Bitmap.cpp revision c84d203da21c3ae3ded94c79c035d41b27809b3b
1#include "SkBitmap.h" 2#include "SkPixelRef.h" 3#include "SkImageEncoder.h" 4#include "SkColorPriv.h" 5#include "GraphicsJNI.h" 6#include "SkDither.h" 7#include "SkUnPreMultiply.h" 8 9#include <binder/Parcel.h> 10#include "android_os_Parcel.h" 11#include "android_util_Binder.h" 12#include "android_nio_utils.h" 13#include "CreateJavaOutputStreamAdaptor.h" 14 15#include <jni.h> 16 17#include <Caches.h> 18 19#if 0 20 #define TRACE_BITMAP(code) code 21#else 22 #define TRACE_BITMAP(code) 23#endif 24 25/////////////////////////////////////////////////////////////////////////////// 26// Conversions to/from SkColor, for get/setPixels, and the create method, which 27// is basically like setPixels 28 29typedef void (*FromColorProc)(void* dst, const SkColor src[], int width, 30 int x, int y); 31 32static void FromColor_D32(void* dst, const SkColor src[], int width, 33 int, int) { 34 SkPMColor* d = (SkPMColor*)dst; 35 36 for (int i = 0; i < width; i++) { 37 *d++ = SkPreMultiplyColor(*src++); 38 } 39} 40 41static void FromColor_D565(void* dst, const SkColor src[], int width, 42 int x, int y) { 43 uint16_t* d = (uint16_t*)dst; 44 45 DITHER_565_SCAN(y); 46 for (int stop = x + width; x < stop; x++) { 47 SkColor c = *src++; 48 *d++ = SkDitherRGBTo565(SkColorGetR(c), SkColorGetG(c), SkColorGetB(c), 49 DITHER_VALUE(x)); 50 } 51} 52 53static void FromColor_D4444(void* dst, const SkColor src[], int width, 54 int x, int y) { 55 SkPMColor16* d = (SkPMColor16*)dst; 56 57 DITHER_4444_SCAN(y); 58 for (int stop = x + width; x < stop; x++) { 59 SkPMColor c = SkPreMultiplyColor(*src++); 60 *d++ = SkDitherARGB32To4444(c, DITHER_VALUE(x)); 61// *d++ = SkPixel32ToPixel4444(c); 62 } 63} 64 65// can return NULL 66static FromColorProc ChooseFromColorProc(SkBitmap::Config config) { 67 switch (config) { 68 case SkBitmap::kARGB_8888_Config: 69 return FromColor_D32; 70 case SkBitmap::kARGB_4444_Config: 71 return FromColor_D4444; 72 case SkBitmap::kRGB_565_Config: 73 return FromColor_D565; 74 default: 75 break; 76 } 77 return NULL; 78} 79 80bool GraphicsJNI::SetPixels(JNIEnv* env, jintArray srcColors, 81 int srcOffset, int srcStride, 82 int x, int y, int width, int height, 83 const SkBitmap& dstBitmap) { 84 SkAutoLockPixels alp(dstBitmap); 85 void* dst = dstBitmap.getPixels(); 86 FromColorProc proc = ChooseFromColorProc(dstBitmap.config()); 87 88 if (NULL == dst || NULL == proc) { 89 return false; 90 } 91 92 const jint* array = env->GetIntArrayElements(srcColors, NULL); 93 const SkColor* src = (const SkColor*)array + srcOffset; 94 95 // reset to to actual choice from caller 96 dst = dstBitmap.getAddr(x, y); 97 // now copy/convert each scanline 98 for (int y = 0; y < height; y++) { 99 proc(dst, src, width, x, y); 100 src += srcStride; 101 dst = (char*)dst + dstBitmap.rowBytes(); 102 } 103 104 dstBitmap.notifyPixelsChanged(); 105 106 env->ReleaseIntArrayElements(srcColors, const_cast<jint*>(array), 107 JNI_ABORT); 108 return true; 109} 110 111//////////////////// ToColor procs 112 113typedef void (*ToColorProc)(SkColor dst[], const void* src, int width, 114 SkColorTable*); 115 116static void ToColor_S32_Alpha(SkColor dst[], const void* src, int width, 117 SkColorTable*) { 