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 jlong
android_mtp_MtpDevice_get_storage_id(JNIEnv *env, jobject thiz, jint object_id)
{
MtpDevice* device = get_device_from_object(env, thiz);
if (device)
return (jlong)device->getStorageID(object_id);
else
return -1;
}
static jlong
android_mtp_MtpDevice_get_parent(JNIEnv *env, jobject thiz, jint object_id)
{
MtpDevice* device = get_device_from_object(env, thiz);
if (device)
return device->getParent(object_id);
else
return -1;
}
static jboolean
android_mtp_MtpDevice_delete_object(JNIEnv *env, jobject thiz, jint object_id)
{
MtpDevice* device = get_device_from_object(env, thiz);
if (device)
return device->deleteObject(object_id);
else
return NULL;
}
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 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 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 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 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->array());
delete storageIDs;
return array;
}
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->array());
delete handles;
return array;
}
static jbyteArray
android_mtp_MtpDevice_get_object(JNIEnv *env, jobject thiz, jint objectID, jint objectSize)
{
MtpDevice* device = get_device_from_object(env, thiz);
if (!device)
return NULL;
jbyteArray array = env->NewByteArray(objectSize);
if (!array) {
jniThrowException(env, "java/lang/OutOfMemoryError", NULL);
return NULL;
}
get_object_callback_data data;
data.env = env;
data.array = array;
if (device->readObject(objectID, get_object_callback, objectSize, &data))
return array;
return NULL;
}
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;
}
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");
delete deviceInfo;
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));
delete deviceInfo;
return info;
}
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;
}
if (objectInfo->mHandle)
env->SetIntField(info, field_objectInfo_handle, objectInfo->mHandle);
if (objectInfo->mStorageID)
env->SetIntField(info, field_objectInfo_storageId, objectInfo->mStorageID);
if (objectInfo->mFormat)
env->SetIntField(info, field_objectInfo_format, objectInfo->mFormat);
if (objectInfo->mProtectionStatus)
env->SetIntField(info, field_objectInfo_protectionStatus, objectInfo->mProtectionStatus);
if (objectInfo->mCompressedSize)
env->SetIntField(info, field_objectInfo_compressedSize, objectInfo->mCompressedSize);
if (objectInfo->mThumbFormat)
env->SetIntField(info, field_objectInfo_thumbFormat, objectInfo->mThumbFormat);
if (objectInfo->mThumbCompressedSize)
env->SetIntField(info, field_objectInfo_thumbCompressedSize, objectInfo->mThumbCompressedSize);
if (objectInfo->mThumbPixWidth)
env->SetIntField(info, field_objectInfo_thumbPixWidth, objectInfo->mThumbPixWidth);
if (objectInfo->mThumbPixHeight)
env->SetIntField(info, field_objectInfo_thumbPixHeight, objectInfo->mThumbPixHeight);
if (objectInfo->mImagePixWidth)
env->SetIntField(info, field_objectInfo_imagePixWidth, objectInfo->mImagePixWidth);
if (objectInfo->mImagePixHeight)
env->SetIntField(info, field_objectInfo_imagePixHeight, objectInfo->mImagePixHeight);
if (objectInfo->mImagePixDepth)
env->SetIntField(info, field_objectInfo_imagePixDepth, objectInfo->mImagePixDepth);
if (objectInfo->mParent)
env->SetIntField(info, field_objectInfo_parent, objectInfo->mParent);
if (objectInfo->mAssociationType)
env->SetIntField(info, field_objectInfo_associationType, objectInfo->mAssociationType);
if (objectInfo->mAssociationDesc)
env->SetIntField(info, field_objectInfo_associationDesc, objectInfo->mAssociationDesc);
if (objectInfo->mSequenceNumber)
env->SetIntField(info, field_objectInfo_sequenceNumber, objectInfo->mSequenceNumber);
if (objectInfo->mName)
env->SetObjectField(info, field_objectInfo_name, env->NewStringUTF(objectInfo->mName));
if (objectInfo->mDateCreated)
env->SetLongField(info, field_objectInfo_dateCreated, objectInfo->mDateCreated * 1000LL);
if (objectInfo->mDateModified)
env->SetLongField(info, field_objectInfo_dateModified, objectInfo->mDateModified * 1000LL);
