ios 相机录视频和拍照的封装保存到相册

来源：互联网发布：阿里云主机备案编辑：程序博客网时间：2024/05/29 19:04

使用：

@interface ViewController ()@property (nonatomic, strong) CameraTool *videoTool;@property (strong,nonatomic) AVCaptureVideoPreviewLayer *captureVideoPreviewLayer;//相机拍摄预览图层@end@implementation ViewController- (CameraTool *)videoTool {    if(!_videoTool) {        _videoTool = [[CameraTool alloc]init];    }    return _videoTool;}-(void)viewDidLoad {    [super viewDidLoad];        self.captureVideoPreviewLayer  =  [self.videoTool previewLayer];    CALayer *layer=self.view.layer;    layer.masksToBounds=YES;    self.captureVideoPreviewLayer.frame = layer.bounds;    [layer addSublayer:self.captureVideoPreviewLayer];    [self.videoTool startRecordFunction];}

主要代码：

CameraTool.h

#import <Foundation/Foundation.h>#import <AVFoundation/AVFoundation.h>typedef void(^Block)(NSData *data);//回调照片流@interface CameraTool : NSObject@property (strong, nonatomic) NSString *videoPath;//视频路径//捕获到的视频呈现的layer- (AVCaptureVideoPreviewLayer *)previewLayer;//启动录制功能- (void)startRecordFunction;//关闭录制功能- (void)stopRecordFunction;//开始录制- (void) startCapture;//停止录制- (void) stopCapture;//拍照- (void)shutterCamera:(Block)block;//开启闪光灯- (void)openFlashLight;//关闭闪光灯- (void)closeFlashLight;//切换前后置摄像头- (void)changeCameraInputDeviceisFront:(BOOL)isFront;-(void)saveAllVideoToPoto;//保存视频到相册-(void)deleteAllVideo;//删除所有视频@end

