Graphics.cpp revision 580ff8142b7d0455d0d41ee77572b4f55dd935f0
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} 293 294// This enum must keep these int values, to match the int values 295// in the java Bitmap.Config enum. 296enum LegacyBitmapConfig { 297 kNo_LegacyBitmapConfig = 0, 298 kA8_LegacyBitmapConfig = 1, 299 kIndex8_LegacyBitmapConfig = 2, 300 kRGB_565_LegacyBitmapConfig = 3, 301 kARGB_4444_LegacyBitmapConfig = 4, 302 kARGB_8888_LegacyBitmapConfig = 5, 303 304 kLastEnum_LegacyBitmapConfig = kARGB_8888_LegacyBitmapConfig 305}; 306 307jint GraphicsJNI::colorTypeToLegacyBitmapConfig(SkColorType colorType) { 308 switch (colorType) { 309 case kN32_SkColorType: 310 return kARGB_8888_LegacyBitmapConfig; 311 case kARGB_4444_SkColorType: 312 return kARGB_4444_LegacyBitmapConfig; 313 case kRGB_565_SkColorType: 314 return kRGB_565_LegacyBitmapConfig; 315 case kIndex_8_SkColorType: 316 return kIndex8_LegacyBitmapConfig; 317 case kAlpha_8_SkColorType: 318 return kA8_LegacyBitmapConfig; 319 case kUnknown_SkColorType: 320 default: 321 break; 322 } 323 return kNo_LegacyBitmapConfig; 324} 325 326SkColorType GraphicsJNI::legacyBitmapConfigToColorType(jint legacyConfig) { 327 const uint8_t gConfig2ColorType[] = { 328 kUnknown_SkColorType, 329 kAlpha_8_SkColorType, 330 kIndex_8_SkColorType, 331 kRGB_565_SkColorType, 332 kARGB_4444_SkColorType, 333 kN32_SkColorType 334 }; 335 336 if (legacyConfig < 0 || legacyConfig > kLastEnum_LegacyBitmapConfig) { 337 legacyConfig = kNo_LegacyBitmapConfig; 338 } 339 return static_cast<SkColorType>(gConfig2ColorType[legacyConfig]); 340} 341 342SkBitmap* GraphicsJNI::getNativeBitmap(JNIEnv* env, jobject bitmap) { 343 SkASSERT(env); 344 SkASSERT(bitmap); 345 SkASSERT(env->IsInstanceOf(bitmap, gBitmap_class)); 346 jlong bitmapHandle = env->GetLongField(bitmap, gBitmap_nativeInstanceID); 347 SkBitmap* b = reinterpret_cast<SkBitmap*>(bitmapHandle); 348 SkASSERT(b); 349 return b; 350} 351 352SkColorType GraphicsJNI::getNativeBitmapColorType(JNIEnv* env, jobject jconfig) { 353 SkASSERT(env); 354 if (NULL == jconfig) { 355 return kUnknown_SkColorType; 356 } 357 SkASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class)); 358 int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID); 359 return legacyBitmapConfigToColorType(c); 360} 361 362SkCanvas* GraphicsJNI::getNativeCanvas(JNIEnv* env, jobject canvas) { 363 SkASSERT(env); 364 SkASSERT(canvas); 365 SkASSERT(env->IsInstanceOf(canvas, gCanvas_class)); 366 jlong canvasHandle = env->GetLongField(canvas, gCanvas_nativeInstanceID); 367 SkCanvas* c = getNativeCanvas(canvasHandle); 368 SkASSERT(c); 369 return c; 370} 371 372SkPaint* GraphicsJNI::getNativePaint(JNIEnv* env, jobject paint) { 373 SkASSERT(env); 374 SkASSERT(paint); 375 SkASSERT(env->IsInstanceOf(paint, gPaint_class)); 376 jlong paintHandle = env->GetLongField(paint, gPaint_nativeInstanceID); 377 SkPaint* p = reinterpret_cast<SkPaint*>(paintHandle); 378 SkASSERT(p); 379 return p; 380} 381 382android::TypefaceImpl* GraphicsJNI::getNativeTypeface(JNIEnv* env, jobject paint) { 383 SkASSERT(env); 384 SkASSERT(paint); 385 SkASSERT(env->IsInstanceOf(paint, gPaint_class)); 386 jlong typefaceHandle = env->GetLongField(paint, gPaint_nativeTypefaceID); 387 android::TypefaceImpl* p = reinterpret_cast<android::TypefaceImpl*>(typefaceHandle); 388 SkASSERT(p); 389 