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
28namespace android {
29
30MtpEventPacket::MtpEventPacket()
31    :   MtpPacket(512)
32{
33}
34
35MtpEventPacket::~MtpEventPacket() {
36}
37
38#ifdef MTP_DEVICE
39int 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
53int 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
64int 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