android_mtp_MtpDatabase.cpp revision 0937eed32fbe780182cb0349ac29680add7e492c 
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 <stdio.h>
21#include <assert.h>
22#include <limits.h>
23#include <unistd.h>
24#include <fcntl.h>
25
26#include "jni.h"
27#include "JNIHelp.h"
28#include "android_runtime/AndroidRuntime.h"
29#include "android_runtime/Log.h"
30
31#include "MtpDatabase.h"
32#include "MtpDataPacket.h"
33#include "MtpObjectInfo.h"
34#include "MtpProperty.h"
35#include "MtpStringBuffer.h"
36#include "MtpUtils.h"
37#include "mtp.h"
38
39extern "C" {
40#include "libexif/exif-content.h"
41#include "libexif/exif-data.h"
42#include "libexif/exif-tag.h"
43#include "libexif/exif-utils.h"
44}
45
46using namespace android;
47
48// ----------------------------------------------------------------------------
49
50static jmethodID method_beginSendObject;
51static jmethodID method_endSendObject;
52static jmethodID method_getObjectList;
53static jmethodID method_getNumObjects;
54static jmethodID method_getSupportedPlaybackFormats;
55static jmethodID method_getSupportedCaptureFormats;
56static jmethodID method_getSupportedObjectProperties;
57static jmethodID method_getSupportedDeviceProperties;
58static jmethodID method_setObjectProperty;
59static jmethodID method_getDeviceProperty;
60static jmethodID method_setDeviceProperty;
61static jmethodID method_getObjectPropertyList;
62static jmethodID method_getObjectInfo;
63static jmethodID method_getObjectFilePath;
64static jmethodID method_deleteFile;
65static jmethodID method_getObjectReferences;
66static jmethodID method_setObjectReferences;
67static jmethodID method_sessionStarted;
68static jmethodID method_sessionEnded;
69
70static jfieldID field_context;
71
72// MtpPropertyList fields
73static jfieldID field_mCount;
74static jfieldID field_mResult;
75static jfieldID field_mObjectHandles;
76static jfieldID field_mPropertyCodes;
77static jfieldID field_mDataTypes;
78static jfieldID field_mLongValues;
79static jfieldID field_mStringValues;
80
81
82MtpDatabase* getMtpDatabase(JNIEnv *env, jobject database) {
83    return (MtpDatabase *)env->GetLongField(database, field_context);
84}
85
86// ----------------------------------------------------------------------------
87
88class MyMtpDatabase : public MtpDatabase {
89private:
90    jobject         mDatabase;
91    jintArray       mIntBuffer;
92    jlongArray      mLongBuffer;
93    jcharArray      mStringBuffer;
94
95public:
96                                    MyMtpDatabase(JNIEnv *env, jobject client);
97    virtual                         ~MyMtpDatabase();
98    void                            cleanup(JNIEnv *env);
99
100    virtual MtpObjectHandle         beginSendObject(const char* path,
101                                            MtpObjectFormat format,
102                                            MtpObjectHandle parent,
103                                            MtpStorageID storage,
104                                            uint64_t size,
105                                            time_t modified);
106
107    virtual void                    endSendObject(const char* path,
108                                            MtpObjectHandle handle,
109                                            MtpObjectFormat format,
110                                            bool succeeded);
111
112    virtual MtpObjectHandleList*    getObjectList(MtpStorageID storageID,
113                                    MtpObjectFormat format,
114                                    MtpObjectHandle parent);
115
116    virtual int                     getNumObjects(MtpStorageID storageID,
117                                            MtpObjectFormat format,
118                                            MtpObjectHandle parent);
119
120    // callee should delete[] the results from these
121    // results can be NULL
122    virtual MtpObjectFormatList*    getSupportedPlaybackFormats();
123    virtual MtpObjectFormatList*    getSupportedCaptureFormats();
124    virtual MtpObjectPropertyList*  getSupportedObjectProperties(MtpObjectFormat format);
125    virtual MtpDevicePropertyList*  getSupportedDeviceProperties();
126
127    virtual MtpResponseCode         getObjectPropertyValue(MtpObjectHandle handle,
128                                            MtpObjectProperty property,
129                                            MtpDataPacket& packet);
130
131    virtual MtpResponseCode         setObjectPropertyValue(MtpObjectHandle handle,
132                                            MtpObjectProperty property,
133                                            MtpDataPacket& packet);
134
135    virtual MtpResponseCode         getDevicePropertyValue(MtpDeviceProperty property,
136                                            MtpDataPacket& packet);
137
138    virtual MtpResponseCode         setDevicePropertyValue(MtpDeviceProperty property,
139                                            MtpDataPacket& packet);
140
141    virtual MtpResponseCode         resetDeviceProperty(MtpDeviceProperty property);
142
143    virtual MtpResponseCode         getObjectPropertyList(MtpObjectHandle handle,
144                                            uint32_t format, uint32_t property,
145                                            int groupCode, int depth,
146                                            MtpDataPacket& packet);
147
148    virtual MtpResponseCode         getObjectInfo(MtpObjectHandle handle,
149                                            MtpObjectInfo& info);
150
151    virtual void*                   getThumbnail(MtpObjectHandle handle, size_t& outThumbSize);
152
153    virtual MtpResponseCode         getObjectFilePath(MtpObjectHandle handle,
154                                            MtpString& outFilePath,
155                                            int64_t& outFileLength,
156                                            MtpObjectFormat& outFormat);
157    virtual MtpResponseCode         deleteFile(MtpObjectHandle handle);
158
159    bool                            getObjectPropertyInfo(MtpObjectProperty property, int& type);
160    bool                            getDevicePropertyInfo(MtpDeviceProperty property, int& type);
161
162    virtual MtpObjectHandleList*    getObjectReferences(MtpObjectHandle handle);
163
164    virtual MtpResponseCode         setObjectReferences(MtpObjectHandle handle,
165                                            MtpObjectHandleList* references);
166
167    virtual MtpProperty*            getObjectPropertyDesc(MtpObjectProperty property,
168                                            MtpObjectFormat format);
169
170    virtual MtpProperty*            getDevicePropertyDesc(MtpDeviceProperty property);
171
172    virtual void                    sessionStarted();
173
174    virtual void                    sessionEnded();
175};
176
177// ----------------------------------------------------------------------------
178
179static void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
180    if (env->ExceptionCheck()) {
181        ALOGE("An exception was thrown by callback '%s'.", methodName);
182        LOGE_EX(env);
183        env->ExceptionClear();
184    }
185}
186
187// ----------------------------------------------------------------------------
188
189MyMtpDatabase::MyMtpDatabase(JNIEnv *env, jobject client)
190    :   mDatabase(env->NewGlobalRef(client)),
191        mIntBuffer(NULL),
192        mLongBuffer(NULL),
193        mStringBuffer(NULL)
194{
195    // create buffers for out arguments
196    // we don't need to be thread-safe so this is OK
197    jintArray intArray = env->NewIntArray(3);
198    if (!intArray) {
199        return; // Already threw.
