%'get_file_info': determine info about a file (image, multimage, civdata,...) . %------------------------------------------------------------------------ % [FileInfo,VideoObject]=get_file_info(fileinput) % % OUTPUT: % FileInfo: structure containing info on the file (case of images or video), in particular % .FileType: type of file, needed as input of read_field.m % ='figure': Matlab figure % ='mat': Matlab data file % ='xml': xml file % ='xls': Excel file % ='dat': text file for data, % ='image': image format recognised by Matlab % ='multimage': image format recognised by Matlab with multiple frames % ='video': video movie file % ='mmreader': video from old versions of Matlab (<2009) % ='rdvision': images in binary format from company rdvision % ='image_DaVis': images from softwar DaVis (company LaVision) % ='cine_phantom': images from fast camera Phantom % ='bin': binary file without specific organisation % ='netcdf': netcdf file % ='civdata': netcdf files provided by civ_series % ='civx': netcdf files provided by the obsolete program civx (in fortran) % ='pivdata_fluidimage': PIV data from software 'fluidimage' % .FieldType='image' for all kinds of images and movies, =FileType else % .FileIndexing='on'/'off', for data files (when series of indexed files are expected) % .Height: image height in pixels % .Width: image width in pixels % .BitDepth: nbre of bits per pixel (8 of 16) % .ColorType: 'greyscale' or 'color' % .NumberOfFrames: defined for images or movies % .FrameRate: nbre of frames per second, =[] for images % VideoObject: in case of video % % INPUT: % fileinput: name, including path, of the file to analyse %======================================================================= % Copyright 2008-2020, LEGI UMR 5519 / CNRS UGA G-INP, Grenoble, France % http://www.legi.grenoble-inp.fr % Joel.Sommeria - Joel.Sommeria (A) legi.cnrs.fr % % This file is part of the toolbox UVMAT. % % UVMAT is free software; you can redistribute it and/or modify % it under the terms of the GNU General Public License as published % by the Free Software Foundation; either version 2 of the license, % or (at your option) any later version. % % UVMAT is distributed in the hope that it will be useful, % but WITHOUT ANY WARRANTY; without even the implied warranty of % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the % GNU General Public License (see LICENSE.txt) for more details. %======================================================================= function [FileInfo,VideoObject]=get_file_info(fileinput) VideoObject=[]; FileInfo.FileType='';% input file does not exist FileInfo.FieldType=''; %default output % check the existence (not possible for OpenDAP data) if ~isempty(regexp(fileinput,'^http://'))|| exist(fileinput,'file') FileInfo.FileName=fileinput; FileInfo.FileType='txt'; %default else return %input file does not exist. end [tild,tild,FileExt]=fileparts(fileinput);%get the file extension FileExt switch FileExt case '.fig' FileInfo.FileType='figure'; case '.mat' FileInfo.FileType='mat'; case {'.xml','.xls','.dat','.bin'} FileInfo.FileType=regexprep(FileExt,'^.','');% eliminate the dot of the extension; case {'.seq','.sqb'} [A,FileInfo,timestamps,errormsg]=read_rdvision(fileinput,[]); case '.im7' try Input=readimx(fileinput); Image=Input.Frames{1}.Components{1}.Planes{1}; FileInfo.FileType='image_DaVis'; FileInfo.NumberOfFrames=numel(Input.Frames); FileInfo.Height=size(Image,2); FileInfo.Width=size(Image,1); FileInfo.TimeName='timestamp'; for ilist=1:numel(Input.Attributes) if strcmp(Input.Attributes{ilist}.Name,'_Date') DateString=Input.Attributes{ilist}.Value; end if