return p; 390} 391 392SkRegion* GraphicsJNI::getNativeRegion(JNIEnv* env, jobject region) 393{ 394 SkASSERT(env); 395 SkASSERT(region); 396 SkASSERT(env->IsInstanceOf(region, gRegion_class)); 397 jlong regionHandle = env->GetLongField(region, gRegion_nativeInstanceID); 398 SkRegion* r = reinterpret_cast<SkRegion*>(regionHandle); 399 SkASSERT(r); 400 return r; 401} 402 403/////////////////////////////////////////////////////////////////////////////////////////// 404 405// Assert that bitmap's SkAlphaType is consistent with isPremultiplied. 406static void assert_premultiplied(const SkBitmap& bitmap, bool isPremultiplied) { 407 // kOpaque_SkAlphaType and kIgnore_SkAlphaType mean that isPremultiplied is 408 // irrelevant. This just tests to ensure that the SkAlphaType is not 409 // opposite of isPremultiplied. 410 if (isPremultiplied) { 411 SkASSERT(bitmap.alphaType() != kUnpremul_SkAlphaType); 412 } else { 413 SkASSERT(bitmap.alphaType() != kPremul_SkAlphaType); 414 } 415} 416 417jobject GraphicsJNI::createBitmap(JNIEnv* env, SkBitmap* bitmap, jbyteArray buffer, 418 int bitmapCreateFlags, jbyteArray ninePatchChunk, jobject ninePatchInsets, int density) 419{ 420 SkASSERT(bitmap); 421 SkASSERT(bitmap->pixelRef()); 422 bool isMutable = bitmapCreateFlags & kBitmapCreateFlag_Mutable; 423 bool isPremultiplied = bitmapCreateFlags & kBitmapCreateFlag_Premultiplied; 424 425 // The caller needs to have already set the alpha type properly, so the 426 // native SkBitmap stays in sync with the Java Bitmap. 427 assert_premultiplied(*bitmap, isPremultiplied); 428 429 jobject obj = env->NewObject(gBitmap_class, gBitmap_constructorMethodID, 430 reinterpret_cast<jlong>(bitmap), buffer, 431 bitmap->width(), bitmap->height(), density, isMutable, isPremultiplied, 432 ninePatchChunk, ninePatchInsets); 433 hasException(env); // For the side effect of logging. 434 return obj; 435} 436 437void GraphicsJNI::reinitBitmap(JNIEnv* env, jobject javaBitmap, SkBitmap* bitmap, 438 bool isPremultiplied) 439{ 440 // The caller needs to have already set the alpha type properly, so the 441 // native SkBitmap stays in sync with the Java Bitmap. 442 assert_premultiplied(*bitmap, isPremultiplied); 443 444 env->CallVoidMethod(javaBitmap, gBitmap_reinitMethodID, 445 bitmap->width(), bitmap->height(), isPremultiplied); 446} 447 448int GraphicsJNI::getBitmapAllocationByteCount(JNIEnv* env, jobject javaBitmap) 449{ 450 return env->CallIntMethod(javaBitmap, gBitmap_getAllocationByteCountMethodID); 451} 452 453jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap) 454{ 455 SkASSERT(bitmap != NULL); 456 457 jobject obj = env->NewObject(gBitmapRegionDecoder_class, 458 gBitmapRegionDecoder_constructorMethodID, 459 reinterpret_cast<jlong>(bitmap)); 460 hasException(env); // For the side effect of logging. 461 return obj; 462} 463 464jobject GraphicsJNI::createRegion(JNIEnv* env, SkRegion* region) 465{ 466 SkASSERT(region != NULL); 467 jobject obj = env->NewObject(gRegion_class, gRegion_constructorMethodID, 468 reinterpret_cast<jlong>(region), 0); 469 hasException(env); // For the side effect of logging. 