Changed media::Buffer interfaces to use base::TimeDelta.

media/base/buffers.h

 // Copyright (c) 2006-2008 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.
 
 // Defines various types of timestamped media buffers used for transporting
 // data between filters.  Every buffer contains a timestamp in microseconds
 // describing the relative position of the buffer within the media stream, and
 // the duration in microseconds for the length of time the buffer will be
 // rendered.
 //
 // Timestamps are derived directly from the encoded media file and are commonly
 // known as the presentation timestamp (PTS).  Durations are a best-guess and
 // are usually derived from the sample/frame rate of the media file.
 //
 // Due to encoding and transmission errors, it is not guaranteed that timestamps
 // arrive in a monotonically increasing order nor that the next timestamp will
 // be equal to the previous timestamp plus the duration.
 //
 // In the ideal scenario for a 25fps movie, buffers are timestamped as followed:
 //
 //               Buffer0      Buffer1      Buffer2      ...      BufferN
 // Timestamp:        0us      40000us      80000us      ...   (N*40000)us
 // Duration*:    40000us      40000us      40000us      ...       40000us
 //
 //  *25fps = 0.04s per frame = 40000us per frame
 
 #ifndef MEDIA_BASE_BUFFERS_H_
 #define MEDIA_BASE_BUFFERS_H_
 
+#include "base/basictypes.h"
 #include "base/ref_counted.h"
+#include "base/time.h"
 
 namespace media {
 
 class StreamSample : public base::RefCountedThreadSafe<StreamSample> {
  public:
   // Returns the timestamp of this buffer in microseconds.
-  virtual int64 GetTimestamp() const = 0;
+  virtual base::TimeDelta GetTimestamp() const = 0;
 
   // Returns the duration of this buffer in microseconds.
-  virtual int64 GetDuration() const = 0;
+  virtual base::TimeDelta GetDuration() const = 0;
 
   // Sets the timestamp of this buffer in microseconds.
-  virtual void SetTimestamp(int64 timestamp) = 0;
+  virtual void SetTimestamp(const base::TimeDelta& timestamp) = 0;
 
   // Sets the duration of this buffer in microseconds.
-  virtual void SetDuration(int64 duration) = 0;
+  virtual void SetDuration(const base::TimeDelta& duration) = 0;
 
  protected:
   friend class base::RefCountedThreadSafe<StreamSample>;
   virtual ~StreamSample() {}
 };
 
 
 class Buffer : public StreamSample {
  public:
   // Returns a read only pointer to the buffer data.
@@ skipping 116 matching lines @@
  private:
   OwnerType* owner_;
   scoped_refptr<BufferType> buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(AssignableBuffer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_BUFFERS_H_