android_view_Surface.cpp revision 7bbf8163fb83afc54b353a8def52bfb87ecce047
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 <stdio.h> 20 21#include "android_os_Parcel.h" 22#include "android_util_Binder.h" 23#include "android/graphics/GraphicsJNI.h" 24#include "android/graphics/Region.h" 25 26#include <binder/IMemory.h> 27 28#include <gui/ISurfaceComposer.h> 29#include <gui/Surface.h> 30#include <gui/SurfaceComposerClient.h> 31#include <gui/SurfaceTexture.h> 32 33#include <ui/DisplayInfo.h> 34#include <ui/Rect.h> 35#include <ui/Region.h> 36 37#include <EGL/egl.h> 38 39#include <SkCanvas.h> 40#include <SkBitmap.h> 41#include <SkRegion.h> 42#include <SkPixelRef.h> 43 44#include "jni.h" 45#include "JNIHelp.h" 46#include <android_runtime/AndroidRuntime.h> 47#include <android_runtime/android_view_Surface.h> 48#include <android_runtime/android_view_SurfaceSession.h> 49#include <android_runtime/android_graphics_SurfaceTexture.h> 50#include <utils/misc.h> 51#include <utils/Log.h> 52 53#include <ScopedUtfChars.h> 54 55 56// ---------------------------------------------------------------------------- 57 58namespace android { 59 60static const char* const OutOfResourcesException = 61 "android/view/Surface$OutOfResourcesException"; 62 63static struct { 64 jclass clazz; 65 jfieldID mNativeSurface; 66 jfieldID mNativeSurfaceControl; 67 jfieldID mGenerationId; 68 jfieldID mCanvas; 69 jfieldID mCanvasSaveCount; 70 jmethodID ctor; 71} gSurfaceClassInfo; 72 73static struct { 74 jfieldID left; 75 jfieldID top; 76 jfieldID right; 77 jfieldID bottom; 78} gRectClassInfo; 79 80static struct { 81 jfieldID mNativeCanvas; 82 jfieldID mSurfaceFormat; 83} gCanvasClassInfo; 84 85static struct { 86 jfieldID width; 87 jfieldID height; 88 jfieldID refreshRate; 89 jfieldID density; 90 jfieldID xDpi; 91 jfieldID yDpi; 92} gPhysicalDisplayInfoClassInfo; 93 94 95class ScreenshotPixelRef : public SkPixelRef { 96public: 97 ScreenshotPixelRef(SkColorTable* ctable) { 98 fCTable = ctable; 99 SkSafeRef(ctable); 100 setImmutable(); 101 } 102 103 virtual ~ScreenshotPixelRef() { 104 SkSafeUnref(fCTable); 105 } 106 107 status_t update(const sp<IBinder>& display, int width, int height, 108 int minLayer, int maxLayer, bool allLayers) { 109 status_t res = (width > 0 && height > 0) 110 ? (allLayers 111 ? mScreenshot.update(display, width, height) 112 : mScreenshot.update(display, width, height, minLayer, maxLayer)) 113 : mScreenshot.update(display); 114 if (res != NO_ERROR) { 115 return res; 116 } 117 118 return NO_ERROR; 119 } 120 121 uint32_t getWidth() const { 122 return mScreenshot.getWidth(); 123 } 124 125 uint32_t getHeight() const { 126 return mScreenshot.getHeight(); 127 } 128 129 uint32_t getStride() const { 130 return mScreenshot.getStride(); 131 } 132 133 uint32_t getFormat() const { 134 return mScreenshot.getFormat(); 135 } 136 137protected: 138 // overrides from SkPixelRef 139 virtual void* onLockPixels(SkColorTable** ct) { 140 *ct = fCTable; 141 return (void*)mScreenshot.getPixels(); 142 } 143 144 virtual void onUnlockPixels() { 145 } 146 147private: 148 ScreenshotClient mScreenshot; 149 SkColorTable* fCTable; 150 151 typedef SkPixelRef INHERITED; 152}; 153 154 155// ---------------------------------------------------------------------------- 156 157static sp<SurfaceControl> getSurfaceControl(JNIEnv* env, jobject surfaceObj) { 158 return reinterpret_cast<SurfaceControl*>( 159 env->GetIntField(surfaceObj, gSurfaceClassInfo.mNativeSurfaceControl)); 160} 161 162static void setSurfaceControl(JNIEnv* env, jobject surfaceObj, 163 const sp<SurfaceControl>& surface) { 164 SurfaceControl* const p = reinterpret_cast<SurfaceControl*>( 165 env->GetIntField(surfaceObj, gSurfaceClassInfo.mNativeSurfaceControl)); 166 if (surface.get()) { 167 surface->incStrong(surfaceObj); 168 } 169 if (p) { 170 p->decStrong(surfaceObj); 171 } 172 env->SetIntField(surfaceObj, gSurfaceClassInfo.mNativeSurfaceControl, 173 reinterpret_cast<jint>(surface.get())); 174} 175 176static sp<Surface> getSurface(JNIEnv* env, jobject surfaceObj) { 177 sp<Surface> result(android_view_Surface_getSurface(env, surfaceObj)); 178 if (result == NULL) { 179 /* 180 * if this method is called from the WindowManager's process, it means 181 * the client is is not remote, and therefore is allowed to have 182 * a Surface (data), so we create it here. 183 * If we don't have a SurfaceControl, it means we're in a different 184 * process. 