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
24jfieldID gOptions_justBoundsFieldID;
25jfieldID gOptions_sampleSizeFieldID;
26jfieldID gOptions_configFieldID;
27jfieldID gOptions_mutableFieldID;
28jfieldID gOptions_ditherFieldID;
29jfieldID gOptions_purgeableFieldID;
30jfieldID gOptions_shareableFieldID;
31jfieldID gOptions_preferQualityOverSpeedFieldID;
32jfieldID gOptions_widthFieldID;
33jfieldID gOptions_heightFieldID;
34jfieldID gOptions_mimeFieldID;
35jfieldID gOptions_mCancelID;
36jfieldID gOptions_bitmapFieldID;
37jfieldID gBitmap_nativeBitmapFieldID;
38jfieldID gBitmap_layoutBoundsFieldID;
39
40#if 0
41    #define TRACE_BITMAP(code)  code
42#else
43    #define TRACE_BITMAP(code)
44#endif
45
46using namespace android;
47
48static 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
54jstring 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
82static bool optionsPurgeable(JNIEnv* env, jobject options) {
83    return options != NULL && env->GetBooleanField(options, gOptions_purgeableFieldID);
84}
85
86static bool optionsShareable(JNIEnv* env, jobject options) {
87    return options != NULL && env->GetBooleanField(options, gOptions_shareableFieldID);
88}
89
90static bool optionsJustBounds(JNIEnv* env, jobject options) {
91    return options != NULL && env->GetBooleanField(options, gOptions_justBoundsFieldID);
92}
93
94static 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
115static 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
139static 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.
158static 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    if (javaBitmap == NULL) {
214        bitmap = new SkBitmap;
215    } else {
216        if (sampleSize != 1) {
217            return nullObjectReturn("SkImageDecoder: Cannot reuse bitmap with sampleSize != 1");
218        }
219        bitmap = (SkBitmap*) env->GetIntField(javaBitmap, gBitmap_nativeBitmapFieldID);
220        // config of supplied bitmap overrules config set in options
221        prefConfig = bitmap->getConfig();
222    }
223
224    SkAutoTDelete<SkImageDecoder> add(decoder);
225    SkAutoTDelete<SkBitmap> adb(bitmap, javaBitmap == NULL);
226
227    decoder->setPeeker(&peeker);
228    if (!isPurgeable) {
229        decoder->setAllocator(&javaAllocator);
230    }
231
232    AutoDecoderCancel adc(options, decoder);
233
234    // To fix the race condition in case "requestCancelDecode"
235    // happens earlier than AutoDecoderCancel object is added
236    // to the gAutoDecoderCancelMutex linked list.
237    if (options != NULL && env->GetBooleanField(options, gOptions_mCancelID)) {
238        return nullObjectReturn("gOptions_mCancelID");
239    }
240
241    SkImageDecoder::Mode decodeMode = mode;
242    if (isPurgeable) {
243        decodeMode = SkImageDecoder::kDecodeBounds_Mode;
244    }
245
246    SkBitmap* decoded;
247    if (willScale) {
248        decoded = new SkBitmap;
249    } else {
250        decoded = bitmap;
251    }
252    SkAutoTDelete<SkBitmap> adb2(willScale ? decoded : NULL);
253
254    if (!decoder->decode(stream, decoded, prefConfig, decodeMode, javaBitmap != NULL)) {
255        return nullObjectReturn("decoder->decode returned false");
256    }
257
258    int scaledWidth = decoded->width();
259    int scaledHeight = decoded->height();
260
261    if (willScale && mode != SkImageDecoder::kDecodeBounds_Mode) {
262        scaledWidth = int(scaledWidth * scale + 0.5f);
263        scaledHeight = int(scaledHeight * scale + 0.5f);
264    }
265
266    // update options (if any)
267    if (options != NULL) {
268        env->SetIntField(options, gOptions_widthFieldID, scaledWidth);
269        env->SetIntField(options, gOptions_heightFieldID, scaledHeight);
270        env->SetObjectField(options, gOptions_mimeFieldID,
271                getMimeTypeString(env, decoder->getFormat()));
272    }
273