CameraTool.m

#import "CameraTool.h"#import <AssetsLibrary/AssetsLibrary.h>#import <Photos/Photos.h>@interface CameraTool() <AVCaptureFileOutputRecordingDelegate>@property (strong, nonatomic) AVCaptureSession *captureSession;  //负责输入和输出设备之间的连接会话,数据流的管理控制@property (strong, nonatomic) AVCaptureVideoPreviewLayer *previewLayer;//捕获到的视频呈现的layer@property (strong, nonatomic) AVCaptureDeviceInput       *backCameraInput;//后置摄像头输入@property (strong, nonatomic) AVCaptureDeviceInput       *frontCameraInput;//前置摄像头输入@property (strong, nonatomic) AVCaptureDeviceInput       *audioMicInput;//麦克风输入@property (strong, nonatomic) AVCaptureConnection        *videoConnection;//视频录制连接@property (strong,nonatomic) AVCaptureMovieFileOutput    *captureMovieFileOutput;//视频输出流@property (nonatomic, strong)AVCaptureStillImageOutput *stillImageOutput;//照片输出流对象@end@implementation CameraTool#pragma mark -API//启动录制功能- (void)startRecordFunction{   [self.captureSession startRunning];}//关闭录制功能- (void)stopRecordFunction{    if(self.captureSession)        [self.captureSession stopRunning];}//开始录制- (void)startCapture{    if(self.captureMovieFileOutput.isRecording)        return;    NSString *defultPath = [self getVideoPathCache];    NSString *outputFielPath=[defultPath stringByAppendingPathComponent:[self getVideoNameWithType:@"mp4"]];    NSLog(@"save path is :%@",outputFielPath);    NSURL *fileUrl=[NSURL fileURLWithPath:outputFielPath];    //设置录制视频流输出的路径    [self.captureMovieFileOutput startRecordingToOutputFileURL:fileUrl recordingDelegate:self];   }//停止录制- (void) stopCapture{    if ([self.captureMovieFileOutput isRecording]) {        [self.captureMovieFileOutput stopRecording];//停止录制    }}// 这是拍照按钮的方法- (void)shutterCamera:(Block)block{    AVCaptureConnection *videoConnection = [self.stillImageOutput connectionWithMediaType:AVMediaTypeVideo];    if (!videoConnection) {        NSLog(@"空");        return;    }        [self.stillImageOutput captureStillImageAsynchronouslyFromConnection:videoConnection completionHandler:^(CMSampleBufferRef imageDataSampleBuffer, NSError *error) {        if (imageDataSampleBuffer == NULL) {            return;        }        NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageDataSampleBuffer];        block(imageData);        UIImage *image = [UIImage imageWithData:imageData];        [self SavedPhoto:image];        NSLog(@"image size = %@", NSStringFromCGSize(image.size));    }];}//保存图片到相册- (void)SavedPhoto:(UIImage *)image{    UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), (__bridge void *)self);}- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{        NSLog(@"image = %@, error = %@, contextInfo = %@", image, error, contextInfo);}//开启闪光灯- (void)openFlashLight{    //改变会话的配置前一定要先开启配置，配置完成后提交配置改变    //[self stopRecordFunction];    [self.captureSession beginConfiguration];    AVCaptureDevice *backCamera = [self backCamera];    if (backCamera.torchMode == AVCaptureTorchModeOff) {        [backCamera lockForConfiguration:nil];        backCamera.torchMode = AVCaptureTorchModeOn;        backCamera.flashMode = AVCaptureFlashModeOn;        [backCamera unlockForConfiguration];    }    //提交会话配置    [self.captureSession commitConfiguration];    [self startRecordFunction];}//关闭闪光灯- (void)closeFlashLight{    //改变会话的配置前一定要先开启配置，配置完成后提交配置改变   // [self stopRecordFunction];    [self.captureSession beginConfiguration];    AVCaptureDevice *backCamera = [self backCamera];    if (backCamera.torchMode == AVCaptureTorchModeOn) {        [backCamera lockForConfiguration:nil];        backCamera.torchMode = AVCaptureTorchModeOff;        backCamera.flashMode = AVCaptureTorchModeOff;        [backCamera unlockForConfiguration];    }    //提交会话配置    [self.captureSession commitConfiguration];    [self startRecordFunction];}//切换前后置摄像头- (void)changeCameraInputDeviceisFront:(BOOL)isFront {    //改变会话的配置前一定要先开启配置，配置完成后提交配置改变    [self stopRecordFunction];    [self.captureSession beginConfiguration];    if (isFront) {                [self.captureSession removeInput:self.backCameraInput];        if ([self.captureSession canAddInput:self.frontCameraInput]) {            //[self