AgoraScreenCaptureParameters Class Reference

Inherits <NSObject>.

Properties
CGSize	dimensions
NSInteger	frameRate
NSInteger	bitrate
BOOL	captureMouseCursor
BOOL	windowFocus
NSArray *_Nullable	excludeWindowList
BOOL	highLighted
COLOR_CLASS *_Nullable	highLightColor
NSUInteger	highLightWidth

Property Documentation

dimensions

- (CGSize) dimensions

readwritenonatomicassign

The video encoding resolution of the screen sharing stream. If the screen dimensions are different from the value of this parameter, Agora applies the following strategies for encoding. Suppose dimensions is set to 1920 × 1080:

• If the value of the screen dimensions is lower than that of dimensions, for example, 1000 × 1000 pixels, the SDK uses the screen dimensions, that is, 1000 × 1000 pixels, for encoding.
• If the value of the screen dimensions is higher than that of dimensions, for example, 2000 × 1500, the SDK uses the maximum value under dimensions with the aspect ratio of the screen dimension (4:3) for encoding, that is, 1440 × 1080.

  Note

  When setting the encoding resolution in the scenario of sharing documents ( AgoraScreenScenarioDocument ), choose one of the following two methods:

• If you require the best image quality, it is recommended to set the encoding resolution to be the same as the capture resolution.
• If you wish to achieve a relative balance between image quality, bandwidth, and system performance, then:
  • When the capture resolution is greater than 1920 × 1080, it is recommended that the encoding resolution is not less than 1920 × 1080.
  • When the capture resolution is less than 1920 × 1080, it is recommended that the encoding resolution is not less than 1280 × 720.

frameRate

- (NSInteger) frameRate

readwritenonatomicassign

The frame rate (fps) of the shared region. The default value is 5. Agora does not recommend setting this to a value greater than 15.

bitrate

- (NSInteger) bitrate

readwritenonatomicassign

The bitrate (Kbps) of the shared region. The default value is 0 (the SDK works out a bitrate according to the dimensions of the current screen).

captureMouseCursor

- (BOOL) captureMouseCursor

readwritenonatomicassign

Whether to capture the mouse in screen sharing:

• YES: (Default) Capture the mouse.
• NO: Do not capture the mouse.

  Note

  Due to macOS system restrictions, setting this parameter to NO is ineffective during screen sharing (it has no impact when sharing a window).

windowFocus

- (BOOL) windowFocus

readwritenonatomicassign

Whether to bring the window to the front when calling the startScreenCaptureByWindowId:regionRect:captureParams: method to share it:

• YES: Bring the window to the front.
• NO: (Default) Do not bring the window to the front.

  Note

  Due to macOS system limitations, when setting this member to bring the window to the front, if the current app has multiple windows, only the main window will be brought to the front.

excludeWindowList

- (NSArray* _Nullable) excludeWindowList

readwritenonatomiccopy

The ID list of the windows to be blocked. When calling startScreenCaptureByDisplayId:regionRect:captureParams: to start screen sharing, you can use this parameter to block a specified window. When calling updateScreenCaptureParameters: to update screen sharing configurations, you can use this parameter to dynamically block a specified window.

highLighted

- (BOOL) highLighted

readwritenonatomicassign

Whether to place a border around the shared window or screen:

• YES: Place a border.
• NO: (Default) Do not place a border.

  Note

  When you share a part of a window or screen, the SDK places a border around the entire window or screen if you set this parameter to YES.

highLightColor

- (COLOR_CLASS* _Nullable) highLightColor

readwritenonatomicstrong

On macOS, COLOR_CLASS refers to NSColor.

highLightWidth

- (NSUInteger) highLightWidth

readwritenonatomicassign

The width (px) of the border. The default value is 5, and the value range is (0, 50].

Note

This parameter only takes effect when highLighted is set to YES.

captureAudio

- (BOOL) captureAudio

readwritenonatomicassign