easylinux/cam-reverse
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cleanup

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This commit is contained in:
DavidVentura
2024-01-31 11:47:22 +01:00
parent 3045c7663a
commit 0b2ac1a118
1 changed files with 27 additions and 30 deletions
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impl.ts
+27 -30
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@@ -10,26 +10,6 @@ const str2byte = (s: string): number[] => {
return Array.from(s).map((_, i) => s.charCodeAt(i));
};
const CmdSndProcHdr = (start: number, cmd: number, len: number, dest: number): DataView => {
len = len + 4; // hdr size?
let cmdHeader = new DataView(new Uint8Array(8).buffer);
cmdHeader.writeU16(u16_swap(start));
cmdHeader.add(2).writeU16(u16_swap(cmd));
cmdHeader.add(4).writeU16(u16_swap(len));
cmdHeader.add(6).writeU16(u16_swap(dest));
return cmdHeader;
};
const DrwHdr = (cmd: number, len: number, d1_or_d2: 0xd1 | 0xd2, m_chan: number, pkt_id: number): DataView => {
let retret = new DataView(new Uint8Array(len + 4).buffer);
retret.writeU16(cmd);
retret.add(2).writeU16(len); // buflen -4?
retret.add(4).writeU8(d1_or_d2);
retret.add(5).writeU8(m_chan); // chan? hardcoded
retret.add(6).writeU16(pkt_id);
return retret;
};
const makeDataReadWrite = (session: Session, command: number, data: DataView | null): DataView => {
const DRW_HEADER_LEN = 0x10;
const TOKEN_LEN = 0x4;
@@ -39,7 +19,7 @@ const makeDataReadWrite = (session: Session, command: number, data: DataView | n
let pkt_len = DRW_HEADER_LEN + TOKEN_LEN;
let payload_len = TOKEN_LEN;
let bufCopy: Uint8Array | null = null;
if (data) {
if (data && data.byteLength > 4) {
bufCopy = new Uint8Array(data.buffer);
const bufDV = new DataView(bufCopy.buffer);
// this mutates the buffer, don't want to mutate the caller
@@ -59,13 +39,17 @@ const makeDataReadWrite = (session: Session, command: number, data: DataView | n
ret.add(12).writeU16(u16_swap(payload_len));
ret.add(14).writeU16(ccDest[command]);
ret.add(16).writeByteArray(session.ticket);
if (data) {
if (data && data.byteLength > 4) {
ret.add(20).writeByteArray(bufCopy);
}
return ret;
};
export const SendIRToggle = (session: Session): DataView => {
return makeDataReadWrite(session, ControlCommands.IRToggle, null);
};
export const SendDevStatus = (session: Session): DataView => {
return makeDataReadWrite(session, ControlCommands.DevStatus, null);
};
@@ -82,28 +66,41 @@ export const SendStartVideo = (session: Session): DataView => {
return makeDataReadWrite(session, ControlCommands.StartVideo, null);
};
export const getVideoKey = (session: Session): void => {
// this is not useful at all
for (let i = 0; i < 12; i++) {
// payload len??
const payload = [0x0, i]; //, 0x0, 0x0, 0x0, 0x0];
const dv = new DataView(new Uint8Array(payload).buffer);
session.send(makeDataReadWrite(session, ControlCommands.VideoParamGet, dv));
}
};
export const SendVideoResolution = (session: Session, resol: 1 | 2 | 3 | 4): null => {
// seems like 0x1 = resolution, and is specified by ID not by size
// unclear what 0x2-0xf achieve - they report back as '0' always -- ignored?
const pairs = {
1: [
// 320 x 240
[0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],
[0x7, 0x0, 0x0, 0x0, 0x20, 0x0, 0x0, 0x0],
//[0x7, 0x0, 0x0, 0x0, 0x20, 0x0, 0x0, 0x0],
],
2: [
// 640x480
[0x7, 0x0, 0x0, 0x0, 0x50, 0x0, 0x0, 0x0],
[0x1, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0],
//[0x7, 0x0, 0x0, 0x0, 0x50, 0x0, 0x0, 0x0],
],
3: [
// also 640x480 on the X5
[0x1, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0],
[0x7, 0x0, 0x0, 0x0, 0x78, 0x0, 0x0, 0x0],
// also 640x480 on the X5 -- hwat now?
[0x1, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0],
//[0x7, 0x0, 0x0, 0x0, 0x78, 0x0, 0x0, 0x0],
],
4: [
// also 640x480 on the X5
[0x1, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0],
[0x7, 0x0, 0x0, 0x0, 0xa0, 0x0, 0x0, 0x0],
// also 640x480 on the X5 -- hwat now?
[0x1, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0],
//[0x7, 0x0, 0x0, 0x0, 0xa0, 0x0, 0x0, 0x0],
],
// maybe the 0x7 = bitrate??
};
pairs[resol].forEach((payload: number[]) => {