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Diffstat (limited to 'libs/ui/SurfaceComposerClient.cpp')
| -rw-r--r-- | libs/ui/SurfaceComposerClient.cpp | 1026 |
1 files changed, 1026 insertions, 0 deletions
diff --git a/libs/ui/SurfaceComposerClient.cpp b/libs/ui/SurfaceComposerClient.cpp new file mode 100644 index 0000000..9354a7a --- /dev/null +++ b/libs/ui/SurfaceComposerClient.cpp @@ -0,0 +1,1026 @@ +/* + * 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/IPCThreadState.h> +#include <utils/IServiceManager.h> +#include <utils/IMemory.h> +#include <utils/Log.h> + +#include <ui/ISurfaceComposer.h> +#include <ui/ISurfaceFlingerClient.h> +#include <ui/ISurface.h> +#include <ui/SurfaceComposerClient.h> +#include <ui/DisplayInfo.h> +#include <ui/Rect.h> +#include <ui/Point.h> + +#include <private/ui/SharedState.h> +#include <private/ui/LayerState.h> +#include <private/ui/SurfaceFlingerSynchro.h> + +#include <pixelflinger/pixelflinger.h> + +#include <utils/BpBinder.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<IMemory> gServerCblkMemory; +static volatile surface_flinger_cblk_t* gServerCblk; + +const sp<ISurfaceComposer>& _get_surface_manager() +{ + if (gSurfaceManager != 0) { + return gSurfaceManager; + } + + 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); + sp<ISurfaceComposer> sc(interface_cast<ISurfaceComposer>(binder)); + + Mutex::Autolock _l(gLock); + if (gSurfaceManager == 0) { + gSurfaceManager = sc; + } + return gSurfaceManager; +} + +static volatile surface_flinger_cblk_t const * get_cblk() +{ + if (gServerCblk == 0) { + const sp<ISurfaceComposer>& sm(_get_surface_manager()); + 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->pointer(); + LOGE_IF(gServerCblk==0, "Can't get server control block address"); + } + } + return gServerCblk; +} + +// --------------------------------------------------------------------------- + +static void copyBlt(const GGLSurface& dst, + const GGLSurface& src, const Region& reg) +{ + Region::iterator iterator(reg); + if (iterator) { + // NOTE: dst and src must be the same format + Rect r; + const size_t bpp = bytesPerPixel(src.format); + const size_t dbpr = dst.stride * bpp; + const size_t sbpr = src.stride * bpp; + while (iterator.iterate(&r)) { + ssize_t h = r.bottom - r.top; + if (h) { + size_t size = (r.right - r.left) * bpp; + uint8_t* s = src.data + (r.left + src.stride * r.top) * bpp; + uint8_t* d = dst.data + (r.left + dst.stride * r.top) * bpp; + if (dbpr==sbpr && size==sbpr) { + size *= h; + h = 1; + } + do { + memcpy(d, s, size); + d += dbpr; + s += sbpr; + } while (--h > 0); + } + } + } +} + +// --------------------------------------------------------------------------- + +surface_flinger_cblk_t::surface_flinger_cblk_t() +{ +} + +// --------------------------------------------------------------------------- + +per_client_cblk_t::per_client_cblk_t() +{ +} + +// these functions are used by the clients +inline status_t per_client_cblk_t::validate(size_t i) const { + if (uint32_t(i) >= NUM_LAYERS_MAX) + return BAD_INDEX; + if (layers[i].swapState & eInvalidSurface) + return NO_MEMORY; + return NO_ERROR; +} + +int32_t per_client_cblk_t::lock_layer(size_t i, uint32_t flags) +{ + int32_t index; + uint32_t state; + int timeout = 0; + status_t result; + layer_cblk_t * const layer = layers + i; + const bool blocking = flags & BLOCKING; + const bool inspect = flags & INSPECT; + + do { + state = layer->swapState; + + if (UNLIKELY((state&(eFlipRequested|eNextFlipPending)) == eNextFlipPending)) { + LOGE("eNextFlipPending set but eFlipRequested not set, " + "layer=%d (lcblk=%p), state=%08x", + int(i), layer, int(state)); + return INVALID_OPERATION; + } + + if (UNLIKELY(state&eLocked)) { + LOGE("eLocked set when entering lock_layer(), " + "layer=%d (lcblk=%p), state=%08x", + int(i), layer, int(state)); + return WOULD_BLOCK; + } + + + if (state & (eFlipRequested | eNextFlipPending | eResizeRequested + | eInvalidSurface)) + { + int32_t resizeIndex; + Mutex::Autolock _l(lock); + // might block for a very short amount of time + // will never cause the server to block (trylock()) + + goto start_loop_here; + + // We block the client if: + // eNextFlipPending: we've used both buffers already, so we need to + // wait for one to become availlable. + // eResizeRequested: the buffer we're going to acquire is being + // resized. Block until it is done. + // eFlipRequested && eBusy: the buffer we're going to acquire is + // currently in use by the server. + // eInvalidSurface: this is a special case, we don't block in this + // case, we just return an error. + + while((state & (eNextFlipPending|eInvalidSurface)) || + (state & ((resizeIndex) ? eResizeBuffer1 : eResizeBuffer0)) || + ((state & (eFlipRequested|eBusy)) == (eFlipRequested|eBusy)) ) + { + if (state & eInvalidSurface) + return NO_MEMORY; + + if (!blocking) + return WOULD_BLOCK; + + timeout = 0; + result = cv.waitRelative(lock, seconds(1)); + if (__builtin_expect(result!=NO_ERROR, false)) { + const int newState = layer->swapState; + LOGW( "lock_layer timed out (is the CPU pegged?) " + "layer=%d, lcblk=%p, state=%08x (was %08x)", + int(i), layer, newState, int(state)); + timeout = newState != int(state); + } + + start_loop_here: + state = layer->swapState; + resizeIndex = (state&eIndex) ^ ((state&eFlipRequested)>>1); + } + + LOGW_IF(timeout, + "lock_layer() timed out but didn't appear to need " + "to be locked and we recovered " + "(layer=%d, lcblk=%p, state=%08x)", + int(i), layer, int(state)); + } + + // eFlipRequested is not set and cannot be set by another thread: it's + // safe to use the first buffer without synchronization. + + // Choose the index depending on eFlipRequested. + // When it's set, choose the 'other' buffer. + index = (state&eIndex) ^ ((state&eFlipRequested)>>1); + + // make sure this buffer is valid + if (layer->surface[index].bits_offset < 0) { + return status_t(layer->surface[index].bits_offset); + } + + if (inspect) { + // we just want to inspect this layer. don't lock it. + goto done; + } + + // last thing before we're done, we need to atomically lock the state + } while (android_atomic_cmpxchg(state, state|eLocked, &(layer->swapState))); + + VERBOSE("locked layer=%d (lcblk=%p), buffer=%d, state=0x%08x", + int(i), layer, int(index), int(state)); + + // store the index of the locked buffer (for client use only) + layer->flags &= ~eBufferIndex; + layer->flags |= ((index << eBufferIndexShift) & eBufferIndex); + +done: + return index; +} + +uint32_t per_client_cblk_t::unlock_layer_and_post(size_t i) +{ + // atomically set eFlipRequested and clear eLocked and optionnaly + // set eNextFlipPending if eFlipRequested was already set + + layer_cblk_t * const layer = layers + i; + int32_t oldvalue, newvalue; + do { + oldvalue = layer->swapState; + // get current value + + newvalue = oldvalue & ~eLocked; + // clear eLocked + + newvalue |= eFlipRequested; + // set eFlipRequested + + if (oldvalue & eFlipRequested) + newvalue |= eNextFlipPending; + // if eFlipRequested was alread set, set eNextFlipPending + + } while (android_atomic_cmpxchg(oldvalue, newvalue, &(layer->swapState))); + + VERBOSE("request pageflip for layer=%d, buffer=%d, state=0x%08x", + int(i), int((layer->flags & eBufferIndex) >> eBufferIndexShift), + int(newvalue)); + + // from this point, the server can kick in at anytime and use the first + // buffer, so we cannot use it anymore, and we must use the 'other' + // buffer instead (or wait if it is not availlable yet, see lock_layer). + + return newvalue; +} + +void per_client_cblk_t::unlock_layer(size_t i) +{ + layer_cblk_t * const layer = layers + i; + android_atomic_and(~eLocked, &layer->swapState); +} + +// --------------------------------------------------------------------------- + +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() +{ + const sp<ISurfaceComposer>& sm(_get_surface_manager()); + 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)); +} + +void SurfaceComposerClient::_init( + const sp<ISurfaceComposer>& sm, const sp<ISurfaceFlingerClient>& conn) +{ + VERBOSE("Creating client %p, conn %p", this, conn.get()); + + mSignalServer = 0; + mPrebuiltLayerState = 0; + mTransactionOpen = 0; + mStatus = NO_ERROR; + mControl = 0; + + mClient = conn; + if (mClient == 0) { + mStatus = NO_INIT; + return; + } + + mClient->getControlBlocks(&mControlMemory); + mSignalServer = new SurfaceFlingerSynchro(sm); + mControl = static_cast<per_client_cblk_t *>(mControlMemory->pointer()); +} + +SurfaceComposerClient::~SurfaceComposerClient() +{ + VERBOSE("Destroying client %p, conn %p", this, mClient.get()); + dispose(); +} + +status_t SurfaceComposerClient::initCheck() const +{ + return mStatus; +} + +status_t SurfaceComposerClient::validateSurface( + per_client_cblk_t const* cblk, Surface const * surface) +{ + SurfaceID index = surface->ID(); + if (cblk == 0) { + LOGE("cblk is null (surface id=%d, identity=%u)", + index, surface->getIdentity()); + return NO_INIT; + } + + status_t err = cblk->validate(index); + if (err != NO_ERROR) { + LOGE("surface (id=%d, identity=%u) is invalid, err=%d (%s)", + index, surface->getIdentity(), err, strerror(-err)); + return err; + } + + if (surface->getIdentity() != uint32_t(cblk->layers[index].identity)) { + LOGE("using an invalid surface id=%d, identity=%u should be %d", + index, surface->getIdentity(), cblk->layers[index].identity); + return NO_INIT; + } + + return NO_ERROR; +} + +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. + const sp<ISurfaceComposer>& sm(_get_surface_manager()); + 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<IMemory> controlMemory; + sp<ISurfaceFlingerClient> client; + sp<IMemoryHeap> surfaceHeap; + + { + Mutex::Autolock _lg(gLock); + Mutex::Autolock _lm(mLock); + + delete mSignalServer; + 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; + surfaceHeap = mSurfaceHeap; + mControlMemory.clear(); + mSurfaceHeap.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; +} + +sp<Surface> SurfaceComposerClient::createSurface( + int pid, + DisplayID display, + uint32_t w, + uint32_t h, + PixelFormat format, + uint32_t flags) +{ + sp<Surface> result; + if (mStatus == NO_ERROR) { + ISurfaceFlingerClient::surface_data_t data; + sp<ISurface> surface = mClient->createSurface(&data, pid, + display, w, h, format, flags); + if (surface != 0) { + if (uint32_t(data.token) < NUM_LAYERS_MAX) { + result = new Surface(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; +} + +status_t SurfaceComposerClient::nextBuffer(Surface* surface, + Surface::SurfaceInfo* info) +{ + SurfaceID index = surface->ID(); + per_client_cblk_t* const cblk = mControl; + status_t err = validateSurface(cblk, surface); + if (err != NO_ERROR) + return err; + + int32_t backIdx = surface->mBackbufferIndex; + layer_cblk_t* const lcblk = &(cblk->layers[index]); + const surface_info_t* const front = lcblk->surface + (1-backIdx); + info->w = front->w; + info->h = front->h; + info->format = front->format; + info->base = surface->heapBase(1-backIdx); + info->bits = reinterpret_cast<void*>(intptr_t(info->base) + front->bits_offset); + info->bpr = front->bpr; + + return 0; +} + +status_t SurfaceComposerClient::lockSurface( + Surface* surface, + Surface::SurfaceInfo* other, + Region* dirty, + bool blocking) +{ + Mutex::Autolock _l(surface->getLock()); + + SurfaceID index = surface->ID(); + per_client_cblk_t* const cblk = mControl; + status_t err = validateSurface(cblk, surface); + if (err != NO_ERROR) + return err; + + int32_t backIdx = cblk->lock_layer(size_t(index), + per_client_cblk_t::BLOCKING); + if (backIdx >= 0) { + surface->mBackbufferIndex = backIdx; + layer_cblk_t* const lcblk = &(cblk->layers[index]); + const