| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // #define LOG_NDEBUG 0 |
| |
| #define LOG_TAG "MtpDeviceJNI" |
| #include "utils/Log.h" |
| |
| #include <stdio.h> |
| #include <assert.h> |
| #include <limits.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| |
| #include <memory> |
| #include <string> |
| |
| #include "jni.h" |
| #include <nativehelper/JNIHelp.h> |
| #include <nativehelper/ScopedPrimitiveArray.h> |
| |
| #include "android_runtime/AndroidRuntime.h" |
| #include "android_runtime/Log.h" |
| #include "nativehelper/ScopedLocalRef.h" |
| #include "private/android_filesystem_config.h" |
| |
| #include "MtpTypes.h" |
| #include "MtpDevice.h" |
| #include "MtpDeviceInfo.h" |
| #include "MtpStorageInfo.h" |
| #include "MtpObjectInfo.h" |
| #include "MtpProperty.h" |
| |
| using namespace android; |
| |
| // ---------------------------------------------------------------------------- |
| |
| namespace { |
| |
| static jfieldID field_context; |
| |
| jclass clazz_deviceInfo; |
| jclass clazz_storageInfo; |
| jclass clazz_objectInfo; |
| jclass clazz_event; |
| jclass clazz_io_exception; |
| jclass clazz_operation_canceled_exception; |
| |
| jmethodID constructor_deviceInfo; |
| jmethodID constructor_storageInfo; |
| jmethodID constructor_objectInfo; |
| jmethodID constructor_event; |
| |
| // MtpDeviceInfo fields |
| static jfieldID field_deviceInfo_manufacturer; |
| static jfieldID field_deviceInfo_model; |
| static jfieldID field_deviceInfo_version; |
| static jfieldID field_deviceInfo_serialNumber; |
| static jfieldID field_deviceInfo_operationsSupported; |
| static jfieldID field_deviceInfo_eventsSupported; |
| |
| // MtpStorageInfo fields |
| static jfieldID field_storageInfo_storageId; |
| static jfieldID field_storageInfo_maxCapacity; |
| static jfieldID field_storageInfo_freeSpace; |
| static jfieldID field_storageInfo_description; |
| static jfieldID field_storageInfo_volumeIdentifier; |
| |
| // MtpObjectInfo fields |
| static jfieldID field_objectInfo_handle; |
| static jfieldID field_objectInfo_storageId; |
| static jfieldID field_objectInfo_format; |
| static jfieldID field_objectInfo_protectionStatus; |
| static jfieldID field_objectInfo_compressedSize; |
| static jfieldID field_objectInfo_thumbFormat; |
| static jfieldID field_objectInfo_thumbCompressedSize; |
| static jfieldID field_objectInfo_thumbPixWidth; |
| static jfieldID field_objectInfo_thumbPixHeight; |
| static jfieldID field_objectInfo_imagePixWidth; |
| static jfieldID field_objectInfo_imagePixHeight; |
| static jfieldID field_objectInfo_imagePixDepth; |
| static jfieldID field_objectInfo_parent; |
| static jfieldID field_objectInfo_associationType; |
| static jfieldID field_objectInfo_associationDesc; |
| static jfieldID field_objectInfo_sequenceNumber; |
| static jfieldID field_objectInfo_name; |
| static jfieldID field_objectInfo_dateCreated; |
| static jfieldID field_objectInfo_dateModified; |
| static jfieldID field_objectInfo_keywords; |
| |
| // MtpEvent fields |
| static jfieldID field_event_eventCode; |
| static jfieldID field_event_parameter1; |
| static jfieldID field_event_parameter2; |
| static jfieldID field_event_parameter3; |
| |
| class JavaArrayWriter { |
| public: |
| JavaArrayWriter(JNIEnv* env, jbyteArray array) : |
| mEnv(env), mArray(array), mSize(mEnv->GetArrayLength(mArray)) {} |
| bool write(void* data, uint32_t offset, uint32_t length) { |
| if (static_cast<uint32_t>(mSize) < offset + length) { |
| return false; |
| } |
| mEnv->SetByteArrayRegion(mArray, offset, length, static_cast<jbyte*>(data)); |
| return true; |
| } |
| static bool writeTo(void* data, uint32_t offset, uint32_t length, void* clientData) { |
| return static_cast<JavaArrayWriter*>(clientData)->write(data, offset, length); |
| } |
| |
| private: |
| JNIEnv* mEnv; |
| jbyteArray mArray; |
| jsize mSize; |
| }; |
| |
| } |
| |
| MtpDevice* get_device_from_object(JNIEnv* env, jobject javaDevice) |
| { |
| return (MtpDevice*)env->GetLongField(javaDevice, field_context); |
| } |
| |
| void fill_jobject_from_object_info(JNIEnv* env, jobject object, MtpObjectInfo* objectInfo) { |
| if (objectInfo->mHandle) |
| env->SetIntField(object, field_objectInfo_handle, objectInfo->mHandle); |
| if (objectInfo->mStorageID) |
| env->SetIntField(object, field_objectInfo_storageId, objectInfo->mStorageID); |
| if (objectInfo->mFormat) |
| env->SetIntField(object, field_objectInfo_format, objectInfo->mFormat); |
| if (objectInfo->mProtectionStatus) |
| env->SetIntField(object, field_objectInfo_protectionStatus, objectInfo->mProtectionStatus); |
| if (objectInfo->mCompressedSize) |
