Graphics.cpp revision 4508218850faedea95371188da587b6734f5f3da
1#define LOG_TAG "GraphicsJNI" 2 3#include <unistd.h> 4#include <sys/mman.h> 5 6#include "jni.h" 7#include "JNIHelp.h" 8#include "GraphicsJNI.h" 9 10#include "SkCanvas.h" 11#include "SkDevice.h" 12#include "SkMath.h" 13#include "SkRegion.h" 14#include <android_runtime/AndroidRuntime.h> 15#include <cutils/ashmem.h> 16#include <hwui/Canvas.h> 17 18#include <Caches.h> 19#include <TextureCache.h> 20 21void doThrowNPE(JNIEnv* env) { 22 jniThrowNullPointerException(env, NULL); 23} 24 25void doThrowAIOOBE(JNIEnv* env) { 26 jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL); 27} 28 29void doThrowRE(JNIEnv* env, const char* msg) { 30 jniThrowRuntimeException(env, msg); 31} 32 33void doThrowIAE(JNIEnv* env, const char* msg) { 34 jniThrowException(env, "java/lang/IllegalArgumentException", msg); 35} 36 37void doThrowISE(JNIEnv* env, const char* msg) { 38 jniThrowException(env, "java/lang/IllegalStateException", msg); 39} 40 41void doThrowOOME(JNIEnv* env, const char* msg) { 42 jniThrowException(env, "java/lang/OutOfMemoryError", msg); 43} 44 45void doThrowIOE(JNIEnv* env, const char* msg) { 46 jniThrowException(env, "java/io/IOException", msg); 47} 48 49bool GraphicsJNI::hasException(JNIEnv *env) { 50 if (env->ExceptionCheck() != 0) { 51 ALOGE("*** Uncaught exception returned from Java call!\n"); 52 env->ExceptionDescribe(); 53 return true; 54 } 55 return false; 56} 57 58/////////////////////////////////////////////////////////////////////////////// 59 60AutoJavaFloatArray::AutoJavaFloatArray(JNIEnv* env, jfloatArray array, 61 int minLength, JNIAccess access) 62: fEnv(env), fArray(array), fPtr(NULL), fLen(0) { 63 SkASSERT(env); 64 if (array) { 65 fLen = env->GetArrayLength(array); 66 if (fLen < minLength) { 67 sk_throw(); 68 } 69 fPtr = env->GetFloatArrayElements(array, NULL); 70 } 71 fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0; 72} 73 74AutoJavaFloatArray::~AutoJavaFloatArray() { 75 if (fPtr) { 76 fEnv->ReleaseFloatArrayElements(fArray, fPtr, fReleaseMode); 77 } 78} 79 80AutoJavaIntArray::AutoJavaIntArray(JNIEnv* env, jintArray array, 81 int minLength) 82: fEnv(env), fArray(array), fPtr(NULL), fLen(0) { 83 SkASSERT(env); 84 if (array) { 85 fLen = env->GetArrayLength(array); 86 if (fLen < minLength) { 87 sk_throw(); 88 } 89 fPtr = env->GetIntArrayElements(array, NULL); 90 } 91} 92 93AutoJavaIntArray::~AutoJavaIntArray() { 94 if (fPtr) { 95 fEnv->ReleaseIntArrayElements(fArray, fPtr, 0); 96 } 97} 98 99AutoJavaShortArray::AutoJavaShortArray(JNIEnv* env, jshortArray array, 100 int minLength, JNIAccess access) 101: fEnv(env), fArray(array), fPtr(NULL), fLen(0) { 102 SkASSERT(env); 103 if (array) { 104 fLen = env->GetArrayLength(array); 105 if (fLen < minLength) { 106 sk_throw(); 107 } 108 fPtr = env->GetShortArrayElements(array, NULL); 109 } 110 fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0; 111} 112 113AutoJavaShortArray::~AutoJavaShortArray() { 114 if (fPtr) { 115 fEnv->ReleaseShortArrayElements(fArray, fPtr, fReleaseMode); 116 } 117} 118 119AutoJavaByteArray::AutoJavaByteArray(JNIEnv* env, jbyteArray array, 120 int minLength) 121: fEnv(env), fArray(array), fPtr(NULL), fLen(0) { 122 SkASSERT(env); 123 if (array) { 124 fLen = env->GetArrayLength(array); 125 if (fLen < minLength) { 126 sk_throw(); 127 } 128 fPtr = env->GetByteArrayElements(array, NULL); 129 } 130} 131 132AutoJavaByteArray::~AutoJavaByteArray() { 133 if (fPtr) { 134 fEnv->ReleaseByteArrayElements(fArray, fPtr, 0); 135 } 136} 137 138/////////////////////////////////////////////////////////////////////////////// 139 140static jclass gRect_class; 141static jfieldID