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204 lines
8.8 KiB
204 lines
8.8 KiB
package com.inspect.nvr.service.camera;
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import com.inspect.nvr.service.camera.login.DahuaLoginService;
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import com.inspect.nvr.daHuaCarme.jna.NetSDKLib;
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import com.inspect.nvr.daHuaCarme.jna.dahua.ToolKits;
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import com.inspect.nvr.daHuaCarme.utils.jna.DahuaUtils;
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import com.inspect.nvr.domain.Infrared.Camera;
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import com.inspect.nvr.domain.Infrared.TemperatureData;
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import com.inspect.nvr.enums.CameraEnum;
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import com.sun.jna.Pointer;
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import com.sun.jna.ptr.IntByReference;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.stereotype.Service;
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import javax.annotation.Resource;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.TimeoutException;
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import java.util.concurrent.atomic.AtomicInteger;
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/**
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* 大华设备SDK服务
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* 同一个IP，同一个通道，串行
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* 同一个IP，不同通道，最大4个线程并发
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* 不同IP，并发抓图，不限制
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*/
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@Slf4j
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@Service
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public class DahuaCameraService extends AbstractCameraService {
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/**
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* Digest认证抓图URL：
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* http://<host>/cgi-bin/snapshot.cgi?channel=<channel>&subtype=<subtype>
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* subtype: 0-主码流 1-子码流
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*/
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private static final String DIGEST_URL_TEMPLATE = "http://%s/cgi-bin/snapshot.cgi?channel=%d&subtype=1";
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// Key: loginId+CmdSerial（登录句柄+流水号），Value: CompletableFuture（用于通知调用线程）
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private static final ConcurrentHashMap<String, CompletableFuture<byte[]>> PENDING_REQUESTS = new ConcurrentHashMap<>();
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private static final fCaptureReceiveCB CAPTURE_RECEIVE_CB = new fCaptureReceiveCB();
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// 全局流水号生成器
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private static final AtomicInteger SERIAL_COUNTER = new AtomicInteger(1);
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@Resource
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private NetSDKLib dhNetSDK;
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@Resource
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private DahuaLoginService dahuaLoginService;
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// CmdSerial请求序列号，有效值范围 0~65535，超出范围会被截断
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public static int nextSerial() {
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return SERIAL_COUNTER.updateAndGet(current -> (current + 1) & 0xFFFF);
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}
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@Override
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public CameraEnum cameraType() {
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return CameraEnum.DAHUA;
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}
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@Override
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protected String digestUrlTemplate() {
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return DIGEST_URL_TEMPLATE;
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}
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@Override
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protected byte[] doCapture(Camera camera) {
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return snapPictureEx(camera);
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}
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/**
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* 预置位跳转
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*/
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@Override
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protected boolean doGotoPreset(Camera camera) {
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NetSDKLib.LLong loginHandle = dahuaLoginService.login(camera);
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log.info("[" + brandName() + "]预置位跳转，IP={}，LoginHandle={}，pointNum={}", camera.getIp(), loginHandle, camera.getPointNum());
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boolean result = dhNetSDK.CLIENT_DHPTZControlEx2(loginHandle, camera.getChannel() - 1,
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DahuaUtils.PTZCommand("GOTO_PRESET"), 0, camera.getPointNum(), 0, 0, null);
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if (result) {
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log.info("[" + brandName() + "]CLIENT_DHPTZControlEx success，pointNum={}", camera.getPointNum());
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} else {
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log.error("[" + brandName() + "]CLIENT_DHPTZControlEx Failed!!{}", ToolKits.getErrorCodePrint(dhNetSDK.CLIENT_GetLastError()));
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}
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return result;
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}
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/**
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* 大华实时测温（蓝本：DahuaServiceImpl#StartRemote）。
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* 通过 CLIENT_QueryDevInfo 查询测温规则区域温度。
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*/
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@Override
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protected TemperatureData doMeasureTemperature(Camera camera) {
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log.info("[" + brandName() + "]实时测温开始，ip={}, channel={}, presetId={}", camera.getIp(), camera.getChannel(), camera.getPresetId());
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NetSDKLib.LLong loginHandle = dahuaLoginService.login(camera);
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if (loginHandle == null) {
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log.error("[" + brandName() + "]测温失败：登录句柄为空，ip={}", camera.getIp());
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return null;
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}
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// 初始化输入结构体，设置条件参数
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NetSDKLib.NET_IN_RADIOMETRY_GETTEMPER netIn = new NetSDKLib.NET_IN_RADIOMETRY_GETTEMPER();
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netIn.stCondition.nPresetId = camera.getPresetId();
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netIn.stCondition.nRuleId = camera.getRuleId();
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netIn.stCondition.nMeterType = NetSDKLib.NET_RADIOMETRY_METERTYPE.NET_RADIOMETRY_METERTYPE_AREA;
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netIn.stCondition.nChannel = camera.getChannel() - 1;
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// 输出结构体
