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media/base/clock_impl.cc

 // Copyright (c) 2009 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 "base/logging.h"
+#include "media/base/buffers.h"
 #include "media/base/clock_impl.h"
 
 namespace media {
 
 ClockImpl::ClockImpl(TimeProvider* time_provider)
     : time_provider_(time_provider),
       playing_(false),
       playback_rate_(1.0f) {
 }
 
 ClockImpl::~ClockImpl() {
 }
 
 base::TimeDelta ClockImpl::Play() {
   DCHECK(!playing_);
   reference_ = time_provider_();
   playing_ = true;
   return media_time_;
 }
 
 base::TimeDelta ClockImpl::Pause() {
   DCHECK(playing_);
   // Save our new accumulated amount of media time.
   media_time_ = Elapsed();
   playing_ = false;
   return media_time_;
 }
 
 void ClockImpl::SetTime(const base::TimeDelta& time) {
+  if (time == StreamSample::kInvalidTimestamp) {
+    NOTREACHED();
+    return;
+  }
   if (playing_) {
     reference_ = time_provider_();
   }
   media_time_ = time;
 }
 
 void ClockImpl::SetPlaybackRate(float playback_rate) {
   if (playing_) {
     base::Time time = time_provider_();
     media_time_ = ElapsedViaProvidedTime(time);
@@ skipping 11 matching lines @@
 
 base::TimeDelta ClockImpl::ElapsedViaProvidedTime(
     const base::Time& time) const {
   // TODO(scherkus): floating point badness scaling time by playback rate.
   int64 now_us = (time - reference_).InMicroseconds();
   now_us = static_cast<int64>(now_us * playback_rate_);
   return media_time_ + base::TimeDelta::FromMicroseconds(now_us);
 }
 
 }  // namespace media