1 #define LOG_TAG "GraphicsJNI"
2
3 #include "jni.h"
4 #include "JNIHelp.h"
5 #include "GraphicsJNI.h"
6
7 #include "Canvas.h"
8 #include "SkCanvas.h"
9 #include "SkDevice.h"
10 #include "SkMath.h"
11 #include "SkPicture.h"
12 #include "SkRegion.h"
13 #include <android_runtime/AndroidRuntime.h>
14
doThrowNPE(JNIEnv * env)15 void doThrowNPE(JNIEnv* env) {
16 jniThrowNullPointerException(env, NULL);
17 }
18
doThrowAIOOBE(JNIEnv * env)19 void doThrowAIOOBE(JNIEnv* env) {
20 jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL);
21 }
22
doThrowRE(JNIEnv * env,const char * msg)23 void doThrowRE(JNIEnv* env, const char* msg) {
24 jniThrowRuntimeException(env, msg);
25 }
26
doThrowIAE(JNIEnv * env,const char * msg)27 void doThrowIAE(JNIEnv* env, const char* msg) {
28 jniThrowException(env, "java/lang/IllegalArgumentException", msg);
29 }
30
doThrowISE(JNIEnv * env,const char * msg)31 void doThrowISE(JNIEnv* env, const char* msg) {
32 jniThrowException(env, "java/lang/IllegalStateException", msg);
33 }
34
doThrowOOME(JNIEnv * env,const char * msg)35 void doThrowOOME(JNIEnv* env, const char* msg) {
36 jniThrowException(env, "java/lang/OutOfMemoryError", msg);
37 }
38
doThrowIOE(JNIEnv * env,const char * msg)39 void doThrowIOE(JNIEnv* env, const char* msg) {
40 jniThrowException(env, "java/io/IOException", msg);
41 }
42
hasException(JNIEnv * env)43 bool GraphicsJNI::hasException(JNIEnv *env) {
44 if (env->ExceptionCheck() != 0) {
45 ALOGE("*** Uncaught exception returned from Java call!\n");
46 env->ExceptionDescribe();
47 return true;
48 }
49 return false;
50 }
51
52 ///////////////////////////////////////////////////////////////////////////////
53
AutoJavaFloatArray(JNIEnv * env,jfloatArray array,int minLength,JNIAccess access)54 AutoJavaFloatArray::AutoJavaFloatArray(JNIEnv* env, jfloatArray array,
55 int minLength, JNIAccess access)
56 : fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
57 SkASSERT(env);
58 if (array) {
59 fLen = env->GetArrayLength(array);
60 if (fLen < minLength) {
61 sk_throw();
62 }
63 fPtr = env->GetFloatArrayElements(array, NULL);
64 }
65 fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0;
66 }
67
~AutoJavaFloatArray()68 AutoJavaFloatArray::~AutoJavaFloatArray() {
69 if (fPtr) {
70 fEnv->ReleaseFloatArrayElements(fArray, fPtr, fReleaseMode);
71 }
72 }
73
AutoJavaIntArray(JNIEnv * env,jintArray array,int minLength)74 AutoJavaIntArray::AutoJavaIntArray(JNIEnv* env, jintArray array,
75 int minLength)
76 : fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
77 SkASSERT(env);
78 if (array) {
79 fLen = env->GetArrayLength(array);
80 if (fLen < minLength) {
81 sk_throw();
82 }
83 fPtr = env->GetIntArrayElements(array, NULL);
84 }
85 }
86
~AutoJavaIntArray()87 AutoJavaIntArray::~AutoJavaIntArray() {
88 if (fPtr) {
89 fEnv->ReleaseIntArrayElements(fArray, fPtr, 0);
90 }
91 }
92
AutoJavaShortArray(JNIEnv * env,jshortArray array,int minLength,JNIAccess access)93 AutoJavaShortArray::AutoJavaShortArray(JNIEnv* env, jshortArray array,
94 int minLength, JNIAccess access)
95 : fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
96 SkASSERT(env);
97 if (array) {
98 fLen = env->GetArrayLength(array);
99 if (fLen < minLength) {
100 sk_throw();
101 }
102 fPtr = env->GetShortArrayElements(array, NULL);
103 }
104 fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0;
105 }
106
~AutoJavaShortArray()107 AutoJavaShortArray::~AutoJavaShortArray() {
108 if (fPtr) {
109 fEnv->ReleaseShortArrayElements(fArray, fPtr, fReleaseMode);
110 }
111 }
112
AutoJavaByteArray(JNIEnv * env,jbyteArray array,int minLength)113 AutoJavaByteArray::AutoJavaByteArray(JNIEnv* env, jbyteArray array,
114 int minLength)
115 : fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
116 SkASSERT(env);
117 if (array) {
118 fLen = env->GetArrayLength(array);
119 if (fLen < minLength) {
120 sk_throw();
121 }
122 fPtr = env->GetByteArrayElements(array, NULL);
123 }
124 }
125
~AutoJavaByteArray()126 AutoJavaByteArray::~AutoJavaByteArray() {
127 if (fPtr) {
128 fEnv->ReleaseByteArrayElements(fArray, fPtr, 0);
129 }
130 }
131
132 ///////////////////////////////////////////////////////////////////////////////
133
134 static jclass gRect_class;
135 static jfieldID gRect_leftFieldID;
136 static jfieldID gRect_topFieldID;
137 static jfieldID gRect_rightFieldID;
138 static jfieldID gRect_bottomFieldID;
139
140 static jclass gRectF_class;
141 static jfieldID gRectF_leftFieldID;
142 static jfieldID gRectF_topFieldID;
143 static jfieldID gRectF_rightFieldID;
144 static jfieldID gRectF_bottomFieldID;
145
146 static jclass gPoint_class;
147 static jfieldID gPoint_xFieldID;
148 static jfieldID gPoint_yFieldID;
149
150 static jclass gPointF_class;
151 static jfieldID gPointF_xFieldID;
152 static jfieldID gPointF_yFieldID;
153
154 static jclass gBitmap_class;
155 static jfieldID gBitmap_nativeInstanceID;
156 static jmethodID gBitmap_constructorMethodID;
157 static jmethodID gBitmap_reinitMethodID;
158 static jmethodID gBitmap_getAllocationByteCountMethodID;
159
160 static jclass gBitmapConfig_class;
161 static jfieldID gBitmapConfig_nativeInstanceID;
162
163 static jclass gBitmapRegionDecoder_class;
164 static jmethodID gBitmapRegionDecoder_constructorMethodID;
165
166 static jclass gCanvas_class;
167 static jfieldID gCanvas_nativeInstanceID;
168
169 static jclass gPaint_class;
170 static jfieldID gPaint_nativeInstanceID;
171 static jfieldID gPaint_nativeTypefaceID;
172
173 static jclass gPicture_class;
174 static jfieldID gPicture_nativeInstanceID;
175
176 static jclass gRegion_class;
177 static jfieldID gRegion_nativeInstanceID;
178 static jmethodID gRegion_constructorMethodID;
179
180 static jclass gByte_class;
181 static jobject gVMRuntime;
182 static jclass gVMRuntime_class;
183 static jmethodID gVMRuntime_newNonMovableArray;
184 static jmethodID gVMRuntime_addressOf;
185
186 ///////////////////////////////////////////////////////////////////////////////
187
get_jrect(JNIEnv * env,jobject obj,int * L,int * T,int * R,int * B)188 void GraphicsJNI::get_jrect(JNIEnv* env, jobject obj, int* L, int* T, int* R, int* B)
189 {
190 SkASSERT(env->IsInstanceOf(obj, gRect_class));
191
192 *L = env->GetIntField(obj, gRect_leftFieldID);
193 *T = env->GetIntField(obj, gRect_topFieldID);
194 *R = env->GetIntField(obj, gRect_rightFieldID);
195 *B = env->GetIntField(obj, gRect_bottomFieldID);
196 }
197
set_jrect(JNIEnv * env,jobject obj,int L,int T,int R,int B)198 void GraphicsJNI::set_jrect(JNIEnv* env, jobject obj, int L, int T, int R, int B)
199 {
200 SkASSERT(env->IsInstanceOf(obj, gRect_class));
201
202 env->SetIntField(obj, gRect_leftFieldID, L);
203 env->SetIntField(obj, gRect_topFieldID, T);
204 env->SetIntField(obj, gRect_rightFieldID, R);
205 env->SetIntField(obj, gRect_bottomFieldID, B);
206 }
207
jrect_to_irect(JNIEnv * env,jobject obj,SkIRect * ir)208 SkIRect* GraphicsJNI::jrect_to_irect(JNIEnv* env, jobject obj, SkIRect* ir)
209 {
210 SkASSERT(env->IsInstanceOf(obj, gRect_class));
211
