diff options
Diffstat (limited to 'libs/surfaceflinger_client/SurfaceComposerClient.cpp')
| -rw-r--r-- | libs/surfaceflinger_client/SurfaceComposerClient.cpp | 642 |
1 files changed, 642 insertions, 0 deletions
diff --git a/libs/surfaceflinger_client/SurfaceComposerClient.cpp b/libs/surfaceflinger_client/SurfaceComposerClient.cpp new file mode 100644 index 0000000..3117495 --- /dev/null +++ b/libs/surfaceflinger_client/SurfaceComposerClient.cpp @@ -0,0 +1,642 @@ +/* + * Copyright (C) 2007 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define LOG_TAG "SurfaceComposerClient" + +#include <stdint.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include <cutils/memory.h> + +#include <utils/Atomic.h> +#include <utils/Errors.h> +#include <utils/threads.h> +#include <utils/KeyedVector.h> +#include <utils/Log.h> + +#include <binder/IServiceManager.h> +#include <binder/IMemory.h> + +#include <ui/DisplayInfo.h> +#include <ui/Rect.h> + +#include <surfaceflinger/ISurfaceComposer.h> +#include <surfaceflinger/ISurfaceFlingerClient.h> +#include <surfaceflinger/ISurface.h> +#include <surfaceflinger/SurfaceComposerClient.h> + +#include <private/surfaceflinger/LayerState.h> +#include <private/surfaceflinger/SharedBufferStack.h> + +#define VERBOSE(...) ((void)0) +//#define VERBOSE LOGD + +#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true )) +#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false )) + +namespace android { + +// --------------------------------------------------------------------------- + +// Must not be holding SurfaceComposerClient::mLock when acquiring gLock here. +static Mutex gLock; +static sp<ISurfaceComposer> gSurfaceManager; +static DefaultKeyedVector< sp<IBinder>, sp<SurfaceComposerClient> > gActiveConnections; +static SortedVector<sp<SurfaceComposerClient> > gOpenTransactions; +static sp<IMemoryHeap> gServerCblkMemory; +static volatile surface_flinger_cblk_t* gServerCblk; + +static sp<ISurfaceComposer> getComposerService() +{ + sp<ISurfaceComposer> sc; + Mutex::Autolock _l(gLock); + if (gSurfaceManager != 0) { + sc = gSurfaceManager; + } else { + // release the lock while we're waiting... + gLock.unlock(); + + sp<IBinder> binder; + sp<IServiceManager> sm = defaultServiceManager(); + do { + binder = sm->getService(String16("SurfaceFlinger")); + if (binder == 0) { + LOGW("SurfaceFlinger not published, waiting..."); + usleep(500000); // 0.5 s + } + } while(binder == 0); + + // grab the lock again for updating gSurfaceManager + gLock.lock(); + if (gSurfaceManager == 0) { + sc = interface_cast<ISurfaceComposer>(binder); + gSurfaceManager = sc; + } else { + sc = gSurfaceManager; + } + } + return sc; +} + +static volatile surface_flinger_cblk_t const * get_cblk() +{ + if (gServerCblk == 0) { + sp<ISurfaceComposer> sm(getComposerService()); + Mutex::Autolock _l(gLock); + if (gServerCblk == 0) { + gServerCblkMemory = sm->getCblk(); + LOGE_IF(gServerCblkMemory==0, "Can't get server control block"); + gServerCblk = (surface_flinger_cblk_t *)gServerCblkMemory->getBase(); + LOGE_IF(gServerCblk==0, "Can't get server control block address"); + } + } + return gServerCblk; +} + +// --------------------------------------------------------------------------- + +static inline int compare_type( const layer_state_t& lhs, + const layer_state_t& rhs) { + if (lhs.surface < rhs.surface) return -1; + if (lhs.surface > rhs.surface) return 1; + return 0; +} + +SurfaceComposerClient::SurfaceComposerClient() +{ + sp<ISurfaceComposer> sm(getComposerService()); + if (sm == 0) { + _init(0, 0); + return; + } + + _init(sm, sm->createConnection()); + + if (mClient != 0) { + Mutex::Autolock _l(gLock); + VERBOSE("Adding client %p to map", this); + gActiveConnections.add(mClient->asBinder(), this); + } +} + +SurfaceComposerClient::SurfaceComposerClient( + const sp<ISurfaceComposer>& sm, const sp<IBinder>& conn) +{ + _init(sm, interface_cast<ISurfaceFlingerClient>(conn)); +} + + +status_t SurfaceComposerClient::linkToComposerDeath( + const sp<IBinder::DeathRecipient>& recipient, + void* cookie, uint32_t flags) +{ + sp<ISurfaceComposer> sm(getComposerService()); + return sm->asBinder()->linkToDeath(recipient, cookie, flags); +} + +void SurfaceComposerClient::_init( + const sp<ISurfaceComposer>& sm, const sp<ISurfaceFlingerClient>& conn) +{ + VERBOSE("Creating client %p, conn %p", this, conn.get()); + + mPrebuiltLayerState = 0; + mTransactionOpen = 0; + mStatus = NO_ERROR; + mControl = 0; + + mClient = conn; + if (mClient == 0) { + mStatus = NO_INIT; + return; + } + + mControlMemory = mClient->getControlBlock(); + mSignalServer = sm; + mControl = static_cast<SharedClient *>(mControlMemory->getBase()); +} + +SurfaceComposerClient::~SurfaceComposerClient() +{ + VERBOSE("Destroying client %p, conn %p", this, mClient.get()); + dispose(); +} + +status_t SurfaceComposerClient::initCheck() const +{ + return mStatus; +} + +sp<IBinder> SurfaceComposerClient::connection() const +{ + return (mClient != 0) ? mClient->asBinder() : 0; +} + +sp<SurfaceComposerClient> +SurfaceComposerClient::clientForConnection(const sp<IBinder>& conn) +{ + sp<SurfaceComposerClient> client; + + { // scope for lock + Mutex::Autolock _l(gLock); + client = gActiveConnections.valueFor(conn); + } + + if (client == 0) { + // Need to make a new client. + sp<ISurfaceComposer> sm(getComposerService()); + client = new SurfaceComposerClient(sm, conn); + if (client != 0 && client->initCheck() == NO_ERROR) { + Mutex::Autolock _l(gLock); + gActiveConnections.add(conn, client); + //LOGD("we have %d connections", gActiveConnections.size()); + } else { + client.clear(); + } + } + + return client; +} + +void SurfaceComposerClient::dispose() +{ + // this can be called more than once. + + sp<IMemoryHeap> controlMemory; + sp<ISurfaceFlingerClient> client; + + { + Mutex::Autolock _lg(gLock); + Mutex::Autolock _lm(mLock); + + mSignalServer = 0; + + if (mClient != 0) { + client = mClient; + mClient.clear(); + + ssize_t i = gActiveConnections.indexOfKey(client->asBinder()); + if (i >= 0 && gActiveConnections.valueAt(i) == this) { + VERBOSE("Removing client %p from map at %d", this, int(i)); + gActiveConnections.removeItemsAt(i); + } + } + + delete mPrebuiltLayerState; + mPrebuiltLayerState = 0; + controlMemory = mControlMemory; + mControlMemory.clear(); + mControl = 0; + mStatus = NO_INIT; + } +} + +status_t SurfaceComposerClient::getDisplayInfo( + DisplayID dpy, DisplayInfo* info) +{ + if (uint32_t(dpy)>=NUM_DISPLAY_MAX) + return BAD_VALUE; + + volatile surface_flinger_cblk_t const * cblk = get_cblk(); + volatile display_cblk_t const * dcblk = cblk->displays + dpy; + + info->w = dcblk->w; + info->h = dcblk->h; + info->orientation = dcblk->orientation; + info->xdpi = dcblk->xdpi; + info->ydpi = dcblk->ydpi; + info->fps = dcblk->fps; + info->density = dcblk->density; + return getPixelFormatInfo(dcblk->format, &(info->pixelFormatInfo)); +} + +ssize_t SurfaceComposerClient::getDisplayWidth(DisplayID dpy) +{ + if (uint32_t(dpy)>=NUM_DISPLAY_MAX) + return BAD_VALUE; + volatile surface_flinger_cblk_t const * cblk = get_cblk(); + volatile display_cblk_t const * dcblk = cblk->displays + dpy; + return dcblk->w; +} + +ssize_t SurfaceComposerClient::getDisplayHeight(DisplayID dpy) +{ + if (uint32_t(dpy)>=NUM_DISPLAY_MAX) + return BAD_VALUE; + volatile surface_flinger_cblk_t const * cblk = get_cblk(); + volatile display_cblk_t const * dcblk = cblk->displays + dpy; + return dcblk->h; +} + +ssize_t SurfaceComposerClient::getDisplayOrientation(DisplayID dpy) +{ + if (uint32_t(dpy)>=NUM_DISPLAY_MAX) + return BAD_VALUE; + volatile surface_flinger_cblk_t const * cblk = get_cblk(); + volatile display_cblk_t const * dcblk = cblk->displays + dpy; + return dcblk->orientation; +} + +ssize_t SurfaceComposerClient::getNumberOfDisplays() +{ + volatile surface_flinger_cblk_t const * cblk = get_cblk(); + uint32_t connected = cblk->connected; + int n = 0; + while (connected) { + if (connected&1) n++; + connected >>= 1; + } + return n; +} + + +void SurfaceComposerClient::signalServer() +{ + mSignalServer->signal(); +} + +sp<SurfaceControl> SurfaceComposerClient::createSurface( + int pid, + DisplayID display, + uint32_t