1 #define LOG_TAG "BitmapFactory"
2
3 #include "BitmapFactory.h"
4 #include "NinePatchPeeker.h"
5 #include "SkImageDecoder.h"
6 #include "SkImageRef_ashmem.h"
7 #include "SkImageRef_GlobalPool.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
17 #include <android_runtime/AndroidRuntime.h>
18 #include <androidfw/Asset.h>
19 #include <androidfw/ResourceTypes.h>
20 #include <netinet/in.h>
21 #include <sys/mman.h>
22 #include <sys/stat.h>
23
24 jfieldID gOptions_justBoundsFieldID;
25 jfieldID gOptions_sampleSizeFieldID;
26 jfieldID gOptions_configFieldID;
27 jfieldID gOptions_mutableFieldID;
28 jfieldID gOptions_ditherFieldID;
29 jfieldID gOptions_purgeableFieldID;
30 jfieldID gOptions_shareableFieldID;
31 jfieldID gOptions_preferQualityOverSpeedFieldID;
32 jfieldID gOptions_widthFieldID;
33 jfieldID gOptions_heightFieldID;
34 jfieldID gOptions_mimeFieldID;
35 jfieldID gOptions_mCancelID;
36 jfieldID gOptions_bitmapFieldID;
37 jfieldID gBitmap_nativeBitmapFieldID;
38 jfieldID gBitmap_layoutBoundsFieldID;
39
40 #if 0
41 #define TRACE_BITMAP(code) code
42 #else
43 #define TRACE_BITMAP(code)
44 #endif
45
46 using namespace android;
47
validOrNeg1(bool isValid,int32_t value)48 static inline int32_t validOrNeg1(bool isValid, int32_t value) {
49 // return isValid ? value : -1;
50 SkASSERT((int)isValid == 0 || (int)isValid == 1);
51 return ((int32_t)isValid - 1) | value;
52 }
53
getMimeTypeString(JNIEnv * env,SkImageDecoder::Format format)54 jstring getMimeTypeString(JNIEnv* env, SkImageDecoder::Format format) {
55 static const struct {
56 SkImageDecoder::Format fFormat;
57 const char* fMimeType;
58 } gMimeTypes[] = {
59 { SkImageDecoder::kBMP_Format, "image/bmp" },
60 { SkImageDecoder::kGIF_Format, "image/gif" },
61 { SkImageDecoder::kICO_Format, "image/x-ico" },
62 { SkImageDecoder::kJPEG_Format, "image/jpeg" },
63 { SkImageDecoder::kPNG_Format, "image/png" },
64 { SkImageDecoder::kWBMP_Format, "image/vnd.wap.wbmp" }
65 };
66
67 const char* cstr = NULL;
68 for (size_t i = 0; i < SK_ARRAY_COUNT(gMimeTypes); i++) {
69 if (gMimeTypes[i].fFormat == format) {
70 cstr = gMimeTypes[i].fMimeType;
71 break;
72 }
73 }
74
75 jstring jstr = 0;
76 if (NULL != cstr) {
77 jstr = env->NewStringUTF(cstr);
78 }
79 return jstr;
80 }
81
optionsPurgeable(JNIEnv * env,jobject options)82 static bool optionsPurgeable(JNIEnv* env, jobject options) {
83 return options != NULL && env->GetBooleanField(options, gOptions_purgeableFieldID);
84 }
85
optionsShareable(JNIEnv * env,jobject options)86 static bool optionsShareable(JNIEnv* env, jobject options) {
87 return options != NULL && env->GetBooleanField(options, gOptions_shareableFieldID);
88 }
89
