/*
* 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_TAG "MtpDatabaseJNI"
#include "utils/Log.h"
#include <assert.h>
#include <fcntl.h>
#include <inttypes.h>
#include <limits.h>
#include <stdio.h>
#include <unistd.h>
#include "jni.h"
#include "JNIHelp.h"
#include "android_runtime/AndroidRuntime.h"
#include "android_runtime/Log.h"
#include "MtpDatabase.h"
#include "MtpDataPacket.h"
#include "MtpObjectInfo.h"
#include "MtpProperty.h"
#include "MtpStringBuffer.h"
#include "MtpUtils.h"
#include "mtp.h"
extern "C" {
#include "libexif/exif-content.h"
#include "libexif/exif-data.h"
#include "libexif/exif-tag.h"
#include "libexif/exif-utils.h"
}
using namespace android;
// ----------------------------------------------------------------------------
static jmethodID method_beginSendObject;
static jmethodID method_endSendObject;
static jmethodID method_getObjectList;
static jmethodID method_getNumObjects;
static jmethodID method_getSupportedPlaybackFormats;
static jmethodID method_getSupportedCaptureFormats;
static jmethodID method_getSupportedObjectProperties;
static jmethodID method_getSupportedDeviceProperties;
static jmethodID method_setObjectProperty;
static jmethodID method_getDeviceProperty;
static jmethodID method_setDeviceProperty;
static jmethodID method_getObjectPropertyList;
static jmethodID method_getObjectInfo;
static jmethodID method_getObjectFilePath;
static jmethodID method_deleteFile;
static jmethodID method_getObjectReferences;
static jmethodID method_setObjectReferences;
static jmethodID method_sessionStarted;
static jmethodID method_sessionEnded;
static jfieldID field_context;
static jfieldID field_batteryLevel;
static jfieldID field_batteryScale;
// MtpPropertyList fields
static jfieldID field_mCount;
static jfieldID field_mResult;
static jfieldID field_mObjectHandles;
static jfieldID field_mPropertyCodes;
static jfieldID field_mDataTypes;
static jfieldID field_mLongValues;
static jfieldID field_mStringValues;
MtpDatabase* getMtpDatabase(JNIEnv *env, jobject database) {
return (MtpDatabase *)env->GetLongField(database, field_context);
}
// ----------------------------------------------------------------------------
class MyMtpDatabase : public MtpDatabase {
private:
jobject mDatabase;
jintArray mIntBuffer;
jlongArray mLongBuffer;
jcharArray mStringBuffer;
public:
MyMtpDatabase(JNIEnv *env, jobject client);
virtual ~MyMtpDatabase();
void cleanup(JNIEnv *env);
virtual MtpObjectHandle beginSendObject(const char* path,
MtpObjectFormat format,
MtpObjectHandle parent,
MtpStorageID storage,
uint64_t size,
time_t modified);
virtual void endSendObject(const char* path,
MtpObjectHandle handle,
MtpObjectFormat format,
bool succeeded);
virtual MtpObjectHandleList* getObjectList(MtpStorageID storageID,
MtpObjectFormat format,
MtpObjectHandle parent);
virtual int getNumObjects(MtpStorageID storageID,
MtpObjectFormat format,
MtpObjectHandle parent);
// callee should delete[] the results from these
// results can be NULL
virtual MtpObjectFormatList* getSupportedPlaybackFormats();
virtual MtpObjectFormatList* getSupportedCaptureFormats();
virtual MtpObjectPropertyList* getSupportedObjectProperties(MtpObjectFormat format);
virtual MtpDevicePropertyList* getSupportedDeviceProperties();
virtual MtpResponseCode getObjectPropertyValue(MtpObjectHandle handle,
MtpObjectProperty property,
MtpDataPacket& packet);
virtual MtpResponseCode setObjectPropertyValue(MtpObjectHandle handle,
MtpObjectProperty property,
MtpDataPacket& packet);
virtual MtpResponseCode getDevicePropertyValue(MtpDeviceProperty property,
MtpDataPacket& packet);
virtual MtpResponseCode setDevicePropertyValue(MtpDeviceProperty property,
MtpDataPacket& packet);
virtual MtpResponseCode resetDeviceProperty(MtpDeviceProperty property);
virtual MtpResponseCode getObjectPropertyList(MtpObjectHandle handle,
uint32_t format, uint32_t property,
int groupCode, int depth,
MtpDataPacket& packet);
virtual MtpResponseCode getObjectInfo(MtpObjectHandle handle,
MtpObjectInfo& info);
virtual void* getThumbnail(MtpObjectHandle handle, size_t& outThumbSize);
virtual MtpResponseCode getObjectFilePath(MtpObjectHandle handle,
MtpString& outFilePath,
int64_t& outFileLength,
MtpObjectFormat& outFormat);
virtual MtpResponseCode deleteFile(MtpObjectHandle handle);
bool getObjectPropertyInfo(MtpObjectProperty property, int& type);
bool getDevicePropertyInfo(MtpDeviceProperty property, int& type);
virtual MtpObjectHandleList* getObjectReferences(MtpObjectHandle handle);
virtual MtpResponseCode setObjectReferences(MtpObjectHandle handle,
MtpObjectHandleList* references);
virtual MtpProperty* getObjectPropertyDesc(MtpObjectProperty property,
MtpObjectFormat format);
virtual MtpProperty* getDevicePropertyDesc(MtpDeviceProperty property);
virtual void sessionStarted();
virtual void sessionEnded();
};
// ----------------------------------------------------------------------------
static void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
if (env->ExceptionCheck()) {
ALOGE("An exception was thrown by callback '%s'.", methodName);
LOGE_EX(env);
env->ExceptionClear();
}
}
// ----------------------------------------------------------------------------
MyMtpDatabase::MyMtpDatabase(JNIEnv *env, jobject client)
: mDatabase(env->NewGlobalRef(client)),
mIntBuffer(NULL),
mLongBuffer(NULL),
mStringBuffer(NULL)
{
// create buffers for out arguments
// we don't need to be thread-safe so this is OK
jintArray intArray = env->NewIntArray(3);
if (!intArray) {
return; // Already threw.