| env->SetIntField(object, field_objectInfo_compressedSize, objectInfo->mCompressedSize); |
| if (objectInfo->mThumbFormat) |
| env->SetIntField(object, field_objectInfo_thumbFormat, objectInfo->mThumbFormat); |
| if (objectInfo->mThumbCompressedSize) { |
| env->SetIntField(object, field_objectInfo_thumbCompressedSize, |
| objectInfo->mThumbCompressedSize); |
| } |
| if (objectInfo->mThumbPixWidth) |
| env->SetIntField(object, field_objectInfo_thumbPixWidth, objectInfo->mThumbPixWidth); |
| if (objectInfo->mThumbPixHeight) |
| env->SetIntField(object, field_objectInfo_thumbPixHeight, objectInfo->mThumbPixHeight); |
| if (objectInfo->mImagePixWidth) |
| env->SetIntField(object, field_objectInfo_imagePixWidth, objectInfo->mImagePixWidth); |
| if (objectInfo->mImagePixHeight) |
| env->SetIntField(object, field_objectInfo_imagePixHeight, objectInfo->mImagePixHeight); |
| if (objectInfo->mImagePixDepth) |
| env->SetIntField(object, field_objectInfo_imagePixDepth, objectInfo->mImagePixDepth); |
| if (objectInfo->mParent) |
| env->SetIntField(object, field_objectInfo_parent, objectInfo->mParent); |
| if (objectInfo->mAssociationType) |
| env->SetIntField(object, field_objectInfo_associationType, objectInfo->mAssociationType); |
| if (objectInfo->mAssociationDesc) |
| env->SetIntField(object, field_objectInfo_associationDesc, objectInfo->mAssociationDesc); |
| if (objectInfo->mSequenceNumber) |
| env->SetIntField(object, field_objectInfo_sequenceNumber, objectInfo->mSequenceNumber); |
| if (objectInfo->mName) |
| env->SetObjectField(object, field_objectInfo_name, env->NewStringUTF(objectInfo->mName)); |
| if (objectInfo->mDateCreated) |
| env->SetLongField(object, field_objectInfo_dateCreated, objectInfo->mDateCreated * 1000LL); |
| if (objectInfo->mDateModified) { |
| env->SetLongField(object, field_objectInfo_dateModified, |
| objectInfo->mDateModified * 1000LL); |
| } |
| if (objectInfo->mKeywords) { |
| env->SetObjectField(object, field_objectInfo_keywords, |
| env->NewStringUTF(objectInfo->mKeywords)); |
| } |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static jboolean |
| android_mtp_MtpDevice_open(JNIEnv *env, jobject thiz, jstring deviceName, jint fd) |
| { |
| const char *deviceNameStr = env->GetStringUTFChars(deviceName, NULL); |
| if (deviceNameStr == NULL) { |
| return JNI_FALSE; |
| } |
| |
| // The passed in fd is maintained by the UsbDeviceConnection |
| fd = dup(fd); |
| |
| MtpDevice* device = MtpDevice::open(deviceNameStr, fd); |
| env->ReleaseStringUTFChars(deviceName, deviceNameStr); |
| |
| if (device) |
| env->SetLongField(thiz, field_context, (jlong)device); |
| return (jboolean)(device != NULL); |
| } |
| |
| static void |
| android_mtp_MtpDevice_close(JNIEnv *env, jobject thiz) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (device) { |
| device->close(); |
| delete device; |
| env->SetLongField(thiz, field_context, 0); |
| } |
| } |
| |
| static jobject |
| android_mtp_MtpDevice_get_device_info(JNIEnv *env, jobject thiz) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (!device) { |
| ALOGD("android_mtp_MtpDevice_get_device_info device is null"); |
| return NULL; |
| } |
| std::unique_ptr<MtpDeviceInfo> deviceInfo(device->getDeviceInfo()); |
| if (!deviceInfo) { |
| ALOGD("android_mtp_MtpDevice_get_device_info deviceInfo is null"); |
| return NULL; |
| } |
| jobject info = env->NewObject(clazz_deviceInfo, constructor_deviceInfo); |
| if (info == NULL) { |
| ALOGE("Could not create a MtpDeviceInfo object"); |
| return NULL; |
| } |
| |
| if (deviceInfo->mManufacturer) |
| env->SetObjectField(info, field_deviceInfo_manufacturer, |
| env->NewStringUTF(deviceInfo->mManufacturer)); |
| if (deviceInfo->mModel) |
| env->SetObjectField(info, field_deviceInfo_model, |
| env->NewStringUTF(deviceInfo->mModel)); |
| if (deviceInfo->mVersion) |
| env->SetObjectField(info, field_deviceInfo_version, |
| env->NewStringUTF(deviceInfo->mVersion)); |
| if (deviceInfo->mSerial) |
| env->SetObjectField(info, field_deviceInfo_serialNumber, |
| env->NewStringUTF(deviceInfo->mSerial)); |
| assert(deviceInfo->mOperations); |
| { |
| const size_t size = deviceInfo->mOperations->size(); |
| ScopedLocalRef<jintArray> operations(env, static_cast<jintArray>(env->NewIntArray(size))); |
| { |
| ScopedIntArrayRW elements(env, operations.get()); |
| if (elements.get() == NULL) { |
| ALOGE("Could not create operationsSupported element."); |
| return NULL; |
| } |
| for (size_t i = 0; i < size; ++i) { |
| elements[i] = static_cast<int>(deviceInfo->mOperations->at(i)); |
| } |
| env->SetObjectField(info, field_deviceInfo_operationsSupported, operations.get()); |
