MediaFile.java revision f9cf277cda5d7cdf8383331892cca0734a850e19 
1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.media;
18
19import android.content.ContentValues;
20import android.provider.MediaStore.Audio;
21import android.provider.MediaStore.Images;
22import android.provider.MediaStore.Video;
23import android.media.DecoderCapabilities;
24import android.media.DecoderCapabilities.VideoDecoder;
25import android.media.DecoderCapabilities.AudioDecoder;
26import android.mtp.MtpConstants;
27
28import java.util.HashMap;
29import java.util.Iterator;
30import java.util.List;
31
32/**
33 * MediaScanner helper class.
34 *
35 * {@hide}
36 */
37public class MediaFile {
38
39    // Audio file types
40    public static final int FILE_TYPE_MP3     = 1;
41    public static final int FILE_TYPE_M4A     = 2;
42    public static final int FILE_TYPE_WAV     = 3;
43    public static final int FILE_TYPE_AMR     = 4;
44    public static final int FILE_TYPE_AWB     = 5;
45    public static final int FILE_TYPE_WMA     = 6;
46    public static final int FILE_TYPE_OGG     = 7;
47    public static final int FILE_TYPE_AAC     = 8;
48    public static final int FILE_TYPE_MKA     = 9;
49    public static final int FILE_TYPE_FLAC    = 10;
50    private static final int FIRST_AUDIO_FILE_TYPE = FILE_TYPE_MP3;
51    private static final int LAST_AUDIO_FILE_TYPE = FILE_TYPE_FLAC;
52
53    // MIDI file types
54    public static final int FILE_TYPE_MID     = 11;
55    public static final int FILE_TYPE_SMF     = 12;
56    public static final int FILE_TYPE_IMY     = 13;
57    private static final int FIRST_MIDI_FILE_TYPE = FILE_TYPE_MID;
58    private static final int LAST_MIDI_FILE_TYPE = FILE_TYPE_IMY;
59
60    // Video file types
61    public static final int FILE_TYPE_MP4     = 21;
62    public static final int FILE_TYPE_M4V     = 22;
63    public static final int FILE_TYPE_3GPP    = 23;
64    public static final int FILE_TYPE_3GPP2   = 24;
65    public static final int FILE_TYPE_WMV     = 25;
66    public static final int FILE_TYPE_ASF     = 26;
67    public static final int FILE_TYPE_MKV     = 27;
68    public static final int FILE_TYPE_MP2TS   = 28;
69    public static final int FILE_TYPE_AVI     = 29;
70    private static final int FIRST_VIDEO_FILE_TYPE = FILE_TYPE_MP4;
71    private static final int LAST_VIDEO_FILE_TYPE = FILE_TYPE_AVI;
72
73    // Image file types
74    public static final int FILE_TYPE_JPEG    = 31;
75    public static final int FILE_TYPE_GIF     = 32;
76    public static final int FILE_TYPE_PNG     = 33;
77    public static final int FILE_TYPE_BMP     = 34;
78    public static final int FILE_TYPE_WBMP    = 35;
79    private static final int FIRST_IMAGE_FILE_TYPE = FILE_TYPE_JPEG;
80    private static final int LAST_IMAGE_FILE_TYPE = FILE_TYPE_WBMP;
81
82    // Playlist file types
83    public static final int FILE_TYPE_M3U      = 41;
84    public static final int FILE_TYPE_PLS      = 42;
85    public static final int FILE_TYPE_WPL      = 43;
86    public static final int FILE_TYPE_HTTPLIVE = 44;
87
88    private static final int FIRST_PLAYLIST_FILE_TYPE = FILE_TYPE_M3U;
89    private static final int LAST_PLAYLIST_FILE_TYPE = FILE_TYPE_HTTPLIVE;
90
91    // Drm file types
92    public static final int FILE_TYPE_FL      = 51;
93    private static final int FIRST_DRM_FILE_TYPE = FILE_TYPE_FL;
94    private static final int LAST_DRM_FILE_TYPE = FILE_TYPE_FL;
95
96    // Other popular file types
97    public static final int FILE_TYPE_TEXT          = 100;
98    public static final int FILE_TYPE_HTML          = 101;
99    public static final int FILE_TYPE_PDF           = 102;
