The Tor Browser: media/omx-plugin/include/ics/utils/Flattenable.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     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  */

    17 #ifndef ANDROID_UTILS_FLATTENABLE_H

    18 #define ANDROID_UTILS_FLATTENABLE_H

    21 #include <stdint.h>

    22 #include <sys/types.h>

    23 #include <utils/Errors.h>

    25 namespace android {

    27 class Flattenable

    28 {

    29 public:

    30     // size in bytes of the flattened object

    31     virtual size_t getFlattenedSize() const = 0;

    33     // number of file descriptors to flatten

    34     virtual size_t getFdCount() const = 0;

    36     // flattens the object into buffer.

    37     // size should be at least of getFlattenedSize()

    38     // file descriptors are written in the fds[] array but ownership is

    39     // not transfered (ie: they must be dupped by the caller of

    40     // flatten() if needed).

    41     virtual status_t flatten(void* buffer, size_t size,

    42             int fds[], size_t count) const = 0;

    44     // unflattens the object from buffer.

    45     // size should be equal to the value of getFlattenedSize() when the

    46     // object was flattened.

    47     // unflattened file descriptors are found in the fds[] array and

    48     // don't need to be dupped(). ie: the caller of unflatten doesn't

    49     // keep ownership. If a fd is not retained by unflatten() it must be

    50     // explicitly closed.

    51     virtual status_t unflatten(void const* buffer, size_t size,

    52             int fds[], size_t count) = 0;

    54 protected:

    55     virtual ~Flattenable() = 0;

    57 };

    59 }; // namespace android

    62 #endif /* ANDROID_UTILS_FLATTENABLE_H */

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