1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define LOG_TAG "MtpEventPacket" 18 19 #include <stdio.h> 20 #include <sys/types.h> 21 #include <fcntl.h> 22 23 #include "IMtpHandle.h" 24 #include "MtpEventPacket.h" 25 26 #include <usbhost/usbhost.h> 27 28 namespace android { 29 30 MtpEventPacket::MtpEventPacket() 31 : MtpPacket(512) 32 { 33 } 34 35 MtpEventPacket::~MtpEventPacket() { 36 } 37 38 #ifdef MTP_DEVICE 39 int MtpEventPacket::write(IMtpHandle *h) { 40 struct mtp_event event; 41 42 putUInt32(MTP_CONTAINER_LENGTH_OFFSET, mPacketSize); 43 putUInt16(MTP_CONTAINER_TYPE_OFFSET, MTP_CONTAINER_TYPE_EVENT); 44 45 event.data = mBuffer; 46 event.length = mPacketSize; 47 int ret = h->sendEvent(event); 48 return (ret < 0 ? ret : 0); 49 } 50 #endif 51 52 #ifdef MTP_HOST 53 int MtpEventPacket::sendRequest(struct usb_request *request) { 54 request->buffer = mBuffer; 55 request->buffer_length = mBufferSize; 56 mPacketSize = 0; 57 if (usb_request_queue(request)) { 58 ALOGE("usb_endpoint_queue failed, errno: %d", errno); 59 return -1; 60 } 61 return 0; 62 } 63 64 int MtpEventPacket::readResponse(struct usb_device *device) { 65 struct usb_request* const req = usb_request_wait(device, -1); 66 if (req) { 67 mPacketSize = req->actual_length; 68 return req->actual_length; 69 } else { 70 return -1; 71 } 72 } 73 #endif 74 75 } // namespace android 76