200    }
201    mIntBuffer = (jintArray)env->NewGlobalRef(intArray);
202    jlongArray longArray = env->NewLongArray(2);
203    if (!longArray) {
204        return; // Already threw.
205    }
206    mLongBuffer = (jlongArray)env->NewGlobalRef(longArray);
207    jcharArray charArray = env->NewCharArray(256);
208    if (!charArray) {
209        return; // Already threw.
210    }
211    mStringBuffer = (jcharArray)env->NewGlobalRef(charArray);
212}
213
214void MyMtpDatabase::cleanup(JNIEnv *env) {
215    env->DeleteGlobalRef(mDatabase);
216    env->DeleteGlobalRef(mIntBuffer);
217    env->DeleteGlobalRef(mLongBuffer);
218    env->DeleteGlobalRef(mStringBuffer);
219}
220
221MyMtpDatabase::~MyMtpDatabase() {
222}
223
224MtpObjectHandle MyMtpDatabase::beginSendObject(const char* path,
225                                            MtpObjectFormat format,
226                                            MtpObjectHandle parent,
227                                            MtpStorageID storage,
228                                            uint64_t size,
229                                            time_t modified) {
230    JNIEnv* env = AndroidRuntime::getJNIEnv();
231    jstring pathStr = env->NewStringUTF(path);
232    MtpObjectHandle result = env->CallIntMethod(mDatabase, method_beginSendObject,
233            pathStr, (jint)format, (jint)parent, (jint)storage,
234            (jlong)size, (jlong)modified);
235
236    if (pathStr)
237        env->DeleteLocalRef(pathStr);
238    checkAndClearExceptionFromCallback(env, __FUNCTION__);
239    return result;
240}
241
242void MyMtpDatabase::endSendObject(const char* path, MtpObjectHandle handle,
243                                MtpObjectFormat format, bool succeeded) {
244    JNIEnv* env = AndroidRuntime::getJNIEnv();
245    jstring pathStr = env->NewStringUTF(path);
246    env->CallVoidMethod(mDatabase, method_endSendObject, pathStr,
247                        (jint)handle, (jint)format, (jboolean)succeeded);
248
249    if (pathStr)
250        env->DeleteLocalRef(pathStr);
251    checkAndClearExceptionFromCallback(env, __FUNCTION__);
252}
253
254MtpObjectHandleList* MyMtpDatabase::getObjectList(MtpStorageID storageID,
255                                    MtpObjectFormat format,
256                                    MtpObjectHandle parent) {
257    JNIEnv* env = AndroidRuntime::getJNIEnv();
258    jintArray array = (jintArray)env->CallObjectMethod(mDatabase, method_getObjectList,
259                (jint)storageID, (jint)format, (jint)parent);
260    if (!array)
261        return NULL;
262    MtpObjectHandleList* list = new MtpObjectHandleList();
263    jint* handles = env->GetIntArrayElements(array, 0);
264    jsize length = env->GetArrayLength(array);
265    for (int i = 0; i < length; i++)
266        list->push(handles[i]);
267    env->ReleaseIntArrayElements(array, handles, 0);
268    env->DeleteLocalRef(array);
269
270    checkAndClearExceptionFromCallback(env, __FUNCTION__);
271    return list;
272}
273
274int MyMtpDatabase::getNumObjects(MtpStorageID storageID,
275                                MtpObjectFormat format,
276                                MtpObjectHandle parent) {
277    JNIEnv* env = AndroidRuntime::getJNIEnv();
278    int result = env->CallIntMethod(mDatabase, method_getNumObjects,
279                (jint)storageID, (jint)format, (jint)parent);
280
281    checkAndClearExceptionFromCallback(env, __FUNCTION__);
282    return result;
283}
284
285MtpObjectFormatList* MyMtpDatabase::getSupportedPlaybackFormats() {
286    JNIEnv* env = AndroidRuntime::getJNIEnv();
287    jintArray array = (jintArray)env->CallObjectMethod(mDatabase,
288            method_getSupportedPlaybackFormats);
289    if (!array)
290        return NULL;
291    MtpObjectFormatList* list = new MtpObjectFormatList();
292    jint* formats = env->GetIntArrayElements(array, 0);
293    jsize length = env->GetArrayLength(array);
294    for (int i = 0; i < length; i++)
295        list->push(formats[i]);
296    env->ReleaseIntArrayElements(array, formats, 0);
297    env->DeleteLocalRef(array);
298
299    checkAndClearExceptionFromCallback(env, __FUNCTION__);
300    return list;
301}
302
303MtpObjectFormatList* MyMtpDatabase::getSupportedCaptureFormats() {
304    JNIEnv* env = AndroidRuntime::getJNIEnv();
305    jintArray array = (jintArray)env->CallObjectMethod(mDatabase,
306            method_getSupportedCaptureFormats);
307    if (!array)
308        return NULL;
309    MtpObjectFormatList* list = new MtpObjectFormatList();
310    jint* formats = env->GetIntArrayElements(array, 0);
311    jsize length = env->GetArrayLength(array);
312    for (int i = 0; i < length; i++)
313        list->push(formats[i]);
314    env->ReleaseIntArrayElements(array, formats, 0);
315    env->DeleteLocalRef(array);
316
317    checkAndClearExceptionFromCallback(env, __FUNCTION__);
318    return list;
319}
320
321MtpObjectPropertyList* MyMtpDatabase::getSupportedObjectProperties(MtpObjectFormat format) {
322    JNIEnv* env = AndroidRuntime::getJNIEnv();
323    jintArray array = (jintArray)env->CallObjectMethod(mDatabase,
324            method_getSupportedObjectProperties, (jint)format);
325    if (!array)
326        return NULL;
327    MtpObjectPropertyList* list = new MtpObjectPropertyList();
328    jint* properties = env->GetIntArrayElements(array, 0);
329    jsize length = env->GetArrayLength(array);
330    for (int i = 0; i < length; i++)
331        list->push(properties[i]);
332    env->ReleaseIntArrayElements(array, properties, 0);
333    env->DeleteLocalRef(array);
334
335    checkAndClearExceptionFromCallback(env, __FUNCTION__);
336    return list;
337}
338
339MtpDevicePropertyList* MyMtpDatabase::getSupportedDeviceProperties() {
340    JNIEnv* env = AndroidRuntime::getJNIEnv();
341    jintArray array = (jintArray)env->CallObjectMethod(mDatabase,
342            method_getSupportedDeviceProperties);
343    if (!array)
344        return NULL;
345    MtpDevicePropertyList* list = new MtpDevicePropertyList();
346    jint* properties = env->GetIntArrayElements(array, 0);
347    jsize length = env->GetArrayLength(array);
348    for (int i = 0; i < length; i++)
349        list->push(properties[i]);
350    env->ReleaseIntArrayElements(array, properties, 0);
351    env->DeleteLocalRef(array);
352
353    checkAndClearExceptionFromCallback(env, __FUNCTION__);
