android_mtp_MtpDatabase.cpp revision f26a586c86b097f975e26fe526ead564ad011bd0
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 30#include "MtpDatabase.h" 31#include "MtpDataPacket.h" 32#include "MtpProperty.h" 33#include "MtpStringBuffer.h" 34#include "MtpUtils.h" 35#include "mtp.h" 36 37using namespace android; 38 39// ---------------------------------------------------------------------------- 40 41static jmethodID method_beginSendObject; 42static jmethodID method_endSendObject; 43static jmethodID method_getObjectList; 44static jmethodID method_getNumObjects; 45static jmethodID method_getSupportedPlaybackFormats; 46static jmethodID method_getSupportedCaptureFormats; 47static jmethodID method_getSupportedObjectProperties; 48static jmethodID method_getSupportedDeviceProperties; 49static jmethodID method_setObjectProperty; 50static jmethodID method_getDeviceProperty; 51static jmethodID method_setDeviceProperty; 52static jmethodID method_getObjectPropertyList; 53static jmethodID method_getObjectInfo; 54static jmethodID method_getObjectFilePath; 55static jmethodID method_deleteFile; 56static jmethodID method_getObjectReferences; 57static jmethodID method_setObjectReferences; 58static jmethodID method_sessionStarted; 59static jmethodID method_sessionEnded; 60 61static jfieldID field_context; 62 63// MtpPropertyList fields 64static jfieldID field_mCount; 65static jfieldID field_mResult; 66static jfieldID field_mObjectHandles; 67static jfieldID field_mPropertyCodes; 68static jfieldID field_mDataTypes; 69static jfieldID field_mLongValues; 70static jfieldID field_mStringValues; 71 72 73MtpDatabase* getMtpDatabase(JNIEnv *env, jobject database) { 74 return (MtpDatabase *)env->GetIntField(database, field_context); 75} 76 77#ifdef HAVE_ANDROID_OS 78// ---------------------------------------------------------------------------- 79 80class MyMtpDatabase : public MtpDatabase { 81private: 82 jobject mDatabase; 83 jintArray mIntBuffer; 84 jlongArray mLongBuffer; 85 jcharArray mStringBuffer; 86 87public: 88 MyMtpDatabase(JNIEnv *env, jobject client); 89 virtual ~MyMtpDatabase(); 90 void cleanup(JNIEnv *env); 91 92 virtual MtpObjectHandle beginSendObject(const char* path, 93 MtpObjectFormat format, 94 MtpObjectHandle parent, 95 MtpStorageID storage, 96 uint64_t size, 97 time_t modified); 98 99 virtual void endSendObject(const char* path, 100 MtpObjectHandle handle, 101 MtpObjectFormat format, 102 bool succeeded); 103 104 virtual MtpObjectHandleList* getObjectList(MtpStorageID storageID, 105 MtpObjectFormat format, 106 MtpObjectHandle parent); 107 108 virtual int getNumObjects(MtpStorageID storageID, 109 MtpObjectFormat format, 110 MtpObjectHandle parent); 111 112 // callee should delete[] the results from these 113 // results can be NULL 114 virtual MtpObjectFormatList* getSupportedPlaybackFormats(); 115 virtual MtpObjectFormatList* getSupportedCaptureFormats(); 116 virtual MtpObjectPropertyList* getSupportedObjectProperties(MtpObjectFormat format); 117 virtual MtpDevicePropertyList* getSupportedDeviceProperties(); 118 119 virtual MtpResponseCode getObjectPropertyValue(MtpObjectHandle handle, 120 MtpObjectProperty property, 121 MtpDataPacket& packet); 122 123 virtual MtpResponseCode setObjectPropertyValue(MtpObjectHandle handle, 124 MtpObjectProperty property, 125 MtpDataPacket& packet); 126 127 virtual MtpResponseCode getDevicePropertyValue(MtpDeviceProperty property, 128 MtpDataPacket& packet); 129 130 virtual MtpResponseCode setDevicePropertyValue(MtpDeviceProperty property, 131 MtpDataPacket& packet); 132 133 virtual MtpResponseCode resetDeviceProperty(MtpDeviceProperty property); 134 135 virtual MtpResponseCode getObjectPropertyList(MtpObjectHandle handle, 136 uint32_t format, uint32_t property, 137 int groupCode, int depth, 138 MtpDataPacket& packet); 139 140 virtual MtpResponseCode getObjectInfo(MtpObjectHandle handle, 141 MtpDataPacket& packet); 142 143 virtual MtpResponseCode getObjectFilePath(MtpObjectHandle handle, 144 MtpString& outFilePath, 145 int64_t& outFileLength, 146 MtpObjectFormat& outFormat); 147 virtual MtpResponseCode deleteFile(MtpObjectHandle handle); 148 149 bool getObjectPropertyInfo(MtpObjectProperty property, int& type); 150 bool getDevicePropertyInfo(MtpDeviceProperty property, int& type); 151 152 virtual MtpObjectHandleList* getObjectReferences(MtpObjectHandle handle); 153 154 virtual MtpResponseCode setObjectReferences(MtpObjectHandle handle, 155 MtpObjectHandleList* references); 156 157 virtual MtpProperty* getObjectPropertyDesc(MtpObjectProperty property, 158 MtpObjectFormat format); 159 160 virtual MtpProperty* getDevicePropertyDesc(MtpDeviceProperty property); 161 162 virtual void sessionStarted(); 163 164 virtual void sessionEnded(); 165}; 166 167// ---------------------------------------------------------------------------- 168 169static void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) { 170 if (env->ExceptionCheck()) { 171 LOGE("An exception was thrown by callback '%s'.", methodName); 172 LOGE_EX(env); 173 env->ExceptionClear(); 174 } 175} 176 177// ---------------------------------------------------------------------------- 178 179MyMtpDatabase::MyMtpDatabase(JNIEnv *env, jobject client) 