610 lines
17 KiB
C++
610 lines
17 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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#define LOG_TAG "SurfaceComposerClient"
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <utils/threads.h>
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#include <utils/SortedVector.h>
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#include <utils/Log.h>
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#include <utils/Singleton.h>
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#include <binder/IServiceManager.h>
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#include <binder/IMemory.h>
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#include <ui/DisplayInfo.h>
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#include <surfaceflinger/ISurfaceComposer.h>
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#include <surfaceflinger/ISurfaceComposerClient.h>
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#include <surfaceflinger/ISurface.h>
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#include <surfaceflinger/SurfaceComposerClient.h>
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#include <private/surfaceflinger/LayerState.h>
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#include <private/surfaceflinger/SharedBufferStack.h>
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namespace android {
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// ---------------------------------------------------------------------------
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ANDROID_SINGLETON_STATIC_INSTANCE(ComposerService);
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ComposerService::ComposerService()
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: Singleton<ComposerService>() {
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const String16 name("SurfaceFlinger");
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while (getService(name, &mComposerService) != NO_ERROR) {
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usleep(250000);
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}
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mServerCblkMemory = mComposerService->getCblk();
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mServerCblk = static_cast<surface_flinger_cblk_t volatile *>(
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mServerCblkMemory->getBase());
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}
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sp<ISurfaceComposer> ComposerService::getComposerService() {
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return ComposerService::getInstance().mComposerService;
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}
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surface_flinger_cblk_t const volatile * ComposerService::getControlBlock() {
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return ComposerService::getInstance().mServerCblk;
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}
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static inline sp<ISurfaceComposer> getComposerService() {
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return ComposerService::getComposerService();
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}
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static inline surface_flinger_cblk_t const volatile * get_cblk() {
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return ComposerService::getControlBlock();
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}
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// ---------------------------------------------------------------------------
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class Composer : public Singleton<Composer>
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{
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Mutex mLock;
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SortedVector< wp<SurfaceComposerClient> > mActiveConnections;
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SortedVector<sp<SurfaceComposerClient> > mOpenTransactions;
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Composer() : Singleton<Composer>() {
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}
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void addClientImpl(const sp<SurfaceComposerClient>& client) {
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Mutex::Autolock _l(mLock);
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mActiveConnections.add(client);
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}
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void removeClientImpl(const sp<SurfaceComposerClient>& client) {
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Mutex::Autolock _l(mLock);
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mActiveConnections.remove(client);
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}
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void openGlobalTransactionImpl()
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{
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Mutex::Autolock _l(mLock);
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if (mOpenTransactions.size()) {
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LOGE("openGlobalTransaction() called more than once. skipping.");
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return;
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}
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const size_t N = mActiveConnections.size();
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for (size_t i=0; i<N; i++) {
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sp<SurfaceComposerClient> client(mActiveConnections[i].promote());
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if (client != 0 && mOpenTransactions.indexOf(client) < 0) {
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if (client->openTransaction() == NO_ERROR) {
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mOpenTransactions.add(client);
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} else {
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LOGE("openTransaction on client %p failed", client.get());
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// let it go, it'll fail later when the user
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// tries to do something with the transaction
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}
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}
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}
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}
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void closeGlobalTransactionImpl()
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{
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mLock.lock();
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SortedVector< sp<SurfaceComposerClient> > clients(mOpenTransactions);
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mOpenTransactions.clear();
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mLock.unlock();
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sp<ISurfaceComposer> sm(getComposerService());
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sm->openGlobalTransaction();
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const size_t N = clients.size();
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for (size_t i=0; i<N; i++) {
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clients[i]->closeTransaction();
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}
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sm->closeGlobalTransaction();
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}
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friend class Singleton<Composer>;
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public:
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static void addClient(const sp<SurfaceComposerClient>& client) {
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Composer::getInstance().addClientImpl(client);
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}
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static void removeClient(const sp<SurfaceComposerClient>& client) {
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Composer::getInstance().removeClientImpl(client);
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}
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static void openGlobalTransaction() {
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Composer::getInstance().openGlobalTransactionImpl();
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}
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static void closeGlobalTransaction() {
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Composer::getInstance().closeGlobalTransactionImpl();
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}
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};
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ANDROID_SINGLETON_STATIC_INSTANCE(Composer);
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// ---------------------------------------------------------------------------
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static inline int compare_type( const layer_state_t& lhs,
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const layer_state_t& rhs) {
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if (lhs.surface < rhs.surface) return -1;
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if (lhs.surface > rhs.surface) return 1;
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return 0;
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}
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SurfaceComposerClient::SurfaceComposerClient()
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: mTransactionOpen(0), mPrebuiltLayerState(0), mStatus(NO_INIT)
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{
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}
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void SurfaceComposerClient::onFirstRef()
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{
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sp<ISurfaceComposer> sm(getComposerService());
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if (sm != 0) {
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sp<ISurfaceComposerClient> conn = sm->createConnection();
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if (conn != 0) {
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mClient = conn;
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Composer::addClient(this);
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mPrebuiltLayerState = new layer_state_t;
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mStatus = NO_ERROR;
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}
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}
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}
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SurfaceComposerClient::~SurfaceComposerClient()
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{
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delete mPrebuiltLayerState;
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dispose();
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}
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status_t SurfaceComposerClient::initCheck() const
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{
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return mStatus;
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}
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sp<IBinder> SurfaceComposerClient::connection() const
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{
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return (mClient != 0) ? mClient->asBinder() : 0;
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}
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status_t SurfaceComposerClient::linkToComposerDeath(
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const sp<IBinder::DeathRecipient>& recipient,
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void* cookie, uint32_t flags)
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{
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sp<ISurfaceComposer> sm(getComposerService());
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return sm->asBinder()->linkToDeath(recipient, cookie, flags);
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}
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void SurfaceComposerClient::dispose()
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{
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// this can be called more than once.
