fix(jassub): [PKG-JASSUB-10] release bitmap batches on rendering errors

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Harvey Zhao committed 2026-09-14 15:28:52 +08:00
1 parent 04060aa8b6
commit 7b0e1d156b
22 files changed
+5795 -22

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@@ -42,6 +42,16 @@ protocol or change the historical matching of simultaneous same-target responses
`src/jassub.es.js` owns rendering, media listeners, canvas state, capability checks and worker
messages. Keep this third-party file separate from the adapter's TypeScript migration.
PKG-JASSUB-10 adds `refactor/baselines/jassub-render-patch.json` to the patch chain.
An asynchronous main-thread render owns the entire received ImageBitmap batch.
A finally block closes every bitmap even when resizing, clearing or drawing fails;
the original native rendering exception still escapes. Normal drawing releases the
batch before debug reporting. Synchronous ImageData buffers are not ImageBitmaps
and are not closed. This does not alter Worker messages, async/offscreen defaults,
or resolve the separate Firefox offscreen stall. `jassub-offscreen.test.js` covers
failure positions and the synchronous path; `jassub-render-failure.spec.js` uses
an actual Worker/WASM bitmap, native copies and an intentionally closed bitmap
to verify native draw failure, batch release and a subsequent visible subtitle.
`worker/` contains worker/WASM files; the actual 1.0.0/1.1.0 npm packages do not ship those
files. The local demo explicitly hosts its resources under `docs/assets/jassub/` and selects
fonts in `docs/assets/example/jassub.js`. Do not move or rename those URLs as an internal cleanup.
@@ -4,4 +4,4 @@
* (c) 2017-2026 Harvey Zhao
* Released under the MIT License.
*/
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@@ -4,4 +4,4 @@
* (c) 2017-2026 Harvey Zhao
* Released under the MIT License.
*/
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@@ -564,9 +564,13 @@ const _o = class _o extends EventTarget {
for (const image of e) image.image?.close?.();
return;
}
this._unbusy(), this.debug && (s.IPCTime = Date.now() - s.JSRenderTime), (this._canvasctrl.width !== r || this._canvasctrl.height !== n) && (this._canvasctrl.width = r, this._canvasctrl.height = n, this._verifyColorSpace({ subtitleColorSpace: a })), this._ctx.clearRect(0, 0, this._canvasctrl.width, this._canvasctrl.height);
for (const i of e)
i.image && (t ? (this._ctx.drawImage(i.image, i.x, i.y), i.image.close()) : (this._bufferCanvas.width = i.w, this._bufferCanvas.height = i.h, this._bufferCtx.putImageData(new ImageData(this._fixAlpha(new Uint8ClampedArray(i.image)), i.w, i.h), 0, 0), this._ctx.drawImage(this._bufferCanvas, i.x, i.y)));
try {
this._unbusy(), this.debug && (s.IPCTime = Date.now() - s.JSRenderTime), (this._canvasctrl.width !== r || this._canvasctrl.height !== n) && (this._canvasctrl.width = r, this._canvasctrl.height = n, this._verifyColorSpace({ subtitleColorSpace: a })), this._ctx.clearRect(0, 0, this._canvasctrl.width, this._canvasctrl.height);
for (const i of e)
i.image && (t ? this._ctx.drawImage(i.image, i.x, i.y) : (this._bufferCanvas.width = i.w, this._bufferCanvas.height = i.h, this._bufferCtx.putImageData(new ImageData(this._fixAlpha(new Uint8ClampedArray(i.image)), i.w, i.h), 0, 0), this._ctx.drawImage(this._bufferCanvas, i.x, i.y)));
} finally {
if (t) for (const i of e) i.image?.close();
}
if (this.debug) {
s.JSRenderTime = Date.now() - s.JSRenderTime - s.IPCTime;
let i = 0;
@@ -563,9 +563,13 @@ class o extends EventTarget {
for (const image of e) image.image?.close?.();
return;
}
this._unbusy(), this.debug && (s.IPCTime = Date.now() - s.JSRenderTime), (this._canvasctrl.width !== r || this._canvasctrl.height !== n) && (this._canvasctrl.width = r, this._canvasctrl.height = n, this._verifyColorSpace({ subtitleColorSpace: a })), this._ctx.clearRect(0, 0, this._canvasctrl.width, this._canvasctrl.height);
for (const i of e)
i.image && (t ? (this._ctx.drawImage(i.image, i.x, i.y), i.image.close()) : (this._bufferCanvas.width = i.w, this._bufferCanvas.height = i.h, this._bufferCtx.putImageData(new ImageData(this._fixAlpha(new Uint8ClampedArray(i.image)), i.w, i.h), 0, 0), this._ctx.drawImage(this._bufferCanvas, i.x, i.y)));
try {
this._unbusy(), this.debug && (s.IPCTime = Date.now() - s.JSRenderTime), (this._canvasctrl.width !== r || this._canvasctrl.height !== n) && (this._canvasctrl.width = r, this._canvasctrl.height = n, this._verifyColorSpace({ subtitleColorSpace: a })), this._ctx.clearRect(0, 0, this._canvasctrl.width, this._canvasctrl.height);
for (const i of e)
i.image && (t ? this._ctx.drawImage(i.image, i.x, i.y) : (this._bufferCanvas.width = i.w, this._bufferCanvas.height = i.h, this._bufferCtx.putImageData(new ImageData(this._fixAlpha(new Uint8ClampedArray(i.image)), i.w, i.h), 0, 0), this._ctx.drawImage(this._bufferCanvas, i.x, i.y)));
} finally {
if (t) for (const i of e) i.image?.close();
}
if (this.debug) {
s.JSRenderTime = Date.now() - s.JSRenderTime - s.IPCTime;
let i = 0;