optionsJustBounds(JNIEnv * env,jobject options)90 static bool optionsJustBounds(JNIEnv* env, jobject options) {
91 return options != NULL && env->GetBooleanField(options, gOptions_justBoundsFieldID);
92 }
93
scaleNinePatchChunk(android::Res_png_9patch * chunk,float scale)94 static void scaleNinePatchChunk(android::Res_png_9patch* chunk, float scale) {
95 chunk->paddingLeft = int(chunk->paddingLeft * scale + 0.5f);
96 chunk->paddingTop = int(chunk->paddingTop * scale + 0.5f);
97 chunk->paddingRight = int(chunk->paddingRight * scale + 0.5f);
98 chunk->paddingBottom = int(chunk->paddingBottom * scale + 0.5f);
99
100 for (int i = 0; i < chunk->numXDivs; i++) {
101 chunk->xDivs[i] = int(chunk->xDivs[i] * scale + 0.5f);
102 if (i > 0 && chunk->xDivs[i] == chunk->xDivs[i - 1]) {
103 chunk->xDivs[i]++;
104 }
105 }
106
107 for (int i = 0; i < chunk->numYDivs; i++) {
108 chunk->yDivs[i] = int(chunk->yDivs[i] * scale + 0.5f);
109 if (i > 0 && chunk->yDivs[i] == chunk->yDivs[i - 1]) {
110 chunk->yDivs[i]++;
111 }
112 }
113 }
114
nativeScaleNinePatch(JNIEnv * env,jobject,jbyteArray chunkObject,jfloat scale,jobject padding)115 static jbyteArray nativeScaleNinePatch(JNIEnv* env, jobject, jbyteArray chunkObject, jfloat scale,
116 jobject padding) {
117
118 jbyte* array = env->GetByteArrayElements(chunkObject, 0);
119 if (array != NULL) {
120 size_t chunkSize = env->GetArrayLength(chunkObject);
121 void* storage = alloca(chunkSize);
122 android::Res_png_9patch* chunk = static_cast<android::Res_png_9patch*>(storage);
123 memcpy(chunk, array, chunkSize);
124 android::Res_png_9patch::deserialize(chunk);
125
126 scaleNinePatchChunk(chunk, scale);
127 memcpy(array, chunk, chunkSize);
128
129 if (padding) {
130 GraphicsJNI::set_jrect(env, padding, chunk->paddingLeft, chunk->paddingTop,
131 chunk->paddingRight, chunk->paddingBottom);
132 }
133
134 env->ReleaseByteArrayElements(chunkObject, array, 0);
135 }
136 return chunkObject;
137 }
138
installPixelRef(SkBitmap * bitmap,SkStream * stream,int sampleSize,bool ditherImage)139 static SkPixelRef* installPixelRef(SkBitmap* bitmap, SkStream* stream,
140 int sampleSize, bool ditherImage) {
141
142 SkImageRef* pr;
143 // only use ashmem for large images, since mmaps come at a price
144 if (bitmap->getSize() >= 32 * 1024) {
145 pr = new SkImageRef_ashmem(stream, bitmap->config(), sampleSize);
146 } else {
147 pr = new SkImageRef_GlobalPool(stream, bitmap->config(), sampleSize);
148 }
149 pr->setDitherImage(ditherImage);
150 bitmap->setPixelRef(pr)->unref();
151 pr->isOpaque(bitmap);
152 return pr;
153 }
154
155 // since we "may" create a purgeable imageref, we require the stream be ref'able
156 // i.e. dynamically allocated, since its lifetime may exceed the current stack
157 // frame.