| } |
| } |
| assert(deviceInfo->mEvents); |
| { |
| const size_t size = deviceInfo->mEvents->size(); |
| ScopedLocalRef<jintArray> events(env, static_cast<jintArray>(env->NewIntArray(size))); |
| { |
| ScopedIntArrayRW elements(env, events.get()); |
| if (elements.get() == NULL) { |
| ALOGE("Could not create eventsSupported element."); |
| return NULL; |
| } |
| for (size_t i = 0; i < size; ++i) { |
| elements[i] = static_cast<int>(deviceInfo->mEvents->at(i)); |
| } |
| env->SetObjectField(info, field_deviceInfo_eventsSupported, events.get()); |
| } |
| } |
| |
| return info; |
| } |
| |
| static jintArray |
| android_mtp_MtpDevice_get_storage_ids(JNIEnv *env, jobject thiz) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (!device) |
| return NULL; |
| MtpStorageIDList* storageIDs = device->getStorageIDs(); |
| if (!storageIDs) |
| return NULL; |
| |
| int length = storageIDs->size(); |
| jintArray array = env->NewIntArray(length); |
| // FIXME is this cast safe? |
| env->SetIntArrayRegion(array, 0, length, (const jint *)storageIDs->data()); |
| |
| delete storageIDs; |
| return array; |
| } |
| |
| static jobject |
| android_mtp_MtpDevice_get_storage_info(JNIEnv *env, jobject thiz, jint storageID) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (!device) |
| return NULL; |
| MtpStorageInfo* storageInfo = device->getStorageInfo(storageID); |
| if (!storageInfo) |
| return NULL; |
| |
| jobject info = env->NewObject(clazz_storageInfo, constructor_storageInfo); |
| if (info == NULL) { |
| ALOGE("Could not create a MtpStorageInfo object"); |
| delete storageInfo; |
| return NULL; |
| } |
| |
| if (storageInfo->mStorageID) |
| env->SetIntField(info, field_storageInfo_storageId, storageInfo->mStorageID); |
| if (storageInfo->mMaxCapacity) |
| env->SetLongField(info, field_storageInfo_maxCapacity, storageInfo->mMaxCapacity); |
| if (storageInfo->mFreeSpaceBytes) |
| env->SetLongField(info, field_storageInfo_freeSpace, storageInfo->mFreeSpaceBytes); |
| if (storageInfo->mStorageDescription) |
| env->SetObjectField(info, field_storageInfo_description, |
| env->NewStringUTF(storageInfo->mStorageDescription)); |
| if (storageInfo->mVolumeIdentifier) |
| env->SetObjectField(info, field_storageInfo_volumeIdentifier, |
| env->NewStringUTF(storageInfo->mVolumeIdentifier)); |
| |
| delete storageInfo; |
| return info; |
| } |
| |
| static jintArray |
| android_mtp_MtpDevice_get_object_handles(JNIEnv *env, jobject thiz, |
| jint storageID, jint format, jint objectID) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (!device) |
| return NULL; |
| MtpObjectHandleList* handles = device->getObjectHandles(storageID, format, objectID); |
| if (!handles) |
| return NULL; |
| |
| int length = handles->size(); |
| jintArray array = env->NewIntArray(length); |
| // FIXME is this cast safe? |
| env->SetIntArrayRegion(array, 0, length, (const jint *)handles->data()); |
| |
| delete handles; |
| return array; |
| } |
| |
| static jobject |
| android_mtp_MtpDevice_get_object_info(JNIEnv *env, jobject thiz, jint objectID) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (!device) |
| return NULL; |
| MtpObjectInfo* objectInfo = device->getObjectInfo(objectID); |
| if (!objectInfo) |
| return NULL; |
| jobject info = env->NewObject(clazz_objectInfo, constructor_objectInfo); |
| if (info == NULL) { |
| ALOGE("Could not create a MtpObjectInfo object"); |
| delete objectInfo; |
| return NULL; |
| } |
| |
| fill_jobject_from_object_info(env, info, objectInfo); |
| delete objectInfo; |
| return info; |
| } |
| |
| bool check_uint32_arg(JNIEnv *env, const char* name, jlong value, uint32_t* out) { |
| if (value < 0 || 0xffffffff < value) { |
| jniThrowException( |
| env, |
| "java/lang/IllegalArgumentException", |
| (std::string("argument must be a 32-bit unsigned integer: ") + name).c_str()); |
| return false; |
| } |
| *out = static_cast<uint32_t>(value); |
| return true; |
| } |
| |
| static jbyteArray |
| android_mtp_MtpDevice_get_object(JNIEnv *env, jobject thiz, jint objectID, jlong objectSizeLong) |
| { |
| uint32_t objectSize; |
| if (!check_uint32_arg(env, "objectSize", objectSizeLong, &objectSize)) { |
| return nullptr; |
| } |
| |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (!device) { |
| return nullptr; |
| } |
| |
| ScopedLocalRef<jbyteArray> array(env, env->NewByteArray(objectSize)); |
| if (!array.get()) { |
| jniThrowException(env, "java/lang/OutOfMemoryError", NULL); |
| return nullptr; |
| } |
| |
| JavaArrayWriter writer(env, array.get()); |
| |
| if (device->readObject(objectID, JavaArrayWriter::writeTo, objectSize, &writer)) { |
