iOS API Reference

Logging Related

Log Levels

Log level enumeration for controlling log output levels.

typedef NS_ENUM(NSInteger, FBLogLevel) {
  FBLogLevel_Trace = 0,
  FBLogLevel_Debug,
  FBLogLevel_Info,
  FBLogLevel_Warn,
  FBLogLevel_Error,
  FBLogLevel_Critical,
};

Log Configuration Class

Log configuration class for configuring log output methods and levels.

Field Descriptions:

• consoleEnabled: Whether to enable console output
• fileEnabled: Whether to enable file output
• level: Log level
• fileName: Log file path (only effective when fileEnabled is YES)

FB_OBJC_API @interface FBLogConfig : NSObject

@property(nonatomic, assign) BOOL consoleEnabled;
@property(nonatomic, assign) BOOL fileEnabled;
@property(nonatomic, assign) FBLogLevel level;
@property(nonatomic, copy, nullable) NSString* fileName;

- (instancetype)init;

@end

Engine Related

Process Mode

Image processing mode enumeration.

• FBProcessModeImage: Image mode, suitable for single image processing
• FBProcessModeVideo: Video mode, suitable for video streams and live streaming scenarios, better performance

typedef NS_ENUM(NSInteger, FBProcessMode) {
  FBProcessModeImage = 0,  // Image mode
  FBProcessModeVideo = 1   // Video mode
};

Engine Configuration

Engine configuration class for initializing the beauty engine.

Field Descriptions:

• appId: Application ID (optional, not required if licenseJson is provided)
• appKey: Application key (optional, not required if licenseJson is provided)
• licenseJson: License data JSON string (optional, if provided, takes priority and appId and appKey are not required)

Verification Priority:

• If licenseJson is not empty, use license data verification (supports online response and offline license)
• Otherwise, use appId and appKey for automatic online verification

FB_OBJC_API @interface FBEngineConfig : NSObject

@property(nonatomic, copy) NSString* appId;
@property(nonatomic, copy) NSString* appKey;
@property(nonatomic, copy, nullable) NSString* licenseJson;  // License data JSON string (optional)

- (instancetype)init;
@end

Engine Interface

Main beauty effect engine class providing entry point for beauty functionality.

Static Methods:

• setLogConfig:: Set log configuration

Instance Methods:

Beauty Type Control

• setBeautyTypeEnabled:enabled:: Enable or disable beauty type
• isBeautyTypeEnabled:: Check if beauty type is enabled
• disableAllBeautyTypes: Disable all beauty types

Parameter Settings

• setBasicParam:floatValue:: Set basic beauty parameters (range 0.0 - 1.0)
• setReshapeParam:floatValue:: Set face reshape parameters (range 0.0 - 1.0)
• setMakeupParam:floatValue:: Set makeup parameters (range 0.0 - 1.0)
• setVirtualBackground:: Set virtual background
  • Parameter: FBVirtualBackgroundOptions object containing background mode and background image

Image Processing

• processImage:processMode:: Process image frame

Return Value Descriptions:

• Methods return int type: 0 indicates success, other values indicate error codes
• processImage:processMode: returns FBImageFrame: Processed image frame, returns nil on failure

FB_OBJC_API @interface FBBeautyEffectEngine : NSObject

+ (int)setLogConfig:(FBLogConfig*)config;
+ (instancetype)createEngineWithConfig:(FBEngineConfig*)config;

- (int)setBeautyTypeEnabled:(FBBeautyType)type enabled:(BOOL)enabled;
- (BOOL)isBeautyTypeEnabled:(FBBeautyType)type;
- (int)disableAllBeautyTypes;

- (int)setBasicParam:(FBBasicParam)param floatValue:(float)value;
- (int)setReshapeParam:(FBReshapeParam)param floatValue:(float)value;
- (int)setMakeupParam:(FBMakeupParam)param floatValue:(float)value;
- (int)setVirtualBackground:(FBVirtualBackgroundOptions*)options;

- (FBImageFrame* _Nullable)processImage:(FBImageFrame*)imageFrame
                            processMode:(FBProcessMode)processMode;

@end

Beauty Parameters

Beauty parameter enumeration classes containing all beauty-related parameter type definitions.

Beauty Types

Define available beauty functionality types.

typedef NS_ENUM(NSInteger, FBBeautyType) {
  FBBeautyType_Basic = 0,     // Basic beauty
  FBBeautyType_Reshape,       // Face reshape
  FBBeautyType_Makeup,        // Makeup effects
  FBBeautyType_VirtualBackground,  // Virtual background
};

Basic Beauty Parameters

Basic beauty effect parameter types, all parameter value ranges are 0.0 - 1.0.

typedef NS_ENUM(NSInteger, FBBasicParam) {
  FBBasicParam_Smoothing = 0,  // Smoothing
  FBBasicParam_Sharpening,     // Sharpening
  FBBasicParam_Whitening,      // Whitening
  FBBasicParam_Rosiness,       // Rosiness
};

Face Reshape Parameters

Face reshape effect parameter types, all parameter value ranges are 0.0 - 1.0.

typedef NS_ENUM(NSInteger, FBReshapeParam) {
  FBReshapeParam_FaceThin = 0,  // Face thinning
  FBReshapeParam_FaceVShape,    // V-shaped face
  FBReshapeParam_FaceNarrow,    // Narrow face
  FBReshapeParam_FaceShort,     // Short face
  FBReshapeParam_Cheekbone,     // Cheekbone
  FBReshapeParam_Jawbone,       // Jawbone
  FBReshapeParam_Chin,          // Chin
  FBReshapeParam_NoseSlim,      // Nose slimming
  FBReshapeParam_EyeSize,       // Eye enlargement
  FBReshapeParam_EyeDistance,   // Eye distance
};

Makeup Parameters

Makeup effect parameter types, all parameter value ranges are 0.0 - 1.0.

typedef NS_ENUM(NSInteger, FBMakeupParam) {
  FBMakeupParam_Lipstick = 0,  // Lipstick
  FBMakeupParam_Blush,         // Blush
};

Virtual Background Options

Virtual background effect configuration options.

