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 static jmethodID gBitmap_reinitMethodID;
156 static jmethodID gBitmap_getAllocationByteCountMethodID;
157
158 static jclass gBitmapConfig_class;
159 static jfieldID gBitmapConfig_nativeInstanceID;
160
161 static jclass gBitmapRegionDecoder_class;
162 static jmethodID gBitmapRegionDecoder_constructorMethodID;
163
164 static jclass gCanvas_class;
165 static jfieldID gCanvas_nativeInstanceID;
166
167 static jclass gPaint_class;
168 static jfieldID gPaint_nativeInstanceID;
169
170 static jclass gPicture_class;
171 static jfieldID gPicture_nativeInstanceID;
172
173 static jclass gRegion_class;
174 static jfieldID gRegion_nativeInstanceID;
175 static jmethodID gRegion_constructorMethodID;
176
177 ///////////////////////////////////////////////////////////////////////////////
178
get_jrect(JNIEnv * env,jobject obj,int * L,int * T,int * R,int * B)179 void GraphicsJNI::get_jrect(JNIEnv* env, jobject obj, int* L, int* T, int* R, int* B)
180 {
181 SkASSERT(env->IsInstanceOf(obj, gRect_class));
182
183 *L = env->GetIntField(obj, gRect_leftFieldID);
184 *T = env->GetIntField(obj, gRect_topFieldID);
185 *R = env->GetIntField(obj, gRect_rightFieldID);
186 *B = env->GetIntField(obj, gRect_bottomFieldID);
187 }
188
set_jrect(JNIEnv * env,jobject obj,int L,int T,int R,int B)189 void GraphicsJNI::set_jrect(JNIEnv* env, jobject obj, int L, int T, int R, int B)
190 {
191 SkASSERT(env->IsInstanceOf(obj, gRect_class));
192
193 env->SetIntField(obj, gRect_leftFieldID, L);
194 env->SetIntField(obj, gRect_topFieldID, T);
195 env->SetIntField(obj, gRect_rightFieldID, R);
196 env->SetIntField(obj, gRect_bottomFieldID, B);
197 }
198
jrect_to_irect(JNIEnv * env,jobject obj,SkIRect * ir)199 SkIRect* GraphicsJNI::jrect_to_irect(JNIEnv* env, jobject obj, SkIRect* ir)
200 {
201 SkASSERT(env->IsInstanceOf(obj, gRect_class));
202
203 ir->set(env->GetIntField(obj, gRect_leftFieldID),
204 env->GetIntField(obj, gRect_topFieldID),
205 env->GetIntField(obj, gRect_rightFieldID),
206 env->GetIntField(obj, gRect_bottomFieldID));
207 return ir;
208 }
209
irect_to_jrect(const SkIRect & ir,JNIEnv * env,jobject obj)210 void GraphicsJNI::irect_to_jrect(const SkIRect& ir, JNIEnv* env, jobject obj)
211 {
212 SkASSERT(env->IsInstanceOf(obj, gRect_class));
213
214 env->SetIntField(obj, gRect_leftFieldID, ir.fLeft);
215 env->SetIntField(obj, gRect_topFieldID, ir.fTop);
216 env->SetIntField(obj, gRect_rightFieldID, ir.fRight);
217 env->SetIntField(obj, gRect_bottomFieldID, ir.fBottom);
218 }
219
jrectf_to_rect(JNIEnv * env,jobject obj,SkRect * r)220 SkRect* GraphicsJNI::jrectf_to_rect(JNIEnv* env, jobject obj, SkRect* r)
221 {
222 SkASSERT(env->IsInstanceOf(obj, gRectF_class));
223
224 r->set(SkFloatToScalar(env->GetFloatField(obj, gRectF_leftFieldID)),
225 SkFloatToScalar(env->GetFloatField(obj, gRectF_topFieldID)),
226 SkFloatToScalar(env->GetFloatField(obj, gRectF_rightFieldID)),
227 SkFloatToScalar(env->GetFloatField(obj, gRectF_bottomFieldID)));
