功能说明

更新时间：2019-06-26

视频流

代码目录

文件	说明
BDSSVListViewController	视频流控制器
BDSSVListCollectionViewCell	视频流数据单元
BDSSVCollectionWaterfallLayout	视频流瀑布流布局

获取视频媒资

下拉刷新

摘录BDSSVListViewController.m文件

self.collectionView.mj_header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
        if (self.isRefresh) {
            return;
        }
        index = 0;
        self.isRefresh = YES;
        [self.videos removeAllObjects];
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.01f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            NSMutableDictionary *dic = [NSMutableDictionary dictionary];
            if (self.model.author.user_id) {
                dic[@"url"] = [NSString stringWithFormat:@"%@%@",kHost,@"/v1/video/getSpecificVideoList"];
                dic[@"user_id"] = self.model.author.user_id;
            } else {
                dic[@"url"] = [NSString stringWithFormat:@"%@%@",kHost,@"/v1/video/getVideoList"];
            }
            dic[@"index"] = [NSNumber numberWithInteger:index];
            @weakify(self);
            [self.listModel refreshNewListWithParam:dic success:^(NSArray * _Nonnull list) {
                @strongify(self);
                if (self.delegate && [self.delegate respondsToSelector:@selector(sourceDataSuccess:)]) {
                    [self.delegate sourceDataSuccess:list];
                }
                [self.collectionView.mj_header endRefreshing];
                if (list.count > 0) {
                    [self.videos addObjectsFromArray:list];
                    [self.collectionView reloadData];
                    [self.collectionView.mj_footer resetNoMoreData];
                } else {
                    [self.collectionView.mj_footer endRefreshingWithNoMoreData];
                }
                self.collectionView.mj_footer.hidden = NO;
                self.isRefresh = NO;
            } failure:^(NSError * _Nonnull error) {
                @strongify(self);
                if (self.delegate && [self.delegate respondsToSelector:@selector(sourceDataFailure:)]) {
                    [self.delegate sourceDataFailure:error];
                }
                [self.collectionView.mj_header endRefreshing];
                self.isRefresh = NO;
                [self.collectionView reloadData];
                [self.collectionView.mj_footer endRefreshingWithNoMoreData];
            }];
        });
    }];

加载更多

摘录BDSSVListViewController.m文件

self.collectionView.mj_footer = [MJRefreshAutoNormalFooter footerWithRefreshingBlock:^{
        // 进入刷新状态后会自动调用这个block
        if (self.isRefresh) {
            return;
        }
        index++;
        NSLog(@"downrefresh %ld",(long)index);
        self.isRefresh = YES;
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.01f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            NSMutableDictionary *dic = [NSMutableDictionary dictionary];
            if (self.model.author.user_id) {
                dic[@"url"] = [NSString stringWithFormat:@"%@%@",kHost,@"/v1/video/getSpecificVideoList"];
                dic[@"user_id"] = self.model.author.user_id;
            } else {
                dic[@"url"] = [NSString stringWithFormat:@"%@%@",kHost,@"/v1/video/getVideoList"];
            }
            dic[@"index"] = [NSNumber numberWithInteger:index];
            @weakify(self);
            [self.listModel refreshNewListWithParam:dic success:^(NSArray * _Nonnull list) {
                @strongify(self);
                if (self.delegate && [self.delegate respondsToSelector:@selector(sourceDataSuccess:)]) {
                    [self.delegate sourceDataSuccess:list];
                }
                [self.collectionView.mj_footer endRefreshing];
                if (list.count > 0) {
                    [self.videos addObjectsFromArray:list];
                    [self.collectionView reloadData];
                }else {
                    index--;
                    [self.collectionView reloadData];
                    [self.collectionView.mj_footer endRefreshingWithNoMoreData];
                }
                self.isRefresh = NO;
            } failure:^(NSError * _Nonnull error) {
                @strongify(self);
                index--;
                if (self.delegate && [self.delegate respondsToSelector:@selector(sourceDataFailure:)]) {
                    [self.delegate sourceDataFailure:error];
                }
                [self.collectionView.mj_footer endRefreshing];
                self.isRefresh = NO;
                [self.collectionView reloadData];
                [self.collectionView.mj_footer endRefreshingWithNoMoreData];
            }];
        });
    }];