doDecode(JNIEnv * env,SkStream * stream,jobject padding,jobject options,bool allowPurgeable,bool forcePurgeable=false,bool applyScale=false,float scale=1.0f)158 static jobject doDecode(JNIEnv* env, SkStream* stream, jobject padding,
159 jobject options, bool allowPurgeable, bool forcePurgeable = false,
160 bool applyScale = false, float scale = 1.0f) {
161
162 int sampleSize = 1;
163
164 SkImageDecoder::Mode mode = SkImageDecoder::kDecodePixels_Mode;
165 SkBitmap::Config prefConfig = SkBitmap::kARGB_8888_Config;
166
167 bool doDither = true;
168 bool isMutable = false;
169 bool willScale = applyScale && scale != 1.0f;
170 bool isPurgeable = !willScale &&
171 (forcePurgeable || (allowPurgeable && optionsPurgeable(env, options)));
172 bool preferQualityOverSpeed = false;
173
174 jobject javaBitmap = NULL;
175
176 if (options != NULL) {
177 sampleSize = env->GetIntField(options, gOptions_sampleSizeFieldID);
178 if (optionsJustBounds(env, options)) {
179 mode = SkImageDecoder::kDecodeBounds_Mode;
180 }
181
182 // initialize these, in case we fail later on
183 env->SetIntField(options, gOptions_widthFieldID, -1);
184 env->SetIntField(options, gOptions_heightFieldID, -1);
185 env->SetObjectField(options, gOptions_mimeFieldID, 0);
186
187 jobject jconfig = env->GetObjectField(options, gOptions_configFieldID);
188 prefConfig = GraphicsJNI::getNativeBitmapConfig(env, jconfig);
189 isMutable = env->GetBooleanField(options, gOptions_mutableFieldID);
190 doDither = env->GetBooleanField(options, gOptions_ditherFieldID);
191 preferQualityOverSpeed = env->GetBooleanField(options,
192 gOptions_preferQualityOverSpeedFieldID);
193 javaBitmap = env->GetObjectField(options, gOptions_bitmapFieldID);
194 }
195
196 if (willScale && javaBitmap != NULL) {
197 return nullObjectReturn("Cannot pre-scale a reused bitmap");
198 }
199
200 SkImageDecoder* decoder = SkImageDecoder::Factory(stream);
201 if (decoder == NULL) {
202 return nullObjectReturn("SkImageDecoder::Factory returned null");
203 }
204
205 decoder->setSampleSize(sampleSize);
206 decoder->setDitherImage(doDither);
207 decoder->setPreferQualityOverSpeed(preferQualityOverSpeed);
208
209 NinePatchPeeker peeker(decoder);
210 JavaPixelAllocator javaAllocator(env);
211
212 SkBitmap* bitmap;
213 bool useExistingBitmap = false;
214 if (javaBitmap == NULL) {
215 bitmap = new SkBitmap;
216 } else {
217 if (sampleSize != 1) {
218 return nullObjectReturn("SkImageDecoder: Cannot reuse bitmap with sampleSize != 1");
219 }
220
221 bitmap = (SkBitmap*) env->GetIntField(javaBitmap, gBitmap_nativeBitmapFieldID);
222 // only reuse the provided bitmap if it is immutable
223 if (!bitmap->isImmutable()) {
224 useExistingBitmap = true;
225 // config of supplied bitmap overrules config set in options
226 prefConfig = bitmap->getConfig();
227 } else {
228 ALOGW("Unable to reuse an immutable bitmap as an image decoder target.");
229 bitmap = new SkBitmap;
230 }
231 }
232
233 SkAutoTDelete<SkImageDecoder> add(decoder);
234 SkAutoTDelete<SkBitmap> adb(!useExistingBitmap ? bitmap : NULL);
235
236 decoder->setPeeker(&peeker);
237 if (!isPurgeable) {
238 decoder->setAllocator(&javaAllocator);
239 }
240
241 AutoDecoderCancel adc(options, decoder);
242
243 // To fix the race condition in case "requestCancelDecode"
244 // happens earlier than AutoDecoderCancel object is added
245 // to the gAutoDecoderCancelMutex linked list.
246 if (options != NULL && env->GetBooleanField(options, gOptions_mCancelID)) {
247 return nullObjectReturn("gOptions_mCancelID");
248 }
249
250 SkImageDecoder::Mode decodeMode = mode;
251 if (isPurgeable) {
252 decodeMode = SkImageDecoder::kDecodeBounds_Mode;
253 }
254
255 SkBitmap* decoded;
256 if (willScale) {
257 decoded = new SkBitmap;
258 } else {
259 decoded = bitmap;
260 }
261 SkAutoTDelete<SkBitmap> adb2(willScale ? decoded : NULL);
262
263 if (!decoder->decode(stream, decoded, prefConfig, decodeMode, javaBitmap != NULL)) {
