android_view_Surface.cpp revision 2e76c992bfa955cb637417005941e3e93810a99d
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_util_Binder.h" 22#include "android/graphics/GraphicsJNI.h" 23 24#include <binder/IMemory.h> 25 26#include <gui/Surface.h> 27#include <gui/SurfaceComposerClient.h> 28#include <gui/SurfaceTexture.h> 29 30#include <ui/Rect.h> 31#include <ui/Region.h> 32 33#include <EGL/egl.h> 34 35#include <SkCanvas.h> 36#include <SkBitmap.h> 37#include <SkRegion.h> 38#include <SkPixelRef.h> 39 40#include "jni.h" 41#include "JNIHelp.h" 42#include <android_runtime/AndroidRuntime.h> 43#include <android_runtime/android_view_Surface.h> 44#include <android_runtime/android_graphics_SurfaceTexture.h> 45#include <utils/misc.h> 46 47 48// ---------------------------------------------------------------------------- 49 50namespace android { 51 52enum { 53 // should match Parcelable.java 54 PARCELABLE_WRITE_RETURN_VALUE = 0x0001 55}; 56 57// ---------------------------------------------------------------------------- 58 59static const char* const OutOfResourcesException = 60 "android/view/Surface$OutOfResourcesException"; 61 62const char* const kSurfaceSessionClassPathName = "android/view/SurfaceSession"; 63const char* const kSurfaceClassPathName = "android/view/Surface"; 64 65struct sso_t { 66 jfieldID client; 67}; 68static sso_t sso; 69 70struct so_t { 71 jfieldID surfaceControl; 72 jfieldID surfaceGenerationId; 73 jfieldID surface; 74 jfieldID saveCount; 75 jfieldID canvas; 76}; 77static so_t so; 78 79struct ro_t { 80 jfieldID l; 81 jfieldID t; 82 jfieldID r; 83 jfieldID b; 84}; 85static ro_t ro; 86 87struct po_t { 88 jfieldID x; 89 jfieldID y; 90}; 91static po_t po; 92 93struct co_t { 94 jfieldID surfaceFormat; 95}; 96static co_t co; 97 98struct no_t { 99 jfieldID native_canvas; 100 jfieldID native_region; 101 jfieldID native_parcel; 102}; 103static no_t no; 104 105 106// ---------------------------------------------------------------------------- 107// ---------------------------------------------------------------------------- 108// ---------------------------------------------------------------------------- 109 110static void SurfaceSession_init(JNIEnv* env, jobject clazz) 111{ 112 sp<SurfaceComposerClient> client = new SurfaceComposerClient; 113 client->incStrong(clazz); 114 env->SetIntField(clazz, sso.client, (int)client.get()); 115} 116 117static void SurfaceSession_destroy(JNIEnv* env, jobject clazz) 118{ 119 SurfaceComposerClient* client = 120 (SurfaceComposerClient*)env->GetIntField(clazz, sso.client); 121 if (client != 0) { 122 client->decStrong(clazz); 123 env->SetIntField(clazz, sso.client, 0); 124 } 125} 126 127static void SurfaceSession_kill(JNIEnv* env, jobject clazz) 128{ 129 SurfaceComposerClient* client = 130 (SurfaceComposerClient*)env->GetIntField(clazz, sso.client); 131 if (client != 0) { 132 client->dispose(); 133 client->decStrong(clazz); 134 env->SetIntField(clazz, sso.client, 0); 135 } 136} 137 138// ---------------------------------------------------------------------------- 139 140static sp<SurfaceControl> getSurfaceControl(JNIEnv* env, jobject clazz) 141{ 142 SurfaceControl* const p = 143 (SurfaceControl*)env->GetIntField(clazz, so.surfaceControl); 144 return sp<SurfaceControl>(p); 145} 146 147static void setSurfaceControl(JNIEnv* env, jobject clazz, 148 const sp<SurfaceControl>& surface) 149{ 150 SurfaceControl* const p = 151 (SurfaceControl*)env->GetIntField(clazz, so.surfaceControl); 152 if (surface.get()) { 153 surface->incStrong(clazz); 154 } 155 if (p) { 156 p->decStrong(clazz); 157 } 158 env->SetIntField(clazz, so.surfaceControl, (int)surface.get()); 159} 160 161static sp<Surface> getSurface(JNIEnv* env, jobject clazz) 162{ 163 sp<Surface> result(Surface_getSurface(env, clazz)); 164 if (result == 0) { 165 /* 166 * if this method is called from the WindowManager's process, it means 167 * the client is is not remote, and therefore is allowed to have 168 * a Surface (data), so we create it here. 169 * If we don't have a SurfaceControl, it means we're in a different 170 * process. 171 */ 172 173 SurfaceControl* const control = 174 (SurfaceControl*)env->GetIntField(clazz, so.surfaceControl); 175 if (control) { 176 result = control->getSurface(); 177 if (result != 0) { 178 result->incStrong(clazz); 179 env->SetIntField(clazz, so.surface, (int)result.get()); 180 } 181 } 182 } 183 return result; 184} 185 186sp<ANativeWindow> android_Surface_getNativeWindow( 187 JNIEnv* env, jobject clazz) { 188 return getSurface(env, clazz); 189} 190 191bool android_Surface_isInstanceOf(JNIEnv* env, jobject obj) { 192 jclass surfaceClass = env->FindClass(kSurfaceClassPathName); 193 return env->IsInstanceOf(obj, surfaceClass); 194} 195 196sp<Surface> Surface_getSurface(JNIEnv* env, jobject clazz) { 197 sp<Surface> surface((Surface*)env->GetIntField(clazz, so.surface)); 198 return surface; 199} 200 201static void setSurface(JNIEnv* env, jobject clazz, const sp<Surface>& surface) 202{ 203 Surface* const p = (Surface*)env->GetIntField(clazz, so.surface); 204 if (surface.get()) { 205 surface->incStrong(clazz); 206 } 207 if (p) { 208 p->decStrong(clazz); 209 } 210 env->SetIntField(clazz, so.surface, (int)surface.get()); 211 // This test is conservative and it would be better to compare the ISurfaces 212 if (p && p != surface.get()) { 213 jint generationId = env->GetIntField(clazz, so.surfaceGenerationId); 214 generationId++; 215 env->SetIntField(clazz, so.surfaceGenerationId, generationId); 216 } 217} 218 219// ---------------------------------------------------------------------------- 220 221static void Surface_init( 222 JNIEnv* env, jobject clazz, 223 jobject session, 224 jint, jstring jname, jint dpy, jint w, jint h, jint format, jint flags) 225{ 226 if (session == NULL) { 227 doThrowNPE(env); 228 return; 229 } 230 231 SurfaceComposerClient* client = 232 (SurfaceComposerClient*)env->GetIntField(session, sso.client); 233 234 sp<SurfaceControl> surface; 235 if (jname == NULL) { 236 surface = client->createSurface(dpy, w, h, format, flags); 237 } else { 238 const jchar* str = env->GetStringCritical(jname, 0); 239 const String8 name(str, env->GetStringLength(jname)); 240 env->ReleaseStringCritical(jname, str); 241 surface = client->createSurface(name, dpy, w, h, format, flags); 242 } 243 244 if (surface == 0) { 245 jniThrowException(env, OutOfResourcesException, NULL); 246 return; 247 } 248 setSurfaceControl(env, clazz, surface); 249} 250 251static void Surface_initFromSurfaceTexture( 252 JNIEnv* env, jobject clazz, jobject jst) 253{ 254 sp<SurfaceTexture> st(SurfaceTexture_getSurfaceTexture(env, jst)); 255 256 if (st == NULL) { 257 jniThrowException(env, "java/lang/IllegalArgumentException", 258 "SurfaceTexture has already been released"); 259 return; 260 } 261 sp<ISurfaceTexture> bq = st->getBufferQueue(); 262 263 sp<Surface> surface(new Surface(bq)); 264 if (surface == NULL) { 265 jniThrowException(env, OutOfResourcesException, NULL); 