Graphics.cpp revision c1b33d665c8caf5760f68c45c6ca0baa649b832a
1#define LOG_TAG "GraphicsJNI" 2 3#include "jni.h" 4#include "JNIHelp.h" 5#include "GraphicsJNI.h" 6 7#include "Canvas.h" 8#include "SkCanvas.h" 9#include "SkDevice.h" 10#include "SkMath.h" 11#include "SkRegion.h" 12#include <android_runtime/AndroidRuntime.h> 13 14#include <Caches.h> 15#include <TextureCache.h> 16 17void doThrowNPE(JNIEnv* env) { 18 jniThrowNullPointerException(env, NULL); 19} 20 21void doThrowAIOOBE(JNIEnv* env) { 22 jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL); 23} 24 25void doThrowRE(JNIEnv* env, const char* msg) { 26 jniThrowRuntimeException(env, msg); 27} 28 29void doThrowIAE(JNIEnv* env, const char* msg) { 30 jniThrowException(env, "java/lang/IllegalArgumentException", msg); 31} 32 33void doThrowISE(JNIEnv* env, const char* msg) { 34 jniThrowException(env, "java/lang/IllegalStateException", msg); 35} 36 37void doThrowOOME(JNIEnv* env, const char* msg) { 38 jniThrowException(env, "java/lang/OutOfMemoryError", msg); 39} 40 41void doThrowIOE(JNIEnv* env, const char* msg) { 42 jniThrowException(env, "java/io/IOException", msg); 43} 44 45bool GraphicsJNI::hasException(JNIEnv *env) { 46 if (env->ExceptionCheck() != 0) { 47 ALOGE("*** Uncaught exception returned from Java call!\n"); 48 env->ExceptionDescribe(); 49 return true; 50 } 51 return false; 52} 53 54/////////////////////////////////////////////////////////////////////////////// 55 56AutoJavaFloatArray::AutoJavaFloatArray(JNIEnv* env, jfloatArray array, 57 int minLength, JNIAccess access) 58: fEnv(env), fArray(array), fPtr(NULL), fLen(0) { 59 SkASSERT(env); 60 if (array) { 61 fLen = env->GetArrayLength(array); 62 if (fLen < minLength) { 63 sk_throw(); 64 } 65 fPtr = env->GetFloatArrayElements(array, NULL); 66 } 67 fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0; 68} 69 70AutoJavaFloatArray::~AutoJavaFloatArray() { 71 if (fPtr) { 72 fEnv->ReleaseFloatArrayElements(fArray, fPtr, fReleaseMode); 73 } 74} 75 76AutoJavaIntArray::AutoJavaIntArray(JNIEnv* env, jintArray array, 77 int minLength) 78: fEnv(env), fArray(array), fPtr(NULL), fLen(0) { 79 SkASSERT(env); 80 if (array) { 81 fLen = env->GetArrayLength(array); 82 if (fLen < minLength) { 83 sk_throw(); 84 } 85 fPtr = env->GetIntArrayElements(array, NULL); 86 } 87} 88 89AutoJavaIntArray::~AutoJavaIntArray() { 90 if (fPtr) { 91 fEnv->ReleaseIntArrayElements(fArray, fPtr, 0); 92 } 93} 94 95AutoJavaShortArray::AutoJavaShortArray(JNIEnv* env, jshortArray array, 96 int minLength, JNIAccess access) 97: fEnv(env), fArray(array), fPtr(NULL), fLen(0) { 98 SkASSERT(env); 99 if (array) { 100 fLen = env->GetArrayLength(array); 101 if (fLen < minLength) { 102 sk_throw(); 103 } 104 fPtr = env->GetShortArrayElements(array, NULL); 105 } 106 fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0; 107} 108 109AutoJavaShortArray::~AutoJavaShortArray() { 110 if (fPtr) { 111 fEnv->ReleaseShortArrayElements(fArray, fPtr, fReleaseMode); 112 } 113} 114 115AutoJavaByteArray::AutoJavaByteArray(JNIEnv* env, jbyteArray