185 */ 186 187 SurfaceControl* const control = reinterpret_cast<SurfaceControl*>( 188 env->GetIntField(surfaceObj, gSurfaceClassInfo.mNativeSurfaceControl)); 189 if (control) { 190 result = control->getSurface(); 191 if (result != NULL) { 192 result->incStrong(surfaceObj); 193 env->SetIntField(surfaceObj, gSurfaceClassInfo.mNativeSurface, 194 reinterpret_cast<jint>(result.get())); 195 } 196 } 197 } 198 return result; 199} 200 201sp<ANativeWindow> android_view_Surface_getNativeWindow(JNIEnv* env, jobject surfaceObj) { 202 return getSurface(env, surfaceObj); 203} 204 205bool android_view_Surface_isInstanceOf(JNIEnv* env, jobject obj) { 206 return env->IsInstanceOf(obj, gSurfaceClassInfo.clazz); 207} 208 209sp<Surface> android_view_Surface_getSurface(JNIEnv* env, jobject surfaceObj) { 210 return reinterpret_cast<Surface*>( 211 env->GetIntField(surfaceObj, gSurfaceClassInfo.mNativeSurface)); 212} 213 214static void setSurface(JNIEnv* env, jobject surfaceObj, const sp<Surface>& surface) { 215 Surface* const p = reinterpret_cast<Surface*>( 216 env->GetIntField(surfaceObj, gSurfaceClassInfo.mNativeSurface)); 217 if (surface.get()) { 218 surface->incStrong(surfaceObj); 219 } 220 if (p) { 221 p->decStrong(surfaceObj); 222 } 223 env->SetIntField(surfaceObj, gSurfaceClassInfo.mNativeSurface, 224 reinterpret_cast<jint>(surface.get())); 225 226 // This test is conservative and it would be better to compare the ISurfaces 227 if (p && p != surface.get()) { 228 jint generationId = env->GetIntField(surfaceObj, 229 gSurfaceClassInfo.mGenerationId); 230 generationId++; 231 env->SetIntField(surfaceObj, 232 gSurfaceClassInfo.mGenerationId, generationId); 233 } 234} 235 236static sp<ISurfaceTexture> getISurfaceTexture(JNIEnv* env, jobject surfaceObj) { 237 if (surfaceObj) { 238 sp<Surface> surface(getSurface(env, surfaceObj)); 239 if (surface != NULL) { 240 return surface->getSurfaceTexture(); 241 } 242 } 243 return NULL; 244} 245 246jobject android_view_Surface_createFromISurfaceTexture(JNIEnv* env, 247 const sp<ISurfaceTexture>& surfaceTexture) { 248 if (surfaceTexture == NULL) { 249 return NULL; 250 } 251 252 sp<Surface> surface(new Surface(surfaceTexture)); 253 if (surface == NULL) { 254 return NULL; 255 } 256 257 jobject surfaceObj = env->NewObject(gSurfaceClassInfo.clazz, gSurfaceClassInfo.ctor); 258 if (surfaceObj == NULL) { 259 if (env->ExceptionCheck()) { 260 ALOGE("Could not create instance of Surface from ISurfaceTexture."); 261 LOGE_EX(env); 262 env->ExceptionClear(); 263 } 264 return NULL; 265 } 266 267 setSurface(env, surfaceObj, surface); 268 return surfaceObj; 269} 270 271 272// ---------------------------------------------------------------------------- 273 274static void nativeCreate(JNIEnv* env, jobject surfaceObj, jobject sessionObj, 275 jstring nameStr, jint w, jint h, jint format, jint flags) { 276 ScopedUtfChars name(env, nameStr); 277 sp<SurfaceComposerClient> client(android_view_SurfaceSession_getClient(env, sessionObj)); 278 279 sp<SurfaceControl> surface = client->createSurface( 280 String8(name.c_str()), w, h, format, flags); 281 if (surface == NULL) { 282 jniThrowException(env, OutOfResourcesException, NULL); 283 return; 284 } 285 286 setSurfaceControl(env, surfaceObj, surface); 287} 288 289static void nativeCreateFromSurfaceTexture(JNIEnv* env, jobject surfaceObj, 290 jobject surfaceTextureObj) { 291 