gramps
480ead0fc7
Refactor MediaVideoSource onto IMediaFrameSource (Key/FrameAvailable/Completed/ StartAsync/StopAsync, renaming Start->StartAsync, FrameReady->FrameAvailable), behavior preserved. Add MediaVideoSourceManager: app-wide decode-session owner refcounted by MediaPath with Func<string,IMediaFrameSource?> factory seam, Acquire/Release/ReleaseAll/GetLatestFrame, coalescing each file's frames onto the UI dispatcher onto one shared WriteableBitmap; MediaFailed + PreviewBitmapChanged. Mirrors ScreenCaptureManager (screen-capture session ownership + dispatcher coalescing), per the codebase precedent and derivative-work rule. Tests: MediaVideoSourceManagerTests (5 unit + 1 integration: single shared bitmap, coalesce-to-latest); MediaVideoSourceTests updated for renames. 10/10 media tests pass, build 0 warnings. Docs (TASKS/HANDOFF/ai.md) updated.
22 lines
783 B
C#
22 lines
783 B
C#
namespace ytLive.Services;
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/// <summary>
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/// TASK 21: a media file decoder exposed to <see cref="MediaVideoSourceManager"/>.
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/// Mirrors <c>IScreenCaptureSource</c>/<c>ICameraFrameSource</c> so the manager
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/// (and tests) treat a local video file like any other frame source: start/stop
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/// and a per-frame <see cref="FrameAvailable"/> event consumers coalesce.
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/// </summary>
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public interface IMediaFrameSource : IDisposable
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{
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string Key { get; }
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/// <summary>Raised (on a worker thread) for each decoded frame.</summary>
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event Action<VideoFrame>? FrameAvailable;
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/// <summary>Raised when the file finishes decoding (natural EOF).</summary>
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event Action? Completed;
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Task StartAsync(CancellationToken cancellationToken = default);
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Task StopAsync();
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}
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