MediaFile.java revision 16dc3073a2f06a77d9873e536f633a4adf575fce 
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    private static final int FIRST_VIDEO_FILE_TYPE = FILE_TYPE_MP4;
70    private static final int LAST_VIDEO_FILE_TYPE = FILE_TYPE_MP2TS;
71
72    // Image file types
73    public static final int FILE_TYPE_JPEG    = 31;
74    public static final int FILE_TYPE_GIF     = 32;
75    public static final int FILE_TYPE_PNG     = 33;
76    public static final int FILE_TYPE_BMP     = 34;
77    public static final int FILE_TYPE_WBMP    = 35;
78    private static final int FIRST_IMAGE_FILE_TYPE = FILE_TYPE_JPEG;
79    private static final int LAST_IMAGE_FILE_TYPE = FILE_TYPE_WBMP;
80
81    // Playlist file types
82    public static final int FILE_TYPE_M3U      = 41;
83    public static final int FILE_TYPE_PLS      = 42;
84    public static final int FILE_TYPE_WPL      = 43;
85    public static final int FILE_TYPE_HTTPLIVE = 44;
86
87    private static final int FIRST_PLAYLIST_FILE_TYPE = FILE_TYPE_M3U;
88    private static final int LAST_PLAYLIST_FILE_TYPE = FILE_TYPE_HTTPLIVE;
89
90    // Drm file types
91    public static final int FILE_TYPE_FL      = 51;
92    private static final int FIRST_DRM_FILE_TYPE = FILE_TYPE_FL;
93    private static final int LAST_DRM_FILE_TYPE = FILE_TYPE_FL;
94
95    // Other popular file types
96    public static final int FILE_TYPE_TEXT          = 100;
97    public static final int FILE_TYPE_HTML          = 101;
98    public static final int FILE_TYPE_PDF           = 102;
99    public static final int FILE_TYPE_XML           = 103;
100    public static final int FILE_TYPE_MS_WORD       = 104;
101    public static final int FILE_TYPE_MS_EXCEL      = 105;
102    public static final int FILE_TYPE_MS_POWERPOINT = 106;
103    public static final int FILE_TYPE_ZIP           = 107;
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        int count = decoders.size();
145        for (int i = 0; i < count; i++) {
146            AudioDecoder decoder = decoders.get(i);
147            if (decoder == AudioDecoder.AUDIO_DECODER_WMA) {
148                return true;
149            }
150        }
151        return false;
152    }
153
154    private static boolean isWMVEnabled() {
155        List<VideoDecoder> decoders = DecoderCapabilities.getVideoDecoders();
156        int count = decoders.size();
157        for (int i = 0; i < count; i++) {
158            VideoDecoder decoder = decoders.get(i);
159            if (decoder == VideoDecoder.VIDEO_DECODER_WMV) {
160                return true;
161            }
162        }
163        return false;
164    }
165
166    static {
167        addFileType("MP3", FILE_TYPE_MP3, "audio/mpeg", MtpConstants.FORMAT_MP3);
168        addFileType("M4A", FILE_TYPE_M4A, "audio/mp4", MtpConstants.FORMAT_MPEG);
169        addFileType("WAV", FILE_TYPE_WAV, "audio/x-wav", MtpConstants.FORMAT_WAV);
170        addFileType("AMR", FILE_TYPE_AMR, "audio/amr");
171        addFileType("AWB", FILE_TYPE_AWB, "audio/amr-wb");
172        if (isWMAEnabled()) {
173            addFileType("WMA", FILE_TYPE_WMA, "audio/x-ms-wma", MtpConstants.FORMAT_WMA);
174        }
175        addFileType("OGG", FILE_TYPE_OGG, "application/ogg", MtpConstants.FORMAT_OGG);
176        addFileType("OGA", FILE_TYPE_OGG, "application/ogg", MtpConstants.FORMAT_OGG);
177        addFileType("AAC", FILE_TYPE_AAC, "audio/aac", MtpConstants.FORMAT_AAC);
178        addFileType("MKA", FILE_TYPE_MKA, "audio/x-matroska");
179
180        addFileType("MID", FILE_TYPE_MID, "audio/midi");