354    return list;
355}
356
357MtpResponseCode MyMtpDatabase::getObjectPropertyValue(MtpObjectHandle handle,
358                                            MtpObjectProperty property,
359                                            MtpDataPacket& packet) {
360    JNIEnv* env = AndroidRuntime::getJNIEnv();
361    jobject list = env->CallObjectMethod(mDatabase, method_getObjectPropertyList,
362                (jlong)handle, 0, (jlong)property, 0, 0);
363    MtpResponseCode result = env->GetIntField(list, field_mResult);
364    int count = env->GetIntField(list, field_mCount);
365    if (result == MTP_RESPONSE_OK && count != 1)
366        result = MTP_RESPONSE_GENERAL_ERROR;
367
368    if (result == MTP_RESPONSE_OK) {
369        jintArray objectHandlesArray = (jintArray)env->GetObjectField(list, field_mObjectHandles);
370        jintArray propertyCodesArray = (jintArray)env->GetObjectField(list, field_mPropertyCodes);
371        jintArray dataTypesArray = (jintArray)env->GetObjectField(list, field_mDataTypes);
372        jlongArray longValuesArray = (jlongArray)env->GetObjectField(list, field_mLongValues);
373        jobjectArray stringValuesArray = (jobjectArray)env->GetObjectField(list, field_mStringValues);
374
375        jint* objectHandles = env->GetIntArrayElements(objectHandlesArray, 0);
376        jint* propertyCodes = env->GetIntArrayElements(propertyCodesArray, 0);
377        jint* dataTypes = env->GetIntArrayElements(dataTypesArray, 0);
378        jlong* longValues = (longValuesArray ? env->GetLongArrayElements(longValuesArray, 0) : NULL);
379
380        int type = dataTypes[0];
381        jlong longValue = (longValues ? longValues[0] : 0);
382
383        // special case date properties, which are strings to MTP
384        // but stored internally as a uint64
385        if (property == MTP_PROPERTY_DATE_MODIFIED || property == MTP_PROPERTY_DATE_ADDED) {
386            char    date[20];
387            formatDateTime(longValue, date, sizeof(date));
388            packet.putString(date);
389            goto out;
390        }
391        // release date is stored internally as just the year
392        if (property == MTP_PROPERTY_ORIGINAL_RELEASE_DATE) {
393            char    date[20];
394            snprintf(date, sizeof(date), "%04lld0101T000000", longValue);
395            packet.putString(date);
396            goto out;
397        }
398
399        switch (type) {
400            case MTP_TYPE_INT8:
401                packet.putInt8(longValue);
402                break;
403            case MTP_TYPE_UINT8:
404                packet.putUInt8(longValue);
405                break;
406            case MTP_TYPE_INT16:
407                packet.putInt16(longValue);
408                break;
409            case MTP_TYPE_UINT16:
410                packet.putUInt16(longValue);
411                break;
412            case MTP_TYPE_INT32:
413                packet.putInt32(longValue);
414                break;
415            case MTP_TYPE_UINT32:
416                packet.putUInt32(longValue);
417                break;
418            case MTP_TYPE_INT64:
419                packet.putInt64(longValue);
420                break;
421            case MTP_TYPE_UINT64:
422                packet.putUInt64(longValue);
423                break;
424            case MTP_TYPE_INT128:
425                packet.putInt128(longValue);
426                break;
427            case MTP_TYPE_UINT128:
428                packet.putInt128(longValue);
429                break;
430            case MTP_TYPE_STR:
431            {
432                jstring stringValue = (jstring)env->GetObjectArrayElement(stringValuesArray, 0);
433                if (stringValue) {
434                    const char* str = env->GetStringUTFChars(stringValue, NULL);
435                    if (str == NULL) {
436                        return MTP_RESPONSE_GENERAL_ERROR;
437                    }
438                    packet.putString(str);
439                    env->ReleaseStringUTFChars(stringValue, str);
440                } else {
441                    packet.putEmptyString();
442                }
443                break;
444             }
445            default:
446                ALOGE("unsupported type in getObjectPropertyValue\n");
447                result = MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT;
448        }
449out:
450        env->ReleaseIntArrayElements(objectHandlesArray, objectHandles, 0);
451        env->ReleaseIntArrayElements(propertyCodesArray, propertyCodes, 0);
452        env->ReleaseIntArrayElements(dataTypesArray, dataTypes, 0);
453        if (longValues)
454            env->ReleaseLongArrayElements(longValuesArray, longValues, 0);
455
456        env->DeleteLocalRef(objectHandlesArray);
457        env->DeleteLocalRef(propertyCodesArray);
458        env->DeleteLocalRef(dataTypesArray);
459        if (longValuesArray)
460            env->DeleteLocalRef(longValuesArray);
461        if (stringValuesArray)
462            env->DeleteLocalRef(stringValuesArray);
463    }
464
465    env->DeleteLocalRef(list);
466    checkAndClearExceptionFromCallback(env, __FUNCTION__);
467    return result;
468}
469
470MtpResponseCode MyMtpDatabase::setObjectPropertyValue(MtpObjectHandle handle,
471                                            MtpObjectProperty property,
472                                            MtpDataPacket& packet) {
473    int         type;
474
475    if (!getObjectPropertyInfo(property, type))
476        return MTP_RESPONSE_OBJECT_PROP_NOT_SUPPORTED;
477
478    JNIEnv* env = AndroidRuntime::getJNIEnv();
479    jlong longValue = 0;
480    jstring stringValue = NULL;
481
482    switch (type) {
483        case MTP_TYPE_INT8:
484            longValue = packet.getInt8();
485            break;
486        case MTP_TYPE_UINT8:
487            longValue = packet.getUInt8();
488            break;
489        case MTP_TYPE_INT16:
490            longValue = packet.getInt16();
491            break;
492        case MTP_TYPE_UINT16:
493            longValue = packet.getUInt16();
494            break;
495        case MTP_TYPE_INT32:
496            longValue = packet.getInt32();
497            break;
498        case MTP_TYPE_UINT32:
499            longValue = packet.getUInt32();
500            break;
501        case MTP_TYPE_INT64:
502            longValue = packet.getInt64();
503            break;