212 ir->set(env->GetIntField(obj, gRect_leftFieldID),
213 env->GetIntField(obj, gRect_topFieldID),
214 env->GetIntField(obj, gRect_rightFieldID),
215 env->GetIntField(obj, gRect_bottomFieldID));
216 return ir;
217 }
218
irect_to_jrect(const SkIRect & ir,JNIEnv * env,jobject obj)219 void GraphicsJNI::irect_to_jrect(const SkIRect& ir, JNIEnv* env, jobject obj)
220 {
221 SkASSERT(env->IsInstanceOf(obj, gRect_class));
222
223 env->SetIntField(obj, gRect_leftFieldID, ir.fLeft);
224 env->SetIntField(obj, gRect_topFieldID, ir.fTop);
225 env->SetIntField(obj, gRect_rightFieldID, ir.fRight);
226 env->SetIntField(obj, gRect_bottomFieldID, ir.fBottom);
227 }
228
jrectf_to_rect(JNIEnv * env,jobject obj,SkRect * r)229 SkRect* GraphicsJNI::jrectf_to_rect(JNIEnv* env, jobject obj, SkRect* r)
230 {
231 SkASSERT(env->IsInstanceOf(obj, gRectF_class));
232
233 r->set(env->GetFloatField(obj, gRectF_leftFieldID),
234 env->GetFloatField(obj, gRectF_topFieldID),
235 env->GetFloatField(obj, gRectF_rightFieldID),
236 env->GetFloatField(obj, gRectF_bottomFieldID));
237 return r;
238 }
239
jrect_to_rect(JNIEnv * env,jobject obj,SkRect * r)240 SkRect* GraphicsJNI::jrect_to_rect(JNIEnv* env, jobject obj, SkRect* r)
241 {
242 SkASSERT(env->IsInstanceOf(obj, gRect_class));
243
244 r->set(SkIntToScalar(env->GetIntField(obj, gRect_leftFieldID)),
245 SkIntToScalar(env->GetIntField(obj, gRect_topFieldID)),
246 SkIntToScalar(env->GetIntField(obj, gRect_rightFieldID)),
247 SkIntToScalar(env->GetIntField(obj, gRect_bottomFieldID)));
248 return r;
249 }
250
rect_to_jrectf(const SkRect & r,JNIEnv * env,jobject obj)251 void GraphicsJNI::rect_to_jrectf(const SkRect& r, JNIEnv* env, jobject obj)
252 {
253 SkASSERT(env->IsInstanceOf(obj, gRectF_class));
254
255 env->SetFloatField(obj, gRectF_leftFieldID, SkScalarToFloat(r.fLeft));
256 env->SetFloatField(obj, gRectF_topFieldID, SkScalarToFloat(r.fTop));
257 env->SetFloatField(obj, gRectF_rightFieldID, SkScalarToFloat(r.fRight));
258 env->SetFloatField(obj, gRectF_bottomFieldID, SkScalarToFloat(r.fBottom));
259 }
260
jpoint_to_ipoint(JNIEnv * env,jobject obj,SkIPoint * point)261 SkIPoint* GraphicsJNI::jpoint_to_ipoint(JNIEnv* env, jobject obj, SkIPoint* point)
262 {
263 SkASSERT(env->IsInstanceOf(obj, gPoint_class));
264
265 point->set(env->GetIntField(obj, gPoint_xFieldID),
266 env->GetIntField(obj, gPoint_yFieldID));
267 return point;
268 }
269
ipoint_to_jpoint(const SkIPoint & ir,JNIEnv * env,jobject obj)270 void GraphicsJNI::ipoint_to_jpoint(const SkIPoint& ir, JNIEnv* env, jobject obj)
271 {
272 SkASSERT(env->IsInstanceOf(obj, gPoint_class));
273
274 env->SetIntField(obj, gPoint_xFieldID, ir.fX);
275 env->SetIntField(obj, gPoint_yFieldID, ir.fY);
276 }
277
jpointf_to_point(JNIEnv * env,jobject obj,SkPoint * point)278 SkPoint* GraphicsJNI::jpointf_to_point(JNIEnv* env, jobject obj, SkPoint* point)
279 {
280 SkASSERT(env->IsInstanceOf(obj, gPointF_class));
281
282 point->set(env->GetIntField(obj, gPointF_xFieldID),
283 env->GetIntField(obj, gPointF_yFieldID));
284 return point;
285 }
286
point_to_jpointf(const SkPoint & r,JNIEnv * env,jobject obj)287 void GraphicsJNI::point_to_jpointf(const SkPoint& r, JNIEnv* env, jobject obj)
288 {
289 SkASSERT(env->IsInstanceOf(obj, gPointF_class));
290
291 env->SetFloatField(obj, gPointF_xFieldID, SkScalarToFloat(r.fX));
292 env->SetFloatField(obj, gPointF_yFieldID, SkScalarToFloat(r.fY));
293 }
294
295 // This enum must keep these int values, to match the int values
296 // in the java Bitmap.Config enum.
