1 #define LOG_TAG "GraphicsJNI"
2
3 #include "jni.h"
4 #include "JNIHelp.h"
5 #include "GraphicsJNI.h"
6
7 #include "SkCanvas.h"
8 #include "SkDevice.h"
9 #include "SkPicture.h"
10 #include "SkRegion.h"
11 #include <android_runtime/AndroidRuntime.h>
12
doThrowNPE(JNIEnv * env)13 void doThrowNPE(JNIEnv* env) {
14 jniThrowNullPointerException(env, NULL);
15 }
16
doThrowAIOOBE(JNIEnv * env)17 void doThrowAIOOBE(JNIEnv* env) {
18 jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL);
19 }
20
doThrowRE(JNIEnv * env,const char * msg)21 void doThrowRE(JNIEnv* env, const char* msg) {
22 jniThrowRuntimeException(env, msg);
23 }
24
doThrowIAE(JNIEnv * env,const char * msg)25 void doThrowIAE(JNIEnv* env, const char* msg) {
26 jniThrowException(env, "java/lang/IllegalArgumentException", msg);
27 }
28
doThrowISE(JNIEnv * env,const char * msg)29 void doThrowISE(JNIEnv* env, const char* msg) {
30 jniThrowException(env, "java/lang/IllegalStateException", msg);
31 }
32
doThrowOOME(JNIEnv * env,const char * msg)33 void doThrowOOME(JNIEnv* env, const char* msg) {
34 jniThrowException(env, "java/lang/OutOfMemoryError", msg);
35 }
36
doThrowIOE(JNIEnv * env,const char * msg)37 void doThrowIOE(JNIEnv* env, const char* msg) {
38 jniThrowException(env, "java/io/IOException", msg);
39 }
40
hasException(JNIEnv * env)41 bool GraphicsJNI::hasException(JNIEnv *env) {
42 if (env->ExceptionCheck() != 0) {
43 ALOGE("*** Uncaught exception returned from Java call!\n");
44 env->ExceptionDescribe();
45 return true;
46 }
47 return false;
48 }
49
50 ///////////////////////////////////////////////////////////////////////////////
51
AutoJavaFloatArray(JNIEnv * env,jfloatArray array,int minLength,JNIAccess access)52 AutoJavaFloatArray::AutoJavaFloatArray(JNIEnv* env, jfloatArray array,
53 int minLength, JNIAccess access)
54 : fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
55 SkASSERT(env);
56 if (array) {
57 fLen = env->GetArrayLength(array);
58 if (fLen < minLength) {
59 sk_throw();
60 }
61 fPtr = env->GetFloatArrayElements(array, NULL);
62 }
63 fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0;
64 }
65
~AutoJavaFloatArray()66 AutoJavaFloatArray::~AutoJavaFloatArray() {
67 if (fPtr) {
68 fEnv->ReleaseFloatArrayElements(fArray, fPtr, fReleaseMode);
69 }
70 }
71
AutoJavaIntArray(JNIEnv * env,jintArray array,int minLength)72 AutoJavaIntArray::AutoJavaIntArray(JNIEnv* env, jintArray array,
73 int minLength)
74 : fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
75 SkASSERT(env);
76 if (array) {
77 fLen = env->GetArrayLength(array);
78 if (fLen < minLength) {
79 sk_throw();
80 }
81 fPtr = env->GetIntArrayElements(array, NULL);
82 }
83 }
84
~AutoJavaIntArray()85 AutoJavaIntArray::~AutoJavaIntArray() {
86 if (fPtr) {
87 fEnv->ReleaseIntArrayElements(fArray, fPtr, 0);
88 }
89 }
90
AutoJavaShortArray(JNIEnv * env,jshortArray array,int minLength,JNIAccess access)91 AutoJavaShortArray::AutoJavaShortArray(JNIEnv* env, jshortArray array,
92 int minLength, JNIAccess access)
93 : fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
94 SkASSERT(env);
95 if (array) {
96 fLen = env->GetArrayLength(array);
97 if (fLen < minLength) {
98 sk_throw();
99 }
100 fPtr = env->GetShortArrayElements(array, NULL);
101 }
102 fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0;
103 }
104
~AutoJavaShortArray()105 AutoJavaShortArray::~AutoJavaShortArray() {
106 if (fPtr) {
107 fEnv->ReleaseShortArrayElements(fArray, fPtr, fReleaseMode);
108 }
109 }
110
AutoJavaByteArray(JNIEnv * env,jbyteArray array,int minLength)111 AutoJavaByteArray::AutoJavaByteArray(JNIEnv* env, jbyteArray array,
112 int minLength)
113 : fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
114 SkASSERT(env);
115 if (array) {
116 fLen = env->GetArrayLength(array);
117 if (fLen < minLength) {
118 sk_throw();
119 }
120 fPtr = env->GetByteArrayElements(array, NULL);
121 }
122 }
123
~AutoJavaByteArray()124 AutoJavaByteArray::~AutoJavaByteArray() {
125 if (fPtr) {
126 fEnv->ReleaseByteArrayElements(fArray, fPtr, 0);
127 }
128 }
129
130 ///////////////////////////////////////////////////////////////////////////////
131
132 static jclass gRect_class;
133 static jfieldID gRect_leftFieldID;
134 static jfieldID gRect_topFieldID;
135 static jfieldID gRect_rightFieldID;
136 static jfieldID gRect_bottomFieldID;
137
138 static jclass gRectF_class;
139 static jfieldID gRectF_leftFieldID;
140 static jfieldID gRectF_topFieldID;
141 static jfieldID gRectF_rightFieldID;
142 static jfieldID gRectF_bottomFieldID;
143
144 static jclass gPoint_class;
145 static jfieldID gPoint_xFieldID;
146 static jfieldID gPoint_yFieldID;
147
148 static jclass gPointF_class;
149 static jfieldID gPointF_xFieldID;
150 static jfieldID gPointF_yFieldID;
151
152 static jclass gBitmap_class;
153 static jfieldID gBitmap_nativeInstanceID;
154 static jmethodID gBitmap_constructorMethodID;
155
156 static jclass gBitmapConfig_class;
157 static jfieldID gBitmapConfig_nativeInstanceID;
158
159 static jclass gBitmapRegionDecoder_class;
160 static jmethodID gBitmapRegionDecoder_constructorMethodID;
161
162 static jclass gCanvas_class;
163 static jfieldID gCanvas_nativeInstanceID;
164
165 static jclass gPaint_class;
166 static jfieldID gPaint_nativeInstanceID;
167
168 static jclass gPicture_class;
169 static jfieldID gPicture_nativeInstanceID;
170
171 static jclass gRegion_class;
172 static jfieldID gRegion_nativeInstanceID;
173 static jmethodID gRegion_constructorMethodID;
174
175 ///////////////////////////////////////////////////////////////////////////////
176
get_jrect(JNIEnv * env,jobject obj,int * L,int * T,int * R,int * B)177 void GraphicsJNI::get_jrect(JNIEnv* env, jobject obj, int* L, int* T, int* R, int* B)
178 {
179 SkASSERT(env->IsInstanceOf(obj, gRect_class));
180
181 *L = env->GetIntField(obj, gRect_leftFieldID);
182 *T = env->GetIntField(obj, gRect_topFieldID);
183 *R = env->GetIntField(obj, gRect_rightFieldID);
184 *B = env->GetIntField(obj, gRect_bottomFieldID);
185 }
186
set_jrect(JNIEnv * env,jobject obj,int L,int T,int R,int B)187 void GraphicsJNI::set_jrect(JNIEnv* env, jobject obj, int L, int T, int R, int B)
188 {
189 SkASSERT(env->IsInstanceOf(obj, gRect_class));
190
191 env->SetIntField(obj, gRect_leftFieldID, L);
192 env->SetIntField(obj, gRect_topFieldID, T);
193 env->SetIntField(obj, gRect_rightFieldID, R);
194 env->SetIntField(obj, gRect_bottomFieldID, B);
195 }
196
jrect_to_irect(JNIEnv * env,jobject obj,SkIRect * ir)197 SkIRect* GraphicsJNI::jrect_to_irect(JNIEnv* env, jobject obj, SkIRect* ir)