266 return; 267 } 268 setSurfaceControl(env, clazz, NULL); 269 setSurface(env, clazz, surface); 270} 271 272static void Surface_initParcel(JNIEnv* env, jobject clazz, jobject argParcel) 273{ 274 Parcel* parcel = (Parcel*)env->GetIntField(argParcel, no.native_parcel); 275 if (parcel == NULL) { 276 doThrowNPE(env); 277 return; 278 } 279 280 sp<Surface> sur(Surface::readFromParcel(*parcel)); 281 setSurface(env, clazz, sur); 282} 283 284static jint Surface_getIdentity(JNIEnv* env, jobject clazz) 285{ 286 const sp<SurfaceControl>& control(getSurfaceControl(env, clazz)); 287 if (control != 0) return (jint) control->getIdentity(); 288 const sp<Surface>& surface(getSurface(env, clazz)); 289 if (surface != 0) return (jint) surface->getIdentity(); 290 return -1; 291} 292 293static void Surface_destroy(JNIEnv* env, jobject clazz, uintptr_t *ostack) 294{ 295 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 296 if (SurfaceControl::isValid(surface)) { 297 surface->clear(); 298 } 299 setSurfaceControl(env, clazz, 0); 300 setSurface(env, clazz, 0); 301} 302 303static void Surface_release(JNIEnv* env, jobject clazz, uintptr_t *ostack) 304{ 305 setSurfaceControl(env, clazz, 0); 306 setSurface(env, clazz, 0); 307} 308 309static jboolean Surface_isValid(JNIEnv* env, jobject clazz) 310{ 311 const sp<SurfaceControl>& surfaceControl(getSurfaceControl(env, clazz)); 312 if (surfaceControl != 0) { 313 return SurfaceControl::isValid(surfaceControl) ? JNI_TRUE : JNI_FALSE; 314 } 315 const sp<Surface>& surface(getSurface(env, clazz)); 316 return Surface::isValid(surface) ? JNI_TRUE : JNI_FALSE; 317} 318 319static inline SkBitmap::Config convertPixelFormat(PixelFormat format) 320{ 321 /* note: if PIXEL_FORMAT_RGBX_8888 means that all alpha bytes are 0xFF, then 322 we can map to SkBitmap::kARGB_8888_Config, and optionally call 323 bitmap.setIsOpaque(true) on the resulting SkBitmap (as an accelerator) 324 */ 325 switch (format) { 326 case PIXEL_FORMAT_RGBX_8888: return SkBitmap::kARGB_8888_Config; 327 case PIXEL_FORMAT_RGBA_8888: return SkBitmap::kARGB_8888_Config; 328 case PIXEL_FORMAT_RGBA_4444: return SkBitmap::kARGB_4444_Config; 329 case PIXEL_FORMAT_RGB_565: return SkBitmap::kRGB_565_Config; 330 case PIXEL_FORMAT_A_8: return SkBitmap::kA8_Config; 331 default: return SkBitmap::kNo_Config; 332 } 333} 334 335static jobject Surface_lockCanvas(JNIEnv* env, jobject clazz, jobject dirtyRect) 336{ 337 const sp<Surface>& surface(getSurface(env, clazz)); 338 if (!Surface::isValid(surface)) { 339 doThrowIAE(env); 340 return 0; 341 } 342 343 // get dirty region 344 Region dirtyRegion; 345 if (dirtyRect) { 346 Rect dirty; 347 dirty.left = env->GetIntField(dirtyRect, ro.l); 348 dirty.top = env->GetIntField(dirtyRect, ro.t); 349 dirty.right = env->GetIntField(dirtyRect, ro.r); 350 dirty.bottom= env->GetIntField(dirtyRect, ro.b); 351 if (!dirty.isEmpty()) { 352 dirtyRegion.set(dirty); 353 } 354 } else { 355 dirtyRegion.set(Rect(0x3FFF,0x3FFF)); 356 } 357 358 Surface::SurfaceInfo info; 359 status_t err = surface->lock(&info, &dirtyRegion); 360 if (err < 0) { 361 const char* const exception = (err == NO_MEMORY) ? 