1 /*
2  * Copyright (C) 2010 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_TAG "MtpDatabaseJNI"
18 #include "utils/Log.h"
19 
20 #include <assert.h>
21 #include <fcntl.h>
22 #include <inttypes.h>
23 #include <limits.h>
24 #include <stdio.h>
25 #include <unistd.h>
26 
27 #include "jni.h"
28 #include "JNIHelp.h"
29 #include "android_runtime/AndroidRuntime.h"
30 #include "android_runtime/Log.h"
31 
32 #include "MtpDatabase.h"
33 #include "MtpDataPacket.h"
34 #include "MtpObjectInfo.h"
35 #include "MtpProperty.h"
36 #include "MtpStringBuffer.h"
37 #include "MtpUtils.h"
38 #include "mtp.h"
39 
40 extern "C" {
41 #include "libexif/exif-content.h"
42 #include "libexif/exif-data.h"
43 #include "libexif/exif-tag.h"
44 #include "libexif/exif-utils.h"
45 }
46 
47 using namespace android;
48 
49 // ----------------------------------------------------------------------------
50 
51 static jmethodID method_beginSendObject;
52 static jmethodID method_endSendObject;
53 static jmethodID method_getObjectList;
54 static jmethodID method_getNumObjects;
55 static jmethodID method_getSupportedPlaybackFormats;
56 static jmethodID method_getSupportedCaptureFormats;
57 static jmethodID method_getSupportedObjectProperties;
58 static jmethodID method_getSupportedDeviceProperties;
59 static jmethodID method_setObjectProperty;
60 static jmethodID method_getDeviceProperty;
61 static jmethodID method_setDeviceProperty;
62 static jmethodID method_getObjectPropertyList;
63 static jmethodID method_getObjectInfo;
64 static jmethodID method_getObjectFilePath;
65 static jmethodID method_deleteFile;
66 static jmethodID method_getObjectReferences;
67 static jmethodID method_setObjectReferences;
68 static jmethodID method_sessionStarted;
69 static jmethodID method_sessionEnded;
70 
71 static jfieldID field_context;
72 static jfieldID field_batteryLevel;
73 static jfieldID field_batteryScale;
74 
75 // MtpPropertyList fields
76 static jfieldID field_mCount;
77 static jfieldID field_mResult;
78 static jfieldID field_mObjectHandles;
79 static jfieldID field_mPropertyCodes;
80 static jfieldID field_mDataTypes;
81 static jfieldID field_mLongValues;
82 static jfieldID field_mStringValues;
83 
84 
getMtpDatabase(JNIEnv * env,jobject database)85 MtpDatabase* getMtpDatabase(JNIEnv *env, jobject database) {
86     return (MtpDatabase *)env->GetLongField(database, field_context);
87 }
88 
89 // ----------------------------------------------------------------------------
90 
91 class MyMtpDatabase : public MtpDatabase {
92 private:
93     jobject         mDatabase;
94     jintArray       mIntBuffer;
95     jlongArray      mLongBuffer;
96     jcharArray      mStringBuffer;
97 
98 public:
99                                     MyMtpDatabase(JNIEnv *env, jobject client);
100     virtual                         ~MyMtpDatabase();
101     void                            cleanup(JNIEnv *env);
102 
103     virtual MtpObjectHandle         beginSendObject(const char* path,
104                                             MtpObjectFormat format,
105                                             MtpObjectHandle parent,
106                                             MtpStorageID storage,
107                                             uint64_t size,
108                                             time_t modified);
109 
110     virtual void                    endSendObject(const char* path,
111                                             MtpObjectHandle handle,
112                                             MtpObjectFormat format,
113                                             bool succeeded);
114 
115     virtual MtpObjectHandleList*    getObjectList(MtpStorageID storageID,
116                                     MtpObjectFormat format,
117                                     MtpObjectHandle parent);
118 
119     virtual int                     getNumObjects(MtpStorageID storageID,
120                                             MtpObjectFormat format,
121                                             MtpObjectHandle parent);
122 
123     // callee should delete[] the results from these
124     // results can be NULL
125     virtual MtpObjectFormatList*    getSupportedPlaybackFormats();
126     virtual MtpObjectFormatList*    getSupportedCaptureFormats();
127     virtual MtpObjectPropertyList*  getSupportedObjectProperties(MtpObjectFormat format);
128     virtual MtpDevicePropertyList*  getSupportedDeviceProperties();
129 
130     virtual MtpResponseCode         getObjectPropertyValue(MtpObjectHandle handle,
131                                             MtpObjectProperty property,
132                                             MtpDataPacket& packet);
133 
134     virtual MtpResponseCode         setObjectPropertyValue(MtpObjectHandle handle,
135                                             MtpObjectProperty property,
136                                             MtpDataPacket& packet);
137 
138     virtual MtpResponseCode         getDevicePropertyValue(MtpDeviceProperty property,
139                                             MtpDataPacket& packet);
140 
141     virtual MtpResponseCode         setDevicePropertyValue(MtpDeviceProperty property,
142                                             MtpDataPacket& packet);
143 
144     virtual MtpResponseCode         resetDeviceProperty(MtpDeviceProperty property);
145 
146     virtual MtpResponseCode         getObjectPropertyList(MtpObjectHandle handle,
147                                             uint32_t format, uint32_t property,
148                                             int groupCode, int depth,
149                                             MtpDataPacket& packet);
150 
151     virtual MtpResponseCode         getObjectInfo(MtpObjectHandle handle,
152                                             MtpObjectInfo& info);
153 
154     virtual void*                   getThumbnail(MtpObjectHandle handle, size_t& outThumbSize);
155 
156     virtual MtpResponseCode         getObjectFilePath(MtpObjectHandle handle,
157                                             MtpString& outFilePath,
158                                             int64_t& outFileLength,
159                                             MtpObjectFormat& outFormat);
160     virtual MtpResponseCode         deleteFile(MtpObjectHandle handle);
161 
162     bool                            getObjectPropertyInfo(MtpObjectProperty property, int& type);
163     bool                            getDevicePropertyInfo(MtpDeviceProperty property, int& type);
164 
165     virtual MtpObjectHandleList*    getObjectReferences(MtpObjectHandle handle);
166 
167     virtual MtpResponseCode         setObjectReferences(MtpObjectHandle handle,
168                                             MtpObjectHandleList* references);
169 
170     virtual MtpProperty*            getObjectPropertyDesc(MtpObjectProperty property,
171                                             MtpObjectFormat format);
172 
173     virtual MtpProperty*            getDevicePropertyDesc(MtpDeviceProperty property);
174 
175     virtual void                    sessionStarted();
176 
177     virtual void                    sessionEnded();
178 };
179 
180 // ----------------------------------------------------------------------------
181 
checkAndClearExceptionFromCallback(JNIEnv * env,const char * methodName)182 static void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
183     if (env->ExceptionCheck()) {
184         ALOGE("An exception was thrown by callback '%s'.", methodName);
185         LOGE_EX(env);
186         env->ExceptionClear();
187     }
188 }
189 
190 // ----------------------------------------------------------------------------
191 
MyMtpDatabase(JNIEnv * env,jobject client)192 MyMtpDatabase::MyMtpDatabase(JNIEnv *env, jobject client)
193     :   mDatabase(env->NewGlobalRef(client)),
194         mIntBuffer(NULL),
195         mLongBuffer(NULL),
196         mStringBuffer(NULL)
197 {
198     // create buffers for out arguments
199     // we don't need to be thread-safe so this is OK
200     jintArray intArray = env->NewIntArray(3);
201     if (!intArray) {
202         return; // Already threw.
203     }
204     mIntBuffer = (jintArray)env->NewGlobalRef(intArray);
205     jlongArray longArray = env->NewLongArray(2);
206     if (!longArray) {
207         return; // Already threw.
