camera_hook.js

/* w:156 h:160 */
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const lookup = []
const revLookup = []

const code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (let i = 0, len = code.length; i < len; ++i) {
  lookup[i] = code[i]
  revLookup[code.charCodeAt(i)] = i
}

// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63

function tripletToBase64 (num) {
  return lookup[num >> 18 & 0x3F] +
    lookup[num >> 12 & 0x3F] +
    lookup[num >> 6 & 0x3F] +
    lookup[num & 0x3F]
}

function encodeChunk (uint8, start, end) {
  const output = []
  for (let i = start; i < end; i += 3) {
    const tmp =
      ((uint8[i] << 16) & 0xFF0000) +
      ((uint8[i + 1] << 8) & 0xFF00) +
      (uint8[i + 2] & 0xFF)
    output.push(tripletToBase64(tmp))
  }
  return output.join('')
}

function fromByteArray (uint8) {
  const len = uint8.length
  const extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
  const parts = []
  const maxChunkLength = 16383 // must be multiple of 3

  // go through the array every three bytes, we'll deal with trailing stuff later
  for (let i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
  }

  // pad the end with zeros, but make sure to not forget the extra bytes
  if (extraBytes === 1) {
    const tmp = uint8[len - 1]
    parts.push(
      lookup[tmp >> 2] +
      lookup[(tmp << 4) & 0x3F] +
      '=='
    )
  } else if (extraBytes === 2) {
    const tmp = (uint8[len - 2] << 8) + uint8[len - 1]
    parts.push(
      lookup[tmp >> 10] +
      lookup[(tmp >> 4) & 0x3F] +
      lookup[(tmp << 2) & 0x3F] +
      '='
    )
  }

  return parts.join('')
}


function getLens (b64) {
  const len = b64.length

  if (len % 4 > 0) {
    throw new Error('Invalid string. Length must be a multiple of 4')
  }

  // Trim off extra bytes after placeholder bytes are found
  // See: https://github.com/beatgammit/base64-js/issues/42
  let validLen = b64.indexOf('=')
  if (validLen === -1) validLen = len

  const placeHoldersLen = validLen === len
    ? 0
    : 4 - (validLen % 4)

  return [validLen, placeHoldersLen]
}

// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
  const lens = getLens(b64)
  const validLen = lens[0]
  const placeHoldersLen = lens[1]
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function _byteLength (b64, validLen, placeHoldersLen) {
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function toByteArray (b64) {
  const lens = getLens(b64)
  const validLen = lens[0]
  const placeHoldersLen = lens[1]

  const arr = new Uint8Array(_byteLength(b64, validLen, placeHoldersLen))

  let curByte = 0

  // if there are placeholders, only get up to the last complete 4 chars
  const len = placeHoldersLen > 0
    ? validLen - 4
    : validLen

  let i
  for (i = 0; i < len; i += 4) {
    const tmp =
      (revLookup[b64.charCodeAt(i)] << 18) |
      (revLookup[b64.charCodeAt(i + 1)] << 12) |
      (revLookup[b64.charCodeAt(i + 2)] << 6) |
      revLookup[b64.charCodeAt(i + 3)]
    arr[curByte++] = (tmp >> 16) & 0xFF
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 2) {
    const tmp =
      (revLookup[b64.charCodeAt(i)] << 2) |
      (revLookup[b64.charCodeAt(i + 1)] >> 4)
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 1) {
    const tmp =
      (revLookup[b64.charCodeAt(i)] << 10) |
      (revLookup[b64.charCodeAt(i + 1)] << 4) |
      (revLookup[b64.charCodeAt(i + 2)] >> 2)
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  return arr
}

const colors = {
    colorize: (str, cc) => `\x1b${cc}${str}\x1b[0m`,
    red: str => colors.colorize(str, '[31m'),
    green: str => colors.colorize(str, '[32m'),
    yellow: str => colors.colorize(str, '[33m'),
    blue: str => colors.colorize(str, '[34m'),
    cyan: str => colors.colorize(str, '[36m'),
    white: str => colors.colorize(str, '[37m'),
};


Java.perform(function(){
	Java.use("com.lianhezhuli.btnotification.function.device.remotecamera.Preview$1").onPreviewFrame.overload('[B', 'android.hardware.Camera').implementation = function(bytearr,camera){
		console.log("onPreviewFrame called: "+bytearr.length);
		this.onPreviewFrame(bytearr,camera);
	}
	

	var type=Java.use("com.lianhezhuli.btnotification.mtk.btconnection.BluetoothManager");
	type.sendCommandToRemote.overload('int','java.lang.String').implementation = function (n,cmd) {
		console.log(colors.blue("sendCommandToRemote n:"+n+" cmd:"+cmd));
		this.sendCommandToRemote(n,cmd);
		return;
	}

	type.sendDataToRemote.overload('int','[B').implementation = function (n,data) {
		console.log(colors.green("sendDataToRemote n:"+n+" data:"+data.length));
		this.sendDataToRemote(n,data);
		return;
	}

	type.sendCAPCData.overload('[B').implementation = function (data) {
		console.log(colors.cyan("sendCAPCData data:"+data.length));
		var ret = this.sendCAPCData.overload('[B').call(this,data);
		return ret;
	}
	/*var trigg = Java.use("com.lianhezhuli.btnotification.mtk.service.RemoteCameraService");
	trigg.onReceive.overload('android.content.Context', 'android.content.Intent').implementation = function (con,inti) {
		var ext_dat = inti.getByteArrayExtra("EXTRA_DATA")
		if(ext_dat[0]==49) {
			console.log("Action: "+ext_dat[0])
			var main_service = 0
			Java.choose("com.lianhezhuli.btnotification.mtk.service.MainService", {
				onMatch:function(instance){
					main_service = instance
					console.log("Found instance" + main_service);
				},
				onComplete:function() {
					console.log("search done");
				}
			});
			main_service.sendCAPCResult("1 0 ")
			var btman_insta = 0
			Java.choose("com.lianhezhuli.btnotification.mtk.btconnection.BluetoothManager", {
				onMatch:function(instance){
					btman_insta = instance
					console.log("Found instance" + btman_insta);
				},
				onComplete:function() {
					console.log("search done");
				}
			});
			const delay = ms => new Promise(resolve => setTimeout(resolve, ms))
			//while(1){
			btman_insta.sendCommandToRemote(7,"4 1 "+(toByteArray(col_pat_2).length));
			//main_service.sendCAPCData(toByteArray(col_pat_2));
			var ret = main_service.sendCAPCData.overload('[B').call(main_service,toByteArray(col_pat_2));
			delay(1000)
			//}
		} else if(ext_dat[0]==51) {
			console.log("Action: "+ext_dat[0])
			console.log(this.needPreview.value)
			this.needPreview.value = true
		} else if(ext_dat[0]==52){
			console.log("Action: "+ext_dat[0])
			const intentClass = Java.use("android.content.Intent");
			var intent_c = intentClass.$new();
			intent_c.setAction("com.lianhezhuli.RemoteCamera.CAPTURE");
			con.sendBroadcast(intent_c)
		} 
		return;
	}*/
});