362 OutOfResourcesException : 363 "java/lang/IllegalArgumentException"; 364 jniThrowException(env, exception, NULL); 365 return 0; 366 } 367 368 // Associate a SkCanvas object to this surface 369 jobject canvas = env->GetObjectField(clazz, so.canvas); 370 env->SetIntField(canvas, co.surfaceFormat, info.format); 371 372 SkCanvas* nativeCanvas = (SkCanvas*)env->GetIntField(canvas, no.native_canvas); 373 SkBitmap bitmap; 374 ssize_t bpr = info.s * bytesPerPixel(info.format); 375 bitmap.setConfig(convertPixelFormat(info.format), info.w, info.h, bpr); 376 if (info.format == PIXEL_FORMAT_RGBX_8888) { 377 bitmap.setIsOpaque(true); 378 } 379 if (info.w > 0 && info.h > 0) { 380 bitmap.setPixels(info.bits); 381 } else { 382 // be safe with an empty bitmap. 383 bitmap.setPixels(NULL); 384 } 385 nativeCanvas->setBitmapDevice(bitmap); 386 387 SkRegion clipReg; 388 if (dirtyRegion.isRect()) { // very common case 389 const Rect b(dirtyRegion.getBounds()); 390 clipReg.setRect(b.left, b.top, b.right, b.bottom); 391 } else { 392 size_t count; 393 Rect const* r = dirtyRegion.getArray(&count); 394 while (count) { 395 clipReg.op(r->left, r->top, r->right, r->bottom, SkRegion::kUnion_Op); 396 r++, count--; 397 } 398 } 399 400 nativeCanvas->clipRegion(clipReg); 401 402 int saveCount = nativeCanvas->save(); 403 env->SetIntField(clazz, so.saveCount, saveCount); 404 405 if (dirtyRect) { 406 const Rect& bounds(dirtyRegion.getBounds()); 407 env->SetIntField(dirtyRect, ro.l, bounds.left); 408 env->SetIntField(dirtyRect, ro.t, bounds.top); 409 env->SetIntField(dirtyRect, ro.r, bounds.right); 410 env->SetIntField(dirtyRect, ro.b, bounds.bottom); 411 } 412 413 return canvas; 414} 415 416static void Surface_unlockCanvasAndPost( 417 JNIEnv* env, jobject clazz, jobject argCanvas) 418{ 419 jobject canvas = env->GetObjectField(clazz, so.canvas); 420 if (env->IsSameObject(canvas, argCanvas) == JNI_FALSE) { 421 doThrowIAE(env); 422 return; 423 } 424 425 const sp<Surface>& surface(getSurface(env, clazz)); 426 if (!Surface::isValid(surface)) 427 return; 428 429 // detach the canvas from the surface 430 SkCanvas* nativeCanvas = (SkCanvas*)env->GetIntField(canvas, no.native_canvas); 431 int saveCount = env->GetIntField(clazz, so.saveCount); 432 nativeCanvas->restoreToCount(saveCount); 433 nativeCanvas->setBitmapDevice(SkBitmap()); 434 env->SetIntField(clazz, so.saveCount, 0); 435 436 // unlock surface 437 status_t err = surface->unlockAndPost(); 438 if (err < 0) { 439 doThrowIAE(env); 440 } 441} 442 443static void Surface_unlockCanvas( 444 JNIEnv* env, jobject clazz, jobject argCanvas) 445{ 446 // XXX: this API has been removed 447 doThrowIAE(env); 448} 449 450static void Surface_openTransaction( 451 JNIEnv* env, jobject clazz) 452{ 453 SurfaceComposerClient::openGlobalTransaction(); 454} 455 456static void Surface_closeTransaction( 457 JNIEnv* env, jobject clazz) 458{ 459 SurfaceComposerClient::closeGlobalTransaction(); 460} 461 462static void Surface_setOrientation( 463 JNIEnv* env, jobject clazz, jint display, jint orientation, jint flags) 464{ 465 int err = SurfaceComposerClient::setOrientation(display, orientation, flags); 466 if (err < 0) { 467 doThrowIAE(env); 468 } 469} 470 471static void Surface_freezeDisplay( 472 JNIEnv* env, jobject clazz, jint display) 473{ 474 int err = SurfaceComposerClient::freezeDisplay(display, 0); 475 if (err < 0) { 476 doThrowIAE(env); 477 } 478} 479 480static void Surface_unfreezeDisplay( 481 JNIEnv* env, jobject clazz, jint display) 482{ 483 int err = SurfaceComposerClient::unfreezeDisplay(display, 0); 484 if (err < 0) { 485 doThrowIAE(env); 486 } 487} 488 489class ScreenshotPixelRef : public SkPixelRef { 490public: 491 ScreenshotPixelRef(SkColorTable* ctable) { 492 fCTable = ctable; 493 SkSafeRef(ctable); 494 setImmutable(); 495 } 496 virtual ~ScreenshotPixelRef() { 497 