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 "Surface" 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/CallStack.h> 27 #include <utils/Errors.h> 28 #include <utils/Log.h> 29 #include <utils/threads.h> 30 31 #include <binder/IPCThreadState.h> 32 33 #include <ui/DisplayInfo.h> 34 #include <ui/GraphicBuffer.h> 35 #include <ui/Rect.h> 36 37 #include <gui/ISurface.h> 38 #include <gui/ISurfaceComposer.h> 39 #include <gui/Surface.h> 40 #include <gui/SurfaceComposerClient.h> 41 #include <gui/SurfaceTextureClient.h> 42 43 namespace android { 44 45 // ============================================================================ 46 // SurfaceControl 47 // ============================================================================ 48 49 SurfaceControl::SurfaceControl( 50 const sp<SurfaceComposerClient>& client, 51 const sp<ISurface>& surface, 52 const ISurfaceComposerClient::surface_data_t& data) 53 : mClient(client), mSurface(surface), 54 mToken(data.token), mIdentity(data.identity) 55 { 56 } 57 58 SurfaceControl::~SurfaceControl() 59 { 60 destroy(); 61 } 62 63 void SurfaceControl::destroy() 64 { 65 if (isValid()) { 66 mClient->destroySurface(mToken); 67 } 68 69 // clear all references and trigger an IPC now, to make sure things 70 // happen without delay, since these resources are quite heavy. 71 mClient.clear(); 72 mSurface.clear(); 73 IPCThreadState::self()->flushCommands(); 74 } 75 76 void SurfaceControl::clear() 77 { 78 // here, the window manager tells us explicitly that we should destroy 79 // the surface's resource. Soon after this call, it will also release 80 // its last reference (which will call the dtor); however, it is possible 81 // that a client living in the same process still holds references which 82 // would delay the call to the dtor -- that is why we need this explicit 83 // "clear()" call. 84 destroy(); 85 } 86 87 bool SurfaceControl::isSameSurface( 88 const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs) 89 { 90 if (lhs == 0 || rhs == 0) 91 return false; 92 return lhs->mSurface->asBinder() == rhs->mSurface->asBinder(); 93 } 94 95 status_t SurfaceControl::setLayerStack(int32_t layerStack) { 96 status_t err = validate(); 97 if (err < 0) return err; 98 const sp<SurfaceComposerClient>& client(mClient); 99 return client->setLayerStack(mToken, layerStack); 100 } 101 status_t SurfaceControl::setLayer(int32_t layer) { 102 status_t err = validate(); 103 if (err < 0) return err; 104 const sp<SurfaceComposerClient>& client(mClient); 105 return client->setLayer(mToken, layer); 106 } 107 status_t SurfaceControl::setPosition(int32_t x, int32_t y) { 108 status_t err = validate(); 109 if (err < 0) return err; 110 const sp<SurfaceComposerClient>& client(mClient); 111 return client->setPosition(mToken, x, y); 112 } 113 status_t SurfaceControl::setSize(uint32_t w, uint32_t h) { 114 status_t err = validate(); 115 if (err < 0) return err; 116 const sp<SurfaceComposerClient>& client(mClient); 117 return client->setSize(mToken, w, h); 118 } 119 status_t SurfaceControl::hide() { 120 status_t err = validate(); 121 if (err < 0) return err; 122 const sp<SurfaceComposerClient>& client(mClient); 123 return client->hide(mToken); 124 } 125 status_t SurfaceControl::show() { 126 status_t err = validate(); 127 if (err < 0) return err; 128 const sp<SurfaceComposerClient>& client(mClient); 129 return client->show(mToken); 130 } 131 status_t SurfaceControl::setFlags(uint32_t flags, uint32_t mask) { 132 status_t err = validate(); 133 if (err < 0) return err; 134 const sp<SurfaceComposerClient>& client(mClient); 135 return client->setFlags(mToken, flags, mask); 136 } 137 status_t SurfaceControl::setTransparentRegionHint(const Region& transparent) { 138 status_t err = validate(); 139 if (err < 0) return err; 140 const sp<SurfaceComposerClient>& client(mClient); 141 return