gRect_leftFieldID; 142static jfieldID gRect_topFieldID; 143static jfieldID gRect_rightFieldID; 144static jfieldID gRect_bottomFieldID; 145 146static jclass gRectF_class; 147static jfieldID gRectF_leftFieldID; 148static jfieldID gRectF_topFieldID; 149static jfieldID gRectF_rightFieldID; 150static jfieldID gRectF_bottomFieldID; 151 152static jclass gPoint_class; 153static jfieldID gPoint_xFieldID; 154static jfieldID gPoint_yFieldID; 155 156static jclass gPointF_class; 157static jfieldID gPointF_xFieldID; 158static jfieldID gPointF_yFieldID; 159 160static jclass gBitmap_class; 161static jfieldID gBitmap_nativePtr; 162static jmethodID gBitmap_constructorMethodID; 163static jmethodID gBitmap_reinitMethodID; 164static jmethodID gBitmap_getAllocationByteCountMethodID; 165 166static jclass gBitmapConfig_class; 167static jfieldID gBitmapConfig_nativeInstanceID; 168 169static jclass gBitmapRegionDecoder_class; 170static jmethodID gBitmapRegionDecoder_constructorMethodID; 171 172static jclass gCanvas_class; 173static jfieldID gCanvas_nativeInstanceID; 174 175static jclass gPicture_class; 176static jfieldID gPicture_nativeInstanceID; 177 178static jclass gRegion_class; 179static jfieldID gRegion_nativeInstanceID; 180static jmethodID gRegion_constructorMethodID; 181 182static jclass gByte_class; 183static jobject gVMRuntime; 184static jclass gVMRuntime_class; 185static jmethodID gVMRuntime_newNonMovableArray; 186static jmethodID gVMRuntime_addressOf; 187 188/////////////////////////////////////////////////////////////////////////////// 189 190void GraphicsJNI::get_jrect(JNIEnv* env, jobject obj, int* L, int* T, int* R, int* B) 191{ 192 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 193 194 *L = env->GetIntField(obj, gRect_leftFieldID); 195 *T = env->GetIntField(obj, gRect_topFieldID); 196 *R = env->GetIntField(obj, gRect_rightFieldID); 197 *B = env->GetIntField(obj, gRect_bottomFieldID); 198} 199 200void GraphicsJNI::set_jrect(JNIEnv* env, jobject obj, int L, int T, int R, int B) 201{ 202 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 203 204 env->SetIntField(obj, gRect_leftFieldID, L); 205 env->SetIntField(obj, gRect_topFieldID, T); 206 env->SetIntField(obj, gRect_rightFieldID, R); 207 env->SetIntField(obj, gRect_bottomFieldID, B); 208} 209 210SkIRect* GraphicsJNI::jrect_to_irect(JNIEnv* env, jobject obj, SkIRect* ir) 211{ 212 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 213 214 ir->set(env->GetIntField(obj, gRect_leftFieldID), 215 env->GetIntField(obj, gRect_topFieldID), 216 env->GetIntField(obj, gRect_rightFieldID), 217 env->GetIntField(obj, gRect_bottomFieldID)); 218 return ir; 219} 220 221void GraphicsJNI::irect_to_jrect(const SkIRect& ir, JNIEnv* env, jobject obj) 222{ 223 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 224 225 env->SetIntField(obj, gRect_leftFieldID, ir.fLeft); 226 env->SetIntField(obj, gRect_topFieldID, ir.fTop); 227 env->SetIntField(obj, gRect_rightFieldID, ir.fRight); 228 env->SetIntField(obj, gRect_bottomFieldID, ir.fBottom); 229} 230 231SkRect* GraphicsJNI::jrectf_to_rect(JNIEnv* env, jobject obj, SkRect* r) 232{ 233 SkASSERT(env->IsInstanceOf(obj, gRectF_class)); 234 235 r->set(env->GetFloatField(obj, gRectF_leftFieldID), 236 env->GetFloatField(obj, gRectF_topFieldID), 237 env->GetFloatField(obj, gRectF_rightFieldID), 238 env->GetFloatField(obj, gRectF_bottomFieldID)); 239 return r; 240} 241 242SkRect* GraphicsJNI::jrect_to_rect(JNIEnv* env, jobject obj, SkRect* r) 243{ 244 SkASSERT(env->IsInstanceOf(obj, gRect_class)); 245 246 r->set(SkIntToScalar(env->GetIntField(obj, gRect_leftFieldID)), 247 SkIntToScalar(env->GetIntField(obj, gRect_topFieldID)), 248 