228 return r;
229 }
230
jrect_to_rect(JNIEnv * env,jobject obj,SkRect * r)231 SkRect* GraphicsJNI::jrect_to_rect(JNIEnv* env, jobject obj, SkRect* r)
232 {
233 SkASSERT(env->IsInstanceOf(obj, gRect_class));
234
235 r->set(SkIntToScalar(env->GetIntField(obj, gRect_leftFieldID)),
236 SkIntToScalar(env->GetIntField(obj, gRect_topFieldID)),
237 SkIntToScalar(env->GetIntField(obj, gRect_rightFieldID)),
238 SkIntToScalar(env->GetIntField(obj, gRect_bottomFieldID)));
239 return r;
240 }
241
rect_to_jrectf(const SkRect & r,JNIEnv * env,jobject obj)242 void GraphicsJNI::rect_to_jrectf(const SkRect& r, JNIEnv* env, jobject obj)
243 {
244 SkASSERT(env->IsInstanceOf(obj, gRectF_class));
245
246 env->SetFloatField(obj, gRectF_leftFieldID, SkScalarToFloat(r.fLeft));
247 env->SetFloatField(obj, gRectF_topFieldID, SkScalarToFloat(r.fTop));
248 env->SetFloatField(obj, gRectF_rightFieldID, SkScalarToFloat(r.fRight));
249 env->SetFloatField(obj, gRectF_bottomFieldID, SkScalarToFloat(r.fBottom));
250 }
251
jpoint_to_ipoint(JNIEnv * env,jobject obj,SkIPoint * point)252 SkIPoint* GraphicsJNI::jpoint_to_ipoint(JNIEnv* env, jobject obj, SkIPoint* point)
253 {
254 SkASSERT(env->IsInstanceOf(obj, gPoint_class));
255
256 point->set(env->GetIntField(obj, gPoint_xFieldID),
257 env->GetIntField(obj, gPoint_yFieldID));
258 return point;
259 }
260
ipoint_to_jpoint(const SkIPoint & ir,JNIEnv * env,jobject obj)261 void GraphicsJNI::ipoint_to_jpoint(const SkIPoint& ir, JNIEnv* env, jobject obj)
262 {
263 SkASSERT(env->IsInstanceOf(obj, gPoint_class));
264
265 env->SetIntField(obj, gPoint_xFieldID, ir.fX);
266 env->SetIntField(obj, gPoint_yFieldID, ir.fY);
267 }
268
jpointf_to_point(JNIEnv * env,jobject obj,SkPoint * point)269 SkPoint* GraphicsJNI::jpointf_to_point(JNIEnv* env, jobject obj, SkPoint* point)
270 {
271 SkASSERT(env->IsInstanceOf(obj, gPointF_class));
272
273 point->set(SkFloatToScalar(env->GetIntField(obj, gPointF_xFieldID)),
274 SkFloatToScalar(env->GetIntField(obj, gPointF_yFieldID)));
275 return point;
276 }
277
point_to_jpointf(const SkPoint & r,JNIEnv * env,jobject obj)278 void GraphicsJNI::point_to_jpointf(const SkPoint& r, JNIEnv* env, jobject obj)
279 {
280 SkASSERT(env->IsInstanceOf(obj, gPointF_class));
281
282 env->SetFloatField(obj, gPointF_xFieldID, SkScalarToFloat(r.fX));
283 env->SetFloatField(obj, gPointF_yFieldID, SkScalarToFloat(r.fY));
284 }
285
getNativeBitmap(JNIEnv * env,jobject bitmap)286 SkBitmap* GraphicsJNI::getNativeBitmap(JNIEnv* env, jobject bitmap) {
287 SkASSERT(env);
288 SkASSERT(bitmap);
289 SkASSERT(env->IsInstanceOf(bitmap, gBitmap_class));
290 SkBitmap* b = (SkBitmap*)env->GetIntField(bitmap, gBitmap_nativeInstanceID);
291 SkASSERT(b);
292 return b;
293 }
294
getNativeBitmapConfig(JNIEnv * env,jobject jconfig)295 SkBitmap::Config GraphicsJNI::getNativeBitmapConfig(JNIEnv* env,
296 jobject jconfig) {
297 SkASSERT(env);
298 if (NULL == jconfig) {
299 return SkBitmap::kNo_Config;
300 }
