Revert 70267 - Refactor PipelineImpl to use CompositeFilter to manage Filter ...

media/base/pipeline_impl.h

Index: media/base/pipeline_impl.h
===================================================================
--- media/base/pipeline_impl.h	(revision 70274)
+++ media/base/pipeline_impl.h	(working copy)
@@ -18,7 +18,6 @@
 #include "base/thread.h"
 #include "base/time.h"
 #include "media/base/clock.h"
-#include "media/base/composite_filter.h"
 #include "media/base/filter_host.h"
 #include "media/base/pipeline.h"
 
@@ -120,9 +119,6 @@
   // is used by the constructor, and the Stop() method.
   void ResetState();
 
-  // Updates |state_|. All state transitions should use this call.
-  void set_state(State next_state);
-
   // Simple method used to make sure the pipeline is running normally.
   bool IsPipelineOk();
 
@@ -357,6 +353,12 @@
   // Member that tracks the current state.
   State state_;
 
+  // For kPausing, kSeeking and kStarting, we need to track how many filters
+  // have completed transitioning to the destination state.  When
+  // |remaining_transitions_| reaches 0 the pipeline can transition out
+  // of the current state.
+  size_t remaining_transitions_;
+
   // For kSeeking we need to remember where we're seeking between filter
   // replies.
   base::TimeDelta seek_timestamp_;
@@ -386,14 +388,20 @@
   scoped_ptr<PipelineCallback> error_callback_;
   scoped_ptr<PipelineCallback> network_callback_;
 
-  // Reference to the filter(s) that constitute the pipeline.
-  scoped_refptr<Filter> pipeline_filter_;
+  // Vector of our filters and map maintaining the relationship between the
+  // FilterType and the filter itself.
+  typedef std::vector<scoped_refptr<Filter> > FilterVector;
+  FilterVector filters_;
 
   // Renderer references used for setting the volume and determining
   // when playback has finished.
   scoped_refptr<AudioRenderer> audio_renderer_;
   scoped_refptr<VideoRenderer> video_renderer_;
 
+  // Vector of threads owned by the pipeline and being used by filters.
+  typedef std::vector<base::Thread*> FilterThreadVector;
+  FilterThreadVector filter_threads_;
+
   // Helper class that stores filter references during pipeline
   // initialization.
   class PipelineInitState;