1/*
2 * Copyright (C) 2009 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
17//#define LOG_NDEBUG 0
18#define LOG_TAG "StagefrightMediaScanner"
19#include <utils/Log.h>
20
21#include <sys/types.h>
22#include <sys/stat.h>
23#include <fcntl.h>
24
25#include <media/stagefright/StagefrightMediaScanner.h>
26
27#include <media/IMediaHTTPService.h>
28#include <media/mediametadataretriever.h>
29#include <private/media/VideoFrame.h>
30
31// Sonivox includes
32#include <libsonivox/eas.h>
33
34namespace android {
35
36StagefrightMediaScanner::StagefrightMediaScanner() {}
37
38StagefrightMediaScanner::~StagefrightMediaScanner() {}
39
40static bool FileHasAcceptableExtension(const char *extension) {
41    static const char *kValidExtensions[] = {
42        ".mp3", ".mp4", ".m4a", ".3gp", ".3gpp", ".3g2", ".3gpp2",
43        ".mpeg", ".ogg", ".mid", ".smf", ".imy", ".wma", ".aac",
44        ".wav", ".amr", ".midi", ".xmf", ".rtttl", ".rtx", ".ota",
45        ".mkv", ".mka", ".webm", ".ts", ".fl", ".flac", ".mxmf",
46        ".avi", ".mpeg", ".mpg", ".awb", ".mpga"
47    };
48    static const size_t kNumValidExtensions =
49        sizeof(kValidExtensions) / sizeof(kValidExtensions[0]);
50
51    for (size_t i = 0; i < kNumValidExtensions; ++i) {
52        if (!strcasecmp(extension, kValidExtensions[i])) {
53            return true;
54        }
55    }
56
57    return false;
58}
59
60static MediaScanResult HandleMIDI(
61        const char *filename, MediaScannerClient *client) {
62    // get the library configuration and do sanity check
63    const S_EAS_LIB_CONFIG* pLibConfig = EAS_Config();
64    if ((pLibConfig == NULL) || (LIB_VERSION != pLibConfig->libVersion)) {
65        ALOGE("EAS library/header mismatch\n");
66        return MEDIA_SCAN_RESULT_ERROR;
67    }
68    EAS_I32 temp;
69
70    // spin up a new EAS engine
71    EAS_DATA_HANDLE easData = NULL;
72    EAS_HANDLE easHandle = NULL;
73    EAS_RESULT result = EAS_Init(&easData);
74    if (result == EAS_SUCCESS) {
75        EAS_FILE file;
76        file.path = filename;
77        file.fd = 0;
78        file.offset = 0;
79        file.length = 0;
80        result = EAS_OpenFile(easData, &file, &easHandle);
81    }
82    if (result == EAS_SUCCESS) {
83        result = EAS_Prepare(easData, easHandle);
84    }
85    if (result == EAS_SUCCESS) {
86        result = EAS_ParseMetaData(easData, easHandle, &temp);
87    }
88    if (easHandle) {
89        EAS_CloseFile(easData, easHandle);
90    }
91    if (easData) {
92        EAS_Shutdown(easData);
93    }
94
95    if (result != EAS_SUCCESS) {
96        return MEDIA_SCAN_RESULT_SKIPPED;
97    }
98
99    char buffer[20];
100    sprintf(buffer, "%ld", temp);
101    status_t status = client->addStringTag("duration", buffer);
102    if (status != OK) {
103        return MEDIA_SCAN_RESULT_ERROR;
104    }
105    return MEDIA_SCAN_RESULT_OK;
106}
107
108MediaScanResult StagefrightMediaScanner::processFile(
109        const char *path, const char *mimeType,
110        MediaScannerClient &client) {
111    ALOGV("processFile '%s'.", path);
112
113    client.setLocale(locale());
114    client.beginFile();
115    MediaScanResult result = processFileInternal(path, mimeType, client);
116    client.endFile();
117    return result;
118}
119
120MediaScanResult StagefrightMediaScanner::processFileInternal(
121        const char *path, const char * /* mimeType */,
122        MediaScannerClient &client) {
123    const char *extension = strrchr(path, '.');
124
125    if (!extension) {
126        return MEDIA_SCAN_RESULT_SKIPPED;
127    }
128
129    if (!FileHasAcceptableExtension(extension)) {
130        return MEDIA_SCAN_RESULT_SKIPPED;
131    }
132
133    if (!strcasecmp(extension, ".mid")
134            || !strcasecmp(extension, ".smf")
135            || !strcasecmp(extension, ".imy")
136            || !strcasecmp(extension, ".midi")
137            || !strcasecmp(extension, ".xmf")
138            || !strcasecmp(extension, ".rtttl")
139            || !strcasecmp(extension, ".rtx")
140            || !strcasecmp(extension, ".ota")
141            || !strcasecmp(extension, ".mxmf")) {
142        return HandleMIDI(path, &client);
143    }
144
145    sp<MediaMetadataRetriever> mRetriever(new MediaMetadataRetriever);
146
147    int fd = open(path, O_RDONLY | O_LARGEFILE);
148    status_t status;
149    if (fd < 0) {
150        // couldn't open it locally, maybe the media server can?
