4
J'essaie d'enregistrer une vidéo de la caméra frontale de l'iPhone 4 en utilisant AVFoundation Framework avec l'aide d'échantillons WWDC que j'ai obtenu à partir du programme développeur iPhone. Mais je n'arrive toujours pas à le faire fonctionner .. la vidéo n'est pas enregistrée ou mayb enregistrée dans ma bibliothèque iPhone ... voici le code que j'essaie d'utiliser ... il serait vraiment utile si quelqu'un culd m'aider avec le problème j'ai??Enregistrement vidéo de la caméra avant iPhone 4?
-(void)recordVideo
{
AVCaptureDeviceInput *videoInput = [[AVCaptureDeviceInput alloc] initWithDevice:[self backFacingCamera] error:nil];
AVCaptureMovieFileOutput *movieFileOutput = [[AVCaptureMovieFileOutput alloc] init];
AVCaptureSession *session = [[AVCaptureSession alloc] init];
[session addInput:videoInput];
[session addOutput:movieFileOutput];
[movieFileOutput release];
if (![session isRunning])
{
[self performSelector:@selector(startRecording) withObject:nil afterDelay:1.0];
[session startRunning];
}
}
- (void) startRecording
{
NSLog(@"start recording");
AVCaptureConnection *videoConnection = [playVideo connectionWithMediaType:AVMediaTypeVideo fromConnections:[[self movieFileOutput] connections]];
if ([videoConnection isVideoOrientationSupported]) {
[videoConnection setVideoOrientation:[self orientation]];
}
[[self movieFileOutput] startRecordingToOutputFileURL:[self tempFileURL]
recordingDelegate:self];
}
- (void) stopRecording
{
NSLog(@"stop recording");
[[self movieFileOutput] stopRecording];
}
- (NSURL *) tempFileURL
{
NSLog(@"temp file url");
NSString *outputPath = [[NSString alloc] initWithFormat:@"%@%@", NSTemporaryDirectory(), @"output.mov"];
NSURL *outputURL = [[NSURL alloc] initFileURLWithPath:outputPath];
NSFileManager *fileManager = [NSFileManager defaultManager];
if ([fileManager fileExistsAtPath:outputPath]) {
NSLog(@"exists");
}
[outputPath release];
return [outputURL autorelease];
}
- (void) setConnectionWithMediaType:(NSString *)mediaType enabled:(BOOL)enabled;
{
[[playVideo connectionWithMediaType:AVMediaTypeVideo fromConnections:[[self movieFileOutput] connections]] setEnabled:enabled];
}
+ (AVCaptureConnection *)connectionWithMediaType:(NSString *)mediaType fromConnections:(NSArray *)connections;
{
NSLog(@"connection with media type");
for (AVCaptureConnection *connection in connections) {
for (AVCaptureInputPort *port in [connection inputPorts]) {
if ([[port mediaType] isEqual:mediaType]) {
return [[connection retain] autorelease];
}
}
}
return nil;
}
@implementation recordVideo (Internal)
- (AVCaptureDevice *) cameraWithPosition:(AVCaptureDevicePosition) position
{
NSArray *devices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo];
for (AVCaptureDevice *device in devices) {
if ([device position] == position) {
return device;
}
}
return nil;
}
- (AVCaptureDevice *) backFacingCamera
{
NSLog(@"back");
return [self cameraWithPosition:AVCaptureDevicePositionBack];
}
- (AVCaptureDevice *) frontFacingCamera
{
NSLog(@"front ");
return [self cameraWithPosition:AVCaptureDevicePositionFront];
}
@end
@implementation recordVideo (AVCaptureFileOutputRecordingDelegate)
- (void) captureOutput:(AVCaptureFileOutput *)captureOutput
didStartRecordingToOutputFileAtURL:(NSURL *)fileURL
fromConnections:(NSArray *)connections
{
NSLog(@"did start recording");
}
- (void) captureOutput:(AVCaptureFileOutput *)captureOutput
didFinishRecordingToOutputFileAtURL:(NSURL *)outputFileURL
fromConnections:(NSArray *)connections
error:(NSError *)error
{
NSLog(@"did finish recording output file");
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
if ([library videoAtPathIsCompatibleWithSavedPhotosAlbum:outputFileURL])
{
[library writeVideoAtPathToSavedPhotosAlbum:outputFileURL
completionBlock:^(NSURL *assetURL, NSError *error){
if (error && [delegate respondsToSelector:@selector(assetLibraryError:forURL:)]) {
[delegate assetLibraryError:error forURL:assetURL];
}
}];
}
else {
}
[library release];
}
@end
+1. N'ignorez pas les erreurs pendant le débogage. – JoePasq