sp<SurfaceTexture> st(SurfaceTexture_getSurfaceTexture(env, surfaceTextureObj)); 292 if (st == NULL) { 293 jniThrowException(env, "java/lang/IllegalArgumentException", 294 "SurfaceTexture has already been released"); 295 return; 296 } 297 298 sp<ISurfaceTexture> bq = st->getBufferQueue(); 299 300 sp<Surface> surface(new Surface(bq)); 301 if (surface == NULL) { 302 jniThrowException(env, OutOfResourcesException, NULL); 303 return; 304 } 305 306 setSurface(env, surfaceObj, surface); 307} 308 309static void nativeRelease(JNIEnv* env, jobject surfaceObj) { 310 setSurfaceControl(env, surfaceObj, NULL); 311 setSurface(env, surfaceObj, NULL); 312} 313 314static void nativeDestroy(JNIEnv* env, jobject surfaceObj) { 315 sp<SurfaceControl> surfaceControl(getSurfaceControl(env, surfaceObj)); 316 if (SurfaceControl::isValid(surfaceControl)) { 317 surfaceControl->clear(); 318 } 319 setSurfaceControl(env, surfaceObj, NULL); 320 setSurface(env, surfaceObj, NULL); 321} 322 323static jboolean nativeIsValid(JNIEnv* env, jobject surfaceObj) { 324 sp<SurfaceControl> surfaceControl(getSurfaceControl(env, surfaceObj)); 325 if (surfaceControl != NULL) { 326 return SurfaceControl::isValid(surfaceControl) ? JNI_TRUE : JNI_FALSE; 327 } 328 329 sp<Surface> surface(getSurface(env, surfaceObj)); 330 return Surface::isValid(surface) ? JNI_TRUE : JNI_FALSE; 331} 332 333static jint nativeGetIdentity(JNIEnv* env, jobject surfaceObj) { 334 sp<SurfaceControl> control(getSurfaceControl(env, surfaceObj)); 335 if (control != NULL) { 336 return jint(control->getIdentity()); 337 } 338 339 sp<Surface> surface(getSurface(env, surfaceObj)); 340 if (surface != NULL) { 341 return jint(surface->getIdentity()); 342 } 343 344 return -1; 345} 346 347static jboolean nativeIsConsumerRunningBehind(JNIEnv* env, jobject surfaceObj) { 348 sp<Surface> surface(getSurface(env, surfaceObj)); 349 if (!Surface::isValid(surface)) { 350 doThrowIAE(env); 351 return JNI_FALSE; 352 } 353 354 int value = 0; 355 ANativeWindow* anw = static_cast<ANativeWindow*>(surface.get()); 356 anw->query(anw, NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND, &value); 357 return value; 358} 359 360static inline SkBitmap::Config convertPixelFormat(PixelFormat format) { 361 /* note: if PIXEL_FORMAT_RGBX_8888 means that all alpha bytes are 0xFF, then 362 we can map to SkBitmap::kARGB_8888_Config, and optionally call 363 bitmap.setIsOpaque(true) on the resulting SkBitmap (as an accelerator) 364 */ 365 switch (format) { 366 case PIXEL_FORMAT_RGBX_8888: return SkBitmap::kARGB_8888_Config; 367 case PIXEL_FORMAT_RGBA_8888: return SkBitmap::kARGB_8888_Config; 368 case PIXEL_FORMAT_RGBA_4444: return SkBitmap::kARGB_4444_Config; 369 case PIXEL_FORMAT_RGB_565: return SkBitmap::kRGB_565_Config; 370 case PIXEL_FORMAT_A_8: return SkBitmap::kA8_Config; 371 default: return SkBitmap::kNo_Config; 372 } 373} 374 375static jobject nativeLockCanvas(JNIEnv* env, jobject surfaceObj, jobject dirtyRectObj) { 376 sp<Surface> surface(getSurface(env, surfaceObj)); 377 if (!Surface::isValid(surface)) { 378 doThrowIAE(env); 379 return NULL; 380 } 381 382 // get dirty region 383 Region dirtyRegion; 384 if (dirtyRectObj) { 385 Rect dirty; 386 dirty.left = env->GetIntField(dirtyRectObj, gRectClassInfo.left); 387 dirty.top = env->GetIntField(dirtyRectObj, gRectClassInfo.top); 388 dirty.right = env->GetIntField(dirtyRectObj, gRectClassInfo.right); 389 dirty.bottom = env->GetIntField(dirtyRectObj, gRectClassInfo.bottom); 390 if (!dirty.isEmpty()) { 391 dirtyRegion.set(dirty); 392 } 393 } else { 394 dirtyRegion.set(Rect(0x3FFF, 0x3FFF)); 395 } 396 397 Surface::SurfaceInfo info; 398 status_t err = surface->lock(&info, &dirtyRegion); 399 if (err < 0) { 400 const char* const exception = (err == NO_MEMORY) ? 401 OutOfResourcesException : 402 "java/lang/IllegalArgumentException"; 403 jniThrowException(env, exception, NULL); 404 return NULL; 405 } 406 407 // Associate a SkCanvas object to this surface 408 jobject canvasObj = env->GetObjectField(surfaceObj, gSurfaceClassInfo.mCanvas); 409 env->SetIntField(canvasObj, gCanvasClassInfo.mSurfaceFormat, info.format); 410 411 SkCanvas* nativeCanvas = reinterpret_cast<SkCanvas*>( 412 env->GetIntField(canvasObj, gCanvasClassInfo.mNativeCanvas)); 413 SkBitmap bitmap; 414 ssize_t bpr = info.s * bytesPerPixel(info.format); 415 bitmap.setConfig(convertPixelFormat(info.format), info.w, info.h, bpr); 416 if (info.format == PIXEL_FORMAT_RGBX_8888) { 417 bitmap.setIsOpaque(true); 418 } 419 if (info.w > 0 && info.h > 0) { 420 bitmap.setPixels(info.bits); 421 } else { 422 // be safe with an empty bitmap. 423 bitmap.setPixels(NULL); 424 } 425 nativeCanvas->setBitmapDevice(bitmap); 426 427 SkRegion clipReg; 428 if (dirtyRegion.isRect()) { // very common case 429 const Rect b(dirtyRegion.getBounds()); 430 clipReg.setRect(b.left, b.top, b.right, b.bottom); 431 } else { 432 size_t count; 433 Rect const* r = dirtyRegion.getArray(&count); 434 while (count) { 435 clipReg.op(r->left, r->top, r->right, r->bottom, SkRegion::kUnion_Op); 436 r++, count--; 437 } 438 } 439 440 nativeCanvas->clipRegion(clipReg); 441 442 int saveCount = nativeCanvas->save(); 443 env->SetIntField(surfaceObj, gSurfaceClassInfo.mCanvasSaveCount, saveCount); 444 445 if (dirtyRectObj) { 446 const Rect& bounds(dirtyRegion.getBounds()); 447 env->SetIntField(dirtyRectObj, gRectClassInfo.left, bounds.left); 448 env->SetIntField(dirtyRectObj, gRectClassInfo.top, bounds.top); 449 env->SetIntField(dirtyRectObj, gRectClassInfo.right, bounds.right); 450 env->SetIntField(dirtyRectObj, gRectClassInfo.bottom, bounds.bottom); 451 } 452 453 return canvasObj; 454} 455 456static void nativeUnlockCanvasAndPost(JNIEnv* env, jobject surfaceObj, jobject canvasObj) { 457 jobject ownCanvasObj = env->GetObjectField(surfaceObj, gSurfaceClassInfo.mCanvas); 458 if (!env->IsSameObject(ownCanvasObj, canvasObj)) { 459 doThrowIAE(env); 460 return; 461 } 462 463 sp<Surface> surface(getSurface(env, surfaceObj)); 464 if (!Surface::isValid(surface)) { 465 return; 466 } 467 468 // detach the canvas from the surface 469 SkCanvas* nativeCanvas = reinterpret_cast<SkCanvas*>( 470 env->GetIntField(canvasObj, gCanvasClassInfo.mNativeCanvas)); 471 int saveCount = env->GetIntField(surfaceObj, gSurfaceClassInfo.mCanvasSaveCount); 472 nativeCanvas->restoreToCount(saveCount); 473 nativeCanvas->setBitmapDevice(SkBitmap()); 474 env->SetIntField(surfaceObj, gSurfaceClassInfo.mCanvasSaveCount, 0); 475 476 // unlock surface 477 status_t err = surface->unlockAndPost(); 478 if (err < 0) { 479 doThrowIAE(env); 480 } 481} 482 483static jobject nativeScreenshot(JNIEnv* env, jclass clazz, jobject displayTokenObj, 484 jint width, jint height, jint minLayer, jint maxLayer, bool allLayers) { 485 sp<IBinder> displayToken = ibinderForJavaObject(env, displayTokenObj); 486 if (displayToken == NULL) { 487 return NULL; 488 } 489 490 ScreenshotPixelRef* pixels = new ScreenshotPixelRef(NULL); 491 if (pixels->update(displayToken, width, height, 492 minLayer, maxLayer, allLayers) != NO_ERROR) { 493 delete pixels; 494 return NULL; 495 } 496 497 uint32_t w = pixels->getWidth(); 498 uint32_t h = pixels->getHeight(); 499 uint32_t s = pixels->getStride(); 500 uint32_t f = pixels->getFormat(); 501 ssize_t bpr = s * android::bytesPerPixel(f); 502 503 SkBitmap* bitmap = new SkBitmap(); 504 bitmap->setConfig(convertPixelFormat(f), w, h, bpr); 505 if (f == PIXEL_FORMAT_RGBX_8888) { 506 bitmap->setIsOpaque(true); 507 } 508 509 if (w > 0 && h > 0) { 510 bitmap->setPixelRef(pixels)->unref(); 511 bitmap->lockPixels(); 512 } else { 513 // be safe with an empty bitmap. 