helper.js 7.1 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258
  1. //此文件实现将控制命令封装成协议,具体协议内容请看:
  2. //链接:http://note.youdao.com/noteshare?id=dabda6c613adef7a416bd2625cd770a1
  3. //bcc校验码计算
  4. //arry: 要计算的数组
  5. //返回计算协议中校验位的校验码
  6. function calBcc(arry) {
  7. var bcc = 0;
  8. for (var i = 0; i < arry.length; i++) {
  9. bcc ^= arry[i];
  10. }
  11. return bcc;
  12. }
  13. //数组打印,调试用
  14. function PrintArry(data) {
  15. var str = "";
  16. for (var i = 0; i < data.length; i++) {
  17. str = str + data[i].toString(16).padStart(2, '0');
  18. }
  19. str = str.toUpperCase();
  20. return str;
  21. }
  22. //sn:板卡sn号,stirng
  23. //type:数据类型,数字
  24. //jsonCmd: json命令
  25. //返回值:生成一个Uint8Array,通过websocket发送给板卡
  26. function makeFrame(sn, dataType, jsonCmd) {
  27. var index = 0;
  28. var dataLen = jsonCmd.length;
  29. var frameLen = dataLen + 26;
  30. var outPut = new Uint8Array(frameLen);
  31. outPut[index++] = 0x68;
  32. outPut[index++] = (dataLen & 0xff000000) >> 24;
  33. outPut[index++] = (dataLen & 0x00ff0000) >> 16;
  34. outPut[index++] = (dataLen & 0x0000ff00) >> 8;
  35. outPut[index++] = dataLen & 0x000000ff;
  36. outPut[index++] = 0; //类型为client
  37. //sn号赋值,string转ascii
  38. for (var i = 0; i < sn.length; i++) {
  39. outPut[index++] = sn[i].charCodeAt();
  40. }
  41. outPut[index++] = dataType; //指定数据类型为json
  42. //json string转ascii
  43. for (var i = 0; i < jsonCmd.length; i++) {
  44. outPut[index++] = jsonCmd[i].charCodeAt();
  45. }
  46. var bccBuffer = outPut.slice(1, frameLen - 3 + 1); //忽略协议头和协议尾
  47. outPut[index++] = calBcc(bccBuffer);
  48. outPut[index++] = 0x16;
  49. return outPut;
  50. }
  51. //触发键盘事件, code表示键盘值
  52. function ExexuteKeyDown(code) {
  53. var jsonObj = { "data": { "keyCode": code }, "type": "keyCode" };
  54. return JSON.stringify(jsonObj);
  55. }
  56. //触发鼠标按下事件,x:x坐标, y:y坐标
  57. function ExexuteMouseDown(x, y, sn) {
  58. var jsonObj = {
  59. "data": {
  60. "action": 0,
  61. "count": 1,
  62. "pointerId": 0,
  63. "x": x,
  64. "y": y
  65. },
  66. "event": "0"
  67. };
  68. var json = JSON.stringify(jsonObj);
  69. // var sn = "RK3923C1201900139";
  70. return makeFrame(sn, 0, json);
  71. }
  72. //触发鼠标移动事件,x:x坐标, y:y坐标
  73. function ExexuteMouseMove(x, y, sn) {
  74. var jsonObj = {
  75. "data": {
  76. "action": 2,
  77. "count": 1,
  78. "pointerId": 0,
  79. "x": x,
  80. "y": y
  81. },
  82. "event": "2"
  83. };
  84. var json = JSON.stringify(jsonObj);
  85. return makeFrame(sn, 0, json);
  86. }
  87. function ExexuteKeyBoard(keycode) {
  88. // 187:虚拟按键菜单键,3:虚拟按键home键,4:虚拟按键返回键,24:音量增大,25:音量减小
  89. var jsonObj = { "data": { "keyCode": keycode.toString() }, "type": "keyCode" };
  90. return JSON.stringify(jsonObj);
  91. }
  92. //触发鼠标抬起事件,x:x坐标, y:y坐标
  93. function ExexuteMouseUp(x, y, sn) {
  94. var jsonObj = {
  95. "data": {
  96. "action": 1,
  97. "count": 1,
  98. "pointerId": 0,
  99. "x": x,
  100. "y": y
  101. },
  102. "event": "1"
  103. };
  104. var json = JSON.stringify(jsonObj);
  105. return makeFrame(sn, 0, json);
  106. }
  107. //触发滑动事件
  108. function ExexuteMove(data, sn) {
  109. return makeFrame(sn, 0, data);
  110. }
  111. //示例:
  112. //var sn = "RK3923C1201900139";
  113. //var json = "{\"data\":{\"keyCode\":24},\"type\":\"keyDown\"}";
  114. // makeFrame(sn, 0, json);
  115. //ExexuteKeyDown()
  116. // 加个请求I帧的报文
  117. function RequestIFrame(sn) {
  118. var outPut = new Uint8Array([0x20])
  119. return makeFrameExtend(sn, 6, outPut)
  120. }
  121. function makeFrameExtend(sn, dataType, body) {
  122. var index = 0
  123. var dataLen = body.length
  124. var frameLen = dataLen + 26
  125. var outPut = new Uint8Array(frameLen)
  126. outPut[index++] = 0x68
  127. outPut[index++] = (dataLen & 0xff000000) >> 24
  128. outPut[index++] = (dataLen & 0x00ff0000) >> 16
  129. outPut[index++] = (dataLen & 0x0000ff00) >> 8
  130. outPut[index++] = dataLen & 0x000000ff