changeCameraAnimation];            [self.captureSession addInput:self.frontCameraInput];        }    }else {        [self.captureSession removeInput:self.frontCameraInput];        if ([self.captureSession canAddInput:self.backCameraInput]) {            //[self changeCameraAnimation];            [self.captureSession addInput:self.backCameraInput];        }    }    //提交会话配置    [self.captureSession commitConfiguration];    [self startRecordFunction];}#pragma mark - 视频输出代理-(void)captureOutput:(AVCaptureFileOutput *)captureOutput didStartRecordingToOutputFileAtURL:(NSURL *)fileURL fromConnections:(NSArray *)connections{    NSLog(@"开始录制...");}-(void)captureOutput:(AVCaptureFileOutput *)captureOutput didFinishRecordingToOutputFileAtURL:(NSURL *)outputFileURL fromConnections:(NSArray *)connections error:(NSError *)error{    NSLog(@"视频录制完成.");        [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:nil];        [self startCapture];        //视频录入完成之后在后台将视频存储到相//    [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{//        [PHAssetChangeRequest creationRequestForAssetFromVideoAtFileURL:outputFileURL];//    } completionHandler:^(BOOL success, NSError * _Nullable error) {//        if (error) {//            NSLog(@"保存视频到相簿过程中发生错误，错误信息：%@",error.localizedDescription);//        }else {//            NSLog(@"成功保存视频到相簿.");//        }//    }];    }-(void)saveAllVideoToPoto {    NSArray *arr = [self getAllFile];    for (NSString *str in arr) {        NSURL *fileUrl=[NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/%@",[self getVideoPathCache],str]];        [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{            [PHAssetChangeRequest creationRequestForAssetFromVideoAtFileURL:fileUrl];        } completionHandler:^(BOOL success, NSError * _Nullable error) {            if (error) {                NSLog(@"保存视频到相簿过程中发生错误，错误信息：%@",error.localizedDescription);            }else {                NSLog(@"成功保存视频到相簿.");            }        }];    }}-(void)deleteAllVideo {    NSArray *arr = [self getAllFile];    for (NSString *str in arr) {        NSString *file = [NSString stringWithFormat:@"%@/%@",[self getVideoPathCache],str];        NSFileManager *fileManager = [NSFileManager defaultManager];       BOOL is = [fileManager removeItemAtPath:file error:nil];        if (!is) {            NSLog(@"删除文件错误");        }    }    }#pragma mark - 视频地址- (NSString *)getVideoPathCache{    NSString *videoCache = [NSTemporaryDirectory() stringByAppendingPathComponent:@"videos"] ;    BOOL isDir = NO;    NSFileManager *fileManager = [NSFileManager defaultManager];    BOOL existed = [fileManager fileExistsAtPath:videoCache isDirectory:&isDir];    if ( !(isDir == YES && existed == YES) ) {        [fileManager createDirectoryAtPath:videoCache withIntermediateDirectories:YES attributes:nil error:nil];    };    return videoCache;}- (NSString *)getVideoNameWithType:(NSString *)fileType {        NSTimeInterval now = [[NSDate date] timeIntervalSince1970];    NSDateFormatter * formatter = [[NSDateFormatter alloc] init];    [formatter setDateFormat:@"HHmmss"];    NSDate * NowDate = [NSDate dateWithTimeIntervalSince1970:now];    ;    NSString * timeStr = [formatter stringFromDate:NowDate];    NSString *fileName = [NSString stringWithFormat:@"video_%@.%@",timeStr,fileType];    return fileName;}-(NSArray *)getAllFile {    NSArray *files = [[NSFileManager defaultManager] subpathsOfDirectoryAtPath:[self getVideoPathCache] error:nil];    return files;}#pragma mark - Device init Method//捕获到的视频呈现的layer- (AVCaptureVideoPreviewLayer *)previewLayer {    if (_previewLayer == nil) {        //通过AVCaptureSession初始化        AVCaptureVideoPreviewLayer *preview = [[AVCaptureVideoPreviewLayer alloc] initWithSession:self.captureSession];        //设置比例为铺满全屏        preview.videoGravity = AVLayerVideoGravityResizeAspectFill;        _previewLayer = preview;    }    return _previewLayer;}//捕获视频的会话- (AVCaptureSession *)captureSession{    if(_captureSession == nil)    {        _captureSession = [[AVCaptureSession alloc] init];                //设置分辨率        if ([_captureSession canSetSessionPreset:AVCaptureSessionPreset1280x720]) {            _captureSession.sessionPreset=AVCaptureSessionPreset1280x720;        }                //添加后置摄像头的输入        if ([_captureSession canAddInput:self.backCameraInput]) {            [_captureSession addInput:self.backCameraInput];        }                //添加后置麦克风的输入        if ([_captureSession canAddInput:self.audioMicInput]) {            [_captureSession addInput:self.audioMicInput];        }                //将设备输出添加到会话中        if ([_captureSession canAddOutput:self.captureMovieFileOutput]) {            [_captureSession addOutput:self.captureMovieFileOutput];        }                //照片输出流        if ([_captureSession canAddOutput:self.stillImageOutput]) {            [_captureSession addOutput:self.stillImageOutput];        }                //设置视频录制的方向        self.videoConnection.videoOrientation = AVCaptureVideoOrientationPortrait;    }    return _captureSession;}//后置摄像头输入- (AVCaptureDeviceInput *)backCameraInput {    if (_backCameraInput == nil) {        NSError *error;        _backCameraInput = [[AVCaptureDeviceInput alloc] initWithDevice:[self backCamera] error:&error];        if (error) {            NSLog(@"获取后置摄像头失败~%d",[self isAvailableWithCamera]);        }    }    return _backCameraInput;}//前置摄像头输入- (AVCaptureDeviceInput *)frontCameraInput {    if (_frontCameraInput == nil) {        NSError *error;        _frontCameraInput = [[AVCaptureDeviceInput alloc] initWithDevice:[self frontCamera] error:&error];        if (error) {            NSLog(@"获取前置摄像头失败~");        }    }    return _frontCameraInput;}//麦克风输入- (AVCaptureDeviceInput *)audioMicInput {    if (_audioMicInput == nil) {        AVCaptureDevice *mic = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeAudio];        NSError *error;        _audioMicInput = [AVCaptureDeviceInput deviceInputWithDevice:mic error:&error];        if (error) {                        NSLog(@"获取麦克风失败~%d",[self isAvailableWithMic]);        }    }    return _audioMicInput;}//照片输出流-(AVCaptureStillImageOutput *)stillImageOutput {    if (!_stillImageOutput) {        _stillImageOutput = [[AVCaptureStillImageOutput alloc] init];        // 这是输出流的设置参数AVVideoCodecJPEG参数表示以JPEG的图片格式输出图片        NSDictionary *outputSettings = [[NSDictionary alloc] initWithObjectsAndKeys:AVVideoCodecJPEG, AVVideoCodecKey, nil];        [_stillImageOutput setOutputSettings:outputSettings];    }    return _stillImageOutput;}//初始化设备输出对象，用于获得输出数据- (AVCaptureMovieFileOutput *)captureMovieFileOutput{  if(_captureMovieFileOutput == nil)  {      _captureMovieFileOutput = [[AVCaptureMovieFileOutput alloc]init];  }    return _captureMovieFileOutput;}//视频连接- (AVCaptureConnection *)videoConnection {    _videoConnection = [self.captureMovieFileOutput connectionWithMediaType:AVMediaTypeVideo];    if ([_videoConnection isVideoStabilizationSupported ]) {        _videoConnection.preferredVideoStabilizationMode=AVCaptureVideoStabilizationModeAuto;    }    return _videoConnection;}//返回前置摄像头- (AVCaptureDevice *)frontCamera {    return [self cameraWithPosition:AVCaptureDevicePositionFront];}//返回后置摄像头- (AVCaptureDevice *)backCamera {    return [self cameraWithPosition:AVCaptureDevicePositionBack];}//用来返回是前置摄像头还是后置摄像头- (AVCaptureDevice *)cameraWithPosition:(AVCaptureDevicePosition) position {    //返回和视频录制相关的所有默认设备    NSArray *devices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo];    //遍历这些设备返回跟position相关的设备    for (AVCaptureDevice *device in devices) {        if ([device position] == position) {            return device;        }    }    return nil;}@end@implementation CameraTool(Authorization)- (BOOL)isAvailableWithCamera{    return [self isAvailableWithDeviveMediaType:AVMediaTypeVideo];}- (BOOL)isAvailableWithMic{    return [self isAvailableWithDeviveMediaType:AVMediaTypeAudio];}- (BOOL)isAvailableWithDeviveMediaType:(NSString *)mediaType{    AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];    if(status == ALAuthorizationStatusDenied||status == ALAuthorizationStatusRestricted)        return NO;    else        return YES;}@end

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ios 相机 录视频和拍照的封装 保存到相册

ios 相机录视频和拍照的封装保存到相册