504        case MTP_TYPE_UINT64:
505            longValue = packet.getUInt64();
506            break;
507        case MTP_TYPE_STR:
508        {
509            MtpStringBuffer buffer;
510            packet.getString(buffer);
511            stringValue = env->NewStringUTF((const char *)buffer);
512            break;
513         }
514        default:
515            ALOGE("unsupported type in getObjectPropertyValue\n");
516            return MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT;
517    }
518
519    jint result = env->CallIntMethod(mDatabase, method_setObjectProperty,
520                (jint)handle, (jint)property, longValue, stringValue);
521    if (stringValue)
522        env->DeleteLocalRef(stringValue);
523
524    checkAndClearExceptionFromCallback(env, __FUNCTION__);
525    return result;
526}
527
528MtpResponseCode MyMtpDatabase::getDevicePropertyValue(MtpDeviceProperty property,
529                                            MtpDataPacket& packet) {
530    int         type;
531
532    if (!getDevicePropertyInfo(property, type))
533        return MTP_RESPONSE_DEVICE_PROP_NOT_SUPPORTED;
534
535    JNIEnv* env = AndroidRuntime::getJNIEnv();
536    jint result = env->CallIntMethod(mDatabase, method_getDeviceProperty,
537                (jint)property, mLongBuffer, mStringBuffer);
538    if (result != MTP_RESPONSE_OK) {
539        checkAndClearExceptionFromCallback(env, __FUNCTION__);
540        return result;
541    }
542
543    jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0);
544    jlong longValue = longValues[0];
545    env->ReleaseLongArrayElements(mLongBuffer, longValues, 0);
546
547    switch (type) {
548        case MTP_TYPE_INT8:
549            packet.putInt8(longValue);
550            break;
551        case MTP_TYPE_UINT8:
552            packet.putUInt8(longValue);
553            break;
554        case MTP_TYPE_INT16:
555            packet.putInt16(longValue);
556            break;
557        case MTP_TYPE_UINT16:
558            packet.putUInt16(longValue);
559            break;
560        case MTP_TYPE_INT32:
561            packet.putInt32(longValue);
562            break;
563        case MTP_TYPE_UINT32:
564            packet.putUInt32(longValue);
565            break;
566        case MTP_TYPE_INT64:
567            packet.putInt64(longValue);
568            break;
569        case MTP_TYPE_UINT64:
570            packet.putUInt64(longValue);
571            break;
572        case MTP_TYPE_INT128:
573            packet.putInt128(longValue);
574            break;
575        case MTP_TYPE_UINT128:
576            packet.putInt128(longValue);
577            break;
578        case MTP_TYPE_STR:
579        {
580            jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
581            packet.putString(str);
582            env->ReleaseCharArrayElements(mStringBuffer, str, 0);
583            break;
584         }
585        default:
586            ALOGE("unsupported type in getDevicePropertyValue\n");
587            return MTP_RESPONSE_INVALID_DEVICE_PROP_FORMAT;
588    }
589
590    checkAndClearExceptionFromCallback(env, __FUNCTION__);
591    return MTP_RESPONSE_OK;
592}
593
594MtpResponseCode MyMtpDatabase::setDevicePropertyValue(MtpDeviceProperty property,
595                                            MtpDataPacket& packet) {
596    int         type;
597
598    if (!getDevicePropertyInfo(property, type))
599        return MTP_RESPONSE_DEVICE_PROP_NOT_SUPPORTED;
600
601    JNIEnv* env = AndroidRuntime::getJNIEnv();
602    jlong longValue = 0;
603    jstring stringValue = NULL;
604
605    switch (type) {
606        case MTP_TYPE_INT8:
607            longValue = packet.getInt8();
608            break;
609        case MTP_TYPE_UINT8:
610            longValue = packet.getUInt8();
611            break;
612        case MTP_TYPE_INT16:
613            longValue = packet.getInt16();
614            break;
615        case MTP_TYPE_UINT16:
616            longValue = packet.getUInt16();
617            break;
618        case MTP_TYPE_INT32:
619            longValue = packet.getInt32();
620            break;
621        case MTP_TYPE_UINT32:
622            longValue = packet.getUInt32();
623            break;
624        case MTP_TYPE_INT64:
625            longValue = packet.getInt64();
626            break;
627        case MTP_TYPE_UINT64:
628            longValue = packet.getUInt64();
629            break;
630        case MTP_TYPE_STR:
631        {
632            MtpStringBuffer buffer;
633            packet.getString(buffer);
634            stringValue = env->NewStringUTF((const char *)buffer);
635            break;
636         }
637        default:
638            ALOGE("unsupported type in setDevicePropertyValue\n");
639            return MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT;
640    }
641
642    jint result = env->CallIntMethod(mDatabase, method_setDeviceProperty,
643                (jint)property, longValue, stringValue);
644    if (stringValue)
645        env->DeleteLocalRef(stringValue);
646
647    checkAndClearExceptionFromCallback(env, __FUNCTION__);
648    return result;
649}
650
651MtpResponseCode MyMtpDatabase::resetDeviceProperty(MtpDeviceProperty property) {
652    return -1;
653}
654
655MtpResponseCode MyMtpDatabase::getObjectPropertyList(MtpObjectHandle handle,
656                                            uint32_t format, uint32_t property,
657                                            int groupCode, int depth,
658                                            MtpDataPacket& packet) {
659    JNIEnv* env = AndroidRuntime::getJNIEnv();
660    jobject list = env->CallObjectMethod(mDatabase, method_getObjectPropertyList,
661                (jlong)handle, (jint)format, (jlong)property, (jint)groupCode, (jint)depth);
662    checkAndClearExceptionFromCallback(env, __FUNCTION__);
663    if (!list)
664        return MTP_RESPONSE_GENERAL_ERROR;
665    int count = env->GetIntField(list, field_mCount);
666    MtpResponseCode result = env->GetIntField(list, field_mResult);
667
668    packet.putUInt32(count);
669    if (count > 0) {
670        jintArray objectHandlesArray = (jintArray)env->GetObjectField(list, field_mObjectHandles);
671        jintArray propertyCodesArray = (jintArray)env->GetObjectField(list, field_mPropertyCodes);
672        jintArray dataTypesArray = (jintArray)env->GetObjectField(list, field_mDataTypes);