array, 116 int minLength) 117: fEnv(env), fArray(array), fPtr(NULL), fLen(0) { 118 SkASSERT(env); 119 if (array) { 120 fLen = env->GetArrayLength(array); 121 if (fLen < minLength) { 122 sk_throw(); 123 } 124 fPtr = env->GetByteArrayElements(array, NULL); 125 } 126} 127 128AutoJavaByteArray::~AutoJavaByteArray() { 129 if (fPtr) { 130 fEnv->ReleaseByteArrayElements(fArray, fPtr, 0); 131 } 132} 133 134/////////////////////////////////////////////////////////////////////////////// 135 136static jclass gRect_class; 137static jfieldID gRect_leftFieldID; 138static jfieldID gRect_topFieldID; 139static jfieldID gRect_rightFieldID; 140static jfieldID gRect_bottomFieldID; 141 142static jclass gRectF_class; 143static jfieldID gRectF_leftFieldID; 144static jfieldID gRectF_topFieldID; 145static jfieldID gRectF_rightFieldID; 146static jfieldID gRectF_bottomFieldID; 147 148static jclass gPoint_class; 149static jfieldID gPoint_xFieldID; 150static jfieldID gPoint_yFieldID; 151 152static jclass gPointF_class; 153static jfieldID gPointF_xFieldID; 154static jfieldID gPointF_yFieldID; 155 156static jclass gBitmap_class; 157static jfieldID gBitmap_skBitmapPtr; 158static jmethodID gBitmap_constructorMethodID; 159static jmethodID gBitmap_reinitMethodID; 160static jmethodID gBitmap_getAllocationByteCountMethodID; 161 162static jclass gBitmapConfig_class; 163static jfieldID gBitmapConfig_nativeInstanceID; 164 165static jclass gBitmapRegionDecoder_class; 166static jmethodID gBitmapRegionDecoder_constructorMethodID; 167 168static jclass gCanvas_class; 169static jfieldID gCanvas_nativeInstanceID; 170 171static jclass gPicture_class; 172static jfieldID gPicture_nativeInstanceID; 173 174static jclass gRegion_class; 175static jfieldID gRegion_nativeInstanceID; 176static jmethodID gRegion_constructorMethodID; 177 178static jclass gByte_class; 179static jobject gVMRuntime; 180static jclass gVMRuntime_class; 181static jmethodID gVMRuntime_newNonMovableArray; 182static jmethodID gVMRuntime_addressOf; 183 184/////////////////////////////////////////////////////////////////////////////// 185 186void GraphicsJNI::get_jrect(JNIEnv* env, jobject obj, int* L, int* T, int* R, int* B) 187{ 188 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 189 190 *L = env->GetIntField(obj, gRect_leftFieldID); 191 *T = env->GetIntField(obj, gRect_topFieldID); 192 *R = env->GetIntField(obj, gRect_rightFieldID); 193 *B = env->GetIntField(obj, gRect_bottomFieldID); 194} 195 196void GraphicsJNI::set_jrect(JNIEnv* env, jobject obj, int L, int T, int R, int B) 197{ 198 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 199 200 env->SetIntField(obj, gRect_leftFieldID, L); 201 env->SetIntField(obj, gRect_topFieldID, T); 202 env->SetIntField(obj, gRect_rightFieldID, R); 203 env->SetIntField(obj, gRect_bottomFieldID, B); 204} 205 206SkIRect* GraphicsJNI::jrect_to_irect(JNIEnv* env, jobject obj, SkIRect* ir) 207{ 208 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 209 210 ir->set(env->GetIntField(obj, gRect_leftFieldID), 