8d3257a7dc
Change-Id: I5da48038fd5e4cdeefaeba42cdc74eb588b3448d Signed-off-by: Mike Lockwood <lockwood@android.com>
140 lines
3.6 KiB
C++
140 lines
3.6 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <usbhost/usbhost.h>
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#include "MtpClient.h"
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#include "MtpDebug.h"
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#include "MtpStringBuffer.h"
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namespace android {
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MtpClient::MtpClient(struct usb_endpoint *ep_in, struct usb_endpoint *ep_out,
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struct usb_endpoint *ep_intr)
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: mEndpointIn(ep_in),
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mEndpointOut(ep_out),
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mEndpointIntr(ep_intr),
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mSessionID(0),
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mTransactionID(0)
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{
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}
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MtpClient::~MtpClient() {
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}
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bool MtpClient::openSession() {
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printf("openSession\n");
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mSessionID = 0;
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mTransactionID = 0;
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MtpSessionID newSession = 1;
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mRequest.reset();
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mRequest.setParameter(1, newSession);
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if (!sendRequest(MTP_OPERATION_OPEN_SESSION))
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return false;
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MtpResponseCode ret = readResponse();
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if (ret == MTP_RESPONSE_SESSION_ALREADY_OPEN)
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newSession = mResponse.getParameter(1);
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else if (ret != MTP_RESPONSE_OK)
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return false;
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mSessionID = newSession;
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mTransactionID = 1;
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return true;
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}
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bool MtpClient::getDeviceInfo() {
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mRequest.reset();
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if (!sendRequest(MTP_OPERATION_GET_DEVICE_INFO))
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return false;
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if (!readData())
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return false;
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MtpResponseCode ret = readResponse();
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if (ret == MTP_RESPONSE_OK) {
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MtpStringBuffer string;
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// fill in device info
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printf("MTP standard version: %d\n", mData.getUInt16());
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printf("MTP Vendor Extension ID: %d\n", mData.getUInt32());
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printf("MTP vendor extension version: %d\n", mData.getUInt16());
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mData.getString(string);
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printf("vendor extension desc %s\n", (const char *)string);
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return true;
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}
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return false;
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}
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bool MtpClient::closeSession() {
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return true;
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}
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bool MtpClient::sendRequest(MtpOperationCode operation) {
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printf("sendRequest: %s\n", MtpDebug::getOperationCodeName(operation));
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mRequest.setOperationCode(operation);
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if (mTransactionID > 0)
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mRequest.setTransactionID(mTransactionID++);
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int ret = mRequest.write(mEndpointOut);
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mRequest.dump();
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return (ret > 0);
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}
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bool MtpClient::sendData(MtpOperationCode operation) {
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printf("sendData\n");
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mData.setOperationCode(mRequest.getOperationCode());
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mData.setTransactionID(mRequest.getTransactionID());
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int ret = mData.write(mEndpointOut);
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mData.dump();
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return (ret > 0);
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}
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bool MtpClient::readData() {
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int ret = mData.read(mEndpointIn);
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printf("readData returned %d\n", ret);
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if (ret >= MTP_CONTAINER_HEADER_SIZE) {
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mData.dump();
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return true;
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}
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else {
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printf("readResponse failed\n");
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return false;
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}
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}
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MtpResponseCode MtpClient::readResponse() {
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printf("readResponse\n");
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int ret = mResponse.read(mEndpointIn);
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if (ret >= MTP_CONTAINER_HEADER_SIZE) {
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mResponse.dump();
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return mResponse.getResponseCode();
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}
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else {
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printf("readResponse failed\n");
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return -1;
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}
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}
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} // namespace android
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