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https://gitee.com/js-yhsec/energy_storage.git
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引入海康威视插件
This commit is contained in:
zhoumengru
6630
web/public/codebase/jsPlugin/transform/libSystemTransform.js
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6630
web/public/codebase/jsPlugin/transform/libSystemTransform.js
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web/public/codebase/jsPlugin/transform/libSystemTransform.wasm
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web/public/codebase/jsPlugin/transform/libSystemTransform.wasm
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240
web/public/codebase/jsPlugin/transform/systemTransform-worker.js
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240
web/public/codebase/jsPlugin/transform/systemTransform-worker.js
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@@ -0,0 +1,240 @@
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importScripts('libSystemTransform.js');
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const RECORDRTP = 0; //录制一份未经过转封装的码流原始数据，用于定位问题
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let dataType = 1;
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// 字母字符串转byte数组
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function stringToBytes (str) {
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var ch;
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var st;
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var re = [];
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for (var i = 0; i < str.length; i++) {
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ch = str.charCodeAt(i); // get char
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st = []; // set up "stack"
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do {
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st.push(ch & 0xFF); // push byte to stack
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ch = ch >> 8; // shift value down by 1 byte
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}
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while (ch);
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// add stack contents to result
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// done because chars have "wrong" endianness
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re = re.concat(st.reverse());
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}
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// return an array of bytes
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return re;
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}
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// 转封装库回调函数
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self.STCallBack = function (fileIndex, indexLen, data, dataLen) {
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//stFrameInfo的类型见DETAIL_FRAME_INFO
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let stFrameInfo = Module._GetDetialFrameInfo();
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let nIsMp4Index = stFrameInfo.nIsMp4Index;
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//console.log("FrameType is " , stFrameInfo);
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//console.log("nIsMp4Index is " + nIsMp4Index);
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//debugger
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var pData = null;
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pData = new Uint8Array(dataLen);
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pData.set(Module.HEAPU8.subarray(data, data + dataLen));
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if (dataType === 1) {
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postMessage({ type: "outputData",
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buf: pData.buffer,
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dType: 1,
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frameInfo: stFrameInfo }, [pData.buffer]);
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dataType = 2;
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} else {
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if (nIsMp4Index) {
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postMessage({ type: "outputData",
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buf: pData.buffer,
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dType: 6,
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frameInfo: stFrameInfo }, [pData.buffer]); //6：索引类型
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} else {
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postMessage({ type: "outputData",
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buf: pData.buffer,
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dType: 2,
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frameInfo: stFrameInfo }, [pData.buffer]); //2:码流
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}
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}
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//stFrameInfo的类型见DETAIL_FRAME_INFO
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//let stFrameInfo = Module._GetDetialFrameInfo();
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//let stFrameType = stFrameInfo.nFrameType;
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//let nFrameNum = stFrameInfo.nFrameNum;
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//let nTimeStamp = stFrameInfo.nTimeStamp;
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//let nIsMp4Index = stFrameInfo.nIsMp4Index;
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//console.log("FrameType is " + stFrameType);
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//console.log("nIsMp4Index is " + nIsMp4Index);
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};
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// self.Module = { memoryInitializerRequest: loadMemInitFile(), TOTAL_MEMORY: 128*1024*1024 };
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// importScripts('SystemTransform.js');
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self.Module['onRuntimeInitialized'] = function () {
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postMessage({type: "loaded"});
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};
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onmessage = function (e) {
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var data = e.data;
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if ("create" === data.type) {
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if (RECORDRTP) {
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postMessage({ type: "created" });
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postMessage({ type: "outputData",
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buf: data.buf,
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dType: 1 }, [data.buf]);
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} else {
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var iHeadLen = data.len;
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var pHead = Module._malloc(iHeadLen);
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if (pHead === null) {
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console.log("inputdata malloc failed!!!");
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return -1;
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}
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var iTransType = data.packType;//目标格式
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var iRet = 0;
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var buf = new Uint8Array(data.buf);
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//PS流(只有ps支持探测)，并且编码格式异常（正常是265和264，11位和10位 不可能全是0，全0 并且是ps就探测策略）的情况下，使用探测策略
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if (buf[9] === 0 && buf[8] === 2 && buf[11] === 0 && buf[10] === 0) {
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iRet = Module._CreatHandle(0, iTransType, iHeadLen); //用探测的策略
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} else {
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self.writeArrayToMemory(buf, pHead);
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iRet = Module._CreatHandle(pHead, iTransType, iHeadLen);
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//-2147483645代表的是参数错误，此种情况，大概率发生在头信息错误，例如大华设备的情况，此时用 无头探测的策略
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//其他情况 按海康标准处理流程，不要做任何特殊处理
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if (iRet == -2147483645) {
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iRet = Module._CreatHandle(0, iTransType, iHeadLen); //失败了，用探测的策略再试一次
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}
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}
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if (iRet != 0) {
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if (iRet == -2147483647) {
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postMessage({ type: "outputData",
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dType: 1501 }); //标记为格式不支持
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} else {
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postMessage({ type: "outputData",
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dType: 1501 }); //转封装创建失败，也同样提示码流格式不支持，如果后续要细化再区分
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}
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console.log("_CreatHandle failed!" + iRet);
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} else {
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if (data.options && typeof data.options.pKeyData !== "undefined" && data.options.pKeyData !== null) {
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if ((2 === iTransType && "" === data.options.pKeyData)) {
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//转ps的时候，如果密码是空是允许的，即使码流加密了，导出加密后的码流就行
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//此时不要设置密码否则反而会提示密码错误