208     }
209     mLongBuffer = (jlongArray)env->NewGlobalRef(longArray);
210     // Needs to be long enough to hold a file path for getObjectFilePath()
211     jcharArray charArray = env->NewCharArray(PATH_MAX + 1);
212     if (!charArray) {
213         return; // Already threw.
214     }
215     mStringBuffer = (jcharArray)env->NewGlobalRef(charArray);
216 }
217 
cleanup(JNIEnv * env)218 void MyMtpDatabase::cleanup(JNIEnv *env) {
219     env->DeleteGlobalRef(mDatabase);
220     env->DeleteGlobalRef(mIntBuffer);
221     env->DeleteGlobalRef(mLongBuffer);
222     env->DeleteGlobalRef(mStringBuffer);
223 }
224 
~MyMtpDatabase()225 MyMtpDatabase::~MyMtpDatabase() {
226 }
227 
beginSendObject(const char * path,MtpObjectFormat format,MtpObjectHandle parent,MtpStorageID storage,uint64_t size,time_t modified)228 MtpObjectHandle MyMtpDatabase::beginSendObject(const char* path,
229                                             MtpObjectFormat format,
230                                             MtpObjectHandle parent,
231                                             MtpStorageID storage,
232                                             uint64_t size,
233                                             time_t modified) {
234     JNIEnv* env = AndroidRuntime::getJNIEnv();
235     jstring pathStr = env->NewStringUTF(path);
236     MtpObjectHandle result = env->CallIntMethod(mDatabase, method_beginSendObject,
237             pathStr, (jint)format, (jint)parent, (jint)storage,
238             (jlong)size, (jlong)modified);
239 
240     if (pathStr)
241         env->DeleteLocalRef(pathStr);
242     checkAndClearExceptionFromCallback(env, __FUNCTION__);
243     return result;
244 }
245 
endSendObject(const char * path,MtpObjectHandle handle,MtpObjectFormat format,bool succeeded)246 void MyMtpDatabase::endSendObject(const char* path, MtpObjectHandle handle,
247                                 MtpObjectFormat format, bool succeeded) {
248     JNIEnv* env = AndroidRuntime::getJNIEnv();
249     jstring pathStr = env->NewStringUTF(path);
250     env->CallVoidMethod(mDatabase, method_endSendObject, pathStr,
251                         (jint)handle, (jint)format, (jboolean)succeeded);
252 
253     if (pathStr)
254         env->DeleteLocalRef(pathStr);
255     checkAndClearExceptionFromCallback(env, __FUNCTION__);
256 }
257 
getObjectList(MtpStorageID storageID,MtpObjectFormat format,MtpObjectHandle parent)258 MtpObjectHandleList* MyMtpDatabase::getObjectList(MtpStorageID storageID,
259                                     MtpObjectFormat format,
260                                     MtpObjectHandle parent) {
261     JNIEnv* env = AndroidRuntime::getJNIEnv();
262     jintArray array = (jintArray)env->CallObjectMethod(mDatabase, method_getObjectList,
263                 (jint)storageID, (jint)format, (jint)parent);
264     if (!array)
265         return NULL;
266     MtpObjectHandleList* list = new MtpObjectHandleList();
267     jint* handles = env->GetIntArrayElements(array, 0);
268     jsize length = env->GetArrayLength(array);
269     for (int i = 0; i < length; i++)
270         list->push(handles[i]);
271     env->ReleaseIntArrayElements(array, handles, 0);
272     env->DeleteLocalRef(array);
273 
274     checkAndClearExceptionFromCallback(env, __FUNCTION__);
275     return list;
276 }
277 
getNumObjects(MtpStorageID storageID,MtpObjectFormat format,MtpObjectHandle parent)278 int MyMtpDatabase::getNumObjects(MtpStorageID storageID,
279                                 MtpObjectFormat format,
280                                 MtpObjectHandle parent) {
281     JNIEnv* env = AndroidRuntime::getJNIEnv();
282     int result = env->CallIntMethod(mDatabase, method_getNumObjects,
283                 (jint)storageID, (jint)format, (jint)parent);
284 
285     checkAndClearExceptionFromCallback(env, __FUNCTION__);
286     return result;
287 }
288 
getSupportedPlaybackFormats()289 MtpObjectFormatList* MyMtpDatabase::getSupportedPlaybackFormats() {
290     JNIEnv* env = AndroidRuntime::getJNIEnv();
291     jintArray array = (jintArray)env->CallObjectMethod(mDatabase,
292             method_getSupportedPlaybackFormats);
293     if (!array)
294         return NULL;
295     MtpObjectFormatList* list = new MtpObjectFormatList();
296     jint* formats = env->GetIntArrayElements(array, 0);
297     jsize length = env->GetArrayLength(array);
298     for (int i = 0; i < length; i++)
299         list->push(formats[i]);
300     env->ReleaseIntArrayElements(array, formats, 0);
301     env->DeleteLocalRef(array);
302 
303     checkAndClearExceptionFromCallback(env, __FUNCTION__);
304     return list;
305 }
306 
getSupportedCaptureFormats()307 MtpObjectFormatList* MyMtpDatabase::getSupportedCaptureFormats() {
308     JNIEnv* env = AndroidRuntime::getJNIEnv();
309     jintArray array = (jintArray)env->CallObjectMethod(mDatabase,
310             method_getSupportedCaptureFormats);
311     if (!array)
312         return NULL;
313     MtpObjectFormatList* list = new MtpObjectFormatList();
314     jint* formats = env->GetIntArrayElements(array, 0);
315     jsize length = env->GetArrayLength(array);
316     for (int i = 0; i < length; i++)
317         list->push(formats[i]);
318     env->ReleaseIntArrayElements(array, formats, 0);
319     env->DeleteLocalRef(array);
320 
321     checkAndClearExceptionFromCallback(env, __FUNCTION__);
322     return list;
323 }
324 
getSupportedObjectProperties(MtpObjectFormat format)325 MtpObjectPropertyList* MyMtpDatabase::getSupportedObjectProperties(MtpObjectFormat format) {
326     JNIEnv* env = AndroidRuntime::getJNIEnv();
327     jintArray array = (jintArray)env->CallObjectMethod(mDatabase,
328             method_getSupportedObjectProperties, (jint)format);
329     if (!array)
330         return NULL;
331     MtpObjectPropertyList* list = new MtpObjectPropertyList();
332     jint* properties = env->GetIntArrayElements(array, 0);
333     jsize length = env->GetArrayLength(array);
334     for (int i = 0; i < length; i++)
335         list->push(properties[i]);
336     env->ReleaseIntArrayElements(array, properties, 0);
337     env->DeleteLocalRef(array);
338 
339     checkAndClearExceptionFromCallback(env, __FUNCTION__);
340     return list;
341 }
342 
getSupportedDeviceProperties()343 MtpDevicePropertyList* MyMtpDatabase::getSupportedDeviceProperties() {
344     JNIEnv* env = AndroidRuntime::getJNIEnv();
345     jintArray array = (jintArray)env->CallObjectMethod(mDatabase,
346             method_getSupportedDeviceProperties);
347     if (!array)
348         return NULL;
349     MtpDevicePropertyList* list = new MtpDevicePropertyList();
350     jint* properties = env->GetIntArrayElements(array, 0);
351     jsize length = env->GetArrayLength(array);
352     for (int i = 0; i < length; i++)
353         list->push(properties[i]);
354     env->ReleaseIntArrayElements(array, properties, 0);
355     env->DeleteLocalRef(array);
356 
357     checkAndClearExceptionFromCallback(env, __FUNCTION__);
358     return list;
359 }
360 
getObjectPropertyValue(MtpObjectHandle handle,MtpObjectProperty property,MtpDataPacket & packet)361 MtpResponseCode MyMtpDatabase::getObjectPropertyValue(MtpObjectHandle handle,
362                                             MtpObjectProperty property,
363                                             MtpDataPacket& packet) {
364     JNIEnv* env = AndroidRuntime::getJNIEnv();
