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 
28 namespace android {
29 
MtpResponsePacket()30 MtpResponsePacket::MtpResponsePacket()
31     :   MtpPacket(512)
32 {
33 }
34 
~MtpResponsePacket()35 MtpResponsePacket::~MtpResponsePacket() {
36 }
37 
38 #ifdef MTP_DEVICE
write(IMtpHandle * h)39 int 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
read(struct usb_request * request)48 int 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