media/base/browser_cdm_factory.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_BASE_BROWSER_CDM_FACTORY_H_
   6 #define MEDIA_BASE_BROWSER_CDM_FACTORY_H_
   7
   8 #include <string>
   9
  10 #include "base/macros.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "media/base/browser_cdm.h"
  13 #include "media/base/media_export.h"
  14
  15 namespace media {
  16
  17 class MEDIA_EXPORT BrowserCdmFactory {
  18  public:
  19   BrowserCdmFactory() {}
  20   virtual ~BrowserCdmFactory() {}
  21
  22   virtual scoped_ptr<BrowserCdm> CreateBrowserCdm(
  23       const std::string& key_system,
  24       bool use_secure_surface,
  25       const SessionMessageCB& session_message_cb,
  26       const SessionClosedCB& session_closed_cb,
  27       const LegacySessionErrorCB& legacy_session_error_cb,
  28       const SessionKeysChangeCB& session_keys_change_cb,
  29       const SessionExpirationUpdateCB& session_expiration_update_cb) = 0;
  30
  31  private:
  32   DISALLOW_COPY_AND_ASSIGN(BrowserCdmFactory);
  33 };
  34
  35 // Provides a factory for creating BrowserCdm instances. There is only one
  36 // BrowserCdmFactory per process.
  37 void SetBrowserCdmFactory(BrowserCdmFactory* factory);
  38
  39 // Creates a BrowserCdm for |key_system|. Returns NULL if the CDM cannot be
  40 // created.
  41 // |use_secure_surface| indicates that the CDM should be configured to output
  42 // to a secure surface (for platforms that support it).
  43 // TODO(xhwang): Add ifdef for IPC based CDM.
  44 scoped_ptr<BrowserCdm> MEDIA_EXPORT
  45 CreateBrowserCdm(const std::string& key_system,
  46                  bool use_secure_surface,
  47                  const SessionMessageCB& session_message_cb,
  48                  const SessionClosedCB& session_closed_cb,
  49                  const LegacySessionErrorCB& legacy_session_error_cb,
  50                  const SessionKeysChangeCB& session_keys_change_cb,
  51                  const SessionExpirationUpdateCB& session_expiration_update_cb);
  52
  53 }  // namespace media
  54
  55 #endif  // MEDIA_BASE_BROWSER_CDM_FACTORY_H_