CocosPlugin/ccc-tnt-psd2ui
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ccc-tnt-psd2ui/npm-packages/mac-v2.4.x/ag-psd/dist-es/psdReader.js

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增加中文转拼音- mac
2023-07-27 07:04:13 +00:00
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
import { inflate } from 'pako';
import { resetImageData, offsetForChannel, decodeBitmap, createCanvas, createImageData, toBlendMode, RAW_IMAGE_DATA, largeAdditionalInfoKeys } from './helpers';
import { infoHandlersMap } from './additionalInfo';
import { resourceHandlersMap } from './imageResources';
export var supportedColorModes = [0 /* ColorMode.Bitmap */, 1 /* ColorMode.Grayscale */, 3 /* ColorMode.RGB */];
var colorModes = ['bitmap', 'grayscale', 'indexed', 'RGB', 'CMYK', 'multichannel', 'duotone', 'lab'];
function setupGrayscale(data) {
var size = data.width * data.height * 4;
for (var i = 0; i < size; i += 4) {
data.data[i + 1] = data.data[i];
data.data[i + 2] = data.data[i];
}
}
export function createReader(buffer, offset, length) {
var view = new DataView(buffer, offset, length);
return { view: view, offset: 0, strict: false, debug: false };
}
export function warnOrThrow(reader, message) {
if (reader.strict)
throw new Error(message);
if (reader.debug)
console.warn(message);
}
export function readUint8(reader) {
reader.offset += 1;
return reader.view.getUint8(reader.offset - 1);
}
export function peekUint8(reader) {
return reader.view.getUint8(reader.offset);
}
export function readInt16(reader) {
reader.offset += 2;
return reader.view.getInt16(reader.offset - 2, false);
}
export function readUint16(reader) {
reader.offset += 2;
return reader.view.getUint16(reader.offset - 2, false);
}
export function readInt32(reader) {
reader.offset += 4;
return reader.view.getInt32(reader.offset - 4, false);
}
export function readInt32LE(reader) {
reader.offset += 4;
return reader.view.getInt32(reader.offset - 4, true);
}
export function readUint32(reader) {
reader.offset += 4;
return reader.view.getUint32(reader.offset - 4, false);
}
export function readFloat32(reader) {
reader.offset += 4;
return reader.view.getFloat32(reader.offset - 4, false);
}
export function readFloat64(reader) {
reader.offset += 8;
return reader.view.getFloat64(reader.offset - 8, false);
}
// 32-bit fixed-point number 16.16
export function readFixedPoint32(reader) {
return readInt32(reader) / (1 << 16);
}
// 32-bit fixed-point number 8.24
export function readFixedPointPath32(reader) {
return readInt32(reader) / (1 << 24);
}
export function readBytes(reader, length) {
var start = reader.view.byteOffset + reader.offset;
reader.offset += length;
if ((start + length) > reader.view.buffer.byteLength) {
// fix for broken PSD files that are missing part of file at the end
warnOrThrow(reader, 'Reading bytes exceeding buffer length');
if (length > (100 * 1024 * 1024))
throw new Error('Reading past end of file'); // limit to 100MB
var result = new Uint8Array(length);
var len = Math.min(length, reader.view.byteLength - start);
if (len > 0)
result.set(new Uint8Array(reader.view.buffer, start, len));
return result;
}
else {
return new Uint8Array(reader.view.buffer, start, length);
}
}
export function readSignature(reader) {
return readShortString(reader, 4);
}
export function readPascalString(reader, padTo) {
var length = readUint8(reader);
var text = length ? readShortString(reader, length) : '';
while (++length % padTo) {
reader.offset++;
}
return text;
}
export function readUnicodeString(reader) {
var length = readUint32(reader);
return readUnicodeStringWithLength(reader, length);
}
export function readUnicodeStringWithLength(reader, length) {
var text = '';
while (length--) {
var value = readUint16(reader);
if (value || length > 0) { // remove trailing \0