}
mIntBuffer = (jintArray)env->NewGlobalRef(intArray);
jlongArray longArray = env->NewLongArray(2);
if (!longArray) {
return; // Already threw.
}
mLongBuffer = (jlongArray)env->NewGlobalRef(longArray);
// Needs to be long enough to hold a file path for getObjectFilePath()
jcharArray charArray = env->NewCharArray(PATH_MAX + 1);
if (!charArray) {
return; // Already threw.
}
mStringBuffer = (jcharArray)env->NewGlobalRef(charArray);
}
void MyMtpDatabase::cleanup(JNIEnv *env) {
env->DeleteGlobalRef(mDatabase);
env->DeleteGlobalRef(mIntBuffer);
env->DeleteGlobalRef(mLongBuffer);
env->DeleteGlobalRef(mStringBuffer);
}
MyMtpDatabase::~MyMtpDatabase() {
}
MtpObjectHandle MyMtpDatabase::beginSendObject(const char* path,
MtpObjectFormat format,
MtpObjectHandle parent,
MtpStorageID storage,
uint64_t size,
time_t modified) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jstring pathStr = env->NewStringUTF(path);
MtpObjectHandle result = env->CallIntMethod(mDatabase, method_beginSendObject,
pathStr, (jint)format, (jint)parent, (jint)storage,
(jlong)size, (jlong)modified);
if (pathStr)
env->DeleteLocalRef(pathStr);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
void MyMtpDatabase::endSendObject(const char* path, MtpObjectHandle handle,
MtpObjectFormat format, bool succeeded) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jstring pathStr = env->NewStringUTF(path);
env->CallVoidMethod(mDatabase, method_endSendObject, pathStr,
(jint)handle, (jint)format, (jboolean)succeeded);
if (pathStr)
env->DeleteLocalRef(pathStr);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
}
MtpObjectHandleList* MyMtpDatabase::getObjectList(MtpStorageID storageID,
MtpObjectFormat format,
MtpObjectHandle parent) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jintArray array = (jintArray)env->CallObjectMethod(mDatabase, method_getObjectList,
(jint)storageID, (jint)format, (jint)parent);
if (!array)
return NULL;
MtpObjectHandleList* list = new MtpObjectHandleList();
jint* handles = env->GetIntArrayElements(array, 0);
jsize length = env->GetArrayLength(array);
for (int i = 0; i < length; i++)
list->push(handles[i]);
env->ReleaseIntArrayElements(array, handles, 0);
env->DeleteLocalRef(array);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return list;
}
int MyMtpDatabase::getNumObjects(MtpStorageID storageID,
MtpObjectFormat format,
MtpObjectHandle parent) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
int result = env->CallIntMethod(mDatabase, method_getNumObjects,
(jint)storageID, (jint)format, (jint)parent);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
MtpObjectFormatList* MyMtpDatabase::getSupportedPlaybackFormats() {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jintArray array = (jintArray)env->CallObjectMethod(mDatabase,
method_getSupportedPlaybackFormats);
if (!array)
return NULL;
MtpObjectFormatList* list = new MtpObjectFormatList();
jint* formats = env->GetIntArrayElements(array, 0);
jsize length = env->GetArrayLength(array);
for (int i = 0; i < length; i++)
list->push(formats[i]);
env->ReleaseIntArrayElements(array, formats, 0);
env->DeleteLocalRef(array);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return list;
}
MtpObjectFormatList* MyMtpDatabase::getSupportedCaptureFormats() {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jintArray array = (jintArray)env->CallObjectMethod(mDatabase,
method_getSupportedCaptureFormats);
if (!array)
return NULL;
MtpObjectFormatList* list = new MtpObjectFormatList();
jint* formats = env->GetIntArrayElements(array, 0);
jsize length = env->GetArrayLength(array);
for (int i = 0; i < length; i++)
list->push(formats[i]);
env->ReleaseIntArrayElements(array, formats, 0);
env->DeleteLocalRef(array);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return list;
}
MtpObjectPropertyList* MyMtpDatabase::getSupportedObjectProperties(MtpObjectFormat format) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jintArray array = (jintArray)env->CallObjectMethod(mDatabase,
method_getSupportedObjectProperties, (jint)format);
if (!array)
return NULL;
MtpObjectPropertyList* list = new MtpObjectPropertyList();
jint* properties = env->GetIntArrayElements(array, 0);
jsize length = env->GetArrayLength(array);
for (int i = 0; i < length; i++)
list->push(properties[i]);
env->ReleaseIntArrayElements(array, properties, 0);
env->DeleteLocalRef(array);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return list;
}
MtpDevicePropertyList* MyMtpDatabase::getSupportedDeviceProperties() {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jintArray array = (jintArray)env->CallObjectMethod(mDatabase,
method_getSupportedDeviceProperties);
if (!array)
return NULL;
MtpDevicePropertyList* list = new MtpDevicePropertyList();
jint* properties = env->GetIntArrayElements(array, 0);
jsize length = env->GetArrayLength(array);
for (int i = 0; i < length; i++)
list->push(properties[i]);
env->ReleaseIntArrayElements(array, properties, 0);
env->DeleteLocalRef(array);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return list;
