media/omx-plugin/include/ics/utils/Flattenable.h@6474c204b198 (annotated)
media/omx-plugin/include/ics/utils/Flattenable.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright (C) 2010 The Android Open Source Project |
| michael@0 | 3 | * |
| michael@0 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| michael@0 | 5 | * you may not use this file except in compliance with the License. |
| michael@0 | 6 | * You may obtain a copy of the License at |
| michael@0 | 7 | * |
| michael@0 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| michael@0 | 9 | * |
| michael@0 | 10 | * Unless required by applicable law or agreed to in writing, software |
| michael@0 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| michael@0 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| michael@0 | 13 | * See the License for the specific language governing permissions and |
| michael@0 | 14 | * limitations under the License. |
| michael@0 | 15 | */ |
| michael@0 | 16 | |
| michael@0 | 17 | #ifndef ANDROID_UTILS_FLATTENABLE_H |
| michael@0 | 18 | #define ANDROID_UTILS_FLATTENABLE_H |
| michael@0 | 19 | |
| michael@0 | 20 | |
| michael@0 | 21 | #include <stdint.h> |
| michael@0 | 22 | #include <sys/types.h> |
| michael@0 | 23 | #include <utils/Errors.h> |
| michael@0 | 24 | |
| michael@0 | 25 | namespace android { |
| michael@0 | 26 | |
| michael@0 | 27 | class Flattenable |
| michael@0 | 28 | { |
| michael@0 | 29 | public: |
| michael@0 | 30 | // size in bytes of the flattened object |
| michael@0 | 31 | virtual size_t getFlattenedSize() const = 0; |
| michael@0 | 32 | |
| michael@0 | 33 | // number of file descriptors to flatten |
| michael@0 | 34 | virtual size_t getFdCount() const = 0; |
| michael@0 | 35 | |
| michael@0 | 36 | // flattens the object into buffer. |
| michael@0 | 37 | // size should be at least of getFlattenedSize() |
| michael@0 | 38 | // file descriptors are written in the fds[] array but ownership is |
| michael@0 | 39 | // not transfered (ie: they must be dupped by the caller of |
| michael@0 | 40 | // flatten() if needed). |
| michael@0 | 41 | virtual status_t flatten(void* buffer, size_t size, |
| michael@0 | 42 | int fds[], size_t count) const = 0; |
| michael@0 | 43 | |
| michael@0 | 44 | // unflattens the object from buffer. |
| michael@0 | 45 | // size should be equal to the value of getFlattenedSize() when the |
| michael@0 | 46 | // object was flattened. |
| michael@0 | 47 | // unflattened file descriptors are found in the fds[] array and |
| michael@0 | 48 | // don't need to be dupped(). ie: the caller of unflatten doesn't |
| michael@0 | 49 | // keep ownership. If a fd is not retained by unflatten() it must be |
| michael@0 | 50 | // explicitly closed. |
| michael@0 | 51 | virtual status_t unflatten(void const* buffer, size_t size, |
| michael@0 | 52 | int fds[], size_t count) = 0; |
| michael@0 | 53 | |
| michael@0 | 54 | protected: |
| michael@0 | 55 | virtual ~Flattenable() = 0; |
| michael@0 | 56 | |
| michael@0 | 57 | }; |
| michael@0 | 58 | |
| michael@0 | 59 | }; // namespace android |
| michael@0 | 60 | |
| michael@0 | 61 | |
| michael@0 | 62 | #endif /* ANDROID_UTILS_FLATTENABLE_H */ |
