关于Replaykit日志/写入文件的问题的问题.

1.replaykit写入的文件怎么获取...

思路:利用Appgroup. 先把文件写入到沙盒,然后在扩展还在运行的时候,把扩展的日志copy到沙盒.
扩展代码:

#import <Foundation/Foundation.h>
#import <AVFoundation/AVFoundation.h>

NS_ASSUME_NONNULL_BEGIN

@interface TImage : NSObject

@property(nonatomic, assign) NSTimeInterval lastTime;
@property(nonatomic, assign) BOOL isBG;

+ (void)saveToImage:(CMSampleBufferRef)sampleBuffer;
+ (void)saveToFile:(NSString *)fileName;
+ (void)savePixel:(CMSampleBufferRef)sampleBuffer;
+ (void)stopFile;

@end

#import "TImage.h"
#import <UIKit/UIKit.h>
#import <CoreFoundation/CoreFoundation.h>

static NSFileHandle *fielHandle11 = nil;
static NSURL *fileWriteUrl = nil;
static NSInteger imageCount = 0;


@implementation TImage

- (instancetype)init
{
    self = [super init];
    if (self) {
        CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(),
                                        (__bridge const void *)(self),
                                        onDarwinReplayKit2PushStart,
                                        CFSTR("ddd"),
                                        NULL,
                                        CFNotificationSuspensionBehaviorDeliverImmediately);

        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleReplayKit2PushStartNotification:) name:@"Cocoa_ReplayKit2_Push_Start" object:nil];
    }
    return self;
}

static void onDarwinReplayKit2PushStart(CFNotificationCenterRef center,
                                      void *observer, CFStringRef name,
                                      const void *object, CFDictionaryRef
                                      userInfo)
{
//转到 cocoa 层框架处理
  [[NSNotificationCenter defaultCenter] postNotificationName:@"Cocoa_ReplayKit2_Push_Start" object:nil];
}

- (void)handleReplayKit2PushStartNotification:(NSNotification*)noti
{
    NSLog(@"lasttime begin");
    self.lastTime = [NSDate timeIntervalSinceReferenceDate];
    
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
          //2.0秒后追加任务代码到主队列，并开始执行
        self.lastTime = 0;
          NSLog(@"lasttime end");
      });
    
    self.isBG = !self.isBG;

}

+ (void)saveToImage:(CMSampleBufferRef)sampleBuffer {
    
    if (imageCount > 0) {
        [fielHandle11 closeFile];
        return;
    }
    CVImageBufferRef buffer;
    buffer = CMSampleBufferGetImageBuffer(sampleBuffer);
    UIImage *image = [[self class] CVPixelBufferToImage:buffer rotation:0];
    NSData *data = UIImageJPEGRepresentation(image, 1);
    [fielHandle11 writeData:data];
    [fielHandle11 seekToEndOfFile];    
}

+ (UIImage *)CVPixelBufferToImage:(CVPixelBufferRef)pixelBuffer rotation:(int)rotation {
    size_t width, height;
    CGImagePropertyOrientation orientation;
    switch (rotation) {
        case 0:
            width = CVPixelBufferGetWidth(pixelBuffer);
            height = CVPixelBufferGetHeight(pixelBuffer);
            orientation = kCGImagePropertyOrientationUp;
            break;
        case 90:
            width = CVPixelBufferGetHeight(pixelBuffer);
            height = CVPixelBufferGetWidth(pixelBuffer);
            orientation = kCGImagePropertyOrientationRight;
            break;
        case 180:
            width = CVPixelBufferGetWidth(pixelBuffer);
            height = CVPixelBufferGetHeight(pixelBuffer);
            orientation = kCGImagePropertyOrientationDown;
            break;
        case 270:
            width = CVPixelBufferGetHeight(pixelBuffer);
            height = CVPixelBufferGetWidth(pixelBuffer);
            orientation = kCGImagePropertyOrientationLeft;
            break;
        default:
            return nil;
    }
    CIImage *coreImage = [[CIImage imageWithCVPixelBuffer:pixelBuffer] imageByApplyingOrientation:orientation];
    CIContext *temporaryContext = [CIContext contextWithOptions:nil];
    CGImageRef videoImage = [temporaryContext createCGImage:coreImage
                                                   fromRect:CGRectMake(0, 0, width, height)];
    
    
    UIImage *finalImage = [[UIImage alloc] initWithCGImage:videoImage];
    CGImageRelease(videoImage);
    return finalImage;
}

+ (void)saveToFile:(NSString *)sourcePath {
    
//    NSFileManager * fileManager = [NSFileManager defaultManager];
//    [fileManager createFileAtPath:sourcePath contents:nil attributes:nil];
    
    NSURL *groupURL = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:@"你们的APPGroup"];
    NSURL *fileURL = [groupURL URLByAppendingPathComponent:@"Library/Caches/system.yuv"]; //Library/Caches/system.yuv
    NSLog(@"%@", fileURL.path);
    