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} else {
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var secretInfo = data.options;
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var keyLen = secretInfo.nKeyLen;
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var pKeyData = Module._malloc(keyLen);
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if (pKeyData === null) {
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console.log("setEncryptKey malloc failed!!!");
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return -1;
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}
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var nKeySize = secretInfo.pKeyData.length;
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var bufData = stringToBytes(secretInfo.pKeyData);
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let inputData = new Uint8Array(bufData);
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Module.writeArrayToMemory(inputData, pKeyData);
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inputData = null;
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iRet = Module._SysTransSetEncryptKey(secretInfo.nKeyType, pKeyData, keyLen, nKeySize);
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if (iRet != 0) {
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console.log("_SysTransSetEncryptKey failed!");
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}
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if (pKeyData != null) {
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Module._free(pKeyData);
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pKeyData = null;
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}
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}
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}
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//带samplingParam参数，代表需要 用到 音频替换功能
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if (data.options && typeof data.options.samplingParam !== "undefined") {
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var oParam = data.options.samplingParam;
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var nCapacityType = 1; //写死1 代表 剔除音频
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var nType = 3; //写死3 代表 修改输出目标的海康头配置，内部包含视频参数、音频参数
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var nAudioEnable = 1; //音频参数修改使能开关，0=不启用，1=启用
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var nAudioFormat = oParam.iAudioType; //音频编码类型 对应关系参考海康媒体头规范，PCM 0x7001 G711_U 0x7110 G711_A 0x7111 AAC 0x2001
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var nAudioChannels = oParam.iChannel; //音频通道数直接设置为
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var nAudioBitsPerSample = oParam.iAudioBitWidth; //音频位样率
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var nAudioSamplesrate = oParam.iAudioSamplingRate; //音频采样率
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var nAudioBitrate = oParam.iAudioBitRate; //音频比特率
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iRet = Module._SysTransConfig(nCapacityType, nType, nAudioEnable, nAudioFormat,
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nAudioChannels, nAudioBitsPerSample, nAudioSamplesrate, nAudioBitrate);
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if (iRet != 0) {
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console.log("_SysTransConfig Failed:" + iRet);
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}
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} else {
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iRet = Module._SysTransConfig(128, 0, 0, 0, 0, 0, 0, 0); //nCapacityType = 0x00000080 代表开启私有信息回调 解决转mp4后，私有信息丢失问题
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if (iRet != 0) {
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console.log("_SysTransConfig Failed:" + iRet);
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}
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}
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iRet = Module._SysTransRegisterDataCallBack();
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if (iRet != 0) {
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console.log("_SysTransRegisterDataCallBack Failed:" + iRet);
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}
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iRet = Module._SysTransStart(null, null);
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if (iRet != 0) {
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console.log("_SysTransStart Failed:" + iRet);
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}
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postMessage({type: "created"});
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}
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if (pHead != null) {
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Module._free(pHead);
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pHead = null;
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}
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}
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} else if ("inputData" === data.type) {
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if (RECORDRTP) {
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var aFileData = new Uint8Array(data.buf); // 拷贝一份
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var iBufferLen = aFileData.length;
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var szBufferLen = iBufferLen.toString(16);
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if (szBufferLen.length === 1) {
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szBufferLen = "000" + szBufferLen;
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} else if (szBufferLen.length === 2) {
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szBufferLen = "00" + szBufferLen;
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} else if (szBufferLen.length === 3) {
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szBufferLen = "0" + szBufferLen;
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}
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var aData = [0, 0, parseInt(szBufferLen.substring(0, 2), 16), parseInt(szBufferLen.substring(2, 4), 16)];
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for (var iIndex = 0, iDataLength = aFileData.length; iIndex < iDataLength; iIndex++) {
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aData[iIndex + 4] = aFileData[iIndex];
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}
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var dataUint8 = new Uint8Array(aData);
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postMessage({type: "outputData",
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buf: dataUint8.buffer,
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dType: 2});
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} else {
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let inputMode = 0; //代表输入原始数据
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if (data.samplingParam) {
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iRet = Module._SysTransInputAudioPara(5, data.samplingParam.iChannel, data.samplingParam.iAudioBitWidth,
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data.samplingParam.iAudioSamplingRate, data.samplingParam.iTimeStamp, data.samplingParam.iAudioBitRate); //参数含义和_SysTransConfig类似
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if (iRet != 0) {
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console.log("_SysTransInputAudioPara Failed:" + iRet);
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}
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inputMode = 2; //输入替换的音频
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}
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var pInputDataBuf = Module._malloc(data.len);
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var idataLen = data.len;
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self.writeArrayToMemory(new Uint8Array(data.buf), pInputDataBuf);
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// 输入数据，每次最多2m
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let pp = Module._SysTransInputData(inputMode, pInputDataBuf, idataLen);
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if (pp == -2147483627) {
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//-2147483627 对应十六进制的80000015
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postMessage({ type: "outputData",
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dType: 1500 }); //标记为密码错误
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} else if (pp == -2147483647) {
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postMessage({ type: "outputData",
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dType: 1501 }); //标记为格式不支持
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} else if (pp != 0) {
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console.log("InputData Failed:" + pp);
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}
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Module._free(pInputDataBuf);
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}
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} else if ("release" === data.type) {
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var iRet = Module._SysTransStop();
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if (iRet != 0) {
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console.log("_SysTransStop failed!");
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}
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Module._SysTransRelease();
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if (iRet != 0) {
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console.log("_SysTransRelease failed!");
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}
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close();
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}
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};
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