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authorbigbiff bigbiff <bigbiff@teamw.in>2018-12-19 00:39:53 +0100
committerEthan Yonker <dees_troy@teamw.in>2019-03-20 20:28:21 +0100
commitaf32bb9c4f4f06e92de3435ed2db3153c0701094 (patch)
tree622948fb3167dc17bb436c948d61df581d2e75f7 /mtp/ffs/MtpDevice.h
parentAdding Edl button in reboot menu (diff)
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diff --git a/mtp/ffs/MtpDevice.h b/mtp/ffs/MtpDevice.h
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+++ b/mtp/ffs/MtpDevice.h
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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.
+ */
+
+#ifndef _MTP_DEVICE_H
+#define _MTP_DEVICE_H
+
+#include "MtpEventPacket.h"
+#include "MtpDataPacket.h"
+#include "MtpRequestPacket.h"
+#include "MtpResponsePacket.h"
+#include "MtpTypes.h"
+
+#include <mutex>
+
+struct usb_device;
+struct usb_request;
+struct usb_endpoint_descriptor;
+
+class MtpDeviceInfo;
+class MtpEventPacket;
+class MtpObjectInfo;
+class MtpStorageInfo;
+
+class MtpDevice {
+private:
+ struct usb_device* mDevice;
+ int mInterface;
+ struct usb_request* mRequestIn1;
+ struct usb_request* mRequestIn2;
+ struct usb_request* mRequestOut;
+ struct usb_request* mRequestIntr;
+ MtpDeviceInfo* mDeviceInfo;
+ MtpPropertyList mDeviceProperties;
+
+ // current session ID
+ MtpSessionID mSessionID;
+ // current transaction ID
+ MtpTransactionID mTransactionID;
+
+ MtpRequestPacket mRequest;
+ MtpDataPacket mData;
+ MtpResponsePacket mResponse;
+ MtpEventPacket mEventPacket;
+
+ // set to true if we received a response packet instead of a data packet
+ bool mReceivedResponse;
+ bool mProcessingEvent;
+ int mCurrentEventHandle;
+
+ // to check if a sendObject request follows the last sendObjectInfo request.
+ MtpTransactionID mLastSendObjectInfoTransactionID;
+ MtpObjectHandle mLastSendObjectInfoObjectHandle;
+
+ // to ensure only one MTP transaction at a time
+ std::mutex mMutex;
+ std::mutex mEventMutex;
+ std::mutex mEventMutexForInterrupt;
+
+ // Remember the device's packet division mode.
+ UrbPacketDivisionMode mPacketDivisionMode;
+
+public:
+ typedef bool (*ReadObjectCallback)
+ (void* data, uint32_t offset, uint32_t length, void* clientData);
+
+ MtpDevice(struct usb_device* device,
+ int interface,
+ const struct usb_endpoint_descriptor *ep_in,
+ const struct usb_endpoint_descriptor *ep_out,
+ const struct usb_endpoint_descriptor *ep_intr);
+
+ static MtpDevice* open(const char* deviceName, int fd);
+
+ virtual ~MtpDevice();
+
+ void initialize();
+ void close();
+ void print();
+ const char* getDeviceName();
+
+ bool openSession();
+ bool closeSession();
+
+ MtpDeviceInfo* getDeviceInfo();
+ MtpStorageIDList* getStorageIDs();
+ MtpStorageInfo* getStorageInfo(MtpStorageID storageID);
+ MtpObjectHandleList* getObjectHandles(MtpStorageID storageID, MtpObjectFormat format,
+ MtpObjectHandle parent);
+ MtpObjectInfo* getObjectInfo(MtpObjectHandle handle);
+ void* getThumbnail(MtpObjectHandle handle, int& outLength);
+ MtpObjectHandle sendObjectInfo(MtpObjectInfo* info);
+ bool sendObject(MtpObjectHandle handle, int size, int srcFD);
+ bool deleteObject(MtpObjectHandle handle);
+ MtpObjectHandle getParent(MtpObjectHandle handle);
+ MtpStorageID getStorageID(MtpObjectHandle handle);
+
+ MtpObjectPropertyList* getObjectPropsSupported(MtpObjectFormat format);
+
+ MtpProperty* getDevicePropDesc(MtpDeviceProperty code);
+ MtpProperty* getObjectPropDesc(MtpObjectProperty code, MtpObjectFormat format);
+
+ // Reads value of |property| for |handle|. Returns true on success.
+ bool getObjectPropValue(MtpObjectHandle handle, MtpProperty* property);
+
+ bool readObject(MtpObjectHandle handle, ReadObjectCallback callback,
+ uint32_t objectSize, void* clientData);
+ bool readObject(MtpObjectHandle handle, const char* destPath, int group,
+ int perm);
+ bool readObject(MtpObjectHandle handle, int fd);
+ bool readPartialObject(MtpObjectHandle handle,
+ uint32_t offset,
+ uint32_t size,
+ uint32_t *writtenSize,
+ ReadObjectCallback callback,
+ void* clientData);
+ bool readPartialObject64(MtpObjectHandle handle,
+ uint64_t offset,
+ uint32_t size,
+ uint32_t *writtenSize,
+ ReadObjectCallback callback,
+ void* clientData);
+ // Starts a request to read MTP event from MTP device. It returns a request handle that
+ // can be used for blocking read or cancel. If other thread has already been processing an
+ // event returns -1.
+ int submitEventRequest();
+ // Waits for MTP event from the device and returns MTP event code. It blocks the current thread
+ // until it receives an event from the device. |handle| should be a request handle returned
+ // by |submitEventRequest|. The function writes event parameters to |parameters|. Returns 0 for
+ // cancellations. Returns -1 for errors.
+ int reapEventRequest(int handle, uint32_t (*parameters)[3]);
+ // Cancels an event request. |handle| should be request handle returned by
+ // |submitEventRequest|. If there is a thread blocked by |reapEventRequest| with the same
+ // |handle|, the thread will resume.
+ void discardEventRequest(int handle);
+
+private:
+ // If |objectSize| is not NULL, it checks object size before reading data bytes.
+ bool readObjectInternal(MtpObjectHandle handle,
+ ReadObjectCallback callback,
+ const uint32_t* objectSize,
+ void* clientData);
+ // If |objectSize| is not NULL, it checks object size before reading data bytes.
+ bool readData(ReadObjectCallback callback,
+ const uint32_t* objectSize,
+ uint32_t* writtenData,
+ void* clientData);
+ bool sendRequest(MtpOperationCode operation);
+ bool sendData();
+ bool readData();
+ bool writeDataHeader(MtpOperationCode operation, int dataLength);
+ MtpResponseCode readResponse();
+};
+
+#endif // _MTP_DEVICE_H