text += String.fromCharCode(value);
}
}
return text;
}
export function readAsciiString(reader, length) {
var text = '';
while (length--) {
text += String.fromCharCode(readUint8(reader));
}
return text;
}
export function skipBytes(reader, count) {
reader.offset += count;
}
export function checkSignature(reader, a, b) {
var offset = reader.offset;
var signature = readSignature(reader);
if (signature !== a && signature !== b) {
throw new Error("Invalid signature: '".concat(signature, "' at 0x").concat(offset.toString(16)));
}
}
function readShortString(reader, length) {
var buffer = readBytes(reader, length);
var result = '';
for (var i = 0; i < buffer.length; i++) {
result += String.fromCharCode(buffer[i]);
}
return result;
}
function isValidSignature(sig) {
return sig === '8BIM' || sig === 'MeSa' || sig === 'AgHg' || sig === 'PHUT' || sig === 'DCSR';
}
export function readPsd(reader, options) {
var _a;
if (options === void 0) { options = {}; }
// header
checkSignature(reader, '8BPS');
var version = readUint16(reader);
if (version !== 1 && version !== 2)
throw new Error("Invalid PSD file version: ".concat(version));
skipBytes(reader, 6);
var channels = readUint16(reader);
var height = readUint32(reader);
var width = readUint32(reader);
var bitsPerChannel = readUint16(reader);
var colorMode = readUint16(reader);
var maxSize = version === 1 ? 30000 : 300000;
if (width > maxSize || height > maxSize)
throw new Error("Invalid size");
if (channels > 16)
throw new Error("Invalid channel count");
if (bitsPerChannel > 32)
throw new Error("Invalid bitsPerChannel count");
if (supportedColorModes.indexOf(colorMode) === -1)
throw new Error("Color mode not supported: ".concat((_a = colorModes[colorMode]) !== null && _a !== void 0 ? _a : colorMode));
var psd = { width: width, height: height, channels: channels, bitsPerChannel: bitsPerChannel, colorMode: colorMode };
var opt = __assign(__assign({}, options), { large: version === 2 });
var fixOffsets = [0, 1, -1, 2, -2, 3, -3, 4, -4];
// color mode data
readSection(reader, 1, function (left) {
if (opt.throwForMissingFeatures)
throw new Error('Color mode data not supported');
skipBytes(reader, left());
});
// image resources
readSection(reader, 1, function (left) {
var _loop_1 = function () {
var sigOffset = reader.offset;
var sig = '';
// attempt to fix broken document by realigning with the signature
for (var _i = 0, fixOffsets_1 = fixOffsets; _i < fixOffsets_1.length; _i++) {
var offset = fixOffsets_1[_i];
try {
reader.offset = sigOffset + offset;
sig = readSignature(reader);
}
catch (_a) { }
if (isValidSignature(sig))
break;
}
if (!isValidSignature(sig)) {
throw new Error("Invalid signature: '".concat(sig, "' at 0x").concat((sigOffset).toString(16)));
}
var id = readUint16(reader);
readPascalString(reader, 2); // name
readSection(reader, 2, function (left) {
var handler = resourceHandlersMap[id];
var skip = id === 1036 && !!opt.skipThumbnail;
if (!psd.imageResources) {
psd.imageResources = {};
}
if (handler && !skip) {
try {
handler.read(reader, psd.imageResources, left, opt);
}
catch (e) {
if (opt.throwForMissingFeatures)
throw e;
skipBytes(reader, left());
}
}
else {
// options.logMissingFeatures && console.log(`Unhandled image resource: ${id}`);
skipBytes(reader, left());
}
});
};
while (left()) {
_loop_1();
}
});
// layer and mask info
var globalAlpha = false;
readSection(reader, 1, function (left) {
globalAlpha = readLayerInfo(reader, psd, opt);
// SAI does not include this section
if (left() > 0) {
var globalLayerMaskInfo = readGlobalLayerMaskInfo(reader);
if (globalLayerMaskInfo)
psd.globalLayerMaskInfo = globalLayerMaskInfo;
}
else {
// revert back to end of section if exceeded section limits
// opt.logMissingFeatures && console.log('reverting to end of section');
skipBytes(reader, left());
}
while (left() > 0) {
// sometimes there are empty bytes here
while (left() && peekUint8(reader) === 0) {
// opt.logMissingFeatures && console.log('skipping 0 byte');
skipBytes(reader, 1);
}
if (left() >= 12) {
readAdditionalLayerInfo(reader, psd, psd, opt);
}
else {
// opt.logMissingFeatures && console.log('skipping leftover bytes', left());
skipBytes(reader, left());
}
}
}, undefined, opt.large);
var hasChildren = psd.children && psd.children.length;
var skipComposite = opt.skipCompositeImageData && (opt.skipLayerImageData || hasChildren);
if (!skipComposite) {
readImageData(reader, psd, globalAlpha, opt);
}
// TODO: show converted color mode instead of original PSD file color mode
// but add option to preserve file color mode (need to return image data instead of canvas in that case)
// psd.colorMode = ColorMode.RGB; // we convert all color modes to RGB
return psd;
}
function readLayerInfo(reader, psd, options) {
var globalAlpha = false;
readSection(reader, 2, function (left) {
var layerCount = readInt16(reader);
if (layerCount < 0) {
globalAlpha = true;
layerCount = -layerCount;
}
var layers = [];
var layerChannels = [];
for (var i = 0; i < layerCount; i++) {
var _a = readLayerRecord(reader, psd, options), layer = _a.layer, channels = _a.channels;
layers.push(layer);
layerChannels.push(channels);
}
if (!options.skipLayerImageData) {
for (var i = 0; i < layerCount; i++) {
readLayerChannelImageData(reader, psd, layers[i], layerChannels[i], options);
}
}
skipBytes(reader, left());
if (!psd.children)
psd.children = [];
var stack = [psd];
for (var i = layers.length - 1; i >= 0; i--) {
var l = layers[i];
var type = l.sectionDivider ? l.sectionDivider.type : 0 /* SectionDividerType.Other */;
if (type === 1 /* SectionDividerType.OpenFolder */ || type === 2 /* SectionDividerType.ClosedFolder */) {
l.opened = type === 1 /* SectionDividerType.OpenFolder */;
l.children = [];
stack[stack.length - 1].children.unshift(l);
stack.push(l);
}
else if (type === 3 /* SectionDividerType.BoundingSectionDivider */) {
stack.pop();
// this was workaround because I didn't know what `lsdk` section was, now it's probably not needed anymore
// } else if (l.name === '</Layer group>' && !l.sectionDivider && !l.top && !l.left && !l.bottom && !l.right) {
// // sometimes layer group terminator doesn't have sectionDivider, so we just guess here (PS bug ?)
// stack.pop();
}
else {
stack[stack.length - 1].children.unshift(l);
}
}
}, undefined, options.large);
return globalAlpha;
}
function readLayerRecord(reader, psd, options) {
var layer = {};
layer.top = readInt32(reader);
layer.left = readInt32(reader);
layer.bottom = readInt32(reader);
layer.right = readInt32(reader);
var channelCount = readUint16(reader);
var channels = [];
for (var i = 0; i < channelCount; i++) {
var channelID = readInt16(reader);
var channelLength = readUint32(reader);
if (options.large) {
if (channelLength !== 0)
throw new Error('Sizes larger than 4GB are not supported');
channelLength = readUint32(reader);
}
channels.push({ id: channelID, length: channelLength });
}
checkSignature(reader, '8BIM');
var blendMode = readSignature(reader);
if (!toBlendMode[blendMode])
throw new Error("Invalid blend mode: '".concat(blendMode, "'"));
layer.blendMode = toBlendMode[blendMode];
layer.opacity = readUint8(reader) / 0xff;
layer.clipping = readUint8(reader) === 1;
var flags = readUint8(reader);
layer.transparencyProtected = (flags & 0x01) !== 0;
layer.hidden = (flags & 0x02) !== 0;
// 0x04 - obsolete
// 0x08 - 1 for Photoshop 5.0 and later, tells if bit 4 has useful information
// 0x10 - pixel data irrelevant to appearance of document
// 0x20 - ???
// if (flags & 0x20) (layer as any)._2 = true; // TEMP !!!!