470 return obj; 471} 472 473static JNIEnv* vm2env(JavaVM* vm) 474{ 475 JNIEnv* env = NULL; 476 if (vm->GetEnv((void**)&env, JNI_VERSION_1_4) != JNI_OK || NULL == env) 477 { 478 SkDebugf("------- [%p] vm->GetEnv() failed\n", vm); 479 sk_throw(); 480 } 481 return env; 482} 483 484/////////////////////////////////////////////////////////////////////////////// 485 486AndroidPixelRef::AndroidPixelRef(JNIEnv* env, const SkImageInfo& info, void* storage, 487 size_t rowBytes, jbyteArray storageObj, SkColorTable* ctable) : 488 SkMallocPixelRef(info, storage, rowBytes, ctable, (storageObj == NULL)), 489 fWrappedPixelRef(NULL) { 490 SkASSERT(storage); 491 SkASSERT(env); 492 493 if (env->GetJavaVM(&fVM) != JNI_OK) { 494 SkDebugf("------ [%p] env->GetJavaVM failed\n", env); 495 sk_throw(); 496 } 497 fStorageObj = storageObj; 498 fHasGlobalRef = false; 499 fGlobalRefCnt = 0; 500 501 // If storageObj is NULL, the memory was NOT allocated on the Java heap 502 fOnJavaHeap = (storageObj != NULL); 503 504} 505 506AndroidPixelRef::AndroidPixelRef(AndroidPixelRef& wrappedPixelRef, const SkImageInfo& info, 507 size_t rowBytes, SkColorTable* ctable) : 508 SkMallocPixelRef(info, wrappedPixelRef.getAddr(), rowBytes, ctable, false), 509 fWrappedPixelRef(wrappedPixelRef.fWrappedPixelRef ? 510 wrappedPixelRef.fWrappedPixelRef : &wrappedPixelRef) 511{ 512 SkASSERT(fWrappedPixelRef); 513 SkSafeRef(fWrappedPixelRef); 514 515 // don't need to initialize these, as all the relevant logic delegates to the wrapped ref 516 fStorageObj = NULL; 517 fHasGlobalRef = false; 518 fGlobalRefCnt = 0; 519 fOnJavaHeap = false; 520} 521 522AndroidPixelRef::~AndroidPixelRef() { 523 if (fWrappedPixelRef) { 524 SkSafeUnref(fWrappedPixelRef); 525 } else if (fOnJavaHeap) { 526 JNIEnv* env = vm2env(fVM); 527 528 if (fStorageObj && fHasGlobalRef) { 529 env->DeleteGlobalRef(fStorageObj); 530 } 531 fStorageObj = NULL; 532 } 533} 534jbyteArray AndroidPixelRef::getStorageObj() { 535 if (fWrappedPixelRef) { 536 return fWrappedPixelRef->fStorageObj; 537 } 538 return fStorageObj; 539} 540 541void AndroidPixelRef::setLocalJNIRef(jbyteArray arr) { 542 if (fWrappedPixelRef) { 543 // delegate java obj management to the wrapped ref 544 fWrappedPixelRef->setLocalJNIRef(arr); 545 } else if (!fHasGlobalRef) { 546 fStorageObj = arr; 547 } 548} 549 550void AndroidPixelRef::globalRef(void* localref) { 551 if (fWrappedPixelRef) { 552 // delegate java obj management to the wrapped ref 553 fWrappedPixelRef->globalRef(localref); 554 555 // Note: we only ref and unref the wrapped AndroidPixelRef so that 556 // bitmap->pixelRef()->globalRef() and globalUnref() can be used in a pair, even if 557 // the bitmap has its underlying AndroidPixelRef swapped out/wrapped 558 return; 559 } 560 if (fOnJavaHeap && sk_atomic_inc(&fGlobalRefCnt) == 0) { 561 JNIEnv *env = vm2env(fVM); 562 563 // If JNI ref was passed, it is always used 564 if (localref) fStorageObj = (jbyteArray) localref; 565 566 if (fStorageObj == NULL) { 567 SkDebugf("No valid local ref to create a JNI global ref\n"); 568 sk_throw(); 569 } 570 if (fHasGlobalRef) { 571 // This should never happen 572 SkDebugf("Already holding a JNI global ref"); 573 sk_throw(); 574 } 575 576 fStorageObj = (jbyteArray) env->NewGlobalRef(fStorageObj); 577 // TODO: Check for failure here 578 fHasGlobalRef = true; 579 } 580 ref(); 581} 582 583void AndroidPixelRef::globalUnref() { 584 if (fWrappedPixelRef) { 585 // delegate java obj management to the wrapped ref 586 fWrappedPixelRef->globalUnref(); 587 return; 588 } 589 if (fOnJavaHeap && sk_atomic_dec(&fGlobalRefCnt) == 