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
27 namespace android {
28 namespace view {
29
writeToParcel(Parcel * parcel) const30 status_t Surface::writeToParcel(Parcel* parcel) const {
31 return writeToParcel(parcel, false);
32 }
33
writeToParcel(Parcel * parcel,bool nameAlreadyWritten) const34 status_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 res = IGraphicBufferProducer::exportToParcel(graphicBufferProducer, parcel);
49 if (res != OK) return res;
50 return parcel->writeStrongBinder(surfaceControlHandle);
51 }
52
readFromParcel(const Parcel * parcel)53 status_t Surface::readFromParcel(const Parcel* parcel) {
54 return readFromParcel(parcel, false);
55 }
56
readFromParcel(const Parcel * parcel,bool nameAlreadyRead)57 status_t Surface::readFromParcel(const Parcel* parcel, bool nameAlreadyRead) {
58 if (parcel == nullptr) return BAD_VALUE;
59
60 status_t res = OK;
61 if (!nameAlreadyRead) {
62 name = readMaybeEmptyString16(parcel);
63 // Discard this for now
64 int isSingleBuffered;
65 res = parcel->readInt32(&isSingleBuffered);
66 if (res != OK) {
67 ALOGE("Can't read isSingleBuffered");
68 return res;
69 }
70 }
71
72 graphicBufferProducer = IGraphicBufferProducer::createFromParcel(parcel);
73 surfaceControlHandle = parcel->readStrongBinder();
74 return OK;
75 }
76
readMaybeEmptyString16(const Parcel * parcel)77 String16 Surface::readMaybeEmptyString16(const Parcel* parcel) {
78 std::optional<String16> str;
79 parcel->readString16(&str);
80 return str.value_or(String16());
81 }
82
83 } // namespace view
84 } // namespace android
85