BitmapFactory.cpp revision 4147877b388eb4a6f4e1ee116edfa58a018891ca
1#define LOG_TAG "BitmapFactory" 2 3#include "BitmapFactory.h" 4#include "NinePatchPeeker.h" 5#include "SkFrontBufferedStream.h" 6#include "SkImageDecoder.h" 7#include "SkMath.h" 8#include "SkPixelRef.h" 9#include "SkStream.h" 10#include "SkTemplates.h" 11#include "SkUtils.h" 12#include "CreateJavaOutputStreamAdaptor.h" 13#include "AutoDecodeCancel.h" 14#include "Utils.h" 15#include "JNIHelp.h" 16#include "GraphicsJNI.h" 17 18#include "core_jni_helpers.h" 19#include <androidfw/Asset.h> 20#include <androidfw/ResourceTypes.h> 21#include <cutils/compiler.h> 22#include <netinet/in.h> 23#include <stdio.h> 24#include <sys/mman.h> 25#include <sys/stat.h> 26 27jfieldID gOptions_justBoundsFieldID; 28jfieldID gOptions_sampleSizeFieldID; 29jfieldID gOptions_configFieldID; 30jfieldID gOptions_premultipliedFieldID; 31jfieldID gOptions_mutableFieldID; 32jfieldID gOptions_ditherFieldID; 33jfieldID gOptions_preferQualityOverSpeedFieldID; 34jfieldID gOptions_scaledFieldID; 35jfieldID gOptions_densityFieldID; 36jfieldID gOptions_screenDensityFieldID; 37jfieldID gOptions_targetDensityFieldID; 38jfieldID gOptions_widthFieldID; 39jfieldID gOptions_heightFieldID; 40jfieldID gOptions_mimeFieldID; 41jfieldID gOptions_mCancelID; 42jfieldID gOptions_bitmapFieldID; 43 44jfieldID gBitmap_ninePatchInsetsFieldID; 45 46jclass gInsetStruct_class; 47jmethodID gInsetStruct_constructorMethodID; 48 49using namespace android; 50 51jstring getMimeTypeString(JNIEnv* env, SkImageDecoder::Format format) { 52 static const struct { 53 SkImageDecoder::Format fFormat; 54 const char* fMimeType; 55 } gMimeTypes[] = { 56 { SkImageDecoder::kBMP_Format, "image/bmp" }, 57 { SkImageDecoder::kGIF_Format, "image/gif" }, 58 { SkImageDecoder::kICO_Format, "image/x-ico" }, 59 { SkImageDecoder::kJPEG_Format, "image/jpeg" }, 60 { SkImageDecoder::kPNG_Format, "image/png" }, 61 { SkImageDecoder::kWEBP_Format, "image/webp" }, 62 { SkImageDecoder::kWBMP_Format, "image/vnd.wap.wbmp" } 63 }; 64 65 const char* cstr = nullptr; 66 for (size_t i = 0; i < SK_ARRAY_COUNT(gMimeTypes); i++) { 67 if (gMimeTypes[i].fFormat == format) { 68 cstr = gMimeTypes[i].fMimeType; 69 break; 70 } 71 } 72 73 jstring jstr = nullptr; 74 if (cstr != nullptr) { 75 // NOTE: Caller should env->ExceptionCheck() for OOM 76 // (can't check for nullptr as it's a valid return value) 77 jstr = env->NewStringUTF(cstr); 78 } 79 return jstr; 80} 81 82static bool optionsJustBounds(JNIEnv* env, jobject options) { 83 return options != NULL && env->GetBooleanField(options, gOptions_justBoundsFieldID); 84} 85 86static void scaleDivRange(int32_t* divs, int count, float scale, int maxValue) { 87 for (int i = 0; i < count; i++) { 88 divs[i] = int32_t(divs[i] * scale + 0.5f); 89 if (i > 0 && divs[i] == divs[i - 1]) { 90 divs[i]++; // avoid collisions 91 } 92 } 93 94 if (CC_UNLIKELY(divs[count - 1] > maxValue)) { 95 // if the collision avoidance above put some divs outside the bounds of the bitmap, 96 // slide outer stretchable divs inward to stay within bounds 97 int highestAvailable = maxValue; 98 for (int i = count - 1; i >= 0; i--) { 99 divs[i] = highestAvailable; 100 if (i > 0 && divs[i] <= divs[i-1]){ 101 // keep shifting 102 highestAvailable = divs[i] - 1; 103 } else { 104 break; 105 } 106 } 107 } 108} 109 110static void scaleNinePatchChunk(android::Res_png_9patch* chunk, float scale, 111 int scaledWidth, int