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android_mtp_MtpDatabase.cpp
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android_mtp_MtpDatabase.cpp
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/*
* 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 <stdio.h>
#include <assert.h>
#include <limits.h>
#include <unistd.h>
#include <fcntl.h>
#include "jni.h"
#include "JNIHelp.h"
#include "android_runtime/AndroidRuntime.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 "jhead.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;
// 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->GetIntField(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()) {
LOGE("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);
jcharArray charArray = env->NewCharArray(256);
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), "%04lld0101T000000", 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);
if (stringValue) {
const char* str = env->GetStringUTFChars(stringValue, NULL);
if (str == NULL) {
return MTP_RESPONSE_GENERAL_ERROR;
}
packet.putString(str);
env->ReleaseStringUTFChars(stringValue, str);
} else {
packet.putEmptyString();
}
break;
}
default:
LOGE("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;
}
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;
switch (type) {
case MTP_TYPE_INT8:
longValue = packet.getInt8();
break;
case MTP_TYPE_UINT8:
longValue = packet.getUInt8();
break;
case MTP_TYPE_INT16:
longValue = packet.getInt16();
break;
case MTP_TYPE_UINT16:
longValue = packet.getUInt16();
break;
case MTP_TYPE_INT32:
longValue = packet.getInt32();
break;
case MTP_TYPE_UINT32:
longValue = packet.getUInt32();
break;
case MTP_TYPE_INT64:
longValue = packet.getInt64();
break;
case MTP_TYPE_UINT64:
longValue = packet.getUInt64();
break;
case MTP_TYPE_STR:
{
MtpStringBuffer buffer;
packet.getString(buffer);
stringValue = env->NewStringUTF((const char *)buffer);
break;
}
default:
LOGE("unsupported type in getObjectPropertyValue\n");
return MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT;
}
jint result = env->CallIntMethod(mDatabase, method_setObjectProperty,
(jint)handle, (jint)property, longValue, stringValue);
if (stringValue)
env->DeleteLocalRef(stringValue);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
return result;
}
MtpResponseCode MyMtpDatabase::getDevicePropertyValue(MtpDeviceProperty property,
MtpDataPacket& packet) {
int type;
if (!getDevicePropertyInfo(property, type))
return MTP_RESPONSE_DEVICE_PROP_NOT_SUPPORTED;
JNIEnv* env = AndroidRuntime::getJNIEnv();
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:
LOGE("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;
switch (type) {
case MTP_TYPE_INT8:
longValue = packet.getInt8();
break;
case MTP_TYPE_UINT8:
longValue = packet.getUInt8();
break;
case MTP_TYPE_INT16:
longValue = packet.getInt16();
break;
case MTP_TYPE_UINT16:
longValue = packet.getUInt16();
break;
case MTP_TYPE_INT32:
longValue = packet.getInt32();
break;
case MTP_TYPE_UINT32:
longValue = packet.getUInt32();
break;
case MTP_TYPE_INT64:
longValue = packet.getInt64();
break;
case MTP_TYPE_UINT64:
longValue = packet.getUInt64();
break;
case MTP_TYPE_STR:
{
MtpStringBuffer buffer;
packet.getString(buffer);
stringValue = env->NewStringUTF((const char *)buffer);
break;
}
default:
LOGE("unsupported type in setDevicePropertyValue\n");
return MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT;
}
jint result = env->CallIntMethod(mDatabase, method_setDeviceProperty,
(jint)property, longValue, stringValue);
if (stringValue)
env->DeleteLocalRef(stringValue);
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:
LOGE("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;
}
MtpResponseCode MyMtpDatabase::getObjectInfo(MtpObjectHandle handle,
MtpObjectInfo& info) {
char date[20];
JNIEnv* env = AndroidRuntime::getJNIEnv();
jboolean result = env->CallBooleanMethod(mDatabase, method_getObjectInfo,
(jint)handle, mIntBuffer, mStringBuffer, mLongBuffer);
if (!result)
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);
uint64_t size = longValues[0];
info.mCompressedSize = (size > 0xFFFFFFFFLL ? 0xFFFFFFFF : size);
info.mDateModified = longValues[1];
env->ReleaseLongArrayElements(mLongBuffer, longValues, 0);
// 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(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) {
MtpString path;
int64_t length;
MtpObjectFormat format;
if (getObjectFilePath(handle, path, length, format) == MTP_RESPONSE_OK) {
ResetJpgfile();
// Start with an empty image information structure.
memset(&ImageInfo, 0, sizeof(ImageInfo));
ImageInfo.FlashUsed = -1;
ImageInfo.MeteringMode = -1;
ImageInfo.Whitebalance = -1;
strncpy(ImageInfo.FileName, (const char *)path, PATH_MAX);
if (ReadJpegFile((const char*)path, READ_METADATA)) {
Section_t* section = FindSection(M_EXIF);
if (section) {
info.mThumbCompressedSize = ImageInfo.ThumbnailSize;
info.mThumbFormat = MTP_FORMAT_EXIF_JPEG;
info.mImagePixWidth = ImageInfo.Width;
info.mImagePixHeight = ImageInfo.Height;
}
}
DiscardData();
}
}
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)) {
ResetJpgfile();
// Start with an empty image information structure.
memset(&ImageInfo, 0, sizeof(ImageInfo));
ImageInfo.FlashUsed = -1;
ImageInfo.MeteringMode = -1;
ImageInfo.Whitebalance = -1;
strncpy(ImageInfo.FileName, (const char *)path, PATH_MAX);
if (ReadJpegFile((const char*)path, READ_METADATA)) {
Section_t* section = FindSection(M_EXIF);
if (section) {
outThumbSize = ImageInfo.ThumbnailSize;
result = malloc(outThumbSize);
if (result)
memcpy(result, section->Data + ImageInfo.ThumbnailOffset + 8, outThumbSize);
}
DiscardData();
}
}
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(str, strlen16(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 },
};
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 },
};
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) {
LOGE("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) {
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:
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: