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Merge pull request #18380 from calixteman/avoid_dbl_ml_queries

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[Editor] Avoid to query ML engine several times for the same image
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calixteman 2024-07-05 17:44:31 +02:00 • committed by GitHub
commit e777ae2258
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1 changed files with 40 additions and 31 deletions
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71
src/display/editor/stamp.js
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@ -36,6 +36,8 @@ class StampEditor extends AnnotationEditor {
#canvas = null;
#hasMLBeenQueried = false;
#observer = null;
#resizeTimeoutId = null;
@ -423,6 +425,42 @@ class StampEditor extends AnnotationEditor {
return bitmap;
}
async #mlGuessAltText(bitmap, width, height) {
if (this.#hasMLBeenQueried) {
return;
}
this.#hasMLBeenQueried = true;
if (!this._uiManager.hasMLManager || this.hasAltText()) {
return;
}
const offscreen = new OffscreenCanvas(width, height);
const ctx = offscreen.getContext("2d", { willReadFrequently: true });
ctx.drawImage(
bitmap,
0,
0,
bitmap.width,
bitmap.height,
0,
0,
width,
height
);
const response = await this._uiManager.mlGuess({
service: "image-to-text",
request: {
data: ctx.getImageData(0, 0, width, height).data,
width,
height,
channels: 4,
},
});
const altText = response?.output || "";
if (this.parent && altText && !this.hasAltText()) {
this.altTextData = { altText, decorative: false };
}
}
#drawBitmap(width, height) {
width = Math.ceil(width);
height = Math.ceil(height);
@ -436,37 +474,8 @@ class StampEditor extends AnnotationEditor {
? this.#bitmap
: this.#scaleBitmap(width, height);
if (this._uiManager.hasMLManager && !this.hasAltText()) {
const offscreen = new OffscreenCanvas(width, height);
const ctx = offscreen.getContext("2d");
ctx.drawImage(
bitmap,
0,
0,
bitmap.width,
bitmap.height,
0,
0,
width,
height
);
this._uiManager
.mlGuess({
service: "image-to-text",
request: {
data: ctx.getImageData(0, 0, width, height).data,
width,
height,
channels: 4,
},
})
.then(response => {
const altText = response?.output || "";
if (this.parent && altText && !this.hasAltText()) {
this.altTextData = { altText, decorative: false };
}
});
}
this.#mlGuessAltText(bitmap, width, height);
const ctx = canvas.getContext("2d");
ctx.filter = this._uiManager.hcmFilter;
ctx.drawImage(