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       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef MOZILLA_MEDIASTREAMTYPES_h_
       8             : #define MOZILLA_MEDIASTREAMTYPES_h_
       9             : 
      10             : #include "StreamTracks.h" // for TrackID
      11             : 
      12             : namespace mozilla {
      13             : 
      14             : enum MediaStreamGraphEvent : uint32_t {
      15             :   EVENT_FINISHED,
      16             :   EVENT_REMOVED,
      17             :   EVENT_HAS_DIRECT_LISTENERS, // transition from no direct listeners
      18             :   EVENT_HAS_NO_DIRECT_LISTENERS,  // transition to no direct listeners
      19             : };
      20             : 
      21             : // maskable flags, not a simple enumerated value
      22             : enum TrackEventCommand : uint32_t {
      23             :   TRACK_EVENT_NONE = 0x00,
      24             :   TRACK_EVENT_CREATED = 0x01,
      25             :   TRACK_EVENT_ENDED = 0x02,
      26             :   TRACK_EVENT_UNUSED = ~(TRACK_EVENT_ENDED | TRACK_EVENT_CREATED),
      27             : };
      28             : 
      29             : /**
      30             :  * Describes how a track should be disabled.
      31             :  *
      32             :  * ENABLED        Not disabled.
      33             :  * SILENCE_BLACK  Audio data is turned into silence, video frames are made black.
      34             :  * SILENCE_FREEZE Audio data is turned into silence, video freezes at last frame.
      35             :  */
      36             : enum class DisabledTrackMode
      37             : {
      38             :   ENABLED, SILENCE_BLACK, SILENCE_FREEZE
      39             : };
      40             : struct DisabledTrack {
      41           0 :   DisabledTrack(TrackID aTrackID, DisabledTrackMode aMode)
      42           0 :     : mTrackID(aTrackID), mMode(aMode) {}
      43             :   TrackID mTrackID;
      44             :   DisabledTrackMode mMode;
      45             : };
      46             : 
      47             : } // namespace mozilla
      48             : 
      49             : #endif // MOZILLA_MEDIASTREAMTYPES_h_