264 return nullObjectReturn("decoder->decode returned false");
265 }
266
267 int scaledWidth = decoded->width();
268 int scaledHeight = decoded->height();
269
270 if (willScale && mode != SkImageDecoder::kDecodeBounds_Mode) {
271 scaledWidth = int(scaledWidth * scale + 0.5f);
272 scaledHeight = int(scaledHeight * scale + 0.5f);
273 }
274
275 // update options (if any)
276 if (options != NULL) {
277 env->SetIntField(options, gOptions_widthFieldID, scaledWidth);
278 env->SetIntField(options, gOptions_heightFieldID, scaledHeight);
279 env->SetObjectField(options, gOptions_mimeFieldID,
280 getMimeTypeString(env, decoder->getFormat()));
281 }
282
283 // if we're in justBounds mode, return now (skip the java bitmap)
284 if (mode == SkImageDecoder::kDecodeBounds_Mode) {
285 return NULL;
286 }
287
288 jbyteArray ninePatchChunk = NULL;
289 if (peeker.fPatch != NULL) {
290 if (willScale) {
291 scaleNinePatchChunk(peeker.fPatch, scale);
292 }
293
294 size_t ninePatchArraySize = peeker.fPatch->serializedSize();
295 ninePatchChunk = env->NewByteArray(ninePatchArraySize);
296 if (ninePatchChunk == NULL) {
297 return nullObjectReturn("ninePatchChunk == null");
298 }
299
300 jbyte* array = (jbyte*) env->GetPrimitiveArrayCritical(ninePatchChunk, NULL);
301 if (array == NULL) {
302 return nullObjectReturn("primitive array == null");
303 }
304
305 peeker.fPatch->serialize(array);
306 env->ReleasePrimitiveArrayCritical(ninePatchChunk, array, 0);
307 }
308
309 jintArray layoutBounds = NULL;
310 if (peeker.fLayoutBounds != NULL) {
311 layoutBounds = env->NewIntArray(4);
312 if (layoutBounds == NULL) {
313 return nullObjectReturn("layoutBounds == null");
314 }
315
316 jint scaledBounds[4];
317 if (willScale) {
318 for (int i=0; i<4; i++) {
319 scaledBounds[i] = (jint)((((jint*)peeker.fLayoutBounds)[i]*scale) + .5f);
320 }
321 } else {
322 memcpy(scaledBounds, (jint*)peeker.fLayoutBounds, sizeof(scaledBounds));
323 }
324 env->SetIntArrayRegion(layoutBounds, 0, 4, scaledBounds);
325 if (javaBitmap != NULL) {
326 env->SetObjectField(javaBitmap, gBitmap_layoutBoundsFieldID, layoutBounds);
327 }
328 }
329
330 if (willScale) {
331 // This is weird so let me explain: we could use the scale parameter
332 // directly, but for historical reasons this is how the corresponding
333 // Dalvik code has always behaved. We simply recreate the behavior here.
334 // The result is slightly different from simply using scale because of
335 // the 0.5f rounding bias applied when computing the target image size
336 const float sx = scaledWidth / float(decoded->width());
337 const float sy = scaledHeight / float(decoded->height());
338
339 SkBitmap::Config config = decoded->config();
340 switch (config) {
341 case SkBitmap::kNo_Config:
342 case SkBitmap::kIndex8_Config:
343 case SkBitmap::kRLE_Index8_Config:
344 config = SkBitmap::kARGB_8888_Config;
345 break;
346 default:
347 break;
348 }
349
350 bitmap->setConfig(config, scaledWidth, scaledHeight);
351 bitmap->setIsOpaque(decoded->isOpaque());
352 if (!bitmap->allocPixels(&javaAllocator, NULL)) {
353 return nullObjectReturn("allocation failed for scaled bitmap");
354 }
355 bitmap->eraseColor(0);
356
357 SkPaint paint;
358 paint.setFilterBitmap(true);
359
360 SkCanvas canvas(*bitmap);
361 canvas.scale(sx, sy);
362 canvas.drawBitmap(*decoded, 0.0f, 0.0f, &paint);
363 }
364
365 if (padding) {
366 if (peeker.fPatch != NULL) {
367 GraphicsJNI::set_jrect(env, padding,
368 peeker.fPatch->paddingLeft, peeker.fPatch->paddingTop,
369 peeker.fPatch->paddingRight, peeker.fPatch->paddingBottom);
370 } else {
371 GraphicsJNI::set_jrect(env, padding, -1, -1, -1, -1);
372 }
373 }
374
375 SkPixelRef* pr;
376 if (isPurgeable) {
377 pr = installPixelRef(bitmap, stream, sampleSize, doDither);
378 } else {
379 // if we get here, we're in kDecodePixels_Mode and will therefore
380 // already have a pixelref installed.
