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// Copyright 2013 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.
#ifndef MEDIA_CAST_CAST_THREAD_H_
#define MEDIA_CAST_CAST_THREAD_H_
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/task_runner.h"
#include "base/time/time.h"
namespace media {
namespace cast {
class CastThread : public base::RefCountedThreadSafe<CastThread> {
public:
// An enumeration of the cast threads.
enum ThreadId {
// The main thread is where the cast system is configured and where timers
// and network IO is performed.
MAIN,
// The audio encoder thread is where all send side audio processing is done,
// primarily encoding but also re-sampling.
AUDIO_ENCODER,
// The audio decoder thread is where all receive side audio processing is
// done, primarily decoding but also error concealment and re-sampling.
AUDIO_DECODER,
// The video encoder thread is where the video encode processing is done.
VIDEO_ENCODER,
// The video decoder thread is where the video decode processing is done.
VIDEO_DECODER,
};
CastThread(scoped_refptr<base::TaskRunner> main_thread_proxy,
scoped_refptr<base::TaskRunner> audio_encode_thread_proxy,
scoped_refptr<base::TaskRunner> audio_decode_thread_proxy,
scoped_refptr<base::TaskRunner> video_encode_thread_proxy,
scoped_refptr<base::TaskRunner> video_decode_thread_proxy);
// These are the same methods in message_loop.h, but are guaranteed to either
// get posted to the MessageLoop if it's still alive, or be deleted otherwise.
// They return true iff the thread existed and the task was posted. Note that
// even if the task is posted, there's no guarantee that it will run, since
// the target thread may already have a Quit message in its queue.
bool PostTask(ThreadId identifier,
const tracked_objects::Location& from_here,
const base::Closure& task);
bool PostDelayedTask(ThreadId identifier,
const tracked_objects::Location& from_here,
const base::Closure& task,
base::TimeDelta delay);
private:
scoped_refptr<base::TaskRunner> GetMessageTaskRunnerForThread(
ThreadId identifier);
scoped_refptr<base::TaskRunner> main_thread_proxy_;
scoped_refptr<base::TaskRunner> audio_encode_thread_proxy_;
scoped_refptr<base::TaskRunner> audio_decode_thread_proxy_;
scoped_refptr<base::TaskRunner> video_encode_thread_proxy_;
scoped_refptr<base::TaskRunner> video_decode_thread_proxy_;
DISALLOW_COPY_AND_ASSIGN(CastThread);
};
} // namespace cast
} // namespace media
#endif // MEDIA_CAST_CAST_THREAD_H_
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