211 env->GetIntField(obj, gRect_topFieldID), 212 env->GetIntField(obj, gRect_rightFieldID), 213 env->GetIntField(obj, gRect_bottomFieldID)); 214 return ir; 215} 216 217void GraphicsJNI::irect_to_jrect(const SkIRect& ir, JNIEnv* env, jobject obj) 218{ 219 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 220 221 env->SetIntField(obj, gRect_leftFieldID, ir.fLeft); 222 env->SetIntField(obj, gRect_topFieldID, ir.fTop); 223 env->SetIntField(obj, gRect_rightFieldID, ir.fRight); 224 env->SetIntField(obj, gRect_bottomFieldID, ir.fBottom); 225} 226 227SkRect* GraphicsJNI::jrectf_to_rect(JNIEnv* env, jobject obj, SkRect* r) 228{ 229 SkASSERT(env->IsInstanceOf(obj, gRectF_class)); 230 231 r->set(env->GetFloatField(obj, gRectF_leftFieldID), 232 env->GetFloatField(obj, gRectF_topFieldID), 233 env->GetFloatField(obj, gRectF_rightFieldID), 234 env->GetFloatField(obj, gRectF_bottomFieldID)); 235 return r; 236} 237 238SkRect* GraphicsJNI::jrect_to_rect(JNIEnv* env, jobject obj, SkRect* r) 239{ 240 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 241 242 r->set(SkIntToScalar(env->GetIntField(obj, gRect_leftFieldID)), 243 SkIntToScalar(env->GetIntField(obj, gRect_topFieldID)), 244 SkIntToScalar(env->GetIntField(obj, gRect_rightFieldID)), 245 SkIntToScalar(env->GetIntField(obj, gRect_bottomFieldID))); 246 return r; 247} 248 249void GraphicsJNI::rect_to_jrectf(const SkRect& r, JNIEnv* env, jobject obj) 250{ 251 SkASSERT(env->IsInstanceOf(obj, gRectF_class)); 252 253 env->SetFloatField(obj, gRectF_leftFieldID, SkScalarToFloat(r.fLeft)); 254 env->SetFloatField(obj, gRectF_topFieldID, SkScalarToFloat(r.fTop)); 255 env->SetFloatField(obj, gRectF_rightFieldID, SkScalarToFloat(r.fRight)); 256 env->SetFloatField(obj, gRectF_bottomFieldID, SkScalarToFloat(r.fBottom)); 257} 258 259SkIPoint* GraphicsJNI::jpoint_to_ipoint(JNIEnv* env, jobject obj, SkIPoint* point) 260{ 261 SkASSERT(env->IsInstanceOf(obj, gPoint_class)); 262 263 point->set(env->GetIntField(obj, gPoint_xFieldID), 264 env->GetIntField(obj, gPoint_yFieldID)); 265 return point; 266} 267 268void GraphicsJNI::ipoint_to_jpoint(const SkIPoint& ir, JNIEnv* env, jobject obj) 269{ 270 SkASSERT(env->IsInstanceOf(obj, gPoint_class)); 271 272 env->SetIntField(obj, gPoint_xFieldID, ir.fX); 273 env->SetIntField(obj, gPoint_yFieldID, ir.fY); 274} 275 276SkPoint* GraphicsJNI::jpointf_to_point(JNIEnv* env, jobject obj, SkPoint* point) 277{ 278 SkASSERT(env->IsInstanceOf(obj, gPointF_class)); 279 280 point->set(env->GetIntField(obj, gPointF_xFieldID), 281 env->GetIntField(obj, gPointF_yFieldID)); 282 return point; 283} 284 285void GraphicsJNI::point_to_jpointf(const SkPoint& r, JNIEnv* env, jobject obj) 286{ 287 SkASSERT(env->IsInstanceOf(obj, gPointF_class)); 288 289 env->SetFloatField(obj, gPointF_xFieldID, SkScalarToFloat(r.fX)); 290 env->SetFloatField(obj, gPointF_yFieldID, SkScalarToFloat(r.fY)); 291} 292 293// This enum must keep these int values, to match the int values 294// in the java Bitmap.Config enum. 295enum LegacyBitmapConfig { 296 kNo_LegacyBitmapConfig = 0, 297 kA8_LegacyBitmapConfig = 1, 298 kIndex8_LegacyBitmapConfig = 2, 299 kRGB_565_LegacyBitmapConfig = 3, 300 kARGB_4444_LegacyBitmapConfig = 4, 301 kARGB_8888_LegacyBitmapConfig = 5, 302 303 kLastEnum_LegacyBitmapConfig = kARGB_8888_LegacyBitmapConfig 304}; 305 306jint GraphicsJNI::colorTypeToLegacyBitmapConfig(SkColorType colorType) { 307 switch (colorType) { 308 case kN32_SkColorType: 309 return kARGB_8888_LegacyBitmapConfig; 310 case kARGB_4444_SkColorType: 311 return kARGB_4444_LegacyBitmapConfig; 312 case kRGB_565_SkColorType: 313 return kRGB_565_LegacyBitmapConfig; 314 case kIndex_8_SkColorType: 315 return kIndex8_LegacyBitmapConfig; 316 case kAlpha_8_SkColorType: 317 return kA8_LegacyBitmapConfig; 318 case kUnknown_SkColorType: 319 default: 320 break; 321 } 322 return kNo_LegacyBitmapConfig; 323} 324 325SkColorType GraphicsJNI::legacyBitmapConfigToColorType(jint legacyConfig) { 326 const uint8_t gConfig2ColorType[] = { 327 kUnknown_SkColorType, 328 kAlpha_8_SkColorType, 329 kIndex_8_SkColorType, 330 kRGB_565_SkColorType, 331 kARGB_4444_SkColorType, 332 kN32_SkColorType 333 }; 334 335 if (legacyConfig < 0 || legacyConfig > kLastEnum_LegacyBitmapConfig) { 336 legacyConfig = kNo_LegacyBitmapConfig; 337 } 338 return static_cast<SkColorType>(gConfig2ColorType[legacyConfig]); 339} 340 341SkBitmap* GraphicsJNI::getSkBitmap(JNIEnv* env, jobject bitmap) { 342 SkASSERT(env); 343 SkASSERT(bitmap); 344 SkASSERT(env->IsInstanceOf(bitmap, gBitmap_class)); 345 jlong bitmapHandle = env->GetLongField(bitmap, gBitmap_skBitmapPtr); 346 SkBitmap* b = reinterpret_cast<SkBitmap*>(bitmapHandle); 347 SkASSERT(b); 348 return b; 349} 350 351SkColorType GraphicsJNI::getNativeBitmapColorType(JNIEnv* env, jobject jconfig) { 352 SkASSERT(env); 353 if (NULL == jconfig) { 354 return kUnknown_SkColorType; 355 } 356 SkASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class)); 357 int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID); 358 return legacyBitmapConfigToColorType(c); 359} 360 361android::Canvas* GraphicsJNI::getNativeCanvas(JNIEnv* env, jobject canvas) { 362 SkASSERT(env); 363 SkASSERT(canvas); 364 SkASSERT(env->IsInstanceOf(canvas, gCanvas_class)); 365 jlong canvasHandle = env->GetLongField(canvas, gCanvas_nativeInstanceID); 366 if (!canvasHandle) { 367 return NULL; 368 } 369 return reinterpret_cast<android::Canvas*>(canvasHandle); 370} 371 372SkRegion* GraphicsJNI::getNativeRegion(JNIEnv* env, jobject region) 373{ 374 SkASSERT(env); 375 SkASSERT(region); 376 SkASSERT(env->IsInstanceOf(region, gRegion_class)); 377 jlong regionHandle = env->GetLongField(region, gRegion_nativeInstanceID); 378 SkRegion* r = reinterpret_cast<SkRegion*>(regionHandle); 379 SkASSERT(r); 380 return r; 381} 382 383/////////////////////////////////////////////////////////////////////////////////////////// 384 385// Assert that bitmap's SkAlphaType is consistent with isPremultiplied. 