Switch to double for time calculations using playback rate.

media/renderers/renderer_impl.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/renderers/renderer_impl.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
@@ skipping 17 matching lines @@
 RendererImpl::RendererImpl(
     const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
     scoped_ptr<AudioRenderer> audio_renderer,
     scoped_ptr<VideoRenderer> video_renderer)
     : state_(STATE_UNINITIALIZED),
       task_runner_(task_runner),
       audio_renderer_(audio_renderer.Pass()),
       video_renderer_(video_renderer.Pass()),
       time_source_(NULL),
       time_ticking_(false),
-      playback_rate_(0),
+      playback_rate_(0.0),
       audio_buffering_state_(BUFFERING_HAVE_NOTHING),
       video_buffering_state_(BUFFERING_HAVE_NOTHING),
       audio_ended_(false),
       video_ended_(false),
       cdm_context_(nullptr),
       underflow_disabled_for_testing_(false),
       clockless_video_playback_enabled_for_testing_(false),
       video_underflow_threshold_(
           base::TimeDelta::FromMilliseconds(kDefaultVideoUnderflowThresholdMs)),
       weak_factory_(this) {
@@ skipping 113 matching lines @@
   }
 
   time_source_->SetMediaTime(time);
 
   if (audio_renderer_)
     audio_renderer_->StartPlaying();
   if (video_renderer_)
     video_renderer_->StartPlayingFrom(time);
 }
 
-void RendererImpl::SetPlaybackRate(float playback_rate) {
+void RendererImpl::SetPlaybackRate(double playback_rate) {
   DVLOG(1) << __FUNCTION__ << "(" << playback_rate << ")";
   DCHECK(task_runner_->BelongsToCurrentThread());
 
   // Playback rate changes are only carried out while playing.
   if (state_ != STATE_PLAYING)
     return;
 
   time_source_->SetPlaybackRate(playback_rate);
 
-  const float old_rate = playback_rate_;
+  const double old_rate = playback_rate_;
   playback_rate_ = playback_rate;
   if (!time_ticking_ || !video_renderer_)
     return;
 
   if (old_rate == 0 && playback_rate > 0)
     video_renderer_->OnTimeStateChanged(true);
   else if (old_rate > 0 && playback_rate == 0)
     video_renderer_->OnTimeStateChanged(false);
 }
 
@@ skipping 437 matching lines @@
   }
 
   // After OnError() returns, the pipeline may destroy |this|.
   base::ResetAndReturn(&error_cb_).Run(error);
 
   if (!flush_cb_.is_null())
     base::ResetAndReturn(&flush_cb_).Run();
 }
 
 }  // namespace media