Surface.cpp revision b0e76f456afaada43ddb0968bb37145219f90cd3
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 43namespace android { 44 45// ============================================================================ 46// SurfaceControl 47// ============================================================================ 48 49SurfaceControl::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 58SurfaceControl::~SurfaceControl() 59{ 60 destroy(); 61} 62 63void 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 76void 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 87bool 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 95status_t SurfaceControl::setLayer(int32_t layer) { 96 status_t err = validate(); 97 if (err < 0) return err; 98 const sp<SurfaceComposerClient>& client(mClient); 99 return client->setLayer(mToken, layer); 100} 101status_t SurfaceControl::setPosition(int32_t x, int32_t y) { 102 status_t err = validate(); 103 if (err < 0) return err; 104 const sp<SurfaceComposerClient>& client(mClient); 105 return client->setPosition(mToken, x, y); 106} 107status_t SurfaceControl::setSize(uint32_t w, uint32_t h) { 108 status_t err = validate(); 109 if (err < 0) return err; 110 const sp<SurfaceComposerClient>& client(mClient); 111 return client->setSize(mToken, w, h); 112} 113status_t SurfaceControl::hide() { 114 status_t err = validate(); 115 if (err < 0) return err; 116 const sp<SurfaceComposerClient>& client(mClient); 117 return client->hide(mToken); 118} 119status_t SurfaceControl::show(int32_t layer) { 120 status_t err = validate(); 121 if (err < 0) return err; 122 const sp<SurfaceComposerClient>& client(mClient); 123 return client->show(mToken, layer); 124} 125status_t SurfaceControl::freeze() { 126 status_t err = validate(); 127 if (err < 0) return err; 128 const sp<SurfaceComposerClient>& client(mClient); 129 return client->freeze(mToken); 130} 131status_t SurfaceControl::unfreeze() { 132 status_t err = validate(); 133 if (err < 0) return err; 134 const sp<SurfaceComposerClient>& client(mClient); 135 return client->unfreeze(mToken); 136} 137status_t SurfaceControl::setFlags(uint32_t flags, uint32_t mask) { 138 status_t err = validate(); 139 if (err < 0) return err; 140 const sp<SurfaceComposerClient>& client(mClient); 141 return client->setFlags(mToken, flags, mask); 142} 143status_t SurfaceControl::setTransparentRegionHint(const Region& transparent) { 144 status_t err = validate(); 145 if (err < 0) return err; 146 const sp<SurfaceComposerClient>& client(mClient); 147 return client->setTransparentRegionHint(mToken, transparent); 148} 149status_t SurfaceControl::setAlpha(float alpha) { 150 status_t err = validate(); 151 if (err < 0) return err; 152 const sp<SurfaceComposerClient>& client(mClient); 153 return client->setAlpha(mToken, alpha); 154} 155status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dsdy, float dtdy) { 156 status_t err = validate(); 157 if (err < 0) return err; 158 const sp<SurfaceComposerClient>& client(mClient); 159 return client->setMatrix(mToken, dsdx, dtdx, dsdy, dtdy); 160} 161status_t SurfaceControl::setFreezeTint(uint32_t tint) { 162 status_t err = validate(); 163 if (err < 0) return err; 164 const sp<SurfaceComposerClient>& client(mClient); 165 return client->setFreezeTint(mToken, tint); 166} 167 168status_t SurfaceControl::validate() const 169{ 170 if (mToken<0 || mClient==0) { 171 ALOGE("invalid token (%d, identity=%u) or client (%p)", 172 mToken, mIdentity, mClient.get()); 173 return NO_INIT; 174 } 175 return NO_ERROR; 176} 177 178status_t SurfaceControl::writeSurfaceToParcel( 179 const sp<SurfaceControl>& control, Parcel* parcel) 180{ 181 sp<ISurface> sur; 182 uint32_t identity = 0; 183 if (SurfaceControl::isValid(control)) { 184 sur = control->mSurface; 185 identity = control->mIdentity; 186 } 187 parcel->writeStrongBinder(sur!=0 ? sur->asBinder() : NULL); 188 parcel->writeStrongBinder(NULL); // NULL ISurfaceTexture in this case. 189 parcel->writeInt32(identity); 190 return NO_ERROR; 191} 192 193sp<Surface> SurfaceControl::getSurface() const 194{ 195 Mutex::Autolock _l(mLock); 196 if (mSurfaceData == 0) { 197 sp<SurfaceControl> surface_control(const_cast<SurfaceControl*>(this)); 198 mSurfaceData = new Surface(surface_control); 199 } 200 return mSurfaceData; 201} 202 203// ============================================================================ 204// Surface 205// ============================================================================ 206 207// --------------------------------------------------------------------------- 208 209Surface::Surface(const sp<SurfaceControl>& surface) 210 : SurfaceTextureClient(), 211 mSurface(surface->mSurface), 212 mIdentity(surface->mIdentity) 213{ 214 sp<ISurfaceTexture> st; 215 if (mSurface != NULL) { 216 st = mSurface->getSurfaceTexture(); 217 } 218 init(st); 219} 220 221Surface::Surface(const Parcel& parcel, const sp<IBinder>& ref) 222 : SurfaceTextureClient() 223{ 224 mSurface = interface_cast<ISurface>(ref); 225 sp<IBinder> st_binder(parcel.readStrongBinder()); 226 sp<ISurfaceTexture> st; 227 if (st_binder != NULL) { 228 st = interface_cast<ISurfaceTexture>(st_binder); 229 } else if (mSurface != NULL) { 230 st = mSurface->getSurfaceTexture(); 231 } 232 233 mIdentity = parcel.readInt32(); 234 init(st); 235} 236 237Surface::Surface(const sp<ISurfaceTexture>& st) 238 : SurfaceTextureClient(), 239 mSurface(NULL), 240 mIdentity(0) 241{ 242 init(st); 243} 244 245status_t Surface::writeToParcel( 246 const sp<Surface>& surface, Parcel* parcel) 247{ 248 sp<ISurface> sur; 249 sp<ISurfaceTexture> st; 250 uint32_t identity = 0; 251 if (Surface::isValid(surface)) { 252 sur = surface->mSurface; 253 st = surface->getISurfaceTexture(); 254 identity = surface->mIdentity; 255 } else if (surface != 0 && 256 (surface->mSurface != NULL || 257 surface->getISurfaceTexture() != NULL)) { 258 ALOGE("Parceling invalid surface with non-NULL ISurface/ISurfaceTexture as NULL: " 259 "mSurface = %p, surfaceTexture = %p, mIdentity = %d, ", 260 surface->mSurface.get(), surface->getISurfaceTexture().get(), 261 surface->mIdentity); 262 } 263 264 parcel->writeStrongBinder(sur != NULL ? sur->asBinder() : NULL); 265 parcel->writeStrongBinder(st != NULL ? st->asBinder() : NULL); 266 parcel->writeInt32(identity); 267 return NO_ERROR; 268 269} 270 271Mutex Surface::sCachedSurfacesLock; 272DefaultKeyedVector<wp<IBinder>, wp<Surface> > Surface::sCachedSurfaces; 273 274sp<Surface> Surface::readFromParcel(const Parcel& data) { 275 Mutex::Autolock _l(sCachedSurfacesLock); 276 sp<IBinder> binder(data.readStrongBinder()); 277 sp<Surface> surface = sCachedSurfaces.valueFor(binder).promote(); 278 if (surface == 0) { 279 surface = new Surface(data, binder); 280 sCachedSurfaces.add(binder, surface); 281 } else { 282 // The Surface was found in the cache, but we still should clear any 283 // remaining data from the parcel. 284 data.readStrongBinder(); // ISurfaceTexture 285 data.readInt32(); // identity 286 } 287 if (surface->mSurface == NULL && surface->getISurfaceTexture() == NULL) { 288 surface = 0; 289 } 290 cleanCachedSurfacesLocked(); 291 return surface; 292} 293 294// Remove the stale entries from the surface cache. This should only be called 295// with sCachedSurfacesLock held. 296void Surface::cleanCachedSurfacesLocked() { 297 for (int i = sCachedSurfaces.size()-1; i >= 0; --i) { 298 wp<Surface> s(sCachedSurfaces.valueAt(i)); 299 if (s == 0 || s.promote() == 0) { 300 sCachedSurfaces.removeItemsAt(i); 301 } 302 } 303} 304 305void Surface::init(const sp<ISurfaceTexture>& surfaceTexture) 306{ 307 if (mSurface != NULL || surfaceTexture != NULL) { 308 ALOGE_IF(surfaceTexture==0, "got a NULL ISurfaceTexture from ISurface"); 309 if (surfaceTexture != NULL) { 310 setISurfaceTexture(surfaceTexture); 311 setUsage(GraphicBuffer::USAGE_HW_RENDER); 312 } 313 314 DisplayInfo dinfo; 315 SurfaceComposerClient::getDisplayInfo(0, &dinfo); 316 const_cast<float&>(ANativeWindow::xdpi) = dinfo.xdpi; 317 const_cast<float&>(ANativeWindow::ydpi) = dinfo.ydpi; 318 const_cast<uint32_t&>(ANativeWindow::flags) = 0; 319 } 320} 321 322Surface::~Surface() 323{ 324 // clear all references and trigger an IPC now, to make sure things 325 // happen without delay, since these resources are quite heavy. 326 mSurface.clear(); 327 IPCThreadState::self()->flushCommands(); 328} 329 330bool Surface::isValid() { 331 return getISurfaceTexture() != NULL; 332} 333 334sp<ISurfaceTexture> Surface::getSurfaceTexture() { 335 return getISurfaceTexture(); 336} 337 338sp<IBinder> Surface::asBinder() const { 339 return mSurface!=0 ? mSurface->asBinder() : 0; 340} 341 342// ---------------------------------------------------------------------------- 343 344int Surface::query(int what, int* value) const { 345 switch (what) { 346 case NATIVE_WINDOW_CONCRETE_TYPE: 347 *value = NATIVE_WINDOW_SURFACE; 348 return NO_ERROR; 349 } 350 return SurfaceTextureClient::query(what, value); 351} 352 353// ---------------------------------------------------------------------------- 354 355status_t Surface::lock(SurfaceInfo* other, Region* inOutDirtyRegion) { 356 ANativeWindow_Buffer outBuffer; 357 358 ARect temp; 359 ARect* inOutDirtyBounds = NULL; 360 if (inOutDirtyRegion) { 361 temp = inOutDirtyRegion->getBounds(); 362 inOutDirtyBounds = &temp; 363 } 364 365 status_t err = SurfaceTextureClient::lock(&outBuffer, inOutDirtyBounds); 366 367 if (err == NO_ERROR) { 368 other->w = uint32_t(outBuffer.width); 369 other->h = uint32_t(outBuffer.height); 370 other->s = uint32_t(outBuffer.stride); 371 other->usage = GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN; 372 other->format = uint32_t(outBuffer.format); 373 other->bits = outBuffer.bits; 374 } 375 376 if (inOutDirtyRegion) { 377 inOutDirtyRegion->set( static_cast<Rect const&>(temp) ); 378 } 379 380 return err; 381} 382 383status_t Surface::unlockAndPost() { 384 return SurfaceTextureClient::unlockAndPost(); 385} 386 387// ---------------------------------------------------------------------------- 388}; // namespace android 389