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 "MtpResponsePacket"
18
19#include <stdio.h>
20#include <sys/types.h>
21#include <fcntl.h>
22
23#include "IMtpHandle.h"
24#include "MtpResponsePacket.h"
25
26#include <usbhost/usbhost.h>
27
28namespace android {
29
30MtpResponsePacket::MtpResponsePacket()
31    :   MtpPacket(512)
32{
33}
34
35MtpResponsePacket::~MtpResponsePacket() {
36}
37
38#ifdef MTP_DEVICE
39int MtpResponsePacket::write(IMtpHandle *h) {
40    putUInt32(MTP_CONTAINER_LENGTH_OFFSET, mPacketSize);
41    putUInt16(MTP_CONTAINER_TYPE_OFFSET, MTP_CONTAINER_TYPE_RESPONSE);
42    int ret = h->write(mBuffer, mPacketSize);
43    return (ret < 0 ? ret : 0);
44}
45#endif
46
47#ifdef MTP_HOST
48int MtpResponsePacket::read(struct usb_request *request) {
49    request->buffer = mBuffer;
50    request->buffer_length = mBufferSize;
51    int ret = transfer(request);
52     if (ret >= 0)
53        mPacketSize = ret;
54    else
55        mPacketSize = 0;
56    return ret;
57}
58#endif
59
60}  // namespace android
61
62