media: Enable Unified Media Pipeline for MSE and EME on Android

media/base/media.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.
 
 // Contains code that should be used for initializing, or querying the state
 // of the media library as a whole.
 
 #ifndef MEDIA_BASE_MEDIA_H_
 #define MEDIA_BASE_MEDIA_H_
 
 #include "build/build_config.h"
 #include "media/base/media_export.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace media {
 
 // Initializes media libraries (e.g. ffmpeg) as well as CPU specific media
 // features.
 MEDIA_EXPORT void InitializeMediaLibrary();
 
+// Returns whether mojo CDM should be selected at runtime. Note that even when
+// mojo CDM is enabled at compile time, there are cases where we want to choose
+// other CDM types. For example, on Android when we use WebMediaPlayerAndroid,
+// we still want to use ProxyMediaKeys. In the future, when we experiment mojo
+// CDM on desktop, we will choose between mojo CDM and pepper CDM at runtime.
+// TODO(xhwang): Remove this when we use mojo CDM for all remote CDM cases by
+// default.
+MEDIA_EXPORT bool IsMojoCdmEnabled();
+
 #if defined(OS_ANDROID)
 // Tells the media library it has support for OS level decoders. Should only be
 // used for actual decoders (e.g. MediaCodec) and not full-featured players
 // (e.g. MediaPlayer).
 MEDIA_EXPORT void EnablePlatformDecoderSupport();
 MEDIA_EXPORT bool HasPlatformDecoderSupport();
 
 // Indicates if the platform supports Opus or VP9. Determined *ONLY* by the
 // platform version, so does not guarantee that either can actually be played.
 MEDIA_EXPORT bool PlatformHasOpusSupport();
 MEDIA_EXPORT bool PlatformHasVp9Support();
 
 // Returns true if the unified media pipeline is enabled; the pipeline may still
 // not work for all codecs if HasPlatformDecoderSupport() is false. Please see
 // MimeUtil for an exhaustive listing of supported codecs.
 //
 // TODO(dalecurtis): These methods are temporary and should be removed once the
 // unified media pipeline is supported everywhere.  http://crbug.com/580626.
 MEDIA_EXPORT bool IsUnifiedMediaPipelineEnabled();
 

[ddorwin, 2016/03/24 18:05:11]

Do we need a flag so we can selectively enable the new path for MSE separate
from .src=?

[xhwang, 2016/03/24 21:26:04]

OOC, why do you want this?

-// Similar to IsUnifiedMediaPipelineEnabled() but will also return true if
-// MediaCodec is not available (allowing the unified pipeline to take over for
-// cases where existing pipeline has no support). As above, codecs requiring
-// platform support may not be available.
-MEDIA_EXPORT bool IsUnifiedMediaPipelineEnabledForMse();
-
 // Returns whether the platform decoders are available for use.
 // This includes decoders being available on the platform and accessible, such
 // as via the GPU process. Should only be used for actual decoders
 // (e.g. MediaCodec) and not full-featured players (e.g. MediaPlayer).
 MEDIA_EXPORT bool ArePlatformDecodersAvailable();
 #endif
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MEDIA_H_