118 SkASSERT(width > 0); 119 const SkPMColor* s = (const SkPMColor*)src; 120 do { 121 *dst++ = SkUnPreMultiply::PMColorToColor(*s++); 122 } while (--width != 0); 123} 124 125static void ToColor_S32_Opaque(SkColor dst[], const void* src, int width, 126 SkColorTable*) { 127 SkASSERT(width > 0); 128 const SkPMColor* s = (const SkPMColor*)src; 129 do { 130 SkPMColor c = *s++; 131 *dst++ = SkColorSetRGB(SkGetPackedR32(c), SkGetPackedG32(c), 132 SkGetPackedB32(c)); 133 } while (--width != 0); 134} 135 136static void ToColor_S4444_Alpha(SkColor dst[], const void* src, int width, 137 SkColorTable*) { 138 SkASSERT(width > 0); 139 const SkPMColor16* s = (const SkPMColor16*)src; 140 do { 141 *dst++ = SkUnPreMultiply::PMColorToColor(SkPixel4444ToPixel32(*s++)); 142 } while (--width != 0); 143} 144 145static void ToColor_S4444_Opaque(SkColor dst[], const void* src, int width, 146 SkColorTable*) { 147 SkASSERT(width > 0); 148 const SkPMColor16* s = (const SkPMColor16*)src; 149 do { 150 SkPMColor c = SkPixel4444ToPixel32(*s++); 151 *dst++ = SkColorSetRGB(SkGetPackedR32(c), SkGetPackedG32(c), 152 SkGetPackedB32(c)); 153 } while (--width != 0); 154} 155 156static void ToColor_S565(SkColor dst[], const void* src, int width, 157 SkColorTable*) { 158 SkASSERT(width > 0); 159 const uint16_t* s = (const uint16_t*)src; 160 do { 161 uint16_t c = *s++; 162 *dst++ = SkColorSetRGB(SkPacked16ToR32(c), SkPacked16ToG32(c), 163 SkPacked16ToB32(c)); 164 } while (--width != 0); 165} 166 167static void ToColor_SI8_Alpha(SkColor dst[], const void* src, int width, 168 SkColorTable* ctable) { 169 SkASSERT(width > 0); 170 const uint8_t* s = (const uint8_t*)src; 171 const SkPMColor* colors = ctable->lockColors(); 172 do { 173 *dst++ = SkUnPreMultiply::PMColorToColor(colors[*s++]); 174 } while (--width != 0); 175 ctable->unlockColors(false); 176} 177 178static void ToColor_SI8_Opaque(SkColor dst[], const void* src, int width, 179 SkColorTable* ctable) { 180 SkASSERT(width > 0); 181 const uint8_t* s = (const uint8_t*)src; 182 const SkPMColor* colors = ctable->lockColors(); 183 do { 184 SkPMColor c = colors[*s++]; 185 *dst++ = SkColorSetRGB(SkGetPackedR32(c), SkGetPackedG32(c), 186 SkGetPackedB32(c)); 187 } while (--width != 0); 188 ctable->unlockColors(false); 189} 190 191// can return NULL 192static ToColorProc ChooseToColorProc(const SkBitmap& src) { 193 switch (src.config()) { 194 case SkBitmap::kARGB_8888_Config: 195 return src.isOpaque() ? ToColor_S32_Opaque : ToColor_S32_Alpha; 196 case SkBitmap::kARGB_4444_Config: 197 return src.isOpaque() ? ToColor_S4444_Opaque : ToColor_S4444_Alpha; 198 case SkBitmap::kRGB_565_Config: 199 return ToColor_S565; 200 case SkBitmap::kIndex8_Config: 201 if (src.getColorTable() == NULL) { 202 return NULL; 203 } 204 return src.isOpaque() ? ToColor_SI8_Opaque : ToColor_SI8_Alpha; 205 default: 206 break; 207 } 208 return NULL; 209} 210 211/////////////////////////////////////////////////////////////////////////////// 212/////////////////////////////////////////////////////////////////////////////// 213 214static jobject Bitmap_creator(JNIEnv* env, jobject, jintArray jColors, 215 int offset, int stride, int width, int height, 216 SkBitmap::Config config, jboolean isMutable) { 217 if (NULL != jColors) { 218 size_t n = env->GetArrayLength(jColors); 219 if (n < SkAbs32(stride) * (size_t)height) { 220 doThrowAIOOBE(env); 221 return NULL; 222 } 223 } 224 225 SkBitmap bitmap; 226 227 bitmap.setConfig(config, width, height); 228 229 jbyteArray buff = GraphicsJNI::allocateJavaPixelRef(env, &bitmap, NULL); 230 if (NULL == buff) { 231 return NULL; 232 } 233 234 if (jColors != NULL) { 235 GraphicsJNI::SetPixels(env, jColors, offset, stride, 236 0, 0, width, height, bitmap); 237 } 238 239 return GraphicsJNI::createBitmap(env, new SkBitmap(bitmap), buff, isMutable, NULL, NULL); 240} 241 242static jobject Bitmap_copy(JNIEnv* env, jobject, const SkBitmap* src, 243 SkBitmap::Config dstConfig, jboolean isMutable) { 244 SkBitmap result; 245 JavaPixelAllocator allocator(env); 246 247 if (!src->copyTo(&result, dstConfig, &allocator)) { 248 return NULL; 249 } 250 251 return GraphicsJNI::createBitmap(env, new SkBitmap(result), allocator.getStorageObj(), isMutable, NULL, NULL); 252} 253 254static void Bitmap_destructor(JNIEnv* env, jobject, SkBitmap* bitmap) { 255#ifdef USE_OPENGL_RENDERER 256 if (android::uirenderer::Caches::hasInstance()) { 257 android::uirenderer::Caches::getInstance().resourceCache.destructor(bitmap); 258 return; 259 } 260#endif // USE_OPENGL_RENDERER 261 delete bitmap; 262} 263 264static jboolean Bitmap_recycle(JNIEnv* env, jobject, SkBitmap* bitmap) { 265#ifdef USE_OPENGL_RENDERER 266 if (android::uirenderer::Caches::hasInstance()) { 267 return android::uirenderer::Caches::getInstance().resourceCache.recycle(bitmap); 268 } 269#endif // USE_OPENGL_RENDERER 270 bitmap->setPixels(NULL, NULL); 271 return true; 272} 273 274static void Bitmap_reconfigure(JNIEnv* env, jobject clazz, jint bitmapInt, 275 int width, int height, SkBitmap::Config config, int allocSize) { 276 if (width * height * SkBitmap::ComputeBytesPerPixel(config) > allocSize) { 277 // done in native as there's no way to get BytesPerPixel in Java 278 doThrowIAE(env, "Bitmap not large enough to support new configuration"); 279 return; 280 } 281 SkBitmap* bitmap = reinterpret_cast<SkBitmap*>(bitmapInt); 282 SkPixelRef* ref = bitmap->pixelRef(); 283 SkSafeRef(ref); 284 bitmap->setConfig(config, width, height); 285 bitmap->setPixelRef(ref); 286 287 // notifyPixelsChanged will increment the generation ID even though the actual pixel data 288 // hasn't been touched. This signals the renderer that the bitmap (including width, height, 289 // and config) has changed. 290 ref->notifyPixelsChanged(); 291 SkSafeUnref(ref); 292} 293 294// These must match the int values in Bitmap.java 295enum JavaEncodeFormat { 296 kJPEG_JavaEncodeFormat = 0, 297 kPNG_JavaEncodeFormat = 1, 298 kWEBP_JavaEncodeFormat = 2 299}; 300 301static bool Bitmap_compress(JNIEnv* env, jobject clazz, SkBitmap* bitmap, 302 int format, int quality, 303 jobject jstream, jbyteArray jstorage) { 304 SkImageEncoder::Type fm; 305 306 switch (format) { 307 case kJPEG_JavaEncodeFormat: 308 fm = SkImageEncoder::kJPEG_Type; 309 break; 310 case kPNG_JavaEncodeFormat: 311 fm = SkImageEncoder::kPNG_Type; 312 break; 313 case kWEBP_JavaEncodeFormat: 314 fm = SkImageEncoder::kWEBP_Type; 315 break; 316 default: 317 return false; 318 } 319 320 bool success = false; 321 if (NULL != bitmap) { 322 SkAutoLockPixels alp(*bitmap); 323 324 if (NULL == bitmap->getPixels()) { 325 return false; 326 } 327 328 SkWStream* strm = CreateJavaOutputStreamAdaptor(env, jstream, jstorage); 329 if (NULL == strm) { 330 return false; 331 } 332 333 SkImageEncoder* encoder = SkImageEncoder::Create(fm); 334 if (NULL != encoder) { 335 success = encoder->encodeStream(strm, *bitmap, quality); 336 delete encoder; 337 } 338 delete strm; 339 } 340 return success; 341} 342 343static void Bitmap_erase(JNIEnv* env, jobject, SkBitmap* bitmap, jint color) { 344 bitmap->eraseColor(color); 345} 346 347static int Bitmap_width(JNIEnv* env, jobject, SkBitmap* bitmap) { 348 return bitmap->width(); 349} 350 351static int Bitmap_height(JNIEnv* env, jobject, SkBitmap* bitmap) { 352 return bitmap->height(); 353} 354 355static int Bitmap_rowBytes(JNIEnv* env, jobject, SkBitmap* bitmap) { 356 return bitmap->rowBytes(); 357} 358 359static int Bitmap_config(JNIEnv* env, jobject, SkBitmap* bitmap) { 360 return bitmap->config(); 361} 362 363static int Bitmap_getGenerationId(JNIEnv* env, jobject, SkBitmap* bitmap) { 364 return bitmap->getGenerationID(); 365} 366 367static jboolean Bitmap_hasAlpha(JNIEnv* env, jobject, SkBitmap* bitmap) { 368 return !bitmap->isOpaque(); 369} 370 371static void Bitmap_setHasAlpha(JNIEnv* env, jobject, SkBitmap* bitmap, 372 jboolean hasAlpha) { 373 bitmap->setIsOpaque(!hasAlpha); 374} 375 376static jboolean Bitmap_hasMipMap(JNIEnv* env, jobject, SkBitmap* bitmap) { 377 return bitmap->hasHardwareMipMap(); 378} 379 380static void Bitmap_setHasMipMap(JNIEnv* env, jobject, SkBitmap* bitmap, 381 jboolean hasMipMap) { 382 bitmap->setHasHardwareMipMap(hasMipMap); 383} 384 385/////////////////////////////////////////////////////////////////////////////// 386 387static jobject Bitmap_createFromParcel(JNIEnv* env, jobject, jobject parcel) { 388 if (parcel == NULL) { 389 SkDebugf("-------- unparcel parcel is NULL\n"); 390 return NULL; 391 } 392 393 android::Parcel* p = android::parcelForJavaObject(env, parcel); 394 395 const bool isMutable = p->readInt32() != 0; 396 const SkBitmap::Config config = (SkBitmap::Config)p->readInt32(); 397 const int width = p->readInt32(); 398 const int height = p->readInt32(); 399 const int rowBytes = p->readInt32(); 400 const int density = p->readInt32(); 401 402 if (SkBitmap::kARGB_8888_Config != config && 403 SkBitmap::kRGB_565_Config != config && 404 SkBitmap::kARGB_4444_Config != config && 405 SkBitmap::kIndex8_Config != config && 406 SkBitmap::kA8_Config != config) { 407 SkDebugf("Bitmap_createFromParcel unknown config: %d\n", config); 408 return NULL; 409 } 410 411 SkBitmap* bitmap = new SkBitmap; 412 413 bitmap->setConfig(config, width, height, rowBytes); 414 415 SkColorTable* ctable = NULL; 416 if (config == SkBitmap::kIndex8_Config) { 417 int count = p->readInt32(); 418 if (count > 0) { 419 size_t size = count * sizeof(SkPMColor); 420 const SkPMColor* src = (const SkPMColor*)p->readInplace(size); 421 ctable = new SkColorTable(src, count); 422 } 423 } 424 425 jbyteArray buffer = GraphicsJNI::allocateJavaPixelRef(env, bitmap, ctable); 426 if (NULL == buffer) { 427 SkSafeUnref(ctable); 428 delete bitmap; 429 return NULL; 430 } 431 432 SkSafeUnref(ctable); 