381 pr = bitmap->pixelRef();
382 }
383 if (pr == NULL) {
384 return nullObjectReturn("Got null SkPixelRef");
385 }
386
387 if (!isMutable && !useExistingBitmap) {
388 // promise we will never change our pixels (great for sharing and pictures)
389 pr->setImmutable();
390 }
391
392 // detach bitmap from its autodeleter, since we want to own it now
393 adb.detach();
394
395 if (useExistingBitmap) {
396 // If a java bitmap was passed in for reuse, pass it back
397 return javaBitmap;
398 }
399 // now create the java bitmap
400 return GraphicsJNI::createBitmap(env, bitmap, javaAllocator.getStorageObj(),
401 isMutable, ninePatchChunk, layoutBounds, -1);
402 }
403
nativeDecodeStreamScaled(JNIEnv * env,jobject clazz,jobject is,jbyteArray storage,jobject padding,jobject options,jboolean applyScale,jfloat scale)404 static jobject nativeDecodeStreamScaled(JNIEnv* env, jobject clazz, jobject is, jbyteArray storage,
405 jobject padding, jobject options, jboolean applyScale, jfloat scale) {
406
407 jobject bitmap = NULL;
408 SkStream* stream = CreateJavaInputStreamAdaptor(env, is, storage, 0);
409
410 if (stream) {
411 // for now we don't allow purgeable with java inputstreams
412 bitmap = doDecode(env, stream, padding, options, false, false, applyScale, scale);
413 stream->unref();
414 }
415 return bitmap;
416 }
417
nativeDecodeStream(JNIEnv * env,jobject clazz,jobject is,jbyteArray storage,jobject padding,jobject options)418 static jobject nativeDecodeStream(JNIEnv* env, jobject clazz, jobject is, jbyteArray storage,
419 jobject padding, jobject options) {
420
421 return nativeDecodeStreamScaled(env, clazz, is, storage, padding, options, false, 1.0f);
422 }
423
getFDSize(int fd)424 static ssize_t getFDSize(int fd) {
425 off64_t curr = ::lseek64(fd, 0, SEEK_CUR);
426 if (curr < 0) {
427 return 0;
428 }
429 size_t size = ::lseek(fd, 0, SEEK_END);
430 ::lseek64(fd, curr, SEEK_SET);
431 return size;
432 }
433
nativeDecodeFileDescriptor(JNIEnv * env,jobject clazz,jobject fileDescriptor,jobject padding,jobject bitmapFactoryOptions)434 static jobject nativeDecodeFileDescriptor(JNIEnv* env, jobject clazz, jobject fileDescriptor,
435 jobject padding, jobject bitmapFactoryOptions) {
436
437 NPE_CHECK_RETURN_ZERO(env, fileDescriptor);
438
439 jint descriptor = jniGetFDFromFileDescriptor(env, fileDescriptor);
440
441 bool isPurgeable = optionsPurgeable(env, bitmapFactoryOptions);
442 bool isShareable = optionsShareable(env, bitmapFactoryOptions);
443 bool weOwnTheFD = false;
444 if (isPurgeable && isShareable) {
445 int newFD = ::dup(descriptor);
446 if (-1 != newFD) {
447 weOwnTheFD = true;
448 descriptor = newFD;
449 }
450 }
451
452 SkFDStream* stream = new SkFDStream(descriptor, weOwnTheFD);
453 SkAutoUnref aur(stream);
454 if (!stream->isValid()) {
455 return NULL;
456 }
457
458 /* Restore our offset when we leave, so we can be called more than once
459 with the same descriptor. This is only required if we didn't dup the
460 file descriptor, but it is OK to do it all the time.
461 */
462 AutoFDSeek as(descriptor);
463
464 /* Allow purgeable iff we own the FD, i.e., in the puregeable and
465 shareable case.
466 */
467 return doDecode(env, stream, padding, bitmapFactoryOptions, weOwnTheFD);
468 }
469
470 /* make a deep copy of the asset, and return it as a stream, or NULL if there
471 was an error.