297 enum LegacyBitmapConfig {
298 kNo_LegacyBitmapConfig = 0,
299 kA8_LegacyBitmapConfig = 1,
300 kIndex8_LegacyBitmapConfig = 2,
301 kRGB_565_LegacyBitmapConfig = 3,
302 kARGB_4444_LegacyBitmapConfig = 4,
303 kARGB_8888_LegacyBitmapConfig = 5,
304
305 kLastEnum_LegacyBitmapConfig = kARGB_8888_LegacyBitmapConfig
306 };
307
colorTypeToLegacyBitmapConfig(SkColorType colorType)308 jint GraphicsJNI::colorTypeToLegacyBitmapConfig(SkColorType colorType) {
309 switch (colorType) {
310 case kN32_SkColorType:
311 return kARGB_8888_LegacyBitmapConfig;
312 case kARGB_4444_SkColorType:
313 return kARGB_4444_LegacyBitmapConfig;
314 case kRGB_565_SkColorType:
315 return kRGB_565_LegacyBitmapConfig;
316 case kIndex_8_SkColorType:
317 return kIndex8_LegacyBitmapConfig;
318 case kAlpha_8_SkColorType:
319 return kA8_LegacyBitmapConfig;
320 case kUnknown_SkColorType:
321 default:
322 break;
323 }
324 return kNo_LegacyBitmapConfig;
325 }
326
legacyBitmapConfigToColorType(jint legacyConfig)327 SkColorType GraphicsJNI::legacyBitmapConfigToColorType(jint legacyConfig) {
328 const uint8_t gConfig2ColorType[] = {
329 kUnknown_SkColorType,
330 kAlpha_8_SkColorType,
331 kIndex_8_SkColorType,
332 kRGB_565_SkColorType,
333 kARGB_4444_SkColorType,
334 kN32_SkColorType
335 };
336
337 if (legacyConfig < 0 || legacyConfig > kLastEnum_LegacyBitmapConfig) {
338 legacyConfig = kNo_LegacyBitmapConfig;
339 }
340 return static_cast<SkColorType>(gConfig2ColorType[legacyConfig]);
341 }
342
getNativeBitmap(JNIEnv * env,jobject bitmap)343 SkBitmap* GraphicsJNI::getNativeBitmap(JNIEnv* env, jobject bitmap) {
344 SkASSERT(env);
345 SkASSERT(bitmap);
346 SkASSERT(env->IsInstanceOf(bitmap, gBitmap_class));
347 jlong bitmapHandle = env->GetLongField(bitmap, gBitmap_nativeInstanceID);
348 SkBitmap* b = reinterpret_cast<SkBitmap*>(bitmapHandle);
349 SkASSERT(b);
350 return b;
351 }
352
getNativeBitmapColorType(JNIEnv * env,jobject jconfig)353 SkColorType GraphicsJNI::getNativeBitmapColorType(JNIEnv* env, jobject jconfig) {
354 SkASSERT(env);
355 if (NULL == jconfig) {
356 return kUnknown_SkColorType;
357 }
358 SkASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class));
359 int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID);
360 return legacyBitmapConfigToColorType(c);
361 }
362
getNativeCanvas(JNIEnv * env,jobject canvas)363 SkCanvas* GraphicsJNI::getNativeCanvas(JNIEnv* env, jobject canvas) {
364 SkASSERT(env);
365 SkASSERT(canvas);
366 SkASSERT(env->IsInstanceOf(canvas, gCanvas_class));
367 jlong canvasHandle = env->GetLongField(canvas, gCanvas_nativeInstanceID);
368 SkCanvas* c = reinterpret_cast<android::Canvas*>(canvasHandle)->getSkCanvas();
369 SkASSERT(c);
370 return c;
371 }
372
getNativePaint(JNIEnv * env,jobject paint)373 android::Paint* GraphicsJNI::getNativePaint(JNIEnv* env, jobject paint) {
374 SkASSERT(env);
375 SkASSERT(paint);
376 SkASSERT(env->IsInstanceOf(paint, gPaint_class));
377 jlong paintHandle = env->GetLongField(paint, gPaint_nativeInstanceID);
378 android::Paint* p = reinterpret_cast<android::Paint*>(paintHandle);
379 SkASSERT(p);
380 return p;
381 }
382
getNativeTypeface(JNIEnv * env,jobject paint)383 android::TypefaceImpl* GraphicsJNI::getNativeTypeface(JNIEnv* env, jobject paint) {
384 SkASSERT(env);
385 SkASSERT(paint);
386 SkASSERT(env->IsInstanceOf(paint, gPaint_class));
387 jlong typefaceHandle = env->GetLongField(paint, gPaint_nativeTypefaceID);
388 android::TypefaceImpl* p = reinterpret_cast<android::TypefaceImpl*>(typefaceHandle);
389 return p;
390 }
391
getNativeRegion(JNIEnv * env,jobject region)392 SkRegion* GraphicsJNI::getNativeRegion(JNIEnv* env, jobject region)
393 {
394 SkASSERT(env);
395 SkASSERT(region);
396 SkASSERT(env->IsInstanceOf(region, gRegion_class));
397 jlong regionHandle = env->GetLongField(region, gRegion_nativeInstanceID);
398 SkRegion* r = reinterpret_cast<SkRegion*>(regionHandle);
399 SkASSERT(r);
400 return r;
401 }
402
403 ///////////////////////////////////////////////////////////////////////////////////////////
404
405 // Assert that bitmap's SkAlphaType is consistent with isPremultiplied.
