音视频录制及图片添加滤镜

文章目录

1. 1. 使用UIImagePickerController录制
2. 2. 使用AVCaptureSession录制
3. 3. 图片添加简单滤镜

使用原生API进行音视频录制的二种方式

使用UIImagePickerController录制

- (void)imageControllerCapure{
    // 1.判断摄像头可不可用
    if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
        [SWProgressHUB showWithInfoStatus:@"没法找到摄像头"];
        return;
    }
    // 2.判断支不支持录制视频
    NSArray *availableMediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];
    if (![availableMediaTypes containsObject:(NSString *)kUTTypeMovie]){
        [SWProgressHUB showWithInfoStatus:@"无法录制视频"];
        return;
    }
    // 3.创建PickerView
    UIImagePickerController *videoImage = [[UIImagePickerController alloc]init];
    // 4.设置可用类型 摄像头还是图库
    videoImage.sourceType = UIImagePickerControllerSourceTypeCamera;
    // 5.设置媒体类型 图片还是视频
    videoImage.mediaTypes = @[(NSString *)kUTTypeMovie];
    // 6.设置媒体质量 高，中，低....
    videoImage.videoQuality = UIImagePickerControllerQualityTypeHigh;
    // 7.设置代理
    videoImage.delegate = self;
    // 8.设置摄像头模式 前置还是后置
    videoImage.cameraDevice = UIImagePickerControllerCameraDeviceRear;
    [self presentViewController:videoImage animated:YES completion:nil];
}
#pragma mark - 代理
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info{
    WELog(@"infoData = %@",info);
//  infoData = {
//    UIImagePickerControllerMediaType = "public.movie";
//    UIImagePickerControllerMediaURL = "file:///private/var/mobile/Containers/Data/Application/676A90DD-7CC8-4BCE-B0AF-052ED0686CA9/tmp/52160991560__4E8816F7-B81D-49F8-ABAC-F58019E2C0E6.MOV";
// }
    // 录制成功取出数据及地址
    NSData *data = [NSData dataWithContentsOfURL:info[UIImagePickerControllerMediaURL]];
    WELog(@"videoData = %@",data);
    // 将资源保存在图库中
    ALAssetsLibrary *al = [[ALAssetsLibrary alloc]init];
    [al writeVideoAtPathToSavedPhotosAlbum:info[UIImagePickerControllerMediaURL] completionBlock:^(NSURL *assetURL, NSError *error) {
        WELog(@"assetURL = %@",assetURL);
        [self dismissViewControllerAnimated:YES completion:nil];
    }];
}

使用AVCaptureSession录制

@implementation VideoCaptureController
{
    AVCaptureSession *_sesstion;
}

- (void)reportWithFoundtion{
    // 1.添加视频调度sesstion 管理输入输出设备
    _sesstion = [[AVCaptureSession alloc]init];
    // 1.1 设置分辨率
    if ([_sesstion canSetSessionPreset:AVCaptureSessionPreset1280x720]) {
        _sesstion.sessionPreset=AVCaptureSessionPreset1280x720;
    }
    // 2.添加输入设备
    AVCaptureDevice *videoDevice = [self getCameraDeviceWithPosition:AVCaptureDevicePositionBack];
    AVCaptureDevice *audioDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeAudio];
    // 3.添加输入流
    AVCaptureDeviceInput *videoInput = [[AVCaptureDeviceInput alloc]initWithDevice:videoDevice error:nil];
    AVCaptureDeviceInput *audioInput = [[AVCaptureDeviceInput alloc]initWithDevice:audioDevice error:nil];
    // 4.添加输入流到sesstion
    if ([_sesstion canAddInput:videoInput]) {
        [_sesstion addInput:videoInput];
    }
    if ([_sesstion canAddInput:audioInput]) {
        [_sesstion addInput:audioInput];
    }
    // 5.添加输出
    AVCaptureMovieFileOutput *outPut = [[AVCaptureMovieFileOutput alloc]init];
    AVCaptureConnection *captureConnection = [outPut connectionWithMediaType:AVMediaTypeVideo];
    if ([captureConnection isVideoStabilizationSupported]) {
        captureConnection.preferredVideoStabilizationMode =AVCaptureVideoStabilizationModeAuto;
    }
    if ([_sesstion canAddOutput:outPut]) {
        [_sesstion addOutput:outPut];
    }
//    [outPut startRecordingToOutputFileURL:[NSURL fileURLWithPath:[NSString stringWithFormat:@"%@.mp4",PTCacheDir]]  recordingDelegate:self];
    
    // 创建视频预览层，用于实时展示摄像头状态
   AVCaptureVideoPreviewLayer *captureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc]initWithSession:_sesstion];
    CALayer *layer = self.view.layer;
    layer.masksToBounds = YES;
    captureVideoPreviewLayer.frame = layer.bounds;
    // 填充模式
    captureVideoPreviewLayer.videoGravity=AVLayerVideoGravityResizeAspectFill;
    // 将视频预览层添加到界面中
    [layer addSublayer:captureVideoPreviewLayer];
    
    [_sesstion startRunning];
    
    UIButton *save = [UIButton buttonWithType:UIButtonTypeCustom];
    [save setTitle:@"保存" forState:UIControlStateNormal];
    save.frame = CGRectMake(100, 100, 100, 100);
    save.backgroundColor = kMainColor;
    [save addTarget:self action:@selector(stop:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:save];
}
- (AVCaptureDevice *)getCameraDeviceWithPosition:(AVCaptureDevicePosition )position{
    NSArray *cameras= [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo];
    for (AVCaptureDevice *camera in cameras) {
        if ([camera position] == position) {
            return camera;
        }
    }
    return nil;
}
- (void)captureOutput:(AVCaptureFileOutput *)captureOutput didStartRecordingToOutputFileAtURL:(NSURL *)fileURL fromConnections:(NSArray *)connections{
    WELog(@"开始录制");
}
- (void)captureOutput:(AVCaptureFileOutput *)captureOutput didResumeRecordingToOutputFileAtURL:(NSURL *)fileURL fromConnections:(NSArray *)connections{
    WELog(@"重新录制");
}
- (void)captureOutput:(AVCaptureFileOutput *)captureOutput didFinishRecordingToOutputFileAtURL:(NSURL *)outputFileURL fromConnections:(NSArray *)connections error:(NSError *)error
{
    WELog(@"结束录制");
}
- (void)stop:(UIButton *)sender{
    sender.selected = !sender.selected;
    if (sender.selected) {
         [_sesstion stopRunning];
        
    }
    else{
         [_sesstion startRunning];
    }
}
@end

图片添加简单滤镜

- (UIImage *)filterImage:(UIImage *)image{
    CIImage *imag = [CIImage imageWithCGImage:image.CGImage];
    NSLog(@"%@",[CIFilter filterNamesInCategory:kCICategoryDistortionEffect]);
    // 创建修改颜色的滤镜对象
    CIFilter *fifle = [CIFilter filterWithName:@"CIColorMonochrome"];
    // 创建滤镜对象-将图片加入滤镜
    [fifle setValue:imag forKey:kCIInputImageKey];
    // 设置颜色
    [fifle setValue:[CIColor colorWithRed:1.000 green:0.759 blue:0.592 alpha:1] forKey:kCIInputColorKey];
    // 创建上下文对象（图板）
    CIContext *context = [CIContext contextWithOptions:nil];
    // 生成新图片
    CGImageRef imageRef = [context createCGImage:fifle.outputImage fromRect:fifle.outputImage.extent];
    image = [UIImage imageWithCGImage:imageRef];
    return image;
}