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sp<ISurfaceComposerClient> client;
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Mutex::Autolock _lm(mLock);
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if (mClient != 0) {
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Composer::removeClient(this);
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client = mClient; // hold ref while lock is held
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mClient.clear();
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}
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mStatus = NO_INIT;
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}
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status_t SurfaceComposerClient::getDisplayInfo(
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DisplayID dpy, DisplayInfo* info)
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{
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if (uint32_t(dpy)>=SharedBufferStack::NUM_DISPLAY_MAX)
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return BAD_VALUE;
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volatile surface_flinger_cblk_t const * cblk = get_cblk();
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volatile display_cblk_t const * dcblk = cblk->displays + dpy;
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info->w = dcblk->w;
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info->h = dcblk->h;
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info->orientation = dcblk->orientation;
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info->xdpi = dcblk->xdpi;
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info->ydpi = dcblk->ydpi;
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info->fps = dcblk->fps;
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info->density = dcblk->density;
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return getPixelFormatInfo(dcblk->format, &(info->pixelFormatInfo));
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}
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ssize_t SurfaceComposerClient::getDisplayWidth(DisplayID dpy)
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{
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if (uint32_t(dpy)>=SharedBufferStack::NUM_DISPLAY_MAX)
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return BAD_VALUE;
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volatile surface_flinger_cblk_t const * cblk = get_cblk();
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volatile display_cblk_t const * dcblk = cblk->displays + dpy;
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return dcblk->w;
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}
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ssize_t SurfaceComposerClient::getDisplayHeight(DisplayID dpy)
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{
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if (uint32_t(dpy)>=SharedBufferStack::NUM_DISPLAY_MAX)
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return BAD_VALUE;
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volatile surface_flinger_cblk_t const * cblk = get_cblk();
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volatile display_cblk_t const * dcblk = cblk->displays + dpy;
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return dcblk->h;
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}
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ssize_t SurfaceComposerClient::getDisplayOrientation(DisplayID dpy)
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{
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if (uint32_t(dpy)>=SharedBufferStack::NUM_DISPLAY_MAX)
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return BAD_VALUE;
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volatile surface_flinger_cblk_t const * cblk = get_cblk();
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volatile display_cblk_t const * dcblk = cblk->displays + dpy;
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return dcblk->orientation;
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}
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ssize_t SurfaceComposerClient::getNumberOfDisplays()
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{
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volatile surface_flinger_cblk_t const * cblk = get_cblk();
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uint32_t connected = cblk->connected;
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int n = 0;
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while (connected) {
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if (connected&1) n++;
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connected >>= 1;
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}
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return n;
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}
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sp<SurfaceControl> SurfaceComposerClient::createSurface(
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DisplayID display,
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uint32_t w,
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uint32_t h,
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PixelFormat format,
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uint32_t flags)
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{
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String8 name;
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const size_t SIZE = 128;
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char buffer[SIZE];
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snprintf(buffer, SIZE, "<pid_%d>", getpid());
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name.append(buffer);
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return SurfaceComposerClient::createSurface(name, display,
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w, h, format, flags);
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}
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sp<SurfaceControl> SurfaceComposerClient::createSurface(
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const String8& name,
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DisplayID display,
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uint32_t w,
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uint32_t h,
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PixelFormat format,
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uint32_t flags)
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{
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sp<SurfaceControl> result;
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if (mStatus == NO_ERROR) {
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ISurfaceComposerClient::surface_data_t data;
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sp<ISurface> surface = mClient->createSurface(&data, name,
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display, w, h, format, flags);
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if (surface != 0) {
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result = new SurfaceControl(this, surface, data, w, h, format, flags);
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}
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}
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return result;
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}
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status_t SurfaceComposerClient::destroySurface(SurfaceID sid)
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{
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if (mStatus != NO_ERROR)
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return mStatus;
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// it's okay to destroy a surface while a transaction is open,
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// (transactions really are a client-side concept)
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// however, this indicates probably a misuse of the API or a bug
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// in the client code.
