MediaFile.java revision c37255d5d0fd9e0ec02b0d7cb5c4b235e200d367 
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    static class MediaFileType {
87
88        int fileType;
89        String mimeType;
90
91        MediaFileType(int fileType, String mimeType) {
92            this.fileType = fileType;
93            this.mimeType = mimeType;
94        }
95    }
96
97    private static HashMap<String, MediaFileType> sFileTypeMap
98            = new HashMap<String, MediaFileType>();
99    private static HashMap<String, Integer> sMimeTypeMap
100            = new HashMap<String, Integer>();
101    // maps file extension to MTP format code
102    private static HashMap<String, Integer> sFileTypeToFormatMap
103            = new HashMap<String, Integer>();
104    // maps mime type to MTP format code
105    private static HashMap<String, Integer> sMimeTypeToFormatMap
106            = new HashMap<String, Integer>();
107    // maps MTP format code to mime type
108    private static HashMap<Integer, String> sFormatToMimeTypeMap
109            = new HashMap<Integer, String>();
110
111    static void addFileType(String extension, int fileType, String mimeType) {
112        sFileTypeMap.put(extension, new MediaFileType(fileType, mimeType));
113        sMimeTypeMap.put(mimeType, Integer.valueOf(fileType));
114    }
115
116    static void addFileType(String extension, int fileType, String mimeType, int mtpFormatCode) {
117        addFileType(extension, fileType, mimeType);
118        sFileTypeToFormatMap.put(extension, Integer.valueOf(mtpFormatCode));
119        sMimeTypeToFormatMap.put(mimeType, Integer.valueOf(mtpFormatCode));
120        sFormatToMimeTypeMap.put(mtpFormatCode, mimeType);
121    }
122
123    private static boolean isWMAEnabled() {
124        List<AudioDecoder> decoders = DecoderCapabilities.getAudioDecoders();
125        for (AudioDecoder decoder: decoders) {
126            if (decoder == AudioDecoder.AUDIO_DECODER_WMA) {
127                return true;
128            }
129        }
130        return false;
131    }
132
133    private static boolean isWMVEnabled() {
134        List<VideoDecoder> decoders = DecoderCapabilities.getVideoDecoders();
135        for (VideoDecoder decoder: decoders) {
136            if (decoder == VideoDecoder.VIDEO_DECODER_WMV) {
137                return true;
138            }
139        }
140        return false;
141    }
142
143    static {
144        addFileType("MP3", FILE_TYPE_MP3, "audio/mpeg", MtpConstants.FORMAT_MP3);
145        addFileType("M4A", FILE_TYPE_M4A, "audio/mp4", MtpConstants.FORMAT_MPEG);
146        addFileType("WAV", FILE_TYPE_WAV, "audio/x-wav", MtpConstants.FORMAT_WAV);
147        addFileType("AMR", FILE_TYPE_AMR, "audio/amr");
148        addFileType("AWB", FILE_TYPE_AWB, "audio/amr-wb");
149        if (isWMAEnabled()) {
150            addFileType("WMA", FILE_TYPE_WMA, "audio/x-ms-wma", MtpConstants.FORMAT_WMA);
151        }
152        addFileType("OGG", FILE_TYPE_OGG, "application/ogg", MtpConstants.FORMAT_OGG);
153        addFileType("OGA", FILE_TYPE_OGG, "application/ogg", MtpConstants.FORMAT_OGG);
154        addFileType("AAC", FILE_TYPE_AAC, "audio/aac", MtpConstants.FORMAT_AAC);
155        addFileType("MKA", FILE_TYPE_MKA, "audio/x-matroska");
156
157        addFileType("MID", FILE_TYPE_MID, "audio/midi");
158        addFileType("MIDI", FILE_TYPE_MID, "audio/midi");
159        addFileType("XMF", FILE_TYPE_MID, "audio/midi");
160        addFileType("RTTTL", FILE_TYPE_MID, "audio/midi");
161        addFileType("SMF", FILE_TYPE_SMF, "audio/sp-midi");
162        addFileType("IMY", FILE_TYPE_IMY, "audio/imelody");
163        addFileType("RTX", FILE_TYPE_MID, "audio/midi");
164        addFileType("OTA", FILE_TYPE_MID, "audio/midi");
165
166        addFileType("MPEG", FILE_TYPE_MP4, "video/mpeg", MtpConstants.FORMAT_MPEG);
167        addFileType("MP4", FILE_TYPE_MP4, "video/mp4", MtpConstants.FORMAT_MPEG);
168        addFileType("M4V", FILE_TYPE_M4V, "video/mp4", MtpConstants.FORMAT_MPEG);
169        addFileType("3GP", FILE_TYPE_3GPP, "video/3gpp",  MtpConstants.FORMAT_3GP_CONTAINER);
170        addFileType("3GPP", FILE_TYPE_3GPP, "video/3gpp", MtpConstants.FORMAT_3GP_CONTAINER);
