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 if (!canvasHandle) {
369 return NULL;
370 }
371 SkCanvas* c = reinterpret_cast<android::Canvas*>(canvasHandle)->getSkCanvas();
372 SkASSERT(c);
373 return c;
374 }
375
getNativePaint(JNIEnv * env,jobject paint)376 android::Paint* GraphicsJNI::getNativePaint(JNIEnv* env, jobject paint) {
377 SkASSERT(env);
378 SkASSERT(paint);
379 SkASSERT(env->IsInstanceOf(paint, gPaint_class));
380 jlong paintHandle = env->GetLongField(paint, gPaint_nativeInstanceID);
381 android::Paint* p = reinterpret_cast<android::Paint*>(paintHandle);
382 SkASSERT(p);
383 return p;
384 }
385
getNativeTypeface(JNIEnv * env,jobject paint)386 android::TypefaceImpl* GraphicsJNI::getNativeTypeface(JNIEnv* env, jobject paint) {
387 SkASSERT(env);
388 SkASSERT(paint);
389 SkASSERT(env->IsInstanceOf(paint, gPaint_class));
390 jlong typefaceHandle = env->GetLongField(paint, gPaint_nativeTypefaceID);
391 android::TypefaceImpl* p = reinterpret_cast<android::TypefaceImpl*>(typefaceHandle);
392 return p;
393 }
394
getNativeRegion(JNIEnv * env,jobject region)395 SkRegion* GraphicsJNI::getNativeRegion(JNIEnv* env, jobject region)
396 {
397 SkASSERT(env);
398 SkASSERT(region);
399 SkASSERT(env->IsInstanceOf(region, gRegion_class));
400 jlong regionHandle = env->GetLongField(region, gRegion_nativeInstanceID);
401 SkRegion* r = reinterpret_cast<SkRegion*>(regionHandle);
402 SkASSERT(r);
403 return r;
404 }
405
406 ///////////////////////////////////////////////////////////////////////////////////////////
407
408 // Assert that bitmap's SkAlphaType is consistent with isPremultiplied.
assert_premultiplied(const SkBitmap & bitmap,bool isPremultiplied)409 static void assert_premultiplied(const SkBitmap& bitmap, bool isPremultiplied) {
410 // kOpaque_SkAlphaType and kIgnore_SkAlphaType mean that isPremultiplied is
411 // irrelevant. This just tests to ensure that the SkAlphaType is not
412 // opposite of isPremultiplied.
413 if (isPremultiplied) {
414 SkASSERT(bitmap.alphaType() != kUnpremul_SkAlphaType);
415 } else {
416 SkASSERT(bitmap.alphaType() != kPremul_SkAlphaType);
417 }
418 }
419
createBitmap(JNIEnv * env,SkBitmap * bitmap,jbyteArray buffer,int bitmapCreateFlags,jbyteArray ninePatchChunk,jobject ninePatchInsets,int density)420 jobject GraphicsJNI::createBitmap(JNIEnv* env, SkBitmap* bitmap, jbyteArray buffer,
421 int bitmapCreateFlags, jbyteArray ninePatchChunk, jobject ninePatchInsets, int density)
422 {
423 SkASSERT(bitmap);
424 SkASSERT(bitmap->pixelRef());
425 SkASSERT(!env->ExceptionCheck());
426 bool isMutable = bitmapCreateFlags & kBitmapCreateFlag_Mutable;
427 bool isPremultiplied = bitmapCreateFlags & kBitmapCreateFlag_Premultiplied;
428
429 // The caller needs to have already set the alpha type properly, so the
430 // native SkBitmap stays in sync with the Java Bitmap.
431 assert_premultiplied(*bitmap, isPremultiplied);
432
433 jobject obj = env->NewObject(gBitmap_class, gBitmap_constructorMethodID,
434 reinterpret_cast<jlong>(bitmap), buffer,
435 bitmap->width(), bitmap->height(), density, isMutable, isPremultiplied,
436 ninePatchChunk, ninePatchInsets);
437 hasException(env); // For the side effect of logging.
438 return obj;
439 }
440
reinitBitmap(JNIEnv * env,jobject javaBitmap,SkBitmap * bitmap,bool isPremultiplied)441 void GraphicsJNI::reinitBitmap(JNIEnv* env, jobject javaBitmap, SkBitmap* bitmap,
442 bool isPremultiplied)
443 {
444 // The caller needs to have already set the alpha type properly, so the
445 // native SkBitmap stays in sync with the Java Bitmap.