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NetSDKLib.NET_OUT_RADIOMETRY_GETTEMPER netOut = new NetSDKLib.NET_OUT_RADIOMETRY_GETTEMPER();
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netOut.stTempInfo = new NetSDKLib.NET_RADIOMETRYINFO();
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netIn.write();
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netOut.write();
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boolean success = dhNetSDK.CLIENT_QueryDevInfo(
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loginHandle,
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NetSDKLib.NET_QUERY_DEV_RADIOMETRY_TEMPER,
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netIn.getPointer(),
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netOut.getPointer(),
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null,
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5000
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);
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if (!success) {
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log.error("[" + brandName() + "]获取设备参数失败，错误码：{}", ToolKits.getErrorCodePrint(dhNetSDK.CLIENT_GetLastError()));
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return null;
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}
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// 将本地内存同步到 Java 字段
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netOut.read();
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NetSDKLib.NET_RADIOMETRYINFO stTempInfo = netOut.stTempInfo;
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log.info("[" + brandName() + "]测温结果：最高={}, 最低={}, 平均={}, 温差={}",
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stTempInfo.fTemperMax, stTempInfo.fTemperMin, stTempInfo.fTemperAver, stTempInfo.fTemperStd);
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return new TemperatureData(
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String.valueOf(stTempInfo.fTemperMax),
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String.valueOf(stTempInfo.fTemperMin),
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stTempInfo.fTemperAver,
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stTempInfo.fTemperStd,
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netIn.stCondition.nPresetId,
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netIn.stCondition.nRuleId
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);
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}
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/**
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* 大华SDK抓图具体实现（异步）
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* 通过CompletableFuture实现异步回调通知
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*/
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private byte[] snapPictureEx(Camera camera) {
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NetSDKLib.LLong loginID = dahuaLoginService.login(camera);
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NetSDKLib.SNAP_PARAMS snapParams = new NetSDKLib.SNAP_PARAMS();
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snapParams.Channel = camera.getChannel() - 1; // 通道号从0开始
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snapParams.mode = 0; // 抓图模式：0-单次抓
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snapParams.Quality = 3;
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snapParams.InterSnap = 0;
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int mySerialId = nextSerial();
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snapParams.CmdSerial = mySerialId;
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IntByReference reference = new IntByReference(0);
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// 设置异步抓图回调函数
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dhNetSDK.CLIENT_SetSnapRevCallBack(CAPTURE_RECEIVE_CB, null);
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String requestKey = loginID.longValue() + ":" + mySerialId;
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CompletableFuture<byte[]> future = new CompletableFuture<>();
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PENDING_REQUESTS.put(requestKey, future);
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final int TIMEOUT_SEC = 5;
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try {
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log.info("[" + brandName() + "]开始抓图，LoginID={}，IP={}，Channel={}，Serial={}", loginID, camera.getIp(), camera.getChannel(), mySerialId);
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boolean isCaptured = dhNetSDK.CLIENT_SnapPictureEx(loginID, snapParams, reference);
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if (!isCaptured) {
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String errorMsg = ToolKits.getErrorCodePrint(dhNetSDK.CLIENT_GetLastError());
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throw new RuntimeException("SDK抓图失败：" + errorMsg);
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}
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return future.get(TIMEOUT_SEC, TimeUnit.SECONDS);
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} catch (TimeoutException e) {
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log.error("[" + brandName() + "]抓图超时：在 {} 秒内未收到设备回调，requestKey={}", TIMEOUT_SEC, requestKey);
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} catch (Exception e) {
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log.error("[" + brandName() + "]抓图异常：", e);
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} finally {
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PENDING_REQUESTS.remove(requestKey);
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}
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return null;
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}
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/**
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* CLIENT_SnapPictureEx异步抓图回调函数重写
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*/
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public static class fCaptureReceiveCB implements NetSDKLib.fSnapRev {
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@Override
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public void invoke(NetSDKLib.LLong lLoginID, Pointer pBuf, int RevLen, int EncodeType, int CmdSerial, Pointer dwUser) {
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// 检查是否有等待该流水号的请求
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String requestKey = lLoginID.longValue() + ":" + CmdSerial;
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CompletableFuture<byte[]> future = PENDING_REQUESTS.remove(requestKey);
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if (future != null) {
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log.info("[" + CameraEnum.DAHUA.getName() + "]匹配到抓图回调，LoginID={}, Serial={}", lLoginID, CmdSerial);
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if (pBuf != null && RevLen > 0) {
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// 读取图片数据
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byte[] data = pBuf.getByteArray(0, RevLen);
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// 完成Future，通知主线程
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future.complete(data);
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} else {
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future.completeExceptionally(new RuntimeException("Empty image data"));
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}
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} else {
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// 可能是由于超时已经被移除了，或者是其他类型的抓图
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log.error("[" + CameraEnum.DAHUA.getName() + "]收到未匹配的抓图回调，LoginID={}, Serial={}", lLoginID, CmdSerial);
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}
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}
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}
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}
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