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Add possibility to save QR code in PNG file format

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This commit is contained in:
Ansa89
2016-10-05 11:55:45 +02:00
parent e17fa89d8f
commit 958df9f2e8
12 changed files with 234 additions and 67 deletions
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80
src/osx_video.m
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@ -127,19 +127,20 @@ void bgrxtoyuv420(uint8_t *plane_y, uint8_t *plane_u, uint8_t *plane_v, uint8_t
}
- (instancetype)initWithDeviceNames:
(char **)device_names AmtDevices:
(int *)size {
(char **)device_names AmtDevices:
(int *)size
{
_session = [[AVCaptureSession alloc] init];
NSArray *devices = [AVCaptureDevice devicesWithMediaType: AVMediaTypeVideo];
NSArray *devices = [AVCaptureDevice devicesWithMediaType: AVMediaTypeVideo];
int i;
for (i = 0; i < [devices count]; ++i) {
AVCaptureDevice *device = [devices objectAtIndex: i];
AVCaptureDevice *device = [devices objectAtIndex: i];
char *video_input_name;
NSString *localizedName = [device localizedName];
video_input_name = (char *)malloc(strlen([localizedName cStringUsingEncoding: NSUTF8StringEncoding]) + 1);
strcpy(video_input_name, (char *)[localizedName cStringUsingEncoding: NSUTF8StringEncoding]);
video_input_name = (char *)malloc(strlen([localizedName cStringUsingEncoding: NSUTF8StringEncoding]) + 1);
strcpy(video_input_name, (char *)[localizedName cStringUsingEncoding: NSUTF8StringEncoding]);
device_names[i] = video_input_name;
}
@ -151,7 +152,8 @@ strcpy(video_input_name, (char *)[localizedName cStringUsingEncoding: NSUTF8Stri
return self;
}
- (void)dealloc {
- (void)dealloc
{
pthread_mutex_destroy(&_frameLock);
[_session release];
[_linkerVideo release];
@ -160,16 +162,17 @@ strcpy(video_input_name, (char *)[localizedName cStringUsingEncoding: NSUTF8Stri
}
- (int)openVideoDeviceIndex:
(uint32_t)device_idx Width:
(uint16_t *)width Height:
(uint16_t *)height {
(uint32_t)device_idx Width:
(uint16_t *)width Height:
(uint16_t *)height
{
pthread_mutex_init(&_frameLock, NULL);
pthread_mutex_lock(&_frameLock);
_processingQueue = dispatch_queue_create("Toxic processing queue", DISPATCH_QUEUE_SERIAL);
NSArray *devices = [AVCaptureDevice devicesWithMediaType: AVMediaTypeVideo];
AVCaptureDevice *device = [devices objectAtIndex: device_idx];
NSArray *devices = [AVCaptureDevice devicesWithMediaType: AVMediaTypeVideo];
AVCaptureDevice *device = [devices objectAtIndex: device_idx];
NSError *error = NULL;
AVCaptureInput *input = [[AVCaptureDeviceInput alloc] initWithDevice: device error: &error];
AVCaptureInput *input = [[AVCaptureDeviceInput alloc] initWithDevice: device error: &error];
if ( error != NULL ) {
[input release];
@ -177,7 +180,7 @@ AVCaptureInput *input = [[AVCaptureDeviceInput alloc] initWithDevice: device err
}
[_session beginConfiguration];
[_session addInput: input];
[_session addInput: input];
//_session.sessionPreset = AVCaptureSessionPreset640x480;
//*width = 640;
//*height = 480;
@ -200,19 +203,20 @@ AVCaptureInput *input = [[AVCaptureDeviceInput alloc] initWithDevice: device err
}
_linkerVideo = [[AVCaptureVideoDataOutput alloc] init];
[_linkerVideo setSampleBufferDelegate: self queue: _processingQueue];
[_linkerVideo setSampleBufferDelegate: self queue: _processingQueue];
// TODO possibly get a better pixel format
if (_shouldMangleDimensions) {
[_linkerVideo setVideoSettings: @ {
[_linkerVideo setVideoSettings: @ {