SkSafeUnref(fCTable); 498 } 499 500 status_t update(int width, int height, int minLayer, int maxLayer, bool allLayers) { 501 status_t res = (width > 0 && height > 0) 502 ? (allLayers 503 ? mScreenshot.update(width, height) 504 : mScreenshot.update(width, height, minLayer, maxLayer)) 505 : mScreenshot.update(); 506 if (res != NO_ERROR) { 507 return res; 508 } 509 510 return NO_ERROR; 511 } 512 513 uint32_t getWidth() const { 514 return mScreenshot.getWidth(); 515 } 516 517 uint32_t getHeight() const { 518 return mScreenshot.getHeight(); 519 } 520 521 uint32_t getStride() const { 522 return mScreenshot.getStride(); 523 } 524 525 uint32_t getFormat() const { 526 return mScreenshot.getFormat(); 527 } 528 529protected: 530 // overrides from SkPixelRef 531 virtual void* onLockPixels(SkColorTable** ct) { 532 *ct = fCTable; 533 return (void*)mScreenshot.getPixels(); 534 } 535 536 virtual void onUnlockPixels() { 537 } 538 539private: 540 ScreenshotClient mScreenshot; 541 SkColorTable* fCTable; 542 543 typedef SkPixelRef INHERITED; 544}; 545 546static jobject doScreenshot(JNIEnv* env, jobject clazz, jint width, jint height, 547 jint minLayer, jint maxLayer, bool allLayers) 548{ 549 ScreenshotPixelRef* pixels = new ScreenshotPixelRef(NULL); 550 if (pixels->update(width, height, minLayer, maxLayer, allLayers) != NO_ERROR) { 551 delete pixels; 552 return 0; 553 } 554 555 uint32_t w = pixels->getWidth(); 556 uint32_t h = pixels->getHeight(); 557 uint32_t s = pixels->getStride(); 558 uint32_t f = pixels->getFormat(); 559 ssize_t bpr = s * android::bytesPerPixel(f); 560 561 SkBitmap* bitmap = new SkBitmap(); 562 bitmap->setConfig(convertPixelFormat(f), w, h, bpr); 563 if (f == PIXEL_FORMAT_RGBX_8888) { 564 bitmap->setIsOpaque(true); 565 } 566 567 if (w > 0 && h > 0) { 568 bitmap->setPixelRef(pixels)->unref(); 569 bitmap->lockPixels(); 570 } else { 571 // be safe with an empty bitmap. 572 delete pixels; 573 bitmap->setPixels(NULL); 574 } 575 576 return GraphicsJNI::createBitmap(env, bitmap, false, NULL); 577} 578 579static jobject Surface_screenshotAll(JNIEnv* env, jobject clazz, jint width, jint height) 580{ 581 return doScreenshot(env, clazz, width, height, 0, 0, true); 582} 583 584static jobject Surface_screenshot(JNIEnv* env, jobject clazz, jint width, jint height, 585 jint minLayer, jint maxLayer) 586{ 587 return doScreenshot(env, clazz, width, height, minLayer, maxLayer, false); 588} 589 590static void Surface_setLayer( 591 JNIEnv* env, jobject clazz, jint zorder) 592{ 593 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 594 if (surface == 0) return; 595 status_t err = surface->setLayer(zorder); 596 if (err<0 && err!=NO_INIT) { 597 doThrowIAE(env); 598 } 599} 600 601static void Surface_setPosition( 602 JNIEnv* env, jobject clazz, jfloat x, jfloat y) 603{ 604 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 605 if (surface == 0) return; 606 status_t err = surface->setPosition(x, y); 607 if (err<0 && err!=NO_INIT) { 608 doThrowIAE(env); 609 } 610} 611 612static void Surface_setSize( 613 JNIEnv* env, jobject clazz, jint w, jint h) 614{ 615 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 616 if (surface == 0) return; 617 status_t err = surface->setSize(w, h); 618 if (err<0 && err!=NO_INIT) { 619 doThrowIAE(env); 620 } 621} 622 623static void Surface_hide( 624 JNIEnv* env, jobject clazz) 625{ 626 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 627 if (surface == 0) return; 628 status_t err = surface->hide(); 629 if (err<0 && err!