MediaFile.java revision 0cd0136d440cf6ad9d5fab430269116786e671ec 
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    private static final int FIRST_AUDIO_FILE_TYPE = FILE_TYPE_MP3;
50    private static final int LAST_AUDIO_FILE_TYPE = FILE_TYPE_MKA;
51
52    // MIDI file types
53    public static final int FILE_TYPE_MID     = 11;
54    public static final int FILE_TYPE_SMF     = 12;
55    public static final int FILE_TYPE_IMY     = 13;
56    private static final int FIRST_MIDI_FILE_TYPE = FILE_TYPE_MID;
57    private static final int LAST_MIDI_FILE_TYPE = FILE_TYPE_IMY;
58
59    // Video file types
60    public static final int FILE_TYPE_MP4     = 21;
61    public static final int FILE_TYPE_M4V     = 22;
62    public static final int FILE_TYPE_3GPP    = 23;
63    public static final int FILE_TYPE_3GPP2   = 24;
64    public static final int FILE_TYPE_WMV     = 25;
65    public static final int FILE_TYPE_ASF     = 26;
66    public static final int FILE_TYPE_MKV     = 27;
67    public static final int FILE_TYPE_MP2TS   = 28;
68    private static final int FIRST_VIDEO_FILE_TYPE = FILE_TYPE_MP4;
69    private static final int LAST_VIDEO_FILE_TYPE = FILE_TYPE_MP2TS;
70
71    // Image file types
72    public static final int FILE_TYPE_JPEG    = 31;
73    public static final int FILE_TYPE_GIF     = 32;
74    public static final int FILE_TYPE_PNG     = 33;
75    public static final int FILE_TYPE_BMP     = 34;
76    public static final int FILE_TYPE_WBMP    = 35;
77    private static final int FIRST_IMAGE_FILE_TYPE = FILE_TYPE_JPEG;
78    private static final int LAST_IMAGE_FILE_TYPE = FILE_TYPE_WBMP;
79
80    // Playlist file types
81    public static final int FILE_TYPE_M3U      = 41;
82    public static final int FILE_TYPE_PLS      = 42;
83    public static final int FILE_TYPE_WPL      = 43;
84    public static final int FILE_TYPE_HTTPLIVE = 44;
85
86    private static final int FIRST_PLAYLIST_FILE_TYPE = FILE_TYPE_M3U;
87    private static final int LAST_PLAYLIST_FILE_TYPE = FILE_TYPE_HTTPLIVE;
88
89    // Drm file types
90    public static final int FILE_TYPE_FL      = 51;
91    private static final int FIRST_DRM_FILE_TYPE = FILE_TYPE_FL;
92    private static final int LAST_DRM_FILE_TYPE = FILE_TYPE_FL;
93
94    // Other popular file types
95    public static final int FILE_TYPE_TEXT          = 100;
96    public static final int FILE_TYPE_HTML          = 101;
97    public static final int FILE_TYPE_PDF           = 102;
98    public static final int FILE_TYPE_XML           = 103;
99    public static final int FILE_TYPE_MS_WORD       = 104;
100    public static final int FILE_TYPE_MS_EXCEL      = 105;
101    public static final int FILE_TYPE_MS_POWERPOINT = 106;
102    public static final int FILE_TYPE_FLAC          = 107;
103    public static final int FILE_TYPE_ZIP           = 108;
104
105    static class MediaFileType {
106
107        int fileType;
108        String mimeType;
109
110        MediaFileType(int fileType, String mimeType) {
111            this.fileType = fileType;
112            this.mimeType = mimeType;
113        }
114    }
115
116    private static HashMap<String, MediaFileType> sFileTypeMap
117            = new HashMap<String, MediaFileType>();
118    private static HashMap<String, Integer> sMimeTypeMap
119            = new HashMap<String, Integer>();
120    // maps file extension to MTP format code
121    private static HashMap<String, Integer> sFileTypeToFormatMap
122            = new HashMap<String, Integer>();
123    // maps mime type to MTP format code
124    private static HashMap<String, Integer> sMimeTypeToFormatMap
125            = new HashMap<String, Integer>();
126    // maps MTP format code to mime type
127    private static HashMap<Integer, String> sFormatToMimeTypeMap
128            = new HashMap<Integer, String>();
129
130    static void addFileType(String extension, int fileType, String mimeType) {
131        sFileTypeMap.put(extension, new MediaFileType(fileType, mimeType));
132        sMimeTypeMap.put(mimeType, Integer.valueOf(fileType));
133    }
134
135    static void addFileType(String extension, int fileType, String mimeType, int mtpFormatCode) {
136        addFileType(extension, fileType, mimeType);