100    public static final int FILE_TYPE_XML           = 103;
101    public static final int FILE_TYPE_MS_WORD       = 104;
102    public static final int FILE_TYPE_MS_EXCEL      = 105;
103    public static final int FILE_TYPE_MS_POWERPOINT = 106;
104    public static final int FILE_TYPE_ZIP           = 107;
105
106    static class MediaFileType {
107
108        int fileType;
109        String mimeType;
110
111        MediaFileType(int fileType, String mimeType) {
112            this.fileType = fileType;
113            this.mimeType = mimeType;
114        }
115    }
116
117    private static HashMap<String, MediaFileType> sFileTypeMap
118            = new HashMap<String, MediaFileType>();
119    private static HashMap<String, Integer> sMimeTypeMap
120            = new HashMap<String, Integer>();
121    // maps file extension to MTP format code
122    private static HashMap<String, Integer> sFileTypeToFormatMap
123            = new HashMap<String, Integer>();
124    // maps mime type to MTP format code
125    private static HashMap<String, Integer> sMimeTypeToFormatMap
126            = new HashMap<String, Integer>();
127    // maps MTP format code to mime type
128    private static HashMap<Integer, String> sFormatToMimeTypeMap
129            = new HashMap<Integer, String>();
130
131    static void addFileType(String extension, int fileType, String mimeType) {
132        sFileTypeMap.put(extension, new MediaFileType(fileType, mimeType));
133        sMimeTypeMap.put(mimeType, Integer.valueOf(fileType));
134    }
135
136    static void addFileType(String extension, int fileType, String mimeType, int mtpFormatCode) {
137        addFileType(extension, fileType, mimeType);
138        sFileTypeToFormatMap.put(extension, Integer.valueOf(mtpFormatCode));
139        sMimeTypeToFormatMap.put(mimeType, Integer.valueOf(mtpFormatCode));
140        sFormatToMimeTypeMap.put(mtpFormatCode, mimeType);
141    }
142
143    private static boolean isWMAEnabled() {
144        List<AudioDecoder> decoders = DecoderCapabilities.getAudioDecoders();
145        int count = decoders.size();
146        for (int i = 0; i < count; i++) {
147            AudioDecoder decoder = decoders.get(i);
148            if (decoder == AudioDecoder.AUDIO_DECODER_WMA) {
149                return true;
150            }
151        }
152        return false;
153    }
154
155    private static boolean isWMVEnabled() {
156        List<VideoDecoder> decoders = DecoderCapabilities.getVideoDecoders();
157        int count = decoders.size();
158        for (int i = 0; i < count; i++) {
159            VideoDecoder decoder = decoders.get(i);
160            if (decoder == VideoDecoder.VIDEO_DECODER_WMV) {
161                return true;
162            }
163        }
164        return false;
165    }
166
167    static {
168        addFileType("MP3", FILE_TYPE_MP3, "audio/mpeg", MtpConstants.FORMAT_MP3);
169        addFileType("M4A", FILE_TYPE_M4A, "audio/mp4", MtpConstants.FORMAT_MPEG);
170        addFileType("WAV", FILE_TYPE_WAV, "audio/x-wav", MtpConstants.FORMAT_WAV);
171        addFileType("AMR", FILE_TYPE_AMR, "audio/amr");
172        addFileType("AWB", FILE_TYPE_AWB, "audio/amr-wb");
173        if (isWMAEnabled()) {
174            addFileType("WMA", FILE_TYPE_WMA, "audio/x-ms-wma", MtpConstants.FORMAT_WMA);
175        }
176        addFileType("OGG", FILE_TYPE_OGG, "application/ogg", MtpConstants.FORMAT_OGG);
177        addFileType("OGA", FILE_TYPE_OGG, "application/ogg", MtpConstants.FORMAT_OGG);
178        addFileType("AAC", FILE_TYPE_AAC, "audio/aac", MtpConstants.FORMAT_AAC);
179        addFileType("AAC", FILE_TYPE_AAC, "audio/aac-adts", MtpConstants.FORMAT_AAC);
