1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define LOG_TAG "SurfaceControl" 18 19 #include <stdint.h> 20 #include <errno.h> 21 #include <sys/types.h> 22 #include <sys/stat.h> 23 24 #include <android/native_window.h> 25 26 #include <utils/Errors.h> 27 #include <utils/Log.h> 28 #include <utils/threads.h> 29 30 #include <binder/IPCThreadState.h> 31 32 #include <ui/DisplayInfo.h> 33 #include <ui/GraphicBuffer.h> 34 #include <ui/Rect.h> 35 36 #include <gui/BufferQueueCore.h> 37 #include <gui/ISurfaceComposer.h> 38 #include <gui/Surface.h> 39 #include <gui/SurfaceComposerClient.h> 40 #include <gui/SurfaceControl.h> 41 42 namespace android { 43 44 // ============================================================================ 45 // SurfaceControl 46 // ============================================================================ 47 48 SurfaceControl::SurfaceControl( 49 const sp<SurfaceComposerClient>& client, 50 const sp<IBinder>& handle, 51 const sp<IGraphicBufferProducer>& gbp) 52 : mClient(client), mHandle(handle), mGraphicBufferProducer(gbp) 53 { 54 } 55 56 SurfaceControl::~SurfaceControl() 57 { 58 destroy(); 59 } 60 61 void SurfaceControl::destroy() 62 { 63 if (isValid()) { 64 mClient->destroySurface(mHandle); 65 } 66 // clear all references and trigger an IPC now, to make sure things 67 // happen without delay, since these resources are quite heavy. 68 mClient.clear(); 69 mHandle.clear(); 70 mGraphicBufferProducer.clear(); 71 IPCThreadState::self()->flushCommands(); 72 } 73 74 void SurfaceControl::clear() 75 { 76 // here, the window manager tells us explicitly that we should destroy 77 // the surface's resource. Soon after this call, it will also release 78 // its last reference (which will call the dtor); however, it is possible 79 // that a client living in the same process still holds references which 80 // would delay the call to the dtor -- that is why we need this explicit 81 // "clear()" call. 82 destroy(); 83 } 84 85 void SurfaceControl::disconnect() { 86 if (mGraphicBufferProducer != NULL) { 87 mGraphicBufferProducer->disconnect( 88 BufferQueueCore::CURRENTLY_CONNECTED_API); 89 } 90 } 91 92 bool SurfaceControl::isSameSurface( 93 const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs) 94 { 95 if (lhs == 0 || rhs == 0) 96 return false; 97 return lhs->mHandle == rhs->mHandle; 98 } 99 100 status_t SurfaceControl::setLayerStack(uint32_t layerStack) { 101 status_t err = validate(); 102 if (err < 0) return err; 103 return mClient->setLayerStack(mHandle, layerStack); 104 } 105 106 status_t SurfaceControl::setLayer(int32_t layer) { 107 status_t err = validate(); 108 if (err < 0) return err; 109 return mClient->setLayer(mHandle, layer); 110 } 111 112 status_t SurfaceControl::setRelativeLayer(const sp<IBinder>& relativeTo, int32_t layer) { 113 status_t err = validate(); 114 if (err < 0) return err; 115 return mClient->setRelativeLayer(mHandle, relativeTo, layer); 116 } 117 118 status_t SurfaceControl::setPosition(float x, float y) { 119 status_t err = validate(); 120 if (err < 0) return err; 121 return mClient->setPosition(mHandle, x, y); 122 } 123 status_t SurfaceControl::setGeometryAppliesWithResize() { 124 status_t err = validate(); 125 if (err < 0) return err; 126 return mClient->setGeometryAppliesWithResize(mHandle); 127 } 128 status_t SurfaceControl::setSize(uint32_t w, uint32_t h) { 129 status_t err = validate(); 130 if (err < 0) return err; 131 return mClient->setSize(mHandle, w, h); 132 } 133 status_t SurfaceControl::hide() { 134 status_t err = validate(); 135 if (err < 0) return err; 136 return mClient->hide(mHandle); 137 } 138 status_t SurfaceControl::show() { 139 status_t err = validate(); 140 if (err < 0) return err; 141 return mClient->show(mHandle); 142 } 143 status_t SurfaceControl::setFlags(uint32_t flags, uint32_t mask) { 144 status_t err = validate(); 145 if (err < 0) return err; 146 return mClient->setFlags(mHandle, flags, mask); 147 } 148 status_t SurfaceControl::setTransparentRegionHint(const Region& transparent) { 149 status_t err = validate(); 150 if (err < 0) return err; 151 return mClient->setTransparentRegionHint(mHandle, transparent); 152 } 153 status_t SurfaceControl::setAlpha(float alpha) { 154 status_t err = validate(); 155 if (err < 0) return err; 156 return mClient->setAlpha(mHandle, alpha); 157 } 158 status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dtdy, float dsdy) { 159 status_t err = validate(); 160 if (err < 0) return err; 161 return mClient->setMatrix(mHandle, dsdx, dtdx, dtdy, dsdy); 162 } 163 status_t SurfaceControl::setCrop(const Rect& crop) { 164 status_t err = validate(); 165 if (err < 0) return err; 166 return mClient->setCrop(mHandle, crop); 167 } 168 status_t SurfaceControl::setFinalCrop(const Rect& crop) { 169 status_t err = validate(); 170 if (err < 0) return err; 171 return mClient->setFinalCrop(mHandle, crop); 172 } 173 174 status_t SurfaceControl::deferTransactionUntil(const sp<IBinder>& handle, 175 uint64_t frameNumber) { 176 status_t err = validate(); 177 if (err < 0) return err; 178 return mClient->deferTransactionUntil(mHandle, handle, frameNumber); 179 } 180 181 status_t SurfaceControl::deferTransactionUntil(const sp<Surface>& handle, 182 uint64_t frameNumber) { 183 status_t err = validate(); 184 if (err < 0) return err; 185 return mClient->deferTransactionUntil(mHandle, handle, frameNumber); 186 } 187 188 status_t SurfaceControl::reparentChildren(const sp<IBinder>& newParentHandle) { 189 status_t err = validate(); 190 if (err < 0) return err; 191 return mClient->reparentChildren(mHandle, newParentHandle); 192 } 193 194 status_t SurfaceControl::detachChildren() { 195 status_t err = validate(); 196 if (err < 0) return err; 197 return mClient->detachChildren(mHandle); 198 } 199 200 status_t SurfaceControl::setOverrideScalingMode(int32_t overrideScalingMode) { 201 status_t err = validate(); 202 if (err < 0) return err; 203 return mClient->setOverrideScalingMode(mHandle, overrideScalingMode); 204 } 205 206 status_t SurfaceControl::clearLayerFrameStats() const { 207 status_t err = validate(); 208 if (err < 0) return err; 209 const sp<SurfaceComposerClient>& client(mClient); 210 return client->clearLayerFrameStats(mHandle); 211 } 212 213 status_t SurfaceControl::getLayerFrameStats(FrameStats* outStats) const { 214 status_t err = validate(); 215 if (err < 0) return err; 216 const sp<SurfaceComposerClient>& client(mClient); 217 return client->getLayerFrameStats(mHandle, outStats); 218 } 219 220 status_t SurfaceControl::validate() const 221 { 222 if (mHandle==0 || mClient==0) { 223 ALOGE("invalid handle (%p) or client (%p)", 224 mHandle.get(), mClient.get()); 225 return NO_INIT; 226 } 227 return NO_ERROR; 228 } 229 230 status_t SurfaceControl::writeSurfaceToParcel( 231 const sp<SurfaceControl>& control, Parcel* parcel) 232 { 233 sp<IGraphicBufferProducer> bp; 234 if (control != NULL) { 235 bp = control->mGraphicBufferProducer; 236 } 237 return parcel->writeStrongBinder(IInterface::asBinder(bp)); 238 } 239 240 sp<Surface> SurfaceControl::generateSurfaceLocked() const 241 { 242 // This surface is always consumed by SurfaceFlinger, so the 243 // producerControlledByApp value doesn't matter; using false. 244 mSurfaceData = new Surface(mGraphicBufferProducer, false); 245 246 return mSurfaceData; 247 } 248 249 sp<Surface> SurfaceControl::getSurface() const 250 { 251 Mutex::Autolock _l(mLock); 252 if (mSurfaceData == 0) { 253 return generateSurfaceLocked(); 254 } 255 return mSurfaceData; 256 } 257 258 sp<Surface> SurfaceControl::createSurface() const 259 { 260 Mutex::Autolock _l(mLock); 261 return generateSurfaceLocked(); 262 } 263 264 sp<IBinder> SurfaceControl::getHandle() const 265 { 266 Mutex::Autolock lock(mLock); 267 return mHandle; 268 } 269 270 // ---------------------------------------------------------------------------- 271 }; // namespace android 272