| return array.release(); |
| } |
| return nullptr; |
| } |
| |
| static jlong |
| android_mtp_MtpDevice_get_partial_object(JNIEnv *env, |
| jobject thiz, |
| jint objectID, |
| jlong offsetLong, |
| jlong sizeLong, |
| jbyteArray array) |
| { |
| if (!array) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", "Array must not be null."); |
| return -1; |
| } |
| |
| uint32_t offset; |
| uint32_t size; |
| if (!check_uint32_arg(env, "offset", offsetLong, &offset) || |
| !check_uint32_arg(env, "size", sizeLong, &size)) { |
| return -1; |
| } |
| |
| MtpDevice* const device = get_device_from_object(env, thiz); |
| if (!device) { |
| jniThrowException(env, "java/io/IOException", "Failed to obtain MtpDevice."); |
| return -1; |
| } |
| |
| JavaArrayWriter writer(env, array); |
| uint32_t written_size; |
| const bool success = device->readPartialObject( |
| objectID, offset, size, &written_size, JavaArrayWriter::writeTo, &writer); |
| if (!success) { |
| jniThrowException(env, "java/io/IOException", "Failed to read data."); |
| return -1; |
| } |
| return static_cast<jlong>(written_size); |
| } |
| |
| static jint |
| android_mtp_MtpDevice_get_partial_object_64(JNIEnv *env, |
| jobject thiz, |
| jint objectID, |
| jlong offset, |
| jlong size, |
| jbyteArray array) { |
| if (!array) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", "Array must not be null."); |
| return -1; |
| } |
| |
| if (offset < 0) { |
| jniThrowException( |
| env, |
| "java/lang/IllegalArgumentException", |
| "Offset argument must not be a negative value."); |
| return -1; |
| } |
| |
| if (size < 0 || 0xffffffffL < size) { |
| jniThrowException( |
| env, |
| "java/lang/IllegalArgumentException", |
| "Size argument must be a 32-bit unsigned integer."); |
| return -1; |
| } |
| |
| MtpDevice* const device = get_device_from_object(env, thiz); |
| if (!device) { |
| jniThrowException(env, "java/io/IOException", "Failed to obtain MtpDevice."); |
| return -1; |
| } |
| |
| const uint32_t native_object_handle = static_cast<uint32_t>(objectID); |
| const uint64_t native_offset = static_cast<uint64_t>(offset); |
| const uint32_t native_size = static_cast<uint32_t>(size); |
| |
| JavaArrayWriter writer(env, array); |
| uint32_t written_size; |
| const bool success = device->readPartialObject64( |
| native_object_handle, |
| native_offset, |
| native_size, |
| &written_size, |
| JavaArrayWriter::writeTo, |
| &writer); |
| if (!success) { |
| jniThrowException(env, "java/io/IOException", "Failed to read data."); |
| return -1; |
| } |
| return static_cast<jint>(written_size); |
| } |
| |
| static jbyteArray |
| android_mtp_MtpDevice_get_thumbnail(JNIEnv *env, jobject thiz, jint objectID) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (!device) |
| return NULL; |
| |
| int length; |
| void* thumbnail = device->getThumbnail(objectID, length); |
| if (! thumbnail) |
| return NULL; |
| jbyteArray array = env->NewByteArray(length); |
| env->SetByteArrayRegion(array, 0, length, (const jbyte *)thumbnail); |
| |
| free(thumbnail); |
| return array; |
| } |
| |
| static jboolean |
| android_mtp_MtpDevice_delete_object(JNIEnv *env, jobject thiz, jint object_id) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (device && device->deleteObject(object_id)) { |
| return JNI_TRUE; |
| } else { |
| return JNI_FALSE; |
| } |
| } |
| |
| static jint |
| android_mtp_MtpDevice_get_parent(JNIEnv *env, jobject thiz, jint object_id) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (device) |
| return static_cast<jint>(device->getParent(object_id)); |
| else |
| return -1; |
| } |
| |
| static jint |
| android_mtp_MtpDevice_get_storage_id(JNIEnv *env, jobject thiz, jint object_id) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (device) |
| return static_cast<jint>(device->getStorageID(object_id)); |
| else |
| return -1; |
| } |
| |
| static jboolean |
| android_mtp_MtpDevice_import_file(JNIEnv *env, jobject thiz, jint object_id, jstring dest_path) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (device) { |
| const char *destPathStr = env->GetStringUTFChars(dest_path, NULL); |
| if (destPathStr == NULL) { |
| return JNI_FALSE; |
| } |
| |
| jboolean result = device->readObject(object_id, destPathStr, AID_SDCARD_RW, 0664); |
| env->ReleaseStringUTFChars(dest_path, destPathStr); |
| return result; |
| } |
| |
| return JNI_FALSE; |
| } |
| |
| static jboolean |
| android_mtp_MtpDevice_import_file_to_fd(JNIEnv *env, jobject thiz, jint object_id, jint fd) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (device) |
| return device->readObject(object_id, fd); |