SkIntToScalar(env->GetIntField(obj, gRect_rightFieldID)), 249 SkIntToScalar(env->GetIntField(obj, gRect_bottomFieldID))); 250 return r; 251} 252 253void GraphicsJNI::rect_to_jrectf(const SkRect& r, JNIEnv* env, jobject obj) 254{ 255 SkASSERT(env->IsInstanceOf(obj, gRectF_class)); 256 257 env->SetFloatField(obj, gRectF_leftFieldID, SkScalarToFloat(r.fLeft)); 258 env->SetFloatField(obj, gRectF_topFieldID, SkScalarToFloat(r.fTop)); 259 env->SetFloatField(obj, gRectF_rightFieldID, SkScalarToFloat(r.fRight)); 260 env->SetFloatField(obj, gRectF_bottomFieldID, SkScalarToFloat(r.fBottom)); 261} 262 263SkIPoint* GraphicsJNI::jpoint_to_ipoint(JNIEnv* env, jobject obj, SkIPoint* point) 264{ 265 SkASSERT(env->IsInstanceOf(obj, gPoint_class)); 266 267 point->set(env->GetIntField(obj, gPoint_xFieldID), 268 env->GetIntField(obj, gPoint_yFieldID)); 269 return point; 270} 271 272void GraphicsJNI::ipoint_to_jpoint(const SkIPoint& ir, JNIEnv* env, jobject obj) 273{ 274 SkASSERT(env->IsInstanceOf(obj, gPoint_class)); 275 276 env->SetIntField(obj, gPoint_xFieldID, ir.fX); 277 env->SetIntField(obj, gPoint_yFieldID, ir.fY); 278} 279 280SkPoint* GraphicsJNI::jpointf_to_point(JNIEnv* env, jobject obj, SkPoint* point) 281{ 282 SkASSERT(env->IsInstanceOf(obj, gPointF_class)); 283 284 point->set(env->GetIntField(obj, gPointF_xFieldID), 285 env->GetIntField(obj, gPointF_yFieldID)); 286 return point; 287} 288 289void GraphicsJNI::point_to_jpointf(const SkPoint& r, JNIEnv* env, jobject obj) 290{ 291 SkASSERT(env->IsInstanceOf(obj, gPointF_class)); 292 293 env->SetFloatField(obj, gPointF_xFieldID, SkScalarToFloat(r.fX)); 294 env->SetFloatField(obj, gPointF_yFieldID, SkScalarToFloat(r.fY)); 295} 296 297// This enum must keep these int values, to match the int values 298// in the java Bitmap.Config enum. 299enum LegacyBitmapConfig { 300 kNo_LegacyBitmapConfig = 0, 301 kA8_LegacyBitmapConfig = 1, 302 kIndex8_LegacyBitmapConfig = 2, 303 kRGB_565_LegacyBitmapConfig = 3, 304 kARGB_4444_LegacyBitmapConfig = 4, 305 kARGB_8888_LegacyBitmapConfig = 5, 306 307 kLastEnum_LegacyBitmapConfig = kARGB_8888_LegacyBitmapConfig 308}; 309 310jint GraphicsJNI::colorTypeToLegacyBitmapConfig(SkColorType colorType) { 311 switch (colorType) { 312 case kN32_SkColorType: 313 return kARGB_8888_LegacyBitmapConfig; 314 case kARGB_4444_SkColorType: 315 return kARGB_4444_LegacyBitmapConfig; 316 case kRGB_565_SkColorType: 317 return kRGB_565_LegacyBitmapConfig; 318 case kIndex_8_SkColorType: 319 return kIndex8_LegacyBitmapConfig; 320 case kAlpha_8_SkColorType: 321 return kA8_LegacyBitmapConfig; 322 case kUnknown_SkColorType: 323 default: 324 break; 325 } 326 return kNo_LegacyBitmapConfig; 327} 328 329SkColorType GraphicsJNI::legacyBitmapConfigToColorType(jint legacyConfig) { 330 const uint8_t gConfig2ColorType[] = { 331 kUnknown_SkColorType, 332 kAlpha_8_SkColorType, 333 kIndex_8_SkColorType, 334 kRGB_565_SkColorType, 335 kARGB_4444_SkColorType, 336 kN32_SkColorType 337 }; 338 339 if (legacyConfig < 0 || legacyConfig > kLastEnum_LegacyBitmapConfig) { 340 legacyConfig = kNo_LegacyBitmapConfig; 341 } 342 return static_cast<SkColorType>(gConfig2ColorType[legacyConfig]); 343} 344 345android::Bitmap* GraphicsJNI::getBitmap(JNIEnv* env, jobject bitmap) { 346 SkASSERT(env); 347 SkASSERT(bitmap); 348 SkASSERT(env->IsInstanceOf(bitmap, gBitmap_class)); 349 jlong bitmapHandle = env->GetLongField(bitmap, gBitmap_nativePtr); 350 android::Bitmap* b = reinterpret_cast<android::Bitmap*>(bitmapHandle); 351 SkASSERT(b); 352 return b; 353} 354 355void GraphicsJNI::getSkBitmap(JNIEnv* env, jobject bitmap, SkBitmap* outBitmap) { 356 getBitmap(env, bitmap)->getSkBitmap(outBitmap); 357} 