274    // if we're in justBounds mode, return now (skip the java bitmap)
275    if (mode == SkImageDecoder::kDecodeBounds_Mode) {
276        return NULL;
277    }
278
279    jbyteArray ninePatchChunk = NULL;
280    if (peeker.fPatch != NULL) {
281        if (willScale) {
282            scaleNinePatchChunk(peeker.fPatch, scale);
283        }
284
285        size_t ninePatchArraySize = peeker.fPatch->serializedSize();
286        ninePatchChunk = env->NewByteArray(ninePatchArraySize);
287        if (ninePatchChunk == NULL) {
288            return nullObjectReturn("ninePatchChunk == null");
289        }
290
291        jbyte* array = (jbyte*) env->GetPrimitiveArrayCritical(ninePatchChunk, NULL);
292        if (array == NULL) {
293            return nullObjectReturn("primitive array == null");
294        }
295
296        peeker.fPatch->serialize(array);
297        env->ReleasePrimitiveArrayCritical(ninePatchChunk, array, 0);
298    }
299
300    jintArray layoutBounds = NULL;
301    if (peeker.fLayoutBounds != NULL) {
302        layoutBounds = env->NewIntArray(4);
303        if (layoutBounds == NULL) {
304            return nullObjectReturn("layoutBounds == null");
305        }
306
307        jint scaledBounds[4];
308        if (willScale) {
309            for (int i=0; i<4; i++) {
310                scaledBounds[i] = (jint)((((jint*)peeker.fLayoutBounds)[i]*scale) + .5f);
311            }
312        } else {
313            memcpy(scaledBounds, (jint*)peeker.fLayoutBounds, sizeof(scaledBounds));
314        }
315        env->SetIntArrayRegion(layoutBounds, 0, 4, scaledBounds);
316        if (javaBitmap != NULL) {
317            env->SetObjectField(javaBitmap, gBitmap_layoutBoundsFieldID, layoutBounds);
318        }
319    }
320
321    if (willScale) {
322        // This is weird so let me explain: we could use the scale parameter
323        // directly, but for historical reasons this is how the corresponding
324        // Dalvik code has always behaved. We simply recreate the behavior here.
325        // The result is slightly different from simply using scale because of
326        // the 0.5f rounding bias applied when computing the target image size
327        const float sx = scaledWidth / float(decoded->width());
328        const float sy = scaledHeight / float(decoded->height());
329
330        SkBitmap::Config config = decoded->config();
331        switch (config) {
332            case SkBitmap::kNo_Config:
333            case SkBitmap::kIndex8_Config:
334            case SkBitmap::kRLE_Index8_Config:
335                config = SkBitmap::kARGB_8888_Config;
336                break;
337            default:
338                break;
339        }
340
341        bitmap->setConfig(config, scaledWidth, scaledHeight);
342        bitmap->setIsOpaque(decoded->isOpaque());
343        if (!bitmap->allocPixels(&javaAllocator, NULL)) {
344            return nullObjectReturn("allocation failed for scaled bitmap");
345        }
346        bitmap->eraseColor(0);
347
348        SkPaint paint;
349        paint.setFilterBitmap(true);
350
351        SkCanvas canvas(*bitmap);
352        canvas.scale(sx, sy);
353        canvas.drawBitmap(*decoded, 0.0f, 0.0f, &paint);
354    }
355
356    if (padding) {
357        if (peeker.fPatch != NULL) {
358            GraphicsJNI::set_jrect(env, padding,
359                    peeker.fPatch->paddingLeft, peeker.fPatch->paddingTop,
360                    peeker.fPatch->paddingRight, peeker.fPatch->paddingBottom);
361        } else {
362            GraphicsJNI::set_jrect(env, padding, -1, -1, -1, -1);
363        }
364    }
365
366    SkPixelRef* pr;
367    if (isPurgeable) {
368        pr = installPixelRef(bitmap, stream, sampleSize, doDither);
369    } else {
370        // if we get here, we're in kDecodePixels_Mode and will therefore
371        // already have a pixelref installed.
