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