Bitmap.cpp revision 1a81aea8144b92ebaf807af9de69a0ab3415a5aa 
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_util_Binder.h"
11#include "android_nio_utils.h"
12#include "CreateJavaOutputStreamAdaptor.h"
13
14#include <jni.h>
15
16#include <Caches.h>
17
18#if 0
19    #define TRACE_BITMAP(code)  code
20#else
21    #define TRACE_BITMAP(code)
22#endif
23
24///////////////////////////////////////////////////////////////////////////////
25// Conversions to/from SkColor, for get/setPixels, and the create method, which
26// is basically like setPixels
27
28typedef void (*FromColorProc)(void* dst, const SkColor src[], int width,
29                              int x, int y);
30
31static void FromColor_D32(void* dst, const SkColor src[], int width,
32                          int, int) {
33    SkPMColor* d = (SkPMColor*)dst;
34
35    for (int i = 0; i < width; i++) {
36        *d++ = SkPreMultiplyColor(*src++);
37    }
38}
39
40static void FromColor_D565(void* dst, const SkColor src[], int width,
41                           int x, int y) {
42    uint16_t* d = (uint16_t*)dst;
43
44    DITHER_565_SCAN(y);
45    for (int stop = x + width; x < stop; x++) {
46        SkColor c = *src++;
47        *d++ = SkDitherRGBTo565(SkColorGetR(c), SkColorGetG(c), SkColorGetB(c),
48                                DITHER_VALUE(x));
49    }
50}
51
52static void FromColor_D4444(void* dst, const SkColor src[], int width,
53                            int x, int y) {
54    SkPMColor16* d = (SkPMColor16*)dst;
55
56    DITHER_4444_SCAN(y);
57    for (int stop = x + width; x < stop; x++) {
58        SkPMColor c = SkPreMultiplyColor(*src++);
59        *d++ = SkDitherARGB32To4444(c, DITHER_VALUE(x));
60//        *d++ = SkPixel32ToPixel4444(c);
61    }
62}
63
64// can return NULL
65static FromColorProc ChooseFromColorProc(SkBitmap::Config config) {
66    switch (config) {
67        case SkBitmap::kARGB_8888_Config:
68            return FromColor_D32;
69        case SkBitmap::kARGB_4444_Config:
70            return FromColor_D4444;
71        case SkBitmap::kRGB_565_Config:
72            return FromColor_D565;
73        default:
74            break;
75    }
76    return NULL;
77}
78
79bool GraphicsJNI::SetPixels(JNIEnv* env, jintArray srcColors,
80                            int srcOffset, int srcStride,
81                            int x, int y, int width, int height,
82                            const SkBitmap& dstBitmap) {
83    SkAutoLockPixels alp(dstBitmap);
84    void* dst = dstBitmap.getPixels();
85    FromColorProc proc = ChooseFromColorProc(dstBitmap.config());
86
87    if (NULL == dst || NULL == proc) {
88        return false;
89    }
90
91    const jint* array = env->GetIntArrayElements(srcColors, NULL);
92    const SkColor* src = (const SkColor*)array + srcOffset;
93
94    // reset to to actual choice from caller
95    dst = dstBitmap.getAddr(x, y);
96    // now copy/convert each scanline
97    for (int y = 0; y < height; y++) {
98        proc(dst, src, width, x, y);
99        src += srcStride;
100        dst = (char*)dst + dstBitmap.rowBytes();
101    }
102
103    dstBitmap.notifyPixelsChanged();
104
105    env->ReleaseIntArrayElements(srcColors, const_cast<jint*>(array),
106                                 JNI_ABORT);
107    return true;
108}
109
110//////////////////// ToColor procs
111
112typedef void (*ToColorProc)(SkColor dst[], const void* src, int width,
113                            SkColorTable*);
114
115static void ToColor_S32_Alpha(SkColor dst[], const void* src, int width,
116                              SkColorTable*) {
117    SkASSERT(width > 0);
118    const SkPMColor* s = (const SkPMColor*)src;
119    do {
120        *dst++ = SkUnPreMultiply::PMColorToColor(*s++);
121    } while (--width != 0);
122}
123
124static void ToColor_S32_Opaque(SkColor dst[], const void* src, int width,
125                               SkColorTable*) {