301 SkASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class));
302 int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID);
303 if (c < 0 || c >= SkBitmap::kConfigCount) {
304 c = SkBitmap::kNo_Config;
305 }
306 return static_cast<SkBitmap::Config>(c);
307 }
308
getNativeCanvas(JNIEnv * env,jobject canvas)309 SkCanvas* GraphicsJNI::getNativeCanvas(JNIEnv* env, jobject canvas) {
310 SkASSERT(env);
311 SkASSERT(canvas);
312 SkASSERT(env->IsInstanceOf(canvas, gCanvas_class));
313 SkCanvas* c = (SkCanvas*)env->GetIntField(canvas, gCanvas_nativeInstanceID);
314 SkASSERT(c);
315 return c;
316 }
317
getNativePaint(JNIEnv * env,jobject paint)318 SkPaint* GraphicsJNI::getNativePaint(JNIEnv* env, jobject paint) {
319 SkASSERT(env);
320 SkASSERT(paint);
321 SkASSERT(env->IsInstanceOf(paint, gPaint_class));
322 SkPaint* p = (SkPaint*)env->GetIntField(paint, gPaint_nativeInstanceID);
323 SkASSERT(p);
324 return p;
325 }
326
getNativePicture(JNIEnv * env,jobject picture)327 SkPicture* GraphicsJNI::getNativePicture(JNIEnv* env, jobject picture)
328 {
329 SkASSERT(env);
330 SkASSERT(picture);
331 SkASSERT(env->IsInstanceOf(picture, gPicture_class));
332 SkPicture* p = (SkPicture*)env->GetIntField(picture, gPicture_nativeInstanceID);
333 SkASSERT(p);
334 return p;
335 }
336
getNativeRegion(JNIEnv * env,jobject region)337 SkRegion* GraphicsJNI::getNativeRegion(JNIEnv* env, jobject region)
338 {
339 SkASSERT(env);
340 SkASSERT(region);
341 SkASSERT(env->IsInstanceOf(region, gRegion_class));
342 SkRegion* r = (SkRegion*)env->GetIntField(region, gRegion_nativeInstanceID);
343 SkASSERT(r);
344 return r;
345 }
346
347 ///////////////////////////////////////////////////////////////////////////////////////////
348
349 // Assert that bitmap's SkAlphaType is consistent with isPremultiplied.
assert_premultiplied(const SkBitmap & bitmap,bool isPremultiplied)350 static void assert_premultiplied(const SkBitmap& bitmap, bool isPremultiplied) {
351 // kOpaque_SkAlphaType and kIgnore_SkAlphaType mean that isPremultiplied is
352 // irrelevant. This just tests to ensure that the SkAlphaType is not
353 // opposite of isPremultiplied.
354 if (isPremultiplied) {
355 SkASSERT(bitmap.alphaType() != kUnpremul_SkAlphaType);
356 } else {
357 SkASSERT(bitmap.alphaType() != kPremul_SkAlphaType);
358 }
359 }
360
createBitmap(JNIEnv * env,SkBitmap * bitmap,jbyteArray buffer,int bitmapCreateFlags,jbyteArray ninepatch,jintArray layoutbounds,int density)361 jobject GraphicsJNI::createBitmap(JNIEnv* env, SkBitmap* bitmap, jbyteArray buffer,
362 int bitmapCreateFlags, jbyteArray ninepatch, jintArray layoutbounds, int density)
363 {
364 SkASSERT(bitmap);
365 SkASSERT(bitmap->pixelRef());
366 bool isMutable = bitmapCreateFlags & kBitmapCreateFlag_Mutable;
367 bool isPremultiplied = bitmapCreateFlags & kBitmapCreateFlag_Premultiplied;
368
369 // The caller needs to have already set the alpha type properly, so the
370 // native SkBitmap stays in sync with the Java Bitmap.
