Android determines the file type (video, audio, image, etc)

Mediafile. Java

Package COM. jaycee. vplayer. util; import Java. util. hashmap; import Java. util. iterator;/*** determine the file type * mediascanner helper class. */public class mediafile {// comma separated list of all file extensions supported by the media category public static string sfileextensions; // audio file types public static final int file_type_mp3 = 1; public static final int file_type_m4a = 2; public static final int fil E_type_wav = 3; public static final int file_type_amr = 4; public static final int file_type_awb = 5; public static final int file_type_wma = 6; public static final int file_type_ogg = 7; private Static final int first_audio_file_type = file_type_mp3; Private Static final int last_audio_file_type = file_type_ogg; // MIDI file types public static final int file_type_mid = 11; public static final in T file_type_smf = 12; public static final int file_type_imy = 13; Private Static final int first_midi_file_type = file_type_mid; Private Static final int last_midi_file_type = file_type_imy; // video file types public static final int file_type_mp4 = 21; public static final int file_type_m4v = 22; public static final int file_type_3gpp = 23; public static final int file_type_3gpp2 = 24; Public sta TIC final int file_type_wmv = 25; Private Static final int first_video_file_type = file_type_mp4; Private Static final int compression = file_type_wmv; // image file types public static final int file_type_jpeg = 31; public static final int file_type_gif = 32; public static final int file_type_png = 33; public static final int file_type_bmp = 34; public static final int file_type_wbmp = 3 5; Private Static final int first_image_file_type = file_type_jpeg; Private Static final int types = file_type_wbmp; // playlist file types public static final int file_type_m3u = 41; public static final int file_type_pls = 42; public static final int file_type_wpl = 43; Private Static final int first_playlist_file_type = file_type_m3u; Private Static final int last_playlist_file_ty Pe = file_type_wpl; // static internal class mediafiletype {int filetype; string mimetype; mediafiletype (INT filetype, string mimetype) {This. filetype = filetype; this. mimetype = mimetype ;}} Private Static hashmap <string, mediafiletype> sfiletypemap = new hashmap <string, mediafiletype> (); Private Static hashmap <string, integer> smimetypemap = new hashmap <string, integer> (); static void addfiletype (String extension, int filetype, string mimetype) {sfiletypemap. put (extension, new mediafiletype (filetype, mimetype); smimetypemap. put (mimetype, new INTEGER (filetype);} static {addfiletype ("MP3", file_type_mp3, "audio/MPEG"); addfiletype ("m4a", file_type_m4a, "audio/MP4"); addfiletype ("WAV", file_type_wav, "audio/X-WAV"); addfiletype ("Amr", file_type_amr, "audio/AMR "); addfiletype ("AWB", file _ Type_awb, "audio/AMR-WB"); addfiletype ("WMA", file_type_wma, "audio/X-MS-WMA"); addfiletype ("Ogg", file_type_ogg, "Application/Ogg"); addfiletype ("mid", file_type_mid, "audio/Midi"); addfiletype ("xmf", file_type_mid, "audio/Midi "); addfiletype ("rtttl", file_type_mid, "audio/Midi"); addfiletype ("SMF", file_type_smf, "audio/SP-Midi"); addfiletype ("IMy", file_type_imy, "audio/imelody"); addfiletype ("MP4", file_type_mp4, "Video/MP4"); addfiletype ("m4v", file_type_m4v, "Video/MP4"); addfiletype ("3GP", file_type_3gpp, "Video/3GPP"); addfiletype ("3GPP", file_type_3gpp, "Video/3GPP"); addfiletype ("3g2", file_type_3gpp2, "Video/3gpp2 "); addfiletype ("3gpp2", file_type_3gpp2, "Video/3gpp2"); addfiletype ("WMV", file_type_wmv, "Video/X-MS-WMV"); addfiletype ("jpg ", file_type_jpeg, "image/JPEG"); addfil Etype ("Jpeg", file_type_jpeg, "image/JPEG"); addfiletype ("GIF", file_type_gif, "image/GIF"); addfiletype ("PNG", file_type_png, "image/PNG"); addfiletype ("BMP", file_type_bmp, "image/X-MS-BMP"); addfiletype ("wbmp", file_type_wbmp, "image/vnd. WAP. wbmp "); addfiletype (" M3U ", file_type_m3u," audio/X-mpegurl "); addfiletype (" pls ", file_type_pls," audio/X-scpls "); addfiletype ("WPL", file_type_wpl, "applic Ation/vnd. MS-WPL "); // compute file extensions list for native Media extends stringbuilder builder = new stringbuilder (); iterator <string> iterator = sfiletypemap. keyset (). iterator (); While (iterator. hasnext () {If (builder. length ()> 0) {builder. append (',');} builder. append (iterator. next ();} sfileextensions = builder. tostring ();} public static final string unknown_string = "<Unknown>"; Publ IC static Boolean isaudiofiletype (INT filetype) {return (filetype >=first_audio_file_type & filetype <= enabled) | (filetype >=first_midi_file_type & filetype <= enabled ));} public static Boolean isvideofiletype (INT filetype) {return (filetype> = first_video_file_type & filetype <= last_video_file_type);} public static Boolean isimagefiletype (INT filetype) {RET Urn (filetype >=first_image_file_type & filetype <= last_image_file_type);} public static Boolean isplaylistfiletype (INT filetype) {return (filetype >=struct & filetype <= struct );} public static mediafiletype getfiletype (string path) {int lastdot = path. lastindexof (". "); If (lastdot <0) return NULL; return sfiletypemap. get (path. substring (lastdot + 1 ). to Uppercase ();} // determine the file type public static Boolean isvideofiletype (string path) based on the video file path {// Add mediafiletype = getfiletype (PATH); If (null! = Type) {return isvideofiletype (type. filetype);} return false;} // determine the file type based on the audio file path. Public static Boolean isaudiofiletype (string path) {// Add mediafiletype = getfiletype (PATH ); if (null! = Type) {return isaudiofiletype (type. filetype);} return false;} // view the file type according to the MIME type public static int getfiletypeformimetype (string mimetype) {integer value = smimetypemap. get (mimetype); Return (value = NULL? 0: value. intvalue ());}}