446 assert_premultiplied(*bitmap, isPremultiplied);
447
448 env->CallVoidMethod(javaBitmap, gBitmap_reinitMethodID,
449 bitmap->width(), bitmap->height(), isPremultiplied);
450 }
451
getBitmapAllocationByteCount(JNIEnv * env,jobject javaBitmap)452 int GraphicsJNI::getBitmapAllocationByteCount(JNIEnv* env, jobject javaBitmap)
453 {
454 return env->CallIntMethod(javaBitmap, gBitmap_getAllocationByteCountMethodID);
455 }
456
createBitmapRegionDecoder(JNIEnv * env,SkBitmapRegionDecoder * bitmap)457 jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap)
458 {
459 SkASSERT(bitmap != NULL);
460
461 jobject obj = env->NewObject(gBitmapRegionDecoder_class,
462 gBitmapRegionDecoder_constructorMethodID,
463 reinterpret_cast<jlong>(bitmap));
464 hasException(env); // For the side effect of logging.
465 return obj;
466 }
467
createRegion(JNIEnv * env,SkRegion * region)468 jobject GraphicsJNI::createRegion(JNIEnv* env, SkRegion* region)
469 {
470 SkASSERT(region != NULL);
471 jobject obj = env->NewObject(gRegion_class, gRegion_constructorMethodID,
472 reinterpret_cast<jlong>(region), 0);
473 hasException(env); // For the side effect of logging.
474 return obj;
475 }
476
vm2env(JavaVM * vm)477 static JNIEnv* vm2env(JavaVM* vm)
478 {
479 JNIEnv* env = NULL;
480 if (vm->GetEnv((void**)&env, JNI_VERSION_1_4) != JNI_OK || NULL == env)
481 {
482 SkDebugf("------- [%p] vm->GetEnv() failed\n", vm);
483 sk_throw();
484 }
485 return env;
486 }
487
488 ///////////////////////////////////////////////////////////////////////////////
489
AndroidPixelRef(JNIEnv * env,const SkImageInfo & info,void * storage,size_t rowBytes,jbyteArray storageObj,SkColorTable * ctable)490 AndroidPixelRef::AndroidPixelRef(JNIEnv* env, const SkImageInfo& info, void* storage,
491 size_t rowBytes, jbyteArray storageObj, SkColorTable* ctable) :
492 SkMallocPixelRef(info, storage, rowBytes, ctable, (storageObj == NULL)),
493 fWrappedPixelRef(NULL) {
494 SkASSERT(storage);
495 SkASSERT(storageObj);
496 SkASSERT(env);
497
498 if (env->GetJavaVM(&fVM) != JNI_OK) {
499 SkDebugf("------ [%p] env->GetJavaVM failed\n", env);
500 sk_throw();
501 }
502
503 fStorageObj = (jbyteArray) env->NewGlobalRef(storageObj);
504 }
505
AndroidPixelRef(AndroidPixelRef & wrappedPixelRef,const SkImageInfo & info,size_t rowBytes,SkColorTable * ctable)506 AndroidPixelRef::AndroidPixelRef(AndroidPixelRef& wrappedPixelRef, const SkImageInfo& info,
507 size_t rowBytes, SkColorTable* ctable) :
508 SkMallocPixelRef(info, wrappedPixelRef.getAddr(), rowBytes, ctable, false),
509 fWrappedPixelRef(wrappedPixelRef.fWrappedPixelRef ?