198 {
199 SkASSERT(env->IsInstanceOf(obj, gRect_class));
200
201 ir->set(env->GetIntField(obj, gRect_leftFieldID),
202 env->GetIntField(obj, gRect_topFieldID),
203 env->GetIntField(obj, gRect_rightFieldID),
204 env->GetIntField(obj, gRect_bottomFieldID));
205 return ir;
206 }
207
irect_to_jrect(const SkIRect & ir,JNIEnv * env,jobject obj)208 void GraphicsJNI::irect_to_jrect(const SkIRect& ir, JNIEnv* env, jobject obj)
209 {
210 SkASSERT(env->IsInstanceOf(obj, gRect_class));
211
212 env->SetIntField(obj, gRect_leftFieldID, ir.fLeft);
213 env->SetIntField(obj, gRect_topFieldID, ir.fTop);
214 env->SetIntField(obj, gRect_rightFieldID, ir.fRight);
215 env->SetIntField(obj, gRect_bottomFieldID, ir.fBottom);
216 }
217
jrectf_to_rect(JNIEnv * env,jobject obj,SkRect * r)218 SkRect* GraphicsJNI::jrectf_to_rect(JNIEnv* env, jobject obj, SkRect* r)
219 {
220 SkASSERT(env->IsInstanceOf(obj, gRectF_class));
221
222 r->set(SkFloatToScalar(env->GetFloatField(obj, gRectF_leftFieldID)),
223 SkFloatToScalar(env->GetFloatField(obj, gRectF_topFieldID)),
224 SkFloatToScalar(env->GetFloatField(obj, gRectF_rightFieldID)),
225 SkFloatToScalar(env->GetFloatField(obj, gRectF_bottomFieldID)));
226 return r;
227 }
228
jrect_to_rect(JNIEnv * env,jobject obj,SkRect * r)229 SkRect* GraphicsJNI::jrect_to_rect(JNIEnv* env, jobject obj, SkRect* r)
230 {
231 SkASSERT(env->IsInstanceOf(obj, gRect_class));
232
233 r->set(SkIntToScalar(env->GetIntField(obj, gRect_leftFieldID)),
234 SkIntToScalar(env->GetIntField(obj, gRect_topFieldID)),
235 SkIntToScalar(env->GetIntField(obj, gRect_rightFieldID)),
236 SkIntToScalar(env->GetIntField(obj, gRect_bottomFieldID)));
237 return r;
238 }
239
rect_to_jrectf(const SkRect & r,JNIEnv * env,jobject obj)240 void GraphicsJNI::rect_to_jrectf(const SkRect& r, JNIEnv* env, jobject obj)
241 {
242 SkASSERT(env->IsInstanceOf(obj, gRectF_class));
243
244 env->SetFloatField(obj, gRectF_leftFieldID, SkScalarToFloat(r.fLeft));
245 env->SetFloatField(obj, gRectF_topFieldID, SkScalarToFloat(r.fTop));
246 env->SetFloatField(obj, gRectF_rightFieldID, SkScalarToFloat(r.fRight));
247 env->SetFloatField(obj, gRectF_bottomFieldID, SkScalarToFloat(r.fBottom));
248 }
249
jpoint_to_ipoint(JNIEnv * env,jobject obj,SkIPoint * point)250 SkIPoint* GraphicsJNI::jpoint_to_ipoint(JNIEnv* env, jobject obj, SkIPoint* point)
251 {
252 SkASSERT(env->IsInstanceOf(obj, gPoint_class));
253
254 point->set(env->GetIntField(obj, gPoint_xFieldID),
255 env->GetIntField(obj, gPoint_yFieldID));
256 return point;
257 }
258
ipoint_to_jpoint(const SkIPoint & ir,JNIEnv * env,jobject obj)259 void GraphicsJNI::ipoint_to_jpoint(const SkIPoint& ir, JNIEnv* env, jobject obj)
260 {
261 SkASSERT(env->IsInstanceOf(obj, gPoint_class));
262
263 env->SetIntField(obj, gPoint_xFieldID, ir.fX);
264 env->SetIntField(obj, gPoint_yFieldID, ir.fY);
265 }
266
jpointf_to_point(JNIEnv * env,jobject obj,SkPoint * point)267 SkPoint* GraphicsJNI::jpointf_to_point(JNIEnv* env, jobject obj, SkPoint* point)
268 {
269 SkASSERT(env->IsInstanceOf(obj, gPointF_class));
270
271 point->set(SkFloatToScalar(env->GetIntField(obj, gPointF_xFieldID)),
272 SkFloatToScalar(env->GetIntField(obj, gPointF_yFieldID)));
273 return point;
274 }
275