skipBytes(reader, 1);
readSection(reader, 1, function (left) {
var mask = readLayerMaskData(reader, options);
if (mask)
layer.mask = mask;
/*const blendingRanges =*/ readLayerBlendingRanges(reader);
layer.name = readPascalString(reader, 4);
while (left()) {
readAdditionalLayerInfo(reader, layer, psd, options);
}
});
return { layer: layer, channels: channels };
}
function readLayerMaskData(reader, options) {
return readSection(reader, 1, function (left) {
if (!left())
return undefined;
var mask = {};
mask.top = readInt32(reader);
mask.left = readInt32(reader);
mask.bottom = readInt32(reader);
mask.right = readInt32(reader);
mask.defaultColor = readUint8(reader);
var flags = readUint8(reader);
mask.positionRelativeToLayer = (flags & 1 /* LayerMaskFlags.PositionRelativeToLayer */) !== 0;
mask.disabled = (flags & 2 /* LayerMaskFlags.LayerMaskDisabled */) !== 0;
mask.fromVectorData = (flags & 8 /* LayerMaskFlags.LayerMaskFromRenderingOtherData */) !== 0;
if (flags & 16 /* LayerMaskFlags.MaskHasParametersAppliedToIt */) {
var params = readUint8(reader);
if (params & 1 /* MaskParams.UserMaskDensity */)
mask.userMaskDensity = readUint8(reader) / 0xff;
if (params & 2 /* MaskParams.UserMaskFeather */)
mask.userMaskFeather = readFloat64(reader);
if (params & 4 /* MaskParams.VectorMaskDensity */)
mask.vectorMaskDensity = readUint8(reader) / 0xff;
if (params & 8 /* MaskParams.VectorMaskFeather */)
mask.vectorMaskFeather = readFloat64(reader);
}
if (left() > 2) {
options.logMissingFeatures && console.log('Unhandled extra mask params');
// TODO: handle these values
/*const realFlags =*/ readUint8(reader);
/*const realUserMaskBackground =*/ readUint8(reader);
/*const top2 =*/ readInt32(reader);
/*const left2 =*/ readInt32(reader);
/*const bottom2 =*/ readInt32(reader);
/*const right2 =*/ readInt32(reader);
}
skipBytes(reader, left());
return mask;
});
}
function readLayerBlendingRanges(reader) {
return readSection(reader, 1, function (left) {
var compositeGrayBlendSource = readUint32(reader);
var compositeGraphBlendDestinationRange = readUint32(reader);
var ranges = [];
while (left()) {
var sourceRange = readUint32(reader);
var destRange = readUint32(reader);
ranges.push({ sourceRange: sourceRange, destRange: destRange });
}
return { compositeGrayBlendSource: compositeGrayBlendSource, compositeGraphBlendDestinationRange: compositeGraphBlendDestinationRange, ranges: ranges };
});
}
function readLayerChannelImageData(reader, psd, layer, channels, options) {
var layerWidth = (layer.right || 0) - (layer.left || 0);
var layerHeight = (layer.bottom || 0) - (layer.top || 0);
var cmyk = psd.colorMode === 4 /* ColorMode.CMYK */;
var imageData;
if (layerWidth && layerHeight) {
if (cmyk) {
imageData = { width: layerWidth, height: layerHeight, data: new Uint8ClampedArray(layerWidth * layerHeight * 5) };
for (var p = 4; p < imageData.data.byteLength; p += 5)
imageData.data[p] = 255;
}
else {
imageData = createImageData(layerWidth, layerHeight);
resetImageData(imageData);
}
}
if (RAW_IMAGE_DATA)
layer.imageDataRaw = [];
for (var _i = 0, channels_1 = channels; _i < channels_1.length; _i++) {
var channel = channels_1[_i];
if (channel.length === 0)
continue;
if (channel.length < 2)
throw new Error('Invalid channel length');
var start = reader.offset;
var compression = readUint16(reader);
if (channel.id === -2 /* ChannelID.UserMask */) {
var mask = layer.mask;
if (!mask)
throw new Error("Missing layer mask data");
var maskWidth = (mask.right || 0) - (mask.left || 0);
var maskHeight = (mask.bottom || 0) - (mask.top || 0);
if (maskWidth && maskHeight) {
var maskData = createImageData(maskWidth, maskHeight);
resetImageData(maskData);
var start_1 = reader.offset;
readData(reader, channel.length, maskData, compression, maskWidth, maskHeight, 0, options.large, 4);
if (RAW_IMAGE_DATA) {