assert_premultiplied(const SkBitmap & bitmap,bool isPremultiplied)406 static void assert_premultiplied(const SkBitmap& bitmap, bool isPremultiplied) {
407 // kOpaque_SkAlphaType and kIgnore_SkAlphaType mean that isPremultiplied is
408 // irrelevant. This just tests to ensure that the SkAlphaType is not
409 // opposite of isPremultiplied.
410 if (isPremultiplied) {
411 SkASSERT(bitmap.alphaType() != kUnpremul_SkAlphaType);
412 } else {
413 SkASSERT(bitmap.alphaType() != kPremul_SkAlphaType);
414 }
415 }
416
createBitmap(JNIEnv * env,SkBitmap * bitmap,jbyteArray buffer,int bitmapCreateFlags,jbyteArray ninePatchChunk,jobject ninePatchInsets,int density)417 jobject GraphicsJNI::createBitmap(JNIEnv* env, SkBitmap* bitmap, jbyteArray buffer,
418 int bitmapCreateFlags, jbyteArray ninePatchChunk, jobject ninePatchInsets, int density)
419 {
420 SkASSERT(bitmap);
421 SkASSERT(bitmap->pixelRef());
422 SkASSERT(!env->ExceptionCheck());
423 bool isMutable = bitmapCreateFlags & kBitmapCreateFlag_Mutable;
424 bool isPremultiplied = bitmapCreateFlags & kBitmapCreateFlag_Premultiplied;
425
426 // The caller needs to have already set the alpha type properly, so the
427 // native SkBitmap stays in sync with the Java Bitmap.
428 assert_premultiplied(*bitmap, isPremultiplied);
429
430 jobject obj = env->NewObject(gBitmap_class, gBitmap_constructorMethodID,
431 reinterpret_cast<jlong>(bitmap), buffer,
432 bitmap->width(), bitmap->height(), density, isMutable, isPremultiplied,
433 ninePatchChunk, ninePatchInsets);
434 hasException(env); // For the side effect of logging.
435 return obj;
436 }
437
reinitBitmap(JNIEnv * env,jobject javaBitmap,SkBitmap * bitmap,bool isPremultiplied)438 void GraphicsJNI::reinitBitmap(JNIEnv* env, jobject javaBitmap, SkBitmap* bitmap,
439 bool isPremultiplied)
440 {
441 // The caller needs to have already set the alpha type properly, so the
442 // native SkBitmap stays in sync with the Java Bitmap.
443 assert_premultiplied(*bitmap, isPremultiplied);
444
445 env->CallVoidMethod(javaBitmap, gBitmap_reinitMethodID,
446 bitmap->width(), bitmap->height(), isPremultiplied);
447 }
448
getBitmapAllocationByteCount(JNIEnv * env,jobject javaBitmap)449 int GraphicsJNI::getBitmapAllocationByteCount(JNIEnv* env, jobject javaBitmap)
450 {
451 return env->CallIntMethod(javaBitmap, gBitmap_getAllocationByteCountMethodID);
452 }
453
createBitmapRegionDecoder(JNIEnv * env,SkBitmapRegionDecoder * bitmap)454 jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap)
455 {
456 SkASSERT(bitmap != NULL);
457
458 jobject obj = env->NewObject(gBitmapRegionDecoder_class,
459 gBitmapRegionDecoder_constructorMethodID,
460 reinterpret_cast<jlong>(bitmap));
461 hasException(env); // For the side effect of logging.
462 return obj;
463 }
464
createRegion(JNIEnv * env,SkRegion * region)465 jobject GraphicsJNI::createRegion(JNIEnv* env, SkRegion* region)
466 {
467 SkASSERT(region != NULL);
468 jobject obj = env->NewObject(gRegion_class, gRegion_constructorMethodID,
469 reinterpret_cast<jlong>(region), 0);
470 hasException(env); // For the side effect of logging.