}
MtpResponseCode MyMtpDatabase::getObjectPropertyValue(MtpObjectHandle handle,
MtpObjectProperty property,
MtpDataPacket& packet) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jobject list = env->CallObjectMethod(mDatabase, method_getObjectPropertyList,
(jlong)handle, 0, (jlong)property, 0, 0);
MtpResponseCode result = env->GetIntField(list, field_mResult);
int count = env->GetIntField(list, field_mCount);
if (result == MTP_RESPONSE_OK && count != 1)
result = MTP_RESPONSE_GENERAL_ERROR;
if (result == MTP_RESPONSE_OK) {
jintArray objectHandlesArray = (jintArray)env->GetObjectField(list, field_mObjectHandles);
jintArray propertyCodesArray = (jintArray)env->GetObjectField(list, field_mPropertyCodes);
jintArray dataTypesArray = (jintArray)env->GetObjectField(list, field_mDataTypes);
jlongArray longValuesArray = (jlongArray)env->GetObjectField(list, field_mLongValues);
jobjectArray stringValuesArray = (jobjectArray)env->GetObjectField(list, field_mStringValues);
jint* objectHandles = env->GetIntArrayElements(objectHandlesArray, 0);
jint* propertyCodes = env->GetIntArrayElements(propertyCodesArray, 0);
jint* dataTypes = env->GetIntArrayElements(dataTypesArray, 0);
jlong* longValues = (longValuesArray ? env->GetLongArrayElements(longValuesArray, 0) : NULL);
int type = dataTypes[0];
jlong longValue = (longValues ? longValues[0] : 0);
// special case date properties, which are strings to MTP
// but stored internally as a uint64
if (property == MTP_PROPERTY_DATE_MODIFIED || property == MTP_PROPERTY_DATE_ADDED) {
char date[20];
formatDateTime(longValue, date, sizeof(date));
packet.putString(date);
goto out;
}
// release date is stored internally as just the year
if (property == MTP_PROPERTY_ORIGINAL_RELEASE_DATE) {
char date[20];
snprintf(date, sizeof(date), "%04" PRId64 "0101T000000", longValue);
packet.putString(date);
goto out;
}
switch (type) {
case MTP_TYPE_INT8:
packet.putInt8(longValue);
break;
case MTP_TYPE_UINT8:
packet.putUInt8(longValue);
break;
case MTP_TYPE_INT16:
packet.putInt16(longValue);
break;
case MTP_TYPE_UINT16:
packet.putUInt16(longValue);
break;
case MTP_TYPE_INT32:
packet.putInt32(longValue);
break;
case MTP_TYPE_UINT32:
packet.putUInt32(longValue);
break;
case MTP_TYPE_INT64:
packet.putInt64(longValue);
break;
case MTP_TYPE_UINT64:
packet.putUInt64(longValue);
break;
case MTP_TYPE_INT128:
packet.putInt128(longValue);
break;
case MTP_TYPE_UINT128:
packet.putInt128(longValue);
break;
case MTP_TYPE_STR:
{
jstring stringValue = (jstring)env->GetObjectArrayElement(stringValuesArray, 0);
const char* str = (stringValue ? env->GetStringUTFChars(stringValue, NULL) : NULL);
if (stringValue) {
packet.putString(str);
env->ReleaseStringUTFChars(stringValue, str);
} else {
packet.putEmptyString();
}
env->DeleteLocalRef(stringValue);
break;
}
default:
ALOGE("unsupported type in getObjectPropertyValue\n");
result = MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT;
}
out:
env->ReleaseIntArrayElements(objectHandlesArray, objectHandles, 0);
env->ReleaseIntArrayElements(propertyCodesArray, propertyCodes, 0);
env->ReleaseIntArrayElements(dataTypesArray, dataTypes, 0);
if (longValues)
env->ReleaseLongArrayElements(longValuesArray, longValues, 0);
env->DeleteLocalRef(objectHandlesArray);
env->DeleteLocalRef(propertyCodesArray);
env->DeleteLocalRef(dataTypesArray);
if (longValuesArray)
env->DeleteLocalRef(longValuesArray);
if (stringValuesArray)
env->DeleteLocalRef(stringValuesArray);
}
env->DeleteLocalRef(list);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
static bool readLongValue(int type, MtpDataPacket& packet, jlong& longValue) {
switch (type) {
case MTP_TYPE_INT8: {
int8_t temp;
if (!packet.getInt8(temp)) return false;
longValue = temp;
break;
}
case MTP_TYPE_UINT8: {
uint8_t temp;
if (!packet.getUInt8(temp)) return false;
longValue = temp;
break;
}
case MTP_TYPE_INT16: {
int16_t temp;
if (!packet.getInt16(temp)) return false;
longValue = temp;
break;
}
case MTP_TYPE_UINT16: {
uint16_t temp;
if (!packet.getUInt16(temp)) return false;
longValue = temp;
break;
}
case MTP_TYPE_INT32: {
int32_t temp;
if (!packet.getInt32(temp)) return false;
longValue = temp;
break;
}
case MTP_TYPE_UINT32: {
uint32_t temp;
if (!packet.getUInt32(temp)) return false;
longValue = temp;
break;
}
case MTP_TYPE_INT64: {
int64_t temp;
if (!packet.getInt64(temp)) return false;
longValue = temp;
break;
}
case MTP_TYPE_UINT64: {
uint64_t temp;
if (!packet.getUInt64(temp)) return false;
longValue = temp;
break;
}
default:
ALOGE("unsupported type in readLongValue");
return false;
}
return true;
}
MtpResponseCode MyMtpDatabase::setObjectPropertyValue(MtpObjectHandle handle,
MtpObjectProperty property,
MtpDataPacket& packet) {
int type;
if (!getObjectPropertyInfo(property, type))
return MTP_RESPONSE_OBJECT_PROP_NOT_SUPPORTED;
JNIEnv* env = AndroidRuntime::getJNIEnv();
jlong longValue = 0;
jstring stringValue = NULL;
MtpResponseCode result = MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT;