365     jobject list = env->CallObjectMethod(mDatabase, method_getObjectPropertyList,
366                 (jlong)handle, 0, (jlong)property, 0, 0);
367     MtpResponseCode result = env->GetIntField(list, field_mResult);
368     int count = env->GetIntField(list, field_mCount);
369     if (result == MTP_RESPONSE_OK && count != 1)
370         result = MTP_RESPONSE_GENERAL_ERROR;
371 
372     if (result == MTP_RESPONSE_OK) {
373         jintArray objectHandlesArray = (jintArray)env->GetObjectField(list, field_mObjectHandles);
374         jintArray propertyCodesArray = (jintArray)env->GetObjectField(list, field_mPropertyCodes);
375         jintArray dataTypesArray = (jintArray)env->GetObjectField(list, field_mDataTypes);
376         jlongArray longValuesArray = (jlongArray)env->GetObjectField(list, field_mLongValues);
377         jobjectArray stringValuesArray = (jobjectArray)env->GetObjectField(list, field_mStringValues);
378 
379         jint* objectHandles = env->GetIntArrayElements(objectHandlesArray, 0);
380         jint* propertyCodes = env->GetIntArrayElements(propertyCodesArray, 0);
381         jint* dataTypes = env->GetIntArrayElements(dataTypesArray, 0);
382         jlong* longValues = (longValuesArray ? env->GetLongArrayElements(longValuesArray, 0) : NULL);
383 
384         int type = dataTypes[0];
385         jlong longValue = (longValues ? longValues[0] : 0);
386 
387         // special case date properties, which are strings to MTP
388         // but stored internally as a uint64
389         if (property == MTP_PROPERTY_DATE_MODIFIED || property == MTP_PROPERTY_DATE_ADDED) {
390             char    date[20];
391             formatDateTime(longValue, date, sizeof(date));
392             packet.putString(date);
393             goto out;
394         }
395         // release date is stored internally as just the year
396         if (property == MTP_PROPERTY_ORIGINAL_RELEASE_DATE) {
397             char    date[20];
398             snprintf(date, sizeof(date), "%04" PRId64 "0101T000000", longValue);
399             packet.putString(date);
400             goto out;
401         }
402 
403         switch (type) {
404             case MTP_TYPE_INT8:
405                 packet.putInt8(longValue);
406                 break;
407             case MTP_TYPE_UINT8:
408                 packet.putUInt8(longValue);
409                 break;
410             case MTP_TYPE_INT16:
411                 packet.putInt16(longValue);
412                 break;
413             case MTP_TYPE_UINT16:
414                 packet.putUInt16(longValue);
415                 break;
416             case MTP_TYPE_INT32:
417                 packet.putInt32(longValue);
418                 break;
419             case MTP_TYPE_UINT32:
420                 packet.putUInt32(longValue);
421                 break;
422             case MTP_TYPE_INT64:
423                 packet.putInt64(longValue);
424                 break;
425             case MTP_TYPE_UINT64:
426                 packet.putUInt64(longValue);
427                 break;
428             case MTP_TYPE_INT128:
429                 packet.putInt128(longValue);
430                 break;
431             case MTP_TYPE_UINT128:
432                 packet.putInt128(longValue);
433                 break;
434             case MTP_TYPE_STR:
435             {
436                 jstring stringValue = (jstring)env->GetObjectArrayElement(stringValuesArray, 0);
437                 const char* str = (stringValue ? env->GetStringUTFChars(stringValue, NULL) : NULL);
438                 if (stringValue) {
439                     packet.putString(str);
440                     env->ReleaseStringUTFChars(stringValue, str);
441                 } else {
442                     packet.putEmptyString();
443                 }
444                 env->DeleteLocalRef(stringValue);
445                 break;
446              }
447             default:
448                 ALOGE("unsupported type in getObjectPropertyValue\n");
449                 result = MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT;
450         }
451 out:
452         env->ReleaseIntArrayElements(objectHandlesArray, objectHandles, 0);
453         env->ReleaseIntArrayElements(propertyCodesArray, propertyCodes, 0);
454         env->ReleaseIntArrayElements(dataTypesArray, dataTypes, 0);
455         if (longValues)
456             env->ReleaseLongArrayElements(longValuesArray, longValues, 0);
457 
458         env->DeleteLocalRef(objectHandlesArray);
459         env->DeleteLocalRef(propertyCodesArray);
460         env->DeleteLocalRef(dataTypesArray);
461         if (longValuesArray)
462             env->DeleteLocalRef(longValuesArray);
463         if (stringValuesArray)
464             env->DeleteLocalRef(stringValuesArray);
465     }
466 
467     env->DeleteLocalRef(list);
468     checkAndClearExceptionFromCallback(env, __FUNCTION__);
469     return result;
470 }
471 
readLongValue(int type,MtpDataPacket & packet,jlong & longValue)472 static bool readLongValue(int type, MtpDataPacket& packet, jlong& longValue) {
473     switch (type) {
474         case MTP_TYPE_INT8: {
475             int8_t temp;
476             if (!packet.getInt8(temp)) return false;
477             longValue = temp;
478             break;
479         }
480         case MTP_TYPE_UINT8: {
481             uint8_t temp;
482             if (!packet.getUInt8(temp)) return false;
483             longValue = temp;
484             break;
485         }
486         case MTP_TYPE_INT16: {
487             int16_t temp;
488             if (!packet.getInt16(temp)) return false;
489             longValue = temp;
490             break;
491         }
492         case MTP_TYPE_UINT16: {
493             uint16_t temp;
494             if (!packet.getUInt16(temp)) return false;
495             longValue = temp;
496             break;
497         }
498         case MTP_TYPE_INT32: {
499             int32_t temp;
500             if (!packet.getInt32(temp)) return false;
501             longValue = temp;
502             break;
503         }
504         case MTP_TYPE_UINT32: {
505             uint32_t temp;
506             if (!packet.getUInt32(temp)) return false;
507             longValue = temp;
508             break;
509         }
510         case MTP_TYPE_INT64: {
511             int64_t temp;
512             if (!packet.getInt64(temp)) return false;
513             longValue = temp;
514             break;
515         }
516         case MTP_TYPE_UINT64: {
517             uint64_t temp;
518             if (!packet.getUInt64(temp)) return false;
519             longValue = temp;
520             break;
521         }
522         default:
523             ALOGE("unsupported type in readLongValue");
524             return false;
525     }
526     return true;
527 }
528 
setObjectPropertyValue(MtpObjectHandle handle,MtpObjectProperty property,MtpDataPacket & packet)529 MtpResponseCode MyMtpDatabase::setObjectPropertyValue(MtpObjectHandle handle,
530                                             MtpObjectProperty property,
531                                             MtpDataPacket& packet) {
532     int         type;
533 
534     if (!getObjectPropertyInfo(property, type))
535         return MTP_RESPONSE_OBJECT_PROP_NOT_SUPPORTED;
536 
537     JNIEnv* env = AndroidRuntime::getJNIEnv();
538     jlong longValue = 0;
539     jstring stringValue = NULL;