471 return obj;
472 }
473
vm2env(JavaVM * vm)474 static JNIEnv* vm2env(JavaVM* vm)
475 {
476 JNIEnv* env = NULL;
477 if (vm->GetEnv((void**)&env, JNI_VERSION_1_4) != JNI_OK || NULL == env)
478 {
479 SkDebugf("------- [%p] vm->GetEnv() failed\n", vm);
480 sk_throw();
481 }
482 return env;
483 }
484
485 ///////////////////////////////////////////////////////////////////////////////
486
AndroidPixelRef(JNIEnv * env,const SkImageInfo & info,void * storage,size_t rowBytes,jbyteArray storageObj,SkColorTable * ctable)487 AndroidPixelRef::AndroidPixelRef(JNIEnv* env, const SkImageInfo& info, void* storage,
488 size_t rowBytes, jbyteArray storageObj, SkColorTable* ctable) :
489 SkMallocPixelRef(info, storage, rowBytes, ctable, (storageObj == NULL)),
490 fWrappedPixelRef(NULL) {
491 SkASSERT(storage);
492 SkASSERT(env);
493
494 if (env->GetJavaVM(&fVM) != JNI_OK) {
495 SkDebugf("------ [%p] env->GetJavaVM failed\n", env);
496 sk_throw();
497 }
498 fStorageObj = storageObj;
499 fHasGlobalRef = false;
500 fGlobalRefCnt = 0;
501
502 // If storageObj is NULL, the memory was NOT allocated on the Java heap
503 fOnJavaHeap = (storageObj != NULL);
504
505 }
506
AndroidPixelRef(AndroidPixelRef & wrappedPixelRef,const SkImageInfo & info,size_t rowBytes,SkColorTable * ctable)507 AndroidPixelRef::AndroidPixelRef(AndroidPixelRef& wrappedPixelRef, const SkImageInfo& info,
508 size_t rowBytes, SkColorTable* ctable) :
509 SkMallocPixelRef(info, wrappedPixelRef.getAddr(), rowBytes, ctable, false),
510 fWrappedPixelRef(wrappedPixelRef.fWrappedPixelRef ?
511 wrappedPixelRef.fWrappedPixelRef : &wrappedPixelRef)
512 {
513 SkASSERT(fWrappedPixelRef);
514 SkSafeRef(fWrappedPixelRef);
515
516 // don't need to initialize these, as all the relevant logic delegates to the wrapped ref
517 fStorageObj = NULL;
518 fHasGlobalRef = false;
519 fGlobalRefCnt = 0;
520 fOnJavaHeap = false;
521 }
522
~AndroidPixelRef()523 AndroidPixelRef::~AndroidPixelRef() {
524 if (fWrappedPixelRef) {
525 SkSafeUnref(fWrappedPixelRef);
526 } else if (fOnJavaHeap) {
527 JNIEnv* env = vm2env(fVM);
528
529 if (fStorageObj && fHasGlobalRef) {
530 env->DeleteGlobalRef(fStorageObj);
531 }
532 fStorageObj = NULL;
533 }
534 }
getStorageObj()535 jbyteArray AndroidPixelRef::getStorageObj() {
536 if (fWrappedPixelRef) {
537 return fWrappedPixelRef->fStorageObj;
538 }
539 return fStorageObj;
540 }
541
setLocalJNIRef(jbyteArray arr)542 void AndroidPixelRef::setLocalJNIRef(jbyteArray arr) {
543 if (fWrappedPixelRef) {
544 // delegate java obj management to the wrapped ref
545 fWrappedPixelRef->setLocalJNIRef(arr);
546 } else if (!fHasGlobalRef) {
547 fStorageObj = arr;
548 }
549 }
550
globalRef(void * localref)551 void AndroidPixelRef::globalRef(void* localref) {
552 if (fWrappedPixelRef) {
553 // delegate java obj management to the wrapped ref
554 fWrappedPixelRef->globalRef(localref);
555
556 // Note: we only ref and unref the wrapped AndroidPixelRef so that
557 // bitmap->pixelRef()->globalRef() and globalUnref() can be used in a pair, even if
558 // the bitmap has its underlying AndroidPixelRef swapped out/wrapped
559 return;
560 }
561 if (fOnJavaHeap && sk_atomic_inc(&fGlobalRefCnt) == 0) {
562 JNIEnv *env = vm2env(fVM);
563
564 // If JNI ref was passed, it is always used
565 if (localref) fStorageObj = (jbyteArray) localref;
566
567 if (fStorageObj == NULL) {
568 SkDebugf("No valid local ref to create a JNI global ref\n");
569 sk_throw();
570 }
571 if (fHasGlobalRef) {
572 // This should never happen
573 SkDebugf("Already holding a JNI global ref");
574 sk_throw();
575 }
576
577 fStorageObj = (jbyteArray) env->NewGlobalRef(fStorageObj);
578 // TODO: Check for failure here
579 fHasGlobalRef = true;
580 }