surface_info_t* const back = lcblk->surface + backIdx; + const surface_info_t* const front = lcblk->surface + (1-backIdx); + other->w = back->w; + other->h = back->h; + other->format = back->format; + other->base = surface->heapBase(backIdx); + other->bits = reinterpret_cast<void*>(intptr_t(other->base) + back->bits_offset); + other->bpr = back->bpr; + + const Rect bounds(other->w, other->h); + Region newDirtyRegion; + + if (back->flags & surface_info_t::eBufferDirty) { + /* it is safe to write *back here, because we're guaranteed + * SurfaceFlinger is not touching it (since it just granted + * access to us) */ + const_cast<surface_info_t*>(back)->flags &= + ~surface_info_t::eBufferDirty; + + // content is meaningless in this case and the whole surface + // needs to be redrawn. + + newDirtyRegion.set(bounds); + if (dirty) { + *dirty = newDirtyRegion; + } + + //if (bytesPerPixel(other->format) == 4) { + // android_memset32( + // (uint32_t*)other->bits, 0xFF00FF00, other->h * other->bpr); + //} else { + // android_memset16( // fill with green + // (uint16_t*)other->bits, 0x7E0, other->h * other->bpr); + //} + } + else + { + if (dirty) { + dirty->andSelf(Region(bounds)); + newDirtyRegion = *dirty; + } else { + newDirtyRegion.set(bounds); + } + + Region copyback; + if (!(lcblk->flags & eNoCopyBack)) { + const Region previousDirtyRegion(surface->dirtyRegion()); + copyback = previousDirtyRegion.subtract(newDirtyRegion); + } + + if (!copyback.isEmpty()) { + // copy front to back + GGLSurface cb; + cb.version = sizeof(GGLSurface); + cb.width = back->w; + cb.height = back->h; + cb.stride = back->stride; + cb.data = (GGLubyte*)surface->heapBase(backIdx); + cb.data += back->bits_offset; + cb.format = back->format; + + GGLSurface t; + t.version = sizeof(GGLSurface); + t.width = front->w; + t.height = front->h; + t.stride = front->stride; + t.data = (GGLubyte*)surface->heapBase(1-backIdx); + t.data += front->bits_offset; + t.format = front->format; + + //const Region copyback(lcblk->region + 1-backIdx); + copyBlt(cb, t, copyback); + } + } + + // update dirty region + surface->setDirtyRegion(newDirtyRegion); + } + return (backIdx < 0) ? status_t(backIdx) : status_t(NO_ERROR); +} + +void SurfaceComposerClient::_signal_server() +{ + mSignalServer->signal(); +} + +void SurfaceComposerClient::_send_dirty_region( + layer_cblk_t* lcblk, const Region& dirty) +{ + const int32_t index = (lcblk->flags & eBufferIndex) >> eBufferIndexShift; + flat_region_t* flat_region = lcblk->region + index; + status_t err = dirty.write(flat_region, sizeof(flat_region_t)); + if (err < NO_ERROR) { + // region doesn't fit, use the bounds + const Region reg(dirty.bounds()); + reg.write(flat_region, sizeof(flat_region_t)); + } +} + +status_t SurfaceComposerClient::unlockAndPostSurface(Surface* surface) +{ + Mutex::Autolock _l(surface->getLock()); + + SurfaceID index = surface->ID(); + per_client_cblk_t* const cblk = mControl; + status_t err = validateSurface(cblk, surface); + if (err != NO_ERROR) + return err; + + Region dirty(surface->dirtyRegion()); + const Rect& swapRect(surface->swapRectangle()); + if (swapRect.isValid()) { + dirty.set(swapRect); + } + + // transmit the dirty region + layer_cblk_t* const lcblk = &(cblk->layers[index]); + _send_dirty_region(lcblk, dirty); + uint32_t newstate = cblk->unlock_layer_and_post(size_t(index)); + if (!