151        status = mRetriever->setDataSource(NULL /* httpService */, path);
152    } else {
153        status = mRetriever->setDataSource(fd, 0, 0x7ffffffffffffffL);
154        close(fd);
155    }
156
157    if (status) {
158        return MEDIA_SCAN_RESULT_ERROR;
159    }
160
161    const char *value;
162    if ((value = mRetriever->extractMetadata(
163                    METADATA_KEY_MIMETYPE)) != NULL) {
164        status = client.setMimeType(value);
165        if (status) {
166            return MEDIA_SCAN_RESULT_ERROR;
167        }
168    }
169
170    struct KeyMap {
171        const char *tag;
172        int key;
173    };
174    static const KeyMap kKeyMap[] = {
175        { "tracknumber", METADATA_KEY_CD_TRACK_NUMBER },
176        { "discnumber", METADATA_KEY_DISC_NUMBER },
177        { "album", METADATA_KEY_ALBUM },
178        { "artist", METADATA_KEY_ARTIST },
179        { "albumartist", METADATA_KEY_ALBUMARTIST },
180        { "composer", METADATA_KEY_COMPOSER },
181        { "genre", METADATA_KEY_GENRE },
182        { "title", METADATA_KEY_TITLE },
183        { "year", METADATA_KEY_YEAR },
184        { "duration", METADATA_KEY_DURATION },
185        { "writer", METADATA_KEY_WRITER },
186        { "compilation", METADATA_KEY_COMPILATION },
187        { "isdrm", METADATA_KEY_IS_DRM },
188        { "width", METADATA_KEY_VIDEO_WIDTH },
189        { "height", METADATA_KEY_VIDEO_HEIGHT },
190    };
191    static const size_t kNumEntries = sizeof(kKeyMap) / sizeof(kKeyMap[0]);
192
193    for (size_t i = 0; i < kNumEntries; ++i) {
194        const char *value;
195        if ((value = mRetriever->extractMetadata(kKeyMap[i].key)) != NULL) {
196            status = client.addStringTag(kKeyMap[i].tag, value);
197            if (status != OK) {
198                return MEDIA_SCAN_RESULT_ERROR;
199            }
200        }
201    }
202
203    return MEDIA_SCAN_RESULT_OK;
204}
205
206MediaAlbumArt *StagefrightMediaScanner::extractAlbumArt(int fd) {
207    ALOGV("extractAlbumArt %d", fd);
208
209    off64_t size = lseek64(fd, 0, SEEK_END);
210    if (size < 0) {
211        return NULL;
212    }
213    lseek64(fd, 0, SEEK_SET);
214
215    sp<MediaMetadataRetriever> mRetriever(new MediaMetadataRetriever);
216    if (mRetriever->setDataSource(fd, 0, size) == OK) {
217        sp<IMemory> mem = mRetriever->extractAlbumArt();
218        if (mem != NULL) {
219            MediaAlbumArt *art = static_cast<MediaAlbumArt *>(mem->pointer());
220            return art->clone();
221        }
222    }
223
224    return NULL;
225}
226
227}  // namespace android
228