386static void assert_premultiplied(const SkBitmap& bitmap, bool isPremultiplied) { 387 // kOpaque_SkAlphaType and kIgnore_SkAlphaType mean that isPremultiplied is 388 // irrelevant. This just tests to ensure that the SkAlphaType is not 389 // opposite of isPremultiplied. 390 if (isPremultiplied) { 391 SkASSERT(bitmap.alphaType() != kUnpremul_SkAlphaType); 392 } else { 393 SkASSERT(bitmap.alphaType() != kPremul_SkAlphaType); 394 } 395} 396 397jobject GraphicsJNI::createBitmap(JNIEnv* env, SkBitmap* bitmap, jbyteArray buffer, 398 int bitmapCreateFlags, jbyteArray ninePatchChunk, jobject ninePatchInsets, int density) 399{ 400 SkASSERT(bitmap); 401 SkASSERT(bitmap->pixelRef()); 402 SkASSERT(!env->ExceptionCheck()); 403 bool isMutable = bitmapCreateFlags & kBitmapCreateFlag_Mutable; 404 bool isPremultiplied = bitmapCreateFlags & kBitmapCreateFlag_Premultiplied; 405 406 // The caller needs to have already set the alpha type properly, so the 407 // native SkBitmap stays in sync with the Java Bitmap. 408 assert_premultiplied(*bitmap, isPremultiplied); 409 410 jobject obj = env->NewObject(gBitmap_class, gBitmap_constructorMethodID, 411 reinterpret_cast<jlong>(bitmap), buffer, 412 bitmap->width(), bitmap->height(), density, isMutable, isPremultiplied, 413 ninePatchChunk, ninePatchInsets); 414 hasException(env); // For the side effect of logging. 415 return obj; 416} 417 418void GraphicsJNI::reinitBitmap(JNIEnv* env, jobject javaBitmap, SkBitmap* bitmap, 419 bool isPremultiplied) 420{ 421 // The caller needs to have already set the alpha type properly, so the 422 // native SkBitmap stays in sync with the Java Bitmap. 423 assert_premultiplied(*bitmap, isPremultiplied); 424 425 env->CallVoidMethod(javaBitmap, gBitmap_reinitMethodID, 426 bitmap->width(), bitmap->height(), isPremultiplied); 427} 428 429int GraphicsJNI::getBitmapAllocationByteCount(JNIEnv* env, jobject javaBitmap) 430{ 431 return env->CallIntMethod(javaBitmap, gBitmap_getAllocationByteCountMethodID); 432} 433 434jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap) 435{ 436 SkASSERT(bitmap != NULL); 437 438 jobject obj = env->NewObject(gBitmapRegionDecoder_class, 439 gBitmapRegionDecoder_constructorMethodID, 440 reinterpret_cast<jlong>(bitmap)); 441 hasException(env); // For the side effect of logging. 442 return obj; 443} 444 445jobject GraphicsJNI::createRegion(JNIEnv* env, SkRegion* region) 446{ 447 SkASSERT(region != NULL); 448 jobject obj = env->NewObject(gRegion_class, gRegion_constructorMethodID, 449 reinterpret_cast<jlong>(region), 0); 450 hasException(env); // For the side effect of logging. 451 return obj; 452} 453 454static JNIEnv* vm2env(JavaVM* vm) 455{ 456 JNIEnv* env = NULL; 457 if (vm->GetEnv((void**)&env, JNI_VERSION_1_4) != JNI_OK || NULL == env) 458 { 459 SkDebugf("------- [%p] vm->GetEnv() failed\n", vm); 460 sk_throw(); 461 } 462 return env; 463} 464 465/////////////////////////////////////////////////////////////////////////////// 466 467AndroidPixelRef::AndroidPixelRef(JNIEnv* env, const SkImageInfo& info, void* storage, 468 size_t rowBytes, jbyteArray storageObj, SkColorTable* ctable) : 