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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 CONTENT_PUBLIC_BROWSER_DESKTOP_MEDIA_ID_H_
#define CONTENT_PUBLIC_BROWSER_DESKTOP_MEDIA_ID_H_
#include <string>
#include <tuple>
#include "base/basictypes.h"
#include "content/common/content_export.h"
#if defined(USE_AURA)
namespace aura {
class Window;
} // namespace aura
#endif // defined(USE_AURA)
namespace content {
// Type used to identify desktop media sources. It's converted to string and
// stored in MediaStreamRequest::requested_video_device_id.
struct CONTENT_EXPORT DesktopMediaID {
public:
enum Type {
TYPE_NONE,
TYPE_SCREEN,
TYPE_WINDOW,
};
typedef intptr_t Id;
// Represents an "unset" value for either |id| or |aura_id|.
static const Id kNullId = 0;
#if defined(USE_AURA)
// Assigns integer identifier to the |window| and returns its DesktopMediaID.
static DesktopMediaID RegisterAuraWindow(Type type, aura::Window* window);
// Returns the Window that was previously registered using
// RegisterAuraWindow(), else nullptr.
static aura::Window* GetAuraWindowById(const DesktopMediaID& id);
#endif // defined(USE_AURA)
static DesktopMediaID Parse(const std::string& str);
DesktopMediaID() = default;
DesktopMediaID(Type type, Id id)
: type(type),
id(id) {
}
// Operators so that DesktopMediaID can be used with STL containers.
bool operator<(const DesktopMediaID& other) const {
#if defined(USE_AURA)
return std::tie(type, id, aura_id) <
std::tie(other.type, other.id, other.aura_id);
#else
return std::tie(type, id) < std::tie(other.type, other.id);
#endif
}
bool operator==(const DesktopMediaID& other) const {
#if defined(USE_AURA)
return type == other.type && id == other.id && aura_id == other.aura_id;
#else
return type == other.type && id == other.id;
#endif
}
bool is_null() { return type == TYPE_NONE; }
std::string ToString();
Type type = TYPE_NONE;
// The IDs referring to the target native screen or window. |id| will be
// non-null if and only if it refers to a native screen/window. |aura_id|
// will be non-null if and only if it refers to an Aura window. Note that is
// it possible for both of these to be non-null, which means both IDs are
// referring to the same logical window.
Id id = kNullId;
#if defined(USE_AURA)
// TODO(miu): Make this an int, after clean-up for http://crbug.com/513490.
Id aura_id = kNullId;
#endif
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_DESKTOP_MEDIA_ID_H_
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