181        addFileType("MIDI", FILE_TYPE_MID, "audio/midi");
182        addFileType("XMF", FILE_TYPE_MID, "audio/midi");
183        addFileType("RTTTL", FILE_TYPE_MID, "audio/midi");
184        addFileType("SMF", FILE_TYPE_SMF, "audio/sp-midi");
185        addFileType("IMY", FILE_TYPE_IMY, "audio/imelody");
186        addFileType("RTX", FILE_TYPE_MID, "audio/midi");
187        addFileType("OTA", FILE_TYPE_MID, "audio/midi");
188
189        addFileType("MPEG", FILE_TYPE_MP4, "video/mpeg", MtpConstants.FORMAT_MPEG);
190        addFileType("MPG", FILE_TYPE_MP4, "video/mpeg", MtpConstants.FORMAT_MPEG);
191        addFileType("MP4", FILE_TYPE_MP4, "video/mp4", MtpConstants.FORMAT_MPEG);
192        addFileType("M4V", FILE_TYPE_M4V, "video/mp4", MtpConstants.FORMAT_MPEG);
193        addFileType("3GP", FILE_TYPE_3GPP, "video/3gpp",  MtpConstants.FORMAT_3GP_CONTAINER);
194        addFileType("3GPP", FILE_TYPE_3GPP, "video/3gpp", MtpConstants.FORMAT_3GP_CONTAINER);
195        addFileType("3G2", FILE_TYPE_3GPP2, "video/3gpp2", MtpConstants.FORMAT_3GP_CONTAINER);
196        addFileType("3GPP2", FILE_TYPE_3GPP2, "video/3gpp2", MtpConstants.FORMAT_3GP_CONTAINER);
197        addFileType("MKV", FILE_TYPE_MKV, "video/x-matroska");
198        addFileType("WEBM", FILE_TYPE_MKV, "video/x-matroska");
199        addFileType("TS", FILE_TYPE_MP2TS, "video/mp2ts");
200
201        if (isWMVEnabled()) {
202            addFileType("WMV", FILE_TYPE_WMV, "video/x-ms-wmv", MtpConstants.FORMAT_WMV);
203            addFileType("ASF", FILE_TYPE_ASF, "video/x-ms-asf");
204        }
205
206        addFileType("JPG", FILE_TYPE_JPEG, "image/jpeg", MtpConstants.FORMAT_EXIF_JPEG);
207        addFileType("JPEG", FILE_TYPE_JPEG, "image/jpeg", MtpConstants.FORMAT_EXIF_JPEG);
208        addFileType("GIF", FILE_TYPE_GIF, "image/gif", MtpConstants.FORMAT_GIF);
209        addFileType("PNG", FILE_TYPE_PNG, "image/png", MtpConstants.FORMAT_PNG);
210        addFileType("BMP", FILE_TYPE_BMP, "image/x-ms-bmp", MtpConstants.FORMAT_BMP);
211        addFileType("WBMP", FILE_TYPE_WBMP, "image/vnd.wap.wbmp");
212
213        addFileType("M3U", FILE_TYPE_M3U, "audio/x-mpegurl", MtpConstants.FORMAT_M3U_PLAYLIST);
214        addFileType("M3U", FILE_TYPE_M3U, "application/x-mpegurl", MtpConstants.FORMAT_M3U_PLAYLIST);
215        addFileType("PLS", FILE_TYPE_PLS, "audio/x-scpls", MtpConstants.FORMAT_PLS_PLAYLIST);
216        addFileType("WPL", FILE_TYPE_WPL, "application/vnd.ms-wpl", MtpConstants.FORMAT_WPL_PLAYLIST);
217        addFileType("M3U8", FILE_TYPE_HTTPLIVE, "application/vnd.apple.mpegurl");
218        addFileType("M3U8", FILE_TYPE_HTTPLIVE, "audio/mpegurl");
219        addFileType("M3U8", FILE_TYPE_HTTPLIVE, "audio/x-mpegurl");
220
221        addFileType("FL", FILE_TYPE_FL, "application/x-android-drm-fl");
222
223        addFileType("TXT", FILE_TYPE_TEXT, "text/plain", MtpConstants.FORMAT_TEXT);
224        addFileType("HTM", FILE_TYPE_HTML, "text/html", MtpConstants.FORMAT_HTML);
225        addFileType("HTML", FILE_TYPE_HTML, "text/html", MtpConstants.FORMAT_HTML);
226        addFileType("PDF", FILE_TYPE_PDF, "application/pdf");
227        addFileType("DOC", FILE_TYPE_MS_WORD, "application/msword", MtpConstants.FORMAT_MS_WORD_DOCUMENT);
228        addFileType("XLS", FILE_TYPE_MS_EXCEL, "application/vnd.ms-excel", MtpConstants.FORMAT_MS_EXCEL_SPREADSHEET);
229        addFileType("PPT", FILE_TYPE_MS_POWERPOINT, "application/mspowerpoint", MtpConstants.FORMAT_MS_POWERPOINT_PRESENTATION);
230        addFileType("FLAC", FILE_TYPE_FLAC, "audio/flac", MtpConstants.FORMAT_FLAC);
