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node-webpmux

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node-webpmux - npm Package Compare versions

Comparing version
3.1.4
 to
3.1.5
+1
-1
package.json
{
"name": "node-webpmux",
"version": "3.1.4",
"version": "3.1.5",
"description": "A pure Javascript/WebAssembly re-implementation of webpmux",

@@ -5,0 +5,0 @@ "main": "webp.js",

+9
-6
README.md

@@ -97,5 +97,5 @@ # node-webpmux

##### `async .replaceFrame(frame, source)`
##### `async .replaceFrame(frameIndex, source)`
Replaces a frame in the animation with another image from `source`. All other frame settings are preserved.
* `frame`: Which frame to replace. Frame indexes are 0-based.
* `frameIndex`: Which frame to replace. Frame indexes are 0-based.
* `source`: If this is a string, the frame is loaded from disk. If this is a Buffer, the frame is loaded from there.

@@ -113,6 +113,7 @@

##### `async .setImageData(buf, { width = 0, height = 0, preset = 0, quality = 75, exact = false, lossless = 0, method = 4, advanced = undefined })`
##### `async .setImageData(buffer, { width = 0, height = 0, preset = 0, quality = 75, exact = false, lossless = 0, method = 4, advanced = undefined })`
Encode `buf` as a new WebP using the provided settings and replace the image pixel data with it.<br />
This preserves EXIF/ICCP/XMP if present.<br />
Use this for non-animations.<br />
* `buffer`: A Buffer object with the raw pixels in RGBA order.<br />
Options:

@@ -231,10 +232,12 @@ * `width`/`height`<br />

##### `async .getFrameData(frame)`
##### `async .getFrameData(frameIndex)`
Get the raw RGBA pixel data for a specific frame.<br />
Use this for animations.<br />
Otherwise identical to `.getImageData()`.
* `frameIndex`: Which frame to get. Frame indexes are 0-based.<br />
Otherwise identical to `.getImageData()`
##### `async .setFrameData(frame, buffer, { width = 0, height = 0, preset = 0, quality = 75, exact = false, lossless = 0, method = 4, advanced = undefined })`
##### `async .setFrameData(frameIndex, buffer, { width = 0, height = 0, preset = 0, quality = 75, exact = false, lossless = 0, method = 4, advanced = undefined })`
Encode `buffer` as a new WebP using the provided settings and replace an existing frame's pixel data with it.<br />
Use this for animations.<br />
* `frameIndex`: Which frame to get. Frame indexes are 0-based.<br />
Otherwise identical to `.setImageData()`.

@@ -241,0 +244,0 @@ 

+12
-9
webp.js

@@ -220,6 +220,7 @@ // For more information on the WebP format, see https://developers.google.com/speed/webp/docs/riff_container

}
async replaceFrame(frame, d) {
async replaceFrame(frameIndex, d) {
if (!this.hasAnim) { throw new Error("WebP isn't animated"); }
if ((frame < 0) || (frame >= this.frames.length)) { throw new Error(`Frame index ${frame} out of bounds (0 <= index < ${this.frames.length})`); }
let r = new Image(), fr = this.frames[frame];
if (typeof frameIndex !== 'number') { throw new Error('Frame index expects a number'); }
if ((frameIndex < 0) || (frameIndex >= this.frames.length)) { throw new Error(`Frame index out of bounds (0 <= index < ${this.frames.length})`); }
let r = new Image(), fr = this.frames[frameIndex];
await r.load(d);

@@ -320,17 +321,19 @@ switch (r.type) {

}
async getFrameData(frame) {
async getFrameData(frameIndex) {
if (!Image.libwebp) { throw new Error('Must call Image.initLib() before using getFrameData'); }
if (!this.hasAnim) { throw new Error('Calling getFrameData on non-animations is not supported'); }
if ((frame < 0) || (frame >= this.frames.length)) { throw new Error('Frame index out of range'); }
let fr = this.frames[frame], buf = await this._demuxFrame(null, fr);
if (typeof frameIndex !== 'number') { throw new Error('Frame index expects a number'); }
if ((frameIndex < 0) || (frameIndex >= this.frames.length)) { throw new Error('Frame index out of range'); }
let fr = this.frames[frameIndex], buf = await this._demuxFrame(null, fr);
return Image.libwebp.decodeImage(buf, fr.width, fr.height);
}
async setFrameData(frame, buf, { width = 0, height = 0, preset = undefined, quality = undefined, exact = undefined, lossless = undefined, method = undefined, advanced = undefined } = {}) {
async setFrameData(frameIndex, buf, { width = 0, height = 0, preset = undefined, quality = undefined, exact = undefined, lossless = undefined, method = undefined, advanced = undefined } = {}) {
if (!Image.libwebp) { throw new Error('Must call Image.initLib() before using setFrameData'); }
if (!this.hasAnim) { throw new Error('Calling setFrameData on non-animations is not supported'); }
if ((frame < 0) || (frame >= this.frames.length)) { throw new Error('Frame index out of range'); }
if (typeof frameIndex !== 'number') { throw new Error('Frame index expects a number'); }
if ((frameIndex < 0) || (frameIndex >= this.frames.length)) { throw new Error('Frame index out of range'); }
if ((quality !== undefined) && ((quality < 0) || (quality > 100))) { throw new Error('Quality out of range'); }
if ((lossless !== undefined) && ((lossless < 0) || (lossless > 9))) { throw new Error('Lossless preset out of range'); }
if ((method !== undefined) && ((method < 0) || (method > 6))) { throw new Error('Method out of range'); }
let fr = this.frames[frame], ret = Image.libwebp.encodeImage(buf, width > 0 ? width : fr.width, height > 0 ? height : fr.height, { preset, quality, exact, lossless, method, advanced }), img = new Image();
let fr = this.frames[frameIndex], ret = Image.libwebp.encodeImage(buf, width > 0 ? width : fr.width, height > 0 ? height : fr.height, { preset, quality, exact, lossless, method, advanced }), img = new Image();
if (ret.res !== encodeResults.SUCCESS) { return ret.res; }

@@ -337,0 +340,0 @@ await img.load(Buffer.from(ret.buf));