app-starlock/lib/main/lockDetail/realTimePicture/realTimePicture_logic.dart

import 'dart:async';
import 'dart:math';

import 'package:flutter/services.dart';
import 'package:flutter_voice_processor/flutter_voice_processor.dart';
import 'package:get/get.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:star_lock/talk/call/callTalk.dart';

import '../../../../talk/call/g711.dart';
import '../../../../talk/udp/udp_manage.dart';
import '../../../../talk/udp/udp_senderManage.dart';
import '../../../../tools/baseGetXController.dart';
import '../../../../tools/eventBusEventManage.dart';
import '../../../app_settings/app_settings.dart';
import 'realTimePicture_state.dart';

class RealTimePictureLogic extends BaseGetXController {
  final RealTimePictureState state = RealTimePictureState();

  /// 初始化发送声音
  initRecorder() {
    state.voiceProcessor = VoiceProcessor.instance;
  }

  /// 收到视频流数据
  StreamSubscription? _getTVDataRefreshUIEvent;
  void _getTVDataRefreshUIAction() {
    // 蓝牙协议通知传输跟蓝牙之外的数据传输类不一样 eventBus
    _getTVDataRefreshUIEvent =
        eventBus.on<GetTVDataRefreshUI>().listen((event) {
      if (event.tvList.isNotEmpty) {
        // 预加载图片数据
        final Uint8List imageData = Uint8List.fromList(event.tvList);
        // 更新状态
        state.listData.value = imageData;
      }
    });
  }

  /// 收到UDP发送的状态
  StreamSubscription? _getUDPStatusRefreshUIEvent;
  void _getUDPStatusRefreshUIAction() {
    _getUDPStatusRefreshUIEvent =
        eventBus.on<GetUDPStatusMonitorUI>().listen((event) {
      state.udpStatus.value = event.udpStatus;
    });
  }

  /// 监视
  udpMonitorAction() async {
    UDPSenderManage.sendMainProtocol(
        command: 152,
        commandTypeIsCalling: 1,
        subCommand: 1,
        lockID: state.getLockName.value,
        lockIP: UDPManage().host,
        userMobile: await state.userUid,
        userMobileIP: await state.userMobileIP,
        endData: []);
  }

  /// 挂断
  udpHangUpAction() async {
    UDPSenderManage.sendMainProtocol(
        command: 152,
        commandTypeIsCalling: 1,
        subCommand: 30,
        lockID: UDPManage().lockId,
        lockIP: UDPManage().host,
        userMobile: await state.userUid,
        userMobileIP: await state.userMobileIP,
        endData: []);
  }

  /// 开门
  udpOpenDoorAction(List<int> list) async {
    UDPSenderManage.sendMainProtocol(
        command: 152,
        commandTypeIsCalling: 1,
        subCommand: 10,
        lockID: UDPManage().lockId,
        lockIP: UDPManage().host,
        userMobile: await state.userUid,
        userMobileIP: await state.userMobileIP,
        endData: list);
    Get.back();
  }

  Future<void> _readG711Data() async {
    final String filePath = 'assets/s10-g711.bin';
    final List<int> audioData = await G711().readAssetFile(filePath);
    // AppLog.log('发送读取711文件数据为:$audioData');//  数据为:$audioData
    // return;
    // AppLog.log('发送读取711文件数据长度为:${audioData.length}');//  数据为:$audioData
    if (audioData.isNotEmpty) {
      // 在这里处理你的音频数据
      // pcmBytes = G711().convertList(audioData);
      // AppLog.log('发送转换pcmBytes数据长度为:${pcmBytes.length}');

      int start = 0;
      final int length = 320;
      while (start < audioData.length) {
        // await Future.delayed(const Duration(milliseconds: 50));

        final int end = (start + length > audioData.length)
            ? audioData.length
            : start + length;
        final List<int> sublist = audioData.sublist(start, end);
        sendRecordData({
          'bytes': sublist,
          // "udpSendDataFrameNumber": 0,
          'lockID': UDPManage().lockId,
          'lockIP': UDPManage().host,
          'userMobile': await state.userUid,
          'userMobileIP': await state.userMobileIP,
        });
        AppLog.log(sublist.toString());
        start += length;
      }
      AppLog.log('G711数据发送完成');
    } else {
      AppLog.log('Failed to read audio data.');
    }
  }

  Future<void> startProcessing() async {
    frameListener(List<int> frame) async {
      // AppLog.log('Get data.length:${frame.length}  Received data:$frame');
      for (int i = 0; i < frame.length; i++) {
        frame[i] = linearToULaw(frame[i]);
      }
      // AppLog.log('change Get data.length:${frame.length}  change Received data:$frame');
      await Future.delayed(const Duration(milliseconds: 50));
      sendRecordData({
        'bytes': frame,
        // "udpSendDataFrameNumber": 0,
        'lockID': UDPManage().lockId,
        'lockIP': UDPManage().host,
        'userMobile': await state.userUid,
        'userMobileIP': await state.userMobileIP,
      });
    }

    errorListener(VoiceProcessorException error) {
      AppLog.log('VoiceProcessorException: $error');
    }

    state.voiceProcessor?.addFrameListener(frameListener);
    state.voiceProcessor?.addErrorListener(errorListener);

    try {
      if (await state.voiceProcessor?.hasRecordAudioPermission() ?? false) {
        await state.voiceProcessor?.start(320, 8000);
        final bool? isRecording = await state.voiceProcessor?.isRecording();
      } else {}
    } on PlatformException catch (ex) {
      AppLog.log('PlatformException: $ex');
    } finally {}
  }

