299 lines
10 KiB
C#
299 lines
10 KiB
C#
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using UnityEngine;
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//-----------------------------------------------------------------------------
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// Copyright 2015-2022 RenderHeads Ltd. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace RenderHeads.Media.AVProVideo
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{
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public partial class MediaPlayer : MonoBehaviour
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{
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// Event state
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private bool _eventFired_MetaDataReady = false;
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private bool _eventFired_ReadyToPlay = false;
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private bool _eventFired_Started = false;
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private bool _eventFired_FirstFrameReady = false;
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private bool _eventFired_FinishedPlaying = false;
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private bool _eventState_PlaybackBuffering = false;
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private bool _eventState_PlaybackSeeking = false;
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private bool _eventState_PlaybackStalled = false;
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private int _eventState_PreviousWidth = 0;
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private int _eventState_PreviousHeight = 0;
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private int _previousSubtitleIndex = -1;
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private bool _finishedFrameOpenCheck = false;
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private bool _eventState_Paused = false;
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#if UNITY_EDITOR
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public static MediaPlayerLoadEvent InternalMediaLoadedEvent = new MediaPlayerLoadEvent();
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#endif
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private void ResetEvents()
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{
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_eventFired_MetaDataReady = false;
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_eventFired_ReadyToPlay = false;
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_eventFired_Started = false;
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_eventFired_FirstFrameReady = false;
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_eventFired_FinishedPlaying = false;
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_eventState_PlaybackBuffering = false;
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_eventState_PlaybackSeeking = false;
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_eventState_PlaybackStalled = false;
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_eventState_PreviousWidth = 0;
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_eventState_PreviousHeight = 0;
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_previousSubtitleIndex = -1;
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_finishedFrameOpenCheck = false;
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}
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private void CheckAndClearStartedAndFinishedEvents()
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{
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//NOTE: Fixes a bug where the event was being fired immediately, so when a file is opened, the finishedPlaying fired flag gets set but
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//is then set to true immediately afterwards due to the returned value
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_finishedFrameOpenCheck = false;
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if (IsHandleEvent(MediaPlayerEvent.EventType.FinishedPlaying))
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{
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if (FireEventIfPossible(MediaPlayerEvent.EventType.FinishedPlaying, _eventFired_FinishedPlaying))
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{
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_eventFired_FinishedPlaying = !_finishedFrameOpenCheck;
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}
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}
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if (_eventFired_FinishedPlaying &&
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IsHandleEvent(MediaPlayerEvent.EventType.FinishedPlaying) &&
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_controlInterface.IsPlaying() &&
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!_controlInterface.IsFinished())
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{
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bool reset = true;
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// RJT NOTE: Commented out for now as seems over-aggressive and can lead to freeze conditions as seen in: https://github.com/RenderHeads/UnityPlugin-AVProVideo/issues/1692
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// - If we need to reinstate then we'd likely need considerably more tolerance, especially on slower machines
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#if false//UNITY_EDITOR_WIN || (!UNITY_EDITOR && (UNITY_STANDALONE_WIN || UNITY_WSA))
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reset = false;
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if (_infoInterface.HasVideo())
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{
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// Some streaming HLS/Dash content don't provide a frame rate
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if (_infoInterface.GetVideoFrameRate() > 0f)
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{
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// Don't reset if within a frame of the end of the video, important for time > duration workaround
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float secondsPerFrame = 1f / _infoInterface.GetVideoFrameRate();
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if (_infoInterface.GetDuration() - _controlInterface.GetCurrentTime() > secondsPerFrame)
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{
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reset = true;
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}
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}
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else
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{
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// Just check if we're not beyond the duration
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if (_controlInterface.GetCurrentTime() < _infoInterface.GetDuration())
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{
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reset = true;
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}
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}
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}
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else
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{
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// For audio only media just check if we're not beyond the duration
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if (_controlInterface.GetCurrentTime() < _infoInterface.GetDuration())
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{
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reset = true;
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}
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}
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#endif
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if (reset)
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{
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//Debug.Log("Reset");
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_eventFired_FinishedPlaying = false;
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}
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}
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}
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private void HandleOneShotEvents()
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{
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_eventFired_MetaDataReady = FireEventIfPossible(MediaPlayerEvent.EventType.MetaDataReady, _eventFired_MetaDataReady);
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_eventFired_ReadyToPlay = FireEventIfPossible(MediaPlayerEvent.EventType.ReadyToPlay, _eventFired_ReadyToPlay);
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_eventFired_Started = FireEventIfPossible(MediaPlayerEvent.EventType.Started, _eventFired_Started);
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_eventFired_FirstFrameReady = FireEventIfPossible(MediaPlayerEvent.EventType.FirstFrameReady, _eventFired_FirstFrameReady);
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}
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private void HandleRecurringEvents()
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{
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// Subtitle changing
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if (FireEventIfPossible(MediaPlayerEvent.EventType.SubtitleChange, false))
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{
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_previousSubtitleIndex = _subtitlesInterface.GetSubtitleIndex();
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}
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// Resolution changing
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if (FireEventIfPossible(MediaPlayerEvent.EventType.ResolutionChanged, false))
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{
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_eventState_PreviousWidth = _infoInterface.GetVideoWidth();
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_eventState_PreviousHeight = _infoInterface.GetVideoHeight();
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}
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// Stalling
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if (IsHandleEvent(MediaPlayerEvent.EventType.Stalled))
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{
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bool newState = _infoInterface.IsPlaybackStalled();
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if (newState != _eventState_PlaybackStalled)
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{
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_eventState_PlaybackStalled = newState;
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var newEvent = _eventState_PlaybackStalled ? MediaPlayerEvent.EventType.Stalled : MediaPlayerEvent.EventType.Unstalled;
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FireEventIfPossible(newEvent, false);
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}
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}
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// Seeking
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if (IsHandleEvent(MediaPlayerEvent.EventType.StartedSeeking))
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{
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bool newState = _controlInterface.IsSeeking();
