media/base/android/browser_cdm_factory_android.cc

   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 #include "media/base/android/browser_cdm_factory_android.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/logging.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "media/base/android/media_drm_bridge.h"
  11 #include "media/base/media_switches.h"
  12 #include "third_party/widevine/cdm/widevine_cdm_common.h"
  13
  14 namespace media {
  15
  16 scoped_ptr<BrowserCdm> BrowserCdmFactoryAndroid::CreateBrowserCdm(
  17     const std::string& key_system,
  18     bool use_hw_secure_codecs,
  19     const SessionMessageCB& session_message_cb,
  20     const SessionClosedCB& session_closed_cb,
  21     const LegacySessionErrorCB& legacy_session_error_cb,
  22     const SessionKeysChangeCB& session_keys_change_cb,
  23     const SessionExpirationUpdateCB& session_expiration_update_cb) {
  24   if (!MediaDrmBridge::IsKeySystemSupported(key_system)) {
  25     NOTREACHED() << "Unsupported key system: " << key_system;
  26     return scoped_ptr<BrowserCdm>();
  27   }
  28
  29   scoped_ptr<MediaDrmBridge> cdm(
  30       MediaDrmBridge::Create(key_system, session_message_cb, session_closed_cb,
  31                              legacy_session_error_cb, session_keys_change_cb,
  32                              session_expiration_update_cb));
  33   if (!cdm) {
  34     NOTREACHED() << "MediaDrmBridge cannot be created for " << key_system;
  35     return scoped_ptr<BrowserCdm>();
  36   }
  37
  38   if (key_system == kWidevineKeySystem) {
  39     MediaDrmBridge::SecurityLevel security_level =
  40         use_hw_secure_codecs ? MediaDrmBridge::SECURITY_LEVEL_1
  41                           : MediaDrmBridge::SECURITY_LEVEL_3;
  42     if (!cdm->SetSecurityLevel(security_level)) {
  43       DVLOG(1) << "failed to set security level " << security_level;
  44       return scoped_ptr<BrowserCdm>();
  45     }
  46   } else {
  47     // Assume other key systems require hardware-secure codecs and thus do not
  48     // support full compositing.
  49     if (!use_hw_secure_codecs) {
  50       NOTREACHED()
  51           << key_system
  52           << " may require use_video_overlay_for_embedded_encrypted_video";
  53       return scoped_ptr<BrowserCdm>();
  54     }
  55   }
  56
  57   return cdm.Pass();
  58 }
  59
  60 }  // namespace media