     //写入文件
//     [@"text" writeToURL:fileURL atomically:YES encoding:NSUTF8StringEncoding error:nil];
//    NSData *data = [@"fuck you111" dataUsingEncoding:NSUTF8StringEncoding];
//    [data writeToURL:fileURL atomically:YES];
    

    NSFileManager * fileManager = [NSFileManager defaultManager];
    [fileManager createFileAtPath:fileURL.path contents:nil attributes:nil];

    NSFileHandle *fielHandle = [NSFileHandle fileHandleForUpdatingAtPath:fileURL.path];
    fielHandle11 = fielHandle;
    [fielHandle seekToEndOfFile];

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(50 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
          //2.0秒后追加任务代码到主队列，并开始执行
          //打印当前线程
        [self stopFile];
          NSLog(@"stop saving to file");
      });
}
+ (void)stopFile {
    imageCount = 1;
}

+ (void)savePixel:(CMSampleBufferRef)sampleBuffer {
    
    if (imageCount > 0) {
        [fielHandle11 closeFile];
        return;
    }
    
    CVImageBufferRef texBuf = CMSampleBufferGetImageBuffer(sampleBuffer);
    
    const int kFlags = 0;
    if (CVPixelBufferLockBaseAddress(texBuf, kFlags) != kCVReturnSuccess) {
        printf("failed to lock base address\n");
        return;
    }
    
    const int kYPlaneIndex = 0;
    const int kUVPlaneIndex = 1;
    uint8_t* ybuf          = (uint8_t*)CVPixelBufferGetBaseAddressOfPlane(texBuf, kYPlaneIndex);
    int yPlaneBytesPerRow  = (int)CVPixelBufferGetBytesPerRowOfPlane(texBuf, kYPlaneIndex);
    int yPlaneWidth        = (int)CVPixelBufferGetWidthOfPlane      (texBuf, kYPlaneIndex);
    int yPlaneHeight       = (int)CVPixelBufferGetHeightOfPlane     (texBuf, kYPlaneIndex);
    uint8_t* cbuf          = (uint8_t*)CVPixelBufferGetBaseAddressOfPlane(texBuf, kUVPlaneIndex);
    int uvPlaneBytesPerRow = (int)CVPixelBufferGetBytesPerRowOfPlane(texBuf, kUVPlaneIndex);
    
    NSLog(@"%@, %@, %@, %@", @(yPlaneBytesPerRow), @(yPlaneWidth), @(yPlaneHeight), @(uvPlaneBytesPerRow));
    NSData *data = [NSData dataWithBytes:ybuf length:yPlaneHeight * yPlaneBytesPerRow];
    
    [fielHandle11 writeData:data];
    [fielHandle11 seekToEndOfFile];
    data = [NSData dataWithBytes:cbuf length:yPlaneHeight * uvPlaneBytesPerRow / 2];
    [fielHandle11 writeData:data];
    [fielHandle11 seekToEndOfFile];
    CVPixelBufferUnlockBaseAddress(texBuf, kFlags);
}

因为我是录屏写入buffer 数据的,所以,我在录屏开始的时候调用了

saveToFile

然后我在每一帧回调的时候都调用了.起到保存每一帧的问题..

+ (void)savePixel:(CMSampleBufferRef)sampleBuffer

延时结束是因为录制的yuv 数据很大.我们在实际开发者中可根据这个做修改.
最后在主进程进行文件的copy动作.切记 一定要扩展进程活跃的时候执行copy
最好是在主进程写一个按钮,点一下这个按钮就执行copy的动作!

-(void)copyBufferFile{
    NSURL *groupURL = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:@"你们的APPgroupID"];
    NSString *fileURL = [groupURL URLByAppendingPathComponent:@"Library/Caches/system.yuv"].path;
    BOOL a =   [[NSFileManager defaultManager] fileExistsAtPath:fileURL isDirectory:nil];
    if (!a) {
        return;
    }
    NSString *distDirectory = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject;
    NSString * dispatch = [NSString stringWithFormat:@"%@/system.yuv",distDirectory];
    [[NSFileManager defaultManager]removeItemAtPath:dispatch error:nil];
    NSError *error = nil;
    [[NSFileManager defaultManager]moveItemAtPath:fileURL toPath:dispatch error:&error];
    if (error) {
        NSLog(@"%@",error);
    }
}

这样就可以在主进程的沙盒文件拿到扩展进程的日志或者资源了.另说一句.Replaykit 有很多坑.后续我会慢慢整理出来. 因为就2个文件,就不上传git了.大佬们见谅一下.不过代码我已经完整的贴出来了.至于APPGroup 怎么搞,顺便说一句
选中项目的 targets 然后 点击 +capability 然后选择 appGroup 即可 图就不截了