371 assert_premultiplied(*bitmap, isPremultiplied);
372
373 jobject obj = env->NewObject(gBitmap_class, gBitmap_constructorMethodID,
374 static_cast<jint>(reinterpret_cast<uintptr_t>(bitmap)), buffer,
375 bitmap->width(), bitmap->height(), density, isMutable, isPremultiplied,
376 ninepatch, layoutbounds);
377 hasException(env); // For the side effect of logging.
378 return obj;
379 }
380
createBitmap(JNIEnv * env,SkBitmap * bitmap,int bitmapCreateFlags,jbyteArray ninepatch,int density)381 jobject GraphicsJNI::createBitmap(JNIEnv* env, SkBitmap* bitmap, int bitmapCreateFlags,
382 jbyteArray ninepatch, int density)
383 {
384 return createBitmap(env, bitmap, NULL, bitmapCreateFlags, ninepatch, NULL, density);
385 }
386
reinitBitmap(JNIEnv * env,jobject javaBitmap,SkBitmap * bitmap,bool isPremultiplied)387 void GraphicsJNI::reinitBitmap(JNIEnv* env, jobject javaBitmap, SkBitmap* bitmap,
388 bool isPremultiplied)
389 {
390 // The caller needs to have already set the alpha type properly, so the
391 // native SkBitmap stays in sync with the Java Bitmap.
392 assert_premultiplied(*bitmap, isPremultiplied);
393
394 env->CallVoidMethod(javaBitmap, gBitmap_reinitMethodID,
395 bitmap->width(), bitmap->height(), isPremultiplied);
396 }
397
getBitmapAllocationByteCount(JNIEnv * env,jobject javaBitmap)398 int GraphicsJNI::getBitmapAllocationByteCount(JNIEnv* env, jobject javaBitmap)
399 {
400 return env->CallIntMethod(javaBitmap, gBitmap_getAllocationByteCountMethodID);
401 }
402
createBitmapRegionDecoder(JNIEnv * env,SkBitmapRegionDecoder * bitmap)403 jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap)
404 {
405 SkASSERT(bitmap != NULL);
406
407 jobject obj = env->NewObject(gBitmapRegionDecoder_class,
408 gBitmapRegionDecoder_constructorMethodID,
409 static_cast<jint>(reinterpret_cast<uintptr_t>(bitmap)));
410 hasException(env); // For the side effect of logging.
411 return obj;
412 }
413
createRegion(JNIEnv * env,SkRegion * region)414 jobject GraphicsJNI::createRegion(JNIEnv* env, SkRegion* region)
415 {
416 SkASSERT(region != NULL);
417 jobject obj = env->NewObject(gRegion_class, gRegion_constructorMethodID,
418 static_cast<jint>(reinterpret_cast<uintptr_t>(region)), 0);
419 hasException(env); // For the side effect of logging.
420 return obj;
421 }
422
vm2env(JavaVM * vm)423 static JNIEnv* vm2env(JavaVM* vm)
424 {
425 JNIEnv* env = NULL;
426 if (vm->GetEnv((void**)&env, JNI_VERSION_1_4) != JNI_OK || NULL == env)
427 {
428 SkDebugf("------- [%p] vm->GetEnv() failed\n", vm);
429 sk_throw();
430 }
431 return env;
432 }
433
434 ///////////////////////////////////////////////////////////////////////////////
435
AndroidPixelRef(JNIEnv * env,const SkImageInfo & info,void * storage,size_t rowBytes,jbyteArray storageObj,SkColorTable * ctable)436 AndroidPixelRef::AndroidPixelRef(JNIEnv* env, const SkImageInfo& info, void* storage,
437 size_t rowBytes, jbyteArray storageObj, SkColorTable* ctable) :
438 SkMallocPixelRef(info, storage, rowBytes, ctable, (storageObj == NULL)),
439 fWrappedPixelRef(NULL) {
440 SkASSERT(storage);
441 SkASSERT(env);
442
443 if (env->GetJavaVM(&fVM) != JNI_OK) {
444 SkDebugf("------ [%p] env->GetJavaVM failed\n", env);
445 sk_throw();
446 }
447 fStorageObj = storageObj;
448 fHasGlobalRef = false;
449 fGlobalRefCnt = 0;
450
451 // If storageObj is NULL, the memory was NOT allocated on the Java heap
452 fOnJavaHeap = (storageObj != NULL);
453 }
454
AndroidPixelRef(AndroidPixelRef & wrappedPixelRef,const SkImageInfo & info,size_t rowBytes,SkColorTable * ctable)455 AndroidPixelRef::AndroidPixelRef(AndroidPixelRef& wrappedPixelRef, const SkImageInfo& info,
456 size_t rowBytes, SkColorTable* ctable) :
457 SkMallocPixelRef(info, wrappedPixelRef.getAddr(), rowBytes, ctable, false),
458 fWrappedPixelRef(wrappedPixelRef.fWrappedPixelRef ?