358 359SkPixelRef* GraphicsJNI::refSkPixelRef(JNIEnv* env, jobject bitmap) { 360 return getBitmap(env, bitmap)->refPixelRef(); 361} 362 363SkColorType GraphicsJNI::getNativeBitmapColorType(JNIEnv* env, jobject jconfig) { 364 SkASSERT(env); 365 if (NULL == jconfig) { 366 return kUnknown_SkColorType; 367 } 368 SkASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class)); 369 int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID); 370 return legacyBitmapConfigToColorType(c); 371} 372 373android::Canvas* GraphicsJNI::getNativeCanvas(JNIEnv* env, jobject canvas) { 374 SkASSERT(env); 375 SkASSERT(canvas); 376 SkASSERT(env->IsInstanceOf(canvas, gCanvas_class)); 377 jlong canvasHandle = env->GetLongField(canvas, gCanvas_nativeInstanceID); 378 if (!canvasHandle) { 379 return NULL; 380 } 381 return reinterpret_cast<android::Canvas*>(canvasHandle); 382} 383 384SkRegion* GraphicsJNI::getNativeRegion(JNIEnv* env, jobject region) 385{ 386 SkASSERT(env); 387 SkASSERT(region); 388 SkASSERT(env->IsInstanceOf(region, gRegion_class)); 389 jlong regionHandle = env->GetLongField(region, gRegion_nativeInstanceID); 390 SkRegion* r = reinterpret_cast<SkRegion*>(regionHandle); 391 SkASSERT(r); 392 return r; 393} 394 395/////////////////////////////////////////////////////////////////////////////////////////// 396 397// Assert that bitmap's SkAlphaType is consistent with isPremultiplied. 398static void assert_premultiplied(const SkImageInfo& info, bool isPremultiplied) { 399 // kOpaque_SkAlphaType and kIgnore_SkAlphaType mean that isPremultiplied is 400 // irrelevant. This just tests to ensure that the SkAlphaType is not 401 // opposite of isPremultiplied. 402 if (isPremultiplied) { 403 SkASSERT(info.alphaType() != kUnpremul_SkAlphaType); 404 } else { 405 SkASSERT(info.alphaType() != kPremul_SkAlphaType); 406 } 407} 408 409jobject GraphicsJNI::createBitmap(JNIEnv* env, android::Bitmap* bitmap, 410 int bitmapCreateFlags, jbyteArray ninePatchChunk, jobject ninePatchInsets, 411 int density) { 412 bool isMutable = bitmapCreateFlags & kBitmapCreateFlag_Mutable; 413 bool isPremultiplied = bitmapCreateFlags & kBitmapCreateFlag_Premultiplied; 414 // The caller needs to have already set the alpha type properly, so the 415 // native SkBitmap stays in sync with the Java Bitmap. 416 assert_premultiplied(bitmap->info(), isPremultiplied); 417 418 jobject obj = env->NewObject(gBitmap_class, gBitmap_constructorMethodID, 419 reinterpret_cast<jlong>(bitmap), bitmap->width(), bitmap->height(), density, isMutable, 420 isPremultiplied, ninePatchChunk, ninePatchInsets); 421 hasException(env); // For the side effect of logging. 422 return obj; 423} 424 425void GraphicsJNI::reinitBitmap(JNIEnv* env, jobject javaBitmap, const SkImageInfo& info, 426 bool isPremultiplied) 427{ 428 // The caller needs to have already set the alpha type properly, so the 429 // native SkBitmap stays in sync with the Java Bitmap. 430 assert_premultiplied(info, isPremultiplied); 431 432 env->CallVoidMethod(javaBitmap, gBitmap_reinitMethodID, 433 info.width(), info.height(), isPremultiplied); 434} 435 436int GraphicsJNI::getBitmapAllocationByteCount(JNIEnv* env, jobject javaBitmap) 437{ 438 return env->CallIntMethod(javaBitmap, gBitmap_getAllocationByteCountMethodID); 439} 440 441jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap) 442{ 443 SkASSERT(bitmap != NULL); 444 445 jobject obj = env->NewObject(gBitmapRegionDecoder_class, 446 gBitmapRegionDecoder_constructorMethodID, 447 reinterpret_cast<jlong>(bitmap)); 448 hasException(env); // For the side effect of logging. 