DJICameraDelegate

@protocol DJICameraDelegate <NSObject>

This protocol provides delegate methods to receive the updated video data, camera’s current state and lens information.

  • Video data update callback. H.264 (also called MPEG-4 Part 10 Advanced Video Coding or MPEG-4 AVC) is a video coding format that is currently one of the most commonly used formats for the recording, compression, and distribution of video content.

    Declaration

    Objective-C

    - (void)camera:(DJICamera *_Nonnull)camera
    didReceiveVideoData:(nonnull uint8_t *)videoBuffer
                 length:(size_t)size;

    Parameters

    camera

    Camera that sends out the video data.
    videoBuffer

    H.264 video data buffer. Don’t free the buffer after it has been used. The units for the video buffer are bytes.
    length

    Size of the address of the video data buffer in bytes.

  • Video data update callback from the FPV camera on Inspire 2.

    Declaration

    Objective-C

    - (void)camera:(DJICamera *_Nonnull)camera
    didReceiveFPVVideoData:(nonnull uint8_t *)videoBuffer
                    length:(size_t)size;

    Parameters

    camera

    Camera that sends out the video data.
    videoBuffer

    H.264 video data buffer. Don’t free the buffer after it has been used. The units for the video buffer are bytes.
    length

    Size of the address of the video data buffer in bytes.

  • Updates the camera’s current state.

    Declaration

    Objective-C

    - (void)camera:(DJICamera *_Nonnull)camera
    didUpdateSystemState:(DJICameraSystemState *_Nonnull)systemState;

    Parameters

    camera

    Camera that updates the current state.
    systemState

    The camera’s system state.

  • Tells the delegate that the lens information is updated. This method is available only when isChangeableLensSupported is YES.

    Declaration

    Objective-C

    - (void)camera:(DJICamera *_Nonnull)camera
    didUpdateLensState:(DJICameraLensState *_Nonnull)lensState;

    Parameters

    camera

    Camera that sends out the updatd lens information.
    lensState

    The camera’s lens state.

  • Tells the delegate that a new media file (photo or video) has been generated. It is not supported by Zenmuse XT camera.

    Warning

    In this delegate, the DJIMedia instance properties thumbnail, durationInSeconds and orientation require special consideration. The thumbnail property normally has a pointer to a UIImage of the thumbnail, but this is only available when the camera is in DJICameraModeMediaDownload work mode. Additionally, for this instance of DJIMedia, the durationInSeconds property is 0 and the videoOrientation property is DJICameraOrientationLandscape.

    Declaration

    Objective-C

    - (void)camera:(DJICamera *_Nonnull)camera
    didGenerateNewMediaFile:(DJIMedia *_Nonnull)newMedia;

    Parameters

    camera

    Camera that generates the new media file.
    newMedia

    The new media file.

  • Tells the delegate that a time-lapse preview image has been generated. This method is only available on Osmo with the upcoming firmware version.

    Declaration

    Objective-C

    - (void)camera:(DJICamera *_Nonnull)camera
    didGenerateTimeLapsePreview:(UIImage *_Nonnull)previewImage;

    Parameters

    camera

    Camera that generates the time-lapse preview image.
    previewImage

    The new generated preview image.

  • Tells the delegate that the camera’s SD card state has been updated.

    Declaration

    Objective-C

    - (void)camera:(DJICamera *_Nonnull)camera
    didUpdateSDCardState:(DJICameraSDCardState *_Nonnull)sdCardState;

    Parameters

    camera

    Camera that sends out the updated SD card state.
    sdCardState

    The camera’s SD card state.

  • Tells the delegate that the camera’s SSD state has been updated. This method is available only when isSSDSupported is YES.

    Declaration

    Objective-C

    - (void)camera:(DJICamera *_Nonnull)camera
    didUpdateSSDState:(DJICameraSSDState *_Nonnull)ssdState;

    Parameters

    camera

    Camera that sends out the updated SSD state.
    ssdState

    The camera’s SSD state.

  • Called when there are new min, max, and average values available for the set spot metering area. Supported only by Zenmuse XT containing Advanced Radiometry capabilities.

    Declaration

    Objective-C

    - (void)camera:(DJICamera *_Nonnull)camera
    didUpdateAreaTemperatureAggregations:
        (DJICameraThermalAreaTemperatureAggregations)temperatureAggregations;

    Parameters

    camera

    Camera that sends out the aggregate temperature values
    temperatureAggregations

    The updated aggregate temperature values

  • Called when updated external scene settings are available. Supported only by Zenmuse XT containing Advanced Radiometry capabilities.

    Declaration

    Objective-C

    - (void)camera:(DJICamera *_Nonnull)camera
    didUpdateExternalSceneSettings:
        (DJICameraThermalExternalSceneSettings)externalSceneSettings;

    Parameters

    camera

    Camera that sends out the external scene setting values
    externalSceneSettings

    The updated external scene settings values

  • Called whenever the camera parameters change. In automatic exposure modes (Program, Shutter Priority and Aperture Priority) the camera may be automatically changing aperture, shutter speed and ISO (depending on the mode and camera) when lighting conditions change. In Manual mode, the exposure compensation is automatically updated to let the user know how much compensation the exposure needs to get to an exposure the camera calculates as correct.

    See

    DJICameraExposureParameters

    Declaration

    Objective-C

    - (void)camera:(DJICamera *_Nonnull)camera
    didUpdateCurrentExposureParameters:(DJICameraExposureParameters)params;

    Parameters

    camera

    Camera that sends out the video data.
    params

    The updated real values for parameters.

  • Received temperature in degrees Celsius of image. The thermal imaging camera will only update the temperature if the temperature data is enabled. For the XT Standard version, the temperature measurement data is the average of the center four pixels of the image. For the XT Advanced Radiometry version, the temperature measurement point can be set using setThermalSpotMeteringTargetPoint:withCompletion.

    See

    [- (void)setThermalTemperatureDataEnabled:(BOOL)enabled withCompletion:(DJICompletionBlock)block].

    Declaration

    Objective-C

    - (void)camera:(DJICamera *_Nonnull)camera
    didUpdateTemperatureData:(float)temperature;

    Parameters

    camera

    Camera that sends out the updated center temperature.
    temperature

    The camera’s temperature data in degrees Celsius.