(id)kCVPixelBufferPixelFormatTypeKey: @(kCVPixelFormatType_32BGRA),
(id)kCVPixelBufferWidthKey: @640,
(id)kCVPixelBufferHeightKey: @480
}];
} else {
[_linkerVideo setVideoSettings: @{(id)kCVPixelBufferPixelFormatTypeKey: @(kCVPixelFormatType_32BGRA)}];
[_linkerVideo setVideoSettings: @ {(id)kCVPixelBufferPixelFormatTypeKey: @(kCVPixelFormatType_32BGRA)}];
}
[_session addOutput: _linkerVideo];
[_session addOutput: _linkerVideo];
[_session startRunning];
pthread_mutex_unlock(&_frameLock);
@ -220,21 +224,23 @@ AVCaptureInput *input = [[AVCaptureDeviceInput alloc] initWithDevice: device err
}
- (void)closeVideoDeviceIndex:
(uint32_t)device_idx {
NSArray *devices = [AVCaptureDevice devicesWithMediaType: AVMediaTypeVideo];
AVCaptureDevice *device = [devices objectAtIndex: device_idx];
(uint32_t)device_idx
{
NSArray *devices = [AVCaptureDevice devicesWithMediaType: AVMediaTypeVideo];
AVCaptureDevice *device = [devices objectAtIndex: device_idx];
NSError *error = NULL;
AVCaptureInput *input = [[AVCaptureDeviceInput alloc] initWithDevice: device error: &error];
AVCaptureInput *input = [[AVCaptureDeviceInput alloc] initWithDevice: device error: &error];
[_session stopRunning];
[_session removeOutput: _linkerVideo];
[_session removeInput: input];
[_session removeOutput: _linkerVideo];
[_session removeInput: input];
[_linkerVideo release];
}
- (void)captureOutput:
(AVCaptureOutput *)captureOutput didOutputSampleBuffer:
(CMSampleBufferRef)sampleBuffer fromConnection:
(AVCaptureConnection *)connection {
(AVCaptureOutput *)captureOutput didOutputSampleBuffer:
(CMSampleBufferRef)sampleBuffer fromConnection:
(AVCaptureConnection *)connection
{
pthread_mutex_lock(&_frameLock);
CVImageBufferRef img = CMSampleBufferGetImageBuffer(sampleBuffer);
@ -248,15 +254,17 @@ AVCaptureInput *input = [[AVCaptureDeviceInput alloc] initWithDevice: device err
// we're not going to do anything to it, so it's safe to lock it always
CVPixelBufferLockBaseAddress(_currentFrame, kCVPixelBufferLock_ReadOnly);
}
pthread_mutex_unlock(&_frameLock);
}
- (int)getVideoFrameY:
(uint8_t *)y U:
(uint8_t *)u V:
(uint8_t *)v Width:
(uint16_t *)width Height:
(uint16_t *)height {
(uint8_t *)y U:
(uint8_t *)u V:
(uint8_t *)v Width:
(uint16_t *)width Height:
(uint16_t *)height
{
if (!_currentFrame) {
return -1;
}
@ -293,7 +301,7 @@ static OSXVideo *_OSXVideo = nil;
int osx_video_init(char **device_names, int *size)
{
_OSXVideo = [[OSXVideo alloc] initWithDeviceNames: device_names AmtDevices: size];
_OSXVideo = [[OSXVideo alloc] initWithDeviceNames: device_names AmtDevices: size];
if ( _OSXVideo == nil )
return -1;
@ -312,12 +320,12 @@ int osx_video_open_device(uint32_t selection, uint16_t *width, uint16_t *height)
if ( _OSXVideo == nil )
return -1;
return [_OSXVideo openVideoDeviceIndex: selection Width: width Height: height];
return [_OSXVideo openVideoDeviceIndex: selection Width: width Height: height];
}
void osx_video_close_device(uint32_t device_idx)
{
[_OSXVideo closeVideoDeviceIndex: device_idx];
[_OSXVideo closeVideoDeviceIndex: device_idx];
}
int osx_video_read_device(uint8_t *y, uint8_t *u, uint8_t *v, uint16_t *width, uint16_t *height)
@ -325,7 +333,7 @@ int osx_video_read_device(uint8_t *y, uint8_t *u, uint8_t *v, uint16_t *width, u
if ( _OSXVideo == nil )
return -1;
return [_OSXVideo getVideoFrameY: y U: u V: v Width: width Height: height];
return [_OSXVideo getVideoFrameY: y U: u V: v Width: width Height: height];
}
/*
* End of C-interface for OSXVideo