459 wrappedPixelRef.fWrappedPixelRef : &wrappedPixelRef)
460 {
461 SkASSERT(fWrappedPixelRef);
462 SkSafeRef(fWrappedPixelRef);
463
464 // don't need to initialize these, as all the relevant logic delegates to the wrapped ref
465 fStorageObj = NULL;
466 fHasGlobalRef = false;
467 fGlobalRefCnt = 0;
468 fOnJavaHeap = false;
469 }
470
~AndroidPixelRef()471 AndroidPixelRef::~AndroidPixelRef() {
472 if (fWrappedPixelRef) {
473 SkSafeUnref(fWrappedPixelRef);
474 } else if (fOnJavaHeap) {
475 JNIEnv* env = vm2env(fVM);
476
477 if (fStorageObj && fHasGlobalRef) {
478 env->DeleteGlobalRef(fStorageObj);
479 }
480 fStorageObj = NULL;
481 }
482 }
getStorageObj()483 jbyteArray AndroidPixelRef::getStorageObj() {
484 if (fWrappedPixelRef) {
485 return fWrappedPixelRef->fStorageObj;
486 }
487 return fStorageObj;
488 }
489
setLocalJNIRef(jbyteArray arr)490 void AndroidPixelRef::setLocalJNIRef(jbyteArray arr) {
491 if (fWrappedPixelRef) {
492 // delegate java obj management to the wrapped ref
493 fWrappedPixelRef->setLocalJNIRef(arr);
494 } else if (!fHasGlobalRef) {
495 fStorageObj = arr;
496 }
497 }
498
globalRef(void * localref)499 void AndroidPixelRef::globalRef(void* localref) {
500 if (fWrappedPixelRef) {
501 // delegate java obj management to the wrapped ref
502 fWrappedPixelRef->globalRef(localref);
503
504 // Note: we only ref and unref the wrapped AndroidPixelRef so that
505 // bitmap->pixelRef()->globalRef() and globalUnref() can be used in a pair, even if
506 // the bitmap has its underlying AndroidPixelRef swapped out/wrapped
507 return;
508 }
509 if (fOnJavaHeap && sk_atomic_inc(&fGlobalRefCnt) == 0) {
510 JNIEnv *env = vm2env(fVM);
511
512 // If JNI ref was passed, it is always used
513 if (localref) fStorageObj = (jbyteArray) localref;
514
515 if (fStorageObj == NULL) {
516 SkDebugf("No valid local ref to create a JNI global ref\n");
517 sk_throw();
518 }
519 if (fHasGlobalRef) {
520 // This should never happen
521 SkDebugf("Already holding a JNI global ref");
522 sk_throw();
523 }
524
525 fStorageObj = (jbyteArray) env->NewGlobalRef(fStorageObj);
526 // TODO: Check for failure here
527 fHasGlobalRef = true;
528 }
529 ref();
530 }
531
globalUnref()532 void AndroidPixelRef::globalUnref() {
533 if (fWrappedPixelRef) {
534 // delegate java obj management to the wrapped ref
535 fWrappedPixelRef->globalUnref();
536 return;
537 }
538 if (fOnJavaHeap && sk_atomic_dec(&fGlobalRefCnt) == 1) {
539 JNIEnv *env = vm2env(fVM);
540 if (!fHasGlobalRef) {
541 SkDebugf("We don't have a global ref!");
542 sk_throw();
543 }
544 env->DeleteGlobalRef(fStorageObj);
545 fStorageObj = NULL;
546 fHasGlobalRef = false;
547 }
548 unref();
549 }
550
551 ///////////////////////////////////////////////////////////////////////////////
552
553 extern "C" jbyte* jniGetNonMovableArrayElements(C_JNIEnv* env, jarray arrayObj);
554
allocateJavaPixelRef(JNIEnv * env,SkBitmap * bitmap,SkColorTable * ctable)555 jbyteArray GraphicsJNI::allocateJavaPixelRef(JNIEnv* env, SkBitmap* bitmap,
