Graphics.cpp revision 1a73f732f91e97c9c66b808c245ddda36a10e987
1#define LOG_TAG "GraphicsJNI" 2 3#include "jni.h" 4#include "JNIHelp.h" 5#include "GraphicsJNI.h" 6 7#include "SkCanvas.h" 8#include "SkDevice.h" 9#include "SkMath.h" 10#include "SkPicture.h" 11#include "SkRegion.h" 12#include <android_runtime/AndroidRuntime.h> 13 14void doThrowNPE(JNIEnv* env) { 15 jniThrowNullPointerException(env, NULL); 16} 17 18void doThrowAIOOBE(JNIEnv* env) { 19 jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL); 20} 21 22void doThrowRE(JNIEnv* env, const char* msg) { 23 jniThrowRuntimeException(env, msg); 24} 25 26void doThrowIAE(JNIEnv* env, const char* msg) { 27 jniThrowException(env, "java/lang/IllegalArgumentException", msg); 28} 29 30void doThrowISE(JNIEnv* env, const char* msg) { 31 jniThrowException(env, "java/lang/IllegalStateException", msg); 32} 33 34void doThrowOOME(JNIEnv* env, const char* msg) { 35 jniThrowException(env, "java/lang/OutOfMemoryError", msg); 36} 37 38void doThrowIOE(JNIEnv* env, const char* msg) { 39 jniThrowException(env, "java/io/IOException", msg); 40} 41 42bool GraphicsJNI::hasException(JNIEnv *env) { 43 if (env->ExceptionCheck() != 0) { 44 ALOGE("*** Uncaught exception returned from Java call!\n"); 45 env->ExceptionDescribe(); 46 return true; 47 } 48 return false; 49} 50 51/////////////////////////////////////////////////////////////////////////////// 52 53AutoJavaFloatArray::AutoJavaFloatArray(JNIEnv* env, jfloatArray array, 54 int minLength, JNIAccess access) 55: fEnv(env), fArray(array), fPtr(NULL), fLen(0) { 56 SkASSERT(env); 57 if (array) { 58 fLen = env->GetArrayLength(array); 59 if (fLen < minLength) { 60 sk_throw(); 61 } 62 fPtr = env->GetFloatArrayElements(array, NULL); 63 } 64 fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0; 65} 66 67AutoJavaFloatArray::~AutoJavaFloatArray() { 68 if (fPtr) { 69 fEnv->ReleaseFloatArrayElements(fArray, fPtr, fReleaseMode); 70 } 71} 72 73AutoJavaIntArray::AutoJavaIntArray(JNIEnv* env, jintArray array, 74 int minLength) 75: fEnv(env), fArray(array), fPtr(NULL), fLen(0) { 76 SkASSERT(env); 77 if (array) { 78 fLen = env->GetArrayLength(array); 79 if (fLen < minLength) { 80 sk_throw(); 81 } 82 fPtr = env->GetIntArrayElements(array, NULL); 83 } 84} 85 86AutoJavaIntArray::~AutoJavaIntArray() { 87 if (fPtr) { 88 fEnv->ReleaseIntArrayElements(fArray, fPtr, 0); 89 } 90} 91 92AutoJavaShortArray::AutoJavaShortArray(JNIEnv* env, jshortArray array, 93 int minLength, JNIAccess access) 94: fEnv(env), fArray(array), fPtr(NULL), fLen(0) { 95 SkASSERT(env); 96 if (array) { 97 fLen = env->GetArrayLength(array); 98 if (fLen < minLength) { 99 sk_throw(); 100 } 101 fPtr = env->GetShortArrayElements(array, NULL); 102 } 103 fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0; 104} 105 106AutoJavaShortArray::~AutoJavaShortArray() { 107 if (fPtr) { 108 fEnv->ReleaseShortArrayElements(fArray, fPtr, fReleaseMode); 109 } 110} 111 112AutoJavaByteArray::AutoJavaByteArray(JNIEnv* env, jbyteArray array, 113 int minLength) 114: fEnv(env), fArray(array), fPtr(NULL), fLen(0) { 