1) { 590 JNIEnv *env = vm2env(fVM); 591 if (!fHasGlobalRef) { 592 SkDebugf("We don't have a global ref!"); 593 sk_throw(); 594 } 595 env->DeleteGlobalRef(fStorageObj); 596 fStorageObj = NULL; 597 fHasGlobalRef = false; 598 } 599 unref(); 600} 601 602/////////////////////////////////////////////////////////////////////////////// 603 604jbyteArray GraphicsJNI::allocateJavaPixelRef(JNIEnv* env, SkBitmap* bitmap, 605 SkColorTable* ctable) { 606 const SkImageInfo& info = bitmap->info(); 607 if (info.fColorType == kUnknown_SkColorType) { 608 doThrowIAE(env, "unknown bitmap configuration"); 609 return NULL; 610 } 611 612 const size_t size = bitmap->getSize(); 613 jbyteArray arrayObj = (jbyteArray) env->CallObjectMethod(gVMRuntime, 614 gVMRuntime_newNonMovableArray, 615 gByte_class, size); 616 if (env->ExceptionCheck() != 0) { 617 return NULL; 618 } 619 SkASSERT(arrayObj); 620 jbyte* addr = (jbyte*) env->CallLongMethod(gVMRuntime, gVMRuntime_addressOf, arrayObj); 621 if (env->ExceptionCheck() != 0) { 622 return NULL; 623 } 624 SkASSERT(addr); 625 SkPixelRef* pr = new AndroidPixelRef(env, info, (void*) addr, 626 bitmap->rowBytes(), arrayObj, ctable); 627 bitmap->setPixelRef(pr)->unref(); 628 // since we're already allocated, we lockPixels right away 629 // HeapAllocator behaves this way too 630 bitmap->lockPixels(); 631 632 return arrayObj; 633} 634 635/////////////////////////////////////////////////////////////////////////////// 636 637JavaPixelAllocator::JavaPixelAllocator(JNIEnv* env) 638 : fStorageObj(NULL), 639 fAllocCount(0) { 640 if (env->GetJavaVM(&fVM) != JNI_OK) { 641 SkDebugf("------ [%p] env->GetJavaVM failed\n", env); 642 sk_throw(); 643 } 644} 645 646bool JavaPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) { 647 JNIEnv* env = vm2env(fVM); 648 649 fStorageObj = GraphicsJNI::allocateJavaPixelRef(env, bitmap, ctable); 650 fAllocCount += 1; 651 return fStorageObj != NULL; 652} 653 654//////////////////////////////////////////////////////////////////////////////// 655 656JavaHeapBitmapRef::JavaHeapBitmapRef(JNIEnv* env, SkBitmap* nativeBitmap, jbyteArray buffer) { 657 fEnv = env; 658 fNativeBitmap = nativeBitmap; 659 fBuffer = buffer; 660 661 // If the buffer is NULL, the backing memory wasn't allocated on the Java heap 662 if (fBuffer) { 663 ((AndroidPixelRef*) fNativeBitmap->pixelRef())->setLocalJNIRef(fBuffer); 664 } 665} 666 667JavaHeapBitmapRef::~JavaHeapBitmapRef() { 668 if (fBuffer) { 669 ((AndroidPixelRef*) fNativeBitmap->pixelRef())->setLocalJNIRef(NULL); 670 } 671} 672 673//////////////////////////////////////////////////////////////////////////////// 674 675static jclass make_globalref(JNIEnv* env, const char classname[]) 676{ 677 jclass c = env->FindClass(classname); 678 SkASSERT(c); 679 return (jclass) env->NewGlobalRef(c); 680} 681 682static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz, 683 const char fieldname[], const char type[]) 684{ 685 jfieldID id = env->GetFieldID(clazz, fieldname, type); 686 SkASSERT(id); 687 return id; 688} 689 690int register_android_graphics_Graphics(JNIEnv* env) 691{ 692 jmethodID m; 693 jclass c; 694 695 gRect_class = make_globalref(env, "android/graphics/Rect"); 696 gRect_leftFieldID = getFieldIDCheck(env, gRect_class, "left", "I"); 697 gRect_topFieldID = getFieldIDCheck(env, gRect_class, "top", "I"); 698 