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// Copyright 2014 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 CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_H_
#define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_H_
#include "base/callback.h"
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "content/common/content_export.h"
#include "content/common/media/media_stream_options.h"
#include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
namespace blink {
class WebMediaStreamTrack;
} // namespace blink
namespace content {
class CONTENT_EXPORT MediaStreamSource
: NON_EXPORTED_BASE(public blink::WebMediaStreamSource::ExtraData) {
public:
typedef base::Callback<void(const blink::WebMediaStreamSource& source)>
SourceStoppedCallback;
typedef base::Callback<void(MediaStreamSource* source,
bool success)> ConstraintsCallback;
// Source constraints key for
// http://dev.w3.org/2011/webrtc/editor/getusermedia.html.
static const char kSourceId[];
MediaStreamSource();
virtual ~MediaStreamSource();
// Returns device information about a source that has been created by a
// JavaScript call to GetUserMedia, e.g., a camera or microphone.
const StreamDeviceInfo& device_info() const {
return device_info_;
}
// Stops the source (by calling DoStopSource()). This sets the
// WebMediaStreamSource::readyState to ended, triggers the |stop_callback_|
// if set. All pointers to this object are invalid after calling this.
void StopSource();
void ResetSourceStoppedCallback() {
DCHECK(!stop_callback_.is_null());
stop_callback_.Reset();
}
protected:
// Called when StopSource is called. It allows derived classes to implement
// its own Stop method.
virtual void DoStopSource() = 0;
// Sets device information about a source that has been created by a
// JavaScript call to GetUserMedia. F.E a camera or microphone.
void SetDeviceInfo(const StreamDeviceInfo& device_info) {
device_info_ = device_info;
}
// Sets a callback that will be triggered when StopSource is called.
void SetStopCallback(const SourceStoppedCallback& stop_callback) {
DCHECK(stop_callback_.is_null());
stop_callback_ = stop_callback;
}
private:
StreamDeviceInfo device_info_;
SourceStoppedCallback stop_callback_;
DISALLOW_COPY_AND_ASSIGN(MediaStreamSource);
};
} // namespace content
#endif // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_H_
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