115 SkASSERT(env); 116 if (array) { 117 fLen = env->GetArrayLength(array); 118 if (fLen < minLength) { 119 sk_throw(); 120 } 121 fPtr = env->GetByteArrayElements(array, NULL); 122 } 123} 124 125AutoJavaByteArray::~AutoJavaByteArray() { 126 if (fPtr) { 127 fEnv->ReleaseByteArrayElements(fArray, fPtr, 0); 128 } 129} 130 131/////////////////////////////////////////////////////////////////////////////// 132 133static jclass gRect_class; 134static jfieldID gRect_leftFieldID; 135static jfieldID gRect_topFieldID; 136static jfieldID gRect_rightFieldID; 137static jfieldID gRect_bottomFieldID; 138 139static jclass gRectF_class; 140static jfieldID gRectF_leftFieldID; 141static jfieldID gRectF_topFieldID; 142static jfieldID gRectF_rightFieldID; 143static jfieldID gRectF_bottomFieldID; 144 145static jclass gPoint_class; 146static jfieldID gPoint_xFieldID; 147static jfieldID gPoint_yFieldID; 148 149static jclass gPointF_class; 150static jfieldID gPointF_xFieldID; 151static jfieldID gPointF_yFieldID; 152 153static jclass gBitmap_class; 154static jfieldID gBitmap_nativeInstanceID; 155static jmethodID gBitmap_constructorMethodID; 156static jmethodID gBitmap_reinitMethodID; 157static jmethodID gBitmap_getAllocationByteCountMethodID; 158 159static jclass gBitmapConfig_class; 160static jfieldID gBitmapConfig_nativeInstanceID; 161 162static jclass gBitmapRegionDecoder_class; 163static jmethodID gBitmapRegionDecoder_constructorMethodID; 164 165static jclass gCanvas_class; 166static jfieldID gCanvas_nativeInstanceID; 167 168static jclass gPaint_class; 169static jfieldID gPaint_nativeInstanceID; 170static jfieldID gPaint_nativeTypefaceID; 171 172static jclass gPicture_class; 173static jfieldID gPicture_nativeInstanceID; 174 175static jclass gRegion_class; 176static jfieldID gRegion_nativeInstanceID; 177static jmethodID gRegion_constructorMethodID; 178 179static jclass gByte_class; 180static jobject gVMRuntime; 181static jclass gVMRuntime_class; 182static jmethodID gVMRuntime_newNonMovableArray; 183static jmethodID gVMRuntime_addressOf; 184 185/////////////////////////////////////////////////////////////////////////////// 186 187void GraphicsJNI::get_jrect(JNIEnv* env, jobject obj, int* L, int* T, int* R, int* B) 188{ 189 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 190 191 *L = env->GetIntField(obj, gRect_leftFieldID); 192 *T = env->GetIntField(obj, gRect_topFieldID); 193 *R = env->GetIntField(obj, gRect_rightFieldID); 194 *B = env->GetIntField(obj, gRect_bottomFieldID); 195} 196 197void GraphicsJNI::set_jrect(JNIEnv* env, jobject obj, int L, int T, int R, int B) 198{ 199 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 200 201 env->SetIntField(obj, gRect_leftFieldID, L); 202 env->SetIntField(obj, gRect_topFieldID, T); 203 env->SetIntField(obj, gRect_rightFieldID, R); 204 env->SetIntField(obj, gRect_bottomFieldID, B); 205} 206 207SkIRect* GraphicsJNI::jrect_to_irect(JNIEnv* env, jobject obj, SkIRect* ir) 208{ 209 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 210 211 