| else |
| return JNI_FALSE; |
| } |
| |
| static jboolean |
| android_mtp_MtpDevice_send_object( |
| JNIEnv *env, jobject thiz, jint object_id, jlong sizeLong, jint fd) |
| { |
| uint32_t size; |
| if (!check_uint32_arg(env, "size", sizeLong, &size)) |
| return JNI_FALSE; |
| |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (!device) |
| return JNI_FALSE; |
| |
| return device->sendObject(object_id, size, fd); |
| } |
| |
| static jobject |
| android_mtp_MtpDevice_send_object_info(JNIEnv *env, jobject thiz, jobject info) |
| { |
| MtpDevice* device = get_device_from_object(env, thiz); |
| if (!device) { |
| return NULL; |
| } |
| |
| // Updating existing objects is not supported. |
| if (env->GetIntField(info, field_objectInfo_handle) != -1) { |
| return NULL; |
| } |
| |
| MtpObjectInfo* object_info = new MtpObjectInfo(-1); |
| object_info->mStorageID = env->GetIntField(info, field_objectInfo_storageId); |
| object_info->mFormat = env->GetIntField(info, field_objectInfo_format); |
| object_info->mProtectionStatus = env->GetIntField(info, field_objectInfo_protectionStatus); |
| object_info->mCompressedSize = env->GetIntField(info, field_objectInfo_compressedSize); |
| object_info->mThumbFormat = env->GetIntField(info, field_objectInfo_thumbFormat); |
| object_info->mThumbCompressedSize = |
| env->GetIntField(info, field_objectInfo_thumbCompressedSize); |
| object_info->mThumbPixWidth = env->GetIntField(info, field_objectInfo_thumbPixWidth); |
| object_info->mThumbPixHeight = env->GetIntField(info, field_objectInfo_thumbPixHeight); |
| object_info->mImagePixWidth = env->GetIntField(info, field_objectInfo_imagePixWidth); |
| object_info->mImagePixHeight = env->GetIntField(info, field_objectInfo_imagePixHeight); |
| object_info->mImagePixDepth = env->GetIntField(info, field_objectInfo_imagePixDepth); |
| object_info->mParent = env->GetIntField(info, field_objectInfo_parent); |
| object_info->mAssociationType = env->GetIntField(info, field_objectInfo_associationType); |
| object_info->mAssociationDesc = env->GetIntField(info, field_objectInfo_associationDesc); |
| object_info->mSequenceNumber = env->GetIntField(info, field_objectInfo_sequenceNumber); |
| |
| jstring name_jstring = (jstring) env->GetObjectField(info, field_objectInfo_name); |
| if (name_jstring != NULL) { |
| const char* name_string = env->GetStringUTFChars(name_jstring, NULL); |
| object_info->mName = strdup(name_string); |
| env->ReleaseStringUTFChars(name_jstring, name_string); |
| } |
| |
| object_info->mDateCreated = env->GetLongField(info, field_objectInfo_dateCreated) / 1000LL; |
| object_info->mDateModified = env->GetLongField(info, field_objectInfo_dateModified) / 1000LL; |
| |
| jstring keywords_jstring = (jstring) env->GetObjectField(info, field_objectInfo_keywords); |
| if (keywords_jstring != NULL) { |
| const char* keywords_string = env->GetStringUTFChars(keywords_jstring, NULL); |
| object_info->mKeywords = strdup(keywords_string); |
| env->ReleaseStringUTFChars(keywords_jstring, keywords_string); |
| } |
| |
| int object_handle = device->sendObjectInfo(object_info); |
| if (object_handle == -1) { |
| delete object_info; |
| return NULL; |
| } |
| |
| object_info->mHandle = object_handle; |
| jobject result = env->NewObject(clazz_objectInfo, constructor_objectInfo); |
| if (result == NULL) { |
| ALOGE("Could not create a MtpObjectInfo object"); |
| delete object_info; |
| return NULL; |
| } |
| |
| fill_jobject_from_object_info(env, result, object_info); |
| delete object_info; |
| return result; |
| } |
| |
| static jint android_mtp_MtpDevice_submit_event_request(JNIEnv *env, jobject thiz) |
| { |
| MtpDevice* const device = get_device_from_object(env, thiz); |
| if (!device) { |
| env->ThrowNew(clazz_io_exception, ""); |
| return -1; |
| } |
| return device->submitEventRequest(); |
| } |
| |
| static jobject android_mtp_MtpDevice_reap_event_request(JNIEnv *env, jobject thiz, jint seq) |
| { |
| MtpDevice* const device = get_device_from_object(env, thiz); |
| if (!device) { |
| env->ThrowNew(clazz_io_exception, ""); |
| return NULL; |
| } |
| uint32_t parameters[3]; |
| const int eventCode = device->reapEventRequest(seq, ¶meters); |
| if (eventCode <= 0) { |
| env->ThrowNew(clazz_operation_canceled_exception, ""); |
| return NULL; |
| } |
| jobject result = env->NewObject(clazz_event, constructor_event); |
| env->SetIntField(result, field_event_eventCode, eventCode); |
| env->SetIntField(result, field_event_parameter1, static_cast<jint>(parameters[0])); |
| env->SetIntField(result, field_event_parameter2, static_cast<jint>(parameters[1])); |
