MediaFile.java revision 45b43622e329c25c6070a3f2f2fc2ba5a14533bb 
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;
26
27import java.util.HashMap;
28import java.util.Iterator;
29import java.util.List;
30
31/**
32 * MediaScanner helper class.
33 *
34 * {@hide}
35 */
36public class MediaFile {
37
38    // Audio file types
39    public static final int FILE_TYPE_MP3     = 1;
40    public static final int FILE_TYPE_M4A     = 2;
41    public static final int FILE_TYPE_WAV     = 3;
42    public static final int FILE_TYPE_AMR     = 4;
43    public static final int FILE_TYPE_AWB     = 5;
44    public static final int FILE_TYPE_WMA     = 6;
45    public static final int FILE_TYPE_OGG     = 7;
46    public static final int FILE_TYPE_AAC     = 8;
47    public static final int FILE_TYPE_MKA     = 9;
48    private static final int FIRST_AUDIO_FILE_TYPE = FILE_TYPE_MP3;
49    private static final int LAST_AUDIO_FILE_TYPE = FILE_TYPE_MKA;
50
51    // MIDI file types
52    public static final int FILE_TYPE_MID     = 11;
53    public static final int FILE_TYPE_SMF     = 12;
54    public static final int FILE_TYPE_IMY     = 13;
55    private static final int FIRST_MIDI_FILE_TYPE = FILE_TYPE_MID;
56    private static final int LAST_MIDI_FILE_TYPE = FILE_TYPE_IMY;
57
58    // Video file types
59    public static final int FILE_TYPE_MP4     = 21;
60    public static final int FILE_TYPE_M4V     = 22;
61    public static final int FILE_TYPE_3GPP    = 23;
62    public static final int FILE_TYPE_3GPP2   = 24;
63    public static final int FILE_TYPE_WMV     = 25;
64    public static final int FILE_TYPE_ASF     = 26;
65    public static final int FILE_TYPE_MKV     = 27;
66    public static final int FILE_TYPE_MP2TS   = 28;
67    private static final int FIRST_VIDEO_FILE_TYPE = FILE_TYPE_MP4;
68    private static final int LAST_VIDEO_FILE_TYPE = FILE_TYPE_MP2TS;
69
70    // Image file types
71    public static final int FILE_TYPE_JPEG    = 31;
72    public static final int FILE_TYPE_GIF     = 32;
73    public static final int FILE_TYPE_PNG     = 33;
74    public static final int FILE_TYPE_BMP     = 34;
75    public static final int FILE_TYPE_WBMP    = 35;
76    private static final int FIRST_IMAGE_FILE_TYPE = FILE_TYPE_JPEG;
77    private static final int LAST_IMAGE_FILE_TYPE = FILE_TYPE_WBMP;
78
79    // Playlist file types
80    public static final int FILE_TYPE_M3U     = 41;
81    public static final int FILE_TYPE_PLS     = 42;
82    public static final int FILE_TYPE_WPL     = 43;
83    private static final int FIRST_PLAYLIST_FILE_TYPE = FILE_TYPE_M3U;
84    private static final int LAST_PLAYLIST_FILE_TYPE = FILE_TYPE_WPL;
85
86    // Other popular file types
87    public static final int FILE_TYPE_TEXT          = 100;
88    public static final int FILE_TYPE_HTML          = 101;
89    public static final int FILE_TYPE_PDF           = 102;
90    public static final int FILE_TYPE_XML           = 103;
91    public static final int FILE_TYPE_MS_WORD       = 104;
92    public static final int FILE_TYPE_MS_EXCEL      = 105;
93    public static final int FILE_TYPE_MS_POWERPOINT = 106;
94    public static final int FILE_TYPE_FLAC          = 107;
95    public static final int FILE_TYPE_ZIP           = 108;
96
97    static class MediaFileType {
98
99        int fileType;
100        String mimeType;
101
102        MediaFileType(int fileType, String mimeType) {
103            this.fileType = fileType;
104            this.mimeType = mimeType;
105        }
106    }
107
108    private static HashMap<String, MediaFileType> sFileTypeMap
109            = new HashMap<String, MediaFileType>();
110    private static HashMap<String, Integer> sMimeTypeMap
111            = new HashMap<String, Integer>();
112    // maps file extension to MTP format code
113    private static HashMap<String, Integer> sFileTypeToFormatMap
114            = new HashMap<String, Integer>();
115    // maps mime type to MTP format code
116    private static HashMap<String, Integer> sMimeTypeToFormatMap
117            = new HashMap<String, Integer>();
118    // maps MTP format code to mime type
119    private static HashMap<Integer, String> sFormatToMimeTypeMap
