Enhance AudioSplicer to crossfade marked splice frames.

media/base/audio_timestamp_helper.cc

 // 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.
 
 #include "media/base/audio_timestamp_helper.h"
 
 #include "base/logging.h"
 #include "media/base/buffers.h"
 
 namespace media {
 
 AudioTimestampHelper::AudioTimestampHelper(int samples_per_second)
     : base_timestamp_(kNoTimestamp()),
       frame_count_(0) {
   DCHECK_GT(samples_per_second, 0);
   double fps = samples_per_second;
   microseconds_per_frame_ = base::Time::kMicrosecondsPerSecond / fps;
 }
 
 void AudioTimestampHelper::SetBaseTimestamp(base::TimeDelta base_timestamp) {
   base_timestamp_ = base_timestamp;
   frame_count_ = 0;
 }
 
-base::TimeDelta AudioTimestampHelper::base_timestamp() const {
-  return base_timestamp_;
-}
-
 void AudioTimestampHelper::AddFrames(int frame_count) {
   DCHECK_GE(frame_count, 0);
   DCHECK(base_timestamp_ != kNoTimestamp());
   frame_count_ += frame_count;
 }
 
 base::TimeDelta AudioTimestampHelper::GetTimestamp() const {
   return ComputeTimestamp(frame_count_);
 }
 
@@ skipping 27 matching lines @@
 
 base::TimeDelta AudioTimestampHelper::ComputeTimestamp(
     int64 frame_count) const {
   DCHECK_GE(frame_count, 0);
   DCHECK(base_timestamp_ != kNoTimestamp());
   double frames_us = microseconds_per_frame_ * frame_count;
   return base_timestamp_ + base::TimeDelta::FromMicroseconds(frames_us);
 }
 
 }  // namespace media