//按照BGRA采集，转换为RGB24，送入gpuimage
BGRA_TO_RGB24(baseAddress,tempCaptureCapability.width*tempCaptureCapability.height*4);
//此处为gpuimage的处理，输出为ARGB
addfilter_on_rawdata(baseAddress,tempCaptureCapability.width,tempCaptureCapability.height,temp_argb);
//ARGB转为RGBA
ARGB_TO_RGBA(temp_argb,tempCaptureCapability.width*tempCaptureCapability.height*4,temp_rgba);
//此处由RGBA转为UIImage,参照另外一篇博文
UIImage *imgJPeg = [self convertBitmapRGBA8ToUIImage:temp_rgba withWidth:tempCaptureCapability.width withHeight:tempCaptureCapability.height];
//此处为CoreImage framework内容
CIImage* cgImage = [CIImage imageWithCGImage:imgJPeg.CGImage];
NSDictionary *opts = [NSDictionary dictionaryWithObject:CIDetectorAccuracyHigh
forKey:CIDetectorAccuracy];
CIDetector* detector = [CIDetector detectorOfType:CIDetectorTypeFace
context:nil
options:opts];
//得到面部数据
NSArray* features = [detector featuresInImage:cgImage];
CIFaceFeature *feature = nil;
CGRect rect;
for (CIFaceFeature *f in features)
{
CGRect aRect = f.bounds;
NSLog(@"%f, %f, %f, %f", aRect.origin.x, aRect.origin.y, aRect.size.width, aRect.size.height);
//眼睛和嘴的位置
if(f.hasLeftEyePosition) NSLog(@"Left eye %g %g\n", f.leftEyePosition.x, f.leftEyePosition.y);
if(f.hasRightEyePosition) NSLog(@"Right eye %g %g\n", f.rightEyePosition.x, f.rightEyePosition.y);
if(f.hasMouthPosition)
{
NSLog(@"Mouth %g %g %g %g\n", f.mouthPosition.x, f.mouthPosition.y,f.bounds.size.height,f.bounds.size.width);
feature = f;
rect = CGRectMake(f.mouthPosition.x - 100 , f.mouthPosition.y - 60, 200, 250);
}
}
