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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 CHROME_BROWSER_MEDIA_DESKTOP_STREAMS_REGISTRY_H_
#define CHROME_BROWSER_MEDIA_DESKTOP_STREAMS_REGISTRY_H_
#include <map>
#include <string>
#include "chrome/browser/media/desktop_media_list.h"
#include "url/gurl.h"
// DesktopStreamsRegistry is used to store accepted desktop media streams for
// Desktop Capture API. Single instance of this class is created per browser in
// MediaCaptureDevicesDispatcher.
class DesktopStreamsRegistry {
public:
DesktopStreamsRegistry();
~DesktopStreamsRegistry();
// Adds new stream to the registry. Called by the implementation of
// desktopCapture.chooseDesktopMedia() API after user has approved access to
// |source| for the |origin|. Returns identifier of the new stream.
std::string RegisterStream(int render_process_id,
int render_view_id,
const GURL& origin,
const content::DesktopMediaID& source,
const std::string& extension_name);
// Validates stream identifier specified in getUserMedia(). Returns null
// DesktopMediaID if the specified |id| is invalid, i.e. wasn't generated
// using RegisterStream() or if it was generated for a different origin.
// Otherwise returns ID of the source and removes it from the registry.
content::DesktopMediaID RequestMediaForStreamId(const std::string& id,
int render_process_id,
int render_view_id,
const GURL& origin,
std::string* extension_name);
private:
// Type used to store list of accepted desktop media streams.
struct ApprovedDesktopMediaStream {
ApprovedDesktopMediaStream();
int render_process_id;
int render_view_id;
GURL origin;
content::DesktopMediaID source;
std::string extension_name;
};
typedef std::map<std::string, ApprovedDesktopMediaStream> StreamsMap;
// Helper function that removes an expired stream from the registry.
void CleanupStream(const std::string& id);
StreamsMap approved_streams_;
DISALLOW_COPY_AND_ASSIGN(DesktopStreamsRegistry);
};
#endif // CHROME_BROWSER_MEDIA_DESKTOP_STREAMS_REGISTRY_H_
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