| env->SetIntField(result, field_event_parameter3, static_cast<jint>(parameters[2])); |
| return result; |
| } |
| |
| static void android_mtp_MtpDevice_discard_event_request(JNIEnv *env, jobject thiz, jint seq) |
| { |
| MtpDevice* const device = get_device_from_object(env, thiz); |
| if (!device) { |
| return; |
| } |
| device->discardEventRequest(seq); |
| } |
| |
| // Returns object size in 64-bit integer. If the MTP device does not support the property, it |
| // throws IOException. |
| static jlong android_mtp_MtpDevice_get_object_size_long( |
| JNIEnv *env, jobject thiz, jint handle, jint format) { |
| MtpDevice* const device = get_device_from_object(env, thiz); |
| if (!device) { |
| env->ThrowNew(clazz_io_exception, "Failed to obtain MtpDevice."); |
| return 0; |
| } |
| |
| std::unique_ptr<MtpProperty> property( |
| device->getObjectPropDesc(MTP_PROPERTY_OBJECT_SIZE, format)); |
| if (!property) { |
| env->ThrowNew(clazz_io_exception, "Failed to obtain property desc."); |
| return 0; |
| } |
| |
| if (property->getDataType() != MTP_TYPE_UINT64) { |
| env->ThrowNew(clazz_io_exception, "Unexpected property data type."); |
| return 0; |
| } |
| |
| if (!device->getObjectPropValue(handle, property.get())) { |
| env->ThrowNew(clazz_io_exception, "Failed to obtain property value."); |
| return 0; |
| } |
| |
| const jlong object_size = static_cast<jlong>(property->getCurrentValue().u.u64); |
| if (object_size < 0) { |
| env->ThrowNew(clazz_io_exception, "Object size is too large to express as jlong."); |
| return 0; |
| } |
| |
| return object_size; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static const JNINativeMethod gMethods[] = { |
| {"native_open", "(Ljava/lang/String;I)Z", |
| (void *)android_mtp_MtpDevice_open}, |
| {"native_close", "()V", (void *)android_mtp_MtpDevice_close}, |
| {"native_get_device_info", "()Landroid/mtp/MtpDeviceInfo;", |
| (void *)android_mtp_MtpDevice_get_device_info}, |
| {"native_get_storage_ids", "()[I", (void *)android_mtp_MtpDevice_get_storage_ids}, |
| {"native_get_storage_info", "(I)Landroid/mtp/MtpStorageInfo;", |
| (void *)android_mtp_MtpDevice_get_storage_info}, |
| {"native_get_object_handles","(III)[I", |
| (void *)android_mtp_MtpDevice_get_object_handles}, |
| {"native_get_object_info", "(I)Landroid/mtp/MtpObjectInfo;", |
| (void *)android_mtp_MtpDevice_get_object_info}, |
| {"native_get_object", "(IJ)[B",(void *)android_mtp_MtpDevice_get_object}, |
| {"native_get_partial_object", "(IJJ[B)J", (void *)android_mtp_MtpDevice_get_partial_object}, |
| {"native_get_partial_object_64", "(IJJ[B)I", |
| (void *)android_mtp_MtpDevice_get_partial_object_64}, |
| {"native_get_thumbnail", "(I)[B",(void *)android_mtp_MtpDevice_get_thumbnail}, |
| {"native_delete_object", "(I)Z", (void *)android_mtp_MtpDevice_delete_object}, |
| {"native_get_parent", "(I)I", (void *)android_mtp_MtpDevice_get_parent}, |
| {"native_get_storage_id", "(I)I", (void *)android_mtp_MtpDevice_get_storage_id}, |
| {"native_import_file", "(ILjava/lang/String;)Z", |
| (void *)android_mtp_MtpDevice_import_file}, |
| {"native_import_file", "(II)Z",(void *)android_mtp_MtpDevice_import_file_to_fd}, |
| {"native_send_object", "(IJI)Z",(void *)android_mtp_MtpDevice_send_object}, |
| {"native_send_object_info", "(Landroid/mtp/MtpObjectInfo;)Landroid/mtp/MtpObjectInfo;", |
| (void *)android_mtp_MtpDevice_send_object_info}, |
| {"native_submit_event_request", "()I", (void *)android_mtp_MtpDevice_submit_event_request}, |
| {"native_reap_event_request", "(I)Landroid/mtp/MtpEvent;", |
| (void *)android_mtp_MtpDevice_reap_event_request}, |
| {"native_discard_event_request", "(I)V", (void *)android_mtp_MtpDevice_discard_event_request}, |
| |
| {"native_get_object_size_long", "(II)J", (void *)android_mtp_MtpDevice_get_object_size_long}, |
| }; |
| |
| int register_android_mtp_MtpDevice(JNIEnv *env) |
| { |
| jclass clazz; |
| |
| ALOGD("register_android_mtp_MtpDevice\n"); |
| |
| clazz = env->FindClass("android/mtp/MtpDeviceInfo"); |
| if (clazz == NULL) { |
| ALOGE("Can't find android/mtp/MtpDeviceInfo"); |
| return -1; |
| } |
| constructor_deviceInfo = env->GetMethodID(clazz, "<init>", "()V"); |
| if (constructor_deviceInfo == NULL) { |
| ALOGE("Can't find android/mtp/MtpDeviceInfo constructor"); |
| return -1; |
| } |
| field_deviceInfo_manufacturer = env->GetFieldID(clazz, "mManufacturer", "Ljava/lang/String;"); |
| if (field_deviceInfo_manufacturer == NULL) { |
| ALOGE("Can't find MtpDeviceInfo.mManufacturer"); |
| return -1; |
| } |
| field_deviceInfo_model = env->GetFieldID(clazz, "mModel", "Ljava/lang/String;"); |