client->setTransparentRegionHint(mToken, transparent); 142 } 143 status_t SurfaceControl::setAlpha(float alpha) { 144 status_t err = validate(); 145 if (err < 0) return err; 146 const sp<SurfaceComposerClient>& client(mClient); 147 return client->setAlpha(mToken, alpha); 148 } 149 status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dsdy, float dtdy) { 150 status_t err = validate(); 151 if (err < 0) return err; 152 const sp<SurfaceComposerClient>& client(mClient); 153 return client->setMatrix(mToken, dsdx, dtdx, dsdy, dtdy); 154 } 155 status_t SurfaceControl::setCrop(const Rect& crop) { 156 status_t err = validate(); 157 if (err < 0) return err; 158 const sp<SurfaceComposerClient>& client(mClient); 159 return client->setCrop(mToken, crop); 160 } 161 162 status_t SurfaceControl::validate() const 163 { 164 if (mToken<0 || mClient==0) { 165 ALOGE("invalid token (%d, identity=%u) or client (%p)", 166 mToken, mIdentity, mClient.get()); 167 return NO_INIT; 168 } 169 return NO_ERROR; 170 } 171 172 status_t SurfaceControl::writeSurfaceToParcel( 173 const sp<SurfaceControl>& control, Parcel* parcel) 174 { 175 sp<ISurface> sur; 176 uint32_t identity = 0; 177 if (SurfaceControl::isValid(control)) { 178 sur = control->mSurface; 179 identity = control->mIdentity; 180 } 181 parcel->writeStrongBinder(sur!=0 ? sur->asBinder() : NULL); 182 parcel->writeStrongBinder(NULL); // NULL ISurfaceTexture in this case. 183 parcel->writeInt32(identity); 184 return NO_ERROR; 185 } 186 187 sp<Surface> SurfaceControl::getSurface() const 188 { 189 Mutex::Autolock _l(mLock); 190 if (mSurfaceData == 0) { 191 sp<SurfaceControl> surface_control(const_cast<SurfaceControl*>(this)); 192 mSurfaceData = new Surface(surface_control); 193 } 194 return mSurfaceData; 195 } 196 197 // ============================================================================ 198 // Surface 199 // ============================================================================ 200 201 // --------------------------------------------------------------------------- 202 203 Surface::Surface(const sp<SurfaceControl>& surface) 204 : SurfaceTextureClient(), 205 mSurface(surface->mSurface), 206 mIdentity(surface->mIdentity) 207 { 208 sp<ISurfaceTexture> st; 209 if (mSurface != NULL) { 210 st = mSurface->getSurfaceTexture(); 211 } 212 init(st); 213 } 214 215 Surface::Surface(const Parcel& parcel, const sp<IBinder>& ref) 216 : SurfaceTextureClient() 217 { 218 mSurface = interface_cast<ISurface>(ref); 219 sp<IBinder> st_binder(parcel.readStrongBinder()); 220 sp<ISurfaceTexture> st; 221 if (st_binder != NULL) { 222 st = interface_cast<ISurfaceTexture>(st_binder); 223 } else if (mSurface != NULL) { 224 st = mSurface->getSurfaceTexture(); 225 } 226 227 mIdentity = parcel.readInt32(); 228 init(st); 229 } 230 231 Surface::Surface(const sp<ISurfaceTexture>& st) 232 : SurfaceTextureClient(), 233 mSurface(NULL), 234 mIdentity(0) 235 { 236 init(st); 237 } 238 239 status_t Surface::writeToParcel( 240 const sp<Surface>& surface, Parcel* parcel) 241 { 242 sp<ISurface> sur; 243 sp<ISurfaceTexture> st; 244 uint32_t identity = 0; 245 if (Surface::isValid(surface)) { 246 sur = surface->mSurface; 247 st = surface->getISurfaceTexture(); 248 identity = surface->mIdentity; 249 } else if (surface != 0 && 250 (surface->mSurface != NULL || 251 surface->getISurfaceTexture() != NULL)) { 252 ALOGE("Parceling invalid surface with non-NULL ISurface/ISurfaceTexture as NULL: " 253 "mSurface = %p, surfaceTexture = %p, mIdentity = %d, ", 254 surface->mSurface.get(), surface->getISurfaceTexture().get(), 255 surface->mIdentity); 256 } 257 258 parcel->writeStrongBinder(sur != NULL ? sur->asBinder() : NULL); 259 parcel->writeStrongBinder(st != NULL ? st->asBinder() : NULL); 260 parcel->writeInt32(identity); 261 return NO_ERROR; 262 263 } 264 265 Mutex Surface::sCachedSurfacesLock; 266 DefaultKeyedVector<wp<IBinder>, wp<Surface> > Surface::sCachedSurfaces; 267 268 sp<Surface> Surface::readFromParcel(const Parcel& data) { 269 Mutex::Autolock _l(sCachedSurfacesLock); 270 sp<IBinder> binder(data.readStrongBinder()); 271 sp<Surface> surface = sCachedSurfaces.valueFor(binder).promote(); 272 if (surface == 0) { 273 surface = new Surface(data, binder); 274 sCachedSurfaces.add(binder, surface); 275 } else { 276 // The Surface was found in the cache, but we still should clear any 277 // remaining data from the parcel. 