layer.maskDataRaw = new Uint8Array(reader.view.buffer, reader.view.byteOffset + start_1, reader.offset - start_1);
}
setupGrayscale(maskData);
if (options.useImageData) {
mask.imageData = maskData;
}
else {
mask.canvas = createCanvas(maskWidth, maskHeight);
mask.canvas.getContext('2d').putImageData(maskData, 0, 0);
}
}
}
else {
var offset = offsetForChannel(channel.id, cmyk);
var targetData = imageData;
if (offset < 0) {
targetData = undefined;
if (options.throwForMissingFeatures) {
throw new Error("Channel not supported: ".concat(channel.id));
}
}
readData(reader, channel.length, targetData, compression, layerWidth, layerHeight, offset, options.large, cmyk ? 5 : 4);
if (RAW_IMAGE_DATA) {
layer.imageDataRaw[channel.id] = new Uint8Array(reader.view.buffer, reader.view.byteOffset + start + 2, channel.length - 2);
}
reader.offset = start + channel.length;
if (targetData && psd.colorMode === 1 /* ColorMode.Grayscale */) {
setupGrayscale(targetData);
}
}
}
if (imageData) {
if (cmyk) {
var cmykData = imageData;
imageData = createImageData(cmykData.width, cmykData.height);
cmykToRgb(cmykData, imageData, false);
}
if (options.useImageData) {
layer.imageData = imageData;
}
else {
layer.canvas = createCanvas(layerWidth, layerHeight);
layer.canvas.getContext('2d').putImageData(imageData, 0, 0);
}
}
}
function readData(reader, length, data, compression, width, height, offset, large, step) {
if (compression === 0 /* Compression.RawData */) {
readDataRaw(reader, data, width, height, step, offset);
}
else if (compression === 1 /* Compression.RleCompressed */) {
readDataRLE(reader, data, width, height, step, [offset], large);
}
else if (compression === 2 /* Compression.ZipWithoutPrediction */) {
readDataZipWithoutPrediction(reader, length, data, width, height, step, offset);
}
else if (compression === 3 /* Compression.ZipWithPrediction */) {
throw new Error("Compression type not supported: ".concat(compression));
}
else {
throw new Error("Invalid Compression type: ".concat(compression));
}
}
function readGlobalLayerMaskInfo(reader) {
return readSection(reader, 1, function (left) {
if (!left())
return undefined;
var overlayColorSpace = readUint16(reader);
var colorSpace1 = readUint16(reader);
var colorSpace2 = readUint16(reader);
var colorSpace3 = readUint16(reader);
var colorSpace4 = readUint16(reader);
var opacity = readUint16(reader) / 0xff;
var kind = readUint8(reader);
skipBytes(reader, left()); // 3 bytes of padding ?
return { overlayColorSpace: overlayColorSpace, colorSpace1: colorSpace1, colorSpace2: colorSpace2, colorSpace3: colorSpace3, colorSpace4: colorSpace4, opacity: opacity, kind: kind };
});
}
function readAdditionalLayerInfo(reader, target, psd, options) {
var sig = readSignature(reader);
if (sig !== '8BIM' && sig !== '8B64')
throw new Error("Invalid signature: '".concat(sig, "' at 0x").concat((reader.offset - 4).toString(16)));
var key = readSignature(reader);
// `largeAdditionalInfoKeys` fallback, because some keys don't have 8B64 signature even when they are 64bit
var u64 = sig === '8B64' || (options.large && largeAdditionalInfoKeys.indexOf(key) !== -1);
readSection(reader, 2, function (left) {
var handler = infoHandlersMap[key];
if (handler) {
try {
handler.read(reader, target, left, psd, options);
}
catch (e) {
if (options.throwForMissingFeatures)
throw e;
}
}
else {
options.logMissingFeatures && console.log("Unhandled additional info: ".concat(key));
skipBytes(reader, left());
}
if (left()) {
options.logMissingFeatures && console.log("Unread ".concat(left(), " bytes left for additional info: ").concat(key));
skipBytes(reader, left());
}
}, false, u64);
}
function readImageData(reader, psd, globalAlpha, options) {
var compression = readUint16(reader);
if (supportedColorModes.indexOf(psd.colorMode) === -1)
throw new Error("Color mode not supported: ".concat(psd.colorMode));
