c18790018b
Adds a sourceCrop Rect parameter to screenshot commands, which allows clients to capture only a portion of the screen instead of the whole screen. Bug: 15137922 Change-Id: I629447573cd34ffb96334cde7ba02490b9ea06d8
448 lines
16 KiB
C++
448 lines
16 KiB
C++
/*
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* Copyright (C) 2007 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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// tag as surfaceflinger
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#define LOG_TAG "SurfaceFlinger"
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#include <stdint.h>
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#include <sys/types.h>
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#include <binder/Parcel.h>
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#include <binder/IMemory.h>
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#include <binder/IPCThreadState.h>
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#include <binder/IServiceManager.h>
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#include <gui/BitTube.h>
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#include <gui/IDisplayEventConnection.h>
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#include <gui/ISurfaceComposer.h>
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#include <gui/IGraphicBufferProducer.h>
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#include <private/gui/LayerState.h>
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#include <ui/DisplayInfo.h>
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#include <utils/Log.h>
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// ---------------------------------------------------------------------------
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namespace android {
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class IDisplayEventConnection;
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class BpSurfaceComposer : public BpInterface<ISurfaceComposer>
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{
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public:
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BpSurfaceComposer(const sp<IBinder>& impl)
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: BpInterface<ISurfaceComposer>(impl)
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{
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}
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virtual sp<ISurfaceComposerClient> createConnection()
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{
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uint32_t n;
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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remote()->transact(BnSurfaceComposer::CREATE_CONNECTION, data, &reply);
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return interface_cast<ISurfaceComposerClient>(reply.readStrongBinder());
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}
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virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc()
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{
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uint32_t n;
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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remote()->transact(BnSurfaceComposer::CREATE_GRAPHIC_BUFFER_ALLOC, data, &reply);
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return interface_cast<IGraphicBufferAlloc>(reply.readStrongBinder());
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}
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virtual void setTransactionState(
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const Vector<ComposerState>& state,
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const Vector<DisplayState>& displays,
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uint32_t flags)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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{
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Vector<ComposerState>::const_iterator b(state.begin());
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Vector<ComposerState>::const_iterator e(state.end());
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data.writeInt32(state.size());
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for ( ; b != e ; ++b ) {
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b->write(data);
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}
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}
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{
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Vector<DisplayState>::const_iterator b(displays.begin());
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Vector<DisplayState>::const_iterator e(displays.end());
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data.writeInt32(displays.size());
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for ( ; b != e ; ++b ) {
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b->write(data);
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}
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}
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data.writeInt32(flags);
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remote()->transact(BnSurfaceComposer::SET_TRANSACTION_STATE, data, &reply);
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}
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virtual void bootFinished()
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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remote()->transact(BnSurfaceComposer::BOOT_FINISHED, data, &reply);
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}
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virtual status_t captureScreen(const sp<IBinder>& display,
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const sp<IGraphicBufferProducer>& producer,
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Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
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uint32_t minLayerZ, uint32_t maxLayerZ,
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bool useIdentityTransform)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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data.writeStrongBinder(display);
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data.writeStrongBinder(producer->asBinder());
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data.write(sourceCrop);
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data.writeInt32(reqWidth);
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data.writeInt32(reqHeight);
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data.writeInt32(minLayerZ);
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data.writeInt32(maxLayerZ);
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data.writeInt32(static_cast<int32_t>(useIdentityTransform));
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remote()->transact(BnSurfaceComposer::CAPTURE_SCREEN, data, &reply);
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return reply.readInt32();
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}
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virtual bool authenticateSurfaceTexture(
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const sp<IGraphicBufferProducer>& bufferProducer) const
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{
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Parcel data, reply;
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int err = NO_ERROR;
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err = data.writeInterfaceToken(
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ISurfaceComposer::getInterfaceDescriptor());
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if (err != NO_ERROR) {
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ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
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"interface descriptor: %s (%d)", strerror(-err), -err);
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return false;
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}
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err = data.writeStrongBinder(bufferProducer->asBinder());
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if (err != NO_ERROR) {
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ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
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"strong binder to parcel: %s (%d)", strerror(-err), -err);
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return false;
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}
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err = remote()->transact(BnSurfaceComposer::AUTHENTICATE_SURFACE, data,
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&reply);
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if (err != NO_ERROR) {
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ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
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"performing transaction: %s (%d)", strerror(-err), -err);
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return false;
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}
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int32_t result = 0;
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err = reply.readInt32(&result);
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if (err != NO_ERROR) {
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ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
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"retrieving result: %s (%d)", strerror(-err), -err);
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return false;
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}
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return result != 0;
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}