180 : mDatabase(env->NewGlobalRef(client)), 181 mIntBuffer(NULL), 182 mLongBuffer(NULL), 183 mStringBuffer(NULL) 184{ 185 jintArray intArray; 186 jlongArray longArray; 187 jcharArray charArray; 188 189 // create buffers for out arguments 190 // we don't need to be thread-safe so this is OK 191 intArray = env->NewIntArray(3); 192 if (!intArray) 193 goto out_of_memory; 194 mIntBuffer = (jintArray)env->NewGlobalRef(intArray); 195 longArray = env->NewLongArray(2); 196 if (!longArray) 197 goto out_of_memory; 198 mLongBuffer = (jlongArray)env->NewGlobalRef(longArray); 199 charArray = env->NewCharArray(256); 200 if (!charArray) 201 goto out_of_memory; 202 mStringBuffer = (jcharArray)env->NewGlobalRef(charArray); 203 return; 204 205out_of_memory: 206 env->ThrowNew(env->FindClass("java/lang/OutOfMemoryError"), NULL); 207} 208 209void MyMtpDatabase::cleanup(JNIEnv *env) { 210 env->DeleteGlobalRef(mDatabase); 211 env->DeleteGlobalRef(mIntBuffer); 212 env->DeleteGlobalRef(mLongBuffer); 213 env->DeleteGlobalRef(mStringBuffer); 214} 215 216MyMtpDatabase::~MyMtpDatabase() { 217} 218 219MtpObjectHandle MyMtpDatabase::beginSendObject(const char* path, 220 MtpObjectFormat format, 221 MtpObjectHandle parent, 222 MtpStorageID storage, 223 uint64_t size, 224 time_t modified) { 225 JNIEnv* env = AndroidRuntime::getJNIEnv(); 226 jstring pathStr = env->NewStringUTF(path); 227 MtpObjectHandle result = env->CallIntMethod(mDatabase, method_beginSendObject, 228 pathStr, (jint)format, (jint)parent, (jint)storage, 229 (jlong)size, (jlong)modified); 230 231 if (pathStr) 232 env->DeleteLocalRef(pathStr); 233 checkAndClearExceptionFromCallback(env, __FUNCTION__); 234 return result; 235} 236 237void MyMtpDatabase::endSendObject(const char* path, MtpObjectHandle handle, 238 MtpObjectFormat format, bool succeeded) { 239 JNIEnv* env = AndroidRuntime::getJNIEnv(); 240 jstring pathStr = env->NewStringUTF(path); 241 env->CallVoidMethod(mDatabase, method_endSendObject, pathStr, 242 (jint)handle, (jint)format, (jboolean)succeeded); 243 244 if (pathStr) 245 env->DeleteLocalRef(pathStr); 246 checkAndClearExceptionFromCallback(env, __FUNCTION__); 247} 248 249MtpObjectHandleList* MyMtpDatabase::getObjectList(MtpStorageID storageID, 250 MtpObjectFormat format, 251 MtpObjectHandle parent) { 252 JNIEnv* env = AndroidRuntime::getJNIEnv(); 253 jintArray array = (jintArray)env->CallObjectMethod(mDatabase, method_getObjectList, 254 (jint)storageID, (jint)format, (jint)parent); 255 if (!array) 256 return NULL; 257 MtpObjectHandleList* list = new MtpObjectHandleList(); 258 jint* handles = env->GetIntArrayElements(array, 0); 259 jsize length = env->GetArrayLength(array); 260 for (int i = 0; i < length; i++) 261 list->push(handles[i]); 262 env->ReleaseIntArrayElements(array, handles, 0); 263 env->DeleteLocalRef(array); 264 265 checkAndClearExceptionFromCallback(env, __FUNCTION__); 266 return list; 267} 268 269int MyMtpDatabase::getNumObjects(MtpStorageID storageID, 270 MtpObjectFormat format, 271 MtpObjectHandle parent) { 272 JNIEnv* env = AndroidRuntime::getJNIEnv(); 273 int result = env->CallIntMethod(mDatabase, method_getNumObjects, 274 (jint)storageID, (jint)format, (jint)parent); 275 276 checkAndClearExceptionFromCallback(env, __FUNCTION__); 277 return result; 278} 279 280MtpObjectFormatList* MyMtpDatabase::getSupportedPlaybackFormats() { 281 JNIEnv* env = AndroidRuntime::getJNIEnv(); 282 jintArray array = (jintArray)env->CallObjectMethod(mDatabase, 283 method_getSupportedPlaybackFormats); 284 if (!array) 285 return NULL; 286 MtpObjectFormatList* list = new MtpObjectFormatList(); 287 jint* formats = env->GetIntArrayElements(array, 0); 288 jsize length = env->GetArrayLength(array); 289 for (int i = 0; i < length; i++) 290 list->push(formats[i]); 291 env->ReleaseIntArrayElements(array, formats, 0); 292 env->DeleteLocalRef(array); 293 294 checkAndClearExceptionFromCallback(env, __FUNCTION__); 295 return list; 296} 297 298MtpObjectFormatList* MyMtpDatabase::getSupportedCaptureFormats() { 299 JNIEnv* env = AndroidRuntime::getJNIEnv(); 300 jintArray array = (jintArray)env->CallObjectMethod(mDatabase, 301 method_getSupportedCaptureFormats); 302 if (!array) 303 return NULL; 304 MtpObjectFormatList* list = new MtpObjectFormatList(); 305 jint* formats = env->GetIntArrayElements(array, 0); 306 jsize length = env->GetArrayLength(array); 307 for (int i = 0; i < length; i++) 308 list->push(formats[i]); 309 env->ReleaseIntArrayElements(array, formats, 0); 310 env->DeleteLocalRef(array); 311 312 checkAndClearExceptionFromCallback(env, __FUNCTION__); 313 return list; 314} 315 316MtpObjectPropertyList* MyMtpDatabase::getSupportedObjectProperties(MtpObjectFormat format) { 317 JNIEnv* env = AndroidRuntime::getJNIEnv(); 318 jintArray array = (jintArray)env->CallObjectMethod(mDatabase, 319 method_getSupportedObjectProperties, (jint)format); 320 if (!array) 321 return NULL; 322 MtpObjectPropertyList* list = new MtpObjectPropertyList(); 323 jint* properties = env->GetIntArrayElements(array, 0); 324 jsize length = env->GetArrayLength(array); 325 for (int i = 0; i < length; i++) 326 list->push(properties[i]); 327 env->ReleaseIntArrayElements(array, properties, 0); 328 env->DeleteLocalRef(array); 