor_Private(Instance* instance);
   virtual ~ContentDecryptor_Private();
 
   // PPP_ContentDecryptor_Private functions exposed as virtual functions
   // for you to override.
   // TODO(tomfinegan): This could be optimized to pass pp::Var instead of
   // strings. The change would allow the CDM wrapper to reuse vars when
   // replying to the browser.
   virtual void Initialize(const std::string& key_system) = 0;
-  virtual void CreateSession(uint32_t session_id,
-                             const std::string& content_type,
-                             pp::VarArrayBuffer init_data) = 0;
-  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) = 0;
+  virtual void LoadSession(uint32_t promise_id,
                            const std::string& web_session_id) = 0;
-  virtual void UpdateSession(uint32_t session_id,
+  virtual void UpdateSession(uint32_t promise_id,
+                             const std::string& web_session_id,
                              pp::VarArrayBuffer response) = 0;
-  virtual void ReleaseSession(uint32_t session_id) = 0;
+  virtual void ReleaseSession(uint32_t promise_id,
+                              const std::string& web_session_id) = 0;
   virtual void Decrypt(pp::Buffer_Dev encrypted_buffer,
                        const PP_EncryptedBlockInfo& encrypted_block_info) = 0;
   virtual void InitializeAudioDecoder(
       const PP_AudioDecoderConfig& decoder_config,
       pp::Buffer_Dev extra_data_resource) = 0;
   virtual void InitializeVideoDecoder(
       const PP_VideoDecoderConfig& decoder_config,
       pp::Buffer_Dev extra_data_resource) = 0;
   virtual void DeinitializeDecoder(PP_DecryptorStreamType decoder_type,
                                    uint32_t request_id) = 0;
   virtual void ResetDecoder(PP_DecryptorStreamType decoder_type,
                             uint32_t request_id) = 0;
   // Null |encrypted_frame| means end-of-stream buffer.
   virtual void DecryptAndDecode(
       PP_DecryptorStreamType decoder_type,
       pp::Buffer_Dev encrypted_buffer,
       const PP_EncryptedBlockInfo& encrypted_block_info) = 0;
 
   // PPB_ContentDecryptor_Private methods for passing data from the decryptor
   // to the browser.
-  void SessionCreated(uint32_t session_id, const std::string& web_session_id);
-  void SessionMessage(uint32_t session_id,
+  void PromiseResolved(uint32_t promise_id);
+  void PromiseResolvedWithSession(uint32_t promise_id,
+                                  const std::string& web_session_id);
+  void PromiseRejected(uint32_t promise_id,
+                       PP_CdmExceptionCode exception_code,
+                       uint32_t system_code,
+                       const std::string& error_description);
+  void SessionMessage(const std::string& web_session_id,
                       pp::VarArrayBuffer message,
                       const std::string& destination_url);
-  void SessionReady(uint32_t session_id);
-  void SessionClosed(uint32_t session_id);
-  void SessionError(uint32_t session_id,
-                    int32_t media_error,
-                    uint32_t system_code);
+  void SessionReady(const std::string& web_session_id);
+  void SessionClosed(const std::string& web_session_id);
+  void SessionError(const std::string& web_session_id,
+                    PP_CdmExceptionCode exception_code,
+                    uint32_t system_code,
+                    const std::string& error_description);
 
   // The plugin must not hold a reference to the encrypted buffer resource
   // provided to Decrypt() when it calls this method. The browser will reuse
   // the buffer in a subsequent Decrypt() call.
   void DeliverBlock(pp::Buffer_Dev decrypted_block,
                     const PP_DecryptedBlockInfo& decrypted_block_info);
 
   void DecoderInitializeDone(PP_DecryptorStreamType decoder_type,
                              uint32_t request_id,
                              bool status);
@@ skipping 14 matching lines @@
   void DeliverSamples(pp::Buffer_Dev audio_frames,
                       const PP_DecryptedSampleInfo& decrypted_sample_info);
 
  private:
   InstanceHandle associated_instance_;
 };
 
 }  // namespace pp
 
 #endif  // PPAPI_CPP_PRIVATE_CONTENT_DECRYPTOR_PRIVATE_H_