126    SkASSERT(width > 0);
127    const SkPMColor* s = (const SkPMColor*)src;
128    do {
129        SkPMColor c = *s++;
130        *dst++ = SkColorSetRGB(SkGetPackedR32(c), SkGetPackedG32(c),
131                               SkGetPackedB32(c));
132    } while (--width != 0);
133}
134
135static void ToColor_S4444_Alpha(SkColor dst[], const void* src, int width,
136                                SkColorTable*) {
137    SkASSERT(width > 0);
138    const SkPMColor16* s = (const SkPMColor16*)src;
139    do {
140        *dst++ = SkUnPreMultiply::PMColorToColor(SkPixel4444ToPixel32(*s++));
141    } while (--width != 0);
142}
143
144static void ToColor_S4444_Opaque(SkColor dst[], const void* src, int width,
145                                 SkColorTable*) {
146    SkASSERT(width > 0);
147    const SkPMColor* s = (const SkPMColor*)src;
148    do {
149        SkPMColor c = SkPixel4444ToPixel32(*s++);
150        *dst++ = SkColorSetRGB(SkGetPackedR32(c), SkGetPackedG32(c),
151                               SkGetPackedB32(c));
152    } while (--width != 0);
153}
154
155static void ToColor_S565(SkColor dst[], const void* src, int width,
156                         SkColorTable*) {
157    SkASSERT(width > 0);
158    const uint16_t* s = (const uint16_t*)src;
159    do {
160        uint16_t c = *s++;
161        *dst++ =  SkColorSetRGB(SkPacked16ToR32(c), SkPacked16ToG32(c),
162                                SkPacked16ToB32(c));
163    } while (--width != 0);
164}
165
166static void ToColor_SI8_Alpha(SkColor dst[], const void* src, int width,
167                              SkColorTable* ctable) {
168    SkASSERT(width > 0);
169    const uint8_t* s = (const uint8_t*)src;
170    const SkPMColor* colors = ctable->lockColors();
171    do {
172        *dst++ = SkUnPreMultiply::PMColorToColor(colors[*s++]);
173    } while (--width != 0);
174    ctable->unlockColors(false);
175}
176
177static void ToColor_SI8_Opaque(SkColor dst[], const void* src, int width,
178                               SkColorTable* ctable) {
179    SkASSERT(width > 0);
180    const uint8_t* s = (const uint8_t*)src;
181    const SkPMColor* colors = ctable->lockColors();
182    do {
183        SkPMColor c = colors[*s++];
184        *dst++ = SkColorSetRGB(SkGetPackedR32(c), SkGetPackedG32(c),
185                               SkGetPackedB32(c));
186    } while (--width != 0);
187    ctable->unlockColors(false);
188}
189
190// can return NULL
191static ToColorProc ChooseToColorProc(const SkBitmap& src) {
192    switch (src.config()) {
193        case SkBitmap::kARGB_8888_Config:
194            return src.isOpaque() ? ToColor_S32_Opaque : ToColor_S32_Alpha;
195        case SkBitmap::kARGB_4444_Config:
196            return src.isOpaque() ? ToColor_S4444_Opaque : ToColor_S4444_Alpha;
197        case SkBitmap::kRGB_565_Config:
198            return ToColor_S565;
199        case SkBitmap::kIndex8_Config:
200            if (src.getColorTable() == NULL) {
201                return NULL;
202            }
203            return src.isOpaque() ? ToColor_SI8_Opaque : ToColor_SI8_Alpha;
204        default:
205            break;
206    }
207    return NULL;
208}
209
210///////////////////////////////////////////////////////////////////////////////
211///////////////////////////////////////////////////////////////////////////////
212
213static jobject Bitmap_creator(JNIEnv* env, jobject, jintArray jColors,
214                              int offset, int stride, int width, int height,
215                              SkBitmap::Config config, jboolean isMutable) {
216    if (NULL != jColors) {
217        size_t n = env->GetArrayLength(jColors);
218        if (n < SkAbs32(stride) * (size_t)height) {
219            doThrowAIOOBE(env);
220            return NULL;
221        }
222    }
223
224    SkBitmap bitmap;
225
226    bitmap.setConfig(config, width, height);
227