gRect_rightFieldID = getFieldIDCheck(env, gRect_class, "right", "I"); 699 gRect_bottomFieldID = getFieldIDCheck(env, gRect_class, "bottom", "I"); 700 701 gRectF_class = make_globalref(env, "android/graphics/RectF"); 702 gRectF_leftFieldID = getFieldIDCheck(env, gRectF_class, "left", "F"); 703 gRectF_topFieldID = getFieldIDCheck(env, gRectF_class, "top", "F"); 704 gRectF_rightFieldID = getFieldIDCheck(env, gRectF_class, "right", "F"); 705 gRectF_bottomFieldID = getFieldIDCheck(env, gRectF_class, "bottom", "F"); 706 707 gPoint_class = make_globalref(env, "android/graphics/Point"); 708 gPoint_xFieldID = getFieldIDCheck(env, gPoint_class, "x", "I"); 709 gPoint_yFieldID = getFieldIDCheck(env, gPoint_class, "y", "I"); 710 711 gPointF_class = make_globalref(env, "android/graphics/PointF"); 712 gPointF_xFieldID = getFieldIDCheck(env, gPointF_class, "x", "F"); 713 gPointF_yFieldID = getFieldIDCheck(env, gPointF_class, "y", "F"); 714 715 gBitmap_class = make_globalref(env, "android/graphics/Bitmap"); 716 gBitmap_nativeInstanceID = getFieldIDCheck(env, gBitmap_class, "mNativeBitmap", "J"); 717 gBitmap_constructorMethodID = env->GetMethodID(gBitmap_class, "<init>", "(J[BIIIZZ[BLandroid/graphics/NinePatch$InsetStruct;)V"); 718 gBitmap_reinitMethodID = env->GetMethodID(gBitmap_class, "reinit", "(IIZ)V"); 719 gBitmap_getAllocationByteCountMethodID = env->GetMethodID(gBitmap_class, "getAllocationByteCount", "()I"); 720 gBitmapRegionDecoder_class = make_globalref(env, "android/graphics/BitmapRegionDecoder"); 721 gBitmapRegionDecoder_constructorMethodID = env->GetMethodID(gBitmapRegionDecoder_class, "<init>", "(J)V"); 722 723 gBitmapConfig_class = make_globalref(env, "android/graphics/Bitmap$Config"); 724 gBitmapConfig_nativeInstanceID = getFieldIDCheck(env, gBitmapConfig_class, 725 "nativeInt", "I"); 726 727 gCanvas_class = make_globalref(env, "android/graphics/Canvas"); 728 gCanvas_nativeInstanceID = getFieldIDCheck(env, gCanvas_class, "mNativeCanvasWrapper", "J"); 729 730 gPaint_class = make_globalref(env, "android/graphics/Paint"); 731 gPaint_nativeInstanceID = getFieldIDCheck(env, gPaint_class, "mNativePaint", "J"); 732 gPaint_nativeTypefaceID = getFieldIDCheck(env, gPaint_class, "mNativeTypeface", "J"); 733 734 gPicture_class = make_globalref(env, "android/graphics/Picture"); 735 gPicture_nativeInstanceID = getFieldIDCheck(env, gPicture_class, "mNativePicture", "J"); 736 737 gRegion_class = make_globalref(env, "android/graphics/Region"); 738 gRegion_nativeInstanceID = getFieldIDCheck(env, gRegion_class, "mNativeRegion", "J"); 739 gRegion_constructorMethodID = env->GetMethodID(gRegion_class, "<init>", 740 "(JI)V"); 741 742 c = env->FindClass("java/lang/Byte"); 743 gByte_class = (jclass) env->NewGlobalRef( 744 env->GetStaticObjectField(c, env->GetStaticFieldID(c, "TYPE", "Ljava/lang/Class;"))); 745 746 gVMRuntime_class = make_globalref(env, "dalvik/system/VMRuntime"); 747 m = env->GetStaticMethodID(gVMRuntime_class, "getRuntime", "()Ldalvik/system/VMRuntime;"); 748 gVMRuntime = env->NewGlobalRef(env->CallStaticObjectMethod(gVMRuntime_class, m)); 749 gVMRuntime_newNonMovableArray = env->GetMethodID(gVMRuntime_class, "newNonMovableArray", 750 "(Ljava/lang/Class;I)Ljava/lang/Object;"); 751 gVMRuntime_addressOf = env->GetMethodID(gVMRuntime_class, "addressOf", "(Ljava/lang/Object;)J"); 752 753 return 0; 754} 755