472 */
copyAssetToStream(Asset * asset)473 static SkStream* copyAssetToStream(Asset* asset) {
474 // if we could "ref/reopen" the asset, we may not need to copy it here
475 off64_t size = asset->seek(0, SEEK_SET);
476 if ((off64_t)-1 == size) {
477 SkDebugf("---- copyAsset: asset rewind failed\n");
478 return NULL;
479 }
480
481 size = asset->getLength();
482 if (size <= 0) {
483 SkDebugf("---- copyAsset: asset->getLength() returned %d\n", size);
484 return NULL;
485 }
486
487 SkStream* stream = new SkMemoryStream(size);
488 void* data = const_cast<void*>(stream->getMemoryBase());
489 off64_t len = asset->read(data, size);
490 if (len != size) {
491 SkDebugf("---- copyAsset: asset->read(%d) returned %d\n", size, len);
492 delete stream;
493 stream = NULL;
494 }
495 return stream;
496 }
497
nativeDecodeAssetScaled(JNIEnv * env,jobject clazz,jint native_asset,jobject padding,jobject options,jboolean applyScale,jfloat scale)498 static jobject nativeDecodeAssetScaled(JNIEnv* env, jobject clazz, jint native_asset,
499 jobject padding, jobject options, jboolean applyScale, jfloat scale) {
500
501 SkStream* stream;
502 Asset* asset = reinterpret_cast<Asset*>(native_asset);
503 bool forcePurgeable = optionsPurgeable(env, options);
504 if (forcePurgeable) {
505 // if we could "ref/reopen" the asset, we may not need to copy it here
506 // and we could assume optionsShareable, since assets are always RO
507 stream = copyAssetToStream(asset);
508 if (stream == NULL) {
509 return NULL;
510 }
511 } else {
512 // since we know we'll be done with the asset when we return, we can
513 // just use a simple wrapper
514 stream = new AssetStreamAdaptor(asset);
515 }
516 SkAutoUnref aur(stream);
517 return doDecode(env, stream, padding, options, true, forcePurgeable, applyScale, scale);
518 }
519
nativeDecodeAsset(JNIEnv * env,jobject clazz,jint native_asset,jobject padding,jobject options)520 static jobject nativeDecodeAsset(JNIEnv* env, jobject clazz, jint native_asset,
521 jobject padding, jobject options) {
522
523 return nativeDecodeAssetScaled(env, clazz, native_asset, padding, options, false, 1.0f);
524 }
525
nativeDecodeByteArray(JNIEnv * env,jobject,jbyteArray byteArray,int offset,int length,jobject options)526 static jobject nativeDecodeByteArray(JNIEnv* env, jobject, jbyteArray byteArray,
527 int offset, int length, jobject options) {
528
529 /* If optionsShareable() we could decide to just wrap the java array and
530 share it, but that means adding a globalref to the java array object
531 and managing its lifetime. For now we just always copy the array's data
532 if optionsPurgeable(), unless we're just decoding bounds.
533 */
534 bool purgeable = optionsPurgeable(env, options) && !optionsJustBounds(env, options);
535 AutoJavaByteArray ar(env, byteArray);
536 SkStream* stream = new SkMemoryStream(ar.ptr() + offset, length, purgeable);
537 SkAutoUnref aur(stream);
538 return doDecode(env, stream, NULL, options, purgeable);
539 }
540
nativeRequestCancel(JNIEnv *,jobject joptions)541 static void nativeRequestCancel(JNIEnv*, jobject joptions) {
542 (void)AutoDecoderCancel::RequestCancel(joptions);
543 }
544
nativeIsSeekable(JNIEnv * env,jobject,jobject fileDescriptor)545 static jboolean nativeIsSeekable(JNIEnv* env, jobject, jobject fileDescriptor) {
546 jint descriptor = jniGetFDFromFileDescriptor(env, fileDescriptor);
547 return ::lseek64(descriptor, 0, SEEK_CUR) != -1 ? JNI_TRUE : JNI_FALSE;
548 }
549
550 ///////////////////////////////////////////////////////////////////////////////
551
552 static JNINativeMethod gMethods[] = {
553 { "nativeDecodeStream",