if (type == MTP_TYPE_STR) {
MtpStringBuffer buffer;
if (!packet.getString(buffer)) goto fail;
stringValue = env->NewStringUTF((const char *)buffer);
} else {
if (!readLongValue(type, packet, longValue)) goto fail;
}
result = env->CallIntMethod(mDatabase, method_setObjectProperty,
(jint)handle, (jint)property, longValue, stringValue);
if (stringValue)
env->DeleteLocalRef(stringValue);
fail:
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
MtpResponseCode MyMtpDatabase::getDevicePropertyValue(MtpDeviceProperty property,
MtpDataPacket& packet) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
if (property == MTP_DEVICE_PROPERTY_BATTERY_LEVEL) {
// special case - implemented here instead of Java
packet.putUInt8((uint8_t)env->GetIntField(mDatabase, field_batteryLevel));
return MTP_RESPONSE_OK;
} else {
int type;
if (!getDevicePropertyInfo(property, type))
return MTP_RESPONSE_DEVICE_PROP_NOT_SUPPORTED;
jint result = env->CallIntMethod(mDatabase, method_getDeviceProperty,
(jint)property, mLongBuffer, mStringBuffer);
if (result != MTP_RESPONSE_OK) {
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0);
jlong longValue = longValues[0];
env->ReleaseLongArrayElements(mLongBuffer, longValues, 0);
switch (type) {
case MTP_TYPE_INT8:
packet.putInt8(longValue);
break;
case MTP_TYPE_UINT8:
packet.putUInt8(longValue);
break;
case MTP_TYPE_INT16:
packet.putInt16(longValue);
break;
case MTP_TYPE_UINT16:
packet.putUInt16(longValue);
break;
case MTP_TYPE_INT32:
packet.putInt32(longValue);
break;
case MTP_TYPE_UINT32:
packet.putUInt32(longValue);
break;
case MTP_TYPE_INT64:
packet.putInt64(longValue);
break;
case MTP_TYPE_UINT64:
packet.putUInt64(longValue);
break;
case MTP_TYPE_INT128:
packet.putInt128(longValue);
break;
case MTP_TYPE_UINT128:
packet.putInt128(longValue);
break;
case MTP_TYPE_STR:
{
jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
packet.putString(str);
env->ReleaseCharArrayElements(mStringBuffer, str, 0);
break;
}
default:
ALOGE("unsupported type in getDevicePropertyValue\n");
return MTP_RESPONSE_INVALID_DEVICE_PROP_FORMAT;
}
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return MTP_RESPONSE_OK;
}
}
MtpResponseCode MyMtpDatabase::setDevicePropertyValue(MtpDeviceProperty property,
MtpDataPacket& packet) {
int type;
if (!getDevicePropertyInfo(property, type))
return MTP_RESPONSE_DEVICE_PROP_NOT_SUPPORTED;
JNIEnv* env = AndroidRuntime::getJNIEnv();
jlong longValue = 0;
jstring stringValue = NULL;
MtpResponseCode result = MTP_RESPONSE_INVALID_DEVICE_PROP_FORMAT;
if (type == MTP_TYPE_STR) {
MtpStringBuffer buffer;
if (!packet.getString(buffer)) goto fail;
stringValue = env->NewStringUTF((const char *)buffer);
} else {
if (!readLongValue(type, packet, longValue)) goto fail;
}
result = env->CallIntMethod(mDatabase, method_setDeviceProperty,
(jint)property, longValue, stringValue);
if (stringValue)
env->DeleteLocalRef(stringValue);
fail:
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
MtpResponseCode MyMtpDatabase::resetDeviceProperty(MtpDeviceProperty /*property*/) {
return -1;
}
MtpResponseCode MyMtpDatabase::getObjectPropertyList(MtpObjectHandle handle,
uint32_t format, uint32_t property,
int groupCode, int depth,
MtpDataPacket& packet) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jobject list = env->CallObjectMethod(mDatabase, method_getObjectPropertyList,
(jlong)handle, (jint)format, (jlong)property, (jint)groupCode, (jint)depth);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
if (!list)
return MTP_RESPONSE_GENERAL_ERROR;
int count = env->GetIntField(list, field_mCount);
MtpResponseCode result = env->GetIntField(list, field_mResult);
packet.putUInt32(count);
if (count > 0) {
jintArray objectHandlesArray = (jintArray)env->GetObjectField(list, field_mObjectHandles);
jintArray propertyCodesArray = (jintArray)env->GetObjectField(list, field_mPropertyCodes);
jintArray dataTypesArray = (jintArray)env->GetObjectField(list, field_mDataTypes);
jlongArray longValuesArray = (jlongArray)env->GetObjectField(list, field_mLongValues);
jobjectArray stringValuesArray = (jobjectArray)env->GetObjectField(list, field_mStringValues);
jint* objectHandles = env->GetIntArrayElements(objectHandlesArray, 0);
jint* propertyCodes = env->GetIntArrayElements(propertyCodesArray, 0);
jint* dataTypes = env->GetIntArrayElements(dataTypesArray, 0);
jlong* longValues = (longValuesArray ? env->GetLongArrayElements(longValuesArray, 0) : NULL);
for (int i = 0; i < count; i++) {
packet.putUInt32(objectHandles[i]);
packet.putUInt16(propertyCodes[i]);
int type = dataTypes[i];
packet.putUInt16(type);
switch (type) {
case MTP_TYPE_INT8:
packet.putInt8(longValues[i]);
break;
case MTP_TYPE_UINT8:
packet.putUInt8(longValues[i]);
break;
case MTP_TYPE_INT16:
packet.putInt16(longValues[i]);
break;
case MTP_TYPE_UINT16:
packet.putUInt16(longValues[i]);
break;
case MTP_TYPE_INT32:
packet.putInt32(longValues[i]);
break;
case MTP_TYPE_UINT32:
packet.putUInt32(longValues[i]);
break;
case MTP_TYPE_INT64:
packet.putInt64(longValues[i]);