| if (field_deviceInfo_model == NULL) { |
| ALOGE("Can't find MtpDeviceInfo.mModel"); |
| return -1; |
| } |
| field_deviceInfo_version = env->GetFieldID(clazz, "mVersion", "Ljava/lang/String;"); |
| if (field_deviceInfo_version == NULL) { |
| ALOGE("Can't find MtpDeviceInfo.mVersion"); |
| return -1; |
| } |
| field_deviceInfo_serialNumber = env->GetFieldID(clazz, "mSerialNumber", "Ljava/lang/String;"); |
| if (field_deviceInfo_serialNumber == NULL) { |
| ALOGE("Can't find MtpDeviceInfo.mSerialNumber"); |
| return -1; |
| } |
| field_deviceInfo_operationsSupported = env->GetFieldID(clazz, "mOperationsSupported", "[I"); |
| if (field_deviceInfo_operationsSupported == NULL) { |
| ALOGE("Can't find MtpDeviceInfo.mOperationsSupported"); |
| return -1; |
| } |
| field_deviceInfo_eventsSupported = env->GetFieldID(clazz, "mEventsSupported", "[I"); |
| if (field_deviceInfo_eventsSupported == NULL) { |
| ALOGE("Can't find MtpDeviceInfo.mEventsSupported"); |
| return -1; |
| } |
| clazz_deviceInfo = (jclass)env->NewGlobalRef(clazz); |
| |
| clazz = env->FindClass("android/mtp/MtpStorageInfo"); |
| if (clazz == NULL) { |
| ALOGE("Can't find android/mtp/MtpStorageInfo"); |
| return -1; |
| } |
| constructor_storageInfo = env->GetMethodID(clazz, "<init>", "()V"); |
| if (constructor_storageInfo == NULL) { |
| ALOGE("Can't find android/mtp/MtpStorageInfo constructor"); |
| return -1; |
| } |
| field_storageInfo_storageId = env->GetFieldID(clazz, "mStorageId", "I"); |
| if (field_storageInfo_storageId == NULL) { |
| ALOGE("Can't find MtpStorageInfo.mStorageId"); |
| return -1; |
| } |
| field_storageInfo_maxCapacity = env->GetFieldID(clazz, "mMaxCapacity", "J"); |
| if (field_storageInfo_maxCapacity == NULL) { |
| ALOGE("Can't find MtpStorageInfo.mMaxCapacity"); |
| return -1; |
| } |
| field_storageInfo_freeSpace = env->GetFieldID(clazz, "mFreeSpace", "J"); |
| if (field_storageInfo_freeSpace == NULL) { |
| ALOGE("Can't find MtpStorageInfo.mFreeSpace"); |
| return -1; |
| } |
| field_storageInfo_description = env->GetFieldID(clazz, "mDescription", "Ljava/lang/String;"); |
| if (field_storageInfo_description == NULL) { |
| ALOGE("Can't find MtpStorageInfo.mDescription"); |
| return -1; |
| } |
| field_storageInfo_volumeIdentifier = env->GetFieldID(clazz, "mVolumeIdentifier", "Ljava/lang/String;"); |
| if (field_storageInfo_volumeIdentifier == NULL) { |
| ALOGE("Can't find MtpStorageInfo.mVolumeIdentifier"); |
| return -1; |
| } |
| clazz_storageInfo = (jclass)env->NewGlobalRef(clazz); |
| |
| clazz = env->FindClass("android/mtp/MtpObjectInfo"); |
| if (clazz == NULL) { |
| ALOGE("Can't find android/mtp/MtpObjectInfo"); |
| return -1; |
| } |
| constructor_objectInfo = env->GetMethodID(clazz, "<init>", "()V"); |
| if (constructor_objectInfo == NULL) { |
| ALOGE("Can't find android/mtp/MtpObjectInfo constructor"); |
| return -1; |
| } |
| field_objectInfo_handle = env->GetFieldID(clazz, "mHandle", "I"); |
| if (field_objectInfo_handle == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mHandle"); |
| return -1; |
| } |
| field_objectInfo_storageId = env->GetFieldID(clazz, "mStorageId", "I"); |
| if (field_objectInfo_storageId == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mStorageId"); |
| return -1; |
| } |
| field_objectInfo_format = env->GetFieldID(clazz, "mFormat", "I"); |
| if (field_objectInfo_format == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mFormat"); |
| return -1; |
| } |
| field_objectInfo_protectionStatus = env->GetFieldID(clazz, "mProtectionStatus", "I"); |
| if (field_objectInfo_protectionStatus == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mProtectionStatus"); |
| return -1; |
| } |
| field_objectInfo_compressedSize = env->GetFieldID(clazz, "mCompressedSize", "I"); |
| if (field_objectInfo_compressedSize == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mCompressedSize"); |
| return -1; |
| } |
| field_objectInfo_thumbFormat = env->GetFieldID(clazz, "mThumbFormat", "I"); |
| if (field_objectInfo_thumbFormat == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mThumbFormat"); |
| return -1; |
| } |
| field_objectInfo_thumbCompressedSize = env->GetFieldID(clazz, "mThumbCompressedSize", "I"); |
| if (field_objectInfo_thumbCompressedSize == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mThumbCompressedSize"); |
| return -1; |
| } |
| field_objectInfo_thumbPixWidth = env->GetFieldID(clazz, "mThumbPixWidth", "I"); |
| if (field_objectInfo_thumbPixWidth == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mThumbPixWidth"); |
| return -1; |
| } |
| field_objectInfo_thumbPixHeight = env->GetFieldID(clazz, "mThumbPixHeight", "I"); |
