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    Camera

    Last updated: 2024-11-21 18:48:11
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      createCameraContext

      This method is used via CameraContext wx.createCameraContext().
      Feature Description: Creates a CameraContext object.
      Return Value: CameraContext.

      CameraContext

      Feature Description: A CameraContext instance, which can be obtained through wx.createCameraContext. The cameraContext is bound to the unique <camera> component within the page, operating the corresponding <camera> component.

      .onCameraFrame

      This method is used via CameraFrameListener CameraContext.onCameraFrame(onCameraFrameCallback callback).
      Feature Description: Gets real-time frame data from the Camera.
      Parameter and Description: Function callback.
      Callback function parameter: Object res.
      Attribute
      Type
      Description
      width
      number
      The width of the image data rectangle.
      height
      number
      The height of the source image data rectangle.
      data
      ArrayBuffer
      Image pixel data, a one-dimensional array, with every four items representing the RGBA of a pixel.
      Return Value:CameraFrameListener。
      Sample Code
      const context = wx.createCameraContext()
      const listener = context.onCameraFrame((frame) => {
        console.log(frame.data instanceof ArrayBuffer, frame.width, frame.height)
      })
      listener.start()

      .setZoom

      This method is used via CameraContext.setZoom(Object object).
      Feature Description: Sets the scaling level.
      Parameter and Description: Object.
      Attribute
      Type
      Default value
      Required
      Description
      zoom
      number
      -
      Yes
      Scaling level, ranging [1, maxZoom]. The zoom can be a decimal, accurate to one decimal place. maxZoom can be obtained from the return value of bindinitdone.
      success
      function
      -
      No
      Callback Function of Successful Interface Call
      fail
      function
      -
      No
      Callback Function of Failing Interface Call
      complete
      function
      -
      No
      Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations)
      Parameters for object.success callback function: Object res.
      Attribute
      Type
      Description
      zoom
      number
      The actual set scaling level. Due to system constraints, some models may not be able to be set to the specified value, and will instead use the closest feasible value.

      .startRecord

      This method is used via CameraContext.startRecord(Object object).
      Feature Description: Starts video recording.
      Parameter and Description: Object.
      Attribute
      Type
      Default value
      Required
      Description
      timeoutCallback
      function
      -
      No
      The recording will terminate after 30 seconds or when the page onHide is triggered.
      success
      function
      -
      No
      Callback Function of Successful Interface Call
      fail
      function
      -
      No
      Callback Function of Failing Interface Call
      complete
      function
      -
      No
      Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations)
      Parameter of the object.timeoutCallback callback function: Object res.
      Attribute
      Type
      Description
      tempThumbPath
      string
      Temporary path of the cover image file
      tempVideoPath
      string
      Temporary path of the video file

      .stopRecord

      This method is used via CameraContext.startRecord(Object object).
      Feature Description: Stops video recording.
      Parameter and Description: Object.
      Attribute
      Type
      Default value
      Required
      Description
      success
      function
      -
      No
      Callback Function of Successful Interface Call
      fail
      function
      -
      No
      Callback Function of Failing Interface Call
      complete
      function
      -
      No
      Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations)
      Parameters for object.success callback function: Object res.
      Attribute
      Type
      Description
      tempThumbPath
      string
      Temporary path of the cover image file
      tempVideoPath
      string
      Temporary path of the video file

      .takePhoto

      This method is used via CameraFrameListener.stop(Object object).
      Feature Description: Captures photographs.
      Parameter and Description: Object.
      Attribute
      Type
      Default value
      Required
      Description
      quality
      string
      normal
      No
      Image Quality
      success
      function
      -
      No
      Callback Function of Successful Interface Call
      fail
      function
      -
      No
      Callback Function of Failing Interface Call
      complete
      function
      -
      No
      Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations)
      Valid values of object.quality
      Value
      Description
      high
      Higher quality
      normal
      Standard Quality
      low
      Lower quality
      Parameters for object.success callback function: Object res.
      Attribute
      Type
      Description
      tempImagePath
      string
      Temporary path (local path) for photo files, Android is jpg image format, ios is png

      CameraFrameListener

      Note:
      Listener Returned by CameraContext.onCameraFrame()
      For related documentation, see camera.

      .start

      This method is used via CameraFrameListener.start(Object object).
      Feature Description: Starts monitoring frame data.
      Parameter and Description: Object.
      Attribute
      Type
      Default value
      Required
      Description
      success
      function
      -
      No
      Callback Function of Successful Interface Call
      fail
      function
      -
      No
      Callback Function of Failing Interface Call
      complete
      function
      -
      No
      Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations)

      .stop

      This method is used via CameraFrameListener.stop(Object object).
      Feature Description: Stops monitoring frame data.
      Parameter and Description: Object.
      Attribute
      Type
      Default value
      Required
      Description
      success
      function
      -
      No
      Callback Function of Successful Interface Call
      fail
      function
      -
      No
      Callback Function of Failing Interface Call
      complete
      function
      -
      No
      Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations)
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