strcmp(Input.Attributes{ilist}.Name,'_Time') TimeString=Input.Attributes{ilist}.Value; end end catch ME msgbox_uvmat('ERROR',{ME.message;'reading image from DaVis is possible only with Matlab version 2013 or earlier'}) return end case '.h5' hinfo=hdf5info(fileinput); if strcmp(hinfo.GroupHierarchy.Attributes(1).Value.Data,'MultipassPIVResults') FileInfo.FileType='pivdata_fluidimage'; FileInfo.CivStage=6; % A MODIFIER end case '.cine' [FileInfo,BitmapInfoHeader, CameraSetup]=readCineHeader(fileinput); FileInfo.FileType='cine_phantom'; FileInfo.NumberOfFrames=FileInfo.ImageCount; FileInfo.FrameRate=CameraSetup.FrameRate; FileInfo.Height=BitmapInfoHeader.biHeight; FileInfo.Width=BitmapInfoHeader.biWidth; FileInfo.BitDepth=BitmapInfoHeader.biBitCount; FileInfo.TimeName='video'; otherwise if ~isempty(FileExt)% exclude empty extension FileExt=regexprep(FileExt,'^.','');% eliminate the dot of the extension if ~isempty(FileExt) if ~isempty(imformats(FileExt))%case of images try imainfo=imfinfo(fileinput); if length(imainfo) >1 %case of image with multiple frames FileInfo=imainfo(1);%take info from the first frame FileInfo.NumberOfFrames=length(imainfo); FileInfo.FileType='multimage'; else FileInfo=imainfo; FileInfo.NumberOfFrames=1; FileInfo.FileType='image'; end FileInfo.FileName=FileInfo.Filename; %correct the info given by imfinfo nbfield=numel(fieldnames(FileInfo)); FileInfo=orderfields(FileInfo,[nbfield nbfield-1 nbfield-2 (1:nbfield-3)]); %reorder the fields of fileInfo for clarity end else error_nc=0; try [Data,tild,tild,errormsg]=nc2struct(fileinput,[]); if ~isempty(errormsg) error_nc=1; else if isfield(Data,'absolut_time_T0') && isfield(Data,'hart') && ~isempty(Data.absolut_time_T0) && ~isempty(Data.hart) FileInfo.FileType='civx'; if isfield(Data,'patch2') && isequal(Data.patch2,1) FileInfo.CivStage=6; elseif isfield(Data,'fix2') && isequal(Data.fix2,1) FileInfo.CivStage=5; elseif isfield(Data,'civ2')&& isequal(Data.civ2,1) FileInfo.CivStage=4; elseif isfield(Data,'patch')&&isequal(Data.patch,1) FileInfo.CivStage=3; elseif isfield(Data,'fix')&&isequal(Data.fix,1) FileInfo.CivStage=2; else FileInfo.CivStage=1; end elseif isfield(Data,'Conventions') && strcmp(Data.Conventions,'uvmat/civdata') FileInfo.FileType='civdata'; % test for civx velocity fields FileInfo.CivStage=Data.CivStage; else FileInfo.FileType='netcdf'; FileInfo.ListVarName=Data.ListVarName; end end catch ME error_nc=1; end if error_nc try if exist('VideoReader.m','file')%recent version of Matlab VideoObject=VideoReader(fileinput); FileInfo=get(VideoObject); FileInfo.FileType='video'; elseif exist('mmreader.m','file')% Matlab 2009a VideoObject=mmreader(fileinput); FileInfo=get(VideoObject); FileInfo.FileType='mmreader'; end FileInfo.BitDepth=FileInfo.BitsPerPixel/3; FileInfo.ColorType='truecolor'; FileInfo.TimeName='video'; FileInfo.FileName=fileinput; nbfield=numel(fieldnames(FileInfo)); FileInfo=orderfields(FileInfo,[nbfield nbfield-4 nbfield-3 nbfield-1 nbfield-2 (1:nbfield-5)]); %reorder the fields of fileInfo for clarity if ~isfield(FileInfo,'NumberOfFrames') FileInfo.NumberOfFrames=floor(FileInfo.Duration*FileInfo.FrameRate); end end end end end end end if ismember (FileInfo.FileType,{'mat','image','image_DaVis','multimage','mmreader','cine_phantom','video','netcdf','civdata'}) FileInfo.FileIndexing='on'; % allow to detect file index for scanning series else FileInfo.FileIndexing='off'; end FileInfo.FieldType=FileInfo.FileType;%default switch FileInfo.FileType case {'image','multimage','video','mmreader','rdvision','image_DaVis','cine_phantom'} FileInfo.FieldType='image'; case {'civx','civdata','pivdata_fluidimage'} FileInfo.FieldType='civdata'; end