ir->set(env->GetIntField(obj, gRect_leftFieldID), 212 env->GetIntField(obj, gRect_topFieldID), 213 env->GetIntField(obj, gRect_rightFieldID), 214 env->GetIntField(obj, gRect_bottomFieldID)); 215 return ir; 216} 217 218void GraphicsJNI::irect_to_jrect(const SkIRect& ir, JNIEnv* env, jobject obj) 219{ 220 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 221 222 env->SetIntField(obj, gRect_leftFieldID, ir.fLeft); 223 env->SetIntField(obj, gRect_topFieldID, ir.fTop); 224 env->SetIntField(obj, gRect_rightFieldID, ir.fRight); 225 env->SetIntField(obj, gRect_bottomFieldID, ir.fBottom); 226} 227 228SkRect* GraphicsJNI::jrectf_to_rect(JNIEnv* env, jobject obj, SkRect* r) 229{ 230 SkASSERT(env->IsInstanceOf(obj, gRectF_class)); 231 232 r->set(env->GetFloatField(obj, gRectF_leftFieldID), 233 env->GetFloatField(obj, gRectF_topFieldID), 234 env->GetFloatField(obj, gRectF_rightFieldID), 235 env->GetFloatField(obj, gRectF_bottomFieldID)); 236 return r; 237} 238 239SkRect* GraphicsJNI::jrect_to_rect(JNIEnv* env, jobject obj, SkRect* r) 240{ 241 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 242 243 r->set(SkIntToScalar(env->GetIntField(obj, gRect_leftFieldID)), 244 SkIntToScalar(env->GetIntField(obj, gRect_topFieldID)), 245 SkIntToScalar(env->GetIntField(obj, gRect_rightFieldID)), 246 SkIntToScalar(env->GetIntField(obj, gRect_bottomFieldID))); 247 return r; 248} 249 250void GraphicsJNI::rect_to_jrectf(const SkRect& r, JNIEnv* env, jobject obj) 251{ 252 SkASSERT(env->IsInstanceOf(obj, gRectF_class)); 253 254 env->SetFloatField(obj, gRectF_leftFieldID, SkScalarToFloat(r.fLeft)); 255 env->SetFloatField(obj, gRectF_topFieldID, SkScalarToFloat(r.fTop)); 256 env->SetFloatField(obj, gRectF_rightFieldID, SkScalarToFloat(r.fRight)); 257 env->SetFloatField(obj, gRectF_bottomFieldID, SkScalarToFloat(r.fBottom)); 258} 259 260SkIPoint* GraphicsJNI::jpoint_to_ipoint(JNIEnv* env, jobject obj, SkIPoint* point) 261{ 262 SkASSERT(env->IsInstanceOf(obj, gPoint_class)); 263 264 point->set(env->GetIntField(obj, gPoint_xFieldID), 265 env->GetIntField(obj, gPoint_yFieldID)); 266 return point; 267} 268 269void GraphicsJNI::ipoint_to_jpoint(const SkIPoint& ir, JNIEnv* env, jobject obj) 270{ 271 SkASSERT(env->IsInstanceOf(obj, gPoint_class)); 272 273 env->SetIntField(obj, gPoint_xFieldID, ir.fX); 274 env->SetIntField(obj, gPoint_yFieldID, ir.fY); 275} 276 277SkPoint* GraphicsJNI::jpointf_to_point(JNIEnv* env, jobject obj, SkPoint* point) 278{ 279 SkASSERT(env->IsInstanceOf(obj, gPointF_class)); 280 281 point->set(env->GetIntField(obj, gPointF_xFieldID), 282 env->GetIntField(obj, gPointF_yFieldID)); 283 return point; 284} 285 286void GraphicsJNI::point_to_jpointf(const SkPoint& r, JNIEnv* env, jobject obj) 287{ 288 SkASSERT(env->IsInstanceOf(obj, gPointF_class)); 289 290 env->SetFloatField(obj, gPointF_xFieldID, SkScalarToFloat(r.fX)); 291 env->SetFloatField(obj, gPointF_yFieldID, SkScalarToFloat(r.fY)); 292} 293 294SkBitmap* GraphicsJNI::getNativeBitmap(JNIEnv* env, jobject bitmap) { 295 SkASSERT(env); 296 SkASSERT(bitmap); 297 