| if (field_objectInfo_thumbPixHeight == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mThumbPixHeight"); |
| return -1; |
| } |
| field_objectInfo_imagePixWidth = env->GetFieldID(clazz, "mImagePixWidth", "I"); |
| if (field_objectInfo_imagePixWidth == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mImagePixWidth"); |
| return -1; |
| } |
| field_objectInfo_imagePixHeight = env->GetFieldID(clazz, "mImagePixHeight", "I"); |
| if (field_objectInfo_imagePixHeight == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mImagePixHeight"); |
| return -1; |
| } |
| field_objectInfo_imagePixDepth = env->GetFieldID(clazz, "mImagePixDepth", "I"); |
| if (field_objectInfo_imagePixDepth == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mImagePixDepth"); |
| return -1; |
| } |
| field_objectInfo_parent = env->GetFieldID(clazz, "mParent", "I"); |
| if (field_objectInfo_parent == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mParent"); |
| return -1; |
| } |
| field_objectInfo_associationType = env->GetFieldID(clazz, "mAssociationType", "I"); |
| if (field_objectInfo_associationType == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mAssociationType"); |
| return -1; |
| } |
| field_objectInfo_associationDesc = env->GetFieldID(clazz, "mAssociationDesc", "I"); |
| if (field_objectInfo_associationDesc == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mAssociationDesc"); |
| return -1; |
| } |
| field_objectInfo_sequenceNumber = env->GetFieldID(clazz, "mSequenceNumber", "I"); |
| if (field_objectInfo_sequenceNumber == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mSequenceNumber"); |
| return -1; |
| } |
| field_objectInfo_name = env->GetFieldID(clazz, "mName", "Ljava/lang/String;"); |
| if (field_objectInfo_name == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mName"); |
| return -1; |
| } |
| field_objectInfo_dateCreated = env->GetFieldID(clazz, "mDateCreated", "J"); |
| if (field_objectInfo_dateCreated == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mDateCreated"); |
| return -1; |
| } |
| field_objectInfo_dateModified = env->GetFieldID(clazz, "mDateModified", "J"); |
| if (field_objectInfo_dateModified == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mDateModified"); |
| return -1; |
| } |
| field_objectInfo_keywords = env->GetFieldID(clazz, "mKeywords", "Ljava/lang/String;"); |
| if (field_objectInfo_keywords == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mKeywords"); |
| return -1; |
| } |
| clazz_objectInfo = (jclass)env->NewGlobalRef(clazz); |
| |
| clazz = env->FindClass("android/mtp/MtpEvent"); |
| if (clazz == NULL) { |
| ALOGE("Can't find android/mtp/MtpEvent"); |
| return -1; |
| } |
| constructor_event = env->GetMethodID(clazz, "<init>", "()V"); |
| if (constructor_event == NULL) { |
| ALOGE("Can't find android/mtp/MtpEvent constructor"); |
| return -1; |
| } |
| field_event_eventCode = env->GetFieldID(clazz, "mEventCode", "I"); |
| if (field_event_eventCode == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mEventCode"); |
| return -1; |
| } |
| field_event_parameter1 = env->GetFieldID(clazz, "mParameter1", "I"); |
| if (field_event_parameter1 == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mParameter1"); |
| return -1; |
| } |
| field_event_parameter2 = env->GetFieldID(clazz, "mParameter2", "I"); |
| if (field_event_parameter2 == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mParameter2"); |
| return -1; |
| } |
| field_event_parameter3 = env->GetFieldID(clazz, "mParameter3", "I"); |
| if (field_event_parameter3 == NULL) { |
| ALOGE("Can't find MtpObjectInfo.mParameter3"); |
| return -1; |
| } |
| clazz_event = (jclass)env->NewGlobalRef(clazz); |
| |
| clazz = env->FindClass("android/mtp/MtpDevice"); |
| if (clazz == NULL) { |
| ALOGE("Can't find android/mtp/MtpDevice"); |
| return -1; |
| } |
| field_context = env->GetFieldID(clazz, "mNativeContext", "J"); |
| if (field_context == NULL) { |
| ALOGE("Can't find MtpDevice.mNativeContext"); |
| return -1; |
| } |
| clazz = env->FindClass("java/io/IOException"); |
| if (clazz == NULL) { |
| ALOGE("Can't find java.io.IOException"); |
| return -1; |
| } |
| clazz_io_exception = (jclass)env->NewGlobalRef(clazz); |
| clazz = env->FindClass("android/os/OperationCanceledException"); |
| if (clazz == NULL) { |
| ALOGE("Can't find android.os.OperationCanceledException"); |
| return -1; |
| } |
| clazz_operation_canceled_exception = (jclass)env->NewGlobalRef(clazz); |
| |
| return AndroidRuntime::registerNativeMethods(env, |
| "android/mtp/MtpDevice", gMethods, NELEM(gMethods)); |
| } |