Merge remote-tracking branch 'origin/dev' into avif-node-mt

README.md

@@ -1,36 +1,42 @@
 # [Squoosh]!
 
-[Squoosh] is an image compression web app that allows you to dive into the advanced options provided
+[Squoosh] is an image compression web app that reduces image sizes through numerous formats.
-by various image compressors.
 
 # API & CLI
 
-Squoosh now has [an API](https://github.com/GoogleChromeLabs/squoosh/tree/dev/libsquoosh) and [a CLI](https://github.com/GoogleChromeLabs/squoosh/tree/dev/cli) that allows you to compress many images at once.
+Squoosh has [an API](https://github.com/GoogleChromeLabs/squoosh/tree/dev/libsquoosh) and [a CLI](https://github.com/GoogleChromeLabs/squoosh/tree/dev/cli) to compress many images at once.
 
 # Privacy
 
-Google Analytics is used to record the following:
+Squoosh does not send your image to a server. All image compression processes locally.
 
-- [Basic visit data](https://support.google.com/analytics/answer/6004245?ref_topic=2919631).
+However, Squoosh utilizes Google Analytics to collect the following:
-- Before and after image size once an image is downloaded. These values are rounded to the nearest
-  kilobyte.
-- If install is available, when Squoosh is installed, and what method was used to install Squoosh.
 
-Image compression is handled locally; no additional data is sent to the server.
+- [Basic visitor data](https://support.google.com/analytics/answer/6004245?ref_topic=2919631).
+- The before and after image size value.
+- If Squoosh PWA, the type of Squoosh installation.
+- If Squoosh PWA, the installation time and date.
 
-# Building locally
+# Developing
 
-Clone the repo, and:
+To develop for Squoosh:
 
