media/blink/new_session_cdm_result_promise.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_BLINK_NEW_SESSION_CDM_RESULT_PROMISE_H_
   6 #define MEDIA_BLINK_NEW_SESSION_CDM_RESULT_PROMISE_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "media/base/cdm_promise.h"
  12 #include "media/base/media_export.h"
  13 #include "media/base/media_keys.h"
  14 #include "third_party/WebKit/public/platform/WebContentDecryptionModuleResult.h"
  15
  16 namespace media {
  17
  18 typedef base::Callback<blink::WebContentDecryptionModuleResult::SessionStatus(
  19     const std::string& session_id)> SessionInitializedCB;
  20
  21 // Special class for resolving a new session promise. Resolving a new session
  22 // promise returns the session ID (as a string), but the blink promise needs
  23 // to get passed a SessionStatus. This class converts the session id to a
  24 // SessionStatus by calling |new_session_created_cb|.
  25 class MEDIA_EXPORT NewSessionCdmResultPromise
  26     : public CdmPromiseTemplate<std::string> {
  27  public:
  28   NewSessionCdmResultPromise(
  29       const blink::WebContentDecryptionModuleResult& result,
  30       const std::string& uma_name,
  31       const SessionInitializedCB& new_session_created_cb);
  32   ~NewSessionCdmResultPromise() override;
  33
  34   // CdmPromiseTemplate<T> implementation.
  35   void resolve(const std::string& session_id) override;
  36   void reject(MediaKeys::Exception exception_code,
  37               uint32 system_code,
  38               const std::string& error_message) override;
  39
  40  private:
  41   blink::WebContentDecryptionModuleResult web_cdm_result_;
  42
  43   // UMA name to report result to.
  44   std::string uma_name_;
  45
  46   // Called on resolve() to convert the session ID into a SessionStatus to
  47   // be reported to blink.
  48   SessionInitializedCB new_session_created_cb_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(NewSessionCdmResultPromise);
  51 };
  52
  53 }  // namespace media
  54
  55 #endif  // MEDIA_BLINK_NEW_SESSION_CDM_RESULT_PROMISE_H_