How to do recording for main view? - iphone

Question

There is recoding in my app.
I have created a custom ScreenCapture View to do recoding.
Now i want to record a video for main view. (i.e on self.view),but it is not working.
I have used following code to do recording of my custom view :
- (IBAction)btnRecording_Pressed:(id)sender {
if (Isrecording ==YES)
{
//
// imgDustbin.hidden=YES;
// [[NSUserDefaults standardUserDefaults ] setValue:#"NO" forKey:#"DUSTBIN"];
//---
[voiceRecorder stop];
[captureview stopRecording];
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
NSError *err = nil;
[audioSession setCategory :AVAudioSessionCategoryPlayAndRecord error:&err];
if(err)
{
NSLog(#"audioSession: %# %d %#", [err domain], [err code], [[err userInfo] description]);
return;
}
[audioSession setActive:YES error:&err];
err = nil;
if(err){
NSLog(#"audioSession: %# %d %#", [err domain], [err code], [[err userInfo] description]);
return;
}
recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue :[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
[recordSetting setValue :[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];
// NSString *recorderFilePath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];//26
NSString *recorderFilePath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex:0];
recorderFilePath = [recorderFilePath stringByAppendingPathComponent:#"tempRecording.caf"];
NSURL *urls = [NSURL fileURLWithPath:recorderFilePath];
err = nil;
voiceRecorder = [[ AVAudioRecorder alloc] initWithURL:urls settings:recordSetting error:&err];
//[recorder setMeteringEnabled:YES];
if(!voiceRecorder){
NSLog(#"recorder: %# %d %#", [err domain], [err code], [[err userInfo] description]);
UIAlertView *alert =
[[UIAlertView alloc] initWithTitle: #"Warning"
message: [err localizedDescription]
delegate: nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
[alert release];
return;
}
//prepare to record
[voiceRecorder setDelegate:self];
[voiceRecorder prepareToRecord];
//scrren short of screen
if ([[UIScreen mainScreen] respondsToSelector:#selector(scale)])
UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, NO, [UIScreen mainScreen].scale);
else
UIGraphicsBeginImageContext(self.view.bounds.size);
[captureview.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData * imageData = UIImageJPEGRepresentation(viewImage, 1.0);
// NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);//26
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
documentsDirectory = [documentsDirectory stringByAppendingPathComponent:#"VideoScreen.jpg"];
[imageData writeToFile:documentsDirectory atomically:YES];
//--------------------
[voiceRecorder record];
[captureview performSelector:#selector(startRecording) withObject:nil afterDelay:0];
Isrecording =NO;
[btnRecord setTitle:#"Stop" forState:UIControlStateNormal];
}
else if (!Isrecording)
{
//
imgDustbin.hidden =NO;
[[NSUserDefaults standardUserDefaults ] setValue:#"YES" forKey:#"DUSTBIN"];
//------
[voiceRecorder stop];
[captureview stopRecording];
[self createVideo];
Isrecording=YES;
[btnRecord setTitle:#"Record" forState:UIControlStateNormal];
}
}
how to do this ?
Thanks..

Answer 1

I've removed some project specific code for my setup, but if you have your input and outputs setup the previewing/preview layer code is what you are looking for. You add a sublayer that shows what video will be recorded.
- (void)setupSession{
// create a capture session set session preset
// get a camera, front facing if possible
// check to see if camera is available
// create input
// create output
// add output
[session beginConfiguration];
[session addInput:input];
[session addOutput:output];
[session commitConfiguration];
// configure orientation
connection = [output connectionWithMediaType:AVMediaTypeVideo];
//check to make sure you can record
// Important for you, the preview layer
// add preview layer
captureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session];
if ([captureVideoPreviewLayer isOrientationSupported])
{
[captureVideoPreviewLayer setOrientation:[[UIDevice currentDevice] orientation]];
} else {
NSLog(#"Cannot set preview orientation");
}
[captureVideoPreviewLayer setFrame:[_previewView bounds]];
//add sublayer to mainview where you are setting your recording from
[[self.view layer] addSublayer:captureVideoPreviewLayer];
// start session
[session startRunning];
}