V1.2.3

Version 1.2.3

• Added support for videoConstraints in config as an experimental config.

      /* videoConstraints: {MediaTrackConstraints}, Optional
       *  @beta(this config is not well supported yet).
       *
       *  Important: When passed this will override other configurations
       *  like 'cameraIdOrConfig' or configurations like 'aspectRatio'.
       *
       *  videoConstraints should be of type {@code MediaTrackConstraints}
       *  as defined in
       *  https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints
       *  and is used to specify a variety of video or camera controls
       *  like: aspect ratio, facing mode, video frame rate.
       */

  If passed this will override cameraIdOrConfig and aspectRatio.

• Added two new experimental APIs in Html5Qrcode class

  • getRunningTrackCapabilities() - New

    /**
     * Returns the capabilities of the running video track.
     * 
     * @beta This is an experimental API
     * @returns the capabilities of a running video track.
     * @throws error if the scanning is not in running state.
     */
    getRunningTrackCapabilities()

  • applyVideoConstraints(videoConstaints) - New

    /**
     * Apply a video constraints on running video track.
     * 
     * Important:
     *  1. Must be called only if the camera based scanning is in progress.
     *  2. Changing aspectRatio while scanner is running is not yet supported.
     * 
     * @beta This is an experimental API
     * @param {MediaTrackConstraints} specifies a variety of video or camera
     *  controls as defined in 
     *  https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints
     * @returns a Promise which succeeds if the passed constraints are applied,
     *  fails otherwise.
     * @throws error if the scanning is not in running state.
     */
    applyVideoConstraints(videoConstaints) {}