449 return obj; 450} 451 452jobject GraphicsJNI::createRegion(JNIEnv* env, SkRegion* region) 453{ 454 SkASSERT(region != NULL); 455 jobject obj = env->NewObject(gRegion_class, gRegion_constructorMethodID, 456 reinterpret_cast<jlong>(region), 0); 457 hasException(env); // For the side effect of logging. 458 return obj; 459} 460 461static JNIEnv* vm2env(JavaVM* vm) 462{ 463 JNIEnv* env = NULL; 464 if (vm->GetEnv((void**)&env, JNI_VERSION_1_4) != JNI_OK || NULL == env) 465 { 466 SkDebugf("------- [%p] vm->GetEnv() failed\n", vm); 467 sk_throw(); 468 } 469 return env; 470} 471 472/////////////////////////////////////////////////////////////////////////////// 473 474static bool computeAllocationSize(const SkBitmap& bitmap, size_t* size) { 475 int32_t rowBytes32 = SkToS32(bitmap.rowBytes()); 476 int64_t bigSize = (int64_t)bitmap.height() * rowBytes32; 477 if (rowBytes32 < 0 || !sk_64_isS32(bigSize)) { 478 return false; // allocation will be too large 479 } 480 481 *size = sk_64_asS32(bigSize); 482 return true; 483} 484 485android::Bitmap* GraphicsJNI::allocateHeapPixelRef(SkBitmap* bitmap, SkColorTable* ctable) { 486 const SkImageInfo& info = bitmap->info(); 487 if (info.colorType() == kUnknown_SkColorType) { 488 LOG_ALWAYS_FATAL("unknown bitmap configuration"); 489 return nullptr; 490 } 491 492 size_t size; 493 if (!computeAllocationSize(*bitmap, &size)) { 494 return nullptr; 495 } 496 497 // we must respect the rowBytes value already set on the bitmap instead of 498 // attempting to compute our own. 499 const size_t rowBytes = bitmap->rowBytes(); 500 501 void* addr = calloc(size, 1); 502 if (!addr) { 503 return nullptr; 504 } 505 506 android::Bitmap* wrapper = new android::Bitmap(addr, size, info, rowBytes, ctable); 507 wrapper->getSkBitmap(bitmap); 508 // since we're already allocated, we lockPixels right away 509 // HeapAllocator behaves this way too 510 bitmap->lockPixels(); 511 512 return wrapper; 513} 514 515struct AndroidPixelRefContext { 516 int32_t stableID; 517}; 518 519static void allocatePixelsReleaseProc(void* ptr, void* ctx) { 520 AndroidPixelRefContext* context = (AndroidPixelRefContext*)ctx; 521 if (android::uirenderer::Caches::hasInstance()) { 522 android::uirenderer::Caches::getInstance().textureCache.releaseTexture(context->stableID); 523 } 524 525 sk_free(ptr); 526 delete context; 527} 528 529bool GraphicsJNI::allocatePixels(JNIEnv* env, SkBitmap* bitmap, SkColorTable* ctable) { 530 const SkImageInfo& info = bitmap->info(); 531 if (info.colorType() == kUnknown_SkColorType) { 532 doThrowIAE(env, "unknown bitmap configuration"); 533 return NULL; 534 } 535 536 size_t size; 537 if (!computeAllocationSize(*bitmap, &size)) { 538 return false; 539 } 540 541 // we must respect the rowBytes value already set on the bitmap instead of 542 // attempting to compute our own. 543 const size_t rowBytes = bitmap->rowBytes(); 544 545 void* addr = sk_malloc_flags(size, 0); 546 if (NULL == addr) { 547 return false; 548 } 549 550 AndroidPixelRefContext* context = new AndroidPixelRefContext; 551 SkMallocPixelRef* pr = SkMallocPixelRef::NewWithProc(info, rowBytes, ctable, addr, 552 &allocatePixelsReleaseProc, context); 553 if (!pr) { 554 delete context; 555 return false; 556 } 557 558 // set the stableID in the context so that it can be used later in 559 // allocatePixelsReleaseProc to remove the texture from the cache. 