120            = new HashMap<Integer, String>();
121
122    static void addFileType(String extension, int fileType, String mimeType) {
123        sFileTypeMap.put(extension, new MediaFileType(fileType, mimeType));
124        sMimeTypeMap.put(mimeType, Integer.valueOf(fileType));
125    }
126
127    static void addFileType(String extension, int fileType, String mimeType, int mtpFormatCode) {
128        addFileType(extension, fileType, mimeType);
129        sFileTypeToFormatMap.put(extension, Integer.valueOf(mtpFormatCode));
130        sMimeTypeToFormatMap.put(mimeType, Integer.valueOf(mtpFormatCode));
131        sFormatToMimeTypeMap.put(mtpFormatCode, mimeType);
132    }
133
134    private static boolean isWMAEnabled() {
135        List<AudioDecoder> decoders = DecoderCapabilities.getAudioDecoders();
136        for (AudioDecoder decoder: decoders) {
137            if (decoder == AudioDecoder.AUDIO_DECODER_WMA) {
138                return true;
139            }
140        }
141        return false;
142    }
143
144    static {
145        addFileType("MP3", FILE_TYPE_MP3, "audio/mpeg", MtpConstants.FORMAT_MP3);
146        addFileType("M4A", FILE_TYPE_M4A, "audio/mp4", MtpConstants.FORMAT_MPEG);
147        addFileType("WAV", FILE_TYPE_WAV, "audio/x-wav", MtpConstants.FORMAT_WAV);
148        addFileType("AMR", FILE_TYPE_AMR, "audio/amr");
149        addFileType("AWB", FILE_TYPE_AWB, "audio/amr-wb");
150        if (isWMAEnabled()) {
151            addFileType("WMA", FILE_TYPE_WMA, "audio/x-ms-wma", MtpConstants.FORMAT_WMA);
152        }
153        addFileType("OGG", FILE_TYPE_OGG, "application/ogg", MtpConstants.FORMAT_OGG);
154        addFileType("OGA", FILE_TYPE_OGG, "application/ogg", MtpConstants.FORMAT_OGG);
155        addFileType("AAC", FILE_TYPE_AAC, "audio/aac", MtpConstants.FORMAT_AAC);
156        addFileType("MKA", FILE_TYPE_MKA, "audio/x-matroska");
157
158        addFileType("MID", FILE_TYPE_MID, "audio/midi");
159        addFileType("MIDI", FILE_TYPE_MID, "audio/midi");
160        addFileType("XMF", FILE_TYPE_MID, "audio/midi");
161        addFileType("RTTTL", FILE_TYPE_MID, "audio/midi");
162        addFileType("SMF", FILE_TYPE_SMF, "audio/sp-midi");
163        addFileType("IMY", FILE_TYPE_IMY, "audio/imelody");
164        addFileType("RTX", FILE_TYPE_MID, "audio/midi");
165        addFileType("OTA", FILE_TYPE_MID, "audio/midi");
166
167        addFileType("MPEG", FILE_TYPE_MP4, "video/mpeg", MtpConstants.FORMAT_MPEG);
168        addFileType("MP4", FILE_TYPE_MP4, "video/mp4", MtpConstants.FORMAT_MPEG);
169        addFileType("M4V", FILE_TYPE_M4V, "video/mp4", MtpConstants.FORMAT_MPEG);
170        addFileType("3GP", FILE_TYPE_3GPP, "video/3gpp",  MtpConstants.FORMAT_3GP_CONTAINER);
171        addFileType("3GPP", FILE_TYPE_3GPP, "video/3gpp", MtpConstants.FORMAT_3GP_CONTAINER);
172        addFileType("3G2", FILE_TYPE_3GPP2, "video/3gpp2", MtpConstants.FORMAT_3GP_CONTAINER);
173        addFileType("3GPP2", FILE_TYPE_3GPP2, "video/3gpp2", MtpConstants.FORMAT_3GP_CONTAINER);
174        addFileType("MKV", FILE_TYPE_MKV, "video/x-matroska");
175        addFileType("WEBM", FILE_TYPE_MKV, "video/x-matroska");
176        addFileType("TS", FILE_TYPE_MP2TS, "video/mp2ts");
177
178        addFileType("WMV", FILE_TYPE_WMV, "video/x-ms-wmv", MtpConstants.FORMAT_WMV);
179        addFileType("ASF", FILE_TYPE_ASF, "video/x-ms-asf");
180
181        addFileType("JPG", FILE_TYPE_JPEG, "image/jpeg", MtpConstants.FORMAT_EXIF_JPEG);
182        addFileType("JPEG", FILE_TYPE_JPEG, "image/jpeg", MtpConstants.FORMAT_EXIF_JPEG);
183        addFileType("GIF", FILE_TYPE_GIF, "image/gif", MtpConstants.FORMAT_GIF);
184        addFileType("PNG", FILE_TYPE_PNG, "image/png", MtpConstants.FORMAT_PNG);
185        addFileType("BMP", FILE_TYPE_BMP, "image/x-ms-bmp", MtpConstants.FORMAT_BMP);
186        addFileType("WBMP", FILE_TYPE_WBMP, "image/vnd.wap.wbmp");
187
188        addFileType("M3U", FILE_TYPE_M3U, "audio/x-mpegurl", MtpConstants.FORMAT_M3U_PLAYLIST);
189        addFileType("PLS", FILE_TYPE_PLS, "audio/x-scpls", MtpConstants.FORMAT_PLS_PLAYLIST);
190        addFileType("WPL", FILE_TYPE_WPL, "application/vnd.ms-wpl", MtpConstants.FORMAT_WPL_PLAYLIST);
