Adding code to deal with audio output

modules/highgui/include/opencv2/highgui/cap_ios.h

@@ -68,6 +68,7 @@
 @property (nonatomic, readonly) BOOL captureSessionLoaded;
 
 @property (nonatomic, assign) int defaultFPS;
+@property (nonatomic, readonly) AVCaptureVideoPreviewLayer *captureVideoPreviewLayer;
 @property (nonatomic, assign) AVCaptureDevicePosition defaultAVCaptureDevicePosition;
 @property (nonatomic, assign) AVCaptureVideoOrientation defaultAVCaptureVideoOrientation;
 @property (nonatomic, assign) BOOL useAVCaptureVideoPreviewLayer;
@@ -110,7 +111,7 @@
 
 @end
 
-@interface CvVideoCamera : CvAbstractCamera<AVCaptureVideoDataOutputSampleBufferDelegate>
+@interface CvVideoCamera : CvAbstractCamera<AVCaptureVideoDataOutputSampleBufferDelegate, AVCaptureFileOutputRecordingDelegate>
 {
     AVCaptureVideoDataOutput *videoDataOutput;
 

modules/highgui/src/cap_ios_abstract_camera.mm

@@ -272,6 +272,14 @@
     } else {
         NSLog(@"[Camera] Error: could not set session preset");
     }
+
+    AVCaptureDevice *audioCaptureDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeAudio];
+    NSError *error = nil;
+    AVCaptureDeviceInput *audioInput = [AVCaptureDeviceInput deviceInputWithDevice:audioCaptureDevice error:&error];
+    if (audioInput) {
+        NSLog(@"Adding audio capture devices ");
+        [self.captureSession addInput:audioInput];
+    }
 }
 
 - (void)createCaptureDevice;

modules/highgui/src/cap_ios_video_camera.mm

@@ -41,14 +41,19 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;};
 
 
 
-@interface CvVideoCamera ()
+@interface CvVideoCamera () {
+    NSString* mediaPath;
+}
+
 
 - (void)createVideoDataOutput;
 - (void)createVideoFileOutput;
-
+- (void)createMovieFileOutput;
+- (NSString*) mediaFileString;
 
 @property (nonatomic, retain) CALayer *customPreviewLayer;
 @property (nonatomic, retain) AVCaptureVideoDataOutput *videoDataOutput;
+@property (nonatomic, retain) AVCaptureMovieFileOutput *movieFileOutput;
 
 @end
 
@@ -68,6 +73,7 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;};
 
 @synthesize customPreviewLayer;
 @synthesize videoDataOutput;
+@synthesize movieFileOutput;
 
 @synthesize recordVideo;
 @synthesize rotateVideo;
@@ -78,6 +84,7 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;};
 
 
 
+
 #pragma mark - Constructors
 
 - (id)initWithParentView:(UIView*)parent;
@@ -105,9 +112,18 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;};
         if ([[NSFileManager defaultManager] fileExistsAtPath:[self videoFileString]]) {
             [[NSFileManager defaultManager] removeItemAtPath:[self videoFileString] error:&error];
         }
+
         if (error == nil) {
             NSLog(@"[Camera] Delete file %@", [self videoFileString]);
         }
+
+#if 0
+        if ([[NSFileManager defaultManager] fileExistsAtPath:[self mediaFileString]]) {
+            [[NSFileManager defaultManager] removeItemAtPath:[self mediaFileString] error:&error];
+        }
+        
+        [self.movieFileOutput startRecordingToOutputFileURL:[self mediaFileURL] recordingDelegate:self];
+#endif
     }
 }
 
@@ -333,6 +349,25 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;};
 }
 
 
+- (void)createMovieFileOutput; 
+{
+    self.movieFileOutput  = [[AVCaptureMovieFileOutput alloc] init];
+    CMTime maxDuration = CMTimeMake(30*60, 1);
+    movieFileOutput.maxRecordedDuration = maxDuration;
+    movieFileOutput.minFreeDiskSpaceLimit = (1024L)*(1024L*1024L);
+    movieFileOutput.maxRecordedFileSize = (400L)*(1024L*1024L);
+
+    NSLog(@"createVideoFileOutput...");
+
+    if ([self.captureSession canAddOutput:movieFileOutput]) {
+        [captureSession addOutput:movieFileOutput];
+        NSLog(@"Successfully added movie output ");
+    }
+    else {
+        NSLog(@"Couldn't add movie output ");
+    }
+}
+
 
 - (void)createVideoFileOutput;
 {
@@ -378,6 +413,7 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;};
     [self createVideoDataOutput];
     if (self.recordVideo == YES) {
         [self createVideoFileOutput];
+        //[self createMovieFileOutput];
     }
 }
 
@@ -419,6 +455,24 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;};
     return pxbuffer;
 }
 
+
+- (void)captureOutput:(AVCaptureFileOutput *)captureOutput 
+        didFinishRecordingToOutputFileAtURL:(NSURL *)outputFileURL
+        fromConnections:(NSArray *)connections
+        error:(NSError *)error {
+
+#if 0
+    BOOL recordedSuccessfully = YES;
+    if ([error code] != noErr) {
+        // A problem occurred: Find out if the recording was successful.
+        id value = [[error userInfo] objectForKey:AVErrorRecordingSuccessfullyFinishedKey];
+        if (value) {
+            recordedSuccessfully = [value boolValue];
+        }
+    }
+#endif
+    NSLog(@"Capture File output done ");
+}
 #pragma mark - Protocol AVCaptureVideoDataOutputSampleBufferDelegate
 
 
@@ -601,7 +655,8 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;};
 
 - (NSURL *)videoFileURL;
 {
-    NSString *outputPath = [[NSString alloc] initWithFormat:@"%@%@", NSTemporaryDirectory(), @"output.mov"];
+    //NSString *outputPath = [[NSString alloc] initWithFormat:@"%@%@", NSTemporaryDirectory(), @"output.mov"];
+    NSString *outputPath = self.videoFileString;
     NSURL *outputURL = [NSURL fileURLWithPath:outputPath];
     NSFileManager *fileManager = [NSFileManager defaultManager];
     if ([fileManager fileExistsAtPath:outputPath]) {
@@ -611,6 +666,16 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;};
 }
 
 
+- (NSURL *)mediaFileURL;
+{
+    NSString *outputPath = self.mediaFileString;
+    NSURL *outputURL = [NSURL fileURLWithPath:outputPath];
+    NSFileManager *fileManager = [NSFileManager defaultManager];
+    if ([fileManager fileExistsAtPath:outputPath]) {
+        NSLog(@"file exists");
+    }
+    return outputURL;
+}
 
 - (NSString *)videoFileString;
 {
@@ -618,4 +683,9 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;};
     return outputPath;
 }
 
+
+- (NSString*) mediaFileString {
+    NSString *outputPath = [[NSString alloc] initWithFormat:@"%@-%@", NSTemporaryDirectory(), @"media.mov"];
+    return outputPath;
+}
 @end