+1. Clone the repository
+1. To install node packages, run:
    ```sh
    npm install
+   ```
+1. Then build the app by running:
+   ```sh
    npm run build
    ```
-
+1. After building, start the development server by running:
-You can run the development server with:
-
    ```sh
    npm run dev
    ```
 
+# Contributing
+
+Squoosh is an open-source project that appreciates all community involvement. To contribute to the project, follow the [contribute guide](/CONTRIBUTING.md).
+
 [squoosh]: https://squoosh.app

libsquoosh/README.md

@@ -42,11 +42,19 @@ When an image has been ingested, you can start preprocessing it and encoding it
 await image.decoded; //Wait until the image is decoded before running preprocessors. 
 
 const preprocessOptions = {
+  //When both width and height are specified, the image resized to specified size.
   resize: {
     enabled: true,
     width: 100,
     height: 50,
   }
+  /*
+  //When either width or height is specified, the image resized to specified size keeping aspect ratio.
+  resize: {
+    enabled: true,
+    width: 100,
+  }
+  */
 }
 await image.preprocess(preprocessOptions);
 

libsquoosh/src/auto-optimizer.ts

@@ -2,6 +2,39 @@ import { instantiateEmscriptenWasm } from './emscripten-utils.js';
 
 import visdif from '../../codecs/visdif/visdif.js';
 import visdifWasm from 'asset-url:../../codecs/visdif/visdif.wasm';
+import type ImageData from './image_data';
+
+interface VisDiff {
+  distance: (data: Uint8ClampedArray) => number;
+  delete: () => void;
+}
+
+interface VisdiffConstructor {
+  new (data: Uint8ClampedArray, width: number, height: number): VisDiff;
+}
+
+interface VisDiffModule extends EmscriptenWasm.Module {
+  VisDiff: VisdiffConstructor;
+}
+
+type VisDiffModuleFactory = EmscriptenWasm.ModuleFactory<VisDiffModule>;
+
+interface BinarySearchParams {
+  min?: number;
+  max?: number;
+  epsilon?: number;
+  maxRounds?: number;
+}
+
+interface AutoOptimizeParams extends BinarySearchParams {
+  butteraugliDistanceGoal?: number;
+}
+
+interface AutoOptimizeResult {
+  bitmap: ImageData;
+  binary: Uint8Array;
+  quality: number;
+}
 
 // `measure` is a (async) function that takes exactly one numeric parameter and
 // returns a value. The function is assumed to be monotonic (an increase in `parameter`
@@ -9,9 +42,9 @@ import visdifWasm from 'asset-url:../../codecs/visdif/visdif.wasm';
 // to find `parameter` such that `measure` returns `measureGoal`, within an error
 // of `epsilon`. It will use at most `maxRounds` attempts.
 export async function binarySearch(
-  measureGoal,
+  measureGoal: number,
-  measure,
+  measure: (val: number) => Promise<number>,
-  { min = 0, max = 100, epsilon = 0.1, maxRounds = 6 } = {},
+  { min = 0, max = 100, epsilon = 0.1, maxRounds = 6 }: BinarySearchParams = {},
 ) {
   let parameter = (max - min) / 2 + min;
   let delta = (max - min) / 4;
@@ -33,12 +66,21 @@ export async function binarySearch(
 }
 
 export async function autoOptimize(
-  bitmapIn,
+  bitmapIn: ImageData,
-  encode,
+  encode: (
-  decode,
+    bitmap: ImageData,
-  { butteraugliDistanceGoal = 1.4, ...otherOpts } = {},
+    quality: number,
-) {
+  ) => Promise<Uint8Array> | Uint8Array,
-  const { VisDiff } = await instantiateEmscriptenWasm(visdif, visdifWasm);
+  decode: (binary: Uint8Array) => Promise<ImageData> | ImageData,
+  {
+    butteraugliDistanceGoal = 1.4,
+    ...binarySearchParams
+  }: AutoOptimizeParams = {},
+): Promise<AutoOptimizeResult> {
+  const { VisDiff } = await instantiateEmscriptenWasm(
+    visdif as VisDiffModuleFactory,
+    visdifWasm,
+  );
 
   const comparator = new VisDiff(
     bitmapIn.data,
@@ -46,8 +88,11 @@ export async function autoOptimize(
     bitmapIn.height,
   );
 
-  let bitmapOut;
+  // We're able to do non null assertion because
-  let binaryOut;
+  // we know that binarySearch will set these values
+  let bitmapOut!: ImageData;
+  let binaryOut!: Uint8Array;
+
   // Increasing quality means _decrease_ in Butteraugli distance.
   // `binarySearch` assumes that increasing `parameter` will
   // increase the metric value. So multipliy Butteraugli values by -1.
@@ -58,7 +103,7 @@ export async function autoOptimize(
       bitmapOut = await decode(binaryOut);
       return -1 * comparator.distance(bitmapOut.data);
     },
-    otherOpts,
+    binarySearchParams,
   );
   comparator.delete();
 

libsquoosh/src/worker_pool.js

@@ -64,7 +64,7 @@ export default class WorkerPool {
 
   async _nextWorker() {
     const reader = this.workerQueue.readable.getReader();
-    const { value, done } = await reader.read();
+    const { value } = await reader.read();
     reader.releaseLock();
     return value;
   }

src/client/lazy-app/Compress/Options/Range/index.tsx

@@ -6,10 +6,13 @@ import './custom-els/RangeInput';
 import { linkRef } from 'shared/prerendered-app/util';
 
 interface Props extends preact.JSX.HTMLAttributes {}
-interface State {}
+interface State {
+  textFocused: boolean;
+}
 
 export default class Range extends Component<Props, State> {
   rangeWc?: RangeInputElement;
+  inputEl?: HTMLInputElement;
 
   private onTextInput = (event: Event) => {
     const input = event.target as HTMLInputElement;
@@ -23,10 +26,19 @@ export default class Range extends Component<Props, State> {
     );
   };
 
-  render(props: Props) {
+  private onTextFocus = () => {
+    this.setState({ textFocused: true });
+  };
+
+  private onTextBlur = () => {
+    this.setState({ textFocused: false });
+  };
+
+  render(props: Props, state: State) {
     const { children, ...otherProps } = props;
 
     const { value, min, max, step } = props;
+    const textValue = state.textFocused ? this.inputEl!.value : value;
 
     return (
       <label class={style.range}>
@@ -41,13 +53,16 @@ export default class Range extends Component<Props, State> {
           />
         </div>
         <input
+          ref={linkRef(this, 'inputEl')}
           type="number"
           class={style.textInput}
-          value={value}
+          value={textValue}
           min={min}
           max={max}
           step={step}
           onInput={this.onTextInput}
+          onFocus={this.onTextFocus}
+          onBlur={this.onTextBlur}
         />
       </label>
     );