point_to_jpointf(const SkPoint & r,JNIEnv * env,jobject obj)276 void GraphicsJNI::point_to_jpointf(const SkPoint& r, JNIEnv* env, jobject obj)
277 {
278 SkASSERT(env->IsInstanceOf(obj, gPointF_class));
279
280 env->SetFloatField(obj, gPointF_xFieldID, SkScalarToFloat(r.fX));
281 env->SetFloatField(obj, gPointF_yFieldID, SkScalarToFloat(r.fY));
282 }
283
getNativeBitmap(JNIEnv * env,jobject bitmap)284 SkBitmap* GraphicsJNI::getNativeBitmap(JNIEnv* env, jobject bitmap) {
285 SkASSERT(env);
286 SkASSERT(bitmap);
287 SkASSERT(env->IsInstanceOf(bitmap, gBitmap_class));
288 SkBitmap* b = (SkBitmap*)env->GetIntField(bitmap, gBitmap_nativeInstanceID);
289 SkASSERT(b);
290 return b;
291 }
292
getNativeBitmapConfig(JNIEnv * env,jobject jconfig)293 SkBitmap::Config GraphicsJNI::getNativeBitmapConfig(JNIEnv* env,
294 jobject jconfig) {
295 SkASSERT(env);
296 if (NULL == jconfig) {
297 return SkBitmap::kNo_Config;
298 }
299 SkASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class));
300 int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID);
301 if (c < 0 || c >= SkBitmap::kConfigCount) {
302 c = SkBitmap::kNo_Config;
303 }
304 return static_cast<SkBitmap::Config>(c);
305 }
306
getNativeCanvas(JNIEnv * env,jobject canvas)307 SkCanvas* GraphicsJNI::getNativeCanvas(JNIEnv* env, jobject canvas) {
308 SkASSERT(env);
309 SkASSERT(canvas);
310 SkASSERT(env->IsInstanceOf(canvas, gCanvas_class));
311 SkCanvas* c = (SkCanvas*)env->GetIntField(canvas, gCanvas_nativeInstanceID);
312 SkASSERT(c);
313 return c;
314 }
315
getNativePaint(JNIEnv * env,jobject paint)316 SkPaint* GraphicsJNI::getNativePaint(JNIEnv* env, jobject paint) {
317 SkASSERT(env);
318 SkASSERT(paint);
319 SkASSERT(env->IsInstanceOf(paint, gPaint_class));
320 SkPaint* p = (SkPaint*)env->GetIntField(paint, gPaint_nativeInstanceID);
321 SkASSERT(p);
322 return p;
323 }
324
getNativePicture(JNIEnv * env,jobject picture)325 SkPicture* GraphicsJNI::getNativePicture(JNIEnv* env, jobject picture)
326 {
327 SkASSERT(env);
328 SkASSERT(picture);
329 SkASSERT(env->IsInstanceOf(picture, gPicture_class));
330 SkPicture* p = (SkPicture*)env->GetIntField(picture, gPicture_nativeInstanceID);
331 SkASSERT(p);
332 return p;
333 }
334
getNativeRegion(JNIEnv * env,jobject region)335 SkRegion* GraphicsJNI::getNativeRegion(JNIEnv* env, jobject region)
336 {
337 SkASSERT(env);
338 SkASSERT(region);
339 SkASSERT(env->IsInstanceOf(region, gRegion_class));
340 SkRegion* r = (SkRegion*)env->GetIntField(region, gRegion_nativeInstanceID);
341 SkASSERT(r);
342 return r;
343 }
344
345 ///////////////////////////////////////////////////////////////////////////////////////////
346
createBitmap(JNIEnv * env,SkBitmap * bitmap,jbyteArray buffer,bool isMutable,jbyteArray ninepatch,jintArray layoutbounds,int density)347 jobject GraphicsJNI::createBitmap(JNIEnv* env, SkBitmap* bitmap, jbyteArray buffer,
348 bool isMutable, jbyteArray ninepatch, jintArray layoutbounds,
349 int density)
350 {
351 SkASSERT(bitmap);
352 SkASSERT(bitmap->pixelRef());
353 jobject obj = env->NewObject(gBitmap_class, gBitmap_constructorMethodID,
354 static_cast<jint>(reinterpret_cast<uintptr_t>(bitmap)),
355 buffer, isMutable, ninepatch, layoutbounds, density);
356 hasException(env); // For the side effect of logging.
