auto import from //depot/cupcake/@135843
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
+