scaledHeight) { 112 chunk->paddingLeft = int(chunk->paddingLeft * scale + 0.5f); 113 chunk->paddingTop = int(chunk->paddingTop * scale + 0.5f); 114 chunk->paddingRight = int(chunk->paddingRight * scale + 0.5f); 115 chunk->paddingBottom = int(chunk->paddingBottom * scale + 0.5f); 116 117 scaleDivRange(chunk->getXDivs(), chunk->numXDivs, scale, scaledWidth); 118 scaleDivRange(chunk->getYDivs(), chunk->numYDivs, scale, scaledHeight); 119} 120 121static SkColorType colorTypeForScaledOutput(SkColorType colorType) { 122 switch (colorType) { 123 case kUnknown_SkColorType: 124 case kIndex_8_SkColorType: 125 return kN32_SkColorType; 126 default: 127 break; 128 } 129 return colorType; 130} 131 132class ScaleCheckingAllocator : public SkBitmap::HeapAllocator { 133public: 134 ScaleCheckingAllocator(float scale, int size) 135 : mScale(scale), mSize(size) { 136 } 137 138 virtual bool allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) { 139 // accounts for scale in final allocation, using eventual size and config 140 const int bytesPerPixel = SkColorTypeBytesPerPixel( 141 colorTypeForScaledOutput(bitmap->colorType())); 142 const int requestedSize = bytesPerPixel * 143 int(bitmap->width() * mScale + 0.5f) * 144 int(bitmap->height() * mScale + 0.5f); 145 if (requestedSize > mSize) { 146 ALOGW("bitmap for alloc reuse (%d bytes) can't fit scaled bitmap (%d bytes)", 147 mSize, requestedSize); 148 return false; 149 } 150 return SkBitmap::HeapAllocator::allocPixelRef(bitmap, ctable); 151 } 152private: 153 const float mScale; 154 const int mSize; 155}; 156 157class RecyclingPixelAllocator : public SkBitmap::Allocator { 158public: 159 RecyclingPixelAllocator(SkPixelRef* pixelRef, unsigned int size) 160 : mPixelRef(pixelRef), mSize(size) { 161 SkSafeRef(mPixelRef); 162 } 163 164 ~RecyclingPixelAllocator() { 165 SkSafeUnref(mPixelRef); 166 } 167 168 virtual bool allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) { 169 const SkImageInfo& info = bitmap->info(); 170 if (info.fColorType == kUnknown_SkColorType) { 171 ALOGW("unable to reuse a bitmap as the target has an unknown bitmap configuration"); 172 return false; 173 } 174 175 const int64_t size64 = info.getSafeSize64(bitmap->rowBytes()); 176 if (!sk_64_isS32(size64)) { 177 ALOGW("bitmap is too large"); 178 return false; 179 } 180 181 const size_t size = sk_64_asS32(size64); 182 if (size > mSize) { 183 ALOGW("bitmap marked for reuse (%u bytes) can't fit new bitmap " 184 "(%zu bytes)", mSize, size); 185 return false; 186 } 187 188 // Create a new pixelref with the new ctable that wraps the previous pixelref 189 SkPixelRef* pr = new AndroidPixelRef(*static_cast<AndroidPixelRef*>(mPixelRef), 190 info, bitmap->rowBytes(), ctable); 191 192 bitmap->setPixelRef(pr)->unref(); 193 // since we're already allocated, we lockPixels right away 194 // HeapAllocator/JavaPixelAllocator behaves this way too 195 bitmap->lockPixels(); 196 return true; 197 } 198 199private: 200 SkPixelRef* const mPixelRef; 201 const unsigned int mSize; 202}; 203 204static jobject doDecode(JNIEnv* env, SkStreamRewindable* stream, jobject padding, jobject options) { 205 206 int sampleSize = 1; 207 208 SkImageDecoder::Mode decodeMode = SkImageDecoder::kDecodePixels_Mode; 209 SkColorType prefColorType = kN32_SkColorType; 210 211 bool doDither = true; 212 bool isMutable = false; 213 float scale = 1.0f; 214 bool preferQualityOverSpeed = false; 215 bool