228    jbyteArray buff = GraphicsJNI::allocateJavaPixelRef(env, &bitmap, NULL);
229    if (NULL == buff) {
230        return NULL;
231    }
232
233    if (jColors != NULL) {
234        GraphicsJNI::SetPixels(env, jColors, offset, stride,
235                               0, 0, width, height, bitmap);
236    }
237
238    return GraphicsJNI::createBitmap(env, new SkBitmap(bitmap), buff, isMutable, NULL);
239}
240
241static jobject Bitmap_copy(JNIEnv* env, jobject, const SkBitmap* src,
242                           SkBitmap::Config dstConfig, jboolean isMutable) {
243    SkBitmap            result;
244    JavaPixelAllocator  allocator(env);
245
246    if (!src->copyTo(&result, dstConfig, &allocator)) {
247        return NULL;
248    }
249
250    return GraphicsJNI::createBitmap(env, new SkBitmap(result), allocator.getStorageObj(), isMutable, NULL);
251}
252
253static void Bitmap_destructor(JNIEnv* env, jobject, SkBitmap* bitmap) {
254#ifdef USE_OPENGL_RENDERER
255    if (android::uirenderer::Caches::hasInstance()) {
256        android::uirenderer::Caches::getInstance().resourceCache.destructor(bitmap);
257        return;
258    }
259#endif // USE_OPENGL_RENDERER
260    delete bitmap;
261}
262
263static void Bitmap_recycle(JNIEnv* env, jobject, SkBitmap* bitmap) {
264#ifdef USE_OPENGL_RENDERER
265    if (android::uirenderer::Caches::hasInstance()) {
266        android::uirenderer::Caches::getInstance().resourceCache.recycle(bitmap);
267        return;
268    }
269#endif // USE_OPENGL_RENDERER
270    bitmap->setPixels(NULL, NULL);
271}
272
273// These must match the int values in Bitmap.java
274enum JavaEncodeFormat {
275    kJPEG_JavaEncodeFormat = 0,
276    kPNG_JavaEncodeFormat = 1
277};
278
279static bool Bitmap_compress(JNIEnv* env, jobject clazz, SkBitmap* bitmap,
280                            int format, int quality,
281                            jobject jstream, jbyteArray jstorage) {
282    SkImageEncoder::Type fm;
283
284    switch (format) {
285    case kJPEG_JavaEncodeFormat:
286        fm = SkImageEncoder::kJPEG_Type;
287        break;
288    case kPNG_JavaEncodeFormat:
289        fm = SkImageEncoder::kPNG_Type;
290        break;
291    default:
292        return false;
293    }
294
295    bool success = false;
296    SkWStream* strm = CreateJavaOutputStreamAdaptor(env, jstream, jstorage);
297    if (NULL != strm) {
298        SkImageEncoder* encoder = SkImageEncoder::Create(fm);
299        if (NULL != encoder) {
300            success = encoder->encodeStream(strm, *bitmap, quality);
301            delete encoder;
302        }
303        delete strm;
304    }
305    return success;
306}
307
308static void Bitmap_erase(JNIEnv* env, jobject, SkBitmap* bitmap, jint color) {
309    bitmap->eraseColor(color);
310}
311
312static int Bitmap_width(JNIEnv* env, jobject, SkBitmap* bitmap) {
313    return bitmap->width();
314}
315
316static int Bitmap_height(JNIEnv* env, jobject, SkBitmap* bitmap) {
317    return bitmap->height();
318}
319
320static int Bitmap_rowBytes(JNIEnv* env, jobject, SkBitmap* bitmap) {
321    return bitmap->rowBytes();
322}
323
324static int Bitmap_config(JNIEnv* env, jobject, SkBitmap* bitmap) {
325    return bitmap->config();
326}
327
328static int Bitmap_getGenerationId(JNIEnv* env, jobject, SkBitmap* bitmap) {
329    return bitmap->getGenerationID();
330}
331
332static jboolean Bitmap_hasAlpha(JNIEnv* env, jobject, SkBitmap* bitmap) {
333    return !bitmap->isOpaque();
334}
335
336static void Bitmap_setHasAlpha(JNIEnv* env, jobject, SkBitmap* bitmap,
337                               jboolean hasAlpha) {
338    bitmap->setIsOpaque(!hasAlpha);
339}
340
341///////////////////////////////////////////////////////////////////////////////
342
343static jobject Bitmap_createFromParcel(JNIEnv* env, jobject, jobject parcel) {
344    if (parcel == NULL) {
345        SkDebugf("-------- unparcel parcel is NULL\n");
346        return NULL;