469 SkMallocPixelRef(info, storage, rowBytes, ctable, (storageObj == NULL)), 470 fWrappedPixelRef(NULL) { 471 SkASSERT(storage); 472 SkASSERT(storageObj); 473 SkASSERT(env); 474 475 if (env->GetJavaVM(&fVM) != JNI_OK) { 476 SkDebugf("------ [%p] env->GetJavaVM failed\n", env); 477 sk_throw(); 478 } 479 480 fStorageObj = (jbyteArray) env->NewGlobalRef(storageObj); 481} 482 483AndroidPixelRef::AndroidPixelRef(AndroidPixelRef& wrappedPixelRef, const SkImageInfo& info, 484 size_t rowBytes, SkColorTable* ctable) : 485 SkMallocPixelRef(info, wrappedPixelRef.getAddr(), rowBytes, ctable, false), 486 fWrappedPixelRef(wrappedPixelRef.fWrappedPixelRef ? 487 wrappedPixelRef.fWrappedPixelRef : &wrappedPixelRef) 488{ 489 SkASSERT(fWrappedPixelRef); 490 SkSafeRef(fWrappedPixelRef); 491 492 // don't need to initialize this, as all the relevant logic delegates to the wrapped ref 493 fStorageObj = NULL; 494} 495 496AndroidPixelRef::~AndroidPixelRef() { 497 if (fWrappedPixelRef) { 498 SkSafeUnref(fWrappedPixelRef); 499 } else { 500 SkASSERT(fStorageObj); 501 JNIEnv* env = vm2env(fVM); 502 env->DeleteGlobalRef(fStorageObj); 503 } 504 505 if (android::uirenderer::Caches::hasInstance()) { 506 android::uirenderer::Caches::getInstance().textureCache.releaseTexture(getStableID()); 507 } 508} 509 510/////////////////////////////////////////////////////////////////////////////// 511 512static bool computeAllocationSize(const SkBitmap& bitmap, size_t* size) { 513 int32_t rowBytes32 = SkToS32(bitmap.rowBytes()); 514 int64_t bigSize = (int64_t)bitmap.height() * rowBytes32; 515 if (rowBytes32 < 0 || !sk_64_isS32(bigSize)) { 516 return false; // allocation will be too large 517 } 518 519 *size = sk_64_asS32(bigSize); 520 return true; 521} 522 523jbyteArray GraphicsJNI::allocateJavaPixelRef(JNIEnv* env, SkBitmap* bitmap, 524 SkColorTable* ctable) { 525 const SkImageInfo& info = bitmap->info(); 526 if (info.fColorType == kUnknown_SkColorType) { 527 doThrowIAE(env, "unknown bitmap configuration"); 528 return NULL; 529 } 530 531 size_t size; 532 if (!computeAllocationSize(*bitmap, &size)) { 533 return NULL; 534 } 535 536 // we must respect the rowBytes value already set on the bitmap instead of 537 // attempting to compute our own. 538 const size_t rowBytes = bitmap->rowBytes(); 539 540 jbyteArray arrayObj = (jbyteArray) env->CallObjectMethod(gVMRuntime, 541 gVMRuntime_newNonMovableArray, 542 gByte_class, size); 543 if (env->ExceptionCheck() != 0) { 544 return NULL; 545 } 546 SkASSERT(arrayObj); 547 jbyte* addr = (jbyte*) env->CallLongMethod(gVMRuntime, gVMRuntime_addressOf, arrayObj); 548 if (env->ExceptionCheck() != 0) { 549 return NULL; 550 } 551 SkASSERT(addr); 552 SkPixelRef* pr = new AndroidPixelRef(env, info, (void*) addr, rowBytes, arrayObj, ctable); 553 bitmap->setPixelRef(pr)->unref(); 554 // since we're already allocated, we lockPixels right away 555 // HeapAllocator behaves this way too 556 bitmap->lockPixels(); 557 558 return arrayObj; 559} 560 561struct AndroidPixelRefContext { 562 