231        addFileType("ZIP", FILE_TYPE_ZIP, "application/zip");
232    }
233
234    public static boolean isAudioFileType(int fileType) {
235        return ((fileType >= FIRST_AUDIO_FILE_TYPE &&
236                fileType <= LAST_AUDIO_FILE_TYPE) ||
237                (fileType >= FIRST_MIDI_FILE_TYPE &&
238                fileType <= LAST_MIDI_FILE_TYPE));
239    }
240
241    public static boolean isVideoFileType(int fileType) {
242        return (fileType >= FIRST_VIDEO_FILE_TYPE &&
243                fileType <= LAST_VIDEO_FILE_TYPE);
244    }
245
246    public static boolean isImageFileType(int fileType) {
247        return (fileType >= FIRST_IMAGE_FILE_TYPE &&
248                fileType <= LAST_IMAGE_FILE_TYPE);
249    }
250
251    public static boolean isPlayListFileType(int fileType) {
252        return (fileType >= FIRST_PLAYLIST_FILE_TYPE &&
253                fileType <= LAST_PLAYLIST_FILE_TYPE);
254    }
255
256    public static boolean isDrmFileType(int fileType) {
257        return (fileType >= FIRST_DRM_FILE_TYPE &&
258                fileType <= LAST_DRM_FILE_TYPE);
259    }
260
261    public static MediaFileType getFileType(String path) {
262        int lastDot = path.lastIndexOf(".");
263        if (lastDot < 0)
264            return null;
265        return sFileTypeMap.get(path.substring(lastDot + 1).toUpperCase());
266    }
267
268    public static boolean isMimeTypeMedia(String mimeType) {
269        int fileType = getFileTypeForMimeType(mimeType);
270        return isAudioFileType(fileType) || isVideoFileType(fileType)
271                || isImageFileType(fileType) || isPlayListFileType(fileType);
272    }
273
274    // generates a title based on file name
275    public static String getFileTitle(String path) {
276        // extract file name after last slash
277        int lastSlash = path.lastIndexOf('/');
278        if (lastSlash >= 0) {
279            lastSlash++;
280            if (lastSlash < path.length()) {
281                path = path.substring(lastSlash);
282            }
283        }
284        // truncate the file extension (if any)
285        int lastDot = path.lastIndexOf('.');
286        if (lastDot > 0) {
287            path = path.substring(0, lastDot);
288        }
289        return path;
290    }
291
292    public static int getFileTypeForMimeType(String mimeType) {
293        Integer value = sMimeTypeMap.get(mimeType);
294        return (value == null ? 0 : value.intValue());
295    }
296
297    public static String getMimeTypeForFile(String path) {
298        MediaFileType mediaFileType = getFileType(path);
299        return (mediaFileType == null ? null : mediaFileType.mimeType);
300    }
301
302    public static int getFormatCode(String fileName, String mimeType) {
303        if (mimeType != null) {
304            Integer value = sMimeTypeToFormatMap.get(mimeType);
305            if (value != null) {
306                return value.intValue();
307            }
308        }
309        int lastDot = fileName.lastIndexOf('.');
310        if (lastDot > 0) {
311            String extension = fileName.substring(lastDot + 1);
312            Integer value = sFileTypeToFormatMap.get(extension);
313            if (value != null) {
314                return value.intValue();
315            }
316        }
317        return MtpConstants.FORMAT_UNDEFINED;
318    }
319
320    public static String getMimeTypeForFormatCode(int formatCode) {
321        return sFormatToMimeTypeMap.get(formatCode);
322    }
323}
324