510 wrappedPixelRef.fWrappedPixelRef : &wrappedPixelRef)
511 {
512 SkASSERT(fWrappedPixelRef);
513 SkSafeRef(fWrappedPixelRef);
514
515 // don't need to initialize this, as all the relevant logic delegates to the wrapped ref
516 fStorageObj = NULL;
517 }
518
~AndroidPixelRef()519 AndroidPixelRef::~AndroidPixelRef() {
520 if (fWrappedPixelRef) {
521 SkSafeUnref(fWrappedPixelRef);
522 } else {
523 SkASSERT(fStorageObj);
524 JNIEnv* env = vm2env(fVM);
525 env->DeleteGlobalRef(fStorageObj);
526 }
527 }
528
529 ///////////////////////////////////////////////////////////////////////////////
530
allocateJavaPixelRef(JNIEnv * env,SkBitmap * bitmap,SkColorTable * ctable)531 jbyteArray GraphicsJNI::allocateJavaPixelRef(JNIEnv* env, SkBitmap* bitmap,
532 SkColorTable* ctable) {
533 const SkImageInfo& info = bitmap->info();
534 if (info.fColorType == kUnknown_SkColorType) {
535 doThrowIAE(env, "unknown bitmap configuration");
536 return NULL;
537 }
538
539 const int64_t size64 = bitmap->computeSize64();
540 if (!sk_64_isS32(size64)) {
541 doThrowIAE(env, "bitmap size exceeds 32 bits");
542 return NULL;
543 }
544 const size_t size = sk_64_asS32(size64);
545 jbyteArray arrayObj = (jbyteArray) env->CallObjectMethod(gVMRuntime,
546 gVMRuntime_newNonMovableArray,
547 gByte_class, size);
548 if (env->ExceptionCheck() != 0) {
549 return NULL;
550 }
551 SkASSERT(arrayObj);
552 jbyte* addr = (jbyte*) env->CallLongMethod(gVMRuntime, gVMRuntime_addressOf, arrayObj);
553 if (env->ExceptionCheck() != 0) {
554 return NULL;
555 }
556 SkASSERT(addr);
557 SkPixelRef* pr = new AndroidPixelRef(env, info, (void*) addr,
558 bitmap->rowBytes(), arrayObj, ctable);
559 bitmap->setPixelRef(pr)->unref();
560 // since we're already allocated, we lockPixels right away
561 // HeapAllocator behaves this way too
562 bitmap->lockPixels();
563
564 return arrayObj;
565 }
566
567 ///////////////////////////////////////////////////////////////////////////////
568
JavaPixelAllocator(JNIEnv * env)569 JavaPixelAllocator::JavaPixelAllocator(JNIEnv* env)
570 : fStorageObj(NULL),
571 fAllocCount(0) {
572 if (env->GetJavaVM(&fVM) != JNI_OK) {
573 SkDebugf("------ [%p] env->GetJavaVM failed\n", env);
574 sk_throw();
575 }
576 }
577
allocPixelRef(SkBitmap * bitmap,SkColorTable * ctable)578 bool JavaPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) {
579 JNIEnv* env = vm2env(fVM);
580
581 fStorageObj = GraphicsJNI::allocateJavaPixelRef(env, bitmap, ctable);
582 fAllocCount += 1;
583 return fStorageObj != NULL;
584 }
585
586 ////////////////////////////////////////////////////////////////////////////////
587
make_globalref(JNIEnv * env,const char classname[])588 static jclass make_globalref(JNIEnv* env, const char classname[])
589 {
590 jclass c = env->FindClass(classname);
591 SkASSERT(c);
592 return (jclass) env->NewGlobalRef(c);
593 }
594
getFieldIDCheck(JNIEnv * env,jclass clazz,const char fieldname[],const char type[])595 static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz,
596 const char fieldname[], const char type[])
597 {
598 jfieldID id = env->GetFieldID(clazz, fieldname, type);
599 SkASSERT(id);
600 return id;
601 }
602
register_android_graphics_Graphics(JNIEnv * env)603 int register_android_graphics_Graphics(JNIEnv* env)
604 {
605 jmethodID m;
606 jclass c;
607
608 gRect_class = make_globalref(env, "android/graphics/Rect");
609 gRect_leftFieldID = getFieldIDCheck(env, gRect_class, "left", "I");
610 gRect_topFieldID = getFieldIDCheck(env, gRect_class, "top", "I");
611 gRect_rightFieldID = getFieldIDCheck(env, gRect_class, "right", "I");
612 gRect_bottomFieldID = getFieldIDCheck(env, gRect_class, "bottom", "I");
613
614 gRectF_class = make_globalref(env, "android/graphics/RectF");
615 gRectF_leftFieldID = getFieldIDCheck(env, gRectF_class, "left", "F");
616 gRectF_topFieldID = getFieldIDCheck(env, gRectF_class, "top", "F");
617 gRectF_rightFieldID = getFieldIDCheck(env, gRectF_class, "right", "F");
618 gRectF_bottomFieldID = getFieldIDCheck(env, gRectF_class, "bottom", "F");
619
620 gPoint_class = make_globalref(env, "android/graphics/Point");
621 gPoint_xFieldID = getFieldIDCheck(env, gPoint_class, "x", "I");
622 gPoint_yFieldID = getFieldIDCheck(env, gPoint_class, "y", "I");
623
624 gPointF_class = make_globalref(env, "android/graphics/PointF");
625 gPointF_xFieldID = getFieldIDCheck(env, gPointF_class, "x", "F");
626 gPointF_yFieldID = getFieldIDCheck(env, gPointF_class, "y", "F");
627
628 gBitmap_class = make_globalref(env, "android/graphics/Bitmap");
629 gBitmap_nativeInstanceID = getFieldIDCheck(env, gBitmap_class, "mNativeBitmap", "J");
630 gBitmap_constructorMethodID = env->GetMethodID(gