/* * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include namespace android { // ============================================================================ // SurfaceControl // ============================================================================ SurfaceControl::SurfaceControl( const sp& client, const sp& handle, const sp& 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& lhs, const sp& 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; return mClient->setLayerStack(mHandle, layerStack); } status_t SurfaceControl::setLayer(int32_t layer) { status_t err = validate(); if (err < 0) return err; return mClient->setLayer(mHandle, layer); } status_t SurfaceControl::setPosition(float x, float y) { status_t err = validate(); if (err < 0) return err; return mClient->setPosition(mHandle, x, y); } status_t SurfaceControl::setSize(uint32_t w, uint32_t h) { status_t err = validate(); if (err < 0) return err; return mClient->setSize(mHandle, w, h); } status_t SurfaceControl::hide() { status_t err = validate(); if (err < 0) return err; return mClient->hide(mHandle); } status_t SurfaceControl::show() { status_t err = validate(); if (err < 0) return err; return mClient->show(mHandle); } status_t SurfaceControl::setFlags(uint32_t flags, uint32_t mask) { status_t err = validate(); if (err < 0) return err; return mClient->setFlags(mHandle, flags, mask); } status_t SurfaceControl::setTransparentRegionHint(const Region& transparent) { status_t err = validate(); if (err < 0) return err; return mClient->setTransparentRegionHint(mHandle, transparent); } status_t SurfaceControl::setAlpha(float alpha) { status_t err = validate(); if (err < 0) return err; return mClient->setAlpha(mHandle, alpha); } status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dsdy, float dtdy) { status_t err = validate(); if (err < 0) return err; return mClient->setMatrix(mHandle, dsdx, dtdx, dsdy, dtdy); } status_t SurfaceControl::setCrop(const Rect& crop) { status_t err = validate(); if (err < 0) return err; return mClient->setCrop(mHandle, crop); } status_t SurfaceControl::clearLayerFrameStats() const { status_t err = validate(); if (err < 0) return err; const sp& client(mClient); return client->clearLayerFrameStats(mHandle); } status_t SurfaceControl::getLayerFrameStats(FrameStats* outStats) const { status_t err = validate(); if (err < 0) return err; const sp& client(mClient); return client->getLayerFrameStats(mHandle, outStats); } 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& control, Parcel* parcel) { sp bp; if (control != NULL) { bp = control->mGraphicBufferProducer; } return parcel->writeStrongBinder(bp->asBinder()); } sp SurfaceControl::getSurface() const { Mutex::Autolock _l(mLock); if (mSurfaceData == 0) { // This surface is always consumed by SurfaceFlinger, so the // producerControlledByApp value doesn't matter; using false. mSurfaceData = new Surface(mGraphicBufferProducer, false); } return mSurfaceData; } // ---------------------------------------------------------------------------- }; // namespace android