180        addFileType("MKA", FILE_TYPE_MKA, "audio/x-matroska");
181
182        addFileType("MID", FILE_TYPE_MID, "audio/midi");
183        addFileType("MIDI", FILE_TYPE_MID, "audio/midi");
184        addFileType("XMF", FILE_TYPE_MID, "audio/midi");
185        addFileType("RTTTL", FILE_TYPE_MID, "audio/midi");
186        addFileType("SMF", FILE_TYPE_SMF, "audio/sp-midi");
187        addFileType("IMY", FILE_TYPE_IMY, "audio/imelody");
188        addFileType("RTX", FILE_TYPE_MID, "audio/midi");
189        addFileType("OTA", FILE_TYPE_MID, "audio/midi");
190        addFileType("MXMF", FILE_TYPE_MID, "audio/midi");
191
192        addFileType("MPEG", FILE_TYPE_MP4, "video/mpeg", MtpConstants.FORMAT_MPEG);
193        addFileType("MPG", FILE_TYPE_MP4, "video/mpeg", MtpConstants.FORMAT_MPEG);
194        addFileType("MP4", FILE_TYPE_MP4, "video/mp4", MtpConstants.FORMAT_MPEG);
195        addFileType("M4V", FILE_TYPE_M4V, "video/mp4", MtpConstants.FORMAT_MPEG);
196        addFileType("3GP", FILE_TYPE_3GPP, "video/3gpp",  MtpConstants.FORMAT_3GP_CONTAINER);
197        addFileType("3GPP", FILE_TYPE_3GPP, "video/3gpp", MtpConstants.FORMAT_3GP_CONTAINER);
198        addFileType("3G2", FILE_TYPE_3GPP2, "video/3gpp2", MtpConstants.FORMAT_3GP_CONTAINER);
199        addFileType("3GPP2", FILE_TYPE_3GPP2, "video/3gpp2", MtpConstants.FORMAT_3GP_CONTAINER);
200        addFileType("MKV", FILE_TYPE_MKV, "video/x-matroska");
201        addFileType("WEBM", FILE_TYPE_MKV, "video/x-matroska");
202        addFileType("TS", FILE_TYPE_MP2TS, "video/mp2ts");
203        addFileType("AVI", FILE_TYPE_AVI, "video/avi");
204
205        if (isWMVEnabled()) {
206            addFileType("WMV", FILE_TYPE_WMV, "video/x-ms-wmv", MtpConstants.FORMAT_WMV);
207            addFileType("ASF", FILE_TYPE_ASF, "video/x-ms-asf");
208        }
209
210        addFileType("JPG", FILE_TYPE_JPEG, "image/jpeg", MtpConstants.FORMAT_EXIF_JPEG);
211        addFileType("JPEG", FILE_TYPE_JPEG, "image/jpeg", MtpConstants.FORMAT_EXIF_JPEG);
212        addFileType("GIF", FILE_TYPE_GIF, "image/gif", MtpConstants.FORMAT_GIF);
213        addFileType("PNG", FILE_TYPE_PNG, "image/png", MtpConstants.FORMAT_PNG);
214        addFileType("BMP", FILE_TYPE_BMP, "image/x-ms-bmp", MtpConstants.FORMAT_BMP);
215        addFileType("WBMP", FILE_TYPE_WBMP, "image/vnd.wap.wbmp");
216
217        addFileType("M3U", FILE_TYPE_M3U, "audio/x-mpegurl", MtpConstants.FORMAT_M3U_PLAYLIST);
218        addFileType("M3U", FILE_TYPE_M3U, "application/x-mpegurl", MtpConstants.FORMAT_M3U_PLAYLIST);
219        addFileType("PLS", FILE_TYPE_PLS, "audio/x-scpls", MtpConstants.FORMAT_PLS_PLAYLIST);
220        addFileType("WPL", FILE_TYPE_WPL, "application/vnd.ms-wpl", MtpConstants.FORMAT_WPL_PLAYLIST);
221        addFileType("M3U8", FILE_TYPE_HTTPLIVE, "application/vnd.apple.mpegurl");
222        addFileType("M3U8", FILE_TYPE_HTTPLIVE, "audio/mpegurl");
223        addFileType("M3U8", FILE_TYPE_HTTPLIVE, "audio/x-mpegurl");
224
225        addFileType("FL", FILE_TYPE_FL, "application/x-android-drm-fl");
226
227        addFileType("TXT", FILE_TYPE_TEXT, "text/plain", MtpConstants.FORMAT_TEXT);
228        addFileType("HTM", FILE_TYPE_HTML, "text/html", MtpConstants.FORMAT_HTML);
229        addFileType("HTML", FILE_TYPE_HTML, "text/html", MtpConstants.FORMAT_HTML);
230        addFileType("PDF", FILE_TYPE_PDF, "application/pdf");
231        addFileType("DOC", FILE_TYPE_MS_WORD, "application/msword", MtpConstants.FORMAT_MS_WORD_DOCUMENT);
232        addFileType("XLS", FILE_TYPE_MS_EXCEL, "application/vnd.ms-excel", MtpConstants.FORMAT_MS_EXCEL_SPREADSHEET);