int32_t stableID; 563}; 564 565static void allocatePixelsReleaseProc(void* ptr, void* ctx) { 566 AndroidPixelRefContext* context = (AndroidPixelRefContext*)ctx; 567 if (android::uirenderer::Caches::hasInstance()) { 568 android::uirenderer::Caches::getInstance().textureCache.releaseTexture(context->stableID); 569 } 570 571 sk_free(ptr); 572 delete context; 573} 574 575bool GraphicsJNI::allocatePixels(JNIEnv* env, SkBitmap* bitmap, SkColorTable* ctable) { 576 const SkImageInfo& info = bitmap->info(); 577 if (info.fColorType == kUnknown_SkColorType) { 578 doThrowIAE(env, "unknown bitmap configuration"); 579 return NULL; 580 } 581 582 size_t size; 583 if (!computeAllocationSize(*bitmap, &size)) { 584 return false; 585 } 586 587 // we must respect the rowBytes value already set on the bitmap instead of 588 // attempting to compute our own. 589 const size_t rowBytes = bitmap->rowBytes(); 590 591 void* addr = sk_malloc_flags(size, 0); 592 if (NULL == addr) { 593 return false; 594 } 595 596 AndroidPixelRefContext* context = new AndroidPixelRefContext; 597 SkMallocPixelRef* pr = SkMallocPixelRef::NewWithProc(info, rowBytes, ctable, addr, 598 &allocatePixelsReleaseProc, context); 599 if (!pr) { 600 delete context; 601 return false; 602 } 603 604 // set the stableID in the context so that it can be used later in 605 // allocatePixelsReleaseProc to remove the texture from the cache. 606 context->stableID = pr->getStableID(); 607 608 bitmap->setPixelRef(pr)->unref(); 609 // since we're already allocated, we can lockPixels right away 610 bitmap->lockPixels(); 611 612 return true; 613} 614 615/////////////////////////////////////////////////////////////////////////////// 616 617JavaPixelAllocator::JavaPixelAllocator(JNIEnv* env) 618 : fStorageObj(NULL), 619 fAllocCount(0) { 620 if (env->GetJavaVM(&fVM) != JNI_OK) { 621 SkDebugf("------ [%p] env->GetJavaVM failed\n", env); 622 sk_throw(); 623 } 624} 625 626bool JavaPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) { 627 JNIEnv* env = vm2env(fVM); 628 629 fStorageObj = GraphicsJNI::allocateJavaPixelRef(env, bitmap, ctable); 630 fAllocCount += 1; 631 return fStorageObj != NULL; 632} 633 634//////////////////////////////////////////////////////////////////////////////// 635 636static jclass make_globalref(JNIEnv* env, const char classname[]) 637{ 638 jclass c = env->FindClass(classname); 639 SkASSERT(c); 640 return (jclass) env->NewGlobalRef(c); 641} 642 643static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz, 644 const char fieldname[], const char type[]) 645{ 646 jfieldID id = env->GetFieldID(clazz, fieldname, type); 647 SkASSERT(id); 648 return id; 649} 650 651int register_android_graphics_Graphics(JNIEnv* env) 652{ 653 jmethodID m; 654 jclass c; 655 656 gRect_class = make_globalref(env, "android/graphics/Rect"); 657 gRect_leftFieldID = getFieldIDCheck(env, gRect_class, "left", "I"); 658 gRect_topFieldID = getFieldIDCheck(env, gRect_class, "top", "I"); 659 gRect_rightFieldID = getFieldIDCheck(env, gRect_class, "right", "I"); 660 