requireUnpremultiplied = false; 216 217 jobject javaBitmap = NULL; 218 219 if (options != NULL) { 220 sampleSize = env->GetIntField(options, gOptions_sampleSizeFieldID); 221 if (optionsJustBounds(env, options)) { 222 decodeMode = SkImageDecoder::kDecodeBounds_Mode; 223 } 224 225 // initialize these, in case we fail later on 226 env->SetIntField(options, gOptions_widthFieldID, -1); 227 env->SetIntField(options, gOptions_heightFieldID, -1); 228 env->SetObjectField(options, gOptions_mimeFieldID, 0); 229 230 jobject jconfig = env->GetObjectField(options, gOptions_configFieldID); 231 prefColorType = GraphicsJNI::getNativeBitmapColorType(env, jconfig); 232 isMutable = env->GetBooleanField(options, gOptions_mutableFieldID); 233 doDither = env->GetBooleanField(options, gOptions_ditherFieldID); 234 preferQualityOverSpeed = env->GetBooleanField(options, 235 gOptions_preferQualityOverSpeedFieldID); 236 requireUnpremultiplied = !env->GetBooleanField(options, gOptions_premultipliedFieldID); 237 javaBitmap = env->GetObjectField(options, gOptions_bitmapFieldID); 238 239 if (env->GetBooleanField(options, gOptions_scaledFieldID)) { 240 const int density = env->GetIntField(options, gOptions_densityFieldID); 241 const int targetDensity = env->GetIntField(options, gOptions_targetDensityFieldID); 242 const int screenDensity = env->GetIntField(options, gOptions_screenDensityFieldID); 243 if (density != 0 && targetDensity != 0 && density != screenDensity) { 244 scale = (float) targetDensity / density; 245 } 246 } 247 } 248 249 const bool willScale = scale != 1.0f; 250 251 SkImageDecoder* decoder = SkImageDecoder::Factory(stream); 252 if (decoder == NULL) { 253 return nullObjectReturn("SkImageDecoder::Factory returned null"); 254 } 255 256 decoder->setSampleSize(sampleSize); 257 decoder->setDitherImage(doDither); 258 decoder->setPreferQualityOverSpeed(preferQualityOverSpeed); 259 decoder->setRequireUnpremultipliedColors(requireUnpremultiplied); 260 261 SkBitmap* outputBitmap = NULL; 262 unsigned int existingBufferSize = 0; 263 if (javaBitmap != NULL) { 264 outputBitmap = GraphicsJNI::getSkBitmap(env, javaBitmap); 265 if (outputBitmap->isImmutable()) { 266 ALOGW("Unable to reuse an immutable bitmap as an image decoder target."); 267 javaBitmap = NULL; 268 outputBitmap = NULL; 269 } else { 270 existingBufferSize = GraphicsJNI::getBitmapAllocationByteCount(env, javaBitmap); 271 } 272 } 273 274 SkAutoTDelete<SkBitmap> adb(outputBitmap == NULL ? new SkBitmap : NULL); 275 if (outputBitmap == NULL) outputBitmap = adb.get(); 276 277 NinePatchPeeker peeker(decoder); 278 decoder->setPeeker(&peeker); 279 280 JavaPixelAllocator javaAllocator(env); 281 RecyclingPixelAllocator recyclingAllocator(outputBitmap->pixelRef(), existingBufferSize); 282 ScaleCheckingAllocator scaleCheckingAllocator(scale, existingBufferSize); 283 SkBitmap::Allocator* outputAllocator = (javaBitmap != NULL) ? 284 (SkBitmap::Allocator*)&recyclingAllocator : (SkBitmap::Allocator*)&javaAllocator; 285 if (decodeMode != SkImageDecoder::kDecodeBounds_Mode) { 286 if (!willScale) { 287 // If the java allocator is being used to allocate the pixel memory, the decoder 288 // need not write zeroes, since the memory is initialized to 0. 