673        jlongArray longValuesArray = (jlongArray)env->GetObjectField(list, field_mLongValues);
674        jobjectArray stringValuesArray = (jobjectArray)env->GetObjectField(list, field_mStringValues);
675
676        jint* objectHandles = env->GetIntArrayElements(objectHandlesArray, 0);
677        jint* propertyCodes = env->GetIntArrayElements(propertyCodesArray, 0);
678        jint* dataTypes = env->GetIntArrayElements(dataTypesArray, 0);
679        jlong* longValues = (longValuesArray ? env->GetLongArrayElements(longValuesArray, 0) : NULL);
680
681        for (int i = 0; i < count; i++) {
682            packet.putUInt32(objectHandles[i]);
683            packet.putUInt16(propertyCodes[i]);
684            int type = dataTypes[i];
685            packet.putUInt16(type);
686
687            switch (type) {
688                case MTP_TYPE_INT8:
689                    packet.putInt8(longValues[i]);
690                    break;
691                case MTP_TYPE_UINT8:
692                    packet.putUInt8(longValues[i]);
693                    break;
694                case MTP_TYPE_INT16:
695                    packet.putInt16(longValues[i]);
696                    break;
697                case MTP_TYPE_UINT16:
698                    packet.putUInt16(longValues[i]);
699                    break;
700                case MTP_TYPE_INT32:
701                    packet.putInt32(longValues[i]);
702                    break;
703                case MTP_TYPE_UINT32:
704                    packet.putUInt32(longValues[i]);
705                    break;
706                case MTP_TYPE_INT64:
707                    packet.putInt64(longValues[i]);
708                    break;
709                case MTP_TYPE_UINT64:
710                    packet.putUInt64(longValues[i]);
711                    break;
712                case MTP_TYPE_INT128:
713                    packet.putInt128(longValues[i]);
714                    break;
715                case MTP_TYPE_UINT128:
716                    packet.putUInt128(longValues[i]);
717                    break;
718                case MTP_TYPE_STR: {
719                    jstring value = (jstring)env->GetObjectArrayElement(stringValuesArray, i);
720                    const char *valueStr = (value ? env->GetStringUTFChars(value, NULL) : NULL);
721                    if (valueStr) {
722                        packet.putString(valueStr);
723                        env->ReleaseStringUTFChars(value, valueStr);
724                    } else {
725                        packet.putEmptyString();
726                    }
727                    env->DeleteLocalRef(value);
728                    break;
729                }
730                default:
731                    ALOGE("bad or unsupported data type in MyMtpDatabase::getObjectPropertyList");
732                    break;
733            }
734        }
735
736        env->ReleaseIntArrayElements(objectHandlesArray, objectHandles, 0);
737        env->ReleaseIntArrayElements(propertyCodesArray, propertyCodes, 0);
738        env->ReleaseIntArrayElements(dataTypesArray, dataTypes, 0);
739        if (longValues)
740            env->ReleaseLongArrayElements(longValuesArray, longValues, 0);
741
742        env->DeleteLocalRef(objectHandlesArray);
743        env->DeleteLocalRef(propertyCodesArray);
744        env->DeleteLocalRef(dataTypesArray);
745        if (longValuesArray)
746            env->DeleteLocalRef(longValuesArray);
747        if (stringValuesArray)
748            env->DeleteLocalRef(stringValuesArray);
749    }
750
751    env->DeleteLocalRef(list);
752    checkAndClearExceptionFromCallback(env, __FUNCTION__);
753    return result;
754}
755
756static void foreachentry(ExifEntry *entry, void *user) {
757    char buf[1024];
758    ALOGI("entry %x, format %d, size %d: %s",
759            entry->tag, entry->format, entry->size, exif_entry_get_value(entry, buf, sizeof(buf)));
760}
761
762static void foreachcontent(ExifContent *content, void *user) {
763    ALOGI("content %d", exif_content_get_ifd(content));
764    exif_content_foreach_entry(content, foreachentry, user);
765}
766
767static long getLongFromExifEntry(ExifEntry *e) {
768    ExifByteOrder o = exif_data_get_byte_order(e->parent->parent);
769    return exif_get_long(e->data, o);
770}
771
772MtpResponseCode MyMtpDatabase::getObjectInfo(MtpObjectHandle handle,
773                                            MtpObjectInfo& info) {
774    char            date[20];
775    MtpString       path;
776    int64_t         length;
777    MtpObjectFormat format;
778
779    MtpResponseCode result = getObjectFilePath(handle, path, length, format);
780    if (result != MTP_RESPONSE_OK) {
781        return result;
782    }
783    info.mCompressedSize = (length > 0xFFFFFFFFLL ? 0xFFFFFFFF : (uint32_t)length);
784
785    JNIEnv* env = AndroidRuntime::getJNIEnv();
786    if (!env->CallBooleanMethod(mDatabase, method_getObjectInfo,
787                (jint)handle, mIntBuffer, mStringBuffer, mLongBuffer)) {
788        return MTP_RESPONSE_INVALID_OBJECT_HANDLE;
789    }
790
791    jint* intValues = env->GetIntArrayElements(mIntBuffer, 0);
792    info.mStorageID = intValues[0];
793    info.mFormat = intValues[1];
794    info.mParent = intValues[2];
795    env->ReleaseIntArrayElements(mIntBuffer, intValues, 0);
796
797    jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0);
798    info.mDateCreated = longValues[0];
799    info.mDateModified = longValues[1];
800    env->ReleaseLongArrayElements(mLongBuffer, longValues, 0);
801
802//    info.mAssociationType = (format == MTP_FORMAT_ASSOCIATION ?
803//                            MTP_ASSOCIATION_TYPE_GENERIC_FOLDER :
804//                            MTP_ASSOCIATION_TYPE_UNDEFINED);
805    info.mAssociationType = MTP_ASSOCIATION_TYPE_UNDEFINED;
806
807    jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
808    MtpString temp(str);
809    info.mName = strdup((const char *)temp);
810    env->ReleaseCharArrayElements(mStringBuffer, str, 0);
811
812    // read EXIF data for thumbnail information
813    if (info.mFormat == MTP_FORMAT_EXIF_JPEG || info.mFormat == MTP_FORMAT_JFIF) {
814
815        ExifData *exifdata = exif_data_new_from_file(path);
816        if (exifdata) {
817            //exif_data_foreach_content(exifdata, foreachcontent, NULL);
818
819            // XXX get this from exif, or parse jpeg header instead?