540     MtpResponseCode result = MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT;
541 
542     if (type == MTP_TYPE_STR) {
543         MtpStringBuffer buffer;
544         if (!packet.getString(buffer)) goto fail;
545         stringValue = env->NewStringUTF((const char *)buffer);
546     } else {
547         if (!readLongValue(type, packet, longValue)) goto fail;
548     }
549 
550     result = env->CallIntMethod(mDatabase, method_setObjectProperty,
551                 (jint)handle, (jint)property, longValue, stringValue);
552     if (stringValue)
553         env->DeleteLocalRef(stringValue);
554 
555 fail:
556     checkAndClearExceptionFromCallback(env, __FUNCTION__);
557     return result;
558 }
559 
getDevicePropertyValue(MtpDeviceProperty property,MtpDataPacket & packet)560 MtpResponseCode MyMtpDatabase::getDevicePropertyValue(MtpDeviceProperty property,
561                                             MtpDataPacket& packet) {
562     JNIEnv* env = AndroidRuntime::getJNIEnv();
563 
564     if (property == MTP_DEVICE_PROPERTY_BATTERY_LEVEL) {
565         // special case - implemented here instead of Java
566         packet.putUInt8((uint8_t)env->GetIntField(mDatabase, field_batteryLevel));
567         return MTP_RESPONSE_OK;
568     } else {
569         int type;
570 
571         if (!getDevicePropertyInfo(property, type))
572             return MTP_RESPONSE_DEVICE_PROP_NOT_SUPPORTED;
573 
574         jint result = env->CallIntMethod(mDatabase, method_getDeviceProperty,
575                     (jint)property, mLongBuffer, mStringBuffer);
576         if (result != MTP_RESPONSE_OK) {
577             checkAndClearExceptionFromCallback(env, __FUNCTION__);
578             return result;
579         }
580 
581         jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0);
582         jlong longValue = longValues[0];
583         env->ReleaseLongArrayElements(mLongBuffer, longValues, 0);
584 
585         switch (type) {
586             case MTP_TYPE_INT8:
587                 packet.putInt8(longValue);
588                 break;
589             case MTP_TYPE_UINT8:
590                 packet.putUInt8(longValue);
591                 break;
592             case MTP_TYPE_INT16:
593                 packet.putInt16(longValue);
594                 break;
595             case MTP_TYPE_UINT16:
596                 packet.putUInt16(longValue);
597                 break;
598             case MTP_TYPE_INT32:
599                 packet.putInt32(longValue);
600                 break;
601             case MTP_TYPE_UINT32:
602                 packet.putUInt32(longValue);
603                 break;
604             case MTP_TYPE_INT64:
605                 packet.putInt64(longValue);
606                 break;
607             case MTP_TYPE_UINT64:
608                 packet.putUInt64(longValue);
609                 break;
610             case MTP_TYPE_INT128:
611                 packet.putInt128(longValue);
612                 break;
613             case MTP_TYPE_UINT128:
614                 packet.putInt128(longValue);
615                 break;
616             case MTP_TYPE_STR:
617             {
618                 jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
619                 packet.putString(str);
620                 env->ReleaseCharArrayElements(mStringBuffer, str, 0);
621                 break;
622              }
623             default:
624                 ALOGE("unsupported type in getDevicePropertyValue\n");
625                 return MTP_RESPONSE_INVALID_DEVICE_PROP_FORMAT;
626         }
627 
628         checkAndClearExceptionFromCallback(env, __FUNCTION__);
629         return MTP_RESPONSE_OK;
630     }
631 }
632 
setDevicePropertyValue(MtpDeviceProperty property,MtpDataPacket & packet)633 MtpResponseCode MyMtpDatabase::setDevicePropertyValue(MtpDeviceProperty property,
634                                             MtpDataPacket& packet) {
635     int         type;
636 
637     if (!getDevicePropertyInfo(property, type))
638         return MTP_RESPONSE_DEVICE_PROP_NOT_SUPPORTED;
639 
640     JNIEnv* env = AndroidRuntime::getJNIEnv();
641     jlong longValue = 0;
642     jstring stringValue = NULL;
643     MtpResponseCode result = MTP_RESPONSE_INVALID_DEVICE_PROP_FORMAT;
644 
645     if (type == MTP_TYPE_STR) {
646         MtpStringBuffer buffer;
647         if (!packet.getString(buffer)) goto fail;
648         stringValue = env->NewStringUTF((const char *)buffer);
649     } else {
650         if (!readLongValue(type, packet, longValue)) goto fail;
651     }
652 
653     result = env->CallIntMethod(mDatabase, method_setDeviceProperty,
654                 (jint)property, longValue, stringValue);
655     if (stringValue)
656         env->DeleteLocalRef(stringValue);
657 
658 fail:
659     checkAndClearExceptionFromCallback(env, __FUNCTION__);
660     return result;
661 }
662 
resetDeviceProperty(MtpDeviceProperty)663 MtpResponseCode MyMtpDatabase::resetDeviceProperty(MtpDeviceProperty /*property*/) {
664     return -1;
665 }
666 
getObjectPropertyList(MtpObjectHandle handle,uint32_t format,uint32_t property,int groupCode,int depth,MtpDataPacket & packet)667 MtpResponseCode MyMtpDatabase::getObjectPropertyList(MtpObjectHandle handle,
668                                             uint32_t format, uint32_t property,
669                                             int groupCode, int depth,
670                                             MtpDataPacket& packet) {
671     JNIEnv* env = AndroidRuntime::getJNIEnv();
672     jobject list = env->CallObjectMethod(mDatabase, method_getObjectPropertyList,
673                 (jlong)handle, (jint)format, (jlong)property, (jint)groupCode, (jint)depth);
674     checkAndClearExceptionFromCallback(env, __FUNCTION__);
675     if (!list)
676         return MTP_RESPONSE_GENERAL_ERROR;
677     int count = env->GetIntField(list, field_mCount);
678     MtpResponseCode result = env->GetIntField(list, field_mResult);
679 
680     packet.putUInt32(count);
681     if (count > 0) {
682         jintArray objectHandlesArray = (jintArray)env->GetObjectField(list, field_mObjectHandles);
683         jintArray propertyCodesArray = (jintArray)env->GetObjectField(list, field_mPropertyCodes);
684         jintArray dataTypesArray = (jintArray)env->GetObjectField(list, field_mDataTypes);
685         jlongArray longValuesArray = (jlongArray)env->GetObjectField(list, field_mLongValues);
686         jobjectArray stringValuesArray = (jobjectArray)env->GetObjectField(list, field_mStringValues);
687 
688         jint* objectHandles = env->GetIntArrayElements(objectHandlesArray, 0);
689         jint* propertyCodes = env->GetIntArrayElements(propertyCodesArray, 0);
690         jint* dataTypes = env->GetIntArrayElements(dataTypesArray, 0);
691         jlong* longValues = (longValuesArray ? env->GetLongArrayElements(longValuesArray, 0) : NULL);
692 
693         for (int i = 0; i < count; i++) {
694             packet.putUInt32(objectHandles[i]);
695             packet.putUInt16(propertyCodes[i]);
696             int type = dataTypes[i];
697             packet.putUInt16(type);
698 
699             switch (type) {
700                 case MTP_TYPE_INT8:
701                     packet.putInt8(longValues[i]);
702                     break;
703                 case MTP_TYPE_UINT8:
704                     packet.putUInt8(longValues[i]);
705                     break;
706                 case MTP_TYPE_INT16:
707                     packet.putInt16(longValues[i]);
708                     break;
709                 case MTP_TYPE_UINT16:
710                     packet.putUInt16(longValues[i]);
711                     break;
712                 case MTP_TYPE_INT32:
713                     packet.putInt32(longValues[i]);
714                     break;
715                 case MTP_TYPE_UINT32:
716                     packet.putUInt32(longValues[i]);
717                     break;
718                 case MTP_TYPE_INT64:
719                     packet.putInt64(longValues[i]);
720                     break;
721                 case MTP_TYPE_UINT64:
722                     packet.putUInt64(longValues[i]);
723                     break;
724                 case MTP_TYPE_INT128:
725                     packet.putInt128(longValues[i]);
726                     break;
727                 case MTP_TYPE_UINT128:
728                     packet.putUInt128(longValues[i]);
729                     break;
730                 case MTP_TYPE_STR: {
731                     jstring value = (jstring)env->GetObjectArrayElement(stringValuesArray, i);
732                     const char *valueStr = (value ? env->GetStringUTFChars(value, NULL) : NULL);
733                     if (valueStr) {
734                         packet.putString(valueStr);
735                         env->ReleaseStringUTFChars(value, valueStr);
736                     } else {
737                         packet.putEmptyString();
738                     }
739                     env->DeleteLocalRef(value);
740                     break;
741                 }
742                 default:
743                     ALOGE("bad or unsupported data type in MyMtpDatabase::getObjectPropertyList");
744                     break;
745             }
746         }
747 
748         env->ReleaseIntArrayElements(objectHandlesArray, objectHandles, 0);
749         env->ReleaseIntArrayElements(propertyCodesArray, propertyCodes, 0);
750         env->ReleaseIntArrayElements(dataTypesArray, dataTypes, 0);
751         if (longValues)
752             env->ReleaseLongArrayElements(longValuesArray, longValues, 0);
753 
754         env->DeleteLocalRef(objectHandlesArray);
755         env->DeleteLocalRef(propertyCodesArray);
756         env->DeleteLocalRef(dataTypesArray);
757         if (longValuesArray)
758             env->DeleteLocalRef(longValuesArray);
759         if (stringValuesArray)
760             env->DeleteLocalRef(stringValuesArray);
761     }
762 
763     env->DeleteLocalRef(list);
764     checkAndClearExceptionFromCallback(env, __FUNCTION__);
765     return result;
766 }
767 
foreachentry(ExifEntry * entry,void *)768 static void foreachentry(ExifEntry *entry, void * /*user*/) {
769     char buf[1024];
770     ALOGI("entry %x, format %d, size %d: %s",
771             entry->tag, entry->format, entry->size, exif_entry_get_value(entry, buf, sizeof(buf)));
772 }
773 
foreachcontent(ExifContent * content,void * user)774 static void foreachcontent(ExifContent *content, void *user) {
775     ALOGI("content %d", exif_content_get_ifd(content));
776     exif_content_foreach_entry(content, foreachentry, user);
777 }
778 
getLongFromExifEntry(ExifEntry * e)779 static long getLongFromExifEntry(ExifEntry *e) {
780     ExifByteOrder o = exif_data_get_byte_order(e->parent->parent);
781     return exif_get_long(e->data, o);
782 }
783 
getObjectInfo(MtpObjectHandle handle,MtpObjectInfo & info)784 MtpResponseCode MyMtpDatabase::getObjectInfo(MtpObjectHandle handle,
785                                             MtpObjectInfo& info) {
786     char            date[20];
787     MtpString       path;
788     int64_t         length;
789     MtpObjectFormat format;
790 
791     MtpResponseCode result = getObjectFilePath(handle, path, length, format);
792     if (result != MTP_RESPONSE_OK) {
793         return result;
794     }
795     info.mCompressedSize = (length > 0xFFFFFFFFLL ? 0xFFFFFFFF : (uint32_t)length);
796 
797     JNIEnv* env = AndroidRuntime::getJNIEnv();
798     if (!env->CallBooleanMethod(mDatabase, method_getObjectInfo,
799                 (jint)handle, mIntBuffer, mStringBuffer, mLongBuffer)) {
800         return MTP_RESPONSE_INVALID_OBJECT_HANDLE;
801     }
802 
803     jint* intValues = env->GetIntArrayElements(mIntBuffer, 0);
804     info.mStorageID = intValues[0];
805     info.mFormat = intValues[1];
806     info.mParent = intValues[2];
807     env->ReleaseIntArrayElements(mIntBuffer, intValues, 0);
808 
809     jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0);
810     info.mDateCreated = longValues[0];
811     info.mDateModified = longValues[1];
812     env->ReleaseLongArrayElements(mLongBuffer, longValues, 0);
813 
814 //    info.mAssociationType = (format == MTP_FORMAT_ASSOCIATION ?
815 //                            MTP_ASSOCIATION_TYPE_GENERIC_FOLDER :
816 //                            MTP_ASSOCIATION_TYPE_UNDEFINED);
817     info.mAssociationType = MTP_ASSOCIATION_TYPE_UNDEFINED;
818 
819     jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
820     MtpString temp(str);
821     info.mName = strdup((const char *)temp);
822     env->ReleaseCharArrayElements(mStringBuffer, str, 0);
823 
824     // read EXIF data for thumbnail information
825     if (info.mFormat == MTP_FORMAT_EXIF_JPEG || info.mFormat == MTP_FORMAT_JFIF) {
826 
827         ExifData *exifdata = exif_data_new_from_file(path);
828         if (exifdata) {
829             //exif_data_foreach_content(exifdata, foreachcontent, NULL);
830 
831             // XXX get this from exif, or parse jpeg header instead?
832             ExifEntry *w = exif_content_get_entry(
833                     exifdata->ifd[EXIF_IFD_EXIF], EXIF_TAG_PIXEL_X_DIMENSION);
834             ExifEntry *h = exif_content_get_entry(
835                     exifdata->ifd[EXIF_IFD_EXIF], EXIF_TAG_PIXEL_Y_DIMENSION);
836             info.mThumbCompressedSize = exifdata->data ? exifdata->size : 0;
837             info.mThumbFormat = MTP_FORMAT_EXIF_JPEG;
838             info.mImagePixWidth = w ? getLongFromExifEntry(w) : 0;
839             info.mImagePixHeight = h ? getLongFromExifEntry(h) : 0;
840             exif_data_unref(exifdata);
841         }
842     }
843 
844     checkAndClearExceptionFromCallback(env, __FUNCTION__);
845     return MTP_RESPONSE_OK;
846 }
847 
getThumbnail(MtpObjectHandle handle,size_t & outThumbSize)848 void* MyMtpDatabase::getThumbnail(MtpObjectHandle handle, size_t& outThumbSize) {
849     MtpString path;
850     int64_t length;
851     MtpObjectFormat format;
852     void* result = NULL;
853     outThumbSize = 0;
854 
855     if (getObjectFilePath(handle, path, length, format) == MTP_RESPONSE_OK
856             && (format == MTP_FORMAT_EXIF_JPEG || format == MTP_FORMAT_JFIF)) {
857 
858         ExifData *exifdata = exif_data_new_from_file(path);
859         if (exifdata) {
860             if (exifdata->data) {
861                 result = malloc(exifdata->size);
862                 if (result) {
863                     memcpy(result, exifdata->data, exifdata->size);
864                     outThumbSize = exifdata->size;
865                 }
866             }
867             exif_data_unref(exifdata);
868         }
869     }
870 
871     return result;
872 }
873 
getObjectFilePath(MtpObjectHandle handle,MtpString & outFilePath,int64_t & outFileLength,MtpObjectFormat & outFormat)874 MtpResponseCode MyMtpDatabase::getObjectFilePath(MtpObjectHandle handle,