=NO_INIT) { 630 doThrowIAE(env); 631 } 632} 633 634static void Surface_show( 635 JNIEnv* env, jobject clazz) 636{ 637 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 638 if (surface == 0) return; 639 status_t err = surface->show(); 640 if (err<0 && err!=NO_INIT) { 641 doThrowIAE(env); 642 } 643} 644 645static void Surface_freeze( 646 JNIEnv* env, jobject clazz) 647{ 648 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 649 if (surface == 0) return; 650 status_t err = surface->freeze(); 651 if (err<0 && err!=NO_INIT) { 652 doThrowIAE(env); 653 } 654} 655 656static void Surface_unfreeze( 657 JNIEnv* env, jobject clazz) 658{ 659 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 660 if (surface == 0) return; 661 status_t err = surface->unfreeze(); 662 if (err<0 && err!=NO_INIT) { 663 doThrowIAE(env); 664 } 665} 666 667static void Surface_setFlags( 668 JNIEnv* env, jobject clazz, jint flags, jint mask) 669{ 670 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 671 if (surface == 0) return; 672 status_t err = surface->setFlags(flags, mask); 673 if (err<0 && err!=NO_INIT) { 674 doThrowIAE(env); 675 } 676} 677 678static void Surface_setTransparentRegion( 679 JNIEnv* env, jobject clazz, jobject argRegion) 680{ 681 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 682 if (surface == 0) return; 683 SkRegion* nativeRegion = (SkRegion*)env->GetIntField(argRegion, no.native_region); 684 685 const SkIRect& b(nativeRegion->getBounds()); 686 Region reg(Rect(b.fLeft, b.fTop, b.fRight, b.fBottom)); 687 if (nativeRegion->isComplex()) { 688 SkRegion::Iterator it(*nativeRegion); 689 while (!it.done()) { 690 const SkIRect& r(it.rect()); 691 reg.addRectUnchecked(r.fLeft, r.fTop, r.fRight, r.fBottom); 692 it.next(); 693 } 694 } 695 696 status_t err = surface->setTransparentRegionHint(reg); 697 if (err<0 && err!=NO_INIT) { 698 doThrowIAE(env); 699 } 700} 701 702static void Surface_setAlpha( 703 JNIEnv* env, jobject clazz, jfloat alpha) 704{ 705 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 706 if (surface == 0) return; 707 status_t err = surface->setAlpha(alpha); 708 if (err<0 && err!=NO_INIT) { 709 doThrowIAE(env); 710 } 711} 712 713static void Surface_setMatrix( 714 JNIEnv* env, jobject clazz, 715 jfloat dsdx, jfloat dtdx, jfloat dsdy, jfloat dtdy) 716{ 717 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 718 if (surface == 0) return; 719 status_t err = surface->setMatrix(dsdx, dtdx, dsdy, dtdy); 720 if (err<0 && err!=NO_INIT) { 721 doThrowIAE(env); 722 } 723} 724 725static void Surface_setFreezeTint( 726 JNIEnv* env, jobject clazz, 727 jint tint) 728{ 729 const sp<SurfaceControl>& surface(getSurfaceControl(env, clazz)); 730 if (surface == 0) return; 731 status_t err = surface->setFreezeTint(tint); 732 if (err<0 && err!=NO_INIT) { 733 doThrowIAE(env); 734 } 735} 736 737// ---------------------------------------------------------------------------- 738 739static void Surface_copyFrom( 740 JNIEnv* env, jobject clazz, jobject other) 741{ 742 if (clazz == other) 743 return; 744 745 if (other == NULL) { 746 doThrowNPE(env); 747 return; 748 } 749 750 /* 751 * This is used by the WindowManagerService just after constructing 752 * a Surface and is necessary for returning the Surface reference to 753 * the caller. At this point, we should only have a SurfaceControl. 