| 1 | %'get_file_type': determine info about a file (image, multimage, civdata,...) . |
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| 2 | %------------------------------------------------------------------------ |
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| 3 | % [FileType,FileInfo,Object]=get_file_type(fileinput) |
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| 4 | % |
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| 5 | % OUTPUT: |
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| 6 | % FileType: type of file |
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| 7 | % FileInfo: structure containing info on the file (case of images or video), in particular |
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| 8 | % .Height: image height in pixels |
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| 9 | % .Width: image width in pixels |
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| 10 | % .BitDepth: nbre of bits per pixel (8 of 16) |
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| 11 | % .ColorType: 'greyscale' or 'color' |
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| 12 | % .NumberOfFrames |
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| 13 | % .FrameRate: nbre of frames per second, =[] for images |
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| 14 | % Object: in case of video |
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| 15 | % |
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| 16 | % INPUT: |
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| 17 | % fileinput: name, including path, of the file to analyse |
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| 18 | function [FileType,FileInfo,VideoObject]=get_file_type(fileinput) |
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| 19 | %%%% TODO: suppress the output argument FileType, contained in FileInfo %%%% |
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| 20 | FileInfo=[];% will remain empty in the absence of input file |
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| 21 | VideoObject=[]; |
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| 22 | if exist(fileinput,'file') |
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| 23 | FileInfo.FileName=fileinput; |
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| 24 | FileInfo.FileType='txt'; %default |
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| 25 | FileType='txt';%default, text file |
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| 26 | else |
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| 27 | FileType=''; |
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| 28 | return |
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| 29 | end |
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| 30 | [tild,tild,FileExt]=fileparts(fileinput); |
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| 31 | |
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| 32 | switch FileExt |
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| 33 | case '.fig' |
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| 34 | FileInfo.FileType='figure'; |
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| 35 | FileType='figure'; |
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| 36 | case '.xml' |
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| 37 | FileInfo.FileType='xml'; |
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| 38 | FileType='xml'; |
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| 39 | case '.xls' |
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| 40 | FileInfo.FileType='xls'; |
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| 41 | FileType='xls'; |
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| 42 | case '.dat' |
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| 43 | FileInfo.FileType='dat'; |
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| 44 | FileType='dat'; |
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| 45 | otherwise |
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| 46 | if ~isempty(FileExt)% exclude empty extension |
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| 47 | FileExt=regexprep(FileExt,'^.','');% eliminate the dot of the extension |
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| 48 | if ~isempty(FileExt) |
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| 49 | if ~isempty(imformats(FileExt))%case of images |
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| 50 | try |
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| 51 | imainfo=imfinfo(fileinput); |
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| 52 | if length(imainfo) >1 %case of image with multiple frames |
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| 53 | FileType='multimage'; |
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| 54 | FileInfo=imainfo(1);%take info from the first frame |
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| 55 | FileInfo.NumberOfFrames=length(imainfo); |
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| 56 | else |
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| 57 | FileType='image'; |
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| 58 | FileInfo=imainfo; |
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| 59 | FileInfo.NumberOfFrames=1; |
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| 60 | end |
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| 61 | FileInfo.FileName=FileInfo.Filename; %correct the info given by imfinfo |
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| 62 | FileInfo.FileType=FileType; |
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| 63 | end |
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| 64 | else |
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| 65 | error_nc=0; |
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| 66 | try |
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| 67 | % [Data,tild,tild,errormsg]=nc2struct(fileinput,'ListGlobalAttribute','absolut_time_T0','Conventions',... |
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| 68 | % 'CivStage','patch2','fix2','civ2','patch','fix','hart'); |
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| 69 | [Data,tild,tild,errormsg]=nc2struct(fileinput,[]); |
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| 70 | if ~isempty(errormsg) |
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| 71 | error_nc=1; |
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| 72 | else |
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| 73 | if isfield(Data,'absolut_time_T0') && isfield(Data,'hart') && ~isempty(Data.absolut_time_T0) && ~isempty(Data.hart) |
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| 74 | FileInfo.FileType='civx'; |
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| 75 | FileType='civx'; % test for civx velocity fields |
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| 76 | if isfield(Data,'patch2') && isequal(Data.patch2,1) |
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| 77 | FileInfo.CivStage=6; |
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| 78 | elseif isfield(Data,'fix2') && isequal(Data.fix2,1) |
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| 79 | FileInfo.CivStage=5; |
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| 80 | elseif isfield(Data,'civ2')&& isequal(Data.civ2,1) |
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| 81 | FileInfo.CivStage=4; |
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| 82 | elseif isfield(Data,'patch')&&isequal(Data.patch,1) |
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| 83 | FileInfo.CivStage=3; |
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| 84 | elseif isfield(Data,'fix')&&isequal(Data.fix,1) |
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| 85 | FileInfo.CivStage=2; |
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| 86 | else |
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| 87 | FileInfo.CivStage=1; |
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| 88 | end |
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| 89 | elseif isfield(Data,'Conventions') && strcmp(Data.Conventions,'uvmat/civdata') |
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| 90 | FileInfo.FileType='civdata'; % test for civx velocity fields |
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| 91 | FileType='civdata'; % test for civx velocity fields |
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| 92 | FileInfo.CivStage=Data.CivStage; |
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| 93 | else |
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| 94 | FileInfo.FileType='netcdf'; |
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| 95 | FileType='netcdf'; |
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| 96 | FileInfo.ListVarName=Data.ListVarName; |
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| 97 | end |
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| 98 | end |
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| 99 | catch ME |
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| 100 | error_nc=1; |
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| 101 | end |
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| 102 | if error_nc |
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| 103 | try |
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| 104 | if exist('VideoReader.m','file')%recent version of Matlab |
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| 105 | VideoObject=VideoReader(fileinput); |
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| 106 | FileInfo=get(VideoObject); |
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| 107 | FileType='video'; |
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| 108 | elseif exist('mmreader.m','file')% Matlab 2009a |
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| 109 | VideoObject=mmreader(fileinput); |
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| 110 | FileInfo=get(VideoObject); |
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| 111 | FileType='mmreader'; |
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| 112 | end |
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| 113 | FileInfo.FileName=fileinput; |
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| 114 | FileInfo.FileType=FileType; |
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| 115 | FileInfo.BitDepth=FileInfo.BitsPerPixel/3; |
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| 116 | end |
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| 117 | end |
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| 118 | end |
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| 119 | end |
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| 120 | end |
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| 121 | end |
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