SkASSERT(env->IsInstanceOf(bitmap, gBitmap_class)); 298 jlong bitmapHandle = env->GetLongField(bitmap, gBitmap_nativeInstanceID); 299 SkBitmap* b = reinterpret_cast<SkBitmap*>(bitmapHandle); 300 SkASSERT(b); 301 return b; 302} 303 304SkBitmap::Config GraphicsJNI::getNativeBitmapConfig(JNIEnv* env, 305 jobject jconfig) { 306 SkASSERT(env); 307 if (NULL == jconfig) { 308 return SkBitmap::kNo_Config; 309 } 310 SkASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class)); 311 int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID); 312 if (c < 0 || c >= SkBitmap::kConfigCount) { 313 c = SkBitmap::kNo_Config; 314 } 315 return static_cast<SkBitmap::Config>(c); 316} 317 318SkCanvas* GraphicsJNI::getNativeCanvas(JNIEnv* env, jobject canvas) { 319 SkASSERT(env); 320 SkASSERT(canvas); 321 SkASSERT(env->IsInstanceOf(canvas, gCanvas_class)); 322 jlong canvasHandle = env->GetLongField(canvas, gCanvas_nativeInstanceID); 323 SkCanvas* c = reinterpret_cast<SkCanvas*>(canvasHandle); 324 SkASSERT(c); 325 return c; 326} 327 328SkPaint* GraphicsJNI::getNativePaint(JNIEnv* env, jobject paint) { 329 SkASSERT(env); 330 SkASSERT(paint); 331 SkASSERT(env->IsInstanceOf(paint, gPaint_class)); 332 jlong paintHandle = env->GetLongField(paint, gPaint_nativeInstanceID); 333 SkPaint* p = reinterpret_cast<SkPaint*>(paintHandle); 334 SkASSERT(p); 335 return p; 336} 337 338android::TypefaceImpl* GraphicsJNI::getNativeTypeface(JNIEnv* env, jobject paint) { 339 SkASSERT(env); 340 SkASSERT(paint); 341 SkASSERT(env->IsInstanceOf(paint, gPaint_class)); 342 jlong typefaceHandle = env->GetLongField(paint, gPaint_nativeTypefaceID); 343 android::TypefaceImpl* p = reinterpret_cast<android::TypefaceImpl*>(typefaceHandle); 344 SkASSERT(p); 345 return p; 346} 347 348SkPicture* GraphicsJNI::getNativePicture(JNIEnv* env, jobject picture) 349{ 350 SkASSERT(env); 351 SkASSERT(picture); 352 SkASSERT(env->IsInstanceOf(picture, gPicture_class)); 353 jlong pictureHandle = env->GetLongField(picture, gPicture_nativeInstanceID); 354 SkPicture* p = reinterpret_cast<SkPicture*>(pictureHandle); 355 SkASSERT(p); 356 return p; 357} 358 359SkRegion* GraphicsJNI::getNativeRegion(JNIEnv* env, jobject region) 360{ 361 SkASSERT(env); 362 SkASSERT(region); 363 SkASSERT(env->IsInstanceOf(region, gRegion_class)); 364 jlong regionHandle = env->GetLongField(region, gRegion_nativeInstanceID); 365 SkRegion* r = reinterpret_cast<SkRegion*>(regionHandle); 366 SkASSERT(r); 367 return r; 368} 369 370/////////////////////////////////////////////////////////////////////////////////////////// 371 372// Assert that bitmap's SkAlphaType is consistent with isPremultiplied. 373static void assert_premultiplied(const SkBitmap& bitmap, bool isPremultiplied) { 374 // kOpaque_SkAlphaType and kIgnore_SkAlphaType mean that isPremultiplied is 375 // irrelevant. This just tests to ensure that the SkAlphaType is not 376 // opposite of isPremultiplied. 