NIMVideo

####1、创建一个新项目,然后pod导入云信sdk：终端命令顺便复习一下：

1、cd xxx/项目路径 2、touch Podfile 创建文件 3、Podfile open 打开文件 4、复制以下代码添加需要导入的第三方库

platform :ios, '8.0'
target 'xxx' do
    pod 'NIMSDK', '5.5.0',:inhibit_warnings => true
end

5、pod install 下载第三方库到本地

**注：**inhibit_warnings参数：能够有效的抑制CocoaPods引入的第三方代码库产生的warning，但是有时候会产生意想不到的错误，请注意使用。

####2、导入网易云云信的部分文件： 1、搜索“云信”，然后进入官网。千万别搜索“网易云”，虽然是看起来是一家公司，但是两个网站还不一样。我找不到这里的Demo在哪，找了半天没找到，着实把人坑了一把，这是惨痛的经验教训。这里写图片描述

2、找到下载位置之后，直接拉到底部，选择ios源码下载：这里写图片描述

3、打开源码项目，根据一下路径，将对应的文件导入自己的项目中：这里写图片描述

这里写图片描述

####3、Info.plist文件配置 sdk需要用到麦克风，所以：

Privacy - Microphone Usage Description

####4、开始码代码： 1、在[AppDelegate.m]文件类中注册云信：

#import <NIMSDK/NIMSDK.h>

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    [AppDelegate configNIM];
    return YES;
}

///云信配置
+(void)configNIM{
    //推荐在程序启动的时候初始化 NIMSDK
    NSString *appKey        = @"xxx";
    NIMSDKOption *option    = [NIMSDKOption optionWithAppKey:appKey];
    option.apnsCername      = @"nil";
    option.pkCername        = @"nil";
    [[NIMSDK sharedSDK] registerWithOption:option];
}

2、在进入视频页面之前，先登陆云信账号，再加入某个聊天室，最后再进入聊天室视频：

///跳转页面
-(void)jumpToVideoVC{
    VideoVC *vc = [VideoVC new];
    [self presentViewController:vc animated:YES completion:^{}];
}


///云信登录请求
- (void)getNimLoginWithShowHud:(BOOL)isShowHudErr response:(void(^)(NSError *error))response{
    //云信登录
    NSString *user_accid =  @"xxx";
    NSString *user_nimToken = @"xxx";
    
    [[[NIMSDK sharedSDK] loginManager] login:user_accid token:user_nimToken completion:^(NSError *error) {
        !response?:response(error);
        if (error == nil){
            NSString *userID = [NIMSDK sharedSDK].loginManager.currentAccount;
            if (userID) {
                
                NSString *nick = @"昵称";
                NSString *headerUrl = @"https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTLGrrnBlrnGDwlX6LOIhDv1UMicXKJ9jAv9TVicbVRmI6es3SkXU7bQrxziawS1LoR7CM54BNbrNTphg/132";
                NSDictionary *dic = @{@(NIMUserInfoUpdateTagNick):nick,@(NIMUserInfoUpdateTagAvatar):headerUrl};
                //更新昵称头像信息
                [[NIMSDK sharedSDK].userManager updateMyUserInfo:dic completion:^(NSError *error) {
                    !response?:response(error);
                }];
                NSLog(@"云信登录成功");
            }
        }else{
            if (isShowHudErr == YES) {
                NSString *err = [NSString stringWithFormat:@"登录失败:%ld",(long)error.code];
                NSLog(@"%@",err);
            }
        }
    }];
}


/**
 进入聊天室
 @param roomId 聊天室id
 @param completion 返回结果
 */
-(void)zm_enterChatroomWithRoomId:(NSString *_Nullable)roomId response:(nullable NIMChatroomEnterHandler)completion{
    
    NIMUser *user = [[NIMSDK sharedSDK].userManager userInfo:[NIMSDK sharedSDK].loginManager.currentAccount];
    NIMChatroomEnterRequest *request = [[NIMChatroomEnterRequest alloc] init];
    request.roomId = roomId;
    request.roomNickname = user.userInfo.nickName;
    request.roomAvatar = user.userInfo.avatarUrl;
    