gRect_bottomFieldID = getFieldIDCheck(env, gRect_class, "bottom", "I"); 661 662 gRectF_class = make_globalref(env, "android/graphics/RectF"); 663 gRectF_leftFieldID = getFieldIDCheck(env, gRectF_class, "left", "F"); 664 gRectF_topFieldID = getFieldIDCheck(env, gRectF_class, "top", "F"); 665 gRectF_rightFieldID = getFieldIDCheck(env, gRectF_class, "right", "F"); 666 gRectF_bottomFieldID = getFieldIDCheck(env, gRectF_class, "bottom", "F"); 667 668 gPoint_class = make_globalref(env, "android/graphics/Point"); 669 gPoint_xFieldID = getFieldIDCheck(env, gPoint_class, "x", "I"); 670 gPoint_yFieldID = getFieldIDCheck(env, gPoint_class, "y", "I"); 671 672 gPointF_class = make_globalref(env, "android/graphics/PointF"); 673 gPointF_xFieldID = getFieldIDCheck(env, gPointF_class, "x", "F"); 674 gPointF_yFieldID = getFieldIDCheck(env, gPointF_class, "y", "F"); 675 676 gBitmap_class = make_globalref(env, "android/graphics/Bitmap"); 677 gBitmap_skBitmapPtr = getFieldIDCheck(env, gBitmap_class, "mSkBitmapPtr", "J"); 678 gBitmap_constructorMethodID = env->GetMethodID(gBitmap_class, "<init>", "(J[BIIIZZ[BLandroid/graphics/NinePatch$InsetStruct;)V"); 679 gBitmap_reinitMethodID = env->GetMethodID(gBitmap_class, "reinit", "(IIZ)V"); 680 gBitmap_getAllocationByteCountMethodID = env->GetMethodID(gBitmap_class, "getAllocationByteCount", "()I"); 681 gBitmapRegionDecoder_class = make_globalref(env, "android/graphics/BitmapRegionDecoder"); 682 gBitmapRegionDecoder_constructorMethodID = env->GetMethodID(gBitmapRegionDecoder_class, "<init>", "(J)V"); 683 684 gBitmapConfig_class = make_globalref(env, "android/graphics/Bitmap$Config"); 685 gBitmapConfig_nativeInstanceID = getFieldIDCheck(env, gBitmapConfig_class, 686 "nativeInt", "I"); 687 688 gCanvas_class = make_globalref(env, "android/graphics/Canvas"); 689 gCanvas_nativeInstanceID = getFieldIDCheck(env, gCanvas_class, "mNativeCanvasWrapper", "J"); 690 691 gPicture_class = make_globalref(env, "android/graphics/Picture"); 692 gPicture_nativeInstanceID = getFieldIDCheck(env, gPicture_class, "mNativePicture", "J"); 693 694 gRegion_class = make_globalref(env, "android/graphics/Region"); 695 gRegion_nativeInstanceID = getFieldIDCheck(env, gRegion_class, "mNativeRegion", "J"); 696 gRegion_constructorMethodID = env->GetMethodID(gRegion_class, "<init>", 697 "(JI)V"); 698 699 c = env->FindClass("java/lang/Byte"); 700 gByte_class = (jclass) env->NewGlobalRef( 701 env->GetStaticObjectField(c, env->GetStaticFieldID(c, "TYPE", "Ljava/lang/Class;"))); 702 703 gVMRuntime_class = make_globalref(env, "dalvik/system/VMRuntime"); 704 m = env->GetStaticMethodID(gVMRuntime_class, "getRuntime", "()Ldalvik/system/VMRuntime;"); 705 gVMRuntime = env->NewGlobalRef(env->CallStaticObjectMethod(gVMRuntime_class, m)); 706 gVMRuntime_newNonMovableArray = env->GetMethodID(gVMRuntime_class, "newNonMovableArray", 707 "(Ljava/lang/Class;I)Ljava/lang/Object;"); 708 gVMRuntime_addressOf = env->GetMethodID(gVMRuntime_class, "addressOf", "(Ljava/lang/Object;)J"); 709 710 return 0; 711} 712