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LOGW_IF(mTransactionOpen,
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"Destroying surface while a transaction is open. "
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"Client %p: destroying surface %d, mTransactionOpen=%d",
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this, sid, mTransactionOpen);
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status_t err = mClient->destroySurface(sid);
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return err;
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}
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void SurfaceComposerClient::openGlobalTransaction()
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{
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Composer::openGlobalTransaction();
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}
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void SurfaceComposerClient::closeGlobalTransaction()
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{
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Composer::closeGlobalTransaction();
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}
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status_t SurfaceComposerClient::freezeDisplay(DisplayID dpy, uint32_t flags)
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{
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sp<ISurfaceComposer> sm(getComposerService());
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return sm->freezeDisplay(dpy, flags);
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}
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status_t SurfaceComposerClient::unfreezeDisplay(DisplayID dpy, uint32_t flags)
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{
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sp<ISurfaceComposer> sm(getComposerService());
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return sm->unfreezeDisplay(dpy, flags);
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}
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int SurfaceComposerClient::setOrientation(DisplayID dpy,
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int orientation, uint32_t flags)
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{
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sp<ISurfaceComposer> sm(getComposerService());
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return sm->setOrientation(dpy, orientation, flags);
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}
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status_t SurfaceComposerClient::openTransaction()
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{
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if (mStatus != NO_ERROR)
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return mStatus;
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Mutex::Autolock _l(mLock);
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mTransactionOpen++;
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return NO_ERROR;
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}
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status_t SurfaceComposerClient::closeTransaction()
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{
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if (mStatus != NO_ERROR)
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return mStatus;
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Mutex::Autolock _l(mLock);
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if (mTransactionOpen <= 0) {
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LOGE( "closeTransaction (client %p, mTransactionOpen=%d) "
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"called more times than openTransaction()",
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this, mTransactionOpen);
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return INVALID_OPERATION;
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}
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if (mTransactionOpen >= 2) {
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mTransactionOpen--;
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return NO_ERROR;
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}
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mTransactionOpen = 0;
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const ssize_t count = mStates.size();
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if (count) {
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mClient->setState(count, mStates.array());
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mStates.clear();
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}
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return NO_ERROR;
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}
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layer_state_t* SurfaceComposerClient::get_state_l(SurfaceID index)
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{
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// API usage error, do nothing.
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if (mTransactionOpen<=0) {
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LOGE("Not in transaction (client=%p, SurfaceID=%d, mTransactionOpen=%d",
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this, int(index), mTransactionOpen);
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return 0;
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}
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// use mPrebuiltLayerState just to find out if we already have it
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layer_state_t& dummy(*mPrebuiltLayerState);
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dummy.surface = index;
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ssize_t i = mStates.indexOf(dummy);
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if (i < 0) {
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// we don't have it, add an initialized layer_state to our list
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i = mStates.add(dummy);
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}
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return mStates.editArray() + i;
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}
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layer_state_t* SurfaceComposerClient::lockLayerState(SurfaceID id)
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{
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layer_state_t* s;
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mLock.lock();
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s = get_state_l(id);
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if (!s) mLock.unlock();
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return s;
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}
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void SurfaceComposerClient::unlockLayerState()
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{
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mLock.unlock();
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}
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status_t SurfaceComposerClient::setPosition(SurfaceID id, int32_t x, int32_t y)
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{
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layer_state_t* s = lockLayerState(id);
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if (!s) return BAD_INDEX;
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s->what |= ISurfaceComposer::ePositionChanged;
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s->x = x;
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s->y = y;
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unlockLayerState();
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return NO_ERROR;
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}
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status_t SurfaceComposerClient::setSize(SurfaceID id, uint32_t w, uint32_t h)
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{
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layer_state_t* s = lockLayerState(id);
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if (!s) return BAD_INDEX;
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s->what |= ISurfaceComposer::eSizeChanged;
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s->w = w;
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s->h = h;
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unlockLayerState();
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return NO_ERROR;
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}
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status_t SurfaceComposerClient::setLayer(SurfaceID id, int32_t z)
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{
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layer_state_t* s = lockLayerState(id);
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if (!s) return BAD_INDEX;
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s->what |= ISurfaceComposer::eLayerChanged;
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s->z = z;
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unlockLayerState();
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return NO_ERROR;
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}
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status_t SurfaceComposerClient::hide(SurfaceID id)
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{
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return setFlags(id, ISurfaceComposer::eLayerHidden,
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ISurfaceComposer::eLayerHidden);
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}