289 decoder->setSkipWritingZeroes(outputAllocator == &javaAllocator); 290 decoder->setAllocator(outputAllocator); 291 } else if (javaBitmap != NULL) { 292 // check for eventual scaled bounds at allocation time, so we don't decode the bitmap 293 // only to find the scaled result too large to fit in the allocation 294 decoder->setAllocator(&scaleCheckingAllocator); 295 } 296 } 297 298 // Only setup the decoder to be deleted after its stack-based, refcounted 299 // components (allocators, peekers, etc) are declared. This prevents RefCnt 300 // asserts from firing due to the order objects are deleted from the stack. 301 SkAutoTDelete<SkImageDecoder> add(decoder); 302 303 AutoDecoderCancel adc(options, decoder); 304 305 // To fix the race condition in case "requestCancelDecode" 306 // happens earlier than AutoDecoderCancel object is added 307 // to the gAutoDecoderCancelMutex linked list. 308 if (options != NULL && env->GetBooleanField(options, gOptions_mCancelID)) { 309 return nullObjectReturn("gOptions_mCancelID"); 310 } 311 312 SkBitmap decodingBitmap; 313 if (decoder->decode(stream, &decodingBitmap, prefColorType, decodeMode) 314 != SkImageDecoder::kSuccess) { 315 return nullObjectReturn("decoder->decode returned false"); 316 } 317 318 int scaledWidth = decodingBitmap.width(); 319 int scaledHeight = decodingBitmap.height(); 320 321 if (willScale && decodeMode != SkImageDecoder::kDecodeBounds_Mode) { 322 scaledWidth = int(scaledWidth * scale + 0.5f); 323 scaledHeight = int(scaledHeight * scale + 0.5f); 324 } 325 326 // update options (if any) 327 if (options != NULL) { 328 jstring mimeType = getMimeTypeString(env, decoder->getFormat()); 329 if (env->ExceptionCheck()) { 330 return nullObjectReturn("OOM in getMimeTypeString()"); 331 } 332 env->SetIntField(options, gOptions_widthFieldID, scaledWidth); 333 env->SetIntField(options, gOptions_heightFieldID, scaledHeight); 334 env->SetObjectField(options, gOptions_mimeFieldID, mimeType); 335 } 336 337 // if we're in justBounds mode, return now (skip the java bitmap) 338 if (decodeMode == SkImageDecoder::kDecodeBounds_Mode) { 339 return NULL; 340 } 341 342 jbyteArray ninePatchChunk = NULL; 343 if (peeker.mPatch != NULL) { 344 if (willScale) { 345 scaleNinePatchChunk(peeker.mPatch, scale, scaledWidth, scaledHeight); 346 } 347 348 size_t ninePatchArraySize = peeker.mPatch->serializedSize(); 349 ninePatchChunk = env->NewByteArray(ninePatchArraySize); 350 if (ninePatchChunk == NULL) { 351 return nullObjectReturn("ninePatchChunk == null"); 352 } 353 354 jbyte* array = (jbyte*) env->GetPrimitiveArrayCritical(ninePatchChunk, NULL); 355 if (array == NULL) { 356 return nullObjectReturn("primitive array == null"); 357 } 358 359 memcpy(array, peeker.mPatch, peeker.mPatchSize); 360 env->ReleasePrimitiveArrayCritical(ninePatchChunk, array, 0); 361 } 362 363 jobject ninePatchInsets = NULL; 364 if (peeker.mHasInsets) { 365 ninePatchInsets = env->NewObject(gInsetStruct_class, gInsetStruct_constructorMethodID, 366 peeker.mOpticalInsets[0], peeker.mOpticalInsets[1], peeker.mOpticalInsets[2], peeker.mOpticalInsets[3], 367 peeker.mOutlineInsets[0], peeker.mOutlineInsets[1], peeker.mOutlineInsets[2], peeker.mOutlineInsets[3], 368 peeker.mOutlineRadius, peeker.mOutlineAlpha, scale); 369 if (ninePatchInsets == NULL) { 370 return nullObjectReturn("nine patch insets == null"); 371 } 372 if (javaBitmap != NULL) { 373 env->SetObjectField(javaBitmap, gBitmap_ninePatchInsetsFieldID, ninePatchInsets); 374 } 375 } 376 377 if (willScale) { 378 // This is weird so let me explain: we could use the scale parameter 379 // directly, but for historical reasons this is how the