Question

我正在使用AVCaptureDevice的实例方法＆＃34; isFlashModeSupported＆＃34;如下：

#include <boost/iostreams/filter/bzip2.hpp>
#include <boost/iostreams/filtering_stream.hpp>

template <typename T>
void read_and_verify(std::string name, T& into) {
    std::ifstream compressed("/tmp/so/computer_vision/openpose/train_data/" + name + ".bz2");

    boost::iostreams::filtering_istream fs;
    fs.push(boost::iostreams::bzip2_decompressor{});
    fs.push(compressed);

    boost::archive::text_iarchive ia(fs);
    ia >> into;

    debug_print(name, into);
}

但在iOS 10中，{@ 1}}和NSArray *captureDeviceType = @[AVCaptureDeviceTypeBuiltInWideAngleCamera,AVCaptureDeviceTypeBuiltInMicrophone]; AVCaptureDeviceDiscoverySession *captureDevice = [AVCaptureDeviceDiscoverySession discoverySessionWithDeviceTypes:captureDeviceType mediaType:AVMediaTypeVideo position:AVCaptureDevicePositionUnspecified]; NSArray *deviceList = [captureDevice devices]; AVCaptureDevice *selectedCamera = [deviceList objectAtIndex:(NSUInteger)currentCameraDeviceIndex]; if ( [selectedCamera isFlashModeSupported:AVCaptureFlashModeAuto] ){ [selectedCamera setFlashMode:AVCaptureFlashModeAuto]; // AVCaptureFlashModeAuto }方法已被弃用。

Xcode建议使用AVCapturePhotoOutput＆＃39; s -supportedFlashModes。

有任何想法如何使用上述方法吗？

提前致谢

Answer 1

使用此代码。这非常有效。

AVCaptureSession *session = [[AVCaptureSession alloc] init];
[session setSessionPreset:AVCaptureSessionPresetPhoto];


AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
AVCaptureDeviceInput *deviceInput = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error];
if ([device hasFlash]) {
   [device lockForConfiguration:nil];
   device.flashMode = AVCaptureFlashModeAuto;
   [device unlockForConfiguration];
}

Answer 2

这是怎么回事？

AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];

if ([device hasFlash]) {
    if ([self.stillImageOutput.supportedFlashModes containsObject:[NSNumber numberWithInt:AVCaptureFlashModeOn]]) {


}

AVCaptureDevice isFlashModeSupported已弃用iOS 10

2 个答案: