Surface.cpp revision c90a77f1e5b42d8fcf336d2b9bd2259280814df2 
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 "Surface"
18
19#include <gui/view/Surface.h>
20
21#include <binder/Parcel.h>
22
23#include <utils/Log.h>
24
25#include <gui/IGraphicBufferProducer.h>
26
27namespace android {
28namespace view {
29
30status_t Surface::writeToParcel(Parcel* parcel) const {
31    return writeToParcel(parcel, false);
32}
33
34status_t Surface::writeToParcel(Parcel* parcel, bool nameAlreadyWritten) const {
35    if (parcel == nullptr) return BAD_VALUE;
36
37    status_t res = OK;
38
39    if (!nameAlreadyWritten) {
40        res = parcel->writeString16(name);
41        if (res != OK) return res;
42
43        /* isSingleBuffered defaults to no */
44        res = parcel->writeInt32(0);
45        if (res != OK) return res;
46    }
47
48    return IGraphicBufferProducer::exportToParcel(graphicBufferProducer, parcel);
49}
50
51status_t Surface::readFromParcel(const Parcel* parcel) {
52    return readFromParcel(parcel, false);
53}
54
55status_t Surface::readFromParcel(const Parcel* parcel, bool nameAlreadyRead) {
56    if (parcel == nullptr) return BAD_VALUE;
57
58    status_t res = OK;
59    if (!nameAlreadyRead) {
60        name = readMaybeEmptyString16(parcel);
61        // Discard this for now
62        int isSingleBuffered;
63        res = parcel->readInt32(&isSingleBuffered);
64        if (res != OK) {
65            ALOGE("Can't read isSingleBuffered");
66            return res;
67        }
68    }
69
70    graphicBufferProducer = IGraphicBufferProducer::createFromParcel(parcel);
71    return OK;
72}
73
74String16 Surface::readMaybeEmptyString16(const Parcel* parcel) {
75    size_t len;
76    const char16_t* str = parcel->readString16Inplace(&len);
77    if (str != nullptr) {
78        return String16(str, len);
79    } else {
80        return String16();
81    }
82}
83
84} // namespace view
85} // namespace android
86