break;
case MTP_TYPE_UINT64:
packet.putUInt64(longValues[i]);
break;
case MTP_TYPE_INT128:
packet.putInt128(longValues[i]);
break;
case MTP_TYPE_UINT128:
packet.putUInt128(longValues[i]);
break;
case MTP_TYPE_STR: {
jstring value = (jstring)env->GetObjectArrayElement(stringValuesArray, i);
const char *valueStr = (value ? env->GetStringUTFChars(value, NULL) : NULL);
if (valueStr) {
packet.putString(valueStr);
env->ReleaseStringUTFChars(value, valueStr);
} else {
packet.putEmptyString();
}
env->DeleteLocalRef(value);
break;
}
default:
ALOGE("bad or unsupported data type in MyMtpDatabase::getObjectPropertyList");
break;
}
}
env->ReleaseIntArrayElements(objectHandlesArray, objectHandles, 0);
env->ReleaseIntArrayElements(propertyCodesArray, propertyCodes, 0);
env->ReleaseIntArrayElements(dataTypesArray, dataTypes, 0);
if (longValues)
env->ReleaseLongArrayElements(longValuesArray, longValues, 0);
env->DeleteLocalRef(objectHandlesArray);
env->DeleteLocalRef(propertyCodesArray);
env->DeleteLocalRef(dataTypesArray);
if (longValuesArray)
env->DeleteLocalRef(longValuesArray);
if (stringValuesArray)
env->DeleteLocalRef(stringValuesArray);
}
env->DeleteLocalRef(list);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
static void foreachentry(ExifEntry *entry, void* /* user */) {
char buf[1024];
ALOGI("entry %x, format %d, size %d: %s",
entry->tag, entry->format, entry->size, exif_entry_get_value(entry, buf, sizeof(buf)));
}
static void foreachcontent(ExifContent *content, void *user) {
ALOGI("content %d", exif_content_get_ifd(content));
exif_content_foreach_entry(content, foreachentry, user);
}
static long getLongFromExifEntry(ExifEntry *e) {
ExifByteOrder o = exif_data_get_byte_order(e->parent->parent);
return exif_get_long(e->data, o);
}
MtpResponseCode MyMtpDatabase::getObjectInfo(MtpObjectHandle handle,
MtpObjectInfo& info) {
MtpString path;
int64_t length;
MtpObjectFormat format;
MtpResponseCode result = getObjectFilePath(handle, path, length, format);
if (result != MTP_RESPONSE_OK) {
return result;
}
info.mCompressedSize = (length > 0xFFFFFFFFLL ? 0xFFFFFFFF : (uint32_t)length);
JNIEnv* env = AndroidRuntime::getJNIEnv();
if (!env->CallBooleanMethod(mDatabase, method_getObjectInfo,
(jint)handle, mIntBuffer, mStringBuffer, mLongBuffer)) {
return MTP_RESPONSE_INVALID_OBJECT_HANDLE;
}
jint* intValues = env->GetIntArrayElements(mIntBuffer, 0);
info.mStorageID = intValues[0];
info.mFormat = intValues[1];
info.mParent = intValues[2];
env->ReleaseIntArrayElements(mIntBuffer, intValues, 0);
jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0);
info.mDateCreated = longValues[0];
info.mDateModified = longValues[1];
env->ReleaseLongArrayElements(mLongBuffer, longValues, 0);
if ((false)) {
info.mAssociationType = (format == MTP_FORMAT_ASSOCIATION ?
MTP_ASSOCIATION_TYPE_GENERIC_FOLDER :
MTP_ASSOCIATION_TYPE_UNDEFINED);
}
info.mAssociationType = MTP_ASSOCIATION_TYPE_UNDEFINED;
jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
MtpString temp(reinterpret_cast<char16_t*>(str));
info.mName = strdup((const char *)temp);
env->ReleaseCharArrayElements(mStringBuffer, str, 0);
// read EXIF data for thumbnail information
if (info.mFormat == MTP_FORMAT_EXIF_JPEG || info.mFormat == MTP_FORMAT_JFIF) {
ExifData *exifdata = exif_data_new_from_file(path);
if (exifdata) {
if ((false)) {
exif_data_foreach_content(exifdata, foreachcontent, NULL);
}
// XXX get this from exif, or parse jpeg header instead?
ExifEntry *w = exif_content_get_entry(
exifdata->ifd[EXIF_IFD_EXIF], EXIF_TAG_PIXEL_X_DIMENSION);
ExifEntry *h = exif_content_get_entry(
exifdata->ifd[EXIF_IFD_EXIF], EXIF_TAG_PIXEL_Y_DIMENSION);
info.mThumbCompressedSize = exifdata->data ? exifdata->size : 0;
info.mThumbFormat = MTP_FORMAT_EXIF_JPEG;
info.mImagePixWidth = w ? getLongFromExifEntry(w) : 0;
info.mImagePixHeight = h ? getLongFromExifEntry(h) : 0;
exif_data_unref(exifdata);
}
}
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return MTP_RESPONSE_OK;
}
void* MyMtpDatabase::getThumbnail(MtpObjectHandle handle, size_t& outThumbSize) {
MtpString path;
int64_t length;
MtpObjectFormat format;
void* result = NULL;
outThumbSize = 0;
if (getObjectFilePath(handle, path, length, format) == MTP_RESPONSE_OK
&& (format == MTP_FORMAT_EXIF_JPEG || format == MTP_FORMAT_JFIF)) {
ExifData *exifdata = exif_data_new_from_file(path);
if (exifdata) {
if (exifdata->data) {
result = malloc(exifdata->size);
if (result) {
memcpy(result, exifdata->data, exifdata->size);
outThumbSize = exifdata->size;
}
}
exif_data_unref(exifdata);
}
}
return result;
}
MtpResponseCode MyMtpDatabase::getObjectFilePath(MtpObjectHandle handle,
MtpString& outFilePath,
int64_t& outFileLength,
MtpObjectFormat& outFormat) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jint result = env->CallIntMethod(mDatabase, method_getObjectFilePath,
(jint)handle, mStringBuffer, mLongBuffer);
if (result != MTP_RESPONSE_OK) {
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
outFilePath.setTo(reinterpret_cast<char16_t*>(str),