329 330 checkAndClearExceptionFromCallback(env, __FUNCTION__); 331 return list; 332} 333 334MtpDevicePropertyList* MyMtpDatabase::getSupportedDeviceProperties() { 335 JNIEnv* env = AndroidRuntime::getJNIEnv(); 336 jintArray array = (jintArray)env->CallObjectMethod(mDatabase, 337 method_getSupportedDeviceProperties); 338 if (!array) 339 return NULL; 340 MtpDevicePropertyList* list = new MtpDevicePropertyList(); 341 jint* properties = env->GetIntArrayElements(array, 0); 342 jsize length = env->GetArrayLength(array); 343 for (int i = 0; i < length; i++) 344 list->push(properties[i]); 345 env->ReleaseIntArrayElements(array, properties, 0); 346 env->DeleteLocalRef(array); 347 348 checkAndClearExceptionFromCallback(env, __FUNCTION__); 349 return list; 350} 351 352MtpResponseCode MyMtpDatabase::getObjectPropertyValue(MtpObjectHandle handle, 353 MtpObjectProperty property, 354 MtpDataPacket& packet) { 355 JNIEnv* env = AndroidRuntime::getJNIEnv(); 356 jobject list = env->CallObjectMethod(mDatabase, method_getObjectPropertyList, 357 (jlong)handle, 0, (jlong)property, 0, 0); 358 MtpResponseCode result = env->GetIntField(list, field_mResult); 359 int count = env->GetIntField(list, field_mCount); 360 if (result == MTP_RESPONSE_OK && count != 1) 361 result = MTP_RESPONSE_GENERAL_ERROR; 362 363 if (result == MTP_RESPONSE_OK) { 364 jintArray objectHandlesArray = (jintArray)env->GetObjectField(list, field_mObjectHandles); 365 jintArray propertyCodesArray = (jintArray)env->GetObjectField(list, field_mPropertyCodes); 366 jintArray dataTypesArray = (jintArray)env->GetObjectField(list, field_mDataTypes); 367 jlongArray longValuesArray = (jlongArray)env->GetObjectField(list, field_mLongValues); 368 jobjectArray stringValuesArray = (jobjectArray)env->GetObjectField(list, field_mStringValues); 369 370 jint* objectHandles = env->GetIntArrayElements(objectHandlesArray, 0); 371 jint* propertyCodes = env->GetIntArrayElements(propertyCodesArray, 0); 372 jint* dataTypes = env->GetIntArrayElements(dataTypesArray, 0); 373 jlong* longValues = (longValuesArray ? env->GetLongArrayElements(longValuesArray, 0) : NULL); 374 375 int type = dataTypes[0]; 376 jlong longValue = (longValues ? longValues[0] : 0); 377 378 // special case date properties, which are strings to MTP 379 // but stored internally as a uint64 380 if (property == MTP_PROPERTY_DATE_MODIFIED || property == MTP_PROPERTY_DATE_ADDED) { 381 char date[20]; 382 formatDateTime(longValue, date, sizeof(date)); 383 packet.putString(date); 384 goto out; 385 } 386 // release date is stored internally as just the year 387 if (property == MTP_PROPERTY_ORIGINAL_RELEASE_DATE) { 388 char date[20]; 389 snprintf(date, sizeof(date), "%04lld0101T000000", longValue); 390 packet.putString(date); 391 goto out; 392 } 393 394 switch (type) { 395 case MTP_TYPE_INT8: 396 packet.putInt8(longValue); 397 break; 398 case MTP_TYPE_UINT8: 399 packet.putUInt8(longValue); 400 break; 401 case MTP_TYPE_INT16: 402 packet.putInt16(longValue); 403 break; 404 case MTP_TYPE_UINT16: 405 packet.putUInt16(longValue); 406 break; 407 case MTP_TYPE_INT32: 408 packet.putInt32(longValue); 409 break; 410 case MTP_TYPE_UINT32: 411 packet.putUInt32(longValue); 412 break; 413 case MTP_TYPE_INT64: 414 packet.putInt64(longValue); 415 break; 416 case MTP_TYPE_UINT64: 417 packet.putUInt64(longValue); 418 break; 419 case MTP_TYPE_INT128: 420 packet.putInt128(longValue); 421 break; 422 case MTP_TYPE_UINT128: 423 packet.putInt128(longValue); 424 break; 425 case MTP_TYPE_STR: 426 { 427 jstring stringValue = (jstring)env->GetObjectArrayElement(stringValuesArray, 0); 428 if (stringValue) { 429 const char* str = env->GetStringUTFChars(stringValue, NULL); 430 packet.putString(str); 431 env->ReleaseStringUTFChars(stringValue, str); 432 } else { 433 packet.putEmptyString(); 434 } 435 break; 436 } 437 default: 438 LOGE("unsupported type in getObjectPropertyValue\n"); 439 result = MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT; 440 } 441out: 442 env->ReleaseIntArrayElements(objectHandlesArray, objectHandles, 0); 443 env->ReleaseIntArrayElements(propertyCodesArray, propertyCodes, 0); 444 env->ReleaseIntArrayElements(dataTypesArray, dataTypes, 0); 445 if (longValues) 446 env->ReleaseLongArrayElements(longValuesArray, longValues, 0); 447 448 env->DeleteLocalRef(objectHandlesArray); 449 env->DeleteLocalRef(propertyCodesArray); 450 env->DeleteLocalRef(dataTypesArray); 451 if (longValuesArray) 452 env->DeleteLocalRef(longValuesArray); 453 if (stringValuesArray) 454 env->DeleteLocalRef(stringValuesArray); 455 } 456 457 env->DeleteLocalRef(list); 458 checkAndClearExceptionFromCallback(env, __FUNCTION__); 459 return result; 460} 461 462MtpResponseCode MyMtpDatabase::setObjectPropertyValue(MtpObjectHandle handle, 463 MtpObjectProperty property, 464 MtpDataPacket& packet) { 465 int type; 466 467 if (!getObjectPropertyInfo(property, type)) 468 return MTP_RESPONSE_OBJECT_PROP_NOT_SUPPORTED; 469 470 JNIEnv* env = AndroidRuntime::getJNIEnv(); 471 jlong longValue = 0; 472 jstring stringValue = NULL; 473 474 switch (type) { 475 case MTP_TYPE_INT8: 476 longValue = packet.getInt8(); 477 break; 478 case MTP_TYPE_UINT8: 479 longValue = packet.getUInt8(); 480 break; 481 