// ViewController.h
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@property (weak, nonatomic) IBOutlet UIImageView *cameraView;
@property (strong) IBOutlet UILabel *label;
@end
// ViewController.m
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
@synthesize cameraView;
@synthesize label;
NSMutableData *dataResponse; // buffer for accumulating data
- (void)viewDidLoad
{ [super viewDidLoad];
dataResponse = [NSMutableData dataWithCapacity:100];
NSString *cameraURL = @"http://192.168.1.160:554/video.mjpg"; // URL request
NSURL *url = [NSURL URLWithString:cameraURL];
NSURLRequest *requestURLcamera = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:requestURLcamera delegate:self]; // connecting
if (!connection)
{ dataResponse = nil; // if no connection - release dataResponse
self.label.text = @"No connection!";}
else { self.label.text = @"Connection OK!"; };
}
- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning];}
- (void)connection: (NSURLConnection *) connection didReceiveData:(NSData *)data
{ [dataResponse appendData:data]; } // accumulating data
- (void)connection: (NSURLConnection *) connection didReceiveResponse:(NSURLResponse *)response
{
@autoreleasepool
{
UIImage *imageZ = [UIImage imageWithData:dataResponse]; // creating image
self.cameraView.image = imageZ; // image to UIImageView
}
[dataResponse setLength:0];
}
@end// ViewController.m
#import "ViewController.h"
#import <WebKit/WebKit.h>
#import <CFNetwork/CFNetwork.h>
@interface ViewController ()
@end
@implementation ViewController
NSMutableData *_receivedData; // buffer for accumulating data
#define END_MARKER_BYTES { 0xFF, 0xD9 }
static NSData *_endMarkerData = nil;
……………………….
- (IBAction)getVideo:(id)sender // прием видеопотока по кнопке
{ NSString *finalURLcamera = @"http://"; NSString *urlIP = [_cameraIP text]; // IP-адрес камеры - в TextField'e cameraIP
finalURLcamera = [finalURLcamera stringByAppendingString:urlIP]; // конструируем полный URL
finalURLcamera = [finalURLcamera stringByAppendingString:@":554/video.mjpg"];
NSURL *url = [NSURL URLWithString:finalURLcamera];
NSURLRequest *requestURLcamera = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:requestURLcamera delegate:self]; // connecting
uint8_t endMarker[2] = END_MARKER_BYTES;
_endMarkerData = [[NSData alloc] initWithBytes:endMarker length:2];
}
………………………………….
// ****************** прием видеопотока ****************
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{ if (!_receivedData) { _receivedData = [NSMutableData new]; }
[_receivedData appendData:data];
NSRange endRange = [_receivedData rangeOfData:_endMarkerData options:0
range:NSMakeRange(0, _receivedData.length)];
if (endRange.location == NSNotFound) { return; }
@autoreleasepool
{ UIImage *receivedImage = [UIImage imageWithData:_receivedData];
if (receivedImage) { self.cameraWindow.image = receivedImage; } // cameraWindow - это UIImageView
}
[_receivedData setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{ _receivedData = [[NSMutableData alloc] init]; }
……………………..
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