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feat: JPEG XL encoder/decoder #88
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| const codecFactory = require("./codecFactory"); | ||
| const { isNode } = require("browser-or-node"); | ||
|
|
||
| const decoderWrapper = { | ||
| codec: undefined, | ||
| Decoder: undefined, | ||
| Encoder: undefined, | ||
| encoderName: "", | ||
| decoderName: "JpegXLDecoder", | ||
| }; | ||
|
|
||
| const encoderWrapper = { | ||
| codec: undefined, | ||
| Decoder: undefined, | ||
| Encoder: undefined, | ||
| encoderName: "JpegXLEncoder", | ||
| decoderName: "", | ||
| }; | ||
|
|
||
| async function loadDecoder() { | ||
| const module = await import("@cornerstonejs/codec-libjxl/decodewasmjs"); | ||
| return module.default(getModuleOptions("@cornerstonejs/codec-libjxl/decodewasm")); | ||
| } | ||
|
|
||
| async function loadEncoder() { | ||
| const module = await import("@cornerstonejs/codec-libjxl/encodewasmjs"); | ||
| return module.default(getModuleOptions("@cornerstonejs/codec-libjxl/encodewasm")); | ||
| } | ||
|
|
||
| function getModuleOptions(wasmModule) { | ||
| if (!isNode) { | ||
| return {}; | ||
| } | ||
|
|
||
| const nodeRequire = eval("require"); | ||
| const fs = nodeRequire("fs"); | ||
| return { wasmBinary: fs.readFileSync(nodeRequire.resolve(wasmModule)) }; | ||
| } | ||
|
|
||
| async function decode(imageFrame, imageInfo) { | ||
| return codecFactory.runProcess( | ||
| decoderWrapper, | ||
| loadDecoder, | ||
| null, | ||
| decoderWrapper.decoderName, | ||
| (context) => { | ||
| const result = codecFactory.decode( | ||
| context, | ||
| decoderWrapper, | ||
| imageFrame, | ||
| imageInfo | ||
| ); | ||
|
|
||
| result.imageInfo.signed = imageInfo.signed; | ||
| result.imageInfo.isSigned = imageInfo.isSigned; | ||
| result.imageInfo.pixelRepresentation = imageInfo.pixelRepresentation; | ||
| return result; | ||
| } | ||
| ); | ||
| } | ||
|
|
||
| async function encode(imageFrame, imageInfo, options = {}) { | ||
| return codecFactory.runProcess( | ||
| encoderWrapper, | ||
| loadEncoder, | ||
| null, | ||
| encoderWrapper.encoderName, | ||
| (context) => { | ||
| function beforeEncode(encoderInstance) { | ||
| const { | ||
| lossless = true, | ||
| distance, | ||
| effort, | ||
| decodingSpeed, | ||
| } = options; | ||
|
|
||
| encoderInstance.setLossless(lossless); | ||
| if (distance !== undefined) { | ||
| encoderInstance.setDistance(distance); | ||
| } | ||
| if (effort !== undefined) { | ||
| encoderInstance.setEffort(effort); | ||
| } | ||
| if (decodingSpeed !== undefined) { | ||
| encoderInstance.setDecodingSpeed(decodingSpeed); | ||
| } | ||
| } | ||
|
|
||
| const codecImageInfo = Object.assign({}, imageInfo, { isSigned: false }); | ||
| const result = codecFactory.encode( | ||
| context, | ||
| encoderWrapper, | ||
| imageFrame, | ||
| codecImageInfo, | ||
| Object.assign({}, options, { beforeEncode }) | ||
| ); | ||
|
|
||
| result.imageInfo.signed = imageInfo.signed; | ||
| result.imageInfo.isSigned = imageInfo.isSigned; | ||
| return result; | ||
| } | ||
| ); | ||
| } | ||
|
|
||
| function encodeLossless(imageFrame, imageInfo, options = {}) { | ||
| return encode( | ||
| imageFrame, | ||
| imageInfo, | ||
| Object.assign({}, options, { lossless: true }) | ||
| ); | ||
| } | ||
|
|
||
| async function encodeJpegRecompression() { | ||
| throw new Error( | ||
| "JPEG XL JPEG Recompression encoding is not supported by the pixel encoder" | ||
| ); | ||
| } | ||
|
|
||
| function getPixelData(imageFrame, imageInfo) { | ||
| return codecFactory.getPixelData(imageFrame, imageInfo); | ||
| } | ||
|
|
||
| exports.decode = decode; | ||
| exports.encode = encode; | ||
| exports.encodeLossless = encodeLossless; | ||
| exports.encodeJpegRecompression = encodeJpegRecompression; | ||
| exports.getPixelData = getPixelData; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| build/ | ||
| !dist/ | ||
| !dist/** |
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