372        pr = bitmap->pixelRef();
373    }
374    if (pr == NULL) {
375        return nullObjectReturn("Got null SkPixelRef");
376    }
377
378    if (!isMutable) {
379        // promise we will never change our pixels (great for sharing and pictures)
380        pr->setImmutable();
381    }
382
383    // detach bitmap from its autodeleter, since we want to own it now
384    adb.detach();
385
386    if (javaBitmap != NULL) {
387        // If a java bitmap was passed in for reuse, pass it back
388        return javaBitmap;
389    }
390    // now create the java bitmap
391    return GraphicsJNI::createBitmap(env, bitmap, javaAllocator.getStorageObj(),
392            isMutable, ninePatchChunk, layoutBounds, -1);
393}
394
395static jobject nativeDecodeStreamScaled(JNIEnv* env, jobject clazz, jobject is, jbyteArray storage,
396        jobject padding, jobject options, jboolean applyScale, jfloat scale) {
397
398    jobject bitmap = NULL;
399    SkStream* stream = CreateJavaInputStreamAdaptor(env, is, storage, 0);
400
401    if (stream) {
402        // for now we don't allow purgeable with java inputstreams
403        bitmap = doDecode(env, stream, padding, options, false, false, applyScale, scale);
404        stream->unref();
405    }
406    return bitmap;
407}
408
409static jobject nativeDecodeStream(JNIEnv* env, jobject clazz, jobject is, jbyteArray storage,
410        jobject padding, jobject options) {
411
412    return nativeDecodeStreamScaled(env, clazz, is, storage, padding, options, false, 1.0f);
413}
414
415static ssize_t getFDSize(int fd) {
416    off64_t curr = ::lseek64(fd, 0, SEEK_CUR);
417    if (curr < 0) {
418        return 0;
419    }
420    size_t size = ::lseek(fd, 0, SEEK_END);
421    ::lseek64(fd, curr, SEEK_SET);
422    return size;
423}
424
425static jobject nativeDecodeFileDescriptor(JNIEnv* env, jobject clazz, jobject fileDescriptor,
426        jobject padding, jobject bitmapFactoryOptions) {
427
428    NPE_CHECK_RETURN_ZERO(env, fileDescriptor);
429
430    jint descriptor = jniGetFDFromFileDescriptor(env, fileDescriptor);
431
432    bool isPurgeable = optionsPurgeable(env, bitmapFactoryOptions);
433    bool isShareable = optionsShareable(env, bitmapFactoryOptions);
434    bool weOwnTheFD = false;
435    if (isPurgeable && isShareable) {
436        int newFD = ::dup(descriptor);
437        if (-1 != newFD) {
438            weOwnTheFD = true;
439            descriptor = newFD;
440        }
441    }
442
443    SkFDStream* stream = new SkFDStream(descriptor, weOwnTheFD);
444    SkAutoUnref aur(stream);
445    if (!stream->isValid()) {
446        return NULL;
447    }
448
449    /* Restore our offset when we leave, so we can be called more than once
450       with the same descriptor. This is only required if we didn't dup the
451       file descriptor, but it is OK to do it all the time.
452    */
453    AutoFDSeek as(descriptor);
454
455    /* Allow purgeable iff we own the FD, i.e., in the puregeable and
456       shareable case.
457    */
458    return doDecode(env, stream, padding, bitmapFactoryOptions, weOwnTheFD);
459}
460
461/*  make a deep copy of the asset, and return it as a stream, or NULL if there
462    was an error.
