You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: seqReaderPlugin.m
    path of file: ./repos/MCITF/Code/MCITF/EdgeBox/piotr_toolbox/toolbox/videos
    
    the code of the file until where you have to start completion: function varargout = seqReaderPlugin( cmd, h, varargin )
% Plugin for seqIo and videoIO to allow reading of seq files.
%
% Do not call directly, use as plugin for seqIo or videoIO instead.
% The following is a list of commands available (srp=seqReaderPlugin):
%  h = srp('open',h,fName)    % Open a seq file for reading (h ignored).
%  h = srp('close',h);        % Close seq file (output h is -1).
%  [I,ts] =srp('getframe',h)  % Get current frame (returns [] if invalid).
%  [I,ts] =srp('getframeb',h) % Get current frame with no decoding.
%  ts = srp('getts',h)        % Return timestamps for all frames.
%  info = srp('getinfo',h)    % Return struct with info about video.
%  [I,ts] =srp('getnext',h)   % Shortcut for 'next' followed by 'getframe'.
%  out = srp('next',h)        % Go to next frame (out=0 on fail).
%  out = srp('seek',h,frame)  % Go to specified frame (out=0 on fail).
%  out = srp('step',h,delta)  % Go to current frame+delta (out=0 on fail).
%
% USAGE
%  varargout = seqReaderPlugin( cmd, h, varargin )
%
% INPUTS
%  cmd        - string indicating operation to perform
%  h          - unique identifier for open seq file
%  varargin   - additional options (vary according to cmd)
%
% OUTPUTS

    
function varargout = seqReaderPlugin( cmd, h, varargin )
% Plugin for seqIo and videoIO to allow reading of seq files.
%
% Do not call directly, use as plugin for seqIo or videoIO instead.
% The following is a list of commands available (srp=seqReaderPlugin):
%  h = srp('open',h,fName)    % Open a seq file for reading (h ignored).
%  h = srp('close',h);        % Close seq file (output h is -1).
%  [I,ts] =srp('getframe',h)  % Get current frame (returns [] if invalid).
%  [I,ts] =srp('getframeb',h) % Get current frame with no decoding.
%  ts = srp('getts',h)        % Return timestamps for all frames.
%  info = srp('getinfo',h)    % Return struct with info about video.
%  [I,ts] =srp('getnext',h)   % Shortcut for 'next' followed by 'getframe'.
%  out = srp('next',h)        % Go to next frame (out=0 on fail).
%  out = srp('seek',h,frame)  % Go to specified frame (out=0 on fail).
%  out = srp('step',h,delta)  % Go to current frame+delta (out=0 on fail).
%
% USAGE
%  varargout = seqReaderPlugin( cmd, h, varargin )
%
% INPUTS
%  cmd        - string indicating operation to perform
%  h          - unique identifier for open seq file
%  varargin   - additional options (vary according to cmd)
%
% OUTPUTS
%  varargout  - output (varies according to cmd)
%
% EXAMPLE
%
% See also SEQIO, SEQWRITERPLUGIN
%
% Piotr's Computer Vision Matlab Toolbox      Version 3.10
% Copyright 2014 Piotr Dollar.  [pdollar-at-gmail.com]
% Licensed under the Simplified BSD License [see external/bsd.txt]

% persistent variables to keep track of all loaded .seq files
persistent h1 hs cs fids infos tNms;
if(isempty(h1)), h1=int32(now); hs=int32([]); infos={}; tNms={}; end