(newstate & eNextFlipPending)) + _signal_server(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::unlockSurface(Surface* surface) +{ + Mutex::Autolock _l(surface->getLock()); + + SurfaceID index = surface->ID(); + per_client_cblk_t* const cblk = mControl; + status_t err = validateSurface(cblk, surface); + if (err != NO_ERROR) + return err; + + layer_cblk_t* const lcblk = &(cblk->layers[index]); + cblk->unlock_layer(size_t(index)); + return NO_ERROR; +} + +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); + if (N == 1) { + clients[0]->closeTransaction(); + } else { + const sp<ISurfaceComposer>& sm(_get_surface_manager()); + sm->openGlobalTransaction(); + for (size_t i=0; i<N; i++) { + clients[i]->closeTransaction(); + } + sm->closeGlobalTransaction(); + } +} + +status_t SurfaceComposerClient::freezeDisplay(DisplayID dpy, uint32_t flags) +{ + const sp<ISurfaceComposer>& sm(_get_surface_manager()); + return sm->freezeDisplay(dpy, flags); +} + +status_t SurfaceComposerClient::unfreezeDisplay(DisplayID dpy, uint32_t flags) +{ + const sp<ISurfaceComposer>& sm(_get_surface_manager()); + return sm->unfreezeDisplay(dpy, flags); +} + +int SurfaceComposerClient::setOrientation(DisplayID dpy, int orientation) +{ + const sp<ISurfaceComposer>& sm(_get_surface_manager()); + return sm->setOrientation(dpy, orientation); +} + +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(const sp<Surface>& surface) +{ + SurfaceID index = surface->ID(); + per_client_cblk_t* const cblk = mControl; + status_t err = validateSurface(cblk, surface.get()); + if (err != NO_ERROR) + return 0; + + // 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(const sp<Surface>& surface) +{ + layer_state_t* s; + mLock.lock(); + s = _get_state_l(surface); + if (!s) mLock.unlock(); + return s; +} + +void SurfaceComposerClient::_unlockLayerState() +{ + mLock.unlock(); +} + +status_t SurfaceComposerClient::setPosition(Surface* surface, int32_t x, int32_t y) +{ + layer_state_t* s = _lockLayerState(surface); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::ePositionChanged; + s->x = x; + s->y = y; + _unlockLayerState(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::setSize(Surface* surface, uint32_t w, uint32_t h) +{ + layer_state_t* s = _lockLayerState(surface); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::eSizeChanged; + s->w = w; + s->h = h; + _unlockLayerState(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::setLayer(Surface* surface, int32_t z) +{ + layer_state_t* s = _lockLayerState(surface); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::eLayerChanged; + s->z = z; + _unlockLayerState(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::hide(Surface* surface) +{ + return setFlags(surface, ISurfaceComposer::eLayerHidden, + ISurfaceComposer::eLayerHidden); +} + +status_t SurfaceComposerClient::show(Surface* surface, int32_t) +{ + return setFlags(surface, 0, ISurfaceComposer::eLayerHidden); +} + +status_t SurfaceComposerClient::freeze(Surface* surface) +{ + return setFlags(surface, ISurfaceComposer::eLayerFrozen, + ISurfaceComposer::eLayerFrozen); +} + +status_t SurfaceComposerClient::unfreeze(Surface* surface) +{ + return setFlags(surface, 0, ISurfaceComposer::eLayerFrozen); +} + +status_t SurfaceComposerClient::setFlags(Surface* surface, + uint32_t flags, uint32_t mask) +{ + layer_state_t* s = _lockLayerState(surface); + 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( + Surface* surface, const Region& transparentRegion) +{ + layer_state_t* s = _lockLayerState(surface); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::eTransparentRegionChanged; + s->transparentRegion = transparentRegion; + _unlockLayerState(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::setAlpha(Surface* surface, float alpha) +{ + layer_state_t* s = _lockLayerState(surface); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::eAlphaChanged; + s->alpha = alpha; + _unlockLayerState(); + return NO_ERROR; +} + +status_t SurfaceComposerClient::setMatrix( + Surface* surface, + float dsdx, float dtdx, + float dsdy, float dtdy ) +{ + layer_state_t* s = _lockLayerState(surface); + 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(Surface* surface, uint32_t tint) +{ + layer_state_t* s = _lockLayerState(surface); + if (!s) return BAD_INDEX; + s->what |= ISurfaceComposer::eFreezeTintChanged; + s->tint = tint; + _unlockLayerState(); + return NO_ERROR; +} + +}; // namespace android + |