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Fixed trick play for VLC

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This commit is contained in:
Alex Kim
2024-10-28 21:12:42 +11:00
parent 9ca71dc7fc
commit db20fffeb5
4 changed files with 75 additions and 37 deletions
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35
hooks/useTrickplay.ts
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@@ -1,6 +1,7 @@
// hooks/useTrickplay.ts
import { apiAtom } from "@/providers/JellyfinProvider";
import { ticksToMs } from "@/utils/time";
import { BaseItemDto } from "@jellyfin/sdk/lib/generated-client";
import { useAtom } from "jotai";
import { useCallback, useMemo, useRef, useState } from "react";
@@ -57,6 +58,7 @@ export const useTrickplay = (item: BaseItemDto, enabled = true) => {
: null;
}, [item, enabled]);
// Takes in ticks.
const calculateTrickplayUrl = useCallback(
(progress: number) => {
if (!enabled) {
@@ -74,28 +76,33 @@ export const useTrickplay = (item: BaseItemDto, enabled = true) => {
}
const { data, resolution } = trickplayInfo;
const { Interval, TileWidth, TileHeight } = data;
const { Interval, TileWidth, TileHeight, Width, Height } = data;
if (!Interval || !TileWidth || !TileHeight || !resolution) {
if (
!Interval ||
!TileWidth ||
!TileHeight ||
!resolution ||
!Width ||
!Height
) {
throw new Error("Invalid trickplay data");
}
const currentSecond = Math.max(0, Math.floor(progress / 10000000));
const currentTimeMs = Math.max(0, ticksToMs(progress));
const currentTile = Math.floor(currentTimeMs / Interval);
const cols = TileWidth;
const rows = TileHeight;
const imagesPerTile = cols * rows;
const imageIndex = Math.floor(currentSecond / (Interval / 1000));
const tileIndex = Math.floor(imageIndex / imagesPerTile);
const tileSize = TileWidth * TileHeight;
const tileOffset = currentTile % tileSize;
const index = Math.floor(currentTile / tileSize);
const positionInTile = imageIndex % imagesPerTile;
const rowInTile = Math.floor(positionInTile / cols);
const colInTile = positionInTile % cols;
const tileOffsetX = tileOffset % TileWidth;
const tileOffsetY = Math.floor(tileOffset / TileWidth);
const newTrickPlayUrl = {
x: rowInTile,
y: colInTile,
url: `${api.basePath}/Videos/${item.Id}/Trickplay/${resolution}/${tileIndex}.jpg?api_key=${api.accessToken}`,
x: tileOffsetX,
y: tileOffsetY,
url: `${api.basePath}/Videos/${item.Id}/Trickplay/${resolution}/${index}.jpg?api_key=${api.accessToken}`,
};
setTrickPlayUrl(newTrickPlayUrl);