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Diffstat (limited to 'libs/gui/SurfaceControl.cpp')
| -rw-r--r-- | libs/gui/SurfaceControl.cpp | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/libs/gui/SurfaceControl.cpp b/libs/gui/SurfaceControl.cpp new file mode 100644 index 0000000..f4e88f5 --- /dev/null +++ b/libs/gui/SurfaceControl.cpp @@ -0,0 +1,190 @@ +/* + * 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 "SurfaceControl" + +#include <stdint.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include <android/native_window.h> + +#include <utils/CallStack.h> +#include <utils/Errors.h> +#include <utils/Log.h> +#include <utils/threads.h> + +#include <binder/IPCThreadState.h> + +#include <ui/DisplayInfo.h> +#include <ui/GraphicBuffer.h> +#include <ui/Rect.h> + +#include <gui/ISurfaceComposer.h> +#include <gui/Surface.h> +#include <gui/SurfaceComposerClient.h> +#include <gui/SurfaceControl.h> + +namespace android { + +// ============================================================================ +// SurfaceControl +// ============================================================================ + +SurfaceControl::SurfaceControl( + const sp<SurfaceComposerClient>& client, + const sp<IBinder>& handle, + const sp<IGraphicBufferProducer>& gbp) + : mClient(client), mHandle(handle), mGraphicBufferProducer(gbp) +{ +} + +SurfaceControl::~SurfaceControl() +{ + destroy(); +} + +void SurfaceControl::destroy() +{ + if (isValid()) { + mClient->destroySurface(mHandle); + } + // clear all references and trigger an IPC now, to make sure things + // happen without delay, since these resources are quite heavy. + mClient.clear(); + mHandle.clear(); + mGraphicBufferProducer.clear(); + IPCThreadState::self()->flushCommands(); +} + +void SurfaceControl::clear() +{ + // here, the window manager tells us explicitly that we should destroy + // the surface's resource. Soon after this call, it will also release + // its last reference (which will call the dtor); however, it is possible + // that a client living in the same process still holds references which + // would delay the call to the dtor -- that is why we need this explicit + // "clear()" call. + destroy(); +} + +bool SurfaceControl::isSameSurface( + const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs) +{ + if (lhs == 0 || rhs == 0) + return false; + return lhs->mHandle == rhs->mHandle; +} + +status_t SurfaceControl::setLayerStack(int32_t layerStack) { + status_t err = validate(); + if (err < 0) return err; + const sp<SurfaceComposerClient>& client(mClient); + return client->setLayerStack(mHandle, layerStack); +} +status_t SurfaceControl::setLayer(int32_t layer) { + status_t err = validate(); + if (err < 0) return err; + const sp<SurfaceComposerClient>& client(mClient); + return client->setLayer(mHandle, layer); +} +status_t SurfaceControl::setPosition(float x, float y) { + status_t err = validate(); + if (err < 0) return err; + const sp<SurfaceComposerClient>& client(mClient); + return client->setPosition(mHandle, x, y); +} +status_t SurfaceControl::setSize(uint32_t w, uint32_t h) { + status_t err = validate(); + if (err < 0) return err; + const sp<SurfaceComposerClient>& client(mClient); + return client->setSize(mHandle, w, h); +} +status_t SurfaceControl::hide() { + status_t err = validate(); + if (err < 0) return err; + const sp<SurfaceComposerClient>& client(mClient); + return client->hide(mHandle); +} +status_t SurfaceControl::show() { + status_t err = validate(); + if (err < 0) return err; + const sp<SurfaceComposerClient>& client(mClient); + return client->show(mHandle); +} +status_t SurfaceControl::setFlags(uint32_t flags, uint32_t mask) { + status_t err = validate(); + if (err < 0) return err; + const sp<SurfaceComposerClient>& client(mClient); + return client->setFlags(mHandle, flags, mask); +} +status_t SurfaceControl::setTransparentRegionHint(const Region& transparent) { + status_t err = validate(); + if (err < 0) return err; + const sp<SurfaceComposerClient>& client(mClient); + return client->setTransparentRegionHint(mHandle, transparent); +} +status_t SurfaceControl::setAlpha(float alpha) { + status_t err = validate(); + if (err < 0) return err; + const sp<SurfaceComposerClient>& client(mClient); + return client->setAlpha(mHandle, alpha); +} +status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dsdy, float dtdy) { + status_t err = validate(); + if (err < 0) return err; + const sp<SurfaceComposerClient>& client(mClient); + return client->setMatrix(mHandle, dsdx, dtdx, dsdy, dtdy); +} +status_t SurfaceControl::setCrop(const Rect& crop) { + status_t err = validate(); + if (err < 0) return err; + const sp<SurfaceComposerClient>& client(mClient); + return client->setCrop(mHandle, crop); +} + +status_t SurfaceControl::validate() const +{ + if (mHandle==0 || mClient==0) { + ALOGE("invalid handle (%p) or client (%p)", + mHandle.get(), mClient.get()); + return NO_INIT; + } + return NO_ERROR; +} + +status_t SurfaceControl::writeSurfaceToParcel( + const sp<SurfaceControl>& control, Parcel* parcel) +{ + sp<IGraphicBufferProducer> bp; + if (control != NULL) { + bp = control->mGraphicBufferProducer; + } + return parcel->writeStrongBinder(bp->asBinder()); +} + +sp<Surface> SurfaceControl::getSurface() const +{ + Mutex::Autolock _l(mLock); + if (mSurfaceData == 0) { + mSurfaceData = new Surface(mGraphicBufferProducer); + } + return mSurfaceData; +} + +// ---------------------------------------------------------------------------- +}; // namespace android |