Agora C++ API Reference for All Platforms

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Public Member Functions | Protected Member Functions | List of all members
agora::rtc::IScreenCapturer2 Class Referenceabstract

`#include <NGIAgoraScreenCapturer.h>`

Inherits agora::RefCountInterface.

Inherited by agora::rtc::IScreenCapturerEx2.

## Public Member Functions
virtual int | setScreenCaptureDimensions (const VideoDimensions &dimensions, aosl_ref_t ares=AOSL_REF_INVALID)=0
virtual int | updateScreenCaptureRegion (const Rectangle &regionRect, aosl_ref_t ares=AOSL_REF_INVALID)=0
virtual int | setFrameRate (int rate, aosl_ref_t ares=AOSL_REF_INVALID)=0
virtual int | setAudioRecordConfig (int channels, int sampleRate, aosl_ref_t ares=AOSL_REF_INVALID)=0
virtual int | setAudioVolume (uint32_t volume, aosl_ref_t ares=AOSL_REF_INVALID)=0
virtual int | setExternalMediaProjection (void *mediaProjection)=0
Public Member Functions inherited from agora::RefCountInterface
virtual void | AddRef () const =0
virtual RefCountReleaseStatus | Release () const =0
virtual bool | HasOneRef () const =0

## Protected Member Functions
virtual | ~IScreenCapturer2 ()
Protected Member Functions inherited from agora::RefCountInterface
virtual | ~RefCountInterface ()

## Constructor & Destructor Documentation

## ◆ ~IScreenCapturer2()

virtual agora::rtc::IScreenCapturer2::~IScreenCapturer2 | ( |  | ) |
| inlineprotectedvirtual

## Member Function Documentation

## ◆ setScreenCaptureDimensions()

virtual int agora::rtc::IScreenCapturer2::setScreenCaptureDimensions | ( | const VideoDimensions & | dimensions,
|  | aosl_ref_t | ares = AOSL_REF_INVALID )
| pure virtual

Screen capture's resolution.

Parameters

  dimensions | The reference to the captured screen's resolution in terms of width × height. If you set `width` or `height` as 0, the dimensions will be the screen's width × height.

Returns
  - 0: Success.
  - < 0: Failure.
    - ERR_INVALID_ARGUMENT if data is null.

## ◆ updateScreenCaptureRegion()

virtual int agora::rtc::IScreenCapturer2::updateScreenCaptureRegion | ( | const Rectangle & | regionRect,
|  | aosl_ref_t | ares = AOSL_REF_INVALID )
| pure virtual

Updates the screen capture region.

Parameters

  regionRect | The reference to the relative location of the region to the screen or window. See Rectangle. If the specified region overruns the screen or window, the screen capturer captures only the region within it. If you set `width` or `height` as 0, the SDK shares the whole screen or window.

Returns
  - 0: Success.
  - < 0: Failure.
    - No screen or window is being shared.

## ◆ setFrameRate()

virtual int agora::rtc::IScreenCapturer2::setFrameRate | ( | int | rate,
|  | aosl_ref_t | ares = AOSL_REF_INVALID )
| pure virtual

Set frame rate of the screen capture source

Parameters

  rate | frame rate (in fps)

## ◆ setAudioRecordConfig()

virtual int agora::rtc::IScreenCapturer2::setAudioRecordConfig | ( | int | channels,
|  | int | sampleRate,
|  | aosl_ref_t | ares = AOSL_REF_INVALID )
| pure virtual

Set channels and sample rate of screen audio capturing

Parameters

  channels | channels of system audio capture
  sampleRate | sample rate of system audio capture

Returns
  - 0: Sucess.
  - < 0: Failure

## ◆ setAudioVolume()

virtual int agora::rtc::IScreenCapturer2::setAudioVolume | ( | uint32_t | volume,
|  | aosl_ref_t | ares = AOSL_REF_INVALID )
| pure virtual

Set volume of screen audio capturing

Parameters

  volume | volume of system audio capture

Returns
  - 0: Sucess.
  - < 0: Failure

## ◆ setExternalMediaProjection()

virtual int agora::rtc::IScreenCapturer2::setExternalMediaProjection | ( | void * | mediaProjection | ) |
| pure virtual

Sets screen sharing using the Android native class MediaProjection.

When screen capture stopped, the SDK will automatically release the MediaProjection internally.

Parameters

  mediaProjection | MediaProjection is an Android class that provides access to screen capture and recording capabiliies.

Note
  Additional MediaProjection is primarily used for specific scenarios, such as IOT custom devices or subprocess screen sharing.

Returns
  - 0: Success.
  - < 0: Failure. @technical preview