233        addFileType("PPT", FILE_TYPE_MS_POWERPOINT, "application/mspowerpoint", MtpConstants.FORMAT_MS_POWERPOINT_PRESENTATION);
234        addFileType("FLAC", FILE_TYPE_FLAC, "audio/flac", MtpConstants.FORMAT_FLAC);
235        addFileType("ZIP", FILE_TYPE_ZIP, "application/zip");
236    }
237
238    public static boolean isAudioFileType(int fileType) {
239        return ((fileType >= FIRST_AUDIO_FILE_TYPE &&
240                fileType <= LAST_AUDIO_FILE_TYPE) ||
241                (fileType >= FIRST_MIDI_FILE_TYPE &&
242                fileType <= LAST_MIDI_FILE_TYPE));
243    }
244
245    public static boolean isVideoFileType(int fileType) {
246        return (fileType >= FIRST_VIDEO_FILE_TYPE &&
247                fileType <= LAST_VIDEO_FILE_TYPE);
248    }
249
250    public static boolean isImageFileType(int fileType) {
251        return (fileType >= FIRST_IMAGE_FILE_TYPE &&
252                fileType <= LAST_IMAGE_FILE_TYPE);
253    }
254
255    public static boolean isPlayListFileType(int fileType) {
256        return (fileType >= FIRST_PLAYLIST_FILE_TYPE &&
257                fileType <= LAST_PLAYLIST_FILE_TYPE);
258    }
259
260    public static boolean isDrmFileType(int fileType) {
261        return (fileType >= FIRST_DRM_FILE_TYPE &&
262                fileType <= LAST_DRM_FILE_TYPE);
263    }
264
265    public static MediaFileType getFileType(String path) {
266        int lastDot = path.lastIndexOf(".");
267        if (lastDot < 0)
268            return null;
269        return sFileTypeMap.get(path.substring(lastDot + 1).toUpperCase());
270    }
271
272    public static boolean isMimeTypeMedia(String mimeType) {
273        int fileType = getFileTypeForMimeType(mimeType);
274        return isAudioFileType(fileType) || isVideoFileType(fileType)
275                || isImageFileType(fileType) || isPlayListFileType(fileType);
276    }
277
278    // generates a title based on file name
279    public static String getFileTitle(String path) {
280        // extract file name after last slash
281        int lastSlash = path.lastIndexOf('/');
282        if (lastSlash >= 0) {
283            lastSlash++;
284            if (lastSlash < path.length()) {
285                path = path.substring(lastSlash);
286            }
287        }
288        // truncate the file extension (if any)
289        int lastDot = path.lastIndexOf('.');
290        if (lastDot > 0) {
291            path = path.substring(0, lastDot);
292        }
293        return path;
294    }
295
296    public static int getFileTypeForMimeType(String mimeType) {
297        Integer value = sMimeTypeMap.get(mimeType);
298        return (value == null ? 0 : value.intValue());
299    }
300
301    public static String getMimeTypeForFile(String path) {
302        MediaFileType mediaFileType = getFileType(path);
303        return (mediaFileType == null ? null : mediaFileType.mimeType);
304    }
305
306    public static int getFormatCode(String fileName, String mimeType) {
307        if (mimeType != null) {
308            Integer value = sMimeTypeToFormatMap.get(mimeType);
309            if (value != null) {
310                return value.intValue();
311            }
312        }
313        int lastDot = fileName.lastIndexOf('.');
314        if (lastDot > 0) {
315            String extension = fileName.substring(lastDot + 1);
316            Integer value = sFileTypeToFormatMap.get(extension);
317            if (value != null) {
318                return value.intValue();
319            }
320        }
321        return MtpConstants.FORMAT_UNDEFINED;
322    }
323
324    public static String getMimeTypeForFormatCode(int formatCode) {
325        return sFormatToMimeTypeMap.get(formatCode);
326    }
327}
328