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encapsulate cxdlp reader in a class

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This commit is contained in:
Stewart Allen 2021-07-24 14:23:42 -04:00
commit 8a42bd5326
1 changed files with 264 additions and 92 deletions
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330
src/mode/sla/x_halot.js
View file

@ -1,108 +1,280 @@
(function() {
if (!this.navigator && this.process && this.process.env) {
let fs = require('fs');
let args = process.argv.slice(2);
let file = args.shift();
let fpos = 0;
let view = new DataView(fs.readFileSync(file).buffer);
function skip(len) {
fpos += len;
return fpos;
const default_values = {
magic1: 'CXSW3DV2',
magic2: '',
model: 'CL-89',
version: 1,
layer_count: 0,
res_x: 3840,
res_y: 2400,
height: 0,
thumb: undefined,
preview1: undefined,
preview2: undefined,
dim_x: '192.000000',
dim_y: '120.000000',
layer: '0.050000',
light_on: 6,
light_off: 2,
light_pwm: 255,
lift_dist: 6,
lift_speed: 60,
down_speed: 150,
base_layers: 8,
base_light_on: 60,
base_light_pwm: 255,
base_lift_dist: 5,
base_lift_speed: 60
};
const data_term = 0x0d0a;
class CXDLP {
constructor() {
Object.assign(this, default_values);
}
function nextU8() {
return view.getUint8(fpos++);
}
function nextU16() {
let u32 = view.getUint16(fpos);
fpos += 2;
return u32;
}
function nextU32() {
let u32 = view.getUint32(fpos);
fpos += 4;
return u32;
}
// takes a DataView Object
read(view) {
let read = new DataReader(view, 0);
function read_string(dbl) {
let len = nextU32();
let len = read.readU32();
let str = '';
while (--len > 0) {
if (dbl) {
nextU8();
read.readU8();
len--;
}
str += String.fromCharCode(nextU8());
str += String.fromCharCode(read.readU8());
}
if (!dbl) {
fpos++;
read.skip(1); // null term on byte strings
}
return str;
}
let meta = {
file,
magic: read_string(),
version: nextU16(),
view,
magic1: read_string(),
version: read.readU16(),
model: read_string(),
layers: nextU16(),
res_x: nextU16(),
res_y: nextU16(),
height: nextU32(),
skip: skip(60),
thumb: skip(26914),
prev1: skip(168202),
prev2: skip(168202),
len_x: read_string(true),
len_y: read_string(true),
layer_count: read.readU16(),
res_x: read.readU16(),
res_y: read.readU16(),
height: read.readU32(),
skip: read.skip(60),
thumb: read.skip(26914),
preview1: read.skip(168202),
preview2: read.skip(168202),
dim_x: read_string(true),
dim_y: read_string(true),
layer: read_string(true),
layer_light_on: nextU16(),
layer_light_off: nextU16(),
base_light_on: nextU16(),
base_layers: nextU16(),
base_lift_dist: nextU16(),
base_lift_speed: nextU16(),
layer_lift_dist: nextU16(),
layer_lift_speed: nextU16(),
down_speed: nextU16(),
base_light_pwm: nextU16(),
layer_light_pwm: nextU16()
light_on: read.readU16(),
light_off: read.readU16(),
base_light_on: read.readU16(),
base_layers: read.readU16(),
base_lift_dist: read.readU16(),
base_lift_speed: read.readU16(),
lift_dist: read.readU16(),
lift_speed: read.readU16(),
down_speed: read.readU16(),
light_pwm: read.readU16(),
light_pwm: read.readU16()
};
console.log(meta);
let layer_sizes = [];
for (let i=0; i<meta.layers; i++) {
layer_sizes.push(nextU32());
// read layer record lengths
let layers = this.layers = [];
for (let i=0; i<meta.layer_count; i++) {
layers.push({ length: read.readU32() });
}
let term = nextU16(); // 0x0d0a
console.log(layer_sizes, term.toString(16));
let layer_data = [];
for (let i=0; i<meta.layers; i++) {
let size = nextU32();
let lines = nextU32();
if (read.readU16() !== data_term) {
throw `invalid data term @ ${read.pos - 2}`;
}
// read layer meta data, not line data
for (let i=0; i<meta.layer_count; i++) {
let size = read.readU32();
if (size !== layers[i].length) {
throw `layer length mismatch: ${size} != ${layer_sizes[i]}}`;
}
let lines = read.readU32();
layers[i].lines = lines;
layers[i].pos = read.pos; // store line data position
// skip line data and check data term is valid
read.skip(lines * 6);
if (read.readU16() !== data_term) {
throw `invalid data term @ ${read.pos - 2}`;
}
}
// read trailing magic
meta.magic2 = read_string();
// compute checksum and verify
let cksum = 0;
for (let i=0; i<read.pos; i++) {
cksum = cksum ^ view.getUint8(i);
}
meta.checksum = cksum;
if (cksum !== read.readU32()) {
throw `checksum mismatch`;
