NSData のストリームを正常に送信しています。以下のデリゲート メソッドは、そのストリームを取得し、NSMutableData self.data に追加します。このデータを取得して UIView/AVCaptureVideoPreviewLayer (ビデオを表示する必要があります) にするにはどうすればよいですか? 別の変換、AVCaptureSession > NSStream > MCSession > NSStream > が欠けているように感じます。
- (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
}
これでストリームを送信します:
-(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 );
}