LayerState.cpp revision 8b33f032327f8de0dcc0e6d0d43ed80f834b51f6 
1/*
2 * Copyright (C) 2008 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#include <utils/Errors.h>
18#include <binder/Parcel.h>
19#include <gui/ISurfaceComposerClient.h>
20#include <gui/ISurfaceTexture.h>
21#include <private/gui/LayerState.h>
22
23namespace android {
24
25status_t layer_state_t::write(Parcel& output) const
26{
27    status_t err;
28
29    size_t len = transparentRegion.write(NULL, 0);
30    err = output.writeInt32(len);
31    if (err < NO_ERROR) return err;
32
33    void* buf = output.writeInplace(len);
34    if (buf == NULL) return NO_MEMORY;
35
36    err = transparentRegion.write(buf, len);
37    if (err < NO_ERROR) return err;
38
39    // NOTE: regions are at the end of the structure
40    size_t size = sizeof(layer_state_t);
41    size -= sizeof(transparentRegion);
42    err = output.write(this, size);
43    return err;
44}
45
46status_t layer_state_t::read(const Parcel& input)
47{
48    status_t err;
49    size_t len = input.readInt32();
50    void const* buf = input.readInplace(len);
51    if (buf == NULL) return NO_MEMORY;
52
53    err = transparentRegion.read(buf);
54    if (err < NO_ERROR) return err;
55
56    // NOTE: regions are at the end of the structure
57    size_t size = sizeof(layer_state_t);
58    size -= sizeof(transparentRegion);
59    input.read(this, size);
60    return NO_ERROR;
61}
62
63status_t ComposerState::write(Parcel& output) const {
64    output.writeStrongBinder(client->asBinder());
65    return state.write(output);
66}
67
68status_t ComposerState::read(const Parcel& input) {
69    client = interface_cast<ISurfaceComposerClient>(input.readStrongBinder());
70    return state.read(input);
71}
72
73
74status_t DisplayState::write(Parcel& output) const {
75    output.writeStrongBinder(surface->asBinder());
76    output.writeInt32(displayId);
77    output.writeInt32(layerStack);
78    output.writeInt32(orientation);
79    memcpy(output.writeInplace(sizeof(Rect)), &viewport, sizeof(Rect));
80    memcpy(output.writeInplace(sizeof(Rect)), &frame, sizeof(Rect));
81    return NO_ERROR;
82}
83
84status_t DisplayState::read(const Parcel& input) {
85    surface = interface_cast<ISurfaceTexture>(input.readStrongBinder());
86    displayId = input.readInt32();
87    layerStack = input.readInt32();
88    orientation = input.readInt32();
89    memcpy(&viewport, input.readInplace(sizeof(Rect)), sizeof(Rect));
90    memcpy(&frame,    input.readInplace(sizeof(Rect)), sizeof(Rect));
91    return NO_ERROR;
92}
93
94
95}; // namespace android
96