560 context->stableID = pr->getStableID(); 561 562 bitmap->setPixelRef(pr)->unref(); 563 // since we're already allocated, we can lockPixels right away 564 bitmap->lockPixels(); 565 566 return true; 567} 568 569android::Bitmap* GraphicsJNI::allocateAshmemPixelRef(JNIEnv* env, SkBitmap* bitmap, 570 SkColorTable* ctable) { 571 int fd; 572 573 const SkImageInfo& info = bitmap->info(); 574 if (info.colorType() == kUnknown_SkColorType) { 575 doThrowIAE(env, "unknown bitmap configuration"); 576 return nullptr; 577 } 578 579 size_t size; 580 if (!computeAllocationSize(*bitmap, &size)) { 581 return nullptr; 582 } 583 584 // we must respect the rowBytes value already set on the bitmap instead of 585 // attempting to compute our own. 586 const size_t rowBytes = bitmap->rowBytes(); 587 588 // Create new ashmem region with read/write priv 589 fd = ashmem_create_region("bitmap", size); 590 if (fd < 0) { 591 return nullptr; 592 } 593 594 void* addr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); 595 if (addr == MAP_FAILED) { 596 close(fd); 597 return nullptr; 598 } 599 600 if (ashmem_set_prot_region(fd, PROT_READ) < 0) { 601 munmap(addr, size); 602 close(fd); 603 return nullptr; 604 } 605 606 android::Bitmap* wrapper = new android::Bitmap(addr, fd, size, info, rowBytes, ctable); 607 wrapper->getSkBitmap(bitmap); 608 // since we're already allocated, we lockPixels right away 609 // HeapAllocator behaves this way too 610 bitmap->lockPixels(); 611 612 return wrapper; 613} 614 615android::Bitmap* GraphicsJNI::mapAshmemPixelRef(JNIEnv* env, SkBitmap* bitmap, 616 SkColorTable* ctable, int fd, void* addr, size_t size, bool readOnly) { 617 const SkImageInfo& info = bitmap->info(); 618 if (info.colorType() == kUnknown_SkColorType) { 619 doThrowIAE(env, "unknown bitmap configuration"); 620 return nullptr; 621 } 622 623 if (!addr) { 624 // Map existing ashmem region if not already mapped. 625 int flags = readOnly ? (PROT_READ) : (PROT_READ | PROT_WRITE); 626 size = ashmem_get_size_region(fd); 627 addr = mmap(NULL, size, flags, MAP_SHARED, fd, 0); 628 if (addr == MAP_FAILED) { 629 return nullptr; 630 } 631 } 632 633 // we must respect the rowBytes value already set on the bitmap instead of 634 // attempting to compute our own. 635 const size_t rowBytes = bitmap->rowBytes(); 636 637 android::Bitmap* wrapper = new android::Bitmap(addr, fd, size, info, rowBytes, ctable); 638 wrapper->getSkBitmap(bitmap); 639 if (readOnly) { 640 bitmap->pixelRef()->setImmutable(); 641 } 642 // since we're already allocated, we lockPixels right away 643 // HeapAllocator behaves this way too 644 bitmap->lockPixels(); 645 646 return wrapper; 647} 648 649/////////////////////////////////////////////////////////////////////////////// 650 651HeapAllocator::HeapAllocator() {} 652 653HeapAllocator::~HeapAllocator() { 654 if (mStorage) { 655 mStorage->detachFromJava(); 656 } 657} 658 659bool HeapAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) { 660 mStorage = GraphicsJNI::allocateHeapPixelRef(bitmap, ctable); 661 return mStorage != nullptr; 662} 663 664//////////////////////////////////////////////////////////////////////////////// 665 666RecyclingClippingPixelAllocator::RecyclingClippingPixelAllocator( 667 android::Bitmap* recycledBitmap, size_t recycledBytes) 668 : mRecycledBitmap(recycledBitmap) 669 , mRecycledBytes(recycledBytes) 670 , mSkiaBitmap(nullptr) 671 , mNeedsCopy(false) 672{} 673 674RecyclingClippingPixelAllocator::~RecyclingClippingPixelAllocator() {} 675 676bool RecyclingClippingPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) { 677 // Ensure that the caller did not pass in a NULL bitmap to the constructor or this 678 // function. 679 LOG_ALWAYS_FATAL_IF(!mRecycledBitmap); 680 LOG_ALWAYS_FATAL_IF(!bitmap); 681 mSkiaBitmap = bitmap; 682 683 // This behaves differently than the RecyclingPixelAllocator. For backwards 684 // compatibility, the original color type of the recycled bitmap must be maintained. 685 if (mRecycledBitmap->info().colorType() != bitmap->colorType()) { 686 return false; 687 } 688 689 // The Skia bitmap specifies the width and height needed by the decoder. 