Prepare MediaDrmBridge to work with MediaCodecPlayer

media/base/android/browser_cdm_factory_android.cc

 // Copyright 2014 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.
 
 #include "media/base/android/browser_cdm_factory_android.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/android/media_drm_bridge.h"
+#include "media/base/android/media_drm_proxy.h"
 #include "media/base/media_switches.h"
 #include "third_party/widevine/cdm/widevine_cdm_common.h"
 
 namespace media {
 
-scoped_ptr<BrowserCdm> BrowserCdmFactoryAndroid::CreateBrowserCdm(
+BrowserCdmPtr BrowserCdmFactoryAndroid::CreateBrowserCdm(
     const std::string& key_system,
     bool use_hw_secure_codecs,
     const SessionMessageCB& session_message_cb,
     const SessionClosedCB& session_closed_cb,
     const LegacySessionErrorCB& legacy_session_error_cb,
     const SessionKeysChangeCB& session_keys_change_cb,
     const SessionExpirationUpdateCB& session_expiration_update_cb) {
   if (!MediaDrmBridge::IsKeySystemSupported(key_system)) {
     NOTREACHED() << "Unsupported key system: " << key_system;
-    return scoped_ptr<BrowserCdm>();
+    return BrowserCdmPtr();
   }
 
-  scoped_ptr<MediaDrmBridge> cdm(
-      MediaDrmBridge::Create(key_system, session_message_cb, session_closed_cb,
-                             legacy_session_error_cb, session_keys_change_cb,
-                             session_expiration_update_cb));
-  if (!cdm) {
-    NOTREACHED() << "MediaDrmBridge cannot be created for " << key_system;
-    return scoped_ptr<BrowserCdm>();
+  MediaDrmBridge::SecurityLevel security_level =
+      MediaDrmBridge::SECURITY_LEVEL_NONE;
+
+  if (key_system == kWidevineKeySystem) {
+    security_level = use_hw_secure_codecs ? MediaDrmBridge::SECURITY_LEVEL_1
+                                          : MediaDrmBridge::SECURITY_LEVEL_3;
+  } else if (!use_hw_secure_codecs) {
+    // Assume other key systems require hardware-secure codecs and thus do not
+    // support full compositing.
+    NOTREACHED()
+        << key_system
+        << " may require use_video_overlay_for_embedded_encrypted_video";
+    return scoped_ptr<BrowserCdm, BrowserCdmDeleter>();
   }
 
-  if (key_system == kWidevineKeySystem) {
-    MediaDrmBridge::SecurityLevel security_level =
-        use_hw_secure_codecs ? MediaDrmBridge::SECURITY_LEVEL_1
-                          : MediaDrmBridge::SECURITY_LEVEL_3;
-    if (!cdm->SetSecurityLevel(security_level)) {
-      DVLOG(1) << "failed to set security level " << security_level;
-      return scoped_ptr<BrowserCdm>();
-    }
+  BrowserCdmPtr cdm;
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableMediaThreadForMediaPlayback)) {
+    cdm = BrowserCdmPtr(MediaDrmProxy::Create(
+        key_system, security_level, session_message_cb, session_closed_cb,
+        legacy_session_error_cb, session_keys_change_cb,
+        session_expiration_update_cb));
+
+    if (!cdm)
+      NOTREACHED() << "MediaDrmProxy cannot be created for " << key_system;
   } else {
-    // Assume other key systems require hardware-secure codecs and thus do not
-    // support full compositing.
-    if (!use_hw_secure_codecs) {
-      NOTREACHED()
-          << key_system
-          << " may require use_video_overlay_for_embedded_encrypted_video";
-      return scoped_ptr<BrowserCdm>();
-    }
+    cdm = BrowserCdmPtr(MediaDrmBridge::Create(
+        key_system, security_level, session_message_cb, session_closed_cb,
+        legacy_session_error_cb, session_keys_change_cb,
+        session_expiration_update_cb));
+    if (!cdm)
+      NOTREACHED() << "MediaDrmBridge cannot be created for " << key_system;
   }
 
   return cdm.Pass();
 }
 
 }  // namespace media