581 ref();
582 }
583
globalUnref()584 void AndroidPixelRef::globalUnref() {
585 if (fWrappedPixelRef) {
586 // delegate java obj management to the wrapped ref
587 fWrappedPixelRef->globalUnref();
588 return;
589 }
590 if (fOnJavaHeap && sk_atomic_dec(&fGlobalRefCnt) == 1) {
591 JNIEnv *env = vm2env(fVM);
592 if (!fHasGlobalRef) {
593 SkDebugf("We don't have a global ref!");
594 sk_throw();
595 }
596 env->DeleteGlobalRef(fStorageObj);
597 fStorageObj = NULL;
598 fHasGlobalRef = false;
599 }
600 unref();
601 }
602
603 ///////////////////////////////////////////////////////////////////////////////
604
allocateJavaPixelRef(JNIEnv * env,SkBitmap * bitmap,SkColorTable * ctable)605 jbyteArray GraphicsJNI::allocateJavaPixelRef(JNIEnv* env, SkBitmap* bitmap,
606 SkColorTable* ctable) {
607 const SkImageInfo& info = bitmap->info();
608 if (info.fColorType == kUnknown_SkColorType) {
609 doThrowIAE(env, "unknown bitmap configuration");
610 return NULL;
611 }
612
613 const size_t size = bitmap->getSize();
614 jbyteArray arrayObj = (jbyteArray) env->CallObjectMethod(gVMRuntime,
615 gVMRuntime_newNonMovableArray,
616 gByte_class, size);
617 if (env->ExceptionCheck() != 0) {
618 return NULL;
619 }
620 SkASSERT(arrayObj);
621 jbyte* addr = (jbyte*) env->CallLongMethod(gVMRuntime, gVMRuntime_addressOf, arrayObj);
622 if (env->ExceptionCheck() != 0) {
623 return NULL;
624 }
625 SkASSERT(addr);
626 SkPixelRef* pr = new AndroidPixelRef(env, info, (void*) addr,
627 bitmap->rowBytes(), arrayObj, ctable);
628 bitmap->setPixelRef(pr)->unref();
629 // since we're already allocated, we lockPixels right away
630 // HeapAllocator behaves this way too
631 bitmap->lockPixels();
632
633 return arrayObj;
634 }
635
636 ///////////////////////////////////////////////////////////////////////////////
637
JavaPixelAllocator(JNIEnv * env)638 JavaPixelAllocator::JavaPixelAllocator(JNIEnv* env)
639 : fStorageObj(NULL),
640 fAllocCount(0) {
641 if (env->GetJavaVM(&fVM) != JNI_OK) {
642 SkDebugf("------ [%p] env->GetJavaVM failed\n", env);
643 sk_throw();
644 }
645 }
646
allocPixelRef(SkBitmap * bitmap,SkColorTable * ctable)647 bool JavaPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) {
648 JNIEnv* env = vm2env(fVM);
649
650 fStorageObj = GraphicsJNI::allocateJavaPixelRef(env, bitmap, ctable);
651 fAllocCount += 1;
652 return fStorageObj != NULL;
653 }
654
655 ////////////////////////////////////////////////////////////////////////////////
656
JavaHeapBitmapRef(JNIEnv * env,SkBitmap * nativeBitmap,jbyteArray buffer)657 JavaHeapBitmapRef::JavaHeapBitmapRef(JNIEnv* env, SkBitmap* nativeBitmap, jbyteArray buffer) {
658 fEnv = env;
659 fNativeBitmap = nativeBitmap;
660 fBuffer = buffer;
661
662 // If the buffer is NULL, the backing memory wasn't allocated on the Java heap
663 if (fBuffer) {
664 ((AndroidPixelRef*) fNativeBitmap->pixelRef())->setLocalJNIRef(fBuffer);
665 }
666 }
667
~JavaHeapBitmapRef()668 JavaHeapBitmapRef::~JavaHeapBitmapRef() {
669 if (fBuffer) {
670 ((AndroidPixelRef*) fNativeBitmap->pixelRef())->setLocalJNIRef(NULL);
671 }
672 }
673
674 ////////////////////////////////////////////////////////////////////////////////
675
make_globalref(JNIEnv * env,const char classname[])676 static jclass make_globalref(JNIEnv* env, const char classname[])
677 {
678 jclass c = env->FindClass(classname);
679 SkASSERT(c);
680 return (jclass) env->NewGlobalRef(c);
681 }
682
getFieldIDCheck(JNIEnv * env,jclass clazz,const char fieldname[],const char type[])683 static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz,
684 const char fieldname[], const char type[])
685 {
686 jfieldID id = env->GetFieldID(clazz, fieldname, type);
687 SkASSERT(id);
688 return id;
689 }
690
register_android_graphics_Graphics(JNIEnv * env)691 int register_android_graphics_Graphics(JNIEnv* env)
692 {
693 jmethodID m;
694 jclass c;
695
696 gRect_class = make_globalref(env, "android/graphics/Rect");
697 gRect_leftFieldID = getFieldIDCheck(env, gRect_class, "left", "I");
698 gRect_topFieldID = getFieldIDCheck(env, gRect_class, "top", "I");
699 gRect_rightFieldID = getFieldIDCheck(env, gRect_class, "right", "I");
700 gRect_bottomFieldID = getFieldIDCheck(env, gRect_class, "bottom", "I");
701
702 gRectF_class = make_globalref(env, "android/graphics/RectF");
703 gRectF_leftFieldID = getFieldIDCheck(env, gRectF_class, "left", "F");
704 gRectF_topFieldID = getFieldIDCheck(env, gRectF_class, "top", "F");
705 gRectF_rightFieldID = getFieldIDCheck(env, gRectF_class, "right", "F");
706 gRectF_bottomFieldID = getFieldIDCheck(env, gRectF_class, "bottom", "F");
707
708 gPoint_class = make_globalref(env, "android/graphics/Point");
709 gPoint_xFieldID = getFieldIDCheck(env, gPoint_class, "x", "I");
710 gPoint_yFieldID = getFieldIDCheck(env, gPoint_class, "y", "I");
711
712 gPointF_class = make_globalref(env, "android/graphics/PointF");
713 gPointF_xFieldID = getFieldIDCheck(env, gPointF_class, "x", "F");
714 gPointF_yFieldID = getFieldIDCheck(env, gPointF_class, "y", "F");
715
716 gBitmap_class = make_globalref(env, "android/graphics/Bitmap");
717 gBitmap_nativeInstanceID = getFieldIDCheck(env, gBitmap_class, "mNativeBitmap", "J");
718 gBitmap_constructorMethodID = env->GetMethodID(gBitmap_class, "<init>", "(J[BIIIZZ[BLandroid/graphics/NinePatch$InsetStruct;)V");
719 gBitmap_reinitMethodID = env->GetMethodID(gBitmap_class, "reinit", "(IIZ)V");
720 gBitmap_getAllocationByteCountMethodID = env->GetMethodID(gBitmap_class, "getAllocationByteCount", "()I");
721 gBitmapRegionDecoder_class = make_globalref(env, "android/graphics/BitmapRegionDecoder");
722 gBitmapRegionDecoder_constructorMethodID = env->GetMethodID(gBitmapRegionDecoder_class, "<init>", "(J)V");
723
724 gBitmapConfig_class = make_globalref(env, "android/graphics/Bitmap$Config");
725 gBitmapConfig_nativeInstanceID = getFieldIDCheck(env, gBitmapConfig_class,
726 "nativeInt", "I");
727
728 gCanvas_class = make_globalref(env, "android/graphics/Canvas");
729 gCanvas_nativeInstanceID = getFieldIDCheck(env, gCanvas_class, "mNativeCanvasWrapper", "J");
730
731 gPaint_class = make_globalref(env, "android/graphics/Paint");
732 gPaint_nativeInstanceID = getFieldIDCheck(env, gPaint_class, "mNativePaint", "J");
733 gPaint_nativeTypefaceID = getFieldIDCheck(env, gPaint_class, "mNativeTypeface", "J");
734
735 gPicture_class = make_globalref(env, "android/graphics/Picture");
736 gPicture_nativeInstanceID = getFieldIDCheck(env, gPicture_class, "mNativePicture", "J");
737
738 gRegion_class = make_globalref(env, "android/graphics/Region");
739 gRegion_nativeInstanceID = getFieldIDCheck(env, gRegion_class, "mNativeRegion", "J");
740 gRegion_constructorMethodID = env->GetMethodID(gRegion_class, "<init>",
741 "(JI)V");
742
743 c = env->FindClass("java/lang/Byte");
744 gByte_class = (jclass) env->NewGlobalRef(
745 env->GetStaticObjectField(c, env->GetStaticFieldID(c, "TYPE", "Ljava/lang/Class;")));
746
747 gVMRuntime_class = make_globalref(env, "dalvik/system/VMRuntime");
748 m = env->GetStaticMethodID(gVMRuntime_class, "getRuntime", "()Ldalvik/system/VMRuntime;");
749 gVMRuntime = env->NewGlobalRef(env->CallStaticObjectMethod(gVMRuntime_class, m));
750 gVMRuntime_newNonMovableArray = env->GetMethodID(gVMRuntime_class, "newNonMovableArray",
751 "(Ljava/lang/Class;I)Ljava/lang/Object;");
752 gVMRuntime_addressOf = env->GetMethodID(gVMRuntime_class, "addressOf", "(Ljava/lang/Object;)J");
753
754 return 0;
755 }
756