  Future<void> stopProcessing() async {
    try {
      await state.voiceProcessor?.stop();
    } on PlatformException catch (ex) {
      AppLog.log('PlatformException: $ex');
    } finally {}
  }

  void onError(Object e) {
    AppLog.log(e.toString());
  }

  sendRecordData(Map<String, dynamic> args) async {
    final List<int> bytes = args['bytes'];
    // int udpSendDataFrameNumber = args["udpSendDataFrameNumber"];
    final String? lockID = args['lockID'];
    final String? lockIP = args['lockIP'];
    final String? userMobile = args['userMobile'];
    final String? userMobileIP = args['userMobileIP'];
    state.udpSendDataFrameNumber++;
    if (state.udpSendDataFrameNumber >= 65536) state.udpSendDataFrameNumber = 1;
    // 57
    final List<int> topBytes = [];

    topBytes.addAll([
      1, 1, 1, 1, // 时间戳
      1, 0, // 音频
      1, 0, // 帧序号
      64, 0, 0, 0, // 帧长度
      1, 0, // 总包数
      1, 0, // 当前包号
      64, 1, // 数据长度
      176, 4, // 保留
    ]);

    topBytes[6] = state.udpSendDataFrameNumber & 0x000000FF;
    topBytes[7] = (state.udpSendDataFrameNumber & 0x0000FF00) >> 8;

    topBytes.addAll(bytes);
    AppLog.log('setVoiceBytes:$topBytes');

    UDPSenderManage.sendMainProtocol(
        command: 152,
        commandTypeIsCalling: 1,
        subCommand: 8,
        lockID: lockID,
        lockIP: lockIP,
        userMobile: userMobile,
        userMobileIP: userMobileIP,
        endData: topBytes);

    // UDPManage().sendData(topBytes);
  }

  // 拿到的音频转化成pcm
  int linearToULaw(int pcmVal) {
    int mask;
    int seg;
    int uval;

    if (pcmVal < 0) {
      pcmVal = 0x84 - pcmVal;
      mask = 0x7F;
    } else {
      pcmVal += 0x84;
      mask = 0xFF;
    }

    seg = search(pcmVal);
    if (seg >= 8) {
      return 0x7F ^ mask;
    } else {
      uval = seg << 4;
      uval |= (pcmVal >> (seg + 3)) & 0xF;
      return uval ^ mask;
    }
  }

  int search(int val) {
    final List<int> table = [
      0xFF,
      0x1FF,
      0x3FF,
      0x7FF,
      0xFFF,
      0x1FFF,
      0x3FFF,
      0x7FFF
    ];
    final int size = 8;
    for (int i = 0; i < size; i++) {
      if (val <= table[i]) {
        return i;
      }
    }
    return size;
  }

  double _calculateVolumeLevel(List<int> frame) {
    double rms = 0.0;
    for (int sample in frame) {
      rms += pow(sample, 2);
    }
    rms = sqrt(rms / frame.length);

    final double dbfs = 20 * log(rms / 32767.0) / log(10);
    final double normalizedValue = (dbfs + 50) / 50;
    return normalizedValue.clamp(0.0, 1.0);
  }

  Future<bool> getPermissionStatus() async {
    final Permission permission = Permission.microphone;
    //granted 通过，denied 被拒绝，permanentlyDenied 拒绝且不在提示
    final PermissionStatus status = await permission.status;
    if (status.isGranted) {
      return true;
    } else if (status.isDenied) {
      requestPermission(permission);
    } else if (status.isPermanentlyDenied) {
      openAppSettings();
    } else if (status.isRestricted) {
      requestPermission(permission);
    } else {}
    return false;
  }

  ///申请权限
  void requestPermission(Permission permission) async {
    final PermissionStatus status = await permission.request();
    if (status.isPermanentlyDenied) {
      openAppSettings();
    }
  }

  @override
  void onReady() {
    super.onReady();

    _getTVDataRefreshUIAction();
    _getUDPStatusRefreshUIAction();

    initRecorder();
  }

  @override
  void onInit() {
    super.onInit();
  }

  @override
  void onClose() {
    CallTalk().finishAVData();
    _getTVDataRefreshUIEvent!.cancel();
    _getUDPStatusRefreshUIEvent!.cancel();
    if (state.oneMinuteTimeTimer != null) {
      state.oneMinuteTimeTimer.cancel();
    }
    stopProcessing();
    state.listData.value = Uint8List(0);
  }
}