8683fca395
this change introduces a new class LightFlattenable<> which is a protocol to flatten simple objects that don't require binders or file descriptors; the benefit of this protocol is that it doesn't require the objects to have a virtual table and give us a consitant way of doing this. we also introduce an implementation of this protocol for POD structures, LightFlattenablePod<>. Parcel has been update to handle this protocol automatically. Sensor, Rect, Point and Region now use this new protocol. Change-Id: Icb3ce7fa1d785249eb666f39c2129f2fc143ea4a
88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <utils/Errors.h>
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#include <binder/Parcel.h>
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#include <gui/ISurfaceComposerClient.h>
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#include <gui/ISurfaceTexture.h>
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#include <private/gui/LayerState.h>
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namespace android {
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status_t layer_state_t::write(Parcel& output) const
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{
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status_t err;
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err = output.write(transparentRegion);
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if (err < NO_ERROR) return err;
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// NOTE: regions are at the end of the structure
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size_t size = sizeof(layer_state_t);
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size -= sizeof(transparentRegion);
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err = output.write(this, size);
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return err;
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}
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status_t layer_state_t::read(const Parcel& input)
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{
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status_t err;
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err = input.read(transparentRegion);
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if (err < NO_ERROR) return err;
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// NOTE: regions are at the end of the structure
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size_t size = sizeof(layer_state_t);
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size -= sizeof(transparentRegion);
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input.read(this, size);
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return NO_ERROR;
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}
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status_t ComposerState::write(Parcel& output) const {
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output.writeStrongBinder(client->asBinder());
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return state.write(output);
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}
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status_t ComposerState::read(const Parcel& input) {
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client = interface_cast<ISurfaceComposerClient>(input.readStrongBinder());
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return state.read(input);
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}
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status_t DisplayState::write(Parcel& output) const {
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output.writeStrongBinder(token);
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output.writeStrongBinder(surface->asBinder());
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output.writeInt32(what);
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output.writeInt32(layerStack);
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output.writeInt32(orientation);
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output.write(viewport);
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output.write(frame);
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return NO_ERROR;
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}
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status_t DisplayState::read(const Parcel& input) {
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token = input.readStrongBinder();
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surface = interface_cast<ISurfaceTexture>(input.readStrongBinder());
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what = input.readInt32();
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layerStack = input.readInt32();
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orientation = input.readInt32();
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input.read(viewport);
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input.read(frame);
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return NO_ERROR;
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}
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}; // namespace android
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