820            ExifEntry *w = exif_content_get_entry(
821                    exifdata->ifd[EXIF_IFD_EXIF], EXIF_TAG_PIXEL_X_DIMENSION);
822            ExifEntry *h = exif_content_get_entry(
823                    exifdata->ifd[EXIF_IFD_EXIF], EXIF_TAG_PIXEL_Y_DIMENSION);
824            info.mThumbCompressedSize = exifdata->data ? exifdata->size : 0;
825            info.mThumbFormat = MTP_FORMAT_EXIF_JPEG;
826            info.mImagePixWidth = w ? getLongFromExifEntry(w) : 0;
827            info.mImagePixHeight = h ? getLongFromExifEntry(h) : 0;
828            exif_data_unref(exifdata);
829        }
830    }
831
832    checkAndClearExceptionFromCallback(env, __FUNCTION__);
833    return MTP_RESPONSE_OK;
834}
835
836void* MyMtpDatabase::getThumbnail(MtpObjectHandle handle, size_t& outThumbSize) {
837    MtpString path;
838    int64_t length;
839    MtpObjectFormat format;
840    void* result = NULL;
841    outThumbSize = 0;
842
843    if (getObjectFilePath(handle, path, length, format) == MTP_RESPONSE_OK
844            && (format == MTP_FORMAT_EXIF_JPEG || format == MTP_FORMAT_JFIF)) {
845
846        ExifData *exifdata = exif_data_new_from_file(path);
847        if (exifdata) {
848            if (exifdata->data) {
849                result = malloc(exifdata->size);
850                if (result) {
851                    memcpy(result, exifdata->data, exifdata->size);
852                }
853            }
854            exif_data_unref(exifdata);
855        }
856    }
857
858    return result;
859}
860
861MtpResponseCode MyMtpDatabase::getObjectFilePath(MtpObjectHandle handle,
862                                            MtpString& outFilePath,
863                                            int64_t& outFileLength,
864                                            MtpObjectFormat& outFormat) {
865    JNIEnv* env = AndroidRuntime::getJNIEnv();
866    jint result = env->CallIntMethod(mDatabase, method_getObjectFilePath,
867                (jint)handle, mStringBuffer, mLongBuffer);
868    if (result != MTP_RESPONSE_OK) {
869        checkAndClearExceptionFromCallback(env, __FUNCTION__);
870        return result;
871    }
872
873    jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
874    outFilePath.setTo(str, strlen16(str));
875    env->ReleaseCharArrayElements(mStringBuffer, str, 0);
876
877    jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0);
878    outFileLength = longValues[0];
879    outFormat = longValues[1];
880    env->ReleaseLongArrayElements(mLongBuffer, longValues, 0);
881
882    checkAndClearExceptionFromCallback(env, __FUNCTION__);
883    return result;
884}
885
886MtpResponseCode MyMtpDatabase::deleteFile(MtpObjectHandle handle) {
887    JNIEnv* env = AndroidRuntime::getJNIEnv();
888    MtpResponseCode result = env->CallIntMethod(mDatabase, method_deleteFile, (jint)handle);
889
890    checkAndClearExceptionFromCallback(env, __FUNCTION__);
891    return result;
892}
893
894struct PropertyTableEntry {
895    MtpObjectProperty   property;
896    int                 type;
897};
898
899static const PropertyTableEntry   kObjectPropertyTable[] = {
900    {   MTP_PROPERTY_STORAGE_ID,        MTP_TYPE_UINT32     },
901    {   MTP_PROPERTY_OBJECT_FORMAT,     MTP_TYPE_UINT16     },
902    {   MTP_PROPERTY_PROTECTION_STATUS, MTP_TYPE_UINT16     },
903    {   MTP_PROPERTY_OBJECT_SIZE,       MTP_TYPE_UINT64     },
904    {   MTP_PROPERTY_OBJECT_FILE_NAME,  MTP_TYPE_STR        },
905    {   MTP_PROPERTY_DATE_MODIFIED,     MTP_TYPE_STR        },
906    {   MTP_PROPERTY_PARENT_OBJECT,     MTP_TYPE_UINT32     },
907    {   MTP_PROPERTY_PERSISTENT_UID,    MTP_TYPE_UINT128    },
908    {   MTP_PROPERTY_NAME,              MTP_TYPE_STR        },
909    {   MTP_PROPERTY_DISPLAY_NAME,      MTP_TYPE_STR        },
910    {   MTP_PROPERTY_DATE_ADDED,        MTP_TYPE_STR        },
911    {   MTP_PROPERTY_ARTIST,            MTP_TYPE_STR        },
912    {   MTP_PROPERTY_ALBUM_NAME,        MTP_TYPE_STR        },
913    {   MTP_PROPERTY_ALBUM_ARTIST,      MTP_TYPE_STR        },
914    {   MTP_PROPERTY_TRACK,             MTP_TYPE_UINT16     },
915    {   MTP_PROPERTY_ORIGINAL_RELEASE_DATE, MTP_TYPE_STR    },
916    {   MTP_PROPERTY_GENRE,             MTP_TYPE_STR        },
917    {   MTP_PROPERTY_COMPOSER,          MTP_TYPE_STR        },
918    {   MTP_PROPERTY_DURATION,          MTP_TYPE_UINT32     },
919    {   MTP_PROPERTY_DESCRIPTION,       MTP_TYPE_STR        },
920};
921
922static const PropertyTableEntry   kDevicePropertyTable[] = {
923    {   MTP_DEVICE_PROPERTY_SYNCHRONIZATION_PARTNER,    MTP_TYPE_STR },
924    {   MTP_DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME,       MTP_TYPE_STR },
925    {   MTP_DEVICE_PROPERTY_IMAGE_SIZE,                 MTP_TYPE_STR },
926};
927
928bool MyMtpDatabase::getObjectPropertyInfo(MtpObjectProperty property, int& type) {
929    int count = sizeof(kObjectPropertyTable) / sizeof(kObjectPropertyTable[0]);
930    const PropertyTableEntry* entry = kObjectPropertyTable;
931    for (int i = 0; i < count; i++, entry++) {
932        if (entry->property == property) {
933            type = entry->type;
934            return true;
935        }
936    }
937    return false;
938}
939
940bool MyMtpDatabase::getDevicePropertyInfo(MtpDeviceProperty property, int& type) {
941    int count = sizeof(kDevicePropertyTable) / sizeof(kDevicePropertyTable[0]);
942    const PropertyTableEntry* entry = kDevicePropertyTable;
943    for (int i = 0; i < count; i++, entry++) {
944        if (entry->property == property) {
945            type = entry->type;
946            return true;
947        }
948    }
949    return false;
950}
951
952MtpObjectHandleList* MyMtpDatabase::getObjectReferences(MtpObjectHandle handle) {
953    JNIEnv* env = AndroidRuntime::getJNIEnv();
954    jintArray array = (jintArray)env->CallObjectMethod(mDatabase, method_getObjectReferences,
955                (jint)handle);
956    if (!array)
957        return NULL;
958    MtpObjectHandleList* list = new MtpObjectHandleList();
959    jint* handles = env->GetIntArrayElements(array, 0);
960    jsize length = env->GetArrayLength(array);
961    for (int i = 0; i < length; i++)
962        list->push(handles[i]);
963    env->ReleaseIntArrayElements(array, handles, 0);
964    env->DeleteLocalRef(array);
965
966    checkAndClearExceptionFromCallback(env, __FUNCTION__);
967    return list;
968}
969
970MtpResponseCode MyMtpDatabase::setObjectReferences(MtpObjectHandle handle,
971                                                    MtpObjectHandleList* references) {
972    JNIEnv* env = AndroidRuntime::getJNIEnv();
