gecko-dev/dom/media/TrackID.h

27 строки
864 B
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_TRACK_ID_H_
#define MOZILLA_TRACK_ID_H_
namespace mozilla {
/**
* Unique ID for track within a StreamTracks. Tracks from different
* StreamTrackss may have the same ID; this matters when appending
* StreamTrackss, since tracks with the same ID are matched. Only IDs greater
* than 0 are allowed.
*/
typedef int32_t TrackID;
const TrackID TRACK_NONE = 0;
const TrackID TRACK_INVALID = -1;
const TrackID TRACK_ANY = -2;
inline bool IsTrackIDExplicit(const TrackID& aId) { return aId > TRACK_NONE; }
} // namespace mozilla
#endif // MOZILLA_TRACK_ID_H_