case MTP_TYPE_INT16: 482 longValue = packet.getInt16(); 483 break; 484 case MTP_TYPE_UINT16: 485 longValue = packet.getUInt16(); 486 break; 487 case MTP_TYPE_INT32: 488 longValue = packet.getInt32(); 489 break; 490 case MTP_TYPE_UINT32: 491 longValue = packet.getUInt32(); 492 break; 493 case MTP_TYPE_INT64: 494 longValue = packet.getInt64(); 495 break; 496 case MTP_TYPE_UINT64: 497 longValue = packet.getUInt64(); 498 break; 499 case MTP_TYPE_STR: 500 { 501 MtpStringBuffer buffer; 502 packet.getString(buffer); 503 stringValue = env->NewStringUTF((const char *)buffer); 504 break; 505 } 506 default: 507 LOGE("unsupported type in getObjectPropertyValue\n"); 508 return MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT; 509 } 510 511 jint result = env->CallIntMethod(mDatabase, method_setObjectProperty, 512 (jint)handle, (jint)property, longValue, stringValue); 513 if (stringValue) 514 env->DeleteLocalRef(stringValue); 515 516 checkAndClearExceptionFromCallback(env, __FUNCTION__); 517 return result; 518} 519 520MtpResponseCode MyMtpDatabase::getDevicePropertyValue(MtpDeviceProperty property, 521 MtpDataPacket& packet) { 522 int type; 523 524 if (!getDevicePropertyInfo(property, type)) 525 return MTP_RESPONSE_DEVICE_PROP_NOT_SUPPORTED; 526 527 JNIEnv* env = AndroidRuntime::getJNIEnv(); 528 jint result = env->CallIntMethod(mDatabase, method_getDeviceProperty, 529 (jint)property, mLongBuffer, mStringBuffer); 530 if (result != MTP_RESPONSE_OK) { 531 checkAndClearExceptionFromCallback(env, __FUNCTION__); 532 return result; 533 } 534 535 jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0); 536 jlong longValue = longValues[0]; 537 env->ReleaseLongArrayElements(mLongBuffer, longValues, 0); 538 539 switch (type) { 540 case MTP_TYPE_INT8: 541 packet.putInt8(longValue); 542 break; 543 case MTP_TYPE_UINT8: 544 packet.putUInt8(longValue); 545 break; 546 case MTP_TYPE_INT16: 547 packet.putInt16(longValue); 548 break; 549 case MTP_TYPE_UINT16: 550 packet.putUInt16(longValue); 551 break; 552 case MTP_TYPE_INT32: 553 packet.putInt32(longValue); 554 break; 555 case MTP_TYPE_UINT32: 556 packet.putUInt32(longValue); 557 break; 558 case MTP_TYPE_INT64: 559 packet.putInt64(longValue); 560 break; 561 case MTP_TYPE_UINT64: 562 packet.putUInt64(longValue); 563 break; 564 case MTP_TYPE_INT128: 565 packet.putInt128(longValue); 566 break; 567 case MTP_TYPE_UINT128: 568 packet.putInt128(longValue); 569 break; 570 case MTP_TYPE_STR: 571 { 572 jchar* str = env->GetCharArrayElements(mStringBuffer, 0); 573 packet.putString(str); 574 env->ReleaseCharArrayElements(mStringBuffer, str, 0); 575 break; 576 } 577 default: 578 LOGE("unsupported type in getDevicePropertyValue\n"); 579 return MTP_RESPONSE_INVALID_DEVICE_PROP_FORMAT; 580 } 581 582 checkAndClearExceptionFromCallback(env, __FUNCTION__); 583 return MTP_RESPONSE_OK; 584} 585 586MtpResponseCode MyMtpDatabase::setDevicePropertyValue(MtpDeviceProperty property, 587 MtpDataPacket& packet) { 588 int type; 589 590 if (!getDevicePropertyInfo(property, type)) 591 return MTP_RESPONSE_DEVICE_PROP_NOT_SUPPORTED; 592 593 JNIEnv* env = AndroidRuntime::getJNIEnv(); 594 jlong longValue = 0; 595 jstring stringValue = NULL; 596 597 switch (type) { 598 case MTP_TYPE_INT8: 599 longValue = packet.getInt8(); 600 break; 601 case MTP_TYPE_UINT8: 602 longValue = packet.getUInt8(); 603 break; 604 case MTP_TYPE_INT16: 605 longValue = packet.getInt16(); 606 break; 607 case MTP_TYPE_UINT16: 608 longValue = packet.getUInt16(); 609 break; 610 case MTP_TYPE_INT32: 611 longValue = packet.getInt32(); 612 break; 613 case MTP_TYPE_UINT32: 614 longValue = packet.getUInt32(); 615 break; 616 case MTP_TYPE_INT64: 617 longValue = packet.getInt64(); 618 break; 619 case MTP_TYPE_UINT64: 620 longValue = packet.getUInt64(); 621 break; 622 case MTP_TYPE_STR: 623 { 624 MtpStringBuffer buffer; 625 packet.getString(buffer); 626 stringValue = env->NewStringUTF((const char *)buffer); 627 break; 628 } 629 default: 630 LOGE("unsupported type in setDevicePropertyValue\n"); 631 return MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT; 632 } 633 634 jint result = env->CallIntMethod(mDatabase, method_setDeviceProperty, 635 (jint)property, longValue, stringValue); 636 if (stringValue) 637 env->DeleteLocalRef(stringValue); 638 639 checkAndClearExceptionFromCallback(env, __FUNCTION__); 640 return result; 641} 642 643MtpResponseCode MyMtpDatabase::resetDeviceProperty(MtpDeviceProperty property) { 644 return -1; 645} 646 647MtpResponseCode MyMtpDatabase::getObjectPropertyList(MtpObjectHandle handle, 648 uint32_t format, uint32_t property, 649 int groupCode, int depth, 650 MtpDataPacket& packet) { 651 JNIEnv* env = AndroidRuntime::getJNIEnv(); 652 jobject list = env->CallObjectMethod(mDatabase, method_getObjectPropertyList, 653 (jlong)handle, (jint)format, (jlong)property, (jint)groupCode, (jint)depth); 654 checkAndClearExceptionFromCallback(env, __FUNCTION__); 655 if (!list) 656 return MTP_RESPONSE_GENERAL_ERROR; 657 int count = env->GetIntField(list, field_mCount); 658 MtpResponseCode result = env->GetIntField(list, field_mResult); 659 660 packet.putUInt32(count); 661 if (count > 0) { 662 jintArray objectHandlesArray = (jintArray)env->GetObjectField(list, field_mObjectHandles); 