corresponding 380 // Dalvik code has always behaved. We simply recreate the behavior here. 381 // The result is slightly different from simply using scale because of 382 // the 0.5f rounding bias applied when computing the target image size 383 const float sx = scaledWidth / float(decodingBitmap.width()); 384 const float sy = scaledHeight / float(decodingBitmap.height()); 385 386 // TODO: avoid copying when scaled size equals decodingBitmap size 387 SkColorType colorType = colorTypeForScaledOutput(decodingBitmap.colorType()); 388 // FIXME: If the alphaType is kUnpremul and the image has alpha, the 389 // colors may not be correct, since Skia does not yet support drawing 390 // to/from unpremultiplied bitmaps. 391 outputBitmap->setInfo(SkImageInfo::Make(scaledWidth, scaledHeight, 392 colorType, decodingBitmap.alphaType())); 393 if (!outputBitmap->tryAllocPixels(outputAllocator, NULL)) { 394 return nullObjectReturn("allocation failed for scaled bitmap"); 395 } 396 397 // If outputBitmap's pixels are newly allocated by Java, there is no need 398 // to erase to 0, since the pixels were initialized to 0. 399 if (outputAllocator != &javaAllocator) { 400 outputBitmap->eraseColor(0); 401 } 402 403 SkPaint paint; 404 paint.setFilterQuality(kLow_SkFilterQuality); 405 406 SkCanvas canvas(*outputBitmap); 407 canvas.scale(sx, sy); 408 canvas.drawBitmap(decodingBitmap, 0.0f, 0.0f, &paint); 409 } else { 410 outputBitmap->swap(decodingBitmap); 411 } 412 413 if (padding) { 414 if (peeker.mPatch != NULL) { 415 GraphicsJNI::set_jrect(env, padding, 416 peeker.mPatch->paddingLeft, peeker.mPatch->paddingTop, 417 peeker.mPatch->paddingRight, peeker.mPatch->paddingBottom); 418 } else { 419 GraphicsJNI::set_jrect(env, padding, -1, -1, -1, -1); 420 } 421 } 422 423 // if we get here, we're in kDecodePixels_Mode and will therefore 424 // already have a pixelref installed. 425 if (outputBitmap->pixelRef() == NULL) { 426 return nullObjectReturn("Got null SkPixelRef"); 427 } 428 429 if (!isMutable && javaBitmap == NULL) { 430 // promise we will never change our pixels (great for sharing and pictures) 431 outputBitmap->setImmutable(); 432 } 433 434 // detach bitmap from its autodeleter, since we want to own it now 435 adb.detach(); 436 437 if (javaBitmap != NULL) { 438 bool isPremultiplied = !requireUnpremultiplied; 439 GraphicsJNI::reinitBitmap(env, javaBitmap, outputBitmap, isPremultiplied); 440 outputBitmap->notifyPixelsChanged(); 441 // If a java bitmap was passed in for reuse, pass it back 442 return javaBitmap; 443 } 444 445 int bitmapCreateFlags = 0x0; 446 if (isMutable) bitmapCreateFlags |= GraphicsJNI::kBitmapCreateFlag_Mutable; 447 if (!requireUnpremultiplied) bitmapCreateFlags |= GraphicsJNI::kBitmapCreateFlag_Premultiplied; 448 449 // now create the java bitmap 450 return GraphicsJNI::createBitmap(env, outputBitmap, javaAllocator.getStorageObj(), 451 bitmapCreateFlags, ninePatchChunk, ninePatchInsets, -1); 452} 453 454// Need to buffer enough input to be able to rewind as much as might be read by a decoder 455// trying to determine the stream's format. Currently the most is 64, read by 456// SkImageDecoder_libwebp. 