556 SkColorTable* ctable) {
557 Sk64 size64 = bitmap->getSize64();
558 if (size64.isNeg() || !size64.is32()) {
559 jniThrowException(env, "java/lang/IllegalArgumentException",
560 "bitmap size exceeds 32bits");
561 return NULL;
562 }
563
564 SkImageInfo bitmapInfo;
565 if (!bitmap->asImageInfo(&bitmapInfo)) {
566 jniThrowException(env, "java/lang/IllegalArgumentException",
567 "unknown bitmap configuration");
568 return NULL;
569 }
570
571 size_t size = size64.get32();
572 jbyteArray arrayObj = env->NewByteArray(size);
573 if (arrayObj) {
574 // TODO: make this work without jniGetNonMovableArrayElements
575 jbyte* addr = jniGetNonMovableArrayElements(&env->functions, arrayObj);
576 if (addr) {
577 SkPixelRef* pr = new AndroidPixelRef(env, bitmapInfo, (void*) addr,
578 bitmap->rowBytes(), arrayObj, ctable);
579 bitmap->setPixelRef(pr)->unref();
580 // since we're already allocated, we lockPixels right away
581 // HeapAllocator behaves this way too
582 bitmap->lockPixels();
583 }
584 }
585
586 return arrayObj;
587 }
588
589 ///////////////////////////////////////////////////////////////////////////////
590
JavaPixelAllocator(JNIEnv * env)591 JavaPixelAllocator::JavaPixelAllocator(JNIEnv* env)
592 : fStorageObj(NULL),
593 fAllocCount(0) {
594 if (env->GetJavaVM(&fVM) != JNI_OK) {
595 SkDebugf("------ [%p] env->GetJavaVM failed\n", env);
596 sk_throw();
597 }
598 }
599
allocPixelRef(SkBitmap * bitmap,SkColorTable * ctable)600 bool JavaPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) {
601 JNIEnv* env = vm2env(fVM);
602
603 fStorageObj = GraphicsJNI::allocateJavaPixelRef(env, bitmap, ctable);
604 fAllocCount += 1;
605 return fStorageObj != NULL;
606 }
607
608 ////////////////////////////////////////////////////////////////////////////////
609
JavaHeapBitmapRef(JNIEnv * env,SkBitmap * nativeBitmap,jbyteArray buffer)610 JavaHeapBitmapRef::JavaHeapBitmapRef(JNIEnv* env, SkBitmap* nativeBitmap, jbyteArray buffer) {
611 fEnv = env;
612 fNativeBitmap = nativeBitmap;
613 fBuffer = buffer;
614
615 // If the buffer is NULL, the backing memory wasn't allocated on the Java heap
616 if (fBuffer) {
617 ((AndroidPixelRef*) fNativeBitmap->pixelRef())->setLocalJNIRef(fBuffer);
618 }
619 }
620
~JavaHeapBitmapRef()621 JavaHeapBitmapRef::~JavaHeapBitmapRef() {
622 if (fBuffer) {
623 ((AndroidPixelRef*) fNativeBitmap->pixelRef())->setLocalJNIRef(NULL);
624 }
625 }
626
627 ////////////////////////////////////////////////////////////////////////////////
628
make_globalref(JNIEnv * env,const char classname[])629 static jclass make_globalref(JNIEnv* env, const char classname[])
630 {
631 jclass c = env->FindClass(classname);
632 SkASSERT(c);
633 return (jclass)env->NewGlobalRef(c);
634 }
635
getFieldIDCheck(JNIEnv * env,jclass clazz,const char fieldname[],const char type[])636 static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz,
637 const char fieldname[], const char type[])
638 {
