93 lines
2.9 KiB
C#
93 lines
2.9 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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#region Support for Time Scale
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#if AVPROVIDEO_BETA_SUPPORT_TIMESCALE
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// Adjust this value to get faster performance but may drop frames.
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// Wait longer to ensure there is enough time for frames to process
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private const float TimeScaleTimeoutMs = 20f;
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private bool _timeScaleIsControlling;
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private double _timeScaleVideoTime;
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private void UpdateTimeScale()
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{
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if (Time.timeScale != 1f || Time.captureFramerate != 0)
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{
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if (_controlInterface.IsPlaying())
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{
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_controlInterface.Pause();
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_timeScaleIsControlling = true;
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_timeScaleVideoTime = _controlInterface.GetCurrentTime();
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}
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if (_timeScaleIsControlling)
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{
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// Progress time
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_timeScaleVideoTime += Time.deltaTime;
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// Handle looping
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if (_controlInterface.IsLooping() && _timeScaleVideoTime >= Info.GetDuration())
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{
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// TODO: really we should seek to (_timeScaleVideoTime % Info.GetDuration())
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_timeScaleVideoTime = 0.0;
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}
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int preSeekFrameCount = TextureProducer.GetTextureFrameCount();
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// Seek to the new time
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{
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double preSeekTime = Control.GetCurrentTime();
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// Seek
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_controlInterface.Seek(_timeScaleVideoTime);
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// Early out, if after the seek the time hasn't changed, the seek was probably too small to go to the next frame.
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// TODO: This behaviour may be different on other platforms (not Windows) and needs more testing.
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if (Mathf.Approximately((float)preSeekTime, (float)_controlInterface.GetCurrentTime()))
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{
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return;
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}
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}
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// Wait for the new frame to arrive
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if (!_controlInterface.WaitForNextFrame(GetDummyCamera(), preSeekFrameCount))
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{
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// If WaitForNextFrame fails (e.g. in android single threaded), we run the below code to asynchronously wait for the frame
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System.DateTime startTime = System.DateTime.Now;
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int lastFrameCount = TextureProducer.GetTextureFrameCount();
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while (_controlInterface != null && (System.DateTime.Now - startTime).TotalMilliseconds < (double)TimeScaleTimeoutMs)
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{
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_playerInterface.Update();
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_playerInterface.Render();
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GetDummyCamera().Render();
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if (lastFrameCount != TextureProducer.GetTextureFrameCount())
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{
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break;
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}
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}
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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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// Restore playback when timeScale becomes 1
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if (_timeScaleIsControlling)
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{
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_controlInterface.Play();
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_timeScaleIsControlling = false;
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}
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}
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}
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#endif
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#endregion // Support for Time Scale
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}
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}
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