w, + uint32_t h, + PixelFormat format, + uint32_t flags) +{ + String8 name; + const size_t SIZE = 128; + char buffer[SIZE]; + snprintf(buffer, SIZE, "<pid_%d>", getpid()); + name.append(buffer); + + return SurfaceComposerClient::createSurface(pid, name, display, + w, h, format, flags); + +} + +sp<SurfaceControl> SurfaceComposerClient::createSurface( + int pid, + const String8& name, + DisplayID display, + uint32_t w, + uint32_t h, + PixelFormat format, + uint32_t flags) +{ + sp<SurfaceControl> result; + if (mStatus == NO_ERROR) { + ISurfaceFlingerClient::surface_data_t data; + sp<ISurface> surface = mClient->createSurface(&data, pid, name, + display, w, h, format, flags); + if (surface != 0) { + if (uint32_t(data.token) < NUM_LAYERS_MAX) { + result = new SurfaceControl(this, surface, data, w, h, format, flags); + } + } + } + return result; +} + +status_t SurfaceComposerClient::destroySurface(SurfaceID sid) +{ + if (mStatus != NO_ERROR) + return mStatus; + + // it's okay to destroy a surface while a transaction is open, + // (transactions really are a client-side concept) + // however, this indicates probably a misuse of the API or a bug + // in the client code. + LOGW_IF(mTransactionOpen, + "Destroying surface while a transaction is open. " + "Client %p: destroying surface %d, mTransactionOpen=%d", + this, sid, mTransactionOpen); + + status_t err = mClient->destroySurface(sid); + return err; +} + +void SurfaceComposerClient::openGlobalTransaction() +{ + Mutex::Autolock _l(gLock); + + if (gOpenTransactions.size()) { + LOGE("openGlobalTransaction() called more than once. skipping."); + return; + } + + const size_t N = gActiveConnections.size(); + VERBOSE("openGlobalTransaction (%ld clients)", N); + for (size_t i=0; i<N; i++) { + sp<SurfaceComposerClient> client(gActiveConnections.valueAt(i)); + if (gOpenTransactions.indexOf(client) < 0) { + if (client->openTransaction() == NO_ERROR) { + if (gOpenTransactions.add(client) < 0) { + // Ooops! + LOGE( "Unable to add a SurfaceComposerClient " + "to the global transaction set (out of memory?)"); + client->closeTransaction(); + // let it go, it'll fail later when the user + // tries to do something with the transaction + } + } else { + LOGE("openTransaction on client %p failed", client.get()); + // let it go, it'll fail later when the user + // tries to do something with the transaction + } + } + } +} + +void SurfaceComposerClient::closeGlobalTransaction() +{ + gLock.lock(); + SortedVector< sp<SurfaceComposerClient> > clients(gOpenTransactions); + gOpenTransactions.clear(); + gLock.unlock(); + + const size_t N = clients.size(); + VERBOSE("closeGlobalTransaction (%ld clients)", N); + + sp<ISurfaceComposer> sm(getComposerService()); + sm->openGlobalTransaction(); + for (size_t i=0; i<N; i++) { + clients[i]->closeTransaction(); + } + sm->closeGlobalTransaction(); + +} + + +status_t SurfaceComposerClient::freezeDisplay(DisplayID dpy, uint32_t flags) +{ + sp<ISurfaceComposer> sm(getComposerService()); + return sm->freezeDisplay(dpy, flags); +} + +status_t SurfaceComposerClient::unfreezeDisplay(DisplayID dpy, uint32_t flags) +{ + sp<ISurfaceComposer> sm(getComposerService()); + return sm->unfreezeDisplay(dpy, flags); +} + +int SurfaceComposerClient::setOrientation(DisplayID dpy, + int orientation, uint32_t flags) +{ + sp<ISurfaceComposer> sm(getComposerService()); + return sm->setOrientation(dpy, orientation, flags); +} + +status_t SurfaceComposerClient::openTransaction() +{ + if (mStatus != NO_ERROR) + return mStatus; + Mutex::Autolock _l(mLock); + VERBOSE( "openTransaction (client %p, mTransactionOpen=%d)", + this, mTransactionOpen); + mTransactionOpen++; + if (mPrebuiltLayerState == 0) { + mPrebuiltLayerState = new layer_state_t; + } + return NO_ERROR; +} + + +status_t SurfaceComposerClient::closeTransaction() +{ + if (mStatus != NO_ERROR) + return mStatus; + + Mutex::Autolock _l(mLock); + + VERBOSE( "closeTransaction (client %p, mTransactionOpen=%d)", + this, mTransactionOpen); + + if (mTransactionOpen <= 0) { + LOGE( "closeTransaction (client %p, mTransactionOpen=%d) " + "called