663 jintArray propertyCodesArray = (jintArray)env->GetObjectField(list, field_mPropertyCodes); 664 jintArray dataTypesArray = (jintArray)env->GetObjectField(list, field_mDataTypes); 665 jlongArray longValuesArray = (jlongArray)env->GetObjectField(list, field_mLongValues); 666 jobjectArray stringValuesArray = (jobjectArray)env->GetObjectField(list, field_mStringValues); 667 668 jint* objectHandles = env->GetIntArrayElements(objectHandlesArray, 0); 669 jint* propertyCodes = env->GetIntArrayElements(propertyCodesArray, 0); 670 jint* dataTypes = env->GetIntArrayElements(dataTypesArray, 0); 671 jlong* longValues = (longValuesArray ? env->GetLongArrayElements(longValuesArray, 0) : NULL); 672 673 for (int i = 0; i < count; i++) { 674 packet.putUInt32(objectHandles[i]); 675 packet.putUInt16(propertyCodes[i]); 676 int type = dataTypes[i]; 677 packet.putUInt16(type); 678 679 switch (type) { 680 case MTP_TYPE_INT8: 681 packet.putInt8(longValues[i]); 682 break; 683 case MTP_TYPE_UINT8: 684 packet.putUInt8(longValues[i]); 685 break; 686 case MTP_TYPE_INT16: 687 packet.putInt16(longValues[i]); 688 break; 689 case MTP_TYPE_UINT16: 690 packet.putUInt16(longValues[i]); 691 break; 692 case MTP_TYPE_INT32: 693 packet.putInt32(longValues[i]); 694 break; 695 case MTP_TYPE_UINT32: 696 packet.putUInt32(longValues[i]); 697 break; 698 case MTP_TYPE_INT64: 699 packet.putInt64(longValues[i]); 700 break; 701 case MTP_TYPE_UINT64: 702 packet.putUInt64(longValues[i]); 703 break; 704 case MTP_TYPE_INT128: 705 packet.putInt128(longValues[i]); 706 break; 707 case MTP_TYPE_UINT128: 708 packet.putUInt128(longValues[i]); 709 break; 710 case MTP_TYPE_STR: { 711 jstring value = (jstring)env->GetObjectArrayElement(stringValuesArray, i); 712 const char *valueStr = (value ? env->GetStringUTFChars(value, NULL) : NULL); 713 if (valueStr) { 714 packet.putString(valueStr); 715 env->ReleaseStringUTFChars(value, valueStr); 716 } else { 717 packet.putEmptyString(); 718 } 719 env->DeleteLocalRef(value); 720 break; 721 } 722 default: 723 LOGE("bad or unsupported data type in MyMtpDatabase::getObjectPropertyList"); 724 break; 725 } 726 } 727 728 env->ReleaseIntArrayElements(objectHandlesArray, objectHandles, 0); 729 env->ReleaseIntArrayElements(propertyCodesArray, propertyCodes, 0); 730 env->ReleaseIntArrayElements(dataTypesArray, dataTypes, 0); 731 if (longValues) 732 env->ReleaseLongArrayElements(longValuesArray, longValues, 0); 733 734 env->DeleteLocalRef(objectHandlesArray); 735 env->DeleteLocalRef(propertyCodesArray); 736 env->DeleteLocalRef(dataTypesArray); 737 if (longValuesArray) 738 env->DeleteLocalRef(longValuesArray); 739 if (stringValuesArray) 740 env->DeleteLocalRef(stringValuesArray); 741 } 742 743 env->DeleteLocalRef(list); 744 checkAndClearExceptionFromCallback(env, __FUNCTION__); 745 return result; 746} 747 748MtpResponseCode MyMtpDatabase::getObjectInfo(MtpObjectHandle handle, 749 MtpDataPacket& packet) { 750 char date[20]; 751 752 JNIEnv* env = AndroidRuntime::getJNIEnv(); 753 jboolean result = env->CallBooleanMethod(mDatabase, method_getObjectInfo, 754 (jint)handle, mIntBuffer, mStringBuffer, mLongBuffer); 755 if (!result) 756 return MTP_RESPONSE_INVALID_OBJECT_HANDLE; 757 758 jint* intValues = env->GetIntArrayElements(mIntBuffer, 0); 759 MtpStorageID storageID = intValues[0]; 760 MtpObjectFormat format = intValues[1]; 761 MtpObjectHandle parent = intValues[2]; 762 env->ReleaseIntArrayElements(mIntBuffer, intValues, 0); 763 764 jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0); 765 uint64_t size = longValues[0]; 766 uint64_t modified = longValues[1]; 767 env->ReleaseLongArrayElements(mLongBuffer, longValues, 0); 768 769// int associationType = (format == MTP_FORMAT_ASSOCIATION ? 770// MTP_ASSOCIATION_TYPE_GENERIC_FOLDER : 771// MTP_ASSOCIATION_TYPE_UNDEFINED); 772 int associationType = MTP_ASSOCIATION_TYPE_UNDEFINED; 773 774 packet.putUInt32(storageID); 775 packet.putUInt16(format); 776 packet.putUInt16(0); // protection status 777 packet.putUInt32((size > 0xFFFFFFFFLL ? 0xFFFFFFFF : size)); 778 packet.putUInt16(0); // thumb format 779 packet.putUInt32(0); // thumb compressed size 780 packet.putUInt32(0); // thumb pix width 781 packet.putUInt32(0); // thumb pix height 782 packet.putUInt32(0); // image pix width 783 packet.putUInt32(0); // image pix height 784 packet.putUInt32(0); // image bit depth 785 packet.putUInt32(parent); 786 packet.putUInt16(associationType); 787 packet.putUInt32(0); // association desc 788 packet.putUInt32(0); // sequence number 789 790 jchar* str = env->GetCharArrayElements(mStringBuffer, 0); 791 packet.putString(str); // file name 792 env->ReleaseCharArrayElements(mStringBuffer, str, 0); 793 794 packet.putEmptyString(); 795 formatDateTime(modified, date, sizeof(date)); 796 packet.putString(date); // date modified 797 packet.putEmptyString(); // keywords 798 799 checkAndClearExceptionFromCallback(env, __FUNCTION__); 800 return MTP_RESPONSE_OK; 801} 802 803MtpResponseCode MyMtpDatabase::getObjectFilePath(MtpObjectHandle handle, 804 MtpString& outFilePath, 805 int64_t& outFileLength, 806 MtpObjectFormat& outFormat) { 807 JNIEnv* env = AndroidRuntime::getJNIEnv(); 808 jint result = env->CallIntMethod(mDatabase, method_getObjectFilePath, 809 (jint)handle, mStringBuffer, mLongBuffer); 810 if (result != MTP_RESPONSE_OK) { 811 checkAndClearExceptionFromCallback(env, __FUNCTION__); 812 return result; 813 } 814 815 jchar* str = env->GetCharArrayElements(mStringBuffer, 0); 816 outFilePath.setTo(str, strlen16(str)); 817 env->ReleaseCharArrayElements(mStringBuffer, str, 0); 818 819 jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0); 820 outFileLength = longValues[0]; 821 outFormat = longValues[1]; 822 env->ReleaseLongArrayElements(mLongBuffer, longValues, 0); 823 824 checkAndClearExceptionFromCallback(env, __FUNCTION__); 825 return result; 826} 827 828MtpResponseCode MyMtpDatabase::deleteFile(MtpObjectHandle handle) { 829 JNIEnv* env = AndroidRuntime::getJNIEnv(); 830 MtpResponseCode result = env->CallIntMethod(mDatabase, method_deleteFile, (jint)handle); 831 832 checkAndClearExceptionFromCallback(env, __FUNCTION__); 833 return result; 834} 835 836struct PropertyTableEntry { 837 MtpObjectProperty property; 838 int type; 839}; 840 841static const PropertyTableEntry kObjectPropertyTable[] = { 842 { MTP_PROPERTY_STORAGE_ID, MTP_TYPE_UINT32 }, 843 { MTP_PROPERTY_OBJECT_FORMAT, MTP_TYPE_UINT16 }, 844 { MTP_PROPERTY_PROTECTION_STATUS, MTP_TYPE_UINT16 }, 845 { MTP_PROPERTY_OBJECT_SIZE, MTP_TYPE_UINT64 }, 846 { MTP_PROPERTY_OBJECT_FILE_NAME, MTP_TYPE_STR }, 847 { MTP_PROPERTY_DATE_MODIFIED, MTP_TYPE_STR }, 848 { MTP_PROPERTY_PARENT_OBJECT, MTP_TYPE_UINT32 }, 849 { MTP_PROPERTY_PERSISTENT_UID, MTP_TYPE_UINT128 }, 850 { MTP_PROPERTY_NAME, MTP_TYPE_STR }, 851 { MTP_PROPERTY_DISPLAY_NAME, MTP_TYPE_STR }, 852 { MTP_PROPERTY_DATE_ADDED, MTP_TYPE_STR }, 853 { MTP_PROPERTY_ARTIST, MTP_TYPE_STR }, 854 { MTP_PROPERTY_ALBUM_NAME, MTP_TYPE_STR }, 855 { MTP_PROPERTY_ALBUM_ARTIST, MTP_TYPE_STR }, 856 { MTP_PROPERTY_TRACK, MTP_TYPE_UINT16 }, 857 { MTP_PROPERTY_ORIGINAL_RELEASE_DATE, MTP_TYPE_STR }, 858 { MTP_PROPERTY_GENRE, MTP_TYPE_STR }, 859 { MTP_PROPERTY_COMPOSER, MTP_TYPE_STR }, 860 { MTP_PROPERTY_DURATION, MTP_TYPE_UINT32 }, 861 { MTP_PROPERTY_DESCRIPTION, MTP_TYPE_STR }, 862}; 863 864static const PropertyTableEntry kDevicePropertyTable[] = { 865 { MTP_DEVICE_PROPERTY_SYNCHRONIZATION_PARTNER, MTP_TYPE_STR }, 866 { MTP_DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME, MTP_TYPE_STR }, 867 { MTP_DEVICE_PROPERTY_IMAGE_SIZE, MTP_TYPE_STR }, 868}; 869 870bool MyMtpDatabase::getObjectPropertyInfo(MtpObjectProperty property, int& type) { 871 int count = sizeof(kObjectPropertyTable) / sizeof(kObjectPropertyTable[0]); 872 const PropertyTableEntry* entry = kObjectPropertyTable; 873 for (int i = 0; i < count; i++, entry++) { 874 if (entry->property == property) { 875 type = entry->type; 876 return true; 877 } 878 } 879 return false; 880} 881 882bool MyMtpDatabase::getDevicePropertyInfo(MtpDeviceProperty property, int& type) { 883 int count = sizeof(kDevicePropertyTable) / sizeof(kDevicePropertyTable[0]); 884 const PropertyTableEntry* entry = kDevicePropertyTable; 885 for (int i = 0; i < count; i++, entry++) { 886 if (entry->property == property) { 887 type = entry->type; 888 return true; 889 } 890 } 891 return false; 892} 893 894MtpObjectHandleList* MyMtpDatabase::getObjectReferences(MtpObjectHandle handle) { 895 JNIEnv* env = AndroidRuntime::getJNIEnv(); 896 jintArray array = (jintArray)env->CallObjectMethod(mDatabase, method_getObjectReferences, 897 (jint)handle); 898 if (!array) 899 return NULL; 900 MtpObjectHandleList* list = new MtpObjectHandleList(); 901 jint* handles = env->GetIntArrayElements(array, 0); 902 jsize length = env->GetArrayLength(array); 903 for (int i = 0; i < length; i++) 904 list->push(handles[i]); 905 env->ReleaseIntArrayElements(array, handles, 0); 906 env->DeleteLocalRef(array); 907 908 checkAndClearExceptionFromCallback(env, __FUNCTION__); 909 return list; 910} 911 912MtpResponseCode MyMtpDatabase::setObjectReferences(MtpObjectHandle handle, 913 MtpObjectHandleList* references) { 914 JNIEnv* env = AndroidRuntime::getJNIEnv(); 915 int count = references->size(); 916 jintArray array = env->NewIntArray(count); 917 if (!array) { 918 LOGE("out of memory in setObjectReferences"); 919 return false; 920 } 921 jint* handles = env->GetIntArrayElements(array, 0); 922 for (int i = 0; i < count; i++) 923 handles[i] = (*references)[i]; 924 env->ReleaseIntArrayElements(array, handles, 0); 925 MtpResponseCode result = env->CallIntMethod(mDatabase, method_setObjectReferences, 926 (jint)handle, array); 927 env->DeleteLocalRef(array); 928 929 checkAndClearExceptionFromCallback(env, __FUNCTION__); 930 return result; 931} 932 933MtpProperty* MyMtpDatabase::getObjectPropertyDesc(MtpObjectProperty property, 934 MtpObjectFormat format) { 935 MtpProperty* result = NULL; 936 switch (property) { 937 case MTP_PROPERTY_OBJECT_FORMAT: 938 // use format as default value 939 result = new MtpProperty(property, MTP_TYPE_UINT16, false, format); 940 break; 941 case MTP_PROPERTY_PROTECTION_STATUS: 942 case MTP_PROPERTY_TRACK: 943 result = new MtpProperty(property, MTP_TYPE_UINT16); 944 break; 945 case MTP_PROPERTY_STORAGE_ID: 946 case MTP_PROPERTY_PARENT_OBJECT: 947 case MTP_PROPERTY_DURATION: 948 result = new MtpProperty(property, MTP_TYPE_UINT32); 