191
192        addFileType("TXT", FILE_TYPE_TEXT, "text/plain", MtpConstants.FORMAT_TEXT);
193        addFileType("HTM", FILE_TYPE_HTML, "text/html", MtpConstants.FORMAT_HTML);
194        addFileType("HTML", FILE_TYPE_HTML, "text/html", MtpConstants.FORMAT_HTML);
195        addFileType("PDF", FILE_TYPE_PDF, "application/pdf");
196        addFileType("DOC", FILE_TYPE_MS_WORD, "application/msword", MtpConstants.FORMAT_MS_WORD_DOCUMENT);
197        addFileType("XLS", FILE_TYPE_MS_EXCEL, "application/vnd.ms-excel", MtpConstants.FORMAT_MS_EXCEL_SPREADSHEET);
198        addFileType("PPT", FILE_TYPE_MS_POWERPOINT, "application/mspowerpoint", MtpConstants.FORMAT_MS_POWERPOINT_PRESENTATION);
199        addFileType("FLAC", FILE_TYPE_FLAC, "audio/flac", MtpConstants.FORMAT_FLAC);
200        addFileType("ZIP", FILE_TYPE_ZIP, "application/zip");
201    }
202
203    public static boolean isAudioFileType(int fileType) {
204        return ((fileType >= FIRST_AUDIO_FILE_TYPE &&
205                fileType <= LAST_AUDIO_FILE_TYPE) ||
206                (fileType >= FIRST_MIDI_FILE_TYPE &&
207                fileType <= LAST_MIDI_FILE_TYPE));
208    }
209
210    public static boolean isVideoFileType(int fileType) {
211        return (fileType >= FIRST_VIDEO_FILE_TYPE &&
212                fileType <= LAST_VIDEO_FILE_TYPE);
213    }
214
215    public static boolean isImageFileType(int fileType) {
216        return (fileType >= FIRST_IMAGE_FILE_TYPE &&
217                fileType <= LAST_IMAGE_FILE_TYPE);
218    }
219
220    public static boolean isPlayListFileType(int fileType) {
221        return (fileType >= FIRST_PLAYLIST_FILE_TYPE &&
222                fileType <= LAST_PLAYLIST_FILE_TYPE);
223    }
224
225    public static MediaFileType getFileType(String path) {
226        int lastDot = path.lastIndexOf(".");
227        if (lastDot < 0)
228            return null;
229        return sFileTypeMap.get(path.substring(lastDot + 1).toUpperCase());
230    }
231
232    public static boolean isMimeTypeMedia(String mimeType) {
233        int fileType = getFileTypeForMimeType(mimeType);
234        return isAudioFileType(fileType) || isVideoFileType(fileType)
235                || isImageFileType(fileType) || isPlayListFileType(fileType);
236    }
237
238    // generates a title based on file name
239    public static String getFileTitle(String path) {
240        // extract file name after last slash
241        int lastSlash = path.lastIndexOf('/');
242        if (lastSlash >= 0) {
243            lastSlash++;
244            if (lastSlash < path.length()) {
245                path = path.substring(lastSlash);
246            }
247        }
248        // truncate the file extension (if any)
249        int lastDot = path.lastIndexOf('.');
250        if (lastDot > 0) {
251            path = path.substring(0, lastDot);
252        }
253        return path;
254    }
255
256    public static int getFileTypeForMimeType(String mimeType) {
257        Integer value = sMimeTypeMap.get(mimeType);
258        return (value == null ? 0 : value.intValue());
259    }
260
261    public static String getMimeTypeForFile(String path) {
262        MediaFileType mediaFileType = getFileType(path);
263        return (mediaFileType == null ? null : mediaFileType.mimeType);
264    }
265
266    public static int getFormatCode(String fileName, String mimeType) {
267        if (mimeType != null) {
268            Integer value = sMimeTypeToFormatMap.get(mimeType);
269            if (value != null) {
270                return value.intValue();
271            }
272        }
273        int lastDot = fileName.lastIndexOf('.');
274        if (lastDot > 0) {
275            String extension = fileName.substring(lastDot + 1);
276            Integer value = sFileTypeToFormatMap.get(extension);
277            if (value != null) {
278                return value.intValue();
279            }
280        }
281        return MtpConstants.FORMAT_UNDEFINED;
282    }
283
284    public static String getMimeTypeForFormatCode(int formatCode) {
285        return sFormatToMimeTypeMap.get(formatCode);
286    }
287}
288