strlen16(reinterpret_cast<char16_t*>(str)));
env->ReleaseCharArrayElements(mStringBuffer, str, 0);
jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0);
outFileLength = longValues[0];
outFormat = longValues[1];
env->ReleaseLongArrayElements(mLongBuffer, longValues, 0);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
MtpResponseCode MyMtpDatabase::deleteFile(MtpObjectHandle handle) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
MtpResponseCode result = env->CallIntMethod(mDatabase, method_deleteFile, (jint)handle);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
struct PropertyTableEntry {
MtpObjectProperty property;
int type;
};
static const PropertyTableEntry kObjectPropertyTable[] = {
{ MTP_PROPERTY_STORAGE_ID, MTP_TYPE_UINT32 },
{ MTP_PROPERTY_OBJECT_FORMAT, MTP_TYPE_UINT16 },
{ MTP_PROPERTY_PROTECTION_STATUS, MTP_TYPE_UINT16 },
{ MTP_PROPERTY_OBJECT_SIZE, MTP_TYPE_UINT64 },
{ MTP_PROPERTY_OBJECT_FILE_NAME, MTP_TYPE_STR },
{ MTP_PROPERTY_DATE_MODIFIED, MTP_TYPE_STR },
{ MTP_PROPERTY_PARENT_OBJECT, MTP_TYPE_UINT32 },
{ MTP_PROPERTY_PERSISTENT_UID, MTP_TYPE_UINT128 },
{ MTP_PROPERTY_NAME, MTP_TYPE_STR },
{ MTP_PROPERTY_DISPLAY_NAME, MTP_TYPE_STR },
{ MTP_PROPERTY_DATE_ADDED, MTP_TYPE_STR },
{ MTP_PROPERTY_ARTIST, MTP_TYPE_STR },
{ MTP_PROPERTY_ALBUM_NAME, MTP_TYPE_STR },
{ MTP_PROPERTY_ALBUM_ARTIST, MTP_TYPE_STR },
{ MTP_PROPERTY_TRACK, MTP_TYPE_UINT16 },
{ MTP_PROPERTY_ORIGINAL_RELEASE_DATE, MTP_TYPE_STR },
{ MTP_PROPERTY_GENRE, MTP_TYPE_STR },
{ MTP_PROPERTY_COMPOSER, MTP_TYPE_STR },
{ MTP_PROPERTY_DURATION, MTP_TYPE_UINT32 },
{ MTP_PROPERTY_DESCRIPTION, MTP_TYPE_STR },
{ MTP_PROPERTY_AUDIO_WAVE_CODEC, MTP_TYPE_UINT32 },
{ MTP_PROPERTY_BITRATE_TYPE, MTP_TYPE_UINT16 },
{ MTP_PROPERTY_AUDIO_BITRATE, MTP_TYPE_UINT32 },
{ MTP_PROPERTY_NUMBER_OF_CHANNELS,MTP_TYPE_UINT16 },
{ MTP_PROPERTY_SAMPLE_RATE, MTP_TYPE_UINT32 },
};
static const PropertyTableEntry kDevicePropertyTable[] = {
{ MTP_DEVICE_PROPERTY_SYNCHRONIZATION_PARTNER, MTP_TYPE_STR },
{ MTP_DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME, MTP_TYPE_STR },
{ MTP_DEVICE_PROPERTY_IMAGE_SIZE, MTP_TYPE_STR },
{ MTP_DEVICE_PROPERTY_BATTERY_LEVEL, MTP_TYPE_UINT8 },
};
bool MyMtpDatabase::getObjectPropertyInfo(MtpObjectProperty property, int& type) {
int count = sizeof(kObjectPropertyTable) / sizeof(kObjectPropertyTable[0]);
const PropertyTableEntry* entry = kObjectPropertyTable;
for (int i = 0; i < count; i++, entry++) {
if (entry->property == property) {
type = entry->type;
return true;
}
}
return false;
}
bool MyMtpDatabase::getDevicePropertyInfo(MtpDeviceProperty property, int& type) {
int count = sizeof(kDevicePropertyTable) / sizeof(kDevicePropertyTable[0]);
const PropertyTableEntry* entry = kDevicePropertyTable;
for (int i = 0; i < count; i++, entry++) {
if (entry->property == property) {
type = entry->type;
return true;
}
}
return false;
}
MtpObjectHandleList* MyMtpDatabase::getObjectReferences(MtpObjectHandle handle) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jintArray array = (jintArray)env->CallObjectMethod(mDatabase, method_getObjectReferences,
(jint)handle);
if (!array)
return NULL;
MtpObjectHandleList* list = new MtpObjectHandleList();
jint* handles = env->GetIntArrayElements(array, 0);
jsize length = env->GetArrayLength(array);
for (int i = 0; i < length; i++)
list->push(handles[i]);
env->ReleaseIntArrayElements(array, handles, 0);
env->DeleteLocalRef(array);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return list;
}
MtpResponseCode MyMtpDatabase::setObjectReferences(MtpObjectHandle handle,
MtpObjectHandleList* references) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
int count = references->size();
jintArray array = env->NewIntArray(count);
if (!array) {
ALOGE("out of memory in setObjectReferences");
return false;
}
jint* handles = env->GetIntArrayElements(array, 0);
for (int i = 0; i < count; i++)
handles[i] = (*references)[i];
env->ReleaseIntArrayElements(array, handles, 0);
MtpResponseCode result = env->CallIntMethod(mDatabase, method_setObjectReferences,
(jint)handle, array);
env->DeleteLocalRef(array);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
MtpProperty* MyMtpDatabase::getObjectPropertyDesc(MtpObjectProperty property,
MtpObjectFormat format) {
static const int channelEnum[] = {
1, // mono
2, // stereo
3, // 2.1
4, // 3
5, // 3.1
6, // 4
7, // 4.1
8, // 5
9, // 5.1
};
static const int bitrateEnum[] = {
1, // fixed rate
2, // variable rate
};
MtpProperty* result = NULL;
switch (property) {
case MTP_PROPERTY_OBJECT_FORMAT:
// use format as default value
result = new MtpProperty(property, MTP_TYPE_UINT16, false, format);
break;
case MTP_PROPERTY_PROTECTION_STATUS:
case MTP_PROPERTY_TRACK:
result = new MtpProperty(property, MTP_TYPE_UINT16);
break;
case MTP_PROPERTY_STORAGE_ID:
case MTP_PROPERTY_PARENT_OBJECT:
case MTP_PROPERTY_DURATION:
case MTP_PROPERTY_AUDIO_WAVE_CODEC:
result = new MtpProperty(property, MTP_TYPE_UINT32);
break;
case MTP_PROPERTY_OBJECT_SIZE:
result = new MtpProperty(property, MTP_TYPE_UINT64);
break;
case MTP_PROPERTY_PERSISTENT_UID:
result = new MtpProperty(property, MTP_TYPE_UINT128);
break;
case MTP_PROPERTY_NAME:
case MTP_PROPERTY_DISPLAY_NAME:
case MTP_PROPERTY_ARTIST:
case MTP_PROPERTY_ALBUM_NAME:
case MTP_PROPERTY_ALBUM_ARTIST:
case MTP_PROPERTY_GENRE:
case MTP_PROPERTY_COMPOSER:
case MTP_PROPERTY_DESCRIPTION:
result = new MtpProperty(property, MTP_TYPE_STR);
break;
case MTP_PROPERTY_DATE_MODIFIED:
case MTP_PROPERTY_DATE_ADDED:
case MTP_PROPERTY_ORIGINAL_RELEASE_DATE:
result = new MtpProperty(property, MTP_TYPE_STR);
result->setFormDateTime();
break;
case MTP_PROPERTY_OBJECT_FILE_NAME:
// We allow renaming files and folders
result = new MtpProperty(property, MTP_TYPE_STR, true);
break;
case MTP_PROPERTY_BITRATE_TYPE:
result = new MtpProperty(property, MTP_TYPE_UINT16);
result->setFormEnum(bitrateEnum, sizeof(bitrateEnum)/sizeof(bitrateEnum[0]));
break;
case MTP_PROPERTY_AUDIO_BITRATE:
result = new MtpProperty(property, MTP_TYPE_UINT32);
result->setFormRange(1, 1536000, 1);
break;
case MTP_PROPERTY_NUMBER_OF_CHANNELS:
result = new MtpProperty(property, MTP_TYPE_UINT16);
result->setFormEnum(channelEnum, sizeof(channelEnum)/sizeof(channelEnum[0]));
break;
case MTP_PROPERTY_SAMPLE_RATE:
result = new MtpProperty(property, MTP_TYPE_UINT32);
result->setFormRange(8000, 48000, 1);
break;
}
return result;
}
MtpProperty* MyMtpDatabase::getDevicePropertyDesc(MtpDeviceProperty property) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
MtpProperty* result = NULL;
bool writable = false;
switch (property) {
case MTP_DEVICE_PROPERTY_SYNCHRONIZATION_PARTNER:
case MTP_DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME:
writable = true;
// fall through
case MTP_DEVICE_PROPERTY_IMAGE_SIZE: {
result = new MtpProperty(property, MTP_TYPE_STR, writable);
// get current value
jint ret = env->CallIntMethod(mDatabase, method_getDeviceProperty,
(jint)property, mLongBuffer, mStringBuffer);
if (ret == MTP_RESPONSE_OK) {
jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
result->setCurrentValue(str);
// for read-only properties it is safe to assume current value is default value
if (!writable)
result->setDefaultValue(str);
env->ReleaseCharArrayElements(mStringBuffer, str, 0);
} else {
ALOGE("unable to read device property, response: %04X", ret);
}
break;
}
case MTP_DEVICE_PROPERTY_BATTERY_LEVEL:
result = new MtpProperty(property, MTP_TYPE_UINT8);
result->setFormRange(0, env->GetIntField(mDatabase, field_batteryScale), 1);
result->mCurrentValue.u.u8 = (uint8_t)env->GetIntField(mDatabase, field_batteryLevel);
break;
}
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
void MyMtpDatabase::sessionStarted() {
JNIEnv* env = AndroidRuntime::getJNIEnv();
env->CallVoidMethod(mDatabase, method_sessionStarted);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
}
void MyMtpDatabase::sessionEnded() {
JNIEnv* env = AndroidRuntime::getJNIEnv();
env->CallVoidMethod(mDatabase, method_sessionEnded);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
}
// ----------------------------------------------------------------------------
static void
android_mtp_MtpDatabase_setup(JNIEnv *env, jobject thiz)
{
MyMtpDatabase* database = new MyMtpDatabase(env, thiz);
env->SetLongField(thiz, field_context, (jlong)database);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
}
static void
android_mtp_MtpDatabase_finalize(JNIEnv *env, jobject thiz)
{
MyMtpDatabase* database = (MyMtpDatabase *)env->GetLongField(thiz, field_context);
database->cleanup(env);
delete database;
env->SetLongField(thiz, field_context, 0);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
}
static jstring
android_mtp_MtpPropertyGroup_format_date_time(JNIEnv *env, jobject /*thiz*/, jlong seconds)
{
char date[20];
formatDateTime(seconds, date, sizeof(date));
return env->NewStringUTF(date);
}
// ----------------------------------------------------------------------------
static JNINativeMethod gMtpDatabaseMethods[] = {
{"native_setup", "()V", (void *)android_mtp_MtpDatabase_setup},
{"native_finalize", "()V", (void *)android_mtp_MtpDatabase_finalize},
};
static JNINativeMethod gMtpPropertyGroupMethods[] = {
{"format_date_time", "(J)Ljava/lang/String;",
(void *)android_mtp_MtpPropertyGroup_format_date_time},
};
int register_android_mtp_MtpDatabase(JNIEnv *env)
{
jclass clazz;
clazz = env->FindClass("android/mtp/MtpDatabase");
if (clazz == NULL) {
ALOGE("Can't find android/mtp/MtpDatabase");
return -1;
}
method_beginSendObject = env->GetMethodID(clazz, "beginSendObject", "(Ljava/lang/String;IIIJJ)I");
if (method_beginSendObject == NULL) {
ALOGE("Can't find beginSendObject");
return -1;
}
method_endSendObject = env->GetMethodID(clazz, "endSendObject", "(Ljava/lang/String;IIZ)V");
if (method_endSendObject == NULL) {
ALOGE("Can't find endSendObject");
return -1;
}
method_getObjectList = env->GetMethodID(clazz, "getObjectList", "(III)[I");
if (method_getObjectList == NULL) {
ALOGE("Can't find getObjectList");
return -1;
}
method_getNumObjects = env->GetMethodID(clazz, "getNumObjects", "(III)I");
if (method_getNumObjects == NULL) {
ALOGE("Can't find getNumObjects");
return -1;
}
method_getSupportedPlaybackFormats = env->GetMethodID(clazz, "getSupportedPlaybackFormats", "()[I");
if (method_getSupportedPlaybackFormats == NULL) {
ALOGE("Can't find getSupportedPlaybackFormats");
return -1;
}
method_getSupportedCaptureFormats = env->GetMethodID(clazz, "getSupportedCaptureFormats", "()[I");
if (method_getSupportedCaptureFormats == NULL) {
ALOGE("Can't find getSupportedCaptureFormats");
return -1;
}
method_getSupportedObjectProperties = env->GetMethodID(clazz, "getSupportedObjectProperties", "(I)[I");
if (method_getSupportedObjectProperties == NULL) {
ALOGE("Can't find getSupportedObjectProperties");
return -1;
}
method_getSupportedDeviceProperties = env->GetMethodID(clazz, "getSupportedDeviceProperties", "()[I");
if (method_getSupportedDeviceProperties == NULL) {
ALOGE("Can't find getSupportedDeviceProperties");
return -1;
}
method_setObjectProperty = env->GetMethodID(clazz, "setObjectProperty", "(IIJLjava/lang/String;)I");
if (method_setObjectProperty == NULL) {
ALOGE("Can't find setObjectProperty");
return -1;
}
method_getDeviceProperty = env->GetMethodID(clazz, "getDeviceProperty", "(I[J[C)I");
if (method_getDeviceProperty == NULL) {
ALOGE("Can't find getDeviceProperty");
return -1;
}
method_setDeviceProperty = env->GetMethodID(clazz, "setDeviceProperty", "(IJLjava/lang/String;)I");
if (method_setDeviceProperty == NULL) {
ALOGE("Can't find setDeviceProperty");
return -1;
}
method_getObjectPropertyList = env->GetMethodID(clazz, "getObjectPropertyList",
"(JIJII)Landroid/mtp/MtpPropertyList;");
if (method_getObjectPropertyList == NULL) {
ALOGE("Can't find getObjectPropertyList");
return -1;
}
method_getObjectInfo = env->GetMethodID(clazz, "getObjectInfo", "(I[I[C[J)Z");
if (method_getObjectInfo == NULL) {
ALOGE("Can't find getObjectInfo");
return -1;
}
method_getObjectFilePath = env->GetMethodID(clazz, "getObjectFilePath", "(I[C[J)I");
if (method_getObjectFilePath == NULL) {
ALOGE("Can't find getObjectFilePath");
return -1;
}
method_deleteFile = env->GetMethodID(clazz, "deleteFile", "(I)I");
if (method_deleteFile == NULL) {
ALOGE("Can't find deleteFile");
return -1;
}
method_getObjectReferences = env->GetMethodID(clazz, "getObjectReferences", "(I)[I");
if (method_getObjectReferences == NULL) {
ALOGE("Can't find getObjectReferences");
return -1;
}
method_setObjectReferences = env->GetMethodID(clazz, "setObjectReferences", "(I[I)I");
if (method_setObjectReferences == NULL) {
ALOGE("Can't find setObjectReferences");
return -1;
}
method_sessionStarted = env->GetMethodID(clazz, "sessionStarted", "()V");
if (method_sessionStarted == NULL) {
ALOGE("Can't find sessionStarted");
return -1;
}
method_sessionEnded = env->GetMethodID(clazz, "sessionEnded", "()V");
if (method_sessionEnded == NULL) {
ALOGE("Can't find sessionEnded");
return -1;
}
field_context = env->GetFieldID(clazz, "mNativeContext", "J");
if (field_context == NULL) {
ALOGE("Can't find MtpDatabase.mNativeContext");
return -1;
}
field_batteryLevel = env->GetFieldID(clazz, "mBatteryLevel", "I");
if (field_batteryLevel == NULL) {
ALOGE("Can't find MtpDatabase.mBatteryLevel");
return -1;
}
field_batteryScale = env->GetFieldID(clazz, "mBatteryScale", "I");
if (field_batteryScale == NULL) {
ALOGE("Can't find MtpDatabase.mBatteryScale");
return -1;
}
// now set up fields for MtpPropertyList class
clazz = env->FindClass("android/mtp/MtpPropertyList");
if (clazz == NULL) {
ALOGE("Can't find android/mtp/MtpPropertyList");
return -1;
}
field_mCount = env->GetFieldID(clazz, "mCount", "I");
if (field_mCount == NULL) {
ALOGE("Can't find MtpPropertyList.mCount");
return -1;
}
field_mResult = env->GetFieldID(clazz, "mResult", "I");
if (field_mResult == NULL) {
ALOGE("Can't find MtpPropertyList.mResult");
return -1;
}
field_mObjectHandles = env->GetFieldID(clazz, "mObjectHandles", "[I");
if (field_mObjectHandles == NULL) {
ALOGE("Can't find MtpPropertyList.mObjectHandles");
return -1;
}
field_mPropertyCodes = env->GetFieldID(clazz, "mPropertyCodes", "[I");
if (field_mPropertyCodes == NULL) {
ALOGE("Can't find MtpPropertyList.mPropertyCodes");
return -1;
}
field_mDataTypes = env->GetFieldID(clazz, "mDataTypes", "[I");
if (field_mDataTypes == NULL) {
ALOGE("Can't find MtpPropertyList.mDataTypes");
return -1;
}
field_mLongValues = env->GetFieldID(clazz, "mLongValues", "[J");
if (field_mLongValues == NULL) {
ALOGE("Can't find MtpPropertyList.mLongValues");
return -1;
}
field_mStringValues = env->GetFieldID(clazz, "mStringValues", "[Ljava/lang/String;");
if (field_mStringValues == NULL) {
ALOGE("Can't find MtpPropertyList.mStringValues");
return -1;
}
if (AndroidRuntime::registerNativeMethods(env,
"android/mtp/MtpDatabase", gMtpDatabaseMethods, NELEM(gMtpDatabaseMethods)))
return -1;
return AndroidRuntime::registerNativeMethods(env,
"android/mtp/MtpPropertyGroup", gMtpPropertyGroupMethods, NELEM(gMtpPropertyGroupMethods));
}