433 434 size_t size = bitmap->getSize(); 435 436 android::Parcel::ReadableBlob blob; 437 android::status_t status = p->readBlob(size, &blob); 438 if (status) { 439 doThrowRE(env, "Could not read bitmap from parcel blob."); 440 delete bitmap; 441 return NULL; 442 } 443 444 bitmap->lockPixels(); 445 memcpy(bitmap->getPixels(), blob.data(), size); 446 bitmap->unlockPixels(); 447 448 blob.release(); 449 return GraphicsJNI::createBitmap(env, bitmap, buffer, isMutable, NULL, NULL, density); 450} 451 452static jboolean Bitmap_writeToParcel(JNIEnv* env, jobject, 453 const SkBitmap* bitmap, 454 jboolean isMutable, jint density, 455 jobject parcel) { 456 if (parcel == NULL) { 457 SkDebugf("------- writeToParcel null parcel\n"); 458 return false; 459 } 460 461 android::Parcel* p = android::parcelForJavaObject(env, parcel); 462 463 p->writeInt32(isMutable); 464 p->writeInt32(bitmap->config()); 465 p->writeInt32(bitmap->width()); 466 p->writeInt32(bitmap->height()); 467 p->writeInt32(bitmap->rowBytes()); 468 p->writeInt32(density); 469 470 if (bitmap->getConfig() == SkBitmap::kIndex8_Config) { 471 SkColorTable* ctable = bitmap->getColorTable(); 472 if (ctable != NULL) { 473 int count = ctable->count(); 474 p->writeInt32(count); 475 memcpy(p->writeInplace(count * sizeof(SkPMColor)), 476 ctable->lockColors(), count * sizeof(SkPMColor)); 477 ctable->unlockColors(false); 478 } else { 479 p->writeInt32(0); // indicate no ctable 480 } 481 } 482 483 size_t size = bitmap->getSize(); 484 485 android::Parcel::WritableBlob blob; 486 android::status_t status = p->writeBlob(size, &blob); 487 if (status) { 488 doThrowRE(env, "Could not write bitmap to parcel blob."); 489 return false; 490 } 491 492 bitmap->lockPixels(); 493 const void* pSrc = bitmap->getPixels(); 494 if (pSrc == NULL) { 495 memset(blob.data(), 0, size); 496 } else { 497 memcpy(blob.data(), pSrc, size); 498 } 499 bitmap->unlockPixels(); 500 501 blob.release(); 502 return true; 503} 504 505static jobject Bitmap_extractAlpha(JNIEnv* env, jobject clazz, 506 const SkBitmap* src, const SkPaint* paint, 507 jintArray offsetXY) { 508 SkIPoint offset; 509 SkBitmap* dst = new SkBitmap; 510 JavaPixelAllocator allocator(env); 511 512 src->extractAlpha(dst, paint, &allocator, &offset); 513 // If Skia can't allocate pixels for destination bitmap, it resets 514 // it, that is set its pixels buffer to NULL, and zero width and height. 515 if (dst->getPixels() == NULL && src->getPixels() != NULL) { 516 delete dst; 517 doThrowOOME(env, "failed to allocate pixels for alpha"); 518 return NULL; 519 } 520 if (offsetXY != 0 && env->GetArrayLength(offsetXY) >= 2) { 521 int* array = env->GetIntArrayElements(offsetXY, NULL); 522 array[0] = offset.fX; 523 array[1] = offset.fY; 524 env->ReleaseIntArrayElements(offsetXY, array, 0); 525 } 526 527 return GraphicsJNI::createBitmap(env, dst, allocator.getStorageObj(), true, NULL, NULL); 528} 529 530/////////////////////////////////////////////////////////////////////////////// 531 532static int Bitmap_getPixel(JNIEnv* env, jobject, const SkBitmap* bitmap, 533 int x, int y) { 534 SkAutoLockPixels alp(*bitmap); 535 536 ToColorProc proc = ChooseToColorProc(*bitmap); 537 if (NULL == proc) { 538 return 0; 539 } 540 const void* src = bitmap->getAddr(x, y); 541 if (NULL == src) { 542 return 0; 543 } 544 545 SkColor dst[1]; 546 proc(dst, src, 1, bitmap->getColorTable()); 547 return dst[0]; 548} 549 550static void Bitmap_getPixels(JNIEnv* env, jobject, const SkBitmap* bitmap, 551 jintArray pixelArray, int offset, int stride, 552 int x, int y, int width, int height) { 553 SkAutoLockPixels alp(*bitmap); 554 555 ToColorProc proc = ChooseToColorProc(*bitmap); 556 if (NULL == proc) { 557 return; 558 } 559 const void* src = bitmap->getAddr(x, y); 560 if (NULL == src) { 561 return; 562 } 563 564 SkColorTable* ctable = bitmap->getColorTable(); 565 jint* dst = env->GetIntArrayElements(pixelArray, NULL); 566 SkColor* d = (SkColor*)dst + offset; 567 while (--height >= 0) { 568 proc(d, src, width, ctable); 569 d += stride; 570 src = (void*)((const char*)src + bitmap->rowBytes()); 571 } 572 env->ReleaseIntArrayElements(pixelArray, dst, 0); 573} 574 575/////////////////////////////////////////////////////////////////////////////// 576 577static void Bitmap_setPixel(JNIEnv* env, jobject, const SkBitmap* bitmap, 578 int x, int y, SkColor color) { 579 SkAutoLockPixels alp(*bitmap); 580 if (NULL == bitmap->getPixels()) { 581 return; 582 } 583 584 FromColorProc proc = ChooseFromColorProc(bitmap->config()); 585 if (NULL == proc) { 586 return; 587 } 588 589 proc(bitmap->getAddr(x, y), &color, 1, x, y); 590 bitmap->notifyPixelsChanged(); 591} 592 593static void Bitmap_setPixels(JNIEnv* env, jobject, const SkBitmap* bitmap, 594 jintArray pixelArray, int offset, int stride, 595 int x, int y, int width, int height) { 596 GraphicsJNI::SetPixels(env, pixelArray, offset, stride, 597 x, y, width, height, *bitmap); 598} 599 600static void Bitmap_copyPixelsToBuffer(JNIEnv* env, jobject, 601 const SkBitmap* bitmap, jobject jbuffer) { 602 SkAutoLockPixels alp(*bitmap); 603 const void* src = bitmap->getPixels(); 604 605 if (NULL != src) { 606 android::AutoBufferPointer abp(env, jbuffer, JNI_TRUE); 607 608 // the java side has already checked that buffer is large enough 609 memcpy(abp.pointer(), src, bitmap->getSize()); 610 } 611} 612 613static void Bitmap_copyPixelsFromBuffer(JNIEnv* env, jobject, 614 const SkBitmap* bitmap, jobject jbuffer) { 615 SkAutoLockPixels alp(*bitmap); 616 void* dst = bitmap->getPixels(); 617 618 if (NULL != dst) { 619 android::AutoBufferPointer abp(env, jbuffer, JNI_FALSE); 620 // the java side has already checked that buffer is large enough 621 memcpy(dst, abp.pointer(), bitmap->getSize()); 622 bitmap->notifyPixelsChanged(); 623 } 624} 625 626static bool Bitmap_sameAs(JNIEnv* env, jobject, const SkBitmap* bm0, 627 const SkBitmap* bm1) { 628 if (bm0->width() != bm1->width() || 629 bm0->height() != bm1->height() || 630 bm0->config() != bm1->config()) { 631 return false; 632 } 633 634 SkAutoLockPixels alp0(*bm0); 635 SkAutoLockPixels alp1(*bm1); 636 637 // if we can't load the pixels, return false 638 if (NULL == bm0->getPixels() || NULL == bm1->getPixels()) { 639 return false; 640 } 641 642 if (bm0->config() == SkBitmap::kIndex8_Config) { 643 SkColorTable* ct0 = bm0->getColorTable(); 644 SkColorTable* ct1 = bm1->getColorTable(); 645 if (NULL == ct0 || NULL == ct1) { 646 return false; 647 } 648 if (ct0->count() != ct1->count()) { 