690 // mRecycledBitmap specifies the width and height of the bitmap that we 691 // want to reuse. Neither can be changed. We will try to find a way 692 // to reuse the memory. 693 const int maxWidth = SkTMax(bitmap->width(), mRecycledBitmap->info().width()); 694 const int maxHeight = SkTMax(bitmap->height(), mRecycledBitmap->info().height()); 695 const SkImageInfo maxInfo = bitmap->info().makeWH(maxWidth, maxHeight); 696 const size_t rowBytes = maxInfo.minRowBytes(); 697 const size_t bytesNeeded = maxInfo.getSafeSize(rowBytes); 698 if (bytesNeeded <= mRecycledBytes) { 699 // Here we take advantage of reconfigure() to reset the rowBytes and ctable 700 // of mRecycledBitmap. It is very important that we pass in 701 // mRecycledBitmap->info() for the SkImageInfo. According to the 702 // specification for BitmapRegionDecoder, we are not allowed to change 703 // the SkImageInfo. 704 mRecycledBitmap->reconfigure(mRecycledBitmap->info(), rowBytes, ctable); 705 706 // Give the bitmap the same pixelRef as mRecycledBitmap. 707 // skbug.com/4538: We also need to make sure that the rowBytes on the pixel ref 708 // match the rowBytes on the bitmap. 709 bitmap->setInfo(bitmap->info(), rowBytes); 710 bitmap->setPixelRef(mRecycledBitmap->refPixelRef())->unref(); 711 712 // Make sure that the recycled bitmap has the correct alpha type. 713 mRecycledBitmap->setAlphaType(bitmap->alphaType()); 714 715 bitmap->notifyPixelsChanged(); 716 bitmap->lockPixels(); 717 mNeedsCopy = false; 718 719 // TODO: If the dimensions of the SkBitmap are smaller than those of 720 // mRecycledBitmap, should we zero the memory in mRecycledBitmap? 721 return true; 722 } 723 724 // In the event that mRecycledBitmap is not large enough, allocate new memory 725 // on the heap. 726 SkBitmap::HeapAllocator heapAllocator; 727 728 // We will need to copy from heap memory to mRecycledBitmap's memory after the 729 // decode is complete. 730 mNeedsCopy = true; 731 732 return heapAllocator.allocPixelRef(bitmap, ctable); 733} 734 735void RecyclingClippingPixelAllocator::copyIfNecessary() { 736 if (mNeedsCopy) { 737 SkPixelRef* recycledPixels = mRecycledBitmap->refPixelRef(); 738 void* dst = recycledPixels->pixels(); 739 const size_t dstRowBytes = mRecycledBitmap->rowBytes(); 740 const size_t bytesToCopy = std::min(mRecycledBitmap->info().minRowBytes(), 741 mSkiaBitmap->info().minRowBytes()); 742 const int rowsToCopy = std::min(mRecycledBitmap->info().height(), 743 mSkiaBitmap->info().height()); 744 for (int y = 0; y < rowsToCopy; y++) { 745 memcpy(dst, mSkiaBitmap->getAddr(0, y), bytesToCopy); 746 dst = SkTAddOffset<void>(dst, dstRowBytes); 747 } 748 recycledPixels->notifyPixelsChanged(); 749 recycledPixels->unref(); 750 } 751 mRecycledBitmap = nullptr; 752 mSkiaBitmap = nullptr; 753} 754 755//////////////////////////////////////////////////////////////////////////////// 756 757AshmemPixelAllocator::AshmemPixelAllocator(JNIEnv *env) { 758 LOG_ALWAYS_FATAL_IF(env->GetJavaVM(&mJavaVM) != JNI_OK, 759 "env->GetJavaVM failed"); 760} 761 762AshmemPixelAllocator::~AshmemPixelAllocator() { 763 if (mStorage) { 764 mStorage->detachFromJava(); 765 } 766} 767 768bool AshmemPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) { 769 JNIEnv* env = vm2env(mJavaVM); 770 mStorage = GraphicsJNI::allocateAshmemPixelRef(env, bitmap, ctable); 771 return mStorage != nullptr; 772} 773 774//////////////////////////////////////////////////////////////////////////////// 775 776static jclass make_globalref(JNIEnv* env, const char classname[]) 777{ 778 jclass c = env->FindClass(classname); 779 SkASSERT(c); 