gramps
071ec8be0c
Wire the MediaVideoSourceManager into the live pipeline (new partial
ViewModels/MainViewModel.Media.cs mirrors Webcam/Background partials):
readonly _mediaManager assigned in the core ctor (decode at 1920x1080 master,
dispatcher-coalesced preview), OnMediaPreviewBitmapChanged adopts the shared
bitmap onto every IsMediaSource with a matching MediaPath, a
Source { IsMediaSource, MediaPath } case in ResolveOutputFrame feeds
GetLatestFrame, and the manager is disposed on shutdown.
Source.DisplaySource now routes VideoImageSource for MediaSource (Source.cs),
so media previews/canvas show decoded video.
Compositor needs no change: BlitContent UniformToFill-scales any frame to the
element rect. Decoder/manager/seam derived-work mirrors ScreenCaptureManager
(citation in commit for slice-step-3).
Test (one unit for this change, mirroring the live-capture case):
Source_DisplaySource_IsVideoImageSource_WhenMediaSource. 14/14 media +
DisplaySource tests pass, build 0 warnings. Docs (TASKS/HANDOFF/ai.md) updated.
36 lines
1.6 KiB
C#
36 lines
1.6 KiB
C#
using System.Linq;
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using System.Windows.Media.Imaging;
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using ytLive.Models;
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using ytLive.Services;
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namespace ytLive.ViewModels;
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// Media source (TASK 21): decode sessions are owned app-wide by
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// MediaVideoSourceManager, refcounted by MediaPath. Modeled on the Webcam/Background
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// partials: the readonly manager field is assigned in the core constructor, the
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// shared WriteableBitmap published per file is adopted by every media Source whose
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// MediaPath matches, and ResolveOutputFrame feeds the live compositor.
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public partial class MainViewModel
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{
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// Decode resolution: the 1920x1080 master. Media frames are scaled to the
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// element rect by the compositor (UniformToFill), so this is the capture size.
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private const int MediaDecodeWidth = 1920;
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private const int MediaDecodeHeight = 1080;
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private readonly MediaVideoSourceManager _mediaManager;
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// MediaVideoSourceManager publishes one shared WriteableBitmap per file; every
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// media Source pointing at that path picks it up for the preview/canvas.
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private void OnMediaPreviewBitmapChanged(string path, WriteableBitmap bitmap)
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{
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foreach (var source in Scenes.SelectMany(s => s.Elements.OfType<Source>())
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.Where(s => s.IsMediaSource && s.MediaPath == path))
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source.VideoImageSource = bitmap;
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}
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// Called from the encoder error path is out of scope (TASK 21 sees the decoder
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// fail at startup); log to the debug console for now, surfaced via the UI later.
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private static void OnMediaFailed(string path, string message)
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=> System.Diagnostics.Debug.WriteLine($"MediaSource: '{path}' failed: {message}");
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}
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