if (compression !== 0 /* Compression.RawData */ && compression !== 1 /* Compression.RleCompressed */)
throw new Error("Compression type not supported: ".concat(compression));
var imageData = createImageData(psd.width, psd.height);
resetImageData(imageData);
switch (psd.colorMode) {
case 0 /* ColorMode.Bitmap */: {
var bytes = void 0;
if (compression === 0 /* Compression.RawData */) {
bytes = readBytes(reader, Math.ceil(psd.width / 8) * psd.height);
}
else if (compression === 1 /* Compression.RleCompressed */) {
bytes = new Uint8Array(psd.width * psd.height);
readDataRLE(reader, { data: bytes, width: psd.width, height: psd.height }, psd.width, psd.height, 1, [0], options.large);
}
else {
throw new Error("Bitmap compression not supported: ".concat(compression));
}
decodeBitmap(bytes, imageData.data, psd.width, psd.height);
break;
}
case 3 /* ColorMode.RGB */:
case 1 /* ColorMode.Grayscale */: {
var channels = psd.colorMode === 1 /* ColorMode.Grayscale */ ? [0] : [0, 1, 2];
if (psd.channels && psd.channels > 3) {
for (var i = 3; i < psd.channels; i++) {
// TODO: store these channels in additional image data
channels.push(i);
}
}
else if (globalAlpha) {
channels.push(3);
}
if (compression === 0 /* Compression.RawData */) {
for (var i = 0; i < channels.length; i++) {
readDataRaw(reader, imageData, psd.width, psd.height, 4, channels[i]);
}
}
else if (compression === 1 /* Compression.RleCompressed */) {
var start = reader.offset;
readDataRLE(reader, imageData, psd.width, psd.height, 4, channels, options.large);
if (RAW_IMAGE_DATA)
psd.imageDataRaw = new Uint8Array(reader.view.buffer, reader.view.byteOffset + start, reader.offset - start);
}
if (psd.colorMode === 1 /* ColorMode.Grayscale */) {
setupGrayscale(imageData);
}
break;
}
case 4 /* ColorMode.CMYK */: {
if (psd.channels !== 4)
throw new Error("Invalid channel count");
var channels = [0, 1, 2, 3];
if (globalAlpha)
channels.push(4);
if (compression === 0 /* Compression.RawData */) {
throw new Error("Not implemented");
// TODO: ...
// for (let i = 0; i < channels.length; i++) {
// readDataRaw(reader, imageData, channels[i], psd.width, psd.height);
// }
}
else if (compression === 1 /* Compression.RleCompressed */) {
var cmykImageData = {
width: imageData.width,
height: imageData.height,
data: new Uint8Array(imageData.width * imageData.height * 5),
};
var start = reader.offset;
readDataRLE(reader, cmykImageData, psd.width, psd.height, 5, channels, options.large);
cmykToRgb(cmykImageData, imageData, true);
if (RAW_IMAGE_DATA)
psd.imageDataRaw = new Uint8Array(reader.view.buffer, reader.view.byteOffset + start, reader.offset - start);
}
break;
}
default: throw new Error("Color mode not supported: ".concat(psd.colorMode));
}
if (options.useImageData) {
psd.imageData = imageData;
}
else {
psd.canvas = createCanvas(psd.width, psd.height);
psd.canvas.getContext('2d').putImageData(imageData, 0, 0);
}
}
function cmykToRgb(cmyk, rgb, reverseAlpha) {
var size = rgb.width * rgb.height * 4;
var srcData = cmyk.data;
var dstData = rgb.data;
for (var src = 0, dst = 0; dst < size; src += 5, dst += 4) {
var c = srcData[src];
var m = srcData[src + 1];
var y = srcData[src + 2];
var k = srcData[src + 3];
dstData[dst] = ((((c * k) | 0) / 255) | 0);
dstData[dst + 1] = ((((m * k) | 0) / 255) | 0);
dstData[dst + 2] = ((((y * k) | 0) / 255) | 0);
dstData[dst + 3] = reverseAlpha ? 255 - srcData[src + 4] : srcData[src + 4];
}
// for (let src = 0, dst = 0; dst < size; src += 5, dst += 4) {
// const c = 1 - (srcData[src + 0] / 255);
// const m = 1 - (srcData[src + 1] / 255);
// const y = 1 - (srcData[src + 2] / 255);
// // const k = srcData[src + 3] / 255;
// dstData[dst + 0] = ((1 - c * 0.8) * 255) | 0;
// dstData[dst + 1] = ((1 - m * 0.8) * 255) | 0;
// dstData[dst + 2] = ((1 - y * 0.8) * 255) | 0;
// dstData[dst + 3] = reverseAlpha ? 255 - srcData[src + 4] : srcData[src + 4];