457// FIXME: Get this number from SkImageDecoder 458#define BYTES_TO_BUFFER 64 459 460static jobject nativeDecodeStream(JNIEnv* env, jobject clazz, jobject is, jbyteArray storage, 461 jobject padding, jobject options) { 462 463 jobject bitmap = NULL; 464 SkAutoTDelete<SkStream> stream(CreateJavaInputStreamAdaptor(env, is, storage)); 465 466 if (stream.get()) { 467 SkAutoTDelete<SkStreamRewindable> bufferedStream( 468 SkFrontBufferedStream::Create(stream.detach(), BYTES_TO_BUFFER)); 469 SkASSERT(bufferedStream.get() != NULL); 470 bitmap = doDecode(env, bufferedStream, padding, options); 471 } 472 return bitmap; 473} 474 475static jobject nativeDecodeFileDescriptor(JNIEnv* env, jobject clazz, jobject fileDescriptor, 476 jobject padding, jobject bitmapFactoryOptions) { 477 478 NPE_CHECK_RETURN_ZERO(env, fileDescriptor); 479 480 int descriptor = jniGetFDFromFileDescriptor(env, fileDescriptor); 481 482 struct stat fdStat; 483 if (fstat(descriptor, &fdStat) == -1) { 484 doThrowIOE(env, "broken file descriptor"); 485 return nullObjectReturn("fstat return -1"); 486 } 487 488 // Restore the descriptor's offset on exiting this function. Even though 489 // we dup the descriptor, both the original and dup refer to the same open 490 // file description and changes to the file offset in one impact the other. 491 AutoFDSeek autoRestore(descriptor); 492 493 // Duplicate the descriptor here to prevent leaking memory. A leak occurs 494 // if we only close the file descriptor and not the file object it is used to 495 // create. If we don't explicitly clean up the file (which in turn closes the 496 // descriptor) the buffers allocated internally by fseek will be leaked. 497 int dupDescriptor = dup(descriptor); 498 499 FILE* file = fdopen(dupDescriptor, "r"); 500 if (file == NULL) { 501 // cleanup the duplicated descriptor since it will not be closed when the 502 // file is cleaned up (fclose). 503 close(dupDescriptor); 504 return nullObjectReturn("Could not open file"); 505 } 506 507 SkAutoTDelete<SkFILEStream> fileStream(new SkFILEStream(file, 508 SkFILEStream::kCallerPasses_Ownership)); 509 510 // Use a buffered stream. Although an SkFILEStream can be rewound, this 511 // ensures that SkImageDecoder::Factory never rewinds beyond the 512 // current position of the file descriptor. 513 SkAutoTDelete<SkStreamRewindable> stream(SkFrontBufferedStream::Create(fileStream.detach(), 514 BYTES_TO_BUFFER)); 515 516 return doDecode(env, stream, padding, bitmapFactoryOptions); 517} 518 519static jobject nativeDecodeAsset(JNIEnv* env, jobject clazz, jlong native_asset, 520 jobject padding, jobject options) { 521 522 Asset* asset = reinterpret_cast<Asset*>(native_asset); 523 // since we know we'll be done with the asset when we return, we can 524 // just use a simple wrapper 525 SkAutoTDelete<SkStreamRewindable> stream(new AssetStreamAdaptor(asset)); 526 return doDecode(env, stream, padding, options); 527} 528 529static jobject nativeDecodeByteArray(JNIEnv* env, jobject, jbyteArray byteArray, 530 jint offset, jint length, jobject options) { 531 532 AutoJavaByteArray ar(env, byteArray); 533 SkAutoTDelete<SkMemoryStream> stream(new SkMemoryStream(ar.ptr() + offset, length, false)); 534 return doDecode(env, stream, NULL, options); 535} 536 537static void nativeRequestCancel(JNIEnv*, jobject joptions) { 538 (void)AutoDecoderCancel::RequestCancel(joptions); 539} 540 541static jboolean nativeIsSeekable(JNIEnv* env, jobject, jobject fileDescriptor) { 542 jint descriptor = jniGetFDFromFileDescriptor(env, fileDescriptor); 543 return ::lseek64(descriptor, 0, SEEK_CUR) != -1 ? JNI_TRUE : JNI_FALSE; 544} 545 546jobject decodeBitmap(JNIEnv* env, void* data, size_t size) { 547 