Switch to double for time calculations using playback rate.

media/base/pipeline.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.
 
 #ifndef MEDIA_BASE_PIPELINE_H_
 #define MEDIA_BASE_PIPELINE_H_
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 126 matching lines @@
   //
   // It is an error to call this method if the pipeline has not started.
   void Seek(base::TimeDelta time, const PipelineStatusCB& seek_cb);
 
   // Returns true if the pipeline has been started via Start().  If IsRunning()
   // returns true, it is expected that Stop() will be called before destroying
   // the pipeline.
   bool IsRunning() const;
 
   // Gets the current playback rate of the pipeline.  When the pipeline is
-  // started, the playback rate will be 0.0f.  A rate of 1.0f indicates
+  // started, the playback rate will be 0.0.  A rate of 1.0 indicates
   // that the pipeline is rendering the media at the standard rate.  Valid
-  // values for playback rate are >= 0.0f.
-  float GetPlaybackRate() const;
+  // values for playback rate are >= 0.0.
+  double GetPlaybackRate() const;
 
-  // Attempt to adjust the playback rate. Setting a playback rate of 0.0f pauses
-  // all rendering of the media.  A rate of 1.0f indicates a normal playback
-  // rate.  Values for the playback rate must be greater than or equal to 0.0f.
+  // Attempt to adjust the playback rate. Setting a playback rate of 0.0 pauses
+  // all rendering of the media.  A rate of 1.0 indicates a normal playback
+  // rate.  Values for the playback rate must be greater than or equal to 0.0.
   //
   // TODO(scherkus): What about maximum rate?  Does HTML5 specify a max?
-  void SetPlaybackRate(float playback_rate);
+  void SetPlaybackRate(double playback_rate);
 
   // Gets the current volume setting being used by the audio renderer.  When
   // the pipeline is started, this value will be 1.0f.  Valid values range
   // from 0.0f to 1.0f.
   float GetVolume() const;
 
   // Attempt to set the volume of the audio renderer.  Valid values for volume
   // range from 0.0f (muted) to 1.0f (full volume).  This value affects all
   // channels proportionately for multi-channel audio streams.
   void SetVolume(float volume);
@@ skipping 70 matching lines @@
   void StartTask();
 
   // Stops and destroys all filters, placing the pipeline in the kStopped state.
   void StopTask(const base::Closure& stop_cb);
 
   // Carries out stopping and destroying all filters, placing the pipeline in
   // the kStopped state.
   void ErrorChangedTask(PipelineStatus error);
 
   // Carries out notifying filters that the playback rate has changed.
-  void PlaybackRateChangedTask(float playback_rate);
+  void PlaybackRateChangedTask(double playback_rate);
 
   // Carries out notifying filters that the volume has changed.
   void VolumeChangedTask(float volume);
 
   // Carries out notifying filters that we are seeking to a new timestamp.
   void SeekTask(base::TimeDelta time, const PipelineStatusCB& seek_cb);
 
   // Carries out setting the |cdm_context| in |renderer_|, and then fires
   // |cdm_attached_cb| with the result. If |renderer_| is null,
   // |cdm_attached_cb| will be fired immediately with true, and |cdm_context|
@@ skipping 56 matching lines @@
 
   // True when AddBufferedTimeRange() has been called more recently than
   // DidLoadingProgress().
   bool did_loading_progress_;
 
   // Current volume level (from 0.0f to 1.0f).  This value is set immediately
   // via SetVolume() and a task is dispatched on the task runner to notify the
   // filters.
   float volume_;
 
-  // Current playback rate (>= 0.0f).  This value is set immediately via
+  // Current playback rate (>= 0.0).  This value is set immediately via
   // SetPlaybackRate() and a task is dispatched on the task runner to notify
   // the filters.
-  float playback_rate_;
+  double playback_rate_;
 
   // Current duration as reported by |demuxer_|.
   base::TimeDelta duration_;
 
   // Status of the pipeline.  Initialized to PIPELINE_OK which indicates that
   // the pipeline is operating correctly. Any other value indicates that the
   // pipeline is stopped or is stopping.  Clients can call the Stop() method to
   // reset the pipeline state, and restore this to PIPELINE_OK.
   PipelineStatus status_;
 
@@ skipping 47 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<Pipeline> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Pipeline);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_PIPELINE_H_