875                                             MtpString& outFilePath,
876                                             int64_t& outFileLength,
877                                             MtpObjectFormat& outFormat) {
878     JNIEnv* env = AndroidRuntime::getJNIEnv();
879     jint result = env->CallIntMethod(mDatabase, method_getObjectFilePath,
880                 (jint)handle, mStringBuffer, mLongBuffer);
881     if (result != MTP_RESPONSE_OK) {
882         checkAndClearExceptionFromCallback(env, __FUNCTION__);
883         return result;
884     }
885 
886     jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
887     outFilePath.setTo(str, strlen16(str));
888     env->ReleaseCharArrayElements(mStringBuffer, str, 0);
889 
890     jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0);
891     outFileLength = longValues[0];
892     outFormat = longValues[1];
893     env->ReleaseLongArrayElements(mLongBuffer, longValues, 0);
894 
895     checkAndClearExceptionFromCallback(env, __FUNCTION__);
896     return result;
897 }
898 
deleteFile(MtpObjectHandle handle)899 MtpResponseCode MyMtpDatabase::deleteFile(MtpObjectHandle handle) {
900     JNIEnv* env = AndroidRuntime::getJNIEnv();
901     MtpResponseCode result = env->CallIntMethod(mDatabase, method_deleteFile, (jint)handle);
902 
903     checkAndClearExceptionFromCallback(env, __FUNCTION__);
904     return result;
905 }
906 
907 struct PropertyTableEntry {
908     MtpObjectProperty   property;
909     int                 type;
910 };
911 
912 static const PropertyTableEntry   kObjectPropertyTable[] = {
913     {   MTP_PROPERTY_STORAGE_ID,        MTP_TYPE_UINT32     },
914     {   MTP_PROPERTY_OBJECT_FORMAT,     MTP_TYPE_UINT16     },
915     {   MTP_PROPERTY_PROTECTION_STATUS, MTP_TYPE_UINT16     },
916     {   MTP_PROPERTY_OBJECT_SIZE,       MTP_TYPE_UINT64     },
917     {   MTP_PROPERTY_OBJECT_FILE_NAME,  MTP_TYPE_STR        },
918     {   MTP_PROPERTY_DATE_MODIFIED,     MTP_TYPE_STR        },
919     {   MTP_PROPERTY_PARENT_OBJECT,     MTP_TYPE_UINT32     },
920     {   MTP_PROPERTY_PERSISTENT_UID,    MTP_TYPE_UINT128    },
921     {   MTP_PROPERTY_NAME,              MTP_TYPE_STR        },
922     {   MTP_PROPERTY_DISPLAY_NAME,      MTP_TYPE_STR        },
923     {   MTP_PROPERTY_DATE_ADDED,        MTP_TYPE_STR        },
924     {   MTP_PROPERTY_ARTIST,            MTP_TYPE_STR        },
925     {   MTP_PROPERTY_ALBUM_NAME,        MTP_TYPE_STR        },
926     {   MTP_PROPERTY_ALBUM_ARTIST,      MTP_TYPE_STR        },
927     {   MTP_PROPERTY_TRACK,             MTP_TYPE_UINT16     },
928     {   MTP_PROPERTY_ORIGINAL_RELEASE_DATE, MTP_TYPE_STR    },
929     {   MTP_PROPERTY_GENRE,             MTP_TYPE_STR        },
930     {   MTP_PROPERTY_COMPOSER,          MTP_TYPE_STR        },
931     {   MTP_PROPERTY_DURATION,          MTP_TYPE_UINT32     },
932     {   MTP_PROPERTY_DESCRIPTION,       MTP_TYPE_STR        },
933     {   MTP_PROPERTY_AUDIO_WAVE_CODEC,  MTP_TYPE_UINT32     },
934     {   MTP_PROPERTY_BITRATE_TYPE,      MTP_TYPE_UINT16     },
935     {   MTP_PROPERTY_AUDIO_BITRATE,     MTP_TYPE_UINT32     },
936     {   MTP_PROPERTY_NUMBER_OF_CHANNELS,MTP_TYPE_UINT16     },
937     {   MTP_PROPERTY_SAMPLE_RATE,       MTP_TYPE_UINT32     },
938 };
939 
940 static const PropertyTableEntry   kDevicePropertyTable[] = {
941     {   MTP_DEVICE_PROPERTY_SYNCHRONIZATION_PARTNER,    MTP_TYPE_STR },
942     {   MTP_DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME,       MTP_TYPE_STR },
943     {   MTP_DEVICE_PROPERTY_IMAGE_SIZE,                 MTP_TYPE_STR },
944     {   MTP_DEVICE_PROPERTY_BATTERY_LEVEL,              MTP_TYPE_UINT8 },
945 };
946 
getObjectPropertyInfo(MtpObjectProperty property,int & type)947 bool MyMtpDatabase::getObjectPropertyInfo(MtpObjectProperty property, int& type) {
948     int count = sizeof(kObjectPropertyTable) / sizeof(kObjectPropertyTable[0]);
949     const PropertyTableEntry* entry = kObjectPropertyTable;
950     for (int i = 0; i < count; i++, entry++) {
951         if (entry->property == property) {
952             type = entry->type;
953             return true;
954         }
955     }
956     return false;
957 }
958 
getDevicePropertyInfo(MtpDeviceProperty property,int & type)959 bool MyMtpDatabase::getDevicePropertyInfo(MtpDeviceProperty property, int& type) {
960     int count = sizeof(kDevicePropertyTable) / sizeof(kDevicePropertyTable[0]);
961     const PropertyTableEntry* entry = kDevicePropertyTable;
962     for (int i = 0; i < count; i++, entry++) {
963         if (entry->property == property) {
964             type = entry->type;
965             return true;
966         }
967     }
968     return false;
969 }
970 
getObjectReferences(MtpObjectHandle handle)971 MtpObjectHandleList* MyMtpDatabase::getObjectReferences(MtpObjectHandle handle) {
972     JNIEnv* env = AndroidRuntime::getJNIEnv();
973     jintArray array = (jintArray)env->CallObjectMethod(mDatabase, method_getObjectReferences,
974                 (jint)handle);
975     if (!array)
976         return NULL;
977     MtpObjectHandleList* list = new MtpObjectHandleList();
978     jint* handles = env->GetIntArrayElements(array, 0);
979     jsize length = env->GetArrayLength(array);
980     for (int i = 0; i < length; i++)
981         list->push(handles[i]);
982     env->ReleaseIntArrayElements(array, handles, 0);
983     env->DeleteLocalRef(array);
984 
985     checkAndClearExceptionFromCallback(env, __FUNCTION__);
986     return list;
987 }
988 
setObjectReferences(MtpObjectHandle handle,MtpObjectHandleList * references)989 MtpResponseCode MyMtpDatabase::setObjectReferences(MtpObjectHandle handle,
990                                                     MtpObjectHandleList* references) {
991     JNIEnv* env = AndroidRuntime::getJNIEnv();
992     int count = references->size();
993     jintArray array = env->NewIntArray(count);
994     if (!array) {
995         ALOGE("out of memory in setObjectReferences");
996         return false;
997     }
998     jint* handles = env->GetIntArrayElements(array, 0);
999      for (int i = 0; i < count; i++)
1000         handles[i] = (*references)[i];
1001     env->ReleaseIntArrayElements(array, handles, 0);
1002     MtpResponseCode result = env->CallIntMethod(mDatabase, method_setObjectReferences,
1003                 (jint)handle, array);
1004     env->DeleteLocalRef(array);
1005 
1006     checkAndClearExceptionFromCallback(env, __FUNCTION__);
1007     return result;
1008 }
1009 
getObjectPropertyDesc(MtpObjectProperty property,MtpObjectFormat format)1010 MtpProperty* MyMtpDatabase::getObjectPropertyDesc(MtpObjectProperty property,
1011                                             MtpObjectFormat format) {
1012     static const int channelEnum[] = {
1013                                         1,  // mono
1014                                         2,  // stereo
1015                                         3,  // 2.1
1016                                         4,  // 3
1017                                         5,  // 3.1
1018                                         6,  // 4
1019                                         7,  // 4.1
1020                                         8,  // 5
1021                                         9,  // 5.1
1022                                     };
1023     static const int bitrateEnum[] = {