973    int count = references->size();
974    jintArray array = env->NewIntArray(count);
975    if (!array) {
976        ALOGE("out of memory in setObjectReferences");
977        return false;
978    }
979    jint* handles = env->GetIntArrayElements(array, 0);
980     for (int i = 0; i < count; i++)
981        handles[i] = (*references)[i];
982    env->ReleaseIntArrayElements(array, handles, 0);
983    MtpResponseCode result = env->CallIntMethod(mDatabase, method_setObjectReferences,
984                (jint)handle, array);
985    env->DeleteLocalRef(array);
986
987    checkAndClearExceptionFromCallback(env, __FUNCTION__);
988    return result;
989}
990
991MtpProperty* MyMtpDatabase::getObjectPropertyDesc(MtpObjectProperty property,
992                                            MtpObjectFormat format) {
993    MtpProperty* result = NULL;
994    switch (property) {
995        case MTP_PROPERTY_OBJECT_FORMAT:
996            // use format as default value
997            result = new MtpProperty(property, MTP_TYPE_UINT16, false, format);
998            break;
999        case MTP_PROPERTY_PROTECTION_STATUS:
1000        case MTP_PROPERTY_TRACK:
1001            result = new MtpProperty(property, MTP_TYPE_UINT16);
1002            break;
1003        case MTP_PROPERTY_STORAGE_ID:
1004        case MTP_PROPERTY_PARENT_OBJECT:
1005        case MTP_PROPERTY_DURATION:
1006            result = new MtpProperty(property, MTP_TYPE_UINT32);
1007            break;
1008        case MTP_PROPERTY_OBJECT_SIZE:
1009            result = new MtpProperty(property, MTP_TYPE_UINT64);
1010            break;
1011        case MTP_PROPERTY_PERSISTENT_UID:
1012            result = new MtpProperty(property, MTP_TYPE_UINT128);
1013            break;
1014        case MTP_PROPERTY_NAME:
1015        case MTP_PROPERTY_DISPLAY_NAME:
1016        case MTP_PROPERTY_ARTIST:
1017        case MTP_PROPERTY_ALBUM_NAME:
1018        case MTP_PROPERTY_ALBUM_ARTIST:
1019        case MTP_PROPERTY_GENRE:
1020        case MTP_PROPERTY_COMPOSER:
1021        case MTP_PROPERTY_DESCRIPTION:
1022            result = new MtpProperty(property, MTP_TYPE_STR);
1023            break;
1024        case MTP_PROPERTY_DATE_MODIFIED:
1025        case MTP_PROPERTY_DATE_ADDED:
1026        case MTP_PROPERTY_ORIGINAL_RELEASE_DATE:
1027            result = new MtpProperty(property, MTP_TYPE_STR);
1028            result->setFormDateTime();
1029            break;
1030        case MTP_PROPERTY_OBJECT_FILE_NAME:
1031            // We allow renaming files and folders
1032            result = new MtpProperty(property, MTP_TYPE_STR, true);
1033            break;
1034    }
1035
1036    return result;
1037}
1038
1039MtpProperty* MyMtpDatabase::getDevicePropertyDesc(MtpDeviceProperty property) {
1040    JNIEnv* env = AndroidRuntime::getJNIEnv();
1041    MtpProperty* result = NULL;
1042    bool writable = false;
1043
1044    switch (property) {
1045        case MTP_DEVICE_PROPERTY_SYNCHRONIZATION_PARTNER:
1046        case MTP_DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME:
1047            writable = true;
1048            // fall through
1049        case MTP_DEVICE_PROPERTY_IMAGE_SIZE:
1050            result = new MtpProperty(property, MTP_TYPE_STR, writable);
1051
1052            // get current value
1053            jint ret = env->CallIntMethod(mDatabase, method_getDeviceProperty,
1054                        (jint)property, mLongBuffer, mStringBuffer);
1055            if (ret == MTP_RESPONSE_OK) {
1056                jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
1057                result->setCurrentValue(str);
1058                // for read-only properties it is safe to assume current value is default value
1059                if (!writable)
1060                    result->setDefaultValue(str);
1061                env->ReleaseCharArrayElements(mStringBuffer, str, 0);
1062            } else {
1063                ALOGE("unable to read device property, response: %04X", ret);
1064            }
1065            break;
1066    }
1067
1068    checkAndClearExceptionFromCallback(env, __FUNCTION__);
1069    return result;
1070}
1071
1072void MyMtpDatabase::sessionStarted() {
1073    JNIEnv* env = AndroidRuntime::getJNIEnv();
1074    env->CallVoidMethod(mDatabase, method_sessionStarted);
1075    checkAndClearExceptionFromCallback(env, __FUNCTION__);
1076}
1077
1078void MyMtpDatabase::sessionEnded() {
1079    JNIEnv* env = AndroidRuntime::getJNIEnv();
1080    env->CallVoidMethod(mDatabase, method_sessionEnded);
1081    checkAndClearExceptionFromCallback(env, __FUNCTION__);
1082}
1083
1084// ----------------------------------------------------------------------------
1085
1086static void
1087android_mtp_MtpDatabase_setup(JNIEnv *env, jobject thiz)
1088{
1089    MyMtpDatabase* database = new MyMtpDatabase(env, thiz);
1090    env->SetLongField(thiz, field_context, (jlong)database);
1091    checkAndClearExceptionFromCallback(env, __FUNCTION__);
1092}
1093
1094static void
1095android_mtp_MtpDatabase_finalize(JNIEnv *env, jobject thiz)
1096{
1097    MyMtpDatabase* database = (MyMtpDatabase *)env->GetLongField(thiz, field_context);
1098    database->cleanup(env);
1099    delete database;
1100    env->SetLongField(thiz, field_context, 0);
1101    checkAndClearExceptionFromCallback(env, __FUNCTION__);
1102}
1103
1104static jstring
1105android_mtp_MtpPropertyGroup_format_date_time(JNIEnv *env, jobject thiz, jlong seconds)
1106{
1107    char    date[20];
1108    formatDateTime(seconds, date, sizeof(date));
1109    return env->NewStringUTF(date);
1110}
1111
1112// ----------------------------------------------------------------------------
1113
1114static JNINativeMethod gMtpDatabaseMethods[] = {
1115    {"native_setup",            "()V",  (void *)android_mtp_MtpDatabase_setup},
1116    {"native_finalize",         "()V",  (void *)android_mtp_MtpDatabase_finalize},
1117};
1118
1119static JNINativeMethod gMtpPropertyGroupMethods[] = {
1120    {"format_date_time",        "(J)Ljava/lang/String;",
1121                                        (void *)android_mtp_MtpPropertyGroup_format_date_time},
1122};
1123
1124static const char* const kClassPathName = "android/mtp/MtpDatabase";
1125
1126int register_android_mtp_MtpDatabase(JNIEnv *env)
1127{
1128    jclass clazz;
1129
1130    clazz = env->FindClass("android/mtp/MtpDatabase");
1131    if (clazz == NULL) {
1132        ALOGE("Can't find android/mtp/MtpDatabase");
1133        return -1;
1134    }
1135    method_beginSendObject = env->GetMethodID(clazz, "beginSendObject", "(Ljava/lang/String;IIIJJ)I");