FB_OBJC_API @interface FBVirtualBackgroundOptions : NSObject
@property(nonatomic, assign) FBBackgroundMode mode;
@property(nonatomic, strong, nullable) FBImageFrame *backgroundImage;

- (instancetype)init;
- (instancetype)initWithMode:(FBBackgroundMode)mode;
@end;;

Image Related

FBImageFrame

Image frame class for encapsulating image data and processing.

Creation Methods:

• createWithFile:: Create from file (supports PNG, JPG)
• createWithRGBA:width:height:stride:: Create from RGBA data
• createWithBGRA:width:height:stride:: Create from BGRA data
• createWithI420:...: Create from I420 YUV data
• createWithNV12:...: Create from NV12 YUV data
• createWithNV21:...: Create from NV21 YUV data

Image Operations:

• rotate:: Rotate image (returns 0 for success)

Format Conversion:

• toRGBA, toBGRA, toRGB, toBGR: Convert to RGB formats
• toI420, toNV12, toNV21: Convert to YUV formats

FB_OBJC_API @interface FBImageFrame : NSObject

+ (FBImageFrame *_Nullable)createWithFile:(NSString *)filePath;
+ (FBImageFrame *_Nullable)createWithRGBA:(const uint8_t *)data
                                    width:(int)width
                                   height:(int)height
                                   stride:(int)stride;
+ (FBImageFrame *_Nullable)createWithBGRA:(const uint8_t *)data
                                    width:(int)width
                                   height:(int)height
                                   stride:(int)stride;
+ (FBImageFrame *_Nullable)createWithI420:(int)width
                                   height:(int)height
                                    dataY:(const uint8_t *)dataY
                                  strideY:(int)strideY
                                    dataU:(const uint8_t *)dataU
                                  strideU:(int)strideU
                                    dataV:(const uint8_t *)dataV
                                  strideV:(int)strideV;
+ (FBImageFrame *_Nullable)createWithNV12:(int)width
                                   height:(int)height
                                    dataY:(const uint8_t *)dataY
                                  strideY:(int)strideY
                                   dataUV:(const uint8_t *)dataUV
                                 strideUV:(int)strideUV;
+ (FBImageFrame *_Nullable)createWithNV21:(int)width
                                   height:(int)height
                                    dataY:(const uint8_t *)dataY
                                  strideY:(int)strideY
                                   dataUV:(const uint8_t *)dataUV
                                 strideUV:(int)strideUV;

- (int)rotate:(FBImageRotation)rotation;

- (FBImageBuffer *_Nullable)toRGBA;
- (FBImageBuffer *_Nullable)toBGRA;
- (FBImageBuffer *_Nullable)toRGB;
- (FBImageBuffer *_Nullable)toBGR;
- (FBImageBuffer *_Nullable)toI420;
- (FBImageBuffer *_Nullable)toNV12;
- (FBImageBuffer *_Nullable)toNV21;

@end

FBImageBuffer

Image buffer class for accessing image data.

Supported Image Formats:

• FBImageFormatI420: YUV 4:2:0 (3 planes, Y, U, V)
• FBImageFormatNV12: YUV 4:2:0 (2 planes, Y + UV)
• FBImageFormatNV21: YUV 4:2:0 (2 planes, Y + VU)
• FBImageFormatRGBA, FBImageFormatBGRA: 32-bit RGBA/BGRA
• FBImageFormatRGB, FBImageFormatBGR: 24-bit RGB/BGR
• FBImageFormatTexture: Texture format

Image Rotation Angles:

• FBImageRotation0: 0 degrees
• FBImageRotation90: Clockwise 90 degrees
• FBImageRotation180: Clockwise 180 degrees
• FBImageRotation270: Clockwise 270 degrees

Property Access:

• width, height: Get image width and height
• size: Get image data size (in bytes)
• stride: Get image stride

Data Access:

• data: Get raw image data pointer
• YUV format specific: dataY, dataU, dataV, dataUV
• YUV format strides: strideY, strideU, strideV, strideUV

typedef NS_ENUM(NSInteger, FBImageFormat) {
  FBImageFormatI420,
  FBImageFormatNV12,
  FBImageFormatNV21,
  FBImageFormatBGRA,
  FBImageFormatRGBA,
  FBImageFormatBGR,
  FBImageFormatRGB,
  FBImageFormatTexture,
};

typedef NS_ENUM(NSInteger, FBImageRotation) {
  FBImageRotation0,    // 0 degrees
  FBImageRotation90,   // Clockwise 90 degrees
  FBImageRotation180,  // Clockwise 180 degrees
  FBImageRotation270,  // Clockwise 270 degrees
};

FB_OBJC_API @interface FBImageBuffer : NSObject

@property(nonatomic, assign, readonly) int32_t width;
@property(nonatomic, assign, readonly) int32_t height;
@property(nonatomic, assign, readonly) int32_t size;
@property(nonatomic, assign, readonly) int32_t stride;

- (const uint8_t *_Nullable)data;

- (const uint8_t *_Nullable)dataY;
- (const uint8_t *_Nullable)dataU;
- (const uint8_t *_Nullable)dataV;
- (const uint8_t *_Nullable)dataUV;
- (int32_t)strideY;
- (int32_t)strideU;
- (int32_t)strideV;
- (int32_t)strideUV;

@end