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virtual sp<IDisplayEventConnection> createDisplayEventConnection()
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{
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Parcel data, reply;
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sp<IDisplayEventConnection> result;
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int err = data.writeInterfaceToken(
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ISurfaceComposer::getInterfaceDescriptor());
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if (err != NO_ERROR) {
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return result;
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}
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err = remote()->transact(
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BnSurfaceComposer::CREATE_DISPLAY_EVENT_CONNECTION,
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data, &reply);
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if (err != NO_ERROR) {
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ALOGE("ISurfaceComposer::createDisplayEventConnection: error performing "
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"transaction: %s (%d)", strerror(-err), -err);
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return result;
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}
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result = interface_cast<IDisplayEventConnection>(reply.readStrongBinder());
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return result;
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}
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virtual sp<IBinder> createDisplay(const String8& displayName, bool secure)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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data.writeString8(displayName);
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data.writeInt32(secure ? 1 : 0);
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remote()->transact(BnSurfaceComposer::CREATE_DISPLAY, data, &reply);
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return reply.readStrongBinder();
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}
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virtual void destroyDisplay(const sp<IBinder>& display)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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data.writeStrongBinder(display);
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remote()->transact(BnSurfaceComposer::DESTROY_DISPLAY, data, &reply);
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}
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virtual sp<IBinder> getBuiltInDisplay(int32_t id)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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data.writeInt32(id);
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remote()->transact(BnSurfaceComposer::GET_BUILT_IN_DISPLAY, data, &reply);
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return reply.readStrongBinder();
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}
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virtual void blank(const sp<IBinder>& display)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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data.writeStrongBinder(display);
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remote()->transact(BnSurfaceComposer::BLANK, data, &reply);
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}
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virtual void unblank(const sp<IBinder>& display)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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data.writeStrongBinder(display);
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remote()->transact(BnSurfaceComposer::UNBLANK, data, &reply);
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}
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virtual status_t getDisplayConfigs(const sp<IBinder>& display,
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Vector<DisplayInfo>* configs)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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data.writeStrongBinder(display);
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remote()->transact(BnSurfaceComposer::GET_DISPLAY_CONFIGS, data, &reply);
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status_t result = reply.readInt32();
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if (result == NO_ERROR) {
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size_t numConfigs = static_cast<size_t>(reply.readInt32());
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configs->clear();
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configs->resize(numConfigs);
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for (size_t c = 0; c < numConfigs; ++c) {
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memcpy(&(configs->editItemAt(c)),
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reply.readInplace(sizeof(DisplayInfo)),
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sizeof(DisplayInfo));
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}
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}
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return result;
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}
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virtual int getActiveConfig(const sp<IBinder>& display)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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data.writeStrongBinder(display);
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remote()->transact(BnSurfaceComposer::GET_ACTIVE_CONFIG, data, &reply);
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return reply.readInt32();
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}
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virtual status_t setActiveConfig(const sp<IBinder>& display, int id)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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data.writeStrongBinder(display);
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data.writeInt32(id);
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remote()->transact(BnSurfaceComposer::SET_ACTIVE_CONFIG, data, &reply);
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return reply.readInt32();
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}
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virtual status_t clearAnimationFrameStats() {
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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remote()->transact(BnSurfaceComposer::CLEAR_ANIMATION_FRAME_STATS, data, &reply);
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return reply.readInt32();
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}
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virtual status_t getAnimationFrameStats(FrameStats* outStats) const {
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Parcel data, reply;
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data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
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remote()->transact(BnSurfaceComposer::GET_ANIMATION_FRAME_STATS, data, &reply);
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reply.read(*outStats);
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return reply.readInt32();
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}
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};
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IMPLEMENT_META_INTERFACE(SurfaceComposer, "android.ui.ISurfaceComposer");
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// ----------------------------------------------------------------------
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status_t BnSurfaceComposer::onTransact(
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uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
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{
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switch(code) {
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case CREATE_CONNECTION: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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sp<IBinder> b = createConnection()->asBinder();
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reply->writeStrongBinder(b);
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return NO_ERROR;
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}
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case CREATE_GRAPHIC_BUFFER_ALLOC: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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sp<IBinder> b = createGraphicBufferAlloc()->asBinder();
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reply->writeStrongBinder(b);
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return NO_ERROR;
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}
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case SET_TRANSACTION_STATE: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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size_t count = data.readInt32();
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ComposerState s;
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Vector<ComposerState> state;
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state.setCapacity(count);
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for (size_t i=0 ; i<count ; i++) {
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s.read(data);
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state.add(s);
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}
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count = data.readInt32();
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DisplayState d;
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Vector<DisplayState> displays;
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displays.setCapacity(count);
