blob: e1e38de89cf30792b499fb48692eb66e27d92edf [file] [log] [blame]
// 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.
#include "base/callback.h"
#include "base/memory/ref_counted.h"
namespace media {
class VideoFrame;
namespace content {
// Interface returned by MediaStreamRendererFactory that provides controls for
// the flow of video frame callbacks being made.
// TODO(wjia): remove ref count.
class MediaStreamVideoRenderer
: public base::RefCountedThreadSafe<MediaStreamVideoRenderer> {
typedef base::Callback<void(const scoped_refptr<media::VideoFrame>&)>
// Start to provide video frames to the caller.
virtual void Start() = 0;
// Stop to provide video frames to the caller.
virtual void Stop() = 0;
// Resume to provide video frames to the caller after being paused.
virtual void Resume() = 0;
// Put the provider in pause state and the caller will not receive video
// frames, but the provider might still generate video frames which are
// thrown away.
virtual void Pause() = 0;
friend class base::RefCountedThreadSafe<MediaStreamVideoRenderer>;
virtual ~MediaStreamVideoRenderer() {}
} // namespace content