377 if (isPremultiplied) { 378 SkASSERT(bitmap.alphaType() != kUnpremul_SkAlphaType); 379 } else { 380 SkASSERT(bitmap.alphaType() != kPremul_SkAlphaType); 381 } 382} 383 384jobject GraphicsJNI::createBitmap(JNIEnv* env, SkBitmap* bitmap, jbyteArray buffer, 385 int bitmapCreateFlags, jbyteArray ninepatch, jintArray layoutbounds, int density) 386{ 387 SkASSERT(bitmap); 388 SkASSERT(bitmap->pixelRef()); 389 bool isMutable = bitmapCreateFlags & kBitmapCreateFlag_Mutable; 390 bool isPremultiplied = bitmapCreateFlags & kBitmapCreateFlag_Premultiplied; 391 392 // The caller needs to have already set the alpha type properly, so the 393 // native SkBitmap stays in sync with the Java Bitmap. 394 assert_premultiplied(*bitmap, isPremultiplied); 395 396 jobject obj = env->NewObject(gBitmap_class, gBitmap_constructorMethodID, 397 reinterpret_cast<jlong>(bitmap), buffer, 398 bitmap->width(), bitmap->height(), density, isMutable, isPremultiplied, 399 ninepatch, layoutbounds); 400 hasException(env); // For the side effect of logging. 401 return obj; 402} 403 404jobject GraphicsJNI::createBitmap(JNIEnv* env, SkBitmap* bitmap, int bitmapCreateFlags, 405 jbyteArray ninepatch, int density) 406{ 407 return createBitmap(env, bitmap, NULL, bitmapCreateFlags, ninepatch, NULL, density); 408} 409 410void GraphicsJNI::reinitBitmap(JNIEnv* env, jobject javaBitmap, SkBitmap* bitmap, 411 bool isPremultiplied) 412{ 413 // The caller needs to have already set the alpha type properly, so the 414 // native SkBitmap stays in sync with the Java Bitmap. 415 assert_premultiplied(*bitmap, isPremultiplied); 416 417 env->CallVoidMethod(javaBitmap, gBitmap_reinitMethodID, 418 bitmap->width(), bitmap->height(), isPremultiplied); 419} 420 421int GraphicsJNI::getBitmapAllocationByteCount(JNIEnv* env, jobject javaBitmap) 422{ 423 return env->CallIntMethod(javaBitmap, gBitmap_getAllocationByteCountMethodID); 424} 425 426jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap) 427{ 428 SkASSERT(bitmap != NULL); 429 430 jobject obj = env->NewObject(gBitmapRegionDecoder_class, 431 gBitmapRegionDecoder_constructorMethodID, 432 reinterpret_cast<jlong>(bitmap)); 433 hasException(env); // For the side effect of logging. 434 return obj; 435} 436 437jobject GraphicsJNI::createRegion(JNIEnv* env, SkRegion* region) 438{ 439 SkASSERT(region != NULL); 440 jobject obj = env->NewObject(gRegion_class, gRegion_constructorMethodID, 441 reinterpret_cast<jlong>(region), 0); 442 hasException(env); // For the side effect of logging. 443 return obj; 444} 445 446static JNIEnv* vm2env(JavaVM* vm) 447{ 448 JNIEnv* env = NULL; 449 if (vm->GetEnv((void**)&env, JNI_VERSION_1_4) != JNI_OK || NULL == env) 450 { 451 SkDebugf("------- [%p] vm->GetEnv() failed\n", vm); 452 sk_throw(); 453 } 454 return env; 455} 456 457/////////////////////////////////////////////////////////////////////////////// 458 459AndroidPixelRef::AndroidPixelRef(JNIEnv* env, const SkImageInfo& info, void* storage, 460 size_t rowBytes, jbyteArray storageObj, SkColorTable* ctable) : 461 SkMallocPixelRef(info, storage, rowBytes, ctable, (storageObj == NULL)), 462 fWrappedPixelRef(NULL) { 463 SkASSERT(storage); 464 SkASSERT(env); 465 466 if (env->GetJavaVM(&fVM) != JNI_OK) { 