  131. outPut[index++] = 0 // 类型为client
  132. // sn号赋值,string转ascii
  133. for (var i = 0; i < sn.length; i++) {
  134. outPut[index++] = sn[i].charCodeAt()
  135. }
  136. outPut[index++] = dataType // 指定数据类型为json
  137. // json string转ascii
  138. for (var i = 0; i < body.length; i++) {
  139. outPut[index++] = body[i]
  140. }
  141. var bccBuffer = outPut.slice(1, frameLen - 3 + 1) // 忽略协议头和协议尾
  142. outPut[index++] = calBcc(bccBuffer)
  143. outPut[index++] = 0x16
  144. return outPut
  145. }
  146. function ConfigChannel(sn) {
  147. var outPut = new Uint8Array([0x07])
  148. return makeFrameExtend(sn, 6, outPut)
  149. }
  150. function makeFrameExtend(sn, dataType, body) {
  151. var index = 0;
  152. var dataLen = body.length;
  153. var frameLen = dataLen + 26;
  154. var outPut = new Uint8Array(frameLen);
  155. outPut[index++] = 0x68;
  156. outPut[index++] = (dataLen & 0xff000000) >> 24;
  157. outPut[index++] = (dataLen & 0x00ff0000) >> 16;
  158. outPut[index++] = (dataLen & 0x0000ff00) >> 8;
  159. outPut[index++] = dataLen & 0x000000ff;
  160. outPut[index++] = 0;//类型为client
  161. // sn号赋值,string转ascii
  162. for (var i = 0; i < sn.length; i++) {
  163. outPut[index++] = sn[i].charCodeAt();
  164. }
  165. outPut[index++] = dataType;//指定数据类型为json
  166. // json string转ascii
  167. for (var i = 0; i < body.length; i++) {
  168. outPut[index++] = body[i];
  169. }
  170. var bccBuffer = outPut.slice(1, frameLen - 3 + 1);//忽略协议头和协议尾
  171. outPut[index++] = calBcc(bccBuffer);
  172. outPut[index++] = 0x16;
  173. return outPut;
  174. }
  175. //根据报文识别屏幕方向, 0横屏,1竖屏
  176. function CheckScreenDirection(data) {
  177. if (data[0] == 0 && data[1] == 0 && data[2] == 0 && data[3] == 1) {
  178. if (data[4] == 1 && data[5] == 1) {
  179. if (data[6] == 1) {
  180. screen = data[7];
  181. return screen;
  182. }
  183. }
  184. }
  185. }
  186. var emptyCount = 0;
  187. function GetEmptyFrame() {
  188. var emptyFrame = new Uint8Array([0xFF, 0xF1, 0x50, 0x80, 0x12, 0x5F, 0xFC, 0x21, 0x1A, 0xC8, 0x01, 0x27, 0xFC, 0xC0, 0x00, 0x7E, 0x03, 0x10, 0x40, 0x63, 0x3D, 0x77, 0xE2, 0xB6, 0xE3, 0x6E, 0x00, 0x37, 0x56, 0x78, 0xEB, 0x70, 0xAB, 0xC5, 0x58, 0x08, 0x59, 0x76, 0xF0, 0x47, 0x3D, 0x23, 0x6C, 0xA6, 0x2B, 0x59, 0x4E, 0x9C, 0xE0, 0x23, 0x1C, 0x2D, 0x74, 0xCB, 0xE2, 0xFC, 0x77, 0x7D, 0x26, 0x13, 0xC3, 0x04, 0x40, 0x02, 0x60, 0xF6, 0x03, 0x20, 0x80, 0xC7, 0x9A, 0x11, 0x0E, 0x9B, 0xDA, 0xA0, 0x84, 0x00, 0x2A, 0x95, 0x4A, 0x1E, 0x74, 0xA5, 0x40, 0x2A, 0xCA, 0xA8, 0xCA, 0xF0, 0xF2, 0x1E, 0xA8, 0x77, 0x86, 0xA0, 0x62, 0x8C, 0xB8, 0x5F, 0xA6, 0x67, 0xBF, 0x0D, 0x27, 0x8B, 0xF9, 0x58, 0xBD, 0xE3, 0x2D, 0x0C, 0xBF, 0x48, 0x3C, 0xFD, 0x70, 0x78, 0x5E, 0xA9, 0x0B, 0x24, 0x9C, 0x13, 0x98, 0xA4, 0xA0, 0x6E, 0xCA, 0xAA, 0x7A, 0x88, 0xA5, 0x0C, 0x2E, 0x83, 0x59, 0x02, 0x24, 0x01, 0x41, 0x03, 0x92, 0x10, 0x40, 0x07])
  189. return emptyFrame;
  190. }
  191. //查询屏幕方向
  192. function GetScreenState() {
  193. var sn = "RK3923C1201900139";
  194. var outPut = new Uint8Array([0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x02]);
  195. return makeFrameExtend(sn, 5, outPut);
  196. }
  197. //通道配置
  198. function ConfigChannel(sn) {
  199. var outPut = new Uint8Array([0x07]);
  200. return makeFrameExtend(sn, 6, outPut);
  201. }
  202. //生成鉴权报文
  203. function VerifyCode(sn, code) {
  204. var len = code.length + 1;
  205. var codeBuffer = new TextEncoder("utf-8").encode(code);//获取字符串ascii码
  206. var buffer = new Uint8Array(len);
  207. buffer[0] = 0x04;
  208. for(var i = 0;i < codeBuffer.length;i++) {
  209. buffer[i + 1] = codeBuffer[i];
  210. }
  211. return makeFrameExtend(sn, 6, buffer);
  212. }
  213. //检查鉴权报文
  214. function CheckVerifyCode(data) {
  215. var dataLen = data.length - 26;
  216. var body = data.slice(24, 24 + dataLen);
  217. console.log("打印:" + PrintArry(body));
  218. if(body[3] == 0x03) {
  219. return true;
  220. }
  221. return false;
  222. }