357 return obj;
358 }
359
createBitmap(JNIEnv * env,SkBitmap * bitmap,bool isMutable,jbyteArray ninepatch,int density)360 jobject GraphicsJNI::createBitmap(JNIEnv* env, SkBitmap* bitmap, bool isMutable,
361 jbyteArray ninepatch, int density)
362 {
363 return createBitmap(env, bitmap, NULL, isMutable, ninepatch, NULL, density);
364 }
365
366
createBitmapRegionDecoder(JNIEnv * env,SkBitmapRegionDecoder * bitmap)367 jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap)
368 {
369 SkASSERT(bitmap != NULL);
370
371 jobject obj = env->NewObject(gBitmapRegionDecoder_class,
372 gBitmapRegionDecoder_constructorMethodID,
373 static_cast<jint>(reinterpret_cast<uintptr_t>(bitmap)));
374 hasException(env); // For the side effect of logging.
375 return obj;
376 }
377
createRegion(JNIEnv * env,SkRegion * region)378 jobject GraphicsJNI::createRegion(JNIEnv* env, SkRegion* region)
379 {
380 SkASSERT(region != NULL);
381 jobject obj = env->NewObject(gRegion_class, gRegion_constructorMethodID,
382 static_cast<jint>(reinterpret_cast<uintptr_t>(region)), 0);
383 hasException(env); // For the side effect of logging.
384 return obj;
385 }
386
vm2env(JavaVM * vm)387 static JNIEnv* vm2env(JavaVM* vm)
388 {
389 JNIEnv* env = NULL;
390 if (vm->GetEnv((void**)&env, JNI_VERSION_1_4) != JNI_OK || NULL == env)
391 {
392 SkDebugf("------- [%p] vm->GetEnv() failed\n", vm);
393 sk_throw();
394 }
395 return env;
396 }
397
398 ///////////////////////////////////////////////////////////////////////////////
399
AndroidPixelRef(JNIEnv * env,void * storage,size_t size,jbyteArray storageObj,SkColorTable * ctable)400 AndroidPixelRef::AndroidPixelRef(JNIEnv* env, void* storage, size_t size, jbyteArray storageObj,
401 SkColorTable* ctable) : SkMallocPixelRef(storage, size, ctable) {
402 SkASSERT(storage);
403 SkASSERT(env);
404
405 if (env->GetJavaVM(&fVM) != JNI_OK) {
406 SkDebugf("------ [%p] env->GetJavaVM failed\n", env);
407 sk_throw();
408 }
409 fStorageObj = storageObj;
410 fHasGlobalRef = false;
411 fGlobalRefCnt = 0;
412
413 // If storageObj is NULL, the memory was NOT allocated on the Java heap
414 fOnJavaHeap = (storageObj != NULL);
415
416 }
417
~AndroidPixelRef()418 AndroidPixelRef::~AndroidPixelRef() {
419 if (fOnJavaHeap) {
420 JNIEnv* env = vm2env(fVM);
421
422 if (fStorageObj && fHasGlobalRef) {
423 env->DeleteGlobalRef(fStorageObj);
424 }
425 fStorageObj = NULL;
426
427 // Set this to NULL to prevent the SkMallocPixelRef destructor
428 // from freeing the memory.