视频采集

代码目录

文件	说明
DARFiltersController	拍摄贴纸控制器
VideoCapture	视频拍摄storyBoard
CaptureViewController	视频拍摄主控制器
LiveModel	视频拍摄模型，负责开启、结束、开始预览、结束预览及手电筒、切换摄像头

开启摄像头采集

摘录CaptureViewController.swift文件，会自动向用户获取摄像头及麦克风系统权限

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(true)
        navigationController?.setNavigationBarHidden(true, animated: false)
        navigationController?.interactivePopGestureRecognizer?.isEnabled = false
        // 还原到拍摄器初始美颜滤镜
        if (model?.session.imageFilterSetting.colorFilter != nil) {
            model?.session.imageFilterSetting.removeFilter(with: .colorAdjust)
        }
        model?.startPreview()
    }

自动开启美颜

开启视频采集，回调中添加美颜能力，摘录CaptureViewController.swift文件

extension CaptureViewController : BDCloudAVRecordSessionDelegate {
    func previewStarted() {
        model?.filterS.imageSetting.setBeautyLevel(0.7);
        model?.filterS.imageSetting.setSkinLevel(0.8);
    }
}

数据流图

视频录制

代码目录

与视频采集相同

开启摄像头录制

摘录CaptureViewController.swift文件，写入录制文件时，会提供开始写入和结束写入回调给开发者，便于业务二次开发

extension CaptureViewController : BDCloudAVRecordSessionDelegate {
    func writeStarted(at time: CMTime) {
        isCapturing = true
        timeCounter = NSDate.init()
        DispatchQueue.main.async {
            self.timer = Timer.scheduledTimer(timeInterval: 0.1, target: self, selector: #selector(self.onTimerCount(timer:)), userInfo: nil, repeats: true)
        }
    }
    
    func writeStopped(at time: CMTime, error: Error!) {
        if self.timer != nil {
            if (self.timer?.isValid)! {
                timer?.invalidate()
                timer = nil
                timeCounter = nil
            }
        }
        
        DispatchQueue.main.async {
            self.isCapturing = false
            self.circleProgressBar.clearProgress()
            if (!self.isCancelled) {
                self.enterEdit()
            }
            self.isCancelled = false;
        }
    }
}

数据流图

视频预览

代码目录

文件	说明
EditSubtitleViewController	字幕控制器
EditViewController.storyboard	视频预览storyBoard
EditSettingViewController	视频处理控制器，包括颜色调整、滤镜、美颜和添加音乐
EditViewController	视频预览控制器，包括预览设置及视频处理设置
PreviewModel	视频预览模型，包括预览开始、结束控制及设置预览文件地址、速度、正反放、区间

颜色调整，参见ImageFilterView.swift文件
滤镜切换，参见StyleFilterView.swift文件
美颜调整，参加BeautyFilterView.swift文件
背景音乐，参加MusicFilterView.swift文件

初始化视频预览文件

摘录PreviewModel.m文件

- (instancetype)initWithSrcFile:(NSString*)file {
    if (self = [super init]) {
        _sourceS = [PartialSourceSetting new];
        _sourceS.file = file;
        _filterS = [FilterSetting new];
        _destS = nil;
        _speed = 1.0;
        BDCloudAVPreviewSession *session = [[BDCloudAVPreviewSession alloc] initWithURL:[NSURL fileURLWithPath:_sourceS.file]];
        session.fillMode = BDCloudAVImagePlayerFillModePreserveAspectRatio;
        _session = session;
        [_filterS setEffectSession:_session];
    }
    return self;
}

开始预览视频文件摘录PreviewModel.m文件，BDCloudAVPreviewSession类实现隐藏在BDCloudAVKit.framework中

- (BDCloudAVPreviewSession*)previewSession {
    return (BDCloudAVPreviewSession*)self.session;
}

- (void)start {
    [self.previewSession start];
}

数据流图

视频特效

支持特效的类型

基础美颜(美白、磨皮)
高级美颜（大眼、瘦脸）
风格滤镜
- 颜色调整（对比度、亮度、曝光度、色温、饱和度、锐度）
- 智能调整（回忆、少女、红润、都市、微光、红唇）
人脸贴纸，只有少数贴纸使用内置，其他需要使用网络下载
- 2D贴纸
- 3D贴纸
- 手势贴纸