554 "(Ljava/io/InputStream;[BLandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;",
555 (void*)nativeDecodeStream
556 },
557 { "nativeDecodeStream",
558 "(Ljava/io/InputStream;[BLandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;ZF)Landroid/graphics/Bitmap;",
559 (void*)nativeDecodeStreamScaled
560 },
561
562 { "nativeDecodeFileDescriptor",
563 "(Ljava/io/FileDescriptor;Landroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;",
564 (void*)nativeDecodeFileDescriptor
565 },
566
567 { "nativeDecodeAsset",
568 "(ILandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;",
569 (void*)nativeDecodeAsset
570 },
571
572 { "nativeDecodeAsset",
573 "(ILandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;ZF)Landroid/graphics/Bitmap;",
574 (void*)nativeDecodeAssetScaled
575 },
576
577 { "nativeDecodeByteArray",
578 "([BIILandroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;",
579 (void*)nativeDecodeByteArray
580 },
581
582 { "nativeScaleNinePatch",
583 "([BFLandroid/graphics/Rect;)[B",
584 (void*)nativeScaleNinePatch
585 },
586
587 { "nativeIsSeekable",
588 "(Ljava/io/FileDescriptor;)Z",
589 (void*)nativeIsSeekable
590 },
591 };
592
593 static JNINativeMethod gOptionsMethods[] = {
594 { "requestCancel", "()V", (void*)nativeRequestCancel }
595 };
596
getFieldIDCheck(JNIEnv * env,jclass clazz,const char fieldname[],const char type[])597 static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz,
598 const char fieldname[], const char type[]) {
599 jfieldID id = env->GetFieldID(clazz, fieldname, type);
600 SkASSERT(id);
601 return id;
602 }
603
register_android_graphics_BitmapFactory(JNIEnv * env)604 int register_android_graphics_BitmapFactory(JNIEnv* env) {
605 jclass options_class = env->FindClass("android/graphics/BitmapFactory$Options");
606 SkASSERT(options_class);
607 gOptions_bitmapFieldID = getFieldIDCheck(env, options_class, "inBitmap",
608 "Landroid/graphics/Bitmap;");
609 gOptions_justBoundsFieldID = getFieldIDCheck(env, options_class, "inJustDecodeBounds", "Z");
610 gOptions_sampleSizeFieldID = getFieldIDCheck(env, options_class, "inSampleSize", "I");
611 gOptions_configFieldID = getFieldIDCheck(env, options_class, "inPreferredConfig",
612 "Landroid/graphics/Bitmap$Config;");
613 gOptions_mutableFieldID = getFieldIDCheck(env, options_class, "inMutable", "Z");
614 gOptions_ditherFieldID = getFieldIDCheck(env, options_class, "inDither", "Z");
615 gOptions_purgeableFieldID = getFieldIDCheck(env, options_class, "inPurgeable", "Z");
616 gOptions_shareableFieldID = getFieldIDCheck(env, options_class, "inInputShareable", "Z");
617 gOptions_preferQualityOverSpeedFieldID = getFieldIDCheck(env, options_class,
618 "inPreferQualityOverSpeed", "Z");
619 gOptions_widthFieldID = getFieldIDCheck(env, options_class, "outWidth", "I");
620 gOptions_heightFieldID = getFieldIDCheck(env, options_class, "outHeight", "I");
621 gOptions_mimeFieldID = getFieldIDCheck(env, options_class, "outMimeType", "Ljava/lang/String;");
622 gOptions_mCancelID = getFieldIDCheck(env, options_class, "mCancel", "Z");
623
624 jclass bitmap_class = env->FindClass("android/graphics/Bitmap");
625 SkASSERT(bitmap_class);
626 gBitmap_nativeBitmapFieldID = getFieldIDCheck(env, bitmap_class, "mNativeBitmap", "I");
627 gBitmap_layoutBoundsFieldID = getFieldIDCheck(env, bitmap_class, "mLayoutBounds", "[I");
628 int ret = AndroidRuntime::registerNativeMethods(env,
629 "android/graphics/BitmapFactory$Options",
630 gOptionsMethods,
631 SK_ARRAY_COUNT(gOptionsMethods));
632 if (ret) {
633 return ret;
634 }
635 return android::AndroidRuntime::registerNativeMethods(env, "android/graphics/BitmapFactory",
636 gMethods, SK_ARRAY_COUNT(gMethods));
637 }
638