949 break; 950 case MTP_PROPERTY_OBJECT_SIZE: 951 result = new MtpProperty(property, MTP_TYPE_UINT64); 952 break; 953 case MTP_PROPERTY_PERSISTENT_UID: 954 result = new MtpProperty(property, MTP_TYPE_UINT128); 955 break; 956 case MTP_PROPERTY_NAME: 957 case MTP_PROPERTY_DISPLAY_NAME: 958 case MTP_PROPERTY_ARTIST: 959 case MTP_PROPERTY_ALBUM_NAME: 960 case MTP_PROPERTY_ALBUM_ARTIST: 961 case MTP_PROPERTY_GENRE: 962 case MTP_PROPERTY_COMPOSER: 963 case MTP_PROPERTY_DESCRIPTION: 964 result = new MtpProperty(property, MTP_TYPE_STR); 965 break; 966 case MTP_PROPERTY_DATE_MODIFIED: 967 case MTP_PROPERTY_DATE_ADDED: 968 case MTP_PROPERTY_ORIGINAL_RELEASE_DATE: 969 result = new MtpProperty(property, MTP_TYPE_STR); 970 result->setFormDateTime(); 971 break; 972 case MTP_PROPERTY_OBJECT_FILE_NAME: 973 // We allow renaming files and folders 974 result = new MtpProperty(property, MTP_TYPE_STR, true); 975 break; 976 } 977 978 return result; 979} 980 981MtpProperty* MyMtpDatabase::getDevicePropertyDesc(MtpDeviceProperty property) { 982 JNIEnv* env = AndroidRuntime::getJNIEnv(); 983 MtpProperty* result = NULL; 984 bool writable = false; 985 986 switch (property) { 987 case MTP_DEVICE_PROPERTY_SYNCHRONIZATION_PARTNER: 988 case MTP_DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME: 989 writable = true; 990 // fall through 991 case MTP_DEVICE_PROPERTY_IMAGE_SIZE: 992 result = new MtpProperty(property, MTP_TYPE_STR, writable); 993 994 // get current value 995 jint ret = env->CallIntMethod(mDatabase, method_getDeviceProperty, 996 (jint)property, mLongBuffer, mStringBuffer); 997 if (ret == MTP_RESPONSE_OK) { 998 jchar* str = env->GetCharArrayElements(mStringBuffer, 0); 999 result->setCurrentValue(str); 1000 // for read-only properties it is safe to assume current value is default value 1001 if (!writable) 1002 result->setDefaultValue(str); 1003 env->ReleaseCharArrayElements(mStringBuffer, str, 0); 1004 } else { 1005 LOGE("unable to read device property, response: %04X", ret); 1006 } 1007 break; 1008 } 1009 1010 checkAndClearExceptionFromCallback(env, __FUNCTION__); 1011 return result; 1012} 1013 1014void MyMtpDatabase::sessionStarted() { 1015 JNIEnv* env = AndroidRuntime::getJNIEnv(); 1016 env->CallVoidMethod(mDatabase, method_sessionStarted); 1017 checkAndClearExceptionFromCallback(env, __FUNCTION__); 1018} 1019 1020void MyMtpDatabase::sessionEnded() { 1021 JNIEnv* env = AndroidRuntime::getJNIEnv(); 1022 env->CallVoidMethod(mDatabase, method_sessionEnded); 1023 checkAndClearExceptionFromCallback(env, __FUNCTION__); 1024} 1025 1026#endif // HAVE_ANDROID_OS 1027 1028// ---------------------------------------------------------------------------- 1029 1030static void 1031android_mtp_MtpDatabase_setup(JNIEnv *env, jobject thiz) 1032{ 1033#ifdef HAVE_ANDROID_OS 1034 MyMtpDatabase* database = new MyMtpDatabase(env, thiz); 1035 env->SetIntField(thiz, field_context, (int)database); 1036 checkAndClearExceptionFromCallback(env, __FUNCTION__); 1037#endif 1038} 1039 1040static void 1041android_mtp_MtpDatabase_finalize(JNIEnv *env, jobject thiz) 1042{ 1043#ifdef HAVE_ANDROID_OS 1044 MyMtpDatabase* database = (MyMtpDatabase *)env->GetIntField(thiz, field_context); 1045 database->cleanup(env); 1046 delete database; 1047 env->SetIntField(thiz, field_context, 0); 1048 checkAndClearExceptionFromCallback(env, __FUNCTION__); 1049#endif 1050} 1051 1052static jstring 1053android_mtp_MtpPropertyGroup_format_date_time(JNIEnv *env, jobject thiz, jlong seconds) 1054{ 1055#ifdef HAVE_ANDROID_OS 1056 char date[20]; 1057 formatDateTime(seconds, date, sizeof(date)); 1058 return env->NewStringUTF(date); 1059#else 1060 return NULL; 1061#endif 1062} 1063 1064// ---------------------------------------------------------------------------- 1065 1066static JNINativeMethod gMtpDatabaseMethods[] = { 1067 {"native_setup", "()V", (void *)android_mtp_MtpDatabase_setup}, 1068 {"native_finalize", "()V", (void *)android_mtp_MtpDatabase_finalize}, 1069}; 1070 1071static JNINativeMethod gMtpPropertyGroupMethods[] = { 1072 {"format_date_time", "(J)Ljava/lang/String;", 1073 (void *)android_mtp_MtpPropertyGroup_format_date_time}, 1074}; 1075 1076static const char* const kClassPathName = "android/mtp/MtpDatabase"; 1077 1078int register_android_mtp_MtpDatabase(JNIEnv *env) 1079{ 1080 jclass clazz; 1081 1082 clazz = env->FindClass("android/mtp/MtpDatabase"); 1083 if (clazz == NULL) { 1084 LOGE("Can't find android/mtp/MtpDatabase"); 1085 return -1; 1086 } 1087 method_beginSendObject = env->GetMethodID(clazz, "beginSendObject", "(Ljava/lang/String;IIIJJ)I"); 1088 if (method_beginSendObject == NULL) { 1089 LOGE("Can't find beginSendObject"); 1090 return -1; 1091 } 1092 method_endSendObject = env->GetMethodID(clazz, "endSendObject", "(Ljava/lang/String;IIZ)V"); 1093 if (method_endSendObject == NULL) { 1094 LOGE("Can't find endSendObject"); 1095 return -1; 1096 } 1097 method_getObjectList = env->GetMethodID(clazz, "getObjectList", "(III)[I"); 1098 if (method_getObjectList == NULL) { 1099 LOGE("Can't find getObjectList"); 1100 return -1; 1101 } 1102 method_getNumObjects = env->GetMethodID(clazz, "getNumObjects", "(III)I"); 1103 if (method_getNumObjects == NULL) { 1104 LOGE("Can't find