137        sFileTypeToFormatMap.put(extension, Integer.valueOf(mtpFormatCode));
138        sMimeTypeToFormatMap.put(mimeType, Integer.valueOf(mtpFormatCode));
139        sFormatToMimeTypeMap.put(mtpFormatCode, mimeType);
140    }
141
142    private static boolean isWMAEnabled() {
143        List<AudioDecoder> decoders = DecoderCapabilities.getAudioDecoders();
144        for (AudioDecoder decoder: decoders) {
145            if (decoder == AudioDecoder.AUDIO_DECODER_WMA) {
146                return true;
147            }
148        }
149        return false;
150    }
151
152    static {
153        addFileType("MP3", FILE_TYPE_MP3, "audio/mpeg", MtpConstants.FORMAT_MP3);
154        addFileType("M4A", FILE_TYPE_M4A, "audio/mp4", MtpConstants.FORMAT_MPEG);
155        addFileType("WAV", FILE_TYPE_WAV, "audio/x-wav", MtpConstants.FORMAT_WAV);
156        addFileType("AMR", FILE_TYPE_AMR, "audio/amr");
157        addFileType("AWB", FILE_TYPE_AWB, "audio/amr-wb");
158        if (isWMAEnabled()) {
159            addFileType("WMA", FILE_TYPE_WMA, "audio/x-ms-wma", MtpConstants.FORMAT_WMA);
160        }
161        addFileType("OGG", FILE_TYPE_OGG, "application/ogg", MtpConstants.FORMAT_OGG);
162        addFileType("OGA", FILE_TYPE_OGG, "application/ogg", MtpConstants.FORMAT_OGG);
163        addFileType("AAC", FILE_TYPE_AAC, "audio/aac", MtpConstants.FORMAT_AAC);
164        addFileType("MKA", FILE_TYPE_MKA, "audio/x-matroska");
165
166        addFileType("MID", FILE_TYPE_MID, "audio/midi");
167        addFileType("MIDI", FILE_TYPE_MID, "audio/midi");
168        addFileType("XMF", FILE_TYPE_MID, "audio/midi");
169        addFileType("RTTTL", FILE_TYPE_MID, "audio/midi");
170        addFileType("SMF", FILE_TYPE_SMF, "audio/sp-midi");
171        addFileType("IMY", FILE_TYPE_IMY, "audio/imelody");
172        addFileType("RTX", FILE_TYPE_MID, "audio/midi");
173        addFileType("OTA", FILE_TYPE_MID, "audio/midi");
174
175        addFileType("MPEG", FILE_TYPE_MP4, "video/mpeg", MtpConstants.FORMAT_MPEG);
176        addFileType("MPG", FILE_TYPE_MP4, "video/mpeg", MtpConstants.FORMAT_MPEG);
177        addFileType("MP4", FILE_TYPE_MP4, "video/mp4", MtpConstants.FORMAT_MPEG);
178        addFileType("M4V", FILE_TYPE_M4V, "video/mp4", MtpConstants.FORMAT_MPEG);
179        addFileType("3GP", FILE_TYPE_3GPP, "video/3gpp",  MtpConstants.FORMAT_3GP_CONTAINER);
180        addFileType("3GPP", FILE_TYPE_3GPP, "video/3gpp", MtpConstants.FORMAT_3GP_CONTAINER);
181        addFileType("3G2", FILE_TYPE_3GPP2, "video/3gpp2", MtpConstants.FORMAT_3GP_CONTAINER);
182        addFileType("3GPP2", FILE_TYPE_3GPP2, "video/3gpp2", MtpConstants.FORMAT_3GP_CONTAINER);
183        addFileType("MKV", FILE_TYPE_MKV, "video/x-matroska");
184        addFileType("WEBM", FILE_TYPE_MKV, "video/x-matroska");
185        addFileType("TS", FILE_TYPE_MP2TS, "video/mp2ts");
186
187        addFileType("WMV", FILE_TYPE_WMV, "video/x-ms-wmv", MtpConstants.FORMAT_WMV);
188        addFileType("ASF", FILE_TYPE_ASF, "video/x-ms-asf");
189
190        addFileType("JPG", FILE_TYPE_JPEG, "image/jpeg", MtpConstants.FORMAT_EXIF_JPEG);
191        addFileType("JPEG", FILE_TYPE_JPEG, "image/jpeg", MtpConstants.FORMAT_EXIF_JPEG);
192        addFileType("GIF", FILE_TYPE_GIF, "image/gif", MtpConstants.FORMAT_GIF);
193        addFileType("PNG", FILE_TYPE_PNG, "image/png", MtpConstants.FORMAT_PNG);
194        addFileType("BMP", FILE_TYPE_BMP, "image/x-ms-bmp", MtpConstants.FORMAT_BMP);
195        addFileType("WBMP", FILE_TYPE_WBMP, "image/vnd.wap.wbmp");
196
197        addFileType("M3U", FILE_TYPE_M3U, "audio/x-mpegurl", MtpConstants.FORMAT_M3U_PLAYLIST);
198        addFileType("M3U", FILE_TYPE_M3U, "application/x-mpegurl", MtpConstants.FORMAT_M3U_PLAYLIST);
199        addFileType("PLS", FILE_TYPE_PLS, "audio/x-scpls", MtpConstants.FORMAT_PLS_PLAYLIST);
200        addFileType("WPL", FILE_TYPE_WPL, "application/vnd.ms-wpl", MtpConstants.FORMAT_WPL_PLAYLIST);
201        addFileType("M3U8", FILE_TYPE_HTTPLIVE, "application/vnd.apple.mpegurl");
202        addFileType("M3U8", FILE_TYPE_HTTPLIVE, "audio/mpegurl");
203        addFileType("M3U8", FILE_TYPE_HTTPLIVE, "audio/x-mpegurl");
204
205        addFileType("FL", FILE_TYPE_FL, "application/x-android-drm-fl");
206