1136    if (method_beginSendObject == NULL) {
1137        ALOGE("Can't find beginSendObject");
1138        return -1;
1139    }
1140    method_endSendObject = env->GetMethodID(clazz, "endSendObject", "(Ljava/lang/String;IIZ)V");
1141    if (method_endSendObject == NULL) {
1142        ALOGE("Can't find endSendObject");
1143        return -1;
1144    }
1145    method_getObjectList = env->GetMethodID(clazz, "getObjectList", "(III)[I");
1146    if (method_getObjectList == NULL) {
1147        ALOGE("Can't find getObjectList");
1148        return -1;
1149    }
1150    method_getNumObjects = env->GetMethodID(clazz, "getNumObjects", "(III)I");
1151    if (method_getNumObjects == NULL) {
1152        ALOGE("Can't find getNumObjects");
1153        return -1;
1154    }
1155    method_getSupportedPlaybackFormats = env->GetMethodID(clazz, "getSupportedPlaybackFormats", "()[I");
1156    if (method_getSupportedPlaybackFormats == NULL) {
1157        ALOGE("Can't find getSupportedPlaybackFormats");
1158        return -1;
1159    }
1160    method_getSupportedCaptureFormats = env->GetMethodID(clazz, "getSupportedCaptureFormats", "()[I");
1161    if (method_getSupportedCaptureFormats == NULL) {
1162        ALOGE("Can't find getSupportedCaptureFormats");
1163        return -1;
1164    }
1165    method_getSupportedObjectProperties = env->GetMethodID(clazz, "getSupportedObjectProperties", "(I)[I");
1166    if (method_getSupportedObjectProperties == NULL) {
1167        ALOGE("Can't find getSupportedObjectProperties");
1168        return -1;
1169    }
1170    method_getSupportedDeviceProperties = env->GetMethodID(clazz, "getSupportedDeviceProperties", "()[I");
1171    if (method_getSupportedDeviceProperties == NULL) {
1172        ALOGE("Can't find getSupportedDeviceProperties");
1173        return -1;
1174    }
1175    method_setObjectProperty = env->GetMethodID(clazz, "setObjectProperty", "(IIJLjava/lang/String;)I");
1176    if (method_setObjectProperty == NULL) {
1177        ALOGE("Can't find setObjectProperty");
1178        return -1;
1179    }
1180    method_getDeviceProperty = env->GetMethodID(clazz, "getDeviceProperty", "(I[J[C)I");
1181    if (method_getDeviceProperty == NULL) {
1182        ALOGE("Can't find getDeviceProperty");
1183        return -1;
1184    }
1185    method_setDeviceProperty = env->GetMethodID(clazz, "setDeviceProperty", "(IJLjava/lang/String;)I");
1186    if (method_setDeviceProperty == NULL) {
1187        ALOGE("Can't find setDeviceProperty");
1188        return -1;
1189    }
1190    method_getObjectPropertyList = env->GetMethodID(clazz, "getObjectPropertyList",
1191            "(JIJII)Landroid/mtp/MtpPropertyList;");
1192    if (method_getObjectPropertyList == NULL) {
1193        ALOGE("Can't find getObjectPropertyList");
1194        return -1;
1195    }
1196    method_getObjectInfo = env->GetMethodID(clazz, "getObjectInfo", "(I[I[C[J)Z");
1197    if (method_getObjectInfo == NULL) {
1198        ALOGE("Can't find getObjectInfo");
1199        return -1;
1200    }
1201    method_getObjectFilePath = env->GetMethodID(clazz, "getObjectFilePath", "(I[C[J)I");
1202    if (method_getObjectFilePath == NULL) {
1203        ALOGE("Can't find getObjectFilePath");
1204        return -1;
1205    }
1206    method_deleteFile = env->GetMethodID(clazz, "deleteFile", "(I)I");
1207    if (method_deleteFile == NULL) {
1208        ALOGE("Can't find deleteFile");
1209        return -1;
1210    }
1211    method_getObjectReferences = env->GetMethodID(clazz, "getObjectReferences", "(I)[I");
1212    if (method_getObjectReferences == NULL) {
1213        ALOGE("Can't find getObjectReferences");
1214        return -1;
1215    }
1216    method_setObjectReferences = env->GetMethodID(clazz, "setObjectReferences", "(I[I)I");
1217    if (method_setObjectReferences == NULL) {
1218        ALOGE("Can't find setObjectReferences");
1219        return -1;
1220    }
1221    method_sessionStarted = env->GetMethodID(clazz, "sessionStarted", "()V");
1222    if (method_sessionStarted == NULL) {
1223        ALOGE("Can't find sessionStarted");
1224        return -1;
1225    }
1226    method_sessionEnded = env->GetMethodID(clazz, "sessionEnded", "()V");
1227    if (method_sessionEnded == NULL) {
1228        ALOGE("Can't find sessionEnded");
1229        return -1;
1230    }
1231
1232    field_context = env->GetFieldID(clazz, "mNativeContext", "J");
1233    if (field_context == NULL) {
1234        ALOGE("Can't find MtpDatabase.mNativeContext");
1235        return -1;
1236    }
1237
1238    // now set up fields for MtpPropertyList class
1239    clazz = env->FindClass("android/mtp/MtpPropertyList");
1240    if (clazz == NULL) {
1241        ALOGE("Can't find android/mtp/MtpPropertyList");
1242        return -1;
1243    }
1244    field_mCount = env->GetFieldID(clazz, "mCount", "I");
1245    if (field_mCount == NULL) {
1246        ALOGE("Can't find MtpPropertyList.mCount");
1247        return -1;
1248    }
1249    field_mResult = env->GetFieldID(clazz, "mResult", "I");
1250    if (field_mResult == NULL) {
1251        ALOGE("Can't find MtpPropertyList.mResult");
1252        return -1;
1253    }
1254    field_mObjectHandles = env->GetFieldID(clazz, "mObjectHandles", "[I");
1255    if (field_mObjectHandles == NULL) {
1256        ALOGE("Can't find MtpPropertyList.mObjectHandles");
1257        return -1;
1258    }
1259    field_mPropertyCodes = env->GetFieldID(clazz, "mPropertyCodes", "[I");
1260    if (field_mPropertyCodes == NULL) {
1261        ALOGE("Can't find MtpPropertyList.mPropertyCodes");
1262        return -1;
1263    }
1264    field_mDataTypes = env->GetFieldID(clazz, "mDataTypes", "[I");
1265    if (field_mDataTypes == NULL) {
1266        ALOGE("Can't find MtpPropertyList.mDataTypes");
1267        return -1;
1268    }
1269    field_mLongValues = env->GetFieldID(clazz, "mLongValues", "[J");
1270    if (field_mLongValues == NULL) {
1271        ALOGE("Can't find MtpPropertyList.mLongValues");
1272        return -1;
1273    }
1274    field_mStringValues = env->GetFieldID(clazz, "mStringValues", "[Ljava/lang/String;");
1275    if (field_mStringValues == NULL) {
1276        ALOGE("Can't find MtpPropertyList.mStringValues");
1277        return -1;
1278    }
1279
1280    if (AndroidRuntime::registerNativeMethods(env,
1281                "android/mtp/MtpDatabase", gMtpDatabaseMethods, NELEM(gMtpDatabaseMethods)))
1282        return -1;
1283
1284    return AndroidRuntime::registerNativeMethods(env,
1285                "android/mtp/MtpPropertyGroup", gMtpPropertyGroupMethods, NELEM(gMtpPropertyGroupMethods));
1286}
1287