}
delete meta.skip;
Object.assign(this, meta);
return this;
}
get_layer_lines(layer) {
if (this.view) {
if (layer > this.layers.length) {
throw `layer out of range 0-${this.layers.length}`;
}
let out = [];
let rec = this.layers[layer];
let { lines, pos } = rec;
for (let j=0; j<lines; j++) {
skip(6); // line data
let d1 = this.view.getUint16(pos); pos += 2;
let d2 = this.view.getUint16(pos); pos += 2;
let d3 = this.view.getUint16(pos); pos += 2;
let y_start = d1 >> 3;
let y_end = (d1 & 0x07) | (d2 >> 6);
let x_end = (d2 & 0x3f) | (d3 >> 8);
let color = d3 & 0xf;
out.push({y_start, y_end, x_end, color});
}
term = nextU16(); // 0x0d0a
// console.log({i, fpos, size, lines, term: term.toString(16)});
if (term != 0xd0a) {
console.log({term_mismatch: term.toString(16)});
break;
return out;
} else {
throw "missing data view";
}
if (size !== layer_sizes[i]) {
console.log({size_mismatch: size, expected: layer_sizes[i]});
break;
}
layer_data.push({ size, lines, term });
write() {
// TODO
}
let magic2 = read_string();
// calculate checksum with progressive XOR of all bytes up to this one
let csum = 0;
for (let i=0; i<fpos; i++) {
csum = csum ^ view.getUint8(i);
}
let checksum = nextU32();
console.log({magic2, checksum: checksum.toString(16), csum: csum.toString(16)});
if (!this.navigator && this.process && this.process.env) {
let fs = require('fs');
let self = this;
eval(fs.readFileSync("src/add/class.js").toString());
let args = process.argv.slice(2);
let file = args.shift();
// let fpos = 0;
let view = new DataView(fs.readFileSync(file).buffer);
let read = new DataReader(view, 0);
let cxdlp = new CXDLP().read(view);
console.log({cxdlp}, cxdlp.layers.slice(0,5));
console.log(cxdlp.get_layer_lines(1));
//
// function skip(len) {
// return read.skip(len);
// }
//
// function readU8() {
// return read.readU8();
// }
//
// function readU16() {
// return read.readU16();
// }
//
// function readU32() {
// return read.readU32();
// }
//
// function read_string(dbl) {
// let len = readU32();
// let str = '';
// while (--len > 0) {
// if (dbl) {
// readU8();
// len--;
// }
// str += String.fromCharCode(readU8());
// }
// if (!dbl) {
// skip(1); // zero term on byte strings
// // fpos++;
// }
// return str;
// }
//
// let meta = {
// file,
// magic: read_string(),
// version: readU16(),
// model: read_string(),
// layer_count: readU16(),
// res_x: readU16(),
// res_y: readU16(),
// height: readU32(),
// skip: skip(60),
// thumb: skip(26914),
// preview1: skip(168202),
// preview2: skip(168202),
// dim_x: read_string(true),
// dim_y: read_string(true),
// layer: read_string(true),
// layer_light_on: readU16(),
// layer_light_off: readU16(),
// base_light_on: readU16(),
// base_layers: readU16(),
// base_lift_dist: readU16(),
// base_lift_speed: readU16(),
// layer_lift_dist: readU16(),
// layer_lift_speed: readU16(),
// down_speed: readU16(),
// base_light_pwm: readU16(),
// layer_light_pwm: readU16()
// };
// console.log(meta);
// let layer_sizes = [];
// for (let i=0; i<meta.layer_count; i++) {
// layer_sizes.push(readU32());
// }
// let term = readU16(); // 0x0d0a
// console.log(layer_sizes, term.toString(16));
// let layer_data = [];
// for (let i=0; i<meta.layer_count; i++) {
// let size = readU32();
// if (size !== layer_sizes[i]) {
// console.log({size_mismatch: size, expected: layer_sizes[i]});
// break;
// }
// let lines = readU32();
// for (let j=0; j<lines; j++) {
// let d1 = readU16();
// let d2 = readU16();
// let d3 = readU16();
// let y_start = d1 >> 3;
// let y_end = (d1 & 0x07) | (d2 >> 6);
// let x_end = (d2 & 0x3f) | (d3 >> 8);
// let color = d3 & 0xf;
// if (i === 1 && j < 100) {
// console.log({j, lines, y_start, y_end, x_end, color});
// }
// }
// term = readU16(); // 0x0d0a
// // console.log({i, fpos, size, lines, term: term.toString(16)});
// if (term != 0xd0a) {
// console.log({term_mismatch: term.toString(16)});
// break;
// }
// layer_data.push({ size, lines, term });
// }
// let magic2 = read_string();
// // calculate checksum with progressive XOR of all bytes up to this one
// let csum = 0;
// for (let i=0; i<read.pos; i++) {
// csum = csum ^ view.getUint8(i);
// }
// let checksum = readU32();
// console.log({magic2, checksum: checksum.toString(16), csum: csum.toString(16)});
}
}());