使用方式，可参见

颜色调整，参见ImageFilterView.swift文件
滤镜切换，参见StyleFilterView.swift文件
美颜调整，参加BeautyFilterView.swift文件

视频合成&&上传

代码目录

文件	说明
SynSuccessViewController	视频上传结果控制器
UploadViewController	视频上传控制器
ProcessViewController	视频合成控制器
Process	视频合成storyboard
ProcessModel	视频合成模型

视频合成创建、开始及结束

  - (instancetype)initWithSource:(NSString *)src
                   destination:(NSString *)dest
                 videoSettings:(BDCloudAVVideoOutputSettings *)videoSettings
                 audioSettings:(BDCloudAVAudioOutputSettings *)audioSettings {
    if (self = [super init]) {
        _session = [[BDCloudAVProcessSession alloc] initWithSource:[NSURL fileURLWithPath:src]
                                                       destination:[NSURL fileURLWithPath:dest]
                                                     videoSettings:videoSettings
                                                     audioSettings:audioSettings];
    }
    return self;
}

- (void)start {
    [self.session start];
}

- (void)stop {
    [self.session stop];
}

视频上传

摘录UploadVideoActionModel.m文件，使用百度云BOS SDK上传

- (void)start {
    
    __weak typeof(self) wself = self;
    
    dispatch_async(dispatch_get_global_queue(0, 0), ^{
        __strong typeof(wself) sself = wself;
        
        sself.stage = ActionStageOngoing;
        if (sself.actionStartEvent) {
            sself.actionStartEvent();
        }
        
        __block NSError* error;
        
        // 从后台获取上传临时token
        __block NSMutableDictionary *dic = [NSMutableDictionary new];
        BDSSVLoginParam *loginParam = [BDSSVLoginParam shareInstance];
        
        dic[@"user_id"] = loginParam.userid;
        dic[@"file_type"] = @"0";//视频
        dic[@"file_id"] = self.file.lastPathComponent;
        dic[@"location"] = @"nolocation";
        
        sself.uploadConf = [[ClientModel sharedInstance] fetchClientConf:dic];
        
        dic[@"video_id"] = sself.uploadConf[@"video_id"];
        
        if (sself.actionProgressEvent) {
            sself.actionProgressEvent(0.1);
        }
        
        BOSObjectContent* content = [BOSObjectContent new];
        content.objectData.file = sself.file;
        
        BOSPutObjectRequest* putReq = [BOSPutObjectRequest new];
        putReq.bucket = self.uploadConf[@"bucket"];
        putReq.key = self.uploadConf[@"bos_key"];//sself.response.sourceKey;
        putReq.objectContent = content;
        sself.bosClient = [ClientModel sharedInstance].bosClient;
        BCETask* task = [sself.bosClient putObject:putReq];
        task.then(^(BCEOutput* output) {
            if (output.progress) {
                if (sself.actionProgressEvent) {
                    sself.actionProgressEvent(0.1 + output.progress.floatValue * 0.008);
                }
            }
            
            if (output.response) {
                if (sself.actionProgressEvent) {
                    sself.actionProgressEvent(0.9);
                    dic[@"status"] = @"11"; //success
                }
            }
            
            if (output.error) {
                error = output.error;
                dic[@"status"] = @"12"; //failure
            }
        });
        
        if ([sself monitorTaskCancel:task]) {
            return;
        }
        
        if ([sself checkError:error]) {
            return;
        }
        
        [[ClientModel sharedInstance] uploadClientFinish:dic];
        
        if (sself.actionProgressEvent) {
            sself.actionProgressEvent(1);
        }
        
        sself.stage = ActionStageAfter;
        
        self.leftButtonTitle = @"返回首页";
        self.message = @"上传成功!";
        if (sself.actionFinishEvent) {
            sself.actionFinishEvent(nil);
        }
    });
}

整体流程

后端服务集成说明

功能说明

视频流

代码目录

获取视频媒资

视频采集

代码目录

开启摄像头采集

数据流图

视频录制

代码目录

开启摄像头录制

数据流图

视频预览

代码目录

初始化视频预览文件

数据流图

视频特效

支持特效的类型

使用方式，可参见

视频合成&&上传

代码目录

视频合成创建、开始及结束

视频上传

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