347    }
348
349    android::Parcel* p = android::parcelForJavaObject(env, parcel);
350
351    const bool              isMutable = p->readInt32() != 0;
352    const SkBitmap::Config  config = (SkBitmap::Config)p->readInt32();
353    const int               width = p->readInt32();
354    const int               height = p->readInt32();
355    const int               rowBytes = p->readInt32();
356    const int               density = p->readInt32();
357
358    if (SkBitmap::kARGB_8888_Config != config &&
359            SkBitmap::kRGB_565_Config != config &&
360            SkBitmap::kARGB_4444_Config != config &&
361            SkBitmap::kIndex8_Config != config &&
362            SkBitmap::kA8_Config != config) {
363        SkDebugf("Bitmap_createFromParcel unknown config: %d\n", config);
364        return NULL;
365    }
366
367    SkBitmap* bitmap = new SkBitmap;
368
369    bitmap->setConfig(config, width, height, rowBytes);
370
371    SkColorTable* ctable = NULL;
372    if (config == SkBitmap::kIndex8_Config) {
373        int count = p->readInt32();
374        if (count > 0) {
375            size_t size = count * sizeof(SkPMColor);
376            const SkPMColor* src = (const SkPMColor*)p->readInplace(size);
377            ctable = new SkColorTable(src, count);
378        }
379    }
380
381    jbyteArray buffer = GraphicsJNI::allocateJavaPixelRef(env, bitmap, ctable);
382    if (NULL == buffer) {
383        SkSafeUnref(ctable);
384        delete bitmap;
385        return NULL;
386    }
387
388    SkSafeUnref(ctable);
389
390    size_t size = bitmap->getSize();
391    bitmap->lockPixels();
392    memcpy(bitmap->getPixels(), p->readInplace(size), size);
393    bitmap->unlockPixels();
394
395    return GraphicsJNI::createBitmap(env, bitmap, buffer, isMutable, NULL, density);
396}
397
398static jboolean Bitmap_writeToParcel(JNIEnv* env, jobject,
399                                     const SkBitmap* bitmap,
400                                     jboolean isMutable, jint density,
401                                     jobject parcel) {
402    if (parcel == NULL) {
403        SkDebugf("------- writeToParcel null parcel\n");
404        return false;
405    }
406
407    android::Parcel* p = android::parcelForJavaObject(env, parcel);
408
409    p->writeInt32(isMutable);
410    p->writeInt32(bitmap->config());
411    p->writeInt32(bitmap->width());
412    p->writeInt32(bitmap->height());
413    p->writeInt32(bitmap->rowBytes());
414    p->writeInt32(density);
415
416    if (bitmap->getConfig() == SkBitmap::kIndex8_Config) {
417        SkColorTable* ctable = bitmap->getColorTable();
418        if (ctable != NULL) {
419            int count = ctable->count();
420            p->writeInt32(count);
421            memcpy(p->writeInplace(count * sizeof(SkPMColor)),
422                   ctable->lockColors(), count * sizeof(SkPMColor));
423            ctable->unlockColors(false);
424        } else {
425            p->writeInt32(0);   // indicate no ctable
426        }
427    }
428
429    size_t size = bitmap->getSize();
430    bitmap->lockPixels();
431    void* pDst = p->writeInplace(size);
432
433    const void* pSrc =  bitmap->getPixels();
434
435    if (pSrc == NULL) {
436        memset(pDst, 0, size);
437    } else {
438        memcpy(pDst, pSrc, size);
439    }
440    bitmap->unlockPixels();
441    return true;
442}
443
444static jobject Bitmap_extractAlpha(JNIEnv* env, jobject clazz,
445                                   const SkBitmap* src, const SkPaint* paint,
446                                   jintArray offsetXY) {
447    SkIPoint  offset;
448    SkBitmap* dst = new SkBitmap;
449    JavaPixelAllocator allocator(env);
450
451    src->extractAlpha(dst, paint, &allocator, &offset);
452    // If Skia can't allocate pixels for destination bitmap, it resets
453    // it, that is set its pixels buffer to NULL, and zero width and height.