467 SkDebugf("------ [%p] env->GetJavaVM failed\n", env); 468 sk_throw(); 469 } 470 fStorageObj = storageObj; 471 fHasGlobalRef = false; 472 fGlobalRefCnt = 0; 473 474 // If storageObj is NULL, the memory was NOT allocated on the Java heap 475 fOnJavaHeap = (storageObj != NULL); 476 477} 478 479AndroidPixelRef::AndroidPixelRef(AndroidPixelRef& wrappedPixelRef, const SkImageInfo& info, 480 size_t rowBytes, SkColorTable* ctable) : 481 SkMallocPixelRef(info, wrappedPixelRef.getAddr(), rowBytes, ctable, false), 482 fWrappedPixelRef(wrappedPixelRef.fWrappedPixelRef ? 483 wrappedPixelRef.fWrappedPixelRef : &wrappedPixelRef) 484{ 485 SkASSERT(fWrappedPixelRef); 486 SkSafeRef(fWrappedPixelRef); 487 488 // don't need to initialize these, as all the relevant logic delegates to the wrapped ref 489 fStorageObj = NULL; 490 fHasGlobalRef = false; 491 fGlobalRefCnt = 0; 492 fOnJavaHeap = false; 493} 494 495AndroidPixelRef::~AndroidPixelRef() { 496 if (fWrappedPixelRef) { 497 SkSafeUnref(fWrappedPixelRef); 498 } else if (fOnJavaHeap) { 499 JNIEnv* env = vm2env(fVM); 500 501 if (fStorageObj && fHasGlobalRef) { 502 env->DeleteGlobalRef(fStorageObj); 503 } 504 fStorageObj = NULL; 505 } 506} 507jbyteArray AndroidPixelRef::getStorageObj() { 508 if (fWrappedPixelRef) { 509 return fWrappedPixelRef->fStorageObj; 510 } 511 return fStorageObj; 512} 513 514void AndroidPixelRef::setLocalJNIRef(jbyteArray arr) { 515 if (fWrappedPixelRef) { 516 // delegate java obj management to the wrapped ref 517 fWrappedPixelRef->setLocalJNIRef(arr); 518 } else if (!fHasGlobalRef) { 519 fStorageObj = arr; 520 } 521} 522 523void AndroidPixelRef::globalRef(void* localref) { 524 if (fWrappedPixelRef) { 525 // delegate java obj management to the wrapped ref 526 fWrappedPixelRef->globalRef(localref); 527 528 // Note: we only ref and unref the wrapped AndroidPixelRef so that 529 // bitmap->pixelRef()->globalRef() and globalUnref() can be used in a pair, even if 530 // the bitmap has its underlying AndroidPixelRef swapped out/wrapped 531 return; 532 } 533 if (fOnJavaHeap && sk_atomic_inc(&fGlobalRefCnt) == 0) { 534 JNIEnv *env = vm2env(fVM); 535 536 // If JNI ref was passed, it is always used 537 if (localref) fStorageObj = (jbyteArray) localref; 538 539 if (fStorageObj == NULL) { 540 SkDebugf("No valid local ref to create a JNI global ref\n"); 541 sk_throw(); 542 } 543 if (fHasGlobalRef) { 544 // This should never happen 545 SkDebugf("Already holding a JNI global ref"); 546 sk_throw(); 547 } 548 549 fStorageObj = (jbyteArray) env->NewGlobalRef(fStorageObj); 550 // TODO: Check for failure here 551 fHasGlobalRef = true; 552 } 553 ref(); 554} 555 556void AndroidPixelRef::globalUnref() { 557 if (fWrappedPixelRef) { 558 // delegate java obj management to the wrapped ref 559 fWrappedPixelRef->globalUnref(); 560 return; 561 } 562 if (fOnJavaHeap && sk_atomic_dec(&fGlobalRefCnt) == 1) { 563 JNIEnv *env = vm2env(fVM); 564 if (!fHasGlobalRef) { 565 SkDebugf("We don't have a global ref!"); 566 sk_throw(); 567 } 568 env->DeleteGlobalRef(fStorageObj); 