我正在成功发送一个NSData流.下面的委托方法是获取该流并附加到NSMutableData self.data.如何获取这些数据并将其转换成UIView / AVCaptureVideoPreviewLayer(应显示视频)？我觉得我错过了另一个转换,AVCaptureSession> NSStream> MCSession> NSStream> ？
@H_404_2@- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)eventCode {
switch(eventCode) {
case NSStreamEventHasBytesAvailable:
{
if(!self.data) {
self.data = [NSMutableData data];
}
uint8_t buf[1024];
unsigned int len = 0;
len = [(NSInputStream *)stream read:buf maxLength:1024];
if(len) {
[self.data appendBytes:(const void *)buf length:len];
} else {
NSLog(@"no buffer!");
}
// Code here to take self.data and convert the NSData to UIView/Video
}
我发送流与此：
@H_404_2@-(void) captureOutput:(AVCaptureOutput*)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection*)connection { CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer); CVPixelBufferLockBaseAddress(imageBuffer,0); size_t bytesPerRow = CVPixelBufferGetBytesPerRow(imageBuffer); // size_t width = CVPixelBufferGetWidth(imageBuffer); size_t height = CVPixelBufferGetHeight(imageBuffer); void *src_buff = CVPixelBufferGetBaseAddress(imageBuffer); NSData *data = [NSData dataWithBytes:src_buff length:bytesPerRow * height]; CVPixelBufferUnlockBaseAddress(imageBuffer,0); NSError *error; self.oStream = [self.mySession startStreamWithName:@"videoOut" toPeer:[[self.mySession connectedPeers]objectAtIndex:0] error:&error]; self.oStream.delegate = self; [self.oStream scheduleInRunLoop:[NSRunLoop mainRunLoop] forMode:NSDefaultRunLoopMode]; [self.oStream open]; [self.oStream write:[data bytes] maxLength:[data length]]; // CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer( sampleBuffer ); CGSize imageSize = CVImageBufferGetEncodedSize( imageBuffer ); // also in the 'mediaSpecific' dict of the sampleBuffer NSLog( @"frame captured at %.fx%.f",imageSize.width,imageSize.height ); }解决方法
我想你需要AVCaptureManager,看看下面的代码是否适合你..
@H_404_2@AVCamCaptureManager *manager = [[AVCamCaptureManager alloc] init];
[self setCaptureManager:manager];
[[self captureManager] setDelegate:self];
if ([[self captureManager] setupSession]) {
// Create video preview layer and add it to the UI
AVCaptureVideoPreviewLayer *newCaptureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:[[self captureManager] session]];
UIView *view = self.videoPreviewView;//Add a view in XIB where you want to show video
CALayer *viewLayer = [view layer];
[viewLayer setMasksToBounds:YES];
CGRect bounds = [view bounds];
[newCaptureVideoPreviewLayer setFrame:bounds];
[newCaptureVideoPreviewLayer setVideoGravity:AVLayerVideoGravityResizeAspectFill];
[viewLayer insertSublayer:newCaptureVideoPreviewLayer below:[[viewLayer sublayers] objectAtIndex:0]];
[self setCaptureVideoPreviewLayer:newCaptureVideoPreviewLayer];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0),^{
[[[self captureManager] session] startRunning];
});
}
管理代表
@H_404_2@- (void)captureManager:(AVCamCaptureManager *)captureManager didFailWithError:(NSError *)error { } - (void)captureManagerRecordingBegan:(AVCamCaptureManager *)captureManager { } - (void)captureManagerRecordingFinished:(AVCamCaptureManager *)captureManager outputURL:(NSURL *)url { } - (void)captureManagerStillImageCaptured:(AVCamCaptureManager *)captureManager { } - (void)captureManagerDeviceConfigurationChanged:(AVCamCaptureManager *)captureManager { }我希望它有帮助.