454    if (dst->getPixels() == NULL && src->getPixels() != NULL) {
455        delete dst;
456        doThrowOOME(env, "failed to allocate pixels for alpha");
457        return NULL;
458    }
459    if (offsetXY != 0 && env->GetArrayLength(offsetXY) >= 2) {
460        int* array = env->GetIntArrayElements(offsetXY, NULL);
461        array[0] = offset.fX;
462        array[1] = offset.fY;
463        env->ReleaseIntArrayElements(offsetXY, array, 0);
464    }
465
466    return GraphicsJNI::createBitmap(env, dst, allocator.getStorageObj(), true, NULL);
467}
468
469///////////////////////////////////////////////////////////////////////////////
470
471static int Bitmap_getPixel(JNIEnv* env, jobject, const SkBitmap* bitmap,
472                           int x, int y) {
473    SkAutoLockPixels alp(*bitmap);
474
475    ToColorProc proc = ChooseToColorProc(*bitmap);
476    if (NULL == proc) {
477        return 0;
478    }
479    const void* src = bitmap->getAddr(x, y);
480    if (NULL == src) {
481        return 0;
482    }
483
484    SkColor dst[1];
485    proc(dst, src, 1, bitmap->getColorTable());
486    return dst[0];
487}
488
489static void Bitmap_getPixels(JNIEnv* env, jobject, const SkBitmap* bitmap,
490                             jintArray pixelArray, int offset, int stride,
491                             int x, int y, int width, int height) {
492    SkAutoLockPixels alp(*bitmap);
493
494    ToColorProc proc = ChooseToColorProc(*bitmap);
495    if (NULL == proc) {
496        return;
497    }
498    const void* src = bitmap->getAddr(x, y);
499    if (NULL == src) {
500        return;
501    }
502
503    SkColorTable* ctable = bitmap->getColorTable();
504    jint* dst = env->GetIntArrayElements(pixelArray, NULL);
505    SkColor* d = (SkColor*)dst + offset;
506    while (--height >= 0) {
507        proc(d, src, width, ctable);
508        d += stride;
509        src = (void*)((const char*)src + bitmap->rowBytes());
510    }
511    env->ReleaseIntArrayElements(pixelArray, dst, 0);
512}
513
514///////////////////////////////////////////////////////////////////////////////
515
516static void Bitmap_setPixel(JNIEnv* env, jobject, const SkBitmap* bitmap,
517                            int x, int y, SkColor color) {
518    SkAutoLockPixels alp(*bitmap);
519    if (NULL == bitmap->getPixels()) {
520        return;
521    }
522
523    FromColorProc proc = ChooseFromColorProc(bitmap->config());
524    if (NULL == proc) {
525        return;
526    }
527
528    proc(bitmap->getAddr(x, y), &color, 1, x, y);
529    bitmap->notifyPixelsChanged();
530}
531
532static void Bitmap_setPixels(JNIEnv* env, jobject, const SkBitmap* bitmap,
533                             jintArray pixelArray, int offset, int stride,
534                             int x, int y, int width, int height) {
535    GraphicsJNI::SetPixels(env, pixelArray, offset, stride,
536                           x, y, width, height, *bitmap);
537}
538
539static void Bitmap_copyPixelsToBuffer(JNIEnv* env, jobject,
540                                      const SkBitmap* bitmap, jobject jbuffer) {
541    SkAutoLockPixels alp(*bitmap);
542    const void* src = bitmap->getPixels();
543
544    if (NULL != src) {
545        android::AutoBufferPointer abp(env, jbuffer, JNI_TRUE);
546
547        // the java side has already checked that buffer is large enough
548        memcpy(abp.pointer(), src, bitmap->getSize());
549    }
550}
551
552static void Bitmap_copyPixelsFromBuffer(JNIEnv* env, jobject,
553                                    const SkBitmap* bitmap, jobject jbuffer) {
554    SkAutoLockPixels alp(*bitmap);
555    void* dst = bitmap->getPixels();
556
557    if (NULL != dst) {
558        android::AutoBufferPointer abp(env, jbuffer, JNI_FALSE);
559        // the java side has already checked that buffer is large enough
560        memcpy(dst, abp.pointer(), bitmap->getSize());
561    }
562}
563
564static bool Bitmap_sameAs(JNIEnv* env, jobject, const SkBitmap* bm0,
565                             const SkBitmap* bm1) {
566    if (bm0->width() != bm1->width() ||
567        bm0->height() != bm1->height() ||
568        bm0->config() != bm1->config()) {
569        return false;
570    }
571
572    SkAutoLockPixels alp0(*bm0);
