media_task_runner.h revision 1320f92c476a1ad9d19dba2a48c72b75566198e9
11320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// Copyright 2014 The Chromium Authors. All rights reserved. 21320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// Use of this source code is governed by a BSD-style license that can be 31320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// found in the LICENSE file. 41320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 51320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#ifndef CHROMECAST_MEDIA_CMA_BASE_MEDIA_TASK_RUNNER_H_ 61320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#define CHROMECAST_MEDIA_CMA_BASE_MEDIA_TASK_RUNNER_H_ 71320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 81320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "base/callback.h" 91320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "base/location.h" 101320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "base/macros.h" 111320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "base/memory/ref_counted.h" 121320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "base/time/time.h" 131320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 141320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tuccinamespace chromecast { 151320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tuccinamespace media { 161320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 171320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucciclass MediaTaskRunner 181320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci : public base::RefCountedThreadSafe<MediaTaskRunner> { 191320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci public: 201320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci MediaTaskRunner(); 211320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 221320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci // Post a task with the given media |timestamp|. If |timestamp| is equal to 231320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci // |kNoTimestamp()|, the task is scheduled right away. 241320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci // How the media timestamp is used to schedule the task is an implementation 251320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci // detail of derived classes. 261320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci // Returns true if the task may be run at some point in the future, and false 271320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci // if the task definitely will not be run. 281320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci virtual bool PostMediaTask( 291320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci const tracked_objects::Location& from_here, 301320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci const base::Closure& task, 311320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci base::TimeDelta timestamp) = 0; 321320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 331320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci protected: 341320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci virtual ~MediaTaskRunner(); 351320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci friend class base::RefCountedThreadSafe<MediaTaskRunner>; 361320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 371320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci private: 381320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci DISALLOW_COPY_AND_ASSIGN(MediaTaskRunner); 391320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci}; 401320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 411320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci} // namespace media 421320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci} // namespace chromecast 431320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 441320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#endif // CHROMECAST_MEDIA_CMA_BASE_MEDIA_TASK_RUNNER_H_ 45