780 return (jclass) env->NewGlobalRef(c); 781} 782 783static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz, 784 const char fieldname[], const char type[]) 785{ 786 jfieldID id = env->GetFieldID(clazz, fieldname, type); 787 SkASSERT(id); 788 return id; 789} 790 791int register_android_graphics_Graphics(JNIEnv* env) 792{ 793 jmethodID m; 794 jclass c; 795 796 gRect_class = make_globalref(env, "android/graphics/Rect"); 797 gRect_leftFieldID = getFieldIDCheck(env, gRect_class, "left", "I"); 798 gRect_topFieldID = getFieldIDCheck(env, gRect_class, "top", "I"); 799 gRect_rightFieldID = getFieldIDCheck(env, gRect_class, "right", "I"); 800 gRect_bottomFieldID = getFieldIDCheck(env, gRect_class, "bottom", "I"); 801 802 gRectF_class = make_globalref(env, "android/graphics/RectF"); 803 gRectF_leftFieldID = getFieldIDCheck(env, gRectF_class, "left", "F"); 804 gRectF_topFieldID = getFieldIDCheck(env, gRectF_class, "top", "F"); 805 gRectF_rightFieldID = getFieldIDCheck(env, gRectF_class, "right", "F"); 806 gRectF_bottomFieldID = getFieldIDCheck(env, gRectF_class, "bottom", "F"); 807 808 gPoint_class = make_globalref(env, "android/graphics/Point"); 809 gPoint_xFieldID = getFieldIDCheck(env, gPoint_class, "x", "I"); 810 gPoint_yFieldID = getFieldIDCheck(env, gPoint_class, "y", "I"); 811 812 gPointF_class = make_globalref(env, "android/graphics/PointF"); 813 gPointF_xFieldID = getFieldIDCheck(env, gPointF_class, "x", "F"); 814 gPointF_yFieldID = getFieldIDCheck(env, gPointF_class, "y", "F"); 815 816 gBitmap_class = make_globalref(env, "android/graphics/Bitmap"); 817 gBitmap_nativePtr = getFieldIDCheck(env, gBitmap_class, "mNativePtr", "J"); 818 gBitmap_constructorMethodID = env->GetMethodID(gBitmap_class, "<init>", "(JIIIZZ[BLandroid/graphics/NinePatch$InsetStruct;)V"); 819 gBitmap_reinitMethodID = env->GetMethodID(gBitmap_class, "reinit", "(IIZ)V"); 820 gBitmap_getAllocationByteCountMethodID = env->GetMethodID(gBitmap_class, "getAllocationByteCount", "()I"); 821 gBitmapRegionDecoder_class = make_globalref(env, "android/graphics/BitmapRegionDecoder"); 822 gBitmapRegionDecoder_constructorMethodID = env->GetMethodID(gBitmapRegionDecoder_class, "<init>", "(J)V"); 823 824 gBitmapConfig_class = make_globalref(env, "android/graphics/Bitmap$Config"); 825 gBitmapConfig_nativeInstanceID = getFieldIDCheck(env, gBitmapConfig_class, 826 "nativeInt", "I"); 827 828 gCanvas_class = make_globalref(env, "android/graphics/Canvas"); 829 gCanvas_nativeInstanceID = getFieldIDCheck(env, gCanvas_class, "mNativeCanvasWrapper", "J"); 830 831 gPicture_class = make_globalref(env, "android/graphics/Picture"); 832 gPicture_nativeInstanceID = getFieldIDCheck(env, gPicture_class, "mNativePicture", "J"); 833 834 gRegion_class = make_globalref(env, "android/graphics/Region"); 835 gRegion_nativeInstanceID = getFieldIDCheck(env, gRegion_class, "mNativeRegion", "J"); 836 gRegion_constructorMethodID = env->GetMethodID(gRegion_class, "<init>", 837 "(JI)V"); 838 839 c = env->FindClass("java/lang/Byte"); 840 gByte_class = (jclass) env->NewGlobalRef( 841 env->GetStaticObjectField(c, env->GetStaticFieldID(c, "TYPE", "Ljava/lang/Class;"))); 842 843 gVMRuntime_class = make_globalref(env, "dalvik/system/VMRuntime"); 844 m = env->GetStaticMethodID(gVMRuntime_class, "getRuntime", "()Ldalvik/system/VMRuntime;"); 845 gVMRuntime = env->NewGlobalRef(env->CallStaticObjectMethod(gVMRuntime_class, m)); 846 gVMRuntime_newNonMovableArray = env->GetMethodID(gVMRuntime_class, "newNonMovableArray", 847 "(Ljava/lang/Class;I)Ljava/lang/Object;"); 848 gVMRuntime_addressOf = env->GetMethodID(gVMRuntime_class, "addressOf", "(Ljava/lang/Object;)J"); 849 850 return 0; 851} 852