463 */
464static SkStream* copyAssetToStream(Asset* asset) {
465    // if we could "ref/reopen" the asset, we may not need to copy it here
466    off64_t size = asset->seek(0, SEEK_SET);
467    if ((off64_t)-1 == size) {
468        SkDebugf("---- copyAsset: asset rewind failed\n");
469        return NULL;
470    }
471
472    size = asset->getLength();
473    if (size <= 0) {
474        SkDebugf("---- copyAsset: asset->getLength() returned %d\n", size);
475        return NULL;
476    }
477
478    SkStream* stream = new SkMemoryStream(size);
479    void* data = const_cast<void*>(stream->getMemoryBase());
480    off64_t len = asset->read(data, size);
481    if (len != size) {
482        SkDebugf("---- copyAsset: asset->read(%d) returned %d\n", size, len);
483        delete stream;
484        stream = NULL;
485    }
486    return stream;
487}
488
489static jobject nativeDecodeAssetScaled(JNIEnv* env, jobject clazz, jint native_asset,
490        jobject padding, jobject options, jboolean applyScale, jfloat scale) {
491
492    SkStream* stream;
493    Asset* asset = reinterpret_cast<Asset*>(native_asset);
494    bool forcePurgeable = optionsPurgeable(env, options);
495    if (forcePurgeable) {
496        // if we could "ref/reopen" the asset, we may not need to copy it here
497        // and we could assume optionsShareable, since assets are always RO
498        stream = copyAssetToStream(asset);
499        if (stream == NULL) {
500            return NULL;
501        }
502    } else {
503        // since we know we'll be done with the asset when we return, we can
504        // just use a simple wrapper
505        stream = new AssetStreamAdaptor(asset);
506    }
507    SkAutoUnref aur(stream);
508    return doDecode(env, stream, padding, options, true, forcePurgeable, applyScale, scale);
509}
510
511static jobject nativeDecodeAsset(JNIEnv* env, jobject clazz, jint native_asset,
512        jobject padding, jobject options) {
513
514    return nativeDecodeAssetScaled(env, clazz, native_asset, padding, options, false, 1.0f);
515}
516
517static jobject nativeDecodeByteArray(JNIEnv* env, jobject, jbyteArray byteArray,
518        int offset, int length, jobject options) {
519
520    /*  If optionsShareable() we could decide to just wrap the java array and
521        share it, but that means adding a globalref to the java array object
522        and managing its lifetime. For now we just always copy the array's data
523        if optionsPurgeable(), unless we're just decoding bounds.
524     */
525    bool purgeable = optionsPurgeable(env, options) && !optionsJustBounds(env, options);
526    AutoJavaByteArray ar(env, byteArray);
527    SkStream* stream = new SkMemoryStream(ar.ptr() + offset, length, purgeable);
528    SkAutoUnref aur(stream);
529    return doDecode(env, stream, NULL, options, purgeable);
530}
531
532static void nativeRequestCancel(JNIEnv*, jobject joptions) {
533    (void)AutoDecoderCancel::RequestCancel(joptions);
534}
535
536static jboolean nativeIsSeekable(JNIEnv* env, jobject, jobject fileDescriptor) {
537    jint descriptor = jniGetFDFromFileDescriptor(env, fileDescriptor);
538    return ::lseek64(descriptor, 0, SEEK_CUR) != -1 ? JNI_TRUE : JNI_FALSE;
539}
540
541///////////////////////////////////////////////////////////////////////////////
542
543static JNINativeMethod gMethods[] = {
544    {   "nativeDecodeStream",
545        "(Ljava/io/InputStream;[BLandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;",
546        (void*)nativeDecodeStream
547    },
548    {   "nativeDecodeStream",
549        "(Ljava/io/InputStream;[BLandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;ZF)Landroid/graphics/Bitmap;",