SkMemoryStream stream(data, size); 548 return doDecode(env, &stream, NULL, NULL); 549} 550 551/////////////////////////////////////////////////////////////////////////////// 552 553static JNINativeMethod gMethods[] = { 554 { "nativeDecodeStream", 555 "(Ljava/io/InputStream;[BLandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", 556 (void*)nativeDecodeStream 557 }, 558 559 { "nativeDecodeFileDescriptor", 560 "(Ljava/io/FileDescriptor;Landroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", 561 (void*)nativeDecodeFileDescriptor 562 }, 563 564 { "nativeDecodeAsset", 565 "(JLandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", 566 (void*)nativeDecodeAsset 567 }, 568 569 { "nativeDecodeByteArray", 570 "([BIILandroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", 571 (void*)nativeDecodeByteArray 572 }, 573 574 { "nativeIsSeekable", 575 "(Ljava/io/FileDescriptor;)Z", 576 (void*)nativeIsSeekable 577 }, 578}; 579 580static JNINativeMethod gOptionsMethods[] = { 581 { "requestCancel", "()V", (void*)nativeRequestCancel } 582}; 583 584int register_android_graphics_BitmapFactory(JNIEnv* env) { 585 jclass options_class = FindClassOrDie(env, "android/graphics/BitmapFactory$Options"); 586 gOptions_bitmapFieldID = GetFieldIDOrDie(env, options_class, "inBitmap", 587 "Landroid/graphics/Bitmap;"); 588 gOptions_justBoundsFieldID = GetFieldIDOrDie(env, options_class, "inJustDecodeBounds", "Z"); 589 gOptions_sampleSizeFieldID = GetFieldIDOrDie(env, options_class, "inSampleSize", "I"); 590 gOptions_configFieldID = GetFieldIDOrDie(env, options_class, "inPreferredConfig", 591 "Landroid/graphics/Bitmap$Config;"); 592 gOptions_premultipliedFieldID = GetFieldIDOrDie(env, options_class, "inPremultiplied", "Z"); 593 gOptions_mutableFieldID = GetFieldIDOrDie(env, options_class, "inMutable", "Z"); 594 gOptions_ditherFieldID = GetFieldIDOrDie(env, options_class, "inDither", "Z"); 595 gOptions_preferQualityOverSpeedFieldID = GetFieldIDOrDie(env, options_class, 596 "inPreferQualityOverSpeed", "Z"); 597 gOptions_scaledFieldID = GetFieldIDOrDie(env, options_class, "inScaled", "Z"); 598 gOptions_densityFieldID = GetFieldIDOrDie(env, options_class, "inDensity", "I"); 599 gOptions_screenDensityFieldID = GetFieldIDOrDie(env, options_class, "inScreenDensity", "I"); 600 gOptions_targetDensityFieldID = GetFieldIDOrDie(env, options_class, "inTargetDensity", "I"); 601 gOptions_widthFieldID = GetFieldIDOrDie(env, options_class, "outWidth", "I"); 602 gOptions_heightFieldID = GetFieldIDOrDie(env, options_class, "outHeight", "I"); 603 gOptions_mimeFieldID = GetFieldIDOrDie(env, options_class, "outMimeType", "Ljava/lang/String;"); 604 gOptions_mCancelID = GetFieldIDOrDie(env, options_class, "mCancel", "Z"); 605 606 jclass bitmap_class = FindClassOrDie(env, "android/graphics/Bitmap"); 607 gBitmap_ninePatchInsetsFieldID = GetFieldIDOrDie(env, bitmap_class, "mNinePatchInsets", 608 "Landroid/graphics/NinePatch$InsetStruct;"); 609 610 gInsetStruct_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, 611 "android/graphics/NinePatch$InsetStruct")); 612 gInsetStruct_constructorMethodID = GetMethodIDOrDie(env, gInsetStruct_class, "<init>", 613 "(IIIIIIIIFIF)V"); 614 615 android::RegisterMethodsOrDie(env, "android/graphics/BitmapFactory$Options", 616 gOptionsMethods, NELEM(gOptionsMethods)); 617 return android::RegisterMethodsOrDie(env, "android/graphics/BitmapFactory", 618 gMethods, NELEM(gMethods)); 619} 620