Not for submission. fastSeek prototype.

media/filters/pipeline_controller.h

 // Copyright 2016 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.
 
 #ifndef MEDIA_FILTERS_PIPELINE_CONTROLLER_H_
 #define MEDIA_FILTERS_PIPELINE_CONTROLLER_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "media/base/media_export.h"
 #include "media/base/pipeline.h"
 #include "media/base/renderer.h"
+#include "media/base/renderer.h"
+#include "media/base/stream_position.h"
 
 namespace media {
 
 class Demuxer;
 
 // PipelineController wraps a Pipeline to expose the one-at-a-time operations
 // (Seek(), Suspend(), and Resume()) with a simpler API. Internally it tracks
 // pending operations and dispatches them when possible. Duplicate requests
 // (such as seeking twice to the same time) may be elided.
 //
@@ skipping 44 matching lines @@
   // The remaining parameters are just passed directly to pipeline_.Start().
   void Start(Demuxer* demuxer,
              Pipeline::Client* client,
              bool is_streaming,
              bool is_static);
 
   // Request a seek to |time|. If |time_updated| is true, then the eventual
   // |seeked_cb| callback will also have |time_updated| set to true; it
   // indicates that the seek was requested by Blink and a time update is
   // expected so that Blink can fire the seeked event.
-  void Seek(base::TimeDelta time, bool time_updated);
+  void Seek(StreamPosition position, bool time_updated);
 
   // Request that |pipeline_| be suspended. This is a no-op if |pipeline_| has
   // been suspended.
   void Suspend();
 
   // Request that |pipeline_| be resumed. This is a no-op if |pipeline_| has not
   // been suspended.
   void Resume();
 
   // Returns true if the current state is stable. This means that |state_| is
@@ skipping 51 matching lines @@
 
   // Indicates that a seek has occurred. When set, a seeked callback will be
   // issued at the next stable state.
   bool pending_seeked_cb_ = false;
 
   // Indicates that time has been changed by a seek, which will be reported at
   // the next seeked callback.
   bool pending_time_updated_ = false;
 
   // The target time of the active seek; valid while SEEKING or RESUMING.
-  base::TimeDelta seek_time_;
+  StreamPosition seek_position_;
 
   // Target state which we will work to achieve. |pending_seek_time_| is only
   // valid when |pending_seek_| is true.
   bool pending_seek_ = false;
-  base::TimeDelta pending_seek_time_;
+  StreamPosition pending_seek_position_;
   bool pending_suspend_ = false;
   bool pending_resume_ = false;
 
   base::ThreadChecker thread_checker_;
   base::WeakPtrFactory<PipelineController> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PipelineController);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_PIPELINE_CONTROLLER_H_