754 */ 755 756 const sp<SurfaceControl>& surface = getSurfaceControl(env, clazz); 757 const sp<SurfaceControl>& rhs = getSurfaceControl(env, other); 758 if (!SurfaceControl::isSameSurface(surface, rhs)) { 759 // we reassign the surface only if it's a different one 760 // otherwise we would loose our client-side state. 761 setSurfaceControl(env, clazz, rhs); 762 } 763} 764 765static void Surface_transferFrom( 766 JNIEnv* env, jobject clazz, jobject other) 767{ 768 if (clazz == other) 769 return; 770 771 if (other == NULL) { 772 doThrowNPE(env); 773 return; 774 } 775 776 sp<SurfaceControl> control(getSurfaceControl(env, other)); 777 sp<Surface> surface(Surface_getSurface(env, other)); 778 setSurfaceControl(env, clazz, control); 779 setSurface(env, clazz, surface); 780 setSurfaceControl(env, other, 0); 781 setSurface(env, other, 0); 782} 783 784static void Surface_readFromParcel( 785 JNIEnv* env, jobject clazz, jobject argParcel) 786{ 787 Parcel* parcel = (Parcel*)env->GetIntField( argParcel, no.native_parcel); 788 if (parcel == NULL) { 789 doThrowNPE(env); 790 return; 791 } 792 793 sp<Surface> sur(Surface::readFromParcel(*parcel)); 794 setSurface(env, clazz, sur); 795} 796 797static void Surface_writeToParcel( 798 JNIEnv* env, jobject clazz, jobject argParcel, jint flags) 799{ 800 Parcel* parcel = (Parcel*)env->GetIntField( 801 argParcel, no.native_parcel); 802 803 if (parcel == NULL) { 804 doThrowNPE(env); 805 return; 806 } 807 808 // The Java instance may have a SurfaceControl (in the case of the 809 // WindowManager or a system app). In that case, we defer to the 810 // SurfaceControl to send its ISurface. Otherwise, if the Surface is 811 // available we let it parcel itself. Finally, if the Surface is also 812 // NULL we fall back to using the SurfaceControl path which sends an 813 // empty surface; this matches legacy behavior. 814 const sp<SurfaceControl>& control(getSurfaceControl(env, clazz)); 815 if (control != NULL) { 816 SurfaceControl::writeSurfaceToParcel(control, parcel); 817 } else { 818 sp<Surface> surface(Surface_getSurface(env, clazz)); 819 if (surface != NULL) { 820 Surface::writeToParcel(surface, parcel); 821 } else { 822 SurfaceControl::writeSurfaceToParcel(NULL, parcel); 823 } 824 } 825 if (flags & PARCELABLE_WRITE_RETURN_VALUE) { 826 setSurfaceControl(env, clazz, NULL); 827 setSurface(env, clazz, NULL); 828 } 829} 830 831// ---------------------------------------------------------------------------- 832// ---------------------------------------------------------------------------- 833// ---------------------------------------------------------------------------- 834 835static void nativeClassInit(JNIEnv* env, jclass clazz); 836 837static JNINativeMethod gSurfaceSessionMethods[] = { 838 {"init", "()V", (void*)SurfaceSession_init }, 839 {"destroy", "()V", (void*)SurfaceSession_destroy }, 840 {"kill", "()V", (void*)SurfaceSession_kill }, 841}; 842 843static JNINativeMethod gSurfaceMethods[] = { 844 {"nativeClassInit", "()V", (void*)nativeClassInit }, 845 {"init", "(Landroid/view/SurfaceSession;ILjava/lang/String;IIIII)V", (void*)Surface_init }, 846 {"init", "(Landroid/os/Parcel;)V", (void*)Surface_initParcel }, 847 {"initFromSurfaceTexture", "(Landroid/graphics/SurfaceTexture;)V", (void*)Surface_initFromSurfaceTexture }, 848 {"getIdentity", "()I", (void*)Surface_getIdentity }, 849 {"destroy", "()V", (void*)Surface_destroy }, 850 {"release", "()V", (void*)Surface_release }, 851 {"copyFrom", "(Landroid/view/Surface;)V", (void*)Surface_copyFrom }, 852 {"transferFrom", "(Landroid/view/Surface;)V", (void*)Surface_transferFrom }, 853 {"isValid", "()Z", (void*)Surface_isValid }, 854 {"lockCanvasNative", "(Landroid/graphics/Rect;)Landroid/graphics/Canvas;", (void*)Surface_lockCanvas }, 855 {"unlockCanvasAndPost", "(Landroid/graphics/Canvas;)V", (void*)Surface_unlockCanvasAndPost }, 856 {"unlockCanvas", "(Landroid/graphics/Canvas;)V", (void*)Surface_unlockCanvas }, 857 {"openTransaction", "()V", (void*)Surface_openTransaction }, 858 {"closeTransaction", "()V", (void*)Surface_closeTransaction }, 859 {"setOrientation", "(III)V", (void*)Surface_setOrientation }, 860 {"freezeDisplay", "(I)V", (void*)Surface_freezeDisplay }, 861 {"unfreezeDisplay", "(I)V", (void*)Surface_unfreezeDisplay }, 862 {"screenshot", "(II)Landroid/graphics/Bitmap;", (void*)Surface_screenshotAll }, 863 {"screenshot", "(IIII)Landroid/graphics/Bitmap;", (void*)Surface_screenshot }, 864 {"setLayer", "(I)V", (void*)Surface_setLayer }, 865 {"setPosition", "(FF)V",(void*)Surface_setPosition }, 866 {"setSize", "(II)V",(void*)Surface_setSize }, 867 {"hide", "()V", (void*)Surface_hide }, 868 {"show", "()V", (void*)Surface_show }, 869 {"freeze", "()V", (void*)Surface_freeze }, 870 {"unfreeze", "()V", (void*)Surface_unfreeze }, 871 {"setFlags", "(II)V",(void*)Surface_setFlags }, 872 {"setTransparentRegionHint","(Landroid/graphics/Region;)V", (void*)Surface_setTransparentRegion }, 873 {"setAlpha", "(F)V", (void*)Surface_setAlpha }, 874 {"setMatrix", "(FFFF)V", (void*)Surface_setMatrix }, 875 {"setFreezeTint", "(I)V", (void*)Surface_setFreezeTint }, 876 {"readFromParcel", "(Landroid/os/Parcel;)V", (void*)Surface_readFromParcel }, 877 {"writeToParcel", "(Landroid/os/Parcel;I)V", (void*)Surface_writeToParcel }, 878}; 879 880void nativeClassInit(JNIEnv* env, jclass clazz) 881{ 882 so.surface = env->GetFieldID(clazz, ANDROID_VIEW_SURFACE_JNI_ID, "I"); 883 so.surfaceGenerationId = env->GetFieldID(clazz, "mSurfaceGenerationId", "I"); 884 so.surfaceControl = env->GetFieldID(clazz, "mSurfaceControl", "I"); 885 so.saveCount = env->GetFieldID(clazz, "mSaveCount", "I"); 886 so.canvas = env->GetFieldID(clazz, "mCanvas", "Landroid/graphics/Canvas;"); 887 888 jclass surfaceSession = env->FindClass("android/view/SurfaceSession"); 889 sso.client = env->GetFieldID(surfaceSession, "mClient", "I"); 890 891 jclass canvas = env->FindClass("android/graphics/Canvas"); 892 no.native_canvas = env->GetFieldID(canvas, "mNativeCanvas", "I"); 893 co.surfaceFormat = env->GetFieldID(canvas, "mSurfaceFormat", "I"); 894 895 jclass region = env->FindClass("android/graphics/Region"); 896 no.native_region = env->GetFieldID(region, "mNativeRegion", "I"); 897 898 jclass parcel = env->FindClass("android/os/Parcel"); 899 no.native_parcel = env->GetFieldID(parcel, "mNativePtr", "I"); 900 901 jclass rect = env->FindClass("android/graphics/Rect"); 902 ro.l = env->GetFieldID(rect, "left", "I"); 903 ro.t = env->GetFieldID(rect, "top", "I"); 904 ro.r = env->GetFieldID(rect, "right", "I"); 905 ro.b = env->GetFieldID(rect, "bottom", "I"); 906 907 jclass point = env->FindClass("android/graphics/Point"); 908 po.x = env->GetFieldID(point, "x", "I"); 909 po.y = env->GetFieldID(point, "y", "I"); 910} 911 912int register_android_view_Surface(JNIEnv* env) 913{ 914 int err; 915 err = AndroidRuntime::registerNativeMethods(env, kSurfaceSessionClassPathName, 916 gSurfaceSessionMethods, NELEM(gSurfaceSessionMethods)); 917 918 err |= AndroidRuntime::registerNativeMethods(env, kSurfaceClassPathName, 919 gSurfaceMethods, NELEM(gSurfaceMethods)); 920 return err; 921} 922 923}; 924