decord/source/4758_getStringFromDataView.js
2026-07-24 07:16:23 +00:00

117 lines
3.4 KiB
JavaScript

// Module ID: 4758
// Function ID: 41322
// Name: getStringFromDataView
// Dependencies: [4745, 4748]
// Module 4758 (getStringFromDataView)
const require = arg1;
const module = arg2;
const dependencyMap = arg6;
arg5.default = {
isWebpFile(dataView) {
let tmp2 = !tmp;
if (!!dataView) {
tmp2 = require(4745) /* getStringFromDataView */.getStringFromDataView(dataView, 0, 4) === "RIFF";
const obj = require(4745) /* getStringFromDataView */;
}
if (tmp2) {
tmp2 = require(4745) /* getStringFromDataView */.getStringFromDataView(dataView, 8, 4) === "WEBP";
const obj2 = require(4745) /* getStringFromDataView */;
}
return tmp2;
},
findOffsets(byteLength) {
let num = 12;
let flag = false;
let tmp5;
let tmp6;
let tmp7;
let tmp8;
let flag2 = false;
if (20 < byteLength.byteLength) {
while (true) {
let tmp9 = require;
let tmp10 = dependencyMap;
let obj = require(4745) /* getStringFromDataView */;
let stringFromDataView = obj.getStringFromDataView(byteLength, num, 4);
let uint32 = byteLength.getUint32(num + 4, true);
let tmp13 = module;
let tmp14 = num;
if (module(4748).USE_EXIF) {
if ("EXIF" === stringFromDataView) {
let tmp23 = require;
let tmp24 = dependencyMap;
let obj4 = require(4745) /* getStringFromDataView */;
let sum = num + 8;
let sum1 = sum;
if (obj4.getStringFromDataView(byteLength, sum, 6) === "Exif\0\0") {
sum1 = sum + 6;
}
let tmp19 = sum1;
let tmp20 = tmp2;
let tmp21 = tmp3;
let sum3 = tmp4;
flag = true;
let tmp27 = flag;
let sum2 = uint32;
if (uint32 % 2 !== 0) {
sum2 = uint32 + 1;
}
num = num + (8 + sum2);
let tmp = tmp19;
tmp2 = tmp20;
tmp3 = tmp21;
tmp4 = sum3;
tmp5 = tmp19;
tmp6 = tmp20;
tmp7 = tmp21;
tmp8 = sum3;
flag2 = flag;
if (num + 8 >= byteLength.byteLength) {
break;
}
}
}
let tmp15 = module;
let tmp16 = dependencyMap;
if (module(4748).USE_XMP) {
if ("XMP " === stringFromDataView) {
obj = { dataOffset: num + 8, length: uint32 };
let items = [obj];
tmp19 = tmp;
tmp20 = items;
tmp21 = tmp3;
sum3 = tmp4;
flag = true;
}
}
let tmp17 = module;
let tmp18 = dependencyMap;
if (module(4748).USE_ICC) {
if ("ICCP" === stringFromDataView) {
obj = { offset: num + 8, length: uint32, chunkNumber: 1, chunksTotal: 1 };
let items1 = [obj];
tmp19 = tmp;
tmp20 = tmp2;
tmp21 = items1;
sum3 = tmp4;
flag = true;
}
}
tmp19 = tmp;
tmp20 = tmp2;
tmp21 = tmp3;
sum3 = tmp4;
if ("VP8X" === stringFromDataView) {
sum3 = num + 8;
tmp19 = tmp;
tmp20 = tmp2;
tmp21 = tmp3;
flag = true;
}
}
}
const obj1 = { hasAppMarkers: flag2, tiffHeaderOffset: tmp5, xmpChunks: tmp6, iccChunks: tmp7, vp8xChunkOffset: tmp8 };
return obj1;
}
};