514 delete pixels; 515 bitmap->setPixels(NULL); 516 } 517 518 return GraphicsJNI::createBitmap(env, bitmap, false, NULL); 519} 520 521static void nativeOpenTransaction(JNIEnv* env, jclass clazz) { 522 SurfaceComposerClient::openGlobalTransaction(); 523} 524 525static void nativeCloseTransaction(JNIEnv* env, jclass clazz) { 526 SurfaceComposerClient::closeGlobalTransaction(); 527} 528 529static void nativeSetAnimationTransaction(JNIEnv* env, jclass clazz) { 530 SurfaceComposerClient::setAnimationTransaction(); 531} 532 533static void nativeSetLayer(JNIEnv* env, jobject surfaceObj, jint zorder) { 534 sp<SurfaceControl> surface(getSurfaceControl(env, surfaceObj)); 535 if (surface == NULL) return; 536 537 status_t err = surface->setLayer(zorder); 538 if (err < 0 && err != NO_INIT) { 539 doThrowIAE(env); 540 } 541} 542 543static void nativeSetPosition(JNIEnv* env, jobject surfaceObj, jfloat x, jfloat y) { 544 sp<SurfaceControl> surface(getSurfaceControl(env, surfaceObj)); 545 if (surface == NULL) return; 546 547 status_t err = surface->setPosition(x, y); 548 if (err < 0 && err != NO_INIT) { 549 doThrowIAE(env); 550 } 551} 552 553static void nativeSetSize(JNIEnv* env, jobject surfaceObj, jint w, jint h) { 554 sp<SurfaceControl> surface(getSurfaceControl(env, surfaceObj)); 555 if (surface == NULL) return; 556 557 status_t err = surface->setSize(w, h); 558 if (err < 0 && err != NO_INIT) { 559 doThrowIAE(env); 560 } 561} 562 563static void nativeSetFlags(JNIEnv* env, jobject surfaceObj, jint flags, jint mask) { 564 sp<SurfaceControl> surface(getSurfaceControl(env, surfaceObj)); 565 if (surface == NULL) return; 566 567 status_t err = surface->setFlags(flags, mask); 568 if (err < 0 && err != NO_INIT) { 569 doThrowIAE(env); 570 } 571} 572 573static void nativeSetTransparentRegionHint(JNIEnv* env, jobject surfaceObj, jobject regionObj) { 574 sp<SurfaceControl> surface(getSurfaceControl(env, surfaceObj)); 575 if (surface == NULL) return; 576 577 SkRegion* region = android_graphics_Region_getSkRegion(env, regionObj); 578 if (!region) { 579 doThrowIAE(env); 580 return; 581 } 582 583 const SkIRect& b(region->getBounds()); 584 Region reg(Rect(b.fLeft, b.fTop, b.fRight, b.fBottom)); 585 if (region->isComplex()) { 586 SkRegion::Iterator it(*region); 587 while (!it.done()) { 588 const SkIRect& r(it.rect()); 589 reg.addRectUnchecked(r.fLeft, r.fTop, r.fRight, r.fBottom); 590 it.next(); 591 } 592 } 593 594 status_t err = surface->setTransparentRegionHint(reg); 595 if (err < 0 && err != NO_INIT) { 596 doThrowIAE(env); 597 } 598} 599 600static void nativeSetAlpha(JNIEnv* env, jobject surfaceObj, jfloat alpha) { 601 sp<SurfaceControl> surface(getSurfaceControl(env, surfaceObj)); 602 if (surface == NULL) return; 603 604 status_t err = surface->setAlpha(alpha); 605 if (err < 0 && err != NO_INIT) { 606 doThrowIAE(env); 607 } 608} 609 610static void nativeSetMatrix(JNIEnv* env, jobject surfaceObj, 611 jfloat dsdx, jfloat dtdx, jfloat dsdy, jfloat dtdy) { 612 sp<SurfaceControl> surface(getSurfaceControl(env, surfaceObj)); 613 if (surface == NULL) return; 614 615 status_t err = surface->setMatrix(dsdx, dtdx, dsdy, dtdy); 616 if (err < 0 && err != NO_INIT) { 617 doThrowIAE(env); 618 } 619} 620 621static void nativeSetWindowCrop(JNIEnv* env, jobject surfaceObj, jobject cropObj) { 622 const sp<SurfaceControl>& surface(getSurfaceControl(env, surfaceObj)); 623 if (surface == NULL) return; 624 625 Rect crop; 626 if (cropObj) { 627 crop.left = env->GetIntField(cropObj, gRectClassInfo.left); 628 crop.top = env->GetIntField(cropObj, gRectClassInfo.top); 629 crop.right = env->GetIntField(cropObj, gRectClassInfo.right); 630 crop.bottom = env->GetIntField(cropObj, gRectClassInfo.bottom); 631 } else { 632 crop.left = crop.top = crop.right = crop.bottom = 0; 633 } 634 635 status_t err = surface->setCrop(crop); 636 if (err < 0 && err != NO_INIT) { 637 doThrowIAE(env); 638 } 639} 640 641static void nativeSetLayerStack(JNIEnv* env, jobject surfaceObj, jint layerStack) { 642 sp<SurfaceControl> surface(getSurfaceControl(env, surfaceObj)); 643 if (surface == NULL) return; 644 645 status_t err = surface->setLayerStack(layerStack); 646 if (err < 0 && err != NO_INIT) { 647 doThrowIAE(env); 648 } 649} 650 651static jobject nativeGetBuiltInDisplay(JNIEnv* env, jclass clazz, jint id) { 652 sp<IBinder> token(SurfaceComposerClient::getBuiltInDisplay(id)); 653 return javaObjectForIBinder(env, token); 654} 655 656static jobject nativeCreateDisplay(JNIEnv* env, jclass clazz, jstring nameObj, 657 jboolean secure) { 658 ScopedUtfChars name(env, nameObj); 659 sp<IBinder> token(SurfaceComposerClient::createDisplay( 660 String8(name.c_str()), bool(secure))); 661 return javaObjectForIBinder(env, token); 662} 663 664static void nativeSetDisplaySurface(JNIEnv* env, jclass clazz, 665 jobject tokenObj, jobject surfaceObj) { 666 sp<IBinder> token(ibinderForJavaObject(env, tokenObj)); 667 if (token == NULL) return; 668 669 sp<ISurfaceTexture> surfaceTexture(getISurfaceTexture(env, surfaceObj)); 670 SurfaceComposerClient::setDisplaySurface(token, surfaceTexture); 671} 672 673static void nativeSetDisplayLayerStack(JNIEnv* env, jclass clazz, 674 jobject tokenObj, jint layerStack) { 675 sp<IBinder> token(ibinderForJavaObject(env, tokenObj)); 676 if (token == NULL) return; 677 678 SurfaceComposerClient::setDisplayLayerStack(token, layerStack); 679} 680 681static void nativeSetDisplayProjection(JNIEnv* env, jclass clazz, 682 jobject tokenObj, jint orientation, jobject layerStackRectObj, jobject displayRectObj) { 683 sp<IBinder> token(ibinderForJavaObject(env, tokenObj)); 684 if (token == NULL) return; 685 686 Rect layerStackRect; 687 layerStackRect.left = env->GetIntField(layerStackRectObj, gRectClassInfo.left); 688 layerStackRect.top = env->GetIntField(layerStackRectObj, gRectClassInfo.top); 689 layerStackRect.right = env->GetIntField(layerStackRectObj, gRectClassInfo.right); 690 layerStackRect.bottom = env->GetIntField(layerStackRectObj, gRectClassInfo.bottom); 691 692 Rect displayRect; 693 displayRect.left = env->GetIntField(displayRectObj, gRectClassInfo.left); 694 displayRect.top = env->GetIntField(displayRectObj, gRectClassInfo.top); 695 displayRect.right = env->GetIntField(displayRectObj, gRectClassInfo.right); 696 displayRect.bottom = env->GetIntField(displayRectObj, gRectClassInfo.bottom); 697 698 SurfaceComposerClient::setDisplayProjection(token, orientation, layerStackRect, displayRect); 699} 700 701static jboolean nativeGetDisplayInfo(JNIEnv* env, jclass clazz, 702 jobject tokenObj, jobject infoObj) { 703 sp<IBinder> token(ibinderForJavaObject(env, tokenObj)); 704 if (token == NULL) return JNI_FALSE; 705 706 DisplayInfo info; 707 if (SurfaceComposerClient::getDisplayInfo(token, &info)) { 708 return JNI_FALSE; 709 } 710 711 env->SetIntField(infoObj, gPhysicalDisplayInfoClassInfo.width, info.w); 712 env->SetIntField(infoObj, gPhysicalDisplayInfoClassInfo.height, info.h); 713 env->SetFloatField(infoObj, gPhysicalDisplayInfoClassInfo.refreshRate, info.fps); 714 env->SetFloatField(infoObj, gPhysicalDisplayInfoClassInfo.density, info.density); 715 env->SetFloatField(infoObj, gPhysicalDisplayInfoClassInfo.xDpi, info.xdpi); 716 env->SetFloatField(infoObj, gPhysicalDisplayInfoClassInfo.yDpi, info.ydpi); 717 return JNI_TRUE; 718} 719 720static void nativeBlankDisplay(JNIEnv* env, jclass clazz, jobject tokenObj) { 721 sp<IBinder> token(ibinderForJavaObject(env, tokenObj)); 722 if (token == NULL) return; 723 724 ALOGD_IF_SLOW(100, "Excessive delay in blankDisplay() while turning screen off"); 725 SurfaceComposerClient::blankDisplay(token); 726} 727 728static void nativeUnblankDisplay(JNIEnv* env, jclass clazz, jobject tokenObj) { 729 sp<IBinder> token(ibinderForJavaObject(env, tokenObj)); 730 if (token == NULL) return; 731 732 ALOGD_IF_SLOW(100, "Excessive delay in unblankDisplay() while turning screen on"); 733 SurfaceComposerClient::unblankDisplay(token); 734} 735 736// ---------------------------------------------------------------------------- 737 738static void nativeCopyFrom(JNIEnv* env, jobject surfaceObj, jobject otherObj) { 739 /* 740 * This is used by the WindowManagerService just after constructing 741 * a Surface and is necessary for returning the Surface reference to 742 * the caller. At this point, we should only have a SurfaceControl. 743 */ 744 745 sp<SurfaceControl> surface(getSurfaceControl(env, surfaceObj)); 746 sp<SurfaceControl> other(getSurfaceControl(env, otherObj)); 747 if (!SurfaceControl::isSameSurface(surface, other)) { 748 // we reassign the surface only if it's a different one 749 // otherwise we would loose our client-side state. 750 setSurfaceControl(env, surfaceObj, other); 751 } 752} 753 754static void nativeTransferFrom(JNIEnv* env, jobject surfaceObj, jobject otherObj) { 755 sp<SurfaceControl> control(getSurfaceControl(env, otherObj)); 756 sp<Surface> surface(android_view_Surface_getSurface(env, otherObj)); 757 setSurfaceControl(env, surfaceObj, control); 758 setSurface(env, surfaceObj, surface); 759 setSurfaceControl(env, otherObj, NULL); 760 setSurface(env, otherObj, NULL); 761} 762 763static void nativeReadFromParcel(JNIEnv* env, jobject surfaceObj, jobject parcelObj) { 764 Parcel* parcel = parcelForJavaObject(env, parcelObj); 765 if (parcel == NULL) { 766 doThrowNPE(env); 767 return; 768 } 769 770 sp<Surface> surface(Surface::readFromParcel(*parcel)); 771 setSurfaceControl(env, surfaceObj, NULL); 772 setSurface(env, surfaceObj, surface); 773} 774 775static void nativeWriteToParcel(JNIEnv* env, jobject surfaceObj, jobject parcelObj) { 776 Parcel* parcel = parcelForJavaObject(env, parcelObj); 777 if (parcel == NULL) { 778 doThrowNPE(env); 779 return; 780 } 781 782 // The Java instance may have a SurfaceControl (in the case of the 783 // WindowManager or a system app). In that case, we defer to the 784 // SurfaceControl to send its ISurface. Otherwise, if the Surface is 785 // available we let it parcel itself. Finally, if the Surface is also 786 // NULL we fall back to using the SurfaceControl path which sends an 787 // empty surface; this matches legacy behavior. 788 sp<SurfaceControl> control(getSurfaceControl(env, surfaceObj)); 789 if (control != NULL) { 790 SurfaceControl::writeSurfaceToParcel(control, parcel); 791 } else { 792 sp<Surface> surface(android_view_Surface_getSurface(env, surfaceObj)); 793 if (surface != NULL) { 794 Surface::writeToParcel(surface, parcel); 795 } else { 796 SurfaceControl::writeSurfaceToParcel(NULL, parcel); 797 } 798 } 799} 800 801// ---------------------------------------------------------------------------- 802 803static JNINativeMethod gSurfaceMethods[] = { 804 {"nativeCreate", "(Landroid/view/SurfaceSession;Ljava/lang/String;IIII)V", 805 (void*)nativeCreate }, 806 {"nativeCreateFromSurfaceTexture", "(Landroid/graphics/SurfaceTexture;)V", 807 (void*)nativeCreateFromSurfaceTexture }, 808 {"nativeRelease", "()V", 809 (void*)nativeRelease }, 810 {"nativeDestroy", "()V", 811 (void*)nativeDestroy }, 812 {"nativeIsValid", "()Z", 813 (void*)nativeIsValid }, 814 {"nativeGetIdentity", "()I", 815 (void*)nativeGetIdentity }, 816 {"nativeIsConsumerRunningBehind", "()Z", 817 (void*)nativeIsConsumerRunningBehind }, 818 {"nativeLockCanvas", "(Landroid/graphics/Rect;)Landroid/graphics/Canvas;", 819 (void*)nativeLockCanvas }, 820 {"nativeUnlockCanvasAndPost", "(Landroid/graphics/Canvas;)V", 821 (void*)nativeUnlockCanvasAndPost }, 822 {"nativeScreenshot", "(Landroid/os/IBinder;IIIIZ)Landroid/graphics/Bitmap;", 823 (void*)nativeScreenshot }, 824 {"nativeOpenTransaction", "()V", 825 (void*)nativeOpenTransaction }, 826 {"nativeCloseTransaction", "()V", 827 (void*)nativeCloseTransaction }, 828 {"nativeSetAnimationTransaction", "()V", 829 (void*)nativeSetAnimationTransaction }, 830 {"nativeSetLayer", "(I)V", 831 (void*)nativeSetLayer }, 832 {"nativeSetPosition", "(FF)V", 833 (void*)nativeSetPosition }, 834 {"nativeSetSize", "(II)V", 835 (void*)nativeSetSize }, 836 {"nativeSetTransparentRegionHint", "(Landroid/graphics/Region;)V", 837 (void*)nativeSetTransparentRegionHint }, 838 {"nativeSetAlpha", "(F)V", 839 (void*)nativeSetAlpha }, 840 {"nativeSetMatrix", "(FFFF)V", 841 (void*)nativeSetMatrix }, 842 {"nativeSetFlags", "(II)V", 843 (void*)nativeSetFlags }, 844 {"nativeSetWindowCrop", "(Landroid/graphics/Rect;)V", 845 (void*)nativeSetWindowCrop }, 846 {"nativeSetLayerStack", "(I)V", 847 (void*)nativeSetLayerStack }, 848 {"nativeGetBuiltInDisplay", "(I)Landroid/os/IBinder;", 849 (void*)nativeGetBuiltInDisplay }, 850 {"nativeCreateDisplay", "(Ljava/lang/String;Z)Landroid/os/IBinder;", 851 (void*)nativeCreateDisplay }, 852 {"nativeSetDisplaySurface", "(Landroid/os/IBinder;Landroid/view/Surface;)V", 853 (void*)nativeSetDisplaySurface }, 854 {"nativeSetDisplayLayerStack", "(Landroid/os/IBinder;I)V", 855 (void*)nativeSetDisplayLayerStack }, 856 {"nativeSetDisplayProjection", "(Landroid/os/IBinder;ILandroid/graphics/Rect;Landroid/graphics/Rect;)V", 857 (void*)nativeSetDisplayProjection }, 858 {"nativeGetDisplayInfo", "(Landroid/os/IBinder;Landroid/view/Surface$PhysicalDisplayInfo;)Z", 859 (void*)nativeGetDisplayInfo }, 860 {"nativeBlankDisplay", "(Landroid/os/IBinder;)V", 861 (void*)nativeBlankDisplay }, 862 {"nativeUnblankDisplay", "(Landroid/os/IBinder;)V", 863 (void*)nativeUnblankDisplay }, 864 {"nativeCopyFrom", "(Landroid/view/Surface;)V", 865 (void*)nativeCopyFrom }, 866 {"nativeTransferFrom", "(Landroid/view/Surface;)V", 867 (void*)nativeTransferFrom }, 868 {"nativeReadFromParcel", "(Landroid/os/Parcel;)V", 869 (void*)nativeReadFromParcel }, 870 {"nativeWriteToParcel", "(Landroid/os/Parcel;)V", 871 (void*)nativeWriteToParcel }, 872}; 873 874int register_android_view_Surface(JNIEnv* env) 875{ 876 int err = AndroidRuntime::registerNativeMethods(env, "android/view/Surface", 877 gSurfaceMethods, NELEM(gSurfaceMethods)); 878 879 jclass clazz = env->FindClass("android/view/Surface"); 880 gSurfaceClassInfo.clazz = jclass(env->NewGlobalRef(clazz)); 881 gSurfaceClassInfo.mNativeSurface = 882 env->GetFieldID(gSurfaceClassInfo.clazz, ANDROID_VIEW_SURFACE_JNI_ID, "I"); 883 gSurfaceClassInfo.mNativeSurfaceControl = 884 env->GetFieldID(gSurfaceClassInfo.clazz, "mNativeSurfaceControl", "I"); 885 gSurfaceClassInfo.mGenerationId = 886 env->GetFieldID(gSurfaceClassInfo.clazz, "mGenerationId", "I"); 887 gSurfaceClassInfo.mCanvas = 888 env->GetFieldID(gSurfaceClassInfo.clazz, "mCanvas", "Landroid/graphics/Canvas;"); 889 gSurfaceClassInfo.mCanvasSaveCount = 890 env->GetFieldID(gSurfaceClassInfo.clazz, "mCanvasSaveCount", "I"); 891 gSurfaceClassInfo.ctor = env->GetMethodID(gSurfaceClassInfo.clazz, "<init>", "()V"); 892 893 clazz = env->FindClass("android/graphics/Canvas"); 894 gCanvasClassInfo.mNativeCanvas = env->GetFieldID(clazz, "mNativeCanvas", "I"); 895 gCanvasClassInfo.mSurfaceFormat = env->GetFieldID(clazz, "mSurfaceFormat", "I"); 896 897 clazz = env->FindClass("android/graphics/Rect"); 898 gRectClassInfo.left = env->GetFieldID(clazz, "left", "I"); 899 gRectClassInfo.top = env->GetFieldID(clazz, "top", "I"); 900 gRectClassInfo.right = env->GetFieldID(clazz, "right", "I"); 901 gRectClassInfo.bottom = env->GetFieldID(clazz, "bottom", "I"); 902 903 clazz = env->FindClass("android/view/Surface$PhysicalDisplayInfo"); 904 gPhysicalDisplayInfoClassInfo.width = env->GetFieldID(clazz, "width", "I"); 905 gPhysicalDisplayInfoClassInfo.height = env->GetFieldID(clazz, "height", "I"); 906 gPhysicalDisplayInfoClassInfo.refreshRate = env->GetFieldID(clazz, "refreshRate", "F"); 907 gPhysicalDisplayInfoClassInfo.density = env->GetFieldID(clazz, "density", "F"); 908 gPhysicalDisplayInfoClassInfo.xDpi = env->GetFieldID(clazz, "xDpi", "F"); 909 gPhysicalDisplayInfoClassInfo.yDpi = env->GetFieldID(clazz, "yDpi", "F"); 910 return err; 911} 912 913}; 914