207        addFileType("TXT", FILE_TYPE_TEXT, "text/plain", MtpConstants.FORMAT_TEXT);
208        addFileType("HTM", FILE_TYPE_HTML, "text/html", MtpConstants.FORMAT_HTML);
209        addFileType("HTML", FILE_TYPE_HTML, "text/html", MtpConstants.FORMAT_HTML);
210        addFileType("PDF", FILE_TYPE_PDF, "application/pdf");
211        addFileType("DOC", FILE_TYPE_MS_WORD, "application/msword", MtpConstants.FORMAT_MS_WORD_DOCUMENT);
212        addFileType("XLS", FILE_TYPE_MS_EXCEL, "application/vnd.ms-excel", MtpConstants.FORMAT_MS_EXCEL_SPREADSHEET);
213        addFileType("PPT", FILE_TYPE_MS_POWERPOINT, "application/mspowerpoint", MtpConstants.FORMAT_MS_POWERPOINT_PRESENTATION);
214        addFileType("FLAC", FILE_TYPE_FLAC, "audio/flac", MtpConstants.FORMAT_FLAC);
215        addFileType("ZIP", FILE_TYPE_ZIP, "application/zip");
216    }
217
218    public static boolean isAudioFileType(int fileType) {
219        return ((fileType >= FIRST_AUDIO_FILE_TYPE &&
220                fileType <= LAST_AUDIO_FILE_TYPE) ||
221                (fileType >= FIRST_MIDI_FILE_TYPE &&
222                fileType <= LAST_MIDI_FILE_TYPE));
223    }
224
225    public static boolean isVideoFileType(int fileType) {
226        return (fileType >= FIRST_VIDEO_FILE_TYPE &&
227                fileType <= LAST_VIDEO_FILE_TYPE);
228    }
229
230    public static boolean isImageFileType(int fileType) {
231        return (fileType >= FIRST_IMAGE_FILE_TYPE &&
232                fileType <= LAST_IMAGE_FILE_TYPE);
233    }
234
235    public static boolean isPlayListFileType(int fileType) {
236        return (fileType >= FIRST_PLAYLIST_FILE_TYPE &&
237                fileType <= LAST_PLAYLIST_FILE_TYPE);
238    }
239
240    public static boolean isDrmFileType(int fileType) {
241        return (fileType >= FIRST_DRM_FILE_TYPE &&
242                fileType <= LAST_DRM_FILE_TYPE);
243    }
244
245    public static MediaFileType getFileType(String path) {
246        int lastDot = path.lastIndexOf(".");
247        if (lastDot < 0)
248            return null;
249        return sFileTypeMap.get(path.substring(lastDot + 1).toUpperCase());
250    }
251
252    public static boolean isMimeTypeMedia(String mimeType) {
253        int fileType = getFileTypeForMimeType(mimeType);
254        return isAudioFileType(fileType) || isVideoFileType(fileType)
255                || isImageFileType(fileType) || isPlayListFileType(fileType);
256    }
257
258    // generates a title based on file name
259    public static String getFileTitle(String path) {
260        // extract file name after last slash
261        int lastSlash = path.lastIndexOf('/');
262        if (lastSlash >= 0) {
263            lastSlash++;
264            if (lastSlash < path.length()) {
265                path = path.substring(lastSlash);
266            }
267        }
268        // truncate the file extension (if any)
269        int lastDot = path.lastIndexOf('.');
270        if (lastDot > 0) {
271            path = path.substring(0, lastDot);
272        }
273        return path;
274    }
275
276    public static int getFileTypeForMimeType(String mimeType) {
277        Integer value = sMimeTypeMap.get(mimeType);
278        return (value == null ? 0 : value.intValue());
279    }
280
281    public static String getMimeTypeForFile(String path) {
282        MediaFileType mediaFileType = getFileType(path);
283        return (mediaFileType == null ? null : mediaFileType.mimeType);
284    }
285
286    public static int getFormatCode(String fileName, String mimeType) {
287        if (mimeType != null) {
288            Integer value = sMimeTypeToFormatMap.get(mimeType);
289            if (value != null) {
290                return value.intValue();
291            }
292        }
293        int lastDot = fileName.lastIndexOf('.');
294        if (lastDot > 0) {
295            String extension = fileName.substring(lastDot + 1);
296            Integer value = sFileTypeToFormatMap.get(extension);
297            if (value != null) {
298                return value.intValue();
299            }
300        }
301        return MtpConstants.FORMAT_UNDEFINED;
302    }
303
304    public static String getMimeTypeForFormatCode(int formatCode) {
305        return sFormatToMimeTypeMap.get(formatCode);
306    }
307}
308