// }
}
function readDataRaw(reader, pixelData, width, height, step, offset) {
var size = width * height;
var buffer = readBytes(reader, size);
if (pixelData && offset < step) {
var data = pixelData.data;
for (var i = 0, p = offset | 0; i < size; i++, p = (p + step) | 0) {
data[p] = buffer[i];
}
}
}
export function readDataZipWithoutPrediction(reader, length, pixelData, width, height, step, offset) {
var compressed = readBytes(reader, length);
var decompressed = inflate(compressed);
var size = width * height;
if (pixelData && offset < step) {
var data = pixelData.data;
for (var i = 0, p = offset | 0; i < size; i++, p = (p + step) | 0) {
data[p] = decompressed[i];
}
}
}
export function readDataRLE(reader, pixelData, _width, height, step, offsets, large) {
var data = pixelData && pixelData.data;
var lengths;
if (large) {
lengths = new Uint32Array(offsets.length * height);
for (var o = 0, li = 0; o < offsets.length; o++) {
for (var y = 0; y < height; y++, li++) {
lengths[li] = readUint32(reader);
}
}
}
else {
lengths = new Uint16Array(offsets.length * height);
for (var o = 0, li = 0; o < offsets.length; o++) {
for (var y = 0; y < height; y++, li++) {
lengths[li] = readUint16(reader);
}
}
}
var extraLimit = (step - 1) | 0; // 3 for rgb, 4 for cmyk
for (var c = 0, li = 0; c < offsets.length; c++) {
var offset = offsets[c] | 0;
var extra = c > extraLimit || offset > extraLimit;
if (!data || extra) {
for (var y = 0; y < height; y++, li++) {
skipBytes(reader, lengths[li]);
}
}
else {
for (var y = 0, p = offset | 0; y < height; y++, li++) {
var length_1 = lengths[li];
var buffer = readBytes(reader, length_1);
for (var i = 0; i < length_1; i++) {
var header = buffer[i];
if (header > 128) {
var value = buffer[++i];
header = (256 - header) | 0;
for (var j = 0; j <= header; j = (j + 1) | 0) {
data[p] = value;
p = (p + step) | 0;
}
}
else if (header < 128) {
for (var j = 0; j <= header; j = (j + 1) | 0) {
data[p] = buffer[++i];
p = (p + step) | 0;
}
}
else {
// ignore 128
}
// This showed up on some images from non-photoshop programs, ignoring it seems to work just fine.
// if (i >= length) throw new Error(`Invalid RLE data: exceeded buffer size ${i}/${length}`);
}
}
}
}
}
export function readSection(reader, round, func, skipEmpty, eightBytes) {
if (skipEmpty === void 0) { skipEmpty = true; }
if (eightBytes === void 0) { eightBytes = false; }
var length = readUint32(reader);
if (eightBytes) {
if (length !== 0)
throw new Error('Sizes larger than 4GB are not supported');
length = readUint32(reader);
}
if (length <= 0 && skipEmpty)
return undefined;
var end = reader.offset + length;
if (end > reader.view.byteLength)
throw new Error('Section exceeds file size');
var result = func(function () { return end - reader.offset; });
if (reader.offset !== end) {
if (reader.offset > end) {
warnOrThrow(reader, 'Exceeded section limits');
}
else {
warnOrThrow(reader, "Unread section data"); // : ${end - reader.offset} bytes at 0x${reader.offset.toString(16)}`);
}
}
while (end % round)
end++;
reader.offset = end;
return result;
}
export function readColor(reader) {
var colorSpace = readUint16(reader);
switch (colorSpace) {
case 0 /* ColorSpace.RGB */: {
var r = readUint16(reader) / 257;
var g = readUint16(reader) / 257;
var b = readUint16(reader) / 257;
skipBytes(reader, 2);
return { r: r, g: g, b: b };
}
case 1 /* ColorSpace.HSB */: {
var h = readUint16(reader) / 0xffff;
var s = readUint16(reader) / 0xffff;
var b = readUint16(reader) / 0xffff;
skipBytes(reader, 2);
return { h: h, s: s, b: b };
}
case 2 /* ColorSpace.CMYK */: {
var c = readUint16(reader) / 257;
var m = readUint16(reader) / 257;
var y = readUint16(reader) / 257;
var k = readUint16(reader) / 257;
return { c: c, m: m, y: y, k: k };
}
case 7 /* ColorSpace.Lab */: {
var l = readInt16(reader) / 10000;