    [[[NIMSDK sharedSDK] chatroomManager] enterChatroom:request completion:^(NSError * _Nullable error, NIMChatroom * _Nullable chatroom, NIMChatroomMember * _Nullable me) {
        !completion?:completion(error,chatroom,me);
        if (error == nil){
            
        }else{
            NSLog(@"进入失败 enter room %@ failed %@ code:%zd",chatroom.roomId,error,error.code);
        }
        
    }];
    
}

3、进入聊天室后，要做好视频配置，加入视频会议，调用视频窗口，加入视频房间：

//thirds
#import <NIMSDK/NIMSDK.h>
#import <NIMAVChat/NIMAVChat.h>
#import "NTESGLView.h"

//设备宽高
#define kIphone_W [UIScreen mainScreen].bounds.size.width
#define kIphone_H [UIScreen mainScreen].bounds.size.height

@interface VideoVC ()<NIMNetCallManagerDelegate>

///视频配置
@property(nonatomic,copy)NIMNetCallVideoCaptureParam *param;
///视频会议
@property(nonatomic,copy)NIMNetCallMeeting *meeting;
///视频窗口
@property(nonatomic,strong)NTESGLView *remoteGLView;


///当前摄像头名字
@property (nonatomic, strong) NSString * currentCamare;
///
@property(nonatomic,copy)NSString *nimRoomName;

///按钮
@property(nonatomic,strong)UIButton *btn;

@end

#pragma mark - initial
- (void)viewDidLoad {
    [super viewDidLoad];
    
    [self setBaseData];
    [self setBaseUI];
}

-(void)setBaseData{
    self.nimRoomName = @"vchat_room_18";
    self.currentCamare = @"vchat_room_18_user1";
    
    //加入视频房间
    [self joinNetCall:self with:self.nimRoomName];
}

-(void)setBaseUI{
    self.view.backgroundColor = [UIColor purpleColor];
    [self remoteGLView];
    [self btn];
}

#pragma mark - NIMNetCallManager 云信管理
///加入房间
- (void)joinNetCall:(UIViewController<NIMNetCallManagerDelegate> *)delegate with:(NSString *)roomName{
    self.meeting.name = roomName;
    [self joinNetCallWithRMeeting:self.meeting delegate:delegate];
}

//加入
- (void)joinNetCallWithRMeeting:(NIMNetCallMeeting *)rMeeting delegate:(UIViewController<NIMNetCallManagerDelegate> *)vc{
    NSLog(@"????===准备加入会议");
    [[NIMAVChatSDK sharedSDK].netCallManager setMeetingRole:NO];//观众模式
    [[NIMAVChatSDK sharedSDK].netCallManager selectVideoAdaptiveStrategy:NIMAVChatVideoAdaptiveStrategySmooth];
    [[NIMAVChatSDK sharedSDK].netCallManager addDelegate:vc];
    
    [[NIMAVChatSDK sharedSDK].netCallManager joinMeeting:rMeeting completion:^(NIMNetCallMeeting * _Nonnull meeting, NSError * _Nullable error) {
        if (!error) {
            NSLog(@"=========加入会议成功");
        }else{
            NSLog(@"%@",error.domain);
        }
    }];
}

//离开房间
- (void)leaveRoom:(NSString *)roomName delegate:(UIViewController<NIMNetCallManagerDelegate> *)delegate{
    self.meeting.name = roomName;
    [[NIMAVChatSDK sharedSDK].netCallManager leaveMeeting:self.meeting];
    [[NIMAVChatSDK sharedSDK].netCallManager removeDelegate:delegate];
    [_remoteGLView removeFromSuperview];
    _remoteGLView = nil;
    self.meeting = nil;
    self.param = nil;
}

