LayerState.cpp revision ca27f2500cff74ae1e08b3ae06f18e9b3414ffb7 
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/IGraphicBufferProducer.h>
21#include <gui/LayerState.h>
22
23namespace android {
24
25status_t layer_state_t::write(Parcel& output) const
26{
27    output.writeStrongBinder(surface);
28    output.writeUint32(what);
29    output.writeFloat(x);
30    output.writeFloat(y);
31    output.writeInt32(z);
32    output.writeUint32(w);
33    output.writeUint32(h);
34    output.writeUint32(layerStack);
35    output.writeFloat(alpha);
36    output.writeUint32(flags);
37    output.writeUint32(mask);
38    *reinterpret_cast<layer_state_t::matrix22_t *>(
39            output.writeInplace(sizeof(layer_state_t::matrix22_t))) = matrix;
40    output.write(crop);
41    output.write(finalCrop);
42    output.writeStrongBinder(barrierHandle);
43    output.writeStrongBinder(reparentHandle);
44    output.writeUint64(frameNumber);
45    output.writeInt32(overrideScalingMode);
46    output.writeStrongBinder(IInterface::asBinder(barrierGbp));
47    output.writeStrongBinder(relativeLayerHandle);
48    output.writeStrongBinder(parentHandleForChild);
49    output.writeFloat(color.r);
50    output.writeFloat(color.g);
51    output.writeFloat(color.b);
52    output.write(transparentRegion);
53    return NO_ERROR;
54}
55
56status_t layer_state_t::read(const Parcel& input)
57{
58    surface = input.readStrongBinder();
59    what = input.readUint32();
60    x = input.readFloat();
61    y = input.readFloat();
62    z = input.readInt32();
63    w = input.readUint32();
64    h = input.readUint32();
65    layerStack = input.readUint32();
66    alpha = input.readFloat();
67    flags = static_cast<uint8_t>(input.readUint32());
68    mask = static_cast<uint8_t>(input.readUint32());
69    const void* matrix_data = input.readInplace(sizeof(layer_state_t::matrix22_t));
70    if (matrix_data) {
71        matrix = *reinterpret_cast<layer_state_t::matrix22_t const *>(matrix_data);
72    } else {
73        return BAD_VALUE;
74    }
75    input.read(crop);
76    input.read(finalCrop);
77    barrierHandle = input.readStrongBinder();
78    reparentHandle = input.readStrongBinder();
79    frameNumber = input.readUint64();
80    overrideScalingMode = input.readInt32();
81    barrierGbp =
82        interface_cast<IGraphicBufferProducer>(input.readStrongBinder());
83    relativeLayerHandle = input.readStrongBinder();
84    parentHandleForChild = input.readStrongBinder();
85    color.r = input.readFloat();
86    color.g = input.readFloat();
87    color.b = input.readFloat();
88    input.read(transparentRegion);
89    return NO_ERROR;
90}
91
92status_t ComposerState::write(Parcel& output) const {
93    output.writeStrongBinder(IInterface::asBinder(client));
94    return state.write(output);
95}
96
97status_t ComposerState::read(const Parcel& input) {
98    client = interface_cast<ISurfaceComposerClient>(input.readStrongBinder());
99    return state.read(input);
100}
101
102
103DisplayState::DisplayState() :
104    what(0),
105    layerStack(0),
106    orientation(eOrientationDefault),
107    viewport(Rect::EMPTY_RECT),
108    frame(Rect::EMPTY_RECT),
109    width(0),
110    height(0) {
111}
112
113status_t DisplayState::write(Parcel& output) const {
114    output.writeStrongBinder(token);
115    output.writeStrongBinder(IInterface::asBinder(surface));
116    output.writeUint32(what);
117    output.writeUint32(layerStack);
118    output.writeUint32(orientation);
119    output.write(viewport);
120    output.write(frame);
121    output.writeUint32(width);
122    output.writeUint32(height);
123    return NO_ERROR;
124}
125
126status_t DisplayState::read(const Parcel& input) {
127    token = input.readStrongBinder();
128    surface = interface_cast<IGraphicBufferProducer>(input.readStrongBinder());
129    what = input.readUint32();
130    layerStack = input.readUint32();
131    orientation = input.readUint32();
132    input.read(viewport);
133    input.read(frame);
134    width = input.readUint32();
135    height = input.readUint32();
136    return NO_ERROR;
137}
138
139void DisplayState::merge(const DisplayState& other) {
140    if (other.what & eSurfaceChanged) {
141        what |= eSurfaceChanged;
142        surface = other.surface;
143    }
144    if (other.what & eLayerStackChanged) {
145        what |= eLayerStackChanged;
146        layerStack = other.layerStack;
147    }
148    if (other.what & eDisplayProjectionChanged) {
149        what |= eDisplayProjectionChanged;
150        orientation = other.orientation;
151        viewport = other.viewport;
152        frame = other.frame;
153    }
154    if (other.what & eDisplaySizeChanged) {
155        what |= eDisplaySizeChanged;
156        width = other.width;
157        height = other.height;
158    }
159}
160
161void layer_state_t::merge(const layer_state_t& other) {
162    if (other.what & ePositionChanged) {
163        what |= ePositionChanged;
164        x = other.x;
165        y = other.y;
166    }
167    if (other.what & eLayerChanged) {
168        what |= eLayerChanged;
169        z = other.z;
170    }
171    if (other.what & eSizeChanged) {
172        what |= eSizeChanged;
173        w = other.w;
174        h = other.h;
175    }
176    if (other.what & eAlphaChanged) {
177        what |= eAlphaChanged;
178        alpha = other.alpha;
179    }
180    if (other.what & eMatrixChanged) {
181        what |= eMatrixChanged;
182        matrix = other.matrix;
183    }
184    if (other.what & eTransparentRegionChanged) {
185        what |= eTransparentRegionChanged;
186        transparentRegion = other.transparentRegion;
187    }
188    if (other.what & eFlagsChanged) {
189        what |= eFlagsChanged;
190        flags = other.flags;
191        mask = other.mask;
192    }
193    if (other.what & eLayerStackChanged) {
194        what |= eLayerStackChanged;
195        layerStack = other.layerStack;
196    }
197    if (other.what & eCropChanged) {
198        what |= eCropChanged;
199        crop = other.crop;
200    }
201    if (other.what & eDeferTransaction) {
202        what |= eDeferTransaction;
203        barrierHandle = other.barrierHandle;
204        barrierGbp = other.barrierGbp;
205        frameNumber = other.frameNumber;
206    }
207    if (other.what & eFinalCropChanged) {
208        what |= eFinalCropChanged;
209        finalCrop = other.finalCrop;
210    }
211    if (other.what & eOverrideScalingModeChanged) {
212        what |= eOverrideScalingModeChanged;
213        overrideScalingMode = other.overrideScalingMode;
214    }
215    if (other.what & eGeometryAppliesWithResize) {
216        what |= eGeometryAppliesWithResize;
217    }
218    if (other.what & eReparentChildren) {
219        what |= eReparentChildren;
220        reparentHandle = other.reparentHandle;
221    }
222    if (other.what & eDetachChildren) {
223        what |= eDetachChildren;
224    }
225    if (other.what & eRelativeLayerChanged) {
226        what |= eRelativeLayerChanged;
227        z = other.z;
228        relativeLayerHandle = other.relativeLayerHandle;
229    }
230    if (other.what & eReparent) {
231        what |= eReparent;
232        parentHandleForChild = other.parentHandleForChild;
233    }
234    if (other.what & eDestroySurface) {
235        what |= eDestroySurface;
236    }
237}
238
239}; // namespace android
240