573    SkAutoLockPixels alp1(*bm1);
574
575    // if we can't load the pixels, return false
576    if (NULL == bm0->getPixels() || NULL == bm1->getPixels()) {
577        return false;
578    }
579
580    if (bm0->config() == SkBitmap::kIndex8_Config) {
581        SkColorTable* ct0 = bm0->getColorTable();
582        SkColorTable* ct1 = bm1->getColorTable();
583        if (NULL == ct0 || NULL == ct1) {
584            return false;
585        }
586        if (ct0->count() != ct1->count()) {
587            return false;
588        }
589
590        SkAutoLockColors alc0(ct0);
591        SkAutoLockColors alc1(ct1);
592        const size_t size = ct0->count() * sizeof(SkPMColor);
593        if (memcmp(alc0.colors(), alc1.colors(), size) != 0) {
594            return false;
595        }
596    }
597
598    // now compare each scanline. We can't do the entire buffer at once,
599    // since we don't care about the pixel values that might extend beyond
600    // the width (since the scanline might be larger than the logical width)
601    const int h = bm0->height();
602    const size_t size = bm0->width() * bm0->bytesPerPixel();
603    for (int y = 0; y < h; y++) {
604        if (memcmp(bm0->getAddr(0, y), bm1->getAddr(0, y), size) != 0) {
605            return false;
606        }
607    }
608    return true;
609}
610
611static void Bitmap_prepareToDraw(JNIEnv* env, jobject, SkBitmap* bitmap) {
612    bitmap->lockPixels();
613    bitmap->unlockPixels();
614}
615
616///////////////////////////////////////////////////////////////////////////////
617
618#include <android_runtime/AndroidRuntime.h>
619
620static JNINativeMethod gBitmapMethods[] = {
621    {   "nativeCreate",             "([IIIIIIZ)Landroid/graphics/Bitmap;",
622        (void*)Bitmap_creator },
623    {   "nativeCopy",               "(IIZ)Landroid/graphics/Bitmap;",
624        (void*)Bitmap_copy },
625    {   "nativeDestructor",         "(I)V", (void*)Bitmap_destructor },
626    {   "nativeRecycle",            "(I)V", (void*)Bitmap_recycle },
627    {   "nativeCompress",           "(IIILjava/io/OutputStream;[B)Z",
628        (void*)Bitmap_compress },
629    {   "nativeErase",              "(II)V", (void*)Bitmap_erase },
630    {   "nativeWidth",              "(I)I", (void*)Bitmap_width },
631    {   "nativeHeight",             "(I)I", (void*)Bitmap_height },
632    {   "nativeRowBytes",           "(I)I", (void*)Bitmap_rowBytes },
633    {   "nativeConfig",             "(I)I", (void*)Bitmap_config },
634    {   "nativeHasAlpha",           "(I)Z", (void*)Bitmap_hasAlpha },
635    {   "nativeSetHasAlpha",        "(IZ)V", (void*)Bitmap_setHasAlpha },
636    {   "nativeCreateFromParcel",
637        "(Landroid/os/Parcel;)Landroid/graphics/Bitmap;",
638        (void*)Bitmap_createFromParcel },
639    {   "nativeWriteToParcel",      "(IZILandroid/os/Parcel;)Z",
640        (void*)Bitmap_writeToParcel },
641    {   "nativeExtractAlpha",       "(II[I)Landroid/graphics/Bitmap;",
642        (void*)Bitmap_extractAlpha },
643    {   "nativeGenerationId",       "(I)I", (void*)Bitmap_getGenerationId },
644    {   "nativeGetPixel",           "(III)I", (void*)Bitmap_getPixel },
645    {   "nativeGetPixels",          "(I[IIIIIII)V", (void*)Bitmap_getPixels },
646    {   "nativeSetPixel",           "(IIII)V", (void*)Bitmap_setPixel },
647    {   "nativeSetPixels",          "(I[IIIIIII)V", (void*)Bitmap_setPixels },
648    {   "nativeCopyPixelsToBuffer", "(ILjava/nio/Buffer;)V",
649                                            (void*)Bitmap_copyPixelsToBuffer },
650    {   "nativeCopyPixelsFromBuffer", "(ILjava/nio/Buffer;)V",
651                                            (void*)Bitmap_copyPixelsFromBuffer },
652    {   "nativeSameAs",             "(II)Z", (void*)Bitmap_sameAs },
653    {   "nativePrepareToDraw",      "(I)V", (void*)Bitmap_prepareToDraw },
654};
655
656#define kClassPathName  "android/graphics/Bitmap"
657
658int register_android_graphics_Bitmap(JNIEnv* env);
659int register_android_graphics_Bitmap(JNIEnv* env)
660{
661    return android::AndroidRuntime::registerNativeMethods(env, kClassPathName,
662                                gBitmapMethods, SK_ARRAY_COUNT(gBitmapMethods));
663}
664