550        (void*)nativeDecodeStreamScaled
551    },
552
553    {   "nativeDecodeFileDescriptor",
554        "(Ljava/io/FileDescriptor;Landroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;",
555        (void*)nativeDecodeFileDescriptor
556    },
557
558    {   "nativeDecodeAsset",
559        "(ILandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;",
560        (void*)nativeDecodeAsset
561    },
562
563    {   "nativeDecodeAsset",
564        "(ILandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;ZF)Landroid/graphics/Bitmap;",
565        (void*)nativeDecodeAssetScaled
566    },
567
568    {   "nativeDecodeByteArray",
569        "([BIILandroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;",
570        (void*)nativeDecodeByteArray
571    },
572
573    {   "nativeScaleNinePatch",
574        "([BFLandroid/graphics/Rect;)[B",
575        (void*)nativeScaleNinePatch
576    },
577
578    {   "nativeIsSeekable",
579        "(Ljava/io/FileDescriptor;)Z",
580        (void*)nativeIsSeekable
581    },
582};
583
584static JNINativeMethod gOptionsMethods[] = {
585    {   "requestCancel", "()V", (void*)nativeRequestCancel }
586};
587
588static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz,
589                                const char fieldname[], const char type[]) {
590    jfieldID id = env->GetFieldID(clazz, fieldname, type);
591    SkASSERT(id);
592    return id;
593}
594
595int register_android_graphics_BitmapFactory(JNIEnv* env) {
596    jclass options_class = env->FindClass("android/graphics/BitmapFactory$Options");
597    SkASSERT(options_class);
598    gOptions_bitmapFieldID = getFieldIDCheck(env, options_class, "inBitmap",
599        "Landroid/graphics/Bitmap;");
600    gOptions_justBoundsFieldID = getFieldIDCheck(env, options_class, "inJustDecodeBounds", "Z");
601    gOptions_sampleSizeFieldID = getFieldIDCheck(env, options_class, "inSampleSize", "I");
602    gOptions_configFieldID = getFieldIDCheck(env, options_class, "inPreferredConfig",
603            "Landroid/graphics/Bitmap$Config;");
604    gOptions_mutableFieldID = getFieldIDCheck(env, options_class, "inMutable", "Z");
605    gOptions_ditherFieldID = getFieldIDCheck(env, options_class, "inDither", "Z");
606    gOptions_purgeableFieldID = getFieldIDCheck(env, options_class, "inPurgeable", "Z");
607    gOptions_shareableFieldID = getFieldIDCheck(env, options_class, "inInputShareable", "Z");
608    gOptions_preferQualityOverSpeedFieldID = getFieldIDCheck(env, options_class,
609            "inPreferQualityOverSpeed", "Z");
610    gOptions_widthFieldID = getFieldIDCheck(env, options_class, "outWidth", "I");
611    gOptions_heightFieldID = getFieldIDCheck(env, options_class, "outHeight", "I");
612    gOptions_mimeFieldID = getFieldIDCheck(env, options_class, "outMimeType", "Ljava/lang/String;");
613    gOptions_mCancelID = getFieldIDCheck(env, options_class, "mCancel", "Z");
614
615    jclass bitmap_class = env->FindClass("android/graphics/Bitmap");
616    SkASSERT(bitmap_class);
617    gBitmap_nativeBitmapFieldID = getFieldIDCheck(env, bitmap_class, "mNativeBitmap", "I");
618    gBitmap_layoutBoundsFieldID = getFieldIDCheck(env, bitmap_class, "mLayoutBounds", "[I");
619    int ret = AndroidRuntime::registerNativeMethods(env,
620                                    "android/graphics/BitmapFactory$Options",
621                                    gOptionsMethods,
622                                    SK_ARRAY_COUNT(gOptionsMethods));
623    if (ret) {
624        return ret;
625    }
626    return android::AndroidRuntime::registerNativeMethods(env, "android/graphics/BitmapFactory",
627                                         gMethods, SK_ARRAY_COUNT(gMethods));
628}
629