오류 처리

typedef NS_ENUM(NSInteger, FBErrorCode) {
  FBErrorCode_Success = 0,
  FBErrorCode_InvalidArgument = -1,
  FBErrorCode_NotInitialized = -2,
  FBErrorCode_License = -3,
  FBErrorCode_Unsupported = -4,
  FBErrorCode_IO = -5,
  FBErrorCode_NoSlot = -6,
  FBErrorCode_Process = -7,
  FBErrorCode_OutOfMemory = -8,
};

FBLogConfig *logConfig = [[FBLogConfig alloc] init];
logConfig.consoleEnabled = YES;
logConfig.level = FBLogLevel_Info;
int logRet = [FBBeautyEffectEngine setLogConfig:logConfig];
if (logRet != FBErrorCode_Success) {
  NSLog(@"setLogConfig failed: %d", logRet);
}

FBEngineConfig *config = [[FBEngineConfig alloc] init];
config.appId = @"your_app_id";
config.appKey = @"your_app_key";
self.engine = [FBBeautyEffectEngine createEngineWithConfig:config];
if (self.engine == nil) {
  NSLog(@"Failed to create engine (check license, Bundle ID, and logs)");
  return;
}

int ret = [self.engine setSmoothing:0.5f];
if (ret != FBErrorCode_Success) {
  NSLog(@"setSmoothing failed: %d", ret);
}

NSString *FBErrorMessage(int code) {
  switch (code) {
    case FBErrorCode_Success: return @"success";
    case FBErrorCode_InvalidArgument: return @"invalid argument";
    case FBErrorCode_NotInitialized: return @"engine not initialized";
    case FBErrorCode_License: return @"license / auth failure";
    case FBErrorCode_Unsupported: return @"unsupported";
    case FBErrorCode_IO: return @"I/O error";
    case FBErrorCode_NoSlot: return @"no available slot";
    case FBErrorCode_Process: return @"process failed";
    case FBErrorCode_OutOfMemory: return @"out of memory";
    default: return [NSString stringWithFormat:@"unknown (%d)", code];
  }
}

FBEngineCallbacks *callbacks = [[FBEngineCallbacks alloc] init];
callbacks.onEngineEvent = ^(FBEngineEventCode code, NSString * _Nullable message) {
  switch (code) {
    case FBEngineEventCodeLicenseValidationFailed:
      NSLog(@"License failed: %@", message);
      break;
    case FBEngineEventCodeInitializationFailed:
      NSLog(@"Init failed: %@", message);
      break;
    default:
      break;
  }
};
[self.engine setCallbacks:callbacks];

- (FBImageFrame *)processSafely:(FBImageFrame *)input {
  if (input == nil || input.width <= 0 || input.height <= 0) {
    NSLog(@"Invalid FBImageFrame");
    return nil;
  }
  input.type = FBFrameTypeVideo;
  FBImageFrame *output = [self.engine processImage:input];
  if (output == nil) {
    NSLog(@"processImage returned nil");
  }
  return output;
}

int saved = [output toFile:path quality:90];
if (saved != FBErrorCode_Success) {
  NSLog(@"toFile failed: %d", saved);
}

NSString *logPath = [NSTemporaryDirectory() stringByAppendingPathComponent:@"facebetter.log"];
NSString *logDir = [logPath stringByDeletingLastPathComponent];
[[NSFileManager defaultManager] createDirectoryAtPath:logDir
                          withIntermediateDirectories:YES
                                           attributes:nil
                                                error:nil];

FBLogConfig *logConfig = [[FBLogConfig alloc] init];
logConfig.consoleEnabled = YES;
logConfig.fileEnabled = YES;
logConfig.level = FBLogLevel_Debug;
logConfig.fileName = logPath;
[FBBeautyEffectEngine setLogConfig:logConfig];