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for (size_t i=0 ; i<count ; i++) {
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d.read(data);
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displays.add(d);
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}
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uint32_t flags = data.readInt32();
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setTransactionState(state, displays, flags);
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return NO_ERROR;
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}
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case BOOT_FINISHED: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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bootFinished();
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return NO_ERROR;
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}
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case CAPTURE_SCREEN: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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sp<IBinder> display = data.readStrongBinder();
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sp<IGraphicBufferProducer> producer =
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interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
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Rect sourceCrop;
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data.read(sourceCrop);
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uint32_t reqWidth = data.readInt32();
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uint32_t reqHeight = data.readInt32();
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uint32_t minLayerZ = data.readInt32();
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uint32_t maxLayerZ = data.readInt32();
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bool useIdentityTransform = static_cast<bool>(data.readInt32());
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status_t res = captureScreen(display, producer,
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sourceCrop, reqWidth, reqHeight, minLayerZ, maxLayerZ,
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useIdentityTransform);
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reply->writeInt32(res);
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return NO_ERROR;
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}
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case AUTHENTICATE_SURFACE: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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sp<IGraphicBufferProducer> bufferProducer =
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interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
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int32_t result = authenticateSurfaceTexture(bufferProducer) ? 1 : 0;
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reply->writeInt32(result);
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return NO_ERROR;
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}
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case CREATE_DISPLAY_EVENT_CONNECTION: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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sp<IDisplayEventConnection> connection(createDisplayEventConnection());
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reply->writeStrongBinder(connection->asBinder());
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return NO_ERROR;
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}
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case CREATE_DISPLAY: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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String8 displayName = data.readString8();
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bool secure = bool(data.readInt32());
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sp<IBinder> display(createDisplay(displayName, secure));
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reply->writeStrongBinder(display);
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return NO_ERROR;
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}
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case DESTROY_DISPLAY: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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sp<IBinder> display = data.readStrongBinder();
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destroyDisplay(display);
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return NO_ERROR;
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}
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case GET_BUILT_IN_DISPLAY: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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int32_t id = data.readInt32();
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sp<IBinder> display(getBuiltInDisplay(id));
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reply->writeStrongBinder(display);
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return NO_ERROR;
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}
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case BLANK: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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sp<IBinder> display = data.readStrongBinder();
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blank(display);
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return NO_ERROR;
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}
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case UNBLANK: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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sp<IBinder> display = data.readStrongBinder();
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unblank(display);
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return NO_ERROR;
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}
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case GET_DISPLAY_CONFIGS: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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Vector<DisplayInfo> configs;
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sp<IBinder> display = data.readStrongBinder();
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status_t result = getDisplayConfigs(display, &configs);
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reply->writeInt32(result);
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if (result == NO_ERROR) {
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reply->writeInt32(static_cast<int32_t>(configs.size()));
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for (size_t c = 0; c < configs.size(); ++c) {
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memcpy(reply->writeInplace(sizeof(DisplayInfo)),
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&configs[c], sizeof(DisplayInfo));
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}
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}
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return NO_ERROR;
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}
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case GET_ACTIVE_CONFIG: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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sp<IBinder> display = data.readStrongBinder();
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int id = getActiveConfig(display);
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reply->writeInt32(id);
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return NO_ERROR;
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}
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case SET_ACTIVE_CONFIG: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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sp<IBinder> display = data.readStrongBinder();
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int id = data.readInt32();
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status_t result = setActiveConfig(display, id);
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reply->writeInt32(result);
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return NO_ERROR;
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}
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case CLEAR_ANIMATION_FRAME_STATS: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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status_t result = clearAnimationFrameStats();
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reply->writeInt32(result);
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return NO_ERROR;
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}
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case GET_ANIMATION_FRAME_STATS: {
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CHECK_INTERFACE(ISurfaceComposer, data, reply);
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FrameStats stats;
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status_t result = getAnimationFrameStats(&stats);
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reply->write(stats);
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reply->writeInt32(result);
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return NO_ERROR;
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}
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default: {
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return BBinder::onTransact(code, data, reply, flags);
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}
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}
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// should be unreachable
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return NO_ERROR;
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}
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// ----------------------------------------------------------------------------
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};
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