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if (newState != _eventState_PlaybackSeeking)
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{
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_eventState_PlaybackSeeking = newState;
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var newEvent = _eventState_PlaybackSeeking ? MediaPlayerEvent.EventType.StartedSeeking : MediaPlayerEvent.EventType.FinishedSeeking;
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FireEventIfPossible(newEvent, false);
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}
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}
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// Buffering
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if (IsHandleEvent(MediaPlayerEvent.EventType.StartedBuffering))
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{
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bool newState = _controlInterface.IsBuffering();
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if (newState != _eventState_PlaybackBuffering)
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{
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_eventState_PlaybackBuffering = newState;
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var newEvent = _eventState_PlaybackBuffering ? MediaPlayerEvent.EventType.StartedBuffering : MediaPlayerEvent.EventType.FinishedBuffering;
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FireEventIfPossible(newEvent, false);
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}
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}
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// Pausing
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if (IsHandleEvent(MediaPlayerEvent.EventType.Paused))
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{
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bool newState = _controlInterface.IsPaused();
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if (newState != _eventState_Paused)
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{
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_eventState_Paused = newState;
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var newEvent = _eventState_Paused ? MediaPlayerEvent.EventType.Paused : MediaPlayerEvent.EventType.Unpaused;
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FireEventIfPossible(newEvent, false);
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}
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}
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}
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private void UpdateEvents()
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{
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if (_controlInterface == null)
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return;
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if (_events == null || !_events.HasListeners())
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return;
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// Reset some event states that can reset during playback
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CheckAndClearStartedAndFinishedEvents();
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// Events that can only fire once
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HandleOneShotEvents();
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// Events that can fire multiple times
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HandleRecurringEvents();
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}
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protected bool IsHandleEvent(MediaPlayerEvent.EventType eventType)
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{
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return ((uint)_eventMask & (1 << (int)eventType)) != 0;
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}
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private bool FireEventIfPossible(MediaPlayerEvent.EventType eventType, bool hasFired)
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{
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if (CanFireEvent(eventType, hasFired))
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{
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#if UNITY_EDITOR
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// Special internal global event, called when media is loaded
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// Currently used by the RecentItem class
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if (eventType == MediaPlayerEvent.EventType.Started)
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{
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string fullPath = GetResolvedFilePath(_mediaPath.Path, _mediaPath.PathType);
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InternalMediaLoadedEvent.Invoke(fullPath);
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}
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#endif
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hasFired = true;
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_events.Invoke(this, eventType, ErrorCode.None);
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}
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return hasFired;
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}
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private bool CanFireEvent(MediaPlayerEvent.EventType et, bool hasFired)
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{
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if (_controlInterface == null)
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return false;
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if (_events == null)
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return false;
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if (hasFired)
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return false;
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if (!IsHandleEvent(et))
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return false;
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bool result = false;
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switch (et)
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{
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case MediaPlayerEvent.EventType.FinishedPlaying:
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result = (!_controlInterface.IsLooping() && _controlInterface.CanPlay() && _controlInterface.IsFinished());
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break;
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case MediaPlayerEvent.EventType.MetaDataReady:
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result = (_controlInterface.HasMetaData());
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break;
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case MediaPlayerEvent.EventType.FirstFrameReady:
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// [MOZ 20/1/21] Removed HasMetaData check as preventing the event from being triggered on (i|mac|tv)OS
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result = (_textureInterface != null && _controlInterface.CanPlay() /*&& _controlInterface.HasMetaData()*/ && _textureInterface.GetTextureFrameCount() > 0);
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break;
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case MediaPlayerEvent.EventType.ReadyToPlay:
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result = (!_controlInterface.IsPlaying() && _controlInterface.CanPlay() && !_autoPlayOnStart);
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break;
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case MediaPlayerEvent.EventType.Started:
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result = (_controlInterface.IsPlaying());
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break;
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case MediaPlayerEvent.EventType.SubtitleChange:
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{
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result = (_previousSubtitleIndex != _subtitlesInterface.GetSubtitleIndex());
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if (!result)
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{
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result = _baseMediaPlayer.InternalIsChangedTextCue();
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}
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break;
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}
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case MediaPlayerEvent.EventType.Stalled:
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result = _infoInterface.IsPlaybackStalled();
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break;
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case MediaPlayerEvent.EventType.Unstalled:
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result = !_infoInterface.IsPlaybackStalled();
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break;
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case MediaPlayerEvent.EventType.StartedSeeking:
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result = _controlInterface.IsSeeking();
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break;
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case MediaPlayerEvent.EventType.FinishedSeeking:
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result = !_controlInterface.IsSeeking();
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break;
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case MediaPlayerEvent.EventType.StartedBuffering:
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result = _controlInterface.IsBuffering();
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break;
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case MediaPlayerEvent.EventType.FinishedBuffering:
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result = !_controlInterface.IsBuffering();
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break;
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case MediaPlayerEvent.EventType.ResolutionChanged:
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result = (_infoInterface != null && (_eventState_PreviousWidth != _infoInterface.GetVideoWidth() || _eventState_PreviousHeight != _infoInterface.GetVideoHeight()));
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break;
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case MediaPlayerEvent.EventType.Paused:
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result = _controlInterface.IsPaused();
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break;
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case MediaPlayerEvent.EventType.Unpaused:
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result = !_controlInterface.IsPaused();
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break;
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default:
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Debug.LogWarning("[AVProVideo] Unhandled event type");
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break;
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}
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return result;
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}
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}
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} // namespace RenderHeads.Media.AVProVideo
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