639 jfieldID id = env->GetFieldID(clazz, fieldname, type);
640 SkASSERT(id);
641 return id;
642 }
643
register_android_graphics_Graphics(JNIEnv * env)644 int register_android_graphics_Graphics(JNIEnv* env)
645 {
646 jmethodID m;
647 jclass c;
648
649 gRect_class = make_globalref(env, "android/graphics/Rect");
650 gRect_leftFieldID = getFieldIDCheck(env, gRect_class, "left", "I");
651 gRect_topFieldID = getFieldIDCheck(env, gRect_class, "top", "I");
652 gRect_rightFieldID = getFieldIDCheck(env, gRect_class, "right", "I");
653 gRect_bottomFieldID = getFieldIDCheck(env, gRect_class, "bottom", "I");
654
655 gRectF_class = make_globalref(env, "android/graphics/RectF");
656 gRectF_leftFieldID = getFieldIDCheck(env, gRectF_class, "left", "F");
657 gRectF_topFieldID = getFieldIDCheck(env, gRectF_class, "top", "F");
658 gRectF_rightFieldID = getFieldIDCheck(env, gRectF_class, "right", "F");
659 gRectF_bottomFieldID = getFieldIDCheck(env, gRectF_class, "bottom", "F");
660
661 gPoint_class = make_globalref(env, "android/graphics/Point");
662 gPoint_xFieldID = getFieldIDCheck(env, gPoint_class, "x", "I");
663 gPoint_yFieldID = getFieldIDCheck(env, gPoint_class, "y", "I");
664
665 gPointF_class = make_globalref(env, "android/graphics/PointF");
666 gPointF_xFieldID = getFieldIDCheck(env, gPointF_class, "x", "F");
667 gPointF_yFieldID = getFieldIDCheck(env, gPointF_class, "y", "F");
668
669 gBitmap_class = make_globalref(env, "android/graphics/Bitmap");
670 gBitmap_nativeInstanceID = getFieldIDCheck(env, gBitmap_class, "mNativeBitmap", "I");
671 gBitmap_constructorMethodID = env->GetMethodID(gBitmap_class, "<init>", "(I[BIIIZZ[B[I)V");
672 gBitmap_reinitMethodID = env->GetMethodID(gBitmap_class, "reinit", "(IIZ)V");
673 gBitmap_getAllocationByteCountMethodID = env->GetMethodID(gBitmap_class, "getAllocationByteCount", "()I");
674 gBitmapRegionDecoder_class = make_globalref(env, "android/graphics/BitmapRegionDecoder");
675 gBitmapRegionDecoder_constructorMethodID = env->GetMethodID(gBitmapRegionDecoder_class, "<init>", "(I)V");
676
677 gBitmapConfig_class = make_globalref(env, "android/graphics/Bitmap$Config");
678 gBitmapConfig_nativeInstanceID = getFieldIDCheck(env, gBitmapConfig_class,
679 "nativeInt", "I");
680
681 gCanvas_class = make_globalref(env, "android/graphics/Canvas");
682 gCanvas_nativeInstanceID = getFieldIDCheck(env, gCanvas_class, "mNativeCanvas", "I");
683
684 gPaint_class = make_globalref(env, "android/graphics/Paint");
685 gPaint_nativeInstanceID = getFieldIDCheck(env, gPaint_class, "mNativePaint", "I");
686
687 gPicture_class = make_globalref(env, "android/graphics/Picture");
688 gPicture_nativeInstanceID = getFieldIDCheck(env, gPicture_class, "mNativePicture", "I");
689
690 gRegion_class = make_globalref(env, "android/graphics/Region");
691 gRegion_nativeInstanceID = getFieldIDCheck(env, gRegion_class, "mNativeRegion", "I");
692 gRegion_constructorMethodID = env->GetMethodID(gRegion_class, "<init>",
693 "(II)V");
694
695 return 0;
696 }
697