1024                                         1,  // fixed rate
1025                                         2,  // variable rate
1026                                      };
1027 
1028     MtpProperty* result = NULL;
1029     switch (property) {
1030         case MTP_PROPERTY_OBJECT_FORMAT:
1031             // use format as default value
1032             result = new MtpProperty(property, MTP_TYPE_UINT16, false, format);
1033             break;
1034         case MTP_PROPERTY_PROTECTION_STATUS:
1035         case MTP_PROPERTY_TRACK:
1036             result = new MtpProperty(property, MTP_TYPE_UINT16);
1037             break;
1038         case MTP_PROPERTY_STORAGE_ID:
1039         case MTP_PROPERTY_PARENT_OBJECT:
1040         case MTP_PROPERTY_DURATION:
1041         case MTP_PROPERTY_AUDIO_WAVE_CODEC:
1042             result = new MtpProperty(property, MTP_TYPE_UINT32);
1043             break;
1044         case MTP_PROPERTY_OBJECT_SIZE:
1045             result = new MtpProperty(property, MTP_TYPE_UINT64);
1046             break;
1047         case MTP_PROPERTY_PERSISTENT_UID:
1048             result = new MtpProperty(property, MTP_TYPE_UINT128);
1049             break;
1050         case MTP_PROPERTY_NAME:
1051         case MTP_PROPERTY_DISPLAY_NAME:
1052         case MTP_PROPERTY_ARTIST:
1053         case MTP_PROPERTY_ALBUM_NAME:
1054         case MTP_PROPERTY_ALBUM_ARTIST:
1055         case MTP_PROPERTY_GENRE:
1056         case MTP_PROPERTY_COMPOSER:
1057         case MTP_PROPERTY_DESCRIPTION:
1058             result = new MtpProperty(property, MTP_TYPE_STR);
1059             break;
1060         case MTP_PROPERTY_DATE_MODIFIED:
1061         case MTP_PROPERTY_DATE_ADDED:
1062         case MTP_PROPERTY_ORIGINAL_RELEASE_DATE:
1063             result = new MtpProperty(property, MTP_TYPE_STR);
1064             result->setFormDateTime();
1065             break;
1066         case MTP_PROPERTY_OBJECT_FILE_NAME:
1067             // We allow renaming files and folders
1068             result = new MtpProperty(property, MTP_TYPE_STR, true);
1069             break;
1070         case MTP_PROPERTY_BITRATE_TYPE:
1071              result = new MtpProperty(property, MTP_TYPE_UINT16);
1072             result->setFormEnum(bitrateEnum, sizeof(bitrateEnum)/sizeof(bitrateEnum[0]));
1073             break;
1074         case MTP_PROPERTY_AUDIO_BITRATE:
1075             result = new MtpProperty(property, MTP_TYPE_UINT32);
1076             result->setFormRange(1, 1536000, 1);
1077             break;
1078         case MTP_PROPERTY_NUMBER_OF_CHANNELS:
1079             result = new MtpProperty(property, MTP_TYPE_UINT16);
1080             result->setFormEnum(channelEnum, sizeof(channelEnum)/sizeof(channelEnum[0]));
1081             break;
1082         case MTP_PROPERTY_SAMPLE_RATE:
1083             result = new MtpProperty(property, MTP_TYPE_UINT32);
1084             result->setFormRange(8000, 48000, 1);
1085             break;
1086     }
1087 
1088     return result;
1089 }
1090 
getDevicePropertyDesc(MtpDeviceProperty property)1091 MtpProperty* MyMtpDatabase::getDevicePropertyDesc(MtpDeviceProperty property) {
1092     JNIEnv* env = AndroidRuntime::getJNIEnv();
1093     MtpProperty* result = NULL;
1094     bool writable = false;
1095 
1096     switch (property) {
1097         case MTP_DEVICE_PROPERTY_SYNCHRONIZATION_PARTNER:
1098         case MTP_DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME:
1099             writable = true;
1100             // fall through
1101         case MTP_DEVICE_PROPERTY_IMAGE_SIZE: {
1102             result = new MtpProperty(property, MTP_TYPE_STR, writable);
1103 
1104             // get current value
1105             jint ret = env->CallIntMethod(mDatabase, method_getDeviceProperty,
1106                         (jint)property, mLongBuffer, mStringBuffer);
1107             if (ret == MTP_RESPONSE_OK) {
1108                 jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
1109                 result->setCurrentValue(str);
1110                 // for read-only properties it is safe to assume current value is default value
1111                 if (!writable)
1112                     result->setDefaultValue(str);
1113                 env->ReleaseCharArrayElements(mStringBuffer, str, 0);
1114             } else {
1115                 ALOGE("unable to read device property, response: %04X", ret);
1116             }
1117             break;
1118         }
1119         case MTP_DEVICE_PROPERTY_BATTERY_LEVEL:
1120             result = new MtpProperty(property, MTP_TYPE_UINT8);
1121             result->setFormRange(0, env->GetIntField(mDatabase, field_batteryScale), 1);
1122             result->mCurrentValue.u.u8 = (uint8_t)env->GetIntField(mDatabase, field_batteryLevel);
1123             break;
1124     }
1125 
1126     checkAndClearExceptionFromCallback(env, __FUNCTION__);
1127     return result;
1128 }
1129 
sessionStarted()1130 void MyMtpDatabase::sessionStarted() {
1131     JNIEnv* env = AndroidRuntime::getJNIEnv();
1132     env->CallVoidMethod(mDatabase, method_sessionStarted);
1133     checkAndClearExceptionFromCallback(env, __FUNCTION__);
1134 }
1135 
sessionEnded()1136 void MyMtpDatabase::sessionEnded() {
1137     JNIEnv* env = AndroidRuntime::getJNIEnv();
1138     env->CallVoidMethod(mDatabase, method_sessionEnded);
1139     checkAndClearExceptionFromCallback(env, __FUNCTION__);
1140 }
1141 
1142 // ----------------------------------------------------------------------------
1143 
1144 static void
android_mtp_MtpDatabase_setup(JNIEnv * env,jobject thiz)1145 android_mtp_MtpDatabase_setup(JNIEnv *env, jobject thiz)
1146 {
1147     MyMtpDatabase* database = new MyMtpDatabase(env, thiz);
1148     env->SetLongField(thiz, field_context, (jlong)database);
1149     checkAndClearExceptionFromCallback(env, __FUNCTION__);
1150 }
1151 
1152 static void
android_mtp_MtpDatabase_finalize(JNIEnv * env,jobject thiz)1153 android_mtp_MtpDatabase_finalize(JNIEnv *env, jobject thiz)
1154 {
1155     MyMtpDatabase* database = (MyMtpDatabase *)env->GetLongField(thiz, field_context);
1156     database->cleanup(env);
1157     delete database;
1158     env->SetLongField(thiz, field_context, 0);
1159     checkAndClearExceptionFromCallback(env, __FUNCTION__);
1160 }
1161 
1162 static jstring
android_mtp_MtpPropertyGroup_format_date_time(JNIEnv * env,jobject,jlong seconds)1163 android_mtp_MtpPropertyGroup_format_date_time(JNIEnv *env, jobject /*thiz*/, jlong seconds)
1164 {
1165     char    date[20];
1166     formatDateTime(seconds, date, sizeof(date));
1167     return env->NewStringUTF(date);
1168 }
1169 
1170 // ----------------------------------------------------------------------------
1171 
1172 static JNINativeMethod gMtpDatabaseMethods[] = {
1173     {"native_setup",            "()V",  (void *)android_mtp_MtpDatabase_setup},
1174     {"native_finalize",         "()V",  (void *)android_mtp_MtpDatabase_finalize},
1175 };
1176 
1177 static JNINativeMethod gMtpPropertyGroupMethods[] = {
1178     {"format_date_time",        "(J)Ljava/lang/String;",
1179                                         (void *)android_mtp_MtpPropertyGroup_format_date_time},
1180 };
1181 
1182 static const char* const kClassPathName = "android/mtp/MtpDatabase";
1183 
register_android_mtp_MtpDatabase(JNIEnv * env)1184 int register_android_mtp_MtpDatabase(JNIEnv *env)
1185 {
1186     jclass clazz;
1187 
1188     clazz = env->FindClass("android/mtp/MtpDatabase");