var ta = readInt16(reader);
var tb = readInt16(reader);
var a = ta < 0 ? (ta / 12800) : (ta / 12700);
var b = tb < 0 ? (tb / 12800) : (tb / 12700);
skipBytes(reader, 2);
return { l: l, a: a, b: b };
}
case 8 /* ColorSpace.Grayscale */: {
var k = readUint16(reader) * 255 / 10000;
skipBytes(reader, 6);
return { k: k };
}
default:
throw new Error('Invalid color space');
}
}
export function readPattern(reader) {
readUint32(reader); // length
var version = readUint32(reader);
if (version !== 1)
throw new Error("Invalid pattern version: ".concat(version));
var colorMode = readUint32(reader);
var x = readInt16(reader);
var y = readInt16(reader);
// we only support RGB and grayscale for now
if (colorMode !== 3 /* ColorMode.RGB */ && colorMode !== 1 /* ColorMode.Grayscale */ && colorMode !== 2 /* ColorMode.Indexed */) {
throw new Error("Unsupported pattern color mode: ".concat(colorMode));
}
var name = readUnicodeString(reader);
var id = readPascalString(reader, 1);
var palette = [];
if (colorMode === 2 /* ColorMode.Indexed */) {
for (var i = 0; i < 256; i++) {
palette.push({
r: readUint8(reader),
g: readUint8(reader),
b: readUint8(reader),
});
}
skipBytes(reader, 4); // no idea what this is
}
// virtual memory array list
var version2 = readUint32(reader);
if (version2 !== 3)
throw new Error("Invalid pattern VMAL version: ".concat(version2));
readUint32(reader); // length
var top = readUint32(reader);
var left = readUint32(reader);
var bottom = readUint32(reader);
var right = readUint32(reader);
var channelsCount = readUint32(reader);
var width = right - left;
var height = bottom - top;
var data = new Uint8Array(width * height * 4);
for (var i = 3; i < data.byteLength; i += 4) {
data[i] = 255;
}
for (var i = 0, ch = 0; i < (channelsCount + 2); i++) {
var has = readUint32(reader);
if (!has)
continue;
var length_2 = readUint32(reader);
var pixelDepth = readUint32(reader);
var ctop = readUint32(reader);
var cleft = readUint32(reader);
var cbottom = readUint32(reader);
var cright = readUint32(reader);
var pixelDepth2 = readUint16(reader);
var compressionMode = readUint8(reader); // 0 - raw, 1 - zip
var dataLength = length_2 - (4 + 16 + 2 + 1);
var cdata = readBytes(reader, dataLength);
if (pixelDepth !== 8 || pixelDepth2 !== 8) {
throw new Error('16bit pixel depth not supported for patterns');
}
var w = cright - cleft;
var h = cbottom - ctop;
var ox = cleft - left;
var oy = ctop - top;
if (compressionMode === 0) {
if (colorMode === 3 /* ColorMode.RGB */ && ch < 3) {
for (var y_1 = 0; y_1 < h; y_1++) {
for (var x_1 = 0; x_1 < w; x_1++) {
var src = x_1 + y_1 * w;
var dst = (ox + x_1 + (y_1 + oy) * width) * 4;
data[dst + ch] = cdata[src];
}
}
}
if (colorMode === 1 /* ColorMode.Grayscale */ && ch < 1) {
for (var y_2 = 0; y_2 < h; y_2++) {
for (var x_2 = 0; x_2 < w; x_2++) {
var src = x_2 + y_2 * w;
var dst = (ox + x_2 + (y_2 + oy) * width) * 4;
var value = cdata[src];
data[dst + 0] = value;
data[dst + 1] = value;
data[dst + 2] = value;
}
}
}
if (colorMode === 2 /* ColorMode.Indexed */) {
// TODO:
throw new Error('Indexed pattern color mode not implemented');
}
}
else if (compressionMode === 1) {
// console.log({ colorMode });
// require('fs').writeFileSync('zip.bin', Buffer.from(cdata));
// const data = require('zlib').inflateRawSync(cdata);
// const data = require('zlib').unzipSync(cdata);
// console.log(data);
// throw new Error('Zip compression not supported for pattern');
// throw new Error('Unsupported pattern compression');
console.error('Unsupported pattern compression');
name += ' (failed to decode)';
}
else {
throw new Error('Invalid pattern compression mode');
}
ch++;
}
// TODO: use canvas instead of data ?
return { id: id, name: name, x: x, y: y, bounds: { x: left, y: top, w: width, h: height }, data: data };
}
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