569 fStorageObj = NULL; 570 fHasGlobalRef = false; 571 } 572 unref(); 573} 574 575/////////////////////////////////////////////////////////////////////////////// 576 577jbyteArray GraphicsJNI::allocateJavaPixelRef(JNIEnv* env, SkBitmap* bitmap, 578 SkColorTable* ctable) { 579 const SkImageInfo& info = bitmap->info(); 580 if (info.fColorType == kUnknown_SkColorType) { 581 doThrowIAE(env, "unknown bitmap configuration"); 582 return NULL; 583 } 584 585 const int64_t size64 = info.getSafeSize64(bitmap->rowBytes()); 586 if (!sk_64_isS32(size64)) { 587 doThrowIAE(env, "bitmap size exceeds 32bits"); 588 return NULL; 589 } 590 const size_t size = sk_64_asS32(size64); 591 SkASSERT(size == info.getSafeSize(bitmap->rowBytes())); 592 593 jbyteArray arrayObj = (jbyteArray) env->CallObjectMethod(gVMRuntime, 594 gVMRuntime_newNonMovableArray, 595 gByte_class, size); 596 if (env->ExceptionCheck() != 0) { 597 return NULL; 598 } 599 SkASSERT(arrayObj); 600 jbyte* addr = (jbyte*) env->CallLongMethod(gVMRuntime, gVMRuntime_addressOf, arrayObj); 601 if (env->ExceptionCheck() != 0) { 602 return NULL; 603 } 604 SkASSERT(addr); 605 SkPixelRef* pr = new AndroidPixelRef(env, info, (void*) addr, 606 bitmap->rowBytes(), arrayObj, ctable); 607 bitmap->setPixelRef(pr)->unref(); 608 // since we're already allocated, we lockPixels right away 609 // HeapAllocator behaves this way too 610 bitmap->lockPixels(); 611 612 return arrayObj; 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 636JavaHeapBitmapRef::JavaHeapBitmapRef(JNIEnv* env, SkBitmap* nativeBitmap, jbyteArray buffer) { 637 fEnv = env; 638 fNativeBitmap = nativeBitmap; 639 fBuffer = buffer; 640 641 // If the buffer is NULL, the backing memory wasn't allocated on the Java heap 642 if (fBuffer) { 643 ((AndroidPixelRef*) fNativeBitmap->pixelRef())->setLocalJNIRef(fBuffer); 644 } 645} 646 647JavaHeapBitmapRef::~JavaHeapBitmapRef() { 648 if (fBuffer) { 649 ((AndroidPixelRef*) fNativeBitmap->pixelRef())->setLocalJNIRef(NULL); 650 } 651} 652 653//////////////////////////////////////////////////////////////////////////////// 654 655static jclass make_globalref(JNIEnv* env, const char classname[]) 656{ 657 jclass c = env->FindClass(classname); 658 SkASSERT(c); 659 return (jclass) env->NewGlobalRef(c); 660} 661 662static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz, 663 const char fieldname[], const char type[]) 664{ 665 jfieldID id = env->GetFieldID(clazz, fieldname, type); 666 SkASSERT(id); 667 return id; 668} 669 670int register_android_graphics_Graphics(JNIEnv* env) 671{ 672 jmethodID m; 673 jclass c; 674 675 gRect_class = make_globalref(env, "android/graphics/Rect"); 676 gRect_leftFieldID = getFieldIDCheck(env, gRect_class, "left", "I"); 677 gRect_topFieldID = getFieldIDCheck(env, gRect_class, "top", "I"); 678 gRect_rightFieldID = getFieldIDCheck(env, gRect_class, "right", "I"); 679 gRect_bottomFieldID = getFieldIDCheck(env, gRect_class, "bottom", "I"); 680 681 gRectF_class = make_globalref(env, "android/graphics/RectF"); 682 gRectF_leftFieldID = getFieldIDCheck(env, gRectF_class, "left", "F"); 683 gRectF_topFieldID = getFieldIDCheck(env, gRectF_class, "top", "F"); 684 gRectF_rightFieldID = getFieldIDCheck(env, gRectF_class, "right", "F"); 685 gRectF_bottomFieldID = getFieldIDCheck(env, gRectF_class, "bottom", "F"); 686 687 gPoint_class = make_globalref(env, "android/graphics/Point"); 688 gPoint_xFieldID = getFieldIDCheck(env, gPoint_class, "x", "I"); 689 gPoint_yFieldID = getFieldIDCheck(env, gPoint_class, "y", "I"); 690 691 gPointF_class = make_globalref(env, "android/graphics/PointF"); 692 gPointF_xFieldID = getFieldIDCheck(env, gPointF_class, "x", "F"); 693 gPointF_yFieldID = getFieldIDCheck(env, gPointF_class, "y", "F"); 694 695 gBitmap_class = make_globalref(env, "android/graphics/Bitmap"); 696 gBitmap_nativeInstanceID = getFieldIDCheck(env, gBitmap_class, "mNativeBitmap", "J"); 697 gBitmap_constructorMethodID = env->GetMethodID(gBitmap_class, "<init>", "(J[BIIIZZ[B[I)V"); 698 gBitmap_reinitMethodID = env->GetMethodID(gBitmap_class, "reinit", "(IIZ)V"); 699 gBitmap_getAllocationByteCountMethodID = env->GetMethodID(gBitmap_class, "getAllocationByteCount", "()I"); 700 gBitmapRegionDecoder_class = make_globalref(env, "android/graphics/BitmapRegionDecoder"); 701 gBitmapRegionDecoder_constructorMethodID = env->GetMethodID(gBitmapRegionDecoder_class, "<init>", "(J)V"); 702 703 gBitmapConfig_class = make_globalref(env, "android/graphics/Bitmap$Config"); 704 gBitmapConfig_nativeInstanceID = getFieldIDCheck(env, gBitmapConfig_class, 705 "nativeInt", "I"); 706 707 gCanvas_class = make_globalref(env, "android/graphics/Canvas"); 708 gCanvas_nativeInstanceID = getFieldIDCheck(env, gCanvas_class, "mNativeCanvas", "J"); 709 710 gPaint_class = make_globalref(env, "android/graphics/Paint"); 711 gPaint_nativeInstanceID = getFieldIDCheck(env, gPaint_class, "mNativePaint", "J"); 712 gPaint_nativeTypefaceID = getFieldIDCheck(env, gPaint_class, "mNativeTypeface", "J"); 713 714 gPicture_class = make_globalref(env, "android/graphics/Picture"); 715 gPicture_nativeInstanceID = getFieldIDCheck(env, gPicture_class, "mNativePicture", "J"); 716 717 gRegion_class = make_globalref(env, "android/graphics/Region"); 718 gRegion_nativeInstanceID = getFieldIDCheck(env, gRegion_class, "mNativeRegion", "J"); 719 gRegion_constructorMethodID = env->GetMethodID(gRegion_class, "<init>", 720 "(JI)V"); 721 722 c = env->FindClass("java/lang/Byte"); 723 gByte_class = (jclass) env->NewGlobalRef( 724 env->GetStaticObjectField(c, env->GetStaticFieldID(c, "TYPE", "Ljava/lang/Class;"))); 725 726 gVMRuntime_class = make_globalref(env, "dalvik/system/VMRuntime"); 727 m = env->GetStaticMethodID(gVMRuntime_class, "getRuntime", "()Ldalvik/system/VMRuntime;"); 728 gVMRuntime = env->NewGlobalRef(env->CallStaticObjectMethod(gVMRuntime_class, m)); 729 gVMRuntime_newNonMovableArray = env->GetMethodID(gVMRuntime_class, "newNonMovableArray", 730 "(Ljava/lang/Class;I)Ljava/lang/Object;"); 731 gVMRuntime_addressOf = env->GetMethodID(gVMRuntime_class, "addressOf", "(Ljava/lang/Object;)J"); 732 733 return 0; 734} 735