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/*
* Copyright (C) 2006 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 ANDROID_USB_API_ADB_ENDPOINT_OBJECT_H__
#define ANDROID_USB_API_ADB_ENDPOINT_OBJECT_H__
/** \file
This file consists of declaration of class AdbEndpointObject that
encapsulates a handle opened to an endpoint on our device.
*/
#include "adb_interface.h"
/** Class AdbEndpointObject encapsulates a handle opened to an endpoint on
our device.
This class implement functionality that is common for both, WinUsb and
legacy APIs.
*/
class ADBWIN_API_CLASS AdbEndpointObject : public AdbObjectHandle {
public:
/** \brief Constructs the object
@param[in] interface Parent interface for this object. Interface will be
referenced in this object's constructur and released in the
destructor.
@param[in] endpoint_id Endpoint ID (endpoint address) on the device.
@param[in] endpoint_index Zero-based endpoint index in the interface's
array of endpoints.
*/
AdbEndpointObject(AdbInterfaceObject* parent_interf,
UCHAR endpoint_id,
UCHAR endpoint_index);
protected:
/** \brief Destructs the object.
We hide destructor in order to prevent ourseves from accidentaly allocating
instances on the stack. If such attemp occur, compiler will error.
*/
virtual ~AdbEndpointObject();
//
// Abstract
//
protected:
/** \brief Common code for async read / write
@param[in] is_read Read or write selector.
@param[in,out] buffer Pointer to the buffer for read / write.
@param[in] bytes_to_transfer Number of bytes to be read / written.
@param[out] bytes_transferred Number of bytes read / written. Can be NULL.
@param[in] event_handle Event handle that should be signaled when async I/O
completes. Can be NULL. If it's not NULL this handle will be used to
initialize OVERLAPPED structure for this I/O.
@param[in] time_out A timeout (in milliseconds) required for this I/O to
complete. Zero value in this parameter means that there is no
timeout set for this I/O.
@return A handle to IO completion object or NULL on failure. If NULL is
returned GetLastError() provides extended error information.
*/
virtual ADBAPIHANDLE CommonAsyncReadWrite(bool is_read,
void* buffer,
ULONG bytes_to_transfer,
ULONG* bytes_transferred,
HANDLE event_handle,
ULONG time_out) = 0;
/** \brief Common code for sync read / write
@param[in] is_read Read or write selector.
@param[in,out] buffer Pointer to the buffer for read / write.
@param[in] bytes_to_transfer Number of bytes to be read / written.
@param[out] bytes_transferred Number of bytes read / written. Can be NULL.
@param[in] time_out A timeout (in milliseconds) required for this I/O to
complete. Zero value in this parameter means that there is no
timeout set for this I/O.
@return true on success, false on failure. If false is returned
GetLastError() provides extended error information.
*/
virtual bool CommonSyncReadWrite(bool is_read,
void* buffer,
ULONG bytes_to_transfer,
ULONG* bytes_transferred,
ULONG time_out) = 0;
//
// Operations
//
public:
/** \brief Gets information about this endpoint.
@param[out] info Upon successful completion will have endpoint information.
@return true on success, false on failure. If false is returned
GetLastError() provides extended error information.
*/
virtual bool GetEndpointInformation(AdbEndpointInformation* info);
/** \brief Reads from opened I/O object asynchronously
@param[out] buffer Pointer to the buffer that receives the data.
@param[in] bytes_to_read Number of bytes to be read.
@param[out] bytes_read Number of bytes read. Can be NULL.
@param[in] event_handle Event handle that should be signaled when async I/O
completes. Can be NULL. If it's not NULL this handle will be used to
initialize OVERLAPPED structure for this I/O.
@param[in] time_out A timeout (in milliseconds) required for this I/O to
complete. Zero value in this parameter means that there is no
timeout set for this I/O.
@return A handle to IO completion object or NULL on failure. If NULL is
returned GetLastError() provides extended error information.
*/
virtual ADBAPIHANDLE AsyncRead(void* buffer,
ULONG bytes_to_read,
ULONG* bytes_read,
HANDLE event_handle,
ULONG time_out);
/** \brief Writes to opened I/O object asynchronously
@param[in] buffer Pointer to the buffer containing the data to be written.
@param[in] bytes_to_write Number of bytes to be written.
@param[out] bytes_written Number of bytes written. Can be NULL.
@param[in] event_handle Event handle that should be signaled when async I/O
completes. Can be NULL. If it's not NULL this handle will be used to
initialize OVERLAPPED structure for this I/O.
@param[in] time_out A timeout (in milliseconds) required for this I/O to
complete. Zero value in this parameter means that there is no
timeout set for this I/O.
@return A handle to IO completion object or NULL on failure. If NULL is
returned GetLastError() provides extended error information.
*/
virtual ADBAPIHANDLE AsyncWrite(void* buffer,
ULONG bytes_to_write,
ULONG* bytes_written,
HANDLE event_handle,
ULONG time_out);
/** \brief Reads from opened I/O object synchronously
@param[out] buffer Pointer to the buffer that receives the data.
@param[in] bytes_to_read Number of bytes to be read.
@param[out] bytes_read Number of bytes read. Can be NULL.
@param[in] time_out A timeout (in milliseconds) required for this I/O to
complete. Zero value in this parameter means that there is no
timeout set for this I/O.
@return true on success and false on failure. If false is
returned GetLastError() provides extended error information.
*/
virtual bool SyncRead(void* buffer,
ULONG bytes_to_read,
ULONG* bytes_read,
ULONG time_out);
/** \brief Writes to opened I/O object synchronously
@param[in] buffer Pointer to the buffer containing the data to be written.
@param[in] bytes_to_write Number of bytes to be written.
@param[out] bytes_written Number of bytes written. Can be NULL.
@param[in] time_out A timeout (in milliseconds) required for this I/O to
complete. Zero value in this parameter means that there is no
timeout set for this I/O.
@return true on success and false on failure. If false is
returned GetLastError() provides extended error information.
*/
virtual bool SyncWrite(void* buffer,
ULONG bytes_to_write,
ULONG* bytes_written,
ULONG time_out);
public:
/// This is a helper for extracting object from the AdbObjectHandleMap
static AdbObjectType Type() {
return AdbObjectTypeEndpoint;
}
/// Gets parent interface
AdbInterfaceObject* parent_interface() const {
return parent_interface_;
}
/// Gets this endpoint ID
UCHAR endpoint_id() const {
return endpoint_id_;
}
/// Gets this endpoint index on the interface
UCHAR endpoint_index() const {
return endpoint_index_;
}
/// Gets parent interface handle
ADBAPIHANDLE GetParentInterfaceHandle() const {
return (NULL != parent_interface()) ? parent_interface()->adb_handle() :
NULL;
}
protected:
/// Parent interface
AdbInterfaceObject* parent_interface_;
/// This endpoint id
UCHAR endpoint_id_;
/// This endpoint index on the interface
UCHAR endpoint_index_;
};
#endif // ANDROID_USB_API_ADB_ENDPOINT_OBJECT_H__
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