278 data.readStrongBinder(); // ISurfaceTexture 279 data.readInt32(); // identity 280 } 281 if (surface->mSurface == NULL && surface->getISurfaceTexture() == NULL) { 282 surface = 0; 283 } 284 cleanCachedSurfacesLocked(); 285 return surface; 286 } 287 288 // Remove the stale entries from the surface cache. This should only be called 289 // with sCachedSurfacesLock held. 290 void Surface::cleanCachedSurfacesLocked() { 291 for (int i = sCachedSurfaces.size()-1; i >= 0; --i) { 292 wp<Surface> s(sCachedSurfaces.valueAt(i)); 293 if (s == 0 || s.promote() == 0) { 294 sCachedSurfaces.removeItemsAt(i); 295 } 296 } 297 } 298 299 void Surface::init(const sp<ISurfaceTexture>& surfaceTexture) 300 { 301 if (mSurface != NULL || surfaceTexture != NULL) { 302 ALOGE_IF(surfaceTexture==0, "got a NULL ISurfaceTexture from ISurface"); 303 if (surfaceTexture != NULL) { 304 setISurfaceTexture(surfaceTexture); 305 setUsage(GraphicBuffer::USAGE_HW_RENDER); 306 } 307 308 // TODO: the display metrics should come from the display manager 309 DisplayInfo dinfo; 310 sp<IBinder> display = SurfaceComposerClient::getBuiltInDisplay( 311 ISurfaceComposer::eDisplayIdMain); 312 SurfaceComposerClient::getDisplayInfo(display, &dinfo); 313 const_cast<float&>(ANativeWindow::xdpi) = dinfo.xdpi; 314 const_cast<float&>(ANativeWindow::ydpi) = dinfo.ydpi; 315 const_cast<uint32_t&>(ANativeWindow::flags) = 0; 316 } 317 } 318 319 Surface::~Surface() 320 { 321 // clear all references and trigger an IPC now, to make sure things 322 // happen without delay, since these resources are quite heavy. 323 mSurface.clear(); 324 IPCThreadState::self()->flushCommands(); 325 } 326 327 bool Surface::isValid() { 328 return getISurfaceTexture() != NULL; 329 } 330 331 sp<ISurfaceTexture> Surface::getSurfaceTexture() { 332 return getISurfaceTexture(); 333 } 334 335 sp<IBinder> Surface::asBinder() const { 336 return mSurface!=0 ? mSurface->asBinder() : 0; 337 } 338 339 // ---------------------------------------------------------------------------- 340 341 int Surface::query(int what, int* value) const { 342 switch (what) { 343 case NATIVE_WINDOW_CONCRETE_TYPE: 344 *value = NATIVE_WINDOW_SURFACE; 345 return NO_ERROR; 346 } 347 return SurfaceTextureClient::query(what, value); 348 } 349 350 // ---------------------------------------------------------------------------- 351 352 status_t Surface::lock(SurfaceInfo* other, Region* inOutDirtyRegion) { 353 ANativeWindow_Buffer outBuffer; 354 355 ARect temp; 356 ARect* inOutDirtyBounds = NULL; 357 if (inOutDirtyRegion) { 358 temp = inOutDirtyRegion->getBounds(); 359 inOutDirtyBounds = &temp; 360 } 361 362 status_t err = SurfaceTextureClient::lock(&outBuffer, inOutDirtyBounds); 363 364 if (err == NO_ERROR) { 365 other->w = uint32_t(outBuffer.width); 366 other->h = uint32_t(outBuffer.height); 367 other->s = uint32_t(outBuffer.stride); 368 other->usage = GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN; 369 other->format = uint32_t(outBuffer.format); 370 other->bits = outBuffer.bits; 371 } 372 373 if (inOutDirtyRegion) { 374 inOutDirtyRegion->set( static_cast<Rect const&>(temp) ); 375 } 376 377 return err; 378 } 379 380 status_t Surface::unlockAndPost() { 381 return SurfaceTextureClient::unlockAndPost(); 382 } 383 384 // ---------------------------------------------------------------------------- 385 }; // namespace android 386