1/*
2 * Copyright (C) 2016 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#ifndef _MTP_FFS_COMPAT_HANDLE_H
18#define _MTP_FFS_COMPAT_HANDLE_H
19
20#include <MtpFfsHandle.h>
21
22namespace android {
23
24template <class T> class MtpFfsHandleTest;
25
26class MtpFfsCompatHandle : public MtpFfsHandle {
27    template <class T> friend class android::MtpFfsHandleTest;
28private:
29    int writeHandle(int fd, const void *data, size_t len);
30    int readHandle(int fd, void *data, size_t len);
31
32    size_t mMaxWrite;
33    size_t mMaxRead;
34
35public:
36    int read(void* data, size_t len) override;
37    int write(const void* data, size_t len) override;
38    int receiveFile(mtp_file_range mfr, bool zero_packet) override;
39    int sendFile(mtp_file_range mfr) override;
40
41    /**
42     * Open ffs endpoints and allocate necessary kernel and user memory.
43     * Will sleep until endpoints are enabled, for up to 1 second.
44     */
45    int start(bool ptp) override;
46
47    MtpFfsCompatHandle(int controlFd);
48    ~MtpFfsCompatHandle();
49};
50
51} // namespace android
52
53#endif // _MTP_FFS_COMPAT_HANDLE_H
54
55