649 return false; 650 } 651 652 SkAutoLockColors alc0(ct0); 653 SkAutoLockColors alc1(ct1); 654 const size_t size = ct0->count() * sizeof(SkPMColor); 655 if (memcmp(alc0.colors(), alc1.colors(), size) != 0) { 656 return false; 657 } 658 } 659 660 // now compare each scanline. We can't do the entire buffer at once, 661 // since we don't care about the pixel values that might extend beyond 662 // the width (since the scanline might be larger than the logical width) 663 const int h = bm0->height(); 664 const size_t size = bm0->width() * bm0->bytesPerPixel(); 665 for (int y = 0; y < h; y++) { 666 if (memcmp(bm0->getAddr(0, y), bm1->getAddr(0, y), size) != 0) { 667 return false; 668 } 669 } 670 return true; 671} 672 673static void Bitmap_prepareToDraw(JNIEnv* env, jobject, SkBitmap* bitmap) { 674 bitmap->lockPixels(); 675 bitmap->unlockPixels(); 676} 677 678/////////////////////////////////////////////////////////////////////////////// 679 680#include <android_runtime/AndroidRuntime.h> 681 682static JNINativeMethod gBitmapMethods[] = { 683 { "nativeCreate", "([IIIIIIZ)Landroid/graphics/Bitmap;", 684 (void*)Bitmap_creator }, 685 { "nativeCopy", "(IIZ)Landroid/graphics/Bitmap;", 686 (void*)Bitmap_copy }, 687 { "nativeDestructor", "(I)V", (void*)Bitmap_destructor }, 688 { "nativeRecycle", "(I)Z", (void*)Bitmap_recycle }, 689 { "nativeReconfigure", "(IIIII)V", (void*)Bitmap_reconfigure }, 690 { "nativeCompress", "(IIILjava/io/OutputStream;[B)Z", 691 (void*)Bitmap_compress }, 692 { "nativeErase", "(II)V", (void*)Bitmap_erase }, 693 { "nativeWidth", "(I)I", (void*)Bitmap_width }, 694 { "nativeHeight", "(I)I", (void*)Bitmap_height }, 695 { "nativeRowBytes", "(I)I", (void*)Bitmap_rowBytes }, 696 { "nativeConfig", "(I)I", (void*)Bitmap_config }, 697 { "nativeHasAlpha", "(I)Z", (void*)Bitmap_hasAlpha }, 698 { "nativeSetHasAlpha", "(IZ)V", (void*)Bitmap_setHasAlpha }, 699 { "nativeHasMipMap", "(I)Z", (void*)Bitmap_hasMipMap }, 700 { "nativeSetHasMipMap", "(IZ)V", (void*)Bitmap_setHasMipMap }, 701 { "nativeCreateFromParcel", 702 "(Landroid/os/Parcel;)Landroid/graphics/Bitmap;", 703 (void*)Bitmap_createFromParcel }, 704 { "nativeWriteToParcel", "(IZILandroid/os/Parcel;)Z", 705 (void*)Bitmap_writeToParcel }, 706 { "nativeExtractAlpha", "(II[I)Landroid/graphics/Bitmap;", 707 (void*)Bitmap_extractAlpha }, 708 { "nativeGenerationId", "(I)I", (void*)Bitmap_getGenerationId }, 709 { "nativeGetPixel", "(III)I", (void*)Bitmap_getPixel }, 710 { "nativeGetPixels", "(I[IIIIIII)V", (void*)Bitmap_getPixels }, 711 { "nativeSetPixel", "(IIII)V", (void*)Bitmap_setPixel }, 712 { "nativeSetPixels", "(I[IIIIIII)V", (void*)Bitmap_setPixels }, 713 { "nativeCopyPixelsToBuffer", "(ILjava/nio/Buffer;)V", 714 (void*)Bitmap_copyPixelsToBuffer }, 715 { "nativeCopyPixelsFromBuffer", "(ILjava/nio/Buffer;)V", 716 (void*)Bitmap_copyPixelsFromBuffer }, 717 { "nativeSameAs", "(II)Z", (void*)Bitmap_sameAs }, 718 { "nativePrepareToDraw", "(I)V", (void*)Bitmap_prepareToDraw }, 719}; 720 721#define kClassPathName "android/graphics/Bitmap" 722 723int register_android_graphics_Bitmap(JNIEnv* env) 724{ 725 return android::AndroidRuntime::registerNativeMethods(env, kClassPathName, 726 gBitmapMethods, SK_ARRAY_COUNT(gBitmapMethods)); 727} 728