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status_t SurfaceComposerClient::show(SurfaceID id, int32_t)
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{
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return setFlags(id, 0, ISurfaceComposer::eLayerHidden);
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}
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status_t SurfaceComposerClient::freeze(SurfaceID id)
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{
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return setFlags(id, ISurfaceComposer::eLayerFrozen,
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ISurfaceComposer::eLayerFrozen);
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}
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status_t SurfaceComposerClient::unfreeze(SurfaceID id)
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{
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return setFlags(id, 0, ISurfaceComposer::eLayerFrozen);
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}
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status_t SurfaceComposerClient::setFlags(SurfaceID id,
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uint32_t flags, uint32_t mask)
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{
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layer_state_t* s = lockLayerState(id);
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if (!s) return BAD_INDEX;
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s->what |= ISurfaceComposer::eVisibilityChanged;
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s->flags &= ~mask;
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s->flags |= (flags & mask);
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s->mask |= mask;
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unlockLayerState();
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return NO_ERROR;
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}
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status_t SurfaceComposerClient::setTransparentRegionHint(
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SurfaceID id, const Region& transparentRegion)
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{
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layer_state_t* s = lockLayerState(id);
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if (!s) return BAD_INDEX;
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s->what |= ISurfaceComposer::eTransparentRegionChanged;
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s->transparentRegion = transparentRegion;
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unlockLayerState();
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return NO_ERROR;
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}
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status_t SurfaceComposerClient::setAlpha(SurfaceID id, float alpha)
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{
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layer_state_t* s = lockLayerState(id);
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if (!s) return BAD_INDEX;
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s->what |= ISurfaceComposer::eAlphaChanged;
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s->alpha = alpha;
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unlockLayerState();
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return NO_ERROR;
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}
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status_t SurfaceComposerClient::setMatrix(
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SurfaceID id,
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float dsdx, float dtdx,
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float dsdy, float dtdy )
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{
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layer_state_t* s = lockLayerState(id);
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if (!s) return BAD_INDEX;
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s->what |= ISurfaceComposer::eMatrixChanged;
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layer_state_t::matrix22_t matrix;
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matrix.dsdx = dsdx;
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matrix.dtdx = dtdx;
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matrix.dsdy = dsdy;
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matrix.dtdy = dtdy;
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s->matrix = matrix;
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unlockLayerState();
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return NO_ERROR;
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}
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status_t SurfaceComposerClient::setFreezeTint(SurfaceID id, uint32_t tint)
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{
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layer_state_t* s = lockLayerState(id);
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if (!s) return BAD_INDEX;
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s->what |= ISurfaceComposer::eFreezeTintChanged;
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s->tint = tint;
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unlockLayerState();
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return NO_ERROR;
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}
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// ----------------------------------------------------------------------------
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ScreenshotClient::ScreenshotClient()
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: mWidth(0), mHeight(0), mFormat(PIXEL_FORMAT_NONE) {
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}
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status_t ScreenshotClient::update() {
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sp<ISurfaceComposer> s(ComposerService::getComposerService());
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if (s == NULL) return NO_INIT;
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mHeap = 0;
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return s->captureScreen(0, &mHeap,
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&mWidth, &mHeight, &mFormat, 0, 0,
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0, -1UL);
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}
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status_t ScreenshotClient::update(uint32_t reqWidth, uint32_t reqHeight) {
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sp<ISurfaceComposer> s(ComposerService::getComposerService());
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if (s == NULL) return NO_INIT;
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mHeap = 0;
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return s->captureScreen(0, &mHeap,
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&mWidth, &mHeight, &mFormat, reqWidth, reqHeight,
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0, -1UL);
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}
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status_t ScreenshotClient::update(uint32_t reqWidth, uint32_t reqHeight,
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uint32_t minLayerZ, uint32_t maxLayerZ) {
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sp<ISurfaceComposer> s(ComposerService::getComposerService());
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if (s == NULL) return NO_INIT;
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mHeap = 0;
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return s->captureScreen(0, &mHeap,
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&mWidth, &mHeight, &mFormat, reqWidth, reqHeight,
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minLayerZ, maxLayerZ);
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}
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void ScreenshotClient::release() {
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mHeap = 0;
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}
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void const* ScreenshotClient::getPixels() const {
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return mHeap->getBase();
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}
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uint32_t ScreenshotClient::getWidth() const {
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return mWidth;
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}
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uint32_t ScreenshotClient::getHeight() const {
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return mHeight;
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}
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PixelFormat ScreenshotClient::getFormat() const {
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return mFormat;
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}
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uint32_t ScreenshotClient::getStride() const {
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return mWidth;
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}
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size_t ScreenshotClient::getSize() const {
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return mHeap->getSize();
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}
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// ----------------------------------------------------------------------------
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}; // namespace android
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