getNumObjects"); 1105 return -1; 1106 } 1107 method_getSupportedPlaybackFormats = env->GetMethodID(clazz, "getSupportedPlaybackFormats", "()[I"); 1108 if (method_getSupportedPlaybackFormats == NULL) { 1109 LOGE("Can't find getSupportedPlaybackFormats"); 1110 return -1; 1111 } 1112 method_getSupportedCaptureFormats = env->GetMethodID(clazz, "getSupportedCaptureFormats", "()[I"); 1113 if (method_getSupportedCaptureFormats == NULL) { 1114 LOGE("Can't find getSupportedCaptureFormats"); 1115 return -1; 1116 } 1117 method_getSupportedObjectProperties = env->GetMethodID(clazz, "getSupportedObjectProperties", "(I)[I"); 1118 if (method_getSupportedObjectProperties == NULL) { 1119 LOGE("Can't find getSupportedObjectProperties"); 1120 return -1; 1121 } 1122 method_getSupportedDeviceProperties = env->GetMethodID(clazz, "getSupportedDeviceProperties", "()[I"); 1123 if (method_getSupportedDeviceProperties == NULL) { 1124 LOGE("Can't find getSupportedDeviceProperties"); 1125 return -1; 1126 } 1127 method_setObjectProperty = env->GetMethodID(clazz, "setObjectProperty", "(IIJLjava/lang/String;)I"); 1128 if (method_setObjectProperty == NULL) { 1129 LOGE("Can't find setObjectProperty"); 1130 return -1; 1131 } 1132 method_getDeviceProperty = env->GetMethodID(clazz, "getDeviceProperty", "(I[J[C)I"); 1133 if (method_getDeviceProperty == NULL) { 1134 LOGE("Can't find getDeviceProperty"); 1135 return -1; 1136 } 1137 method_setDeviceProperty = env->GetMethodID(clazz, "setDeviceProperty", "(IJLjava/lang/String;)I"); 1138 if (method_setDeviceProperty == NULL) { 1139 LOGE("Can't find setDeviceProperty"); 1140 return -1; 1141 } 1142 method_getObjectPropertyList = env->GetMethodID(clazz, "getObjectPropertyList", 1143 "(JIJII)Landroid/mtp/MtpPropertyList;"); 1144 if (method_getObjectPropertyList == NULL) { 1145 LOGE("Can't find getObjectPropertyList"); 1146 return -1; 1147 } 1148 method_getObjectInfo = env->GetMethodID(clazz, "getObjectInfo", "(I[I[C[J)Z"); 1149 if (method_getObjectInfo == NULL) { 1150 LOGE("Can't find getObjectInfo"); 1151 return -1; 1152 } 1153 method_getObjectFilePath = env->GetMethodID(clazz, "getObjectFilePath", "(I[C[J)I"); 1154 if (method_getObjectFilePath == NULL) { 1155 LOGE("Can't find getObjectFilePath"); 1156 return -1; 1157 } 1158 method_deleteFile = env->GetMethodID(clazz, "deleteFile", "(I)I"); 1159 if (method_deleteFile == NULL) { 1160 LOGE("Can't find deleteFile"); 1161 return -1; 1162 } 1163 method_getObjectReferences = env->GetMethodID(clazz, "getObjectReferences", "(I)[I"); 1164 if (method_getObjectReferences == NULL) { 1165 LOGE("Can't find getObjectReferences"); 1166 return -1; 1167 } 1168 method_setObjectReferences = env->GetMethodID(clazz, "setObjectReferences", "(I[I)I"); 1169 if (method_setObjectReferences == NULL) { 1170 LOGE("Can't find setObjectReferences"); 1171 return -1; 1172 } 1173 method_sessionStarted = env->GetMethodID(clazz, "sessionStarted", "()V"); 1174 if (method_sessionStarted == NULL) { 1175 LOGE("Can't find sessionStarted"); 1176 return -1; 1177 } 1178 method_sessionEnded = env->GetMethodID(clazz, "sessionEnded", "()V"); 1179 if (method_sessionEnded == NULL) { 1180 LOGE("Can't find sessionEnded"); 1181 return -1; 1182 } 1183 1184 field_context = env->GetFieldID(clazz, "mNativeContext", "I"); 1185 if (field_context == NULL) { 1186 LOGE("Can't find MtpDatabase.mNativeContext"); 1187 return -1; 1188 } 1189 1190 // now set up fields for MtpPropertyList class 1191 clazz = env->FindClass("android/mtp/MtpPropertyList"); 1192 if (clazz == NULL) { 1193 LOGE("Can't find android/mtp/MtpPropertyList"); 1194 return -1; 1195 } 1196 field_mCount = env->GetFieldID(clazz, "mCount", "I"); 1197 if (field_mCount == NULL) { 1198 LOGE("Can't find MtpPropertyList.mCount"); 1199 return -1; 1200 } 1201 field_mResult = env->GetFieldID(clazz, "mResult", "I"); 1202 if (field_mResult == NULL) { 1203 LOGE("Can't find MtpPropertyList.mResult"); 1204 return -1; 1205 } 1206 field_mObjectHandles = env->GetFieldID(clazz, "mObjectHandles", "[I"); 1207 if (field_mObjectHandles == NULL) { 1208 LOGE("Can't find MtpPropertyList.mObjectHandles"); 1209 return -1; 1210 } 1211 field_mPropertyCodes = env->GetFieldID(clazz, "mPropertyCodes", "[I"); 1212 if (field_mPropertyCodes == NULL) { 1213 LOGE("Can't find MtpPropertyList.mPropertyCodes"); 1214 return -1; 1215 } 1216 field_mDataTypes = env->GetFieldID(clazz, "mDataTypes", "[I"); 1217 if (field_mDataTypes == NULL) { 1218 LOGE("Can't find MtpPropertyList.mDataTypes"); 1219 return -1; 1220 } 1221 field_mLongValues = env->GetFieldID(clazz, "mLongValues", "[J"); 1222 if (field_mLongValues == NULL) { 1223 LOGE("Can't find MtpPropertyList.mLongValues"); 1224 return -1; 1225 } 1226 field_mStringValues = env->GetFieldID(clazz, "mStringValues", "[Ljava/lang/String;"); 1227 if (field_mStringValues == NULL) { 1228 LOGE("Can't find MtpPropertyList.mStringValues"); 1229 return -1; 1230 } 1231 1232 if (AndroidRuntime::registerNativeMethods(env, 1233 "android/mtp/MtpDatabase", gMtpDatabaseMethods, NELEM(gMtpDatabaseMethods))) 1234 return -1; 1235 1236 return AndroidRuntime::registerNativeMethods(env, 1237 "android/mtp/MtpPropertyGroup", gMtpPropertyGroupMethods, NELEM(gMtpPropertyGroupMethods)); 1238} 1239