429 fStorage = NULL;
430 }
431 }
432
setLocalJNIRef(jbyteArray arr)433 void AndroidPixelRef::setLocalJNIRef(jbyteArray arr) {
434 if (!fHasGlobalRef) {
435 fStorageObj = arr;
436 }
437 }
438
globalRef(void * localref)439 void AndroidPixelRef::globalRef(void* localref) {
440 if (fOnJavaHeap && sk_atomic_inc(&fGlobalRefCnt) == 0) {
441 JNIEnv *env = vm2env(fVM);
442
443 // If JNI ref was passed, it is always used
444 if (localref) fStorageObj = (jbyteArray) localref;
445
446 if (fStorageObj == NULL) {
447 SkDebugf("No valid local ref to create a JNI global ref\n");
448 sk_throw();
449 }
450 if (fHasGlobalRef) {
451 // This should never happen
452 SkDebugf("Already holding a JNI global ref");
453 sk_throw();
454 }
455
456 fStorageObj = (jbyteArray) env->NewGlobalRef(fStorageObj);
457 // TODO: Check for failure here
458 fHasGlobalRef = true;
459 }
460 ref();
461 }
462
globalUnref()463 void AndroidPixelRef::globalUnref() {
464 if (fOnJavaHeap && sk_atomic_dec(&fGlobalRefCnt) == 1) {
465 JNIEnv *env = vm2env(fVM);
466 if (!fHasGlobalRef) {
467 SkDebugf("We don't have a global ref!");
468 sk_throw();
469 }
470 env->DeleteGlobalRef(fStorageObj);
471 fStorageObj = NULL;
472 fHasGlobalRef = false;
473 }
474 unref();
475 }
476
477 ///////////////////////////////////////////////////////////////////////////////
478
479 extern "C" jbyte* jniGetNonMovableArrayElements(C_JNIEnv* env, jarray arrayObj);
480
allocateJavaPixelRef(JNIEnv * env,SkBitmap * bitmap,SkColorTable * ctable)481 jbyteArray GraphicsJNI::allocateJavaPixelRef(JNIEnv* env, SkBitmap* bitmap,
482 SkColorTable* ctable) {
483 Sk64 size64 = bitmap->getSize64();
484 if (size64.isNeg() || !size64.is32()) {
485 jniThrowException(env, "java/lang/IllegalArgumentException",
486 "bitmap size exceeds 32bits");
487 return NULL;
488 }
489
490 size_t size = size64.get32();
491 jbyteArray arrayObj = env->NewByteArray(size);
492 if (arrayObj) {
493 // TODO: make this work without jniGetNonMovableArrayElements
494 jbyte* addr = jniGetNonMovableArrayElements(&env->functions, arrayObj);
495 if (addr) {
496 SkPixelRef* pr = new AndroidPixelRef(env, (void*) addr, size, arrayObj, ctable);
497 bitmap->setPixelRef(pr)->unref();
498 // since we're already allocated, we lockPixels right away
499 // HeapAllocator behaves this way too
500 bitmap->lockPixels();
501 }
502 }
503
504 return arrayObj;
505 }
506
507 ///////////////////////////////////////////////////////////////////////////////
508
JavaPixelAllocator(JNIEnv * env)509 JavaPixelAllocator::JavaPixelAllocator(JNIEnv* env)
510 : fStorageObj(NULL),
511 fAllocCount(0) {
512 if (env->GetJavaVM(&fVM) != JNI_OK) {
513 SkDebugf("------ [%p] env->GetJavaVM failed\n", env);
514 sk_throw();
515 }
516 }
517
allocPixelRef(SkBitmap * bitmap,SkColorTable * ctable)518 bool JavaPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) {
519 JNIEnv* env = vm2env(fVM);
520
521 fStorageObj = GraphicsJNI::allocateJavaPixelRef(env, bitmap, ctable);
522 fAllocCount += 1;
523 return fStorageObj != NULL;
524 }
525
526 ////////////////////////////////////////////////////////////////////////////////
527
JavaHeapBitmapRef(JNIEnv * env,SkBitmap * nativeBitmap,jbyteArray buffer)528 JavaHeapBitmapRef::JavaHeapBitmapRef(JNIEnv* env, SkBitmap* nativeBitmap, jbyteArray buffer) {
529 fEnv = env;
530 fNativeBitmap = nativeBitmap;
531 fBuffer = buffer;
532
533 // If the buffer is NULL, the backing memory wasn't allocated on the Java heap
534 if (fBuffer) {
535 ((AndroidPixelRef*) fNativeBitmap->pixelRef())->setLocalJNIRef(fBuffer);