171        addFileType("3G2", FILE_TYPE_3GPP2, "video/3gpp2", MtpConstants.FORMAT_3GP_CONTAINER);
172        addFileType("3GPP2", FILE_TYPE_3GPP2, "video/3gpp2", MtpConstants.FORMAT_3GP_CONTAINER);
173        addFileType("MKV", FILE_TYPE_MKV, "video/x-matroska");
174        addFileType("WEBM", FILE_TYPE_MKV, "video/x-matroska");
175        addFileType("TS", FILE_TYPE_MP2TS, "video/mp2ts");
176
177        if (isWMVEnabled()) {
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
182        addFileType("JPG", FILE_TYPE_JPEG, "image/jpeg", MtpConstants.FORMAT_EXIF_JPEG);
183        addFileType("JPEG", FILE_TYPE_JPEG, "image/jpeg", MtpConstants.FORMAT_EXIF_JPEG);
184        addFileType("GIF", FILE_TYPE_GIF, "image/gif", MtpConstants.FORMAT_GIF);
185        addFileType("PNG", FILE_TYPE_PNG, "image/png", MtpConstants.FORMAT_PNG);
186        addFileType("BMP", FILE_TYPE_BMP, "image/x-ms-bmp", MtpConstants.FORMAT_BMP);
187        addFileType("WBMP", FILE_TYPE_WBMP, "image/vnd.wap.wbmp");
188
189        addFileType("M3U", FILE_TYPE_M3U, "audio/x-mpegurl", MtpConstants.FORMAT_M3U_PLAYLIST);
190        addFileType("PLS", FILE_TYPE_PLS, "audio/x-scpls", MtpConstants.FORMAT_PLS_PLAYLIST);
191        addFileType("WPL", FILE_TYPE_WPL, "application/vnd.ms-wpl", MtpConstants.FORMAT_WPL_PLAYLIST);
192    }
193
194    public static boolean isAudioFileType(int fileType) {
195        return ((fileType >= FIRST_AUDIO_FILE_TYPE &&
196                fileType <= LAST_AUDIO_FILE_TYPE) ||
197                (fileType >= FIRST_MIDI_FILE_TYPE &&
198                fileType <= LAST_MIDI_FILE_TYPE));
199    }
200
201    public static boolean isVideoFileType(int fileType) {
202        return (fileType >= FIRST_VIDEO_FILE_TYPE &&
203                fileType <= LAST_VIDEO_FILE_TYPE);
204    }
205
206    public static boolean isImageFileType(int fileType) {
207        return (fileType >= FIRST_IMAGE_FILE_TYPE &&
208                fileType <= LAST_IMAGE_FILE_TYPE);
209    }
210
211    public static boolean isPlayListFileType(int fileType) {
212        return (fileType >= FIRST_PLAYLIST_FILE_TYPE &&
213                fileType <= LAST_PLAYLIST_FILE_TYPE);
214    }
215
216    public static MediaFileType getFileType(String path) {
217        int lastDot = path.lastIndexOf(".");
218        if (lastDot < 0)
219            return null;
220        return sFileTypeMap.get(path.substring(lastDot + 1).toUpperCase());
221    }
222
223    // generates a title based on file name
224    public static String getFileTitle(String path) {
225        // extract file name after last slash
226        int lastSlash = path.lastIndexOf('/');
227        if (lastSlash >= 0) {
228            lastSlash++;
229            if (lastSlash < path.length()) {
230                path = path.substring(lastSlash);
231            }
232        }
233        // truncate the file extension (if any)
234        int lastDot = path.lastIndexOf('.');
235        if (lastDot > 0) {
236            path = path.substring(0, lastDot);
237        }
238        return path;
239    }
240
241    public static int getFileTypeForMimeType(String mimeType) {
242        Integer value = sMimeTypeMap.get(mimeType);
243        return (value == null ? 0 : value.intValue());
244    }
245
246    public static String getMimeTypeForFile(String path) {
247        MediaFileType mediaFileType = getFileType(path);
248        return (mediaFileType == null ? null : mediaFileType.mimeType);
249    }
250
251    public static int getFormatCode(String fileName, String mimeType) {
252        if (mimeType != null) {
253            Integer value = sMimeTypeToFormatMap.get(mimeType);
254            if (value != null) {
255                return value.intValue();
256            }
257        }
258        int lastDot = fileName.lastIndexOf('.');
259        if (lastDot > 0) {
260            String extension = fileName.substring(lastDot + 1);
261            Integer value = sFileTypeToFormatMap.get(extension);
262            if (value != null) {
263                return value.intValue();
264            }
265        }
266        return MtpConstants.FORMAT_UNDEFINED;
267    }
268
269    public static String getMimeTypeForFormatCode(int formatCode) {
270        return sFormatToMimeTypeMap.get(formatCode);
271    }
272}
273