more times than openTransaction()", + this, mTransactionOpen); + return INVALID_OPERATION; + } + + if (mTransactionOpen >= 2) { + mTransactionOpen--; + return NO_ERROR; + } + + mTransactionOpen = 0; + const ssize_t count = mStates.size(); + if (count) { + mClient->setState(count, mStates.array()); + mStates.clear(); + } + return NO_ERROR; +} + +layer_state_t* SurfaceComposerClient::_get_state_l(SurfaceID index) +{ + // API usage error, do nothing. + if (mTransactionOpen<=0) { + LOGE("Not in transaction (client=%p, SurfaceID=%d, mTransactionOpen=%d", + this, int(index), mTransactionOpen); + return 0; + } + + // use mPrebuiltLayerState just to find out if we already have it + layer_state_t& dummy = *mPrebuiltLayerState; + dummy.surface = index; + ssize_t i = mStates.indexOf(dummy); + if (i < 0) { + // we don't have it, add an initialized layer_state to our list + i = mStates.add(dummy); + } + return mStates.editArray() + i; +} + +layer_state_t* SurfaceComposerClient::_lockLayerState(SurfaceID id) +{ + layer_state_t* s; + mLock.lock(); + s = _get_state_l(id); + if (!s) mLock.unlock(); + return s; +} + +void SurfaceComposerClient::_unlockLayerState() +{ + mLock.unlock(); +} + +status_t SurfaceComposerClient::setPosition(SurfaceID id, int32_t x, int32_t y) +{ + layer_state_t* s = _lockLayerState(id); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::ePositionChanged; + s->x = x; + s->y = y; + _unlockLayerState(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::setSize(SurfaceID id, uint32_t w, uint32_t h) +{ + layer_state_t* s = _lockLayerState(id); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::eSizeChanged; + s->w = w; + s->h = h; + _unlockLayerState(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::setLayer(SurfaceID id, int32_t z) +{ + layer_state_t* s = _lockLayerState(id); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::eLayerChanged; + s->z = z; + _unlockLayerState(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::hide(SurfaceID id) +{ + return setFlags(id, ISurfaceComposer::eLayerHidden, + ISurfaceComposer::eLayerHidden); +} + +status_t SurfaceComposerClient::show(SurfaceID id, int32_t) +{ + return setFlags(id, 0, ISurfaceComposer::eLayerHidden); +} + +status_t SurfaceComposerClient::freeze(SurfaceID id) +{ + return setFlags(id, ISurfaceComposer::eLayerFrozen, + ISurfaceComposer::eLayerFrozen); +} + +status_t SurfaceComposerClient::unfreeze(SurfaceID id) +{ + return setFlags(id, 0, ISurfaceComposer::eLayerFrozen); +} + +status_t SurfaceComposerClient::setFlags(SurfaceID id, + uint32_t flags, uint32_t mask) +{ + layer_state_t* s = _lockLayerState(id); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::eVisibilityChanged; + s->flags &= ~mask; + s->flags |= (flags & mask); + s->mask |= mask; + _unlockLayerState(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::setTransparentRegionHint( + SurfaceID id, const Region& transparentRegion) +{ + layer_state_t* s = _lockLayerState(id); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::eTransparentRegionChanged; + s->transparentRegion = transparentRegion; + _unlockLayerState(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::setAlpha(SurfaceID id, float alpha) +{ + layer_state_t* s = _lockLayerState(id); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::eAlphaChanged; + s->alpha = alpha; + _unlockLayerState(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::setMatrix( + SurfaceID id, + float dsdx, float dtdx, + float dsdy, float dtdy ) +{ + layer_state_t* s = _lockLayerState(id); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::eMatrixChanged; + layer_state_t::matrix22_t matrix; + matrix.dsdx = dsdx; + matrix.dtdx = dtdx; + matrix.dsdy = dsdy; + matrix.dtdy = dtdy; + s->matrix = matrix; + _unlockLayerState(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::setFreezeTint(SurfaceID id, uint32_t tint) +{ + layer_state_t* s = _lockLayerState(id); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::eFreezeTintChanged; + s->tint = tint; + _unlockLayerState(); + return NO_ERROR; +} + +}; // namespace android + |