536 }
537 }
538
~JavaHeapBitmapRef()539 JavaHeapBitmapRef::~JavaHeapBitmapRef() {
540 if (fBuffer) {
541 ((AndroidPixelRef*) fNativeBitmap->pixelRef())->setLocalJNIRef(NULL);
542 }
543 }
544
545 ////////////////////////////////////////////////////////////////////////////////
546
make_globalref(JNIEnv * env,const char classname[])547 static jclass make_globalref(JNIEnv* env, const char classname[])
548 {
549 jclass c = env->FindClass(classname);
550 SkASSERT(c);
551 return (jclass)env->NewGlobalRef(c);
552 }
553
getFieldIDCheck(JNIEnv * env,jclass clazz,const char fieldname[],const char type[])554 static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz,
555 const char fieldname[], const char type[])
556 {
557 jfieldID id = env->GetFieldID(clazz, fieldname, type);
558 SkASSERT(id);
559 return id;
560 }
561
register_android_graphics_Graphics(JNIEnv * env)562 int register_android_graphics_Graphics(JNIEnv* env)
563 {
564 jmethodID m;
565 jclass c;
566
567 gRect_class = make_globalref(env, "android/graphics/Rect");
568 gRect_leftFieldID = getFieldIDCheck(env, gRect_class, "left", "I");
569 gRect_topFieldID = getFieldIDCheck(env, gRect_class, "top", "I");
570 gRect_rightFieldID = getFieldIDCheck(env, gRect_class, "right", "I");
571 gRect_bottomFieldID = getFieldIDCheck(env, gRect_class, "bottom", "I");
572
573 gRectF_class = make_globalref(env, "android/graphics/RectF");
574 gRectF_leftFieldID = getFieldIDCheck(env, gRectF_class, "left", "F");
575 gRectF_topFieldID = getFieldIDCheck(env, gRectF_class, "top", "F");
576 gRectF_rightFieldID = getFieldIDCheck(env, gRectF_class, "right", "F");
577 gRectF_bottomFieldID = getFieldIDCheck(env, gRectF_class, "bottom", "F");
578
579 gPoint_class = make_globalref(env, "android/graphics/Point");
580 gPoint_xFieldID = getFieldIDCheck(env, gPoint_class, "x", "I");
581 gPoint_yFieldID = getFieldIDCheck(env, gPoint_class, "y", "I");
582
583 gPointF_class = make_globalref(env, "android/graphics/PointF");
584 gPointF_xFieldID = getFieldIDCheck(env, gPointF_class, "x", "F");
585 gPointF_yFieldID = getFieldIDCheck(env, gPointF_class, "y", "F");
586
587 gBitmap_class = make_globalref(env, "android/graphics/Bitmap");
588 gBitmap_nativeInstanceID = getFieldIDCheck(env, gBitmap_class, "mNativeBitmap", "I");
589 gBitmap_constructorMethodID = env->GetMethodID(gBitmap_class, "<init>",
590 "(I[BZ[B[II)V");
591 gBitmapRegionDecoder_class = make_globalref(env, "android/graphics/BitmapRegionDecoder");
592 gBitmapRegionDecoder_constructorMethodID = env->GetMethodID(gBitmapRegionDecoder_class, "<init>", "(I)V");
593
594 gBitmapConfig_class = make_globalref(env, "android/graphics/Bitmap$Config");
595 gBitmapConfig_nativeInstanceID = getFieldIDCheck(env, gBitmapConfig_class,
596 "nativeInt", "I");
597
598 gCanvas_class = make_globalref(env, "android/graphics/Canvas");
599 gCanvas_nativeInstanceID = getFieldIDCheck(env, gCanvas_class, "mNativeCanvas", "I");
600
601 gPaint_class = make_globalref(env, "android/graphics/Paint");
602 gPaint_nativeInstanceID = getFieldIDCheck(env, gPaint_class, "mNativePaint", "I");
603
604 gPicture_class = make_globalref(env, "android/graphics/Picture");
605 gPicture_nativeInstanceID = getFieldIDCheck(env, gPicture_class, "mNativePicture", "I");
606
607 gRegion_class = make_globalref(env, "android/graphics/Region");
608 gRegion_nativeInstanceID = getFieldIDCheck(env, gRegion_class, "mNativeRegion", "I");
609 gRegion_constructorMethodID = env->GetMethodID(gRegion_class, "<init>",
610 "(II)V");
611
612 return 0;
613 }
614