#pragma mark - NIMNetCallManagerDelegate
//远程视频 YUV 数据就绪
//480*640
- (void)onRemoteYUVReady:(NSData *)yuvData width:(NSUInteger)width height:(NSUInteger)height from:(NSString *)user {
    if ([user isEqualToString:self.currentCamare]) {
        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
            [_remoteGLView render:yuvData width:width height:height];
            NSLog(@"\n?????\n%ld\n%@",yuvData.length,yuvData);
        });
    }
}
///用户加入了多人会议
- (void)onUserJoined:(NSString *)uid meeting:(NIMNetCallMeeting *)meeting{
    
}
//音量回调
-(void)onMyVolumeUpdate:(UInt16)volume{
    //刷新音量UI
    NSLog(@"%d",volume);
}


///服务器录制信息回调
- (void)onNetCallRecordingInfo:(NIMNetCallRecordingInfo *)info{
    
}
///当前通话网络状态
- (void)onNetStatus:(NIMNetCallNetStatus)status
               user:(NSString *)user{
    NSLog(@"网络状态：%ld and 用户 ：%@",(long)status,user);
    if ([user isEqualToString:self.currentCamare]) {
//        [self changeSignal:status];
    }
}

#pragma mark - method
- (UIViewContentMode)videochatRemoteVideoContentMode
{
    NSInteger setting = [[[NSUserDefaults standardUserDefaults] objectForKey:@"videochat_remote_video_content_mode"] integerValue];
    return (setting == 0) ? UIViewContentModeScaleAspectFill : UIViewContentModeScaleAspectFit;
}

-(void)btnAction:(UIButton *)sender{
    __weak typeof(self) weakSelf = self;
    [self dismissViewControllerAnimated:YES completion:^{
        [weakSelf leaveRoom:weakSelf.nimRoomName delegate:weakSelf];
    }];
}

#pragma mark - lazyload
-(UIButton *)btn{
    if (!_btn) {
        _btn = [UIButton buttonWithType:UIButtonTypeCustom];
        _btn.frame = CGRectMake(100, 20, 100, 50);
        _btn.backgroundColor = [UIColor redColor];
        [_btn setTitle:@"点击返回" forState:UIControlStateNormal];
        [_btn addTarget:self action:@selector(btnAction:) forControlEvents:UIControlEventTouchUpInside];
        [self.view addSubview:_btn];
    }
    return _btn;
}


///视频配置
- (void)fillVideoCaptureSetting:(NIMNetCallVideoCaptureParam *)param{
    param.preferredVideoQuality = NIMNetCallVideoQuality480pLevel;
    param.videoCrop  = NIMNetCallVideoCrop4x3;
    param.videoFrameRate = NIMNetCallVideoFrameRate20FPS;
    param.videoHandler = ^(CMSampleBufferRef  _Nonnull sampleBuffer) {
        NSLog(@"%@",sampleBuffer);
    };
}

- (NIMNetCallVideoCaptureParam *)param{
    if (!_param) {
        _param = [[NIMNetCallVideoCaptureParam alloc]init];
        [self fillVideoCaptureSetting:_param];
    }
    return _param;
}

- (NIMNetCallMeeting *)meeting{
    if (!_meeting) {
        _meeting = [[NIMNetCallMeeting alloc] init];
        _meeting.type = NIMNetCallMediaTypeVideo;
        _meeting.actor = NO;
        _meeting.option.voiceDetect = NO;
        _meeting.option.videoCaptureParam = self.param;
        _meeting.option.pureVideo = YES;
    }
    return _meeting;
}


-(NTESGLView *)remoteGLView{
    if (!_remoteGLView) {
        _remoteGLView = [[NTESGLView alloc] initWithFrame:CGRectMake(0, 100, kIphone_W, kIphone_W*0.75)];
        _remoteGLView.backgroundColor = [UIColor greenColor];
        [_remoteGLView setContentMode:[self videochatRemoteVideoContentMode]];
        [_remoteGLView setBackgroundColor:[UIColor clearColor]];
        [self.view addSubview:_remoteGLView];
    }
    return _remoteGLView;
}

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rattan / NIMVideo

NIMVideo

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