1189     if (clazz == NULL) {
1190         ALOGE("Can't find android/mtp/MtpDatabase");
1191         return -1;
1192     }
1193     method_beginSendObject = env->GetMethodID(clazz, "beginSendObject", "(Ljava/lang/String;IIIJJ)I");
1194     if (method_beginSendObject == NULL) {
1195         ALOGE("Can't find beginSendObject");
1196         return -1;
1197     }
1198     method_endSendObject = env->GetMethodID(clazz, "endSendObject", "(Ljava/lang/String;IIZ)V");
1199     if (method_endSendObject == NULL) {
1200         ALOGE("Can't find endSendObject");
1201         return -1;
1202     }
1203     method_getObjectList = env->GetMethodID(clazz, "getObjectList", "(III)[I");
1204     if (method_getObjectList == NULL) {
1205         ALOGE("Can't find getObjectList");
1206         return -1;
1207     }
1208     method_getNumObjects = env->GetMethodID(clazz, "getNumObjects", "(III)I");
1209     if (method_getNumObjects == NULL) {
1210         ALOGE("Can't find getNumObjects");
1211         return -1;
1212     }
1213     method_getSupportedPlaybackFormats = env->GetMethodID(clazz, "getSupportedPlaybackFormats", "()[I");
1214     if (method_getSupportedPlaybackFormats == NULL) {
1215         ALOGE("Can't find getSupportedPlaybackFormats");
1216         return -1;
1217     }
1218     method_getSupportedCaptureFormats = env->GetMethodID(clazz, "getSupportedCaptureFormats", "()[I");
1219     if (method_getSupportedCaptureFormats == NULL) {
1220         ALOGE("Can't find getSupportedCaptureFormats");
1221         return -1;
1222     }
1223     method_getSupportedObjectProperties = env->GetMethodID(clazz, "getSupportedObjectProperties", "(I)[I");
1224     if (method_getSupportedObjectProperties == NULL) {
1225         ALOGE("Can't find getSupportedObjectProperties");
1226         return -1;
1227     }
1228     method_getSupportedDeviceProperties = env->GetMethodID(clazz, "getSupportedDeviceProperties", "()[I");
1229     if (method_getSupportedDeviceProperties == NULL) {
1230         ALOGE("Can't find getSupportedDeviceProperties");
1231         return -1;
1232     }
1233     method_setObjectProperty = env->GetMethodID(clazz, "setObjectProperty", "(IIJLjava/lang/String;)I");
1234     if (method_setObjectProperty == NULL) {
1235         ALOGE("Can't find setObjectProperty");
1236         return -1;
1237     }
1238     method_getDeviceProperty = env->GetMethodID(clazz, "getDeviceProperty", "(I[J[C)I");
1239     if (method_getDeviceProperty == NULL) {
1240         ALOGE("Can't find getDeviceProperty");
1241         return -1;
1242     }
1243     method_setDeviceProperty = env->GetMethodID(clazz, "setDeviceProperty", "(IJLjava/lang/String;)I");
1244     if (method_setDeviceProperty == NULL) {
1245         ALOGE("Can't find setDeviceProperty");
1246         return -1;
1247     }
1248     method_getObjectPropertyList = env->GetMethodID(clazz, "getObjectPropertyList",
1249             "(JIJII)Landroid/mtp/MtpPropertyList;");
1250     if (method_getObjectPropertyList == NULL) {
1251         ALOGE("Can't find getObjectPropertyList");
1252         return -1;
1253     }
1254     method_getObjectInfo = env->GetMethodID(clazz, "getObjectInfo", "(I[I[C[J)Z");
1255     if (method_getObjectInfo == NULL) {
1256         ALOGE("Can't find getObjectInfo");
1257         return -1;
1258     }
1259     method_getObjectFilePath = env->GetMethodID(clazz, "getObjectFilePath", "(I[C[J)I");
1260     if (method_getObjectFilePath == NULL) {
1261         ALOGE("Can't find getObjectFilePath");
1262         return -1;
1263     }
1264     method_deleteFile = env->GetMethodID(clazz, "deleteFile", "(I)I");
1265     if (method_deleteFile == NULL) {
1266         ALOGE("Can't find deleteFile");
1267         return -1;
1268     }
1269     method_getObjectReferences = env->GetMethodID(clazz, "getObjectReferences", "(I)[I");
1270     if (method_getObjectReferences == NULL) {
1271         ALOGE("Can't find getObjectReferences");
1272         return -1;
1273     }
1274     method_setObjectReferences = env->GetMethodID(clazz, "setObjectReferences", "(I[I)I");
1275     if (method_setObjectReferences == NULL) {
1276         ALOGE("Can't find setObjectReferences");
1277         return -1;
1278     }
1279     method_sessionStarted = env->GetMethodID(clazz, "sessionStarted", "()V");
1280     if (method_sessionStarted == NULL) {
1281         ALOGE("Can't find sessionStarted");
1282         return -1;
1283     }
1284     method_sessionEnded = env->GetMethodID(clazz, "sessionEnded", "()V");
1285     if (method_sessionEnded == NULL) {
1286         ALOGE("Can't find sessionEnded");
1287         return -1;
1288     }
1289 
1290     field_context = env->GetFieldID(clazz, "mNativeContext", "J");
1291     if (field_context == NULL) {
1292         ALOGE("Can't find MtpDatabase.mNativeContext");
1293         return -1;
1294     }
1295     field_batteryLevel = env->GetFieldID(clazz, "mBatteryLevel", "I");
1296     if (field_batteryLevel == NULL) {
1297         ALOGE("Can't find MtpDatabase.mBatteryLevel");
1298         return -1;
1299     }
1300     field_batteryScale = env->GetFieldID(clazz, "mBatteryScale", "I");
1301     if (field_batteryScale == NULL) {
1302         ALOGE("Can't find MtpDatabase.mBatteryScale");
1303         return -1;
1304     }
1305 
1306     // now set up fields for MtpPropertyList class
1307     clazz = env->FindClass("android/mtp/MtpPropertyList");
1308     if (clazz == NULL) {
1309         ALOGE("Can't find android/mtp/MtpPropertyList");
1310         return -1;
1311     }
1312     field_mCount = env->GetFieldID(clazz, "mCount", "I");
1313     if (field_mCount == NULL) {
1314         ALOGE("Can't find MtpPropertyList.mCount");
1315         return -1;
1316     }
1317     field_mResult = env->GetFieldID(clazz, "mResult", "I");
1318     if (field_mResult == NULL) {
1319         ALOGE("Can't find MtpPropertyList.mResult");
1320         return -1;
1321     }
1322     field_mObjectHandles = env->GetFieldID(clazz, "mObjectHandles", "[I");
1323     if (field_mObjectHandles == NULL) {
1324         ALOGE("Can't find MtpPropertyList.mObjectHandles");
1325         return -1;
1326     }
1327     field_mPropertyCodes = env->GetFieldID(clazz, "mPropertyCodes", "[I");
1328     if (field_mPropertyCodes == NULL) {
1329         ALOGE("Can't find MtpPropertyList.mPropertyCodes");
1330         return -1;
1331     }
1332     field_mDataTypes = env->GetFieldID(clazz, "mDataTypes", "[I");
1333     if (field_mDataTypes == NULL) {
1334         ALOGE("Can't find MtpPropertyList.mDataTypes");
1335         return -1;
1336     }
1337     field_mLongValues = env->GetFieldID(clazz, "mLongValues", "[J");
1338     if (field_mLongValues == NULL) {
1339         ALOGE("Can't find MtpPropertyList.mLongValues");
1340         return -1;
1341     }
1342     field_mStringValues = env->GetFieldID(clazz, "mStringValues", "[Ljava/lang/String;");
1343     if (field_mStringValues == NULL) {
1344         ALOGE("Can't find MtpPropertyList.mStringValues");
1345         return -1;
1346     }
1347 
1348     if (AndroidRuntime::registerNativeMethods(env,
1349                 "android/mtp/MtpDatabase", gMtpDatabaseMethods, NELEM(gMtpDatabaseMethods)))
1350         return -1;
1351 
1352     return AndroidRuntime::registerNativeMethods(env,
1353                 "android/mtp/MtpPropertyGroup", gMtpPropertyGroupMethods, NELEM(gMtpPropertyGroupMethods));
1354 }
1355