if (objectInfo->mKeywords)
env->SetObjectField(info, field_objectInfo_keywords,
env->NewStringUTF(objectInfo->mKeywords));
delete objectInfo;
return info;
}
MtpDevice* MtpDevice::open(const char* deviceName, int fd) {
struct usb_device *device = usb_device_new(deviceName, fd);
if (!device) {
ALOGE("usb_device_new failed for %s", deviceName);
return NULL;
}
struct usb_descriptor_header* desc;
struct usb_descriptor_iter iter;
usb_descriptor_iter_init(device, &iter);
while ((desc = usb_descriptor_iter_next(&iter)) != NULL) {
if (desc->bDescriptorType == USB_DT_INTERFACE) {
struct usb_interface_descriptor *interface = (struct usb_interface_descriptor *)desc;
if (interface->bInterfaceClass == USB_CLASS_STILL_IMAGE &&
interface->bInterfaceSubClass == 1 && // Still Image Capture
interface->bInterfaceProtocol == 1) // Picture Transfer Protocol (PIMA 15470)
{
char* manufacturerName = usb_device_get_manufacturer_name(device);
char* productName = usb_device_get_product_name(device);
ALOGD("Found camera: \"%s\" \"%s\"\n", manufacturerName, productName);
free(manufacturerName);
free(productName);
} else if (interface->bInterfaceClass == 0xFF &&
interface->bInterfaceSubClass == 0xFF &&
interface->bInterfaceProtocol == 0) {
char* interfaceName = usb_device_get_string(device, interface->iInterface);
if (!interfaceName) {
continue;
} else if (strcmp(interfaceName, "MTP")) {
free(interfaceName);
continue;
}
free(interfaceName);
// Looks like an android style MTP device
char* manufacturerName = usb_device_get_manufacturer_name(device);
char* productName = usb_device_get_product_name(device);
ALOGD("Found MTP device: \"%s\" \"%s\"\n", manufacturerName, productName);
free(manufacturerName);
free(productName);
}
#if 0
else {
// look for special cased devices based on vendor/product ID
// we are doing this mainly for testing purposes
uint16_t vendor = usb_device_get_vendor_id(device);
uint16_t product = usb_device_get_product_id(device);
if (!isMtpDevice(vendor, product)) {
// not an MTP or PTP device
continue;
}
// request MTP OS string and descriptor
// some music players need to see this before entering MTP mode.
char buffer[256];
memset(buffer, 0, sizeof(buffer));
int ret = usb_device_control_transfer(device,
USB_DIR_IN|USB_RECIP_DEVICE|USB_TYPE_STANDARD,
USB_REQ_GET_DESCRIPTOR, (USB_DT_STRING << 8) | 0xEE,
0, buffer, sizeof(buffer), 0);
printf("usb_device_control_transfer returned %d errno: %d\n", ret, errno);
if (ret > 0) {
printf("got MTP string %s\n", buffer);
ret = usb_device_control_transfer(device,
USB_DIR_IN|USB_RECIP_DEVICE|USB_TYPE_VENDOR, 1,
0, 4, buffer, sizeof(buffer), 0);
printf("OS descriptor got %d\n", ret);
} else {
printf("no MTP string\n");
}
}
#endif
// if we got here, then we have a likely MTP or PTP device
// interface should be followed by three endpoints
struct usb_endpoint_descriptor *ep;
struct usb_endpoint_descriptor *ep_in_desc = NULL;
struct usb_endpoint_descriptor *ep_out_desc = NULL;
struct usb_endpoint_descriptor *ep_intr_desc = NULL;
for (int i = 0; i < 3; i++) {
ep = (struct usb_endpoint_descriptor *)usb_descriptor_iter_next(&iter);
if (!ep || ep->bDescriptorType != USB_DT_ENDPOINT) {
ALOGE("endpoints not found\n");
usb_device_close(device);
return NULL;
}
if (ep->bmAttributes == USB_ENDPOINT_XFER_BULK) {
if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
ep_in_desc = ep;
else
ep_out_desc = ep;
} else if (ep->bmAttributes == USB_ENDPOINT_XFER_INT &&
ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
ep_intr_desc = ep;
}
}
if (!ep_in_desc || !ep_out_desc || !ep_intr_desc) {
ALOGE("endpoints not found\n");
usb_device_close(device);
return NULL;
}
if (usb_device_claim_interface(device, interface->bInterfaceNumber)) {
ALOGE("usb_device_claim_interface failed errno: %d\n", errno);
usb_device_close(device);
return NULL;
}
MtpDevice* mtpDevice = new MtpDevice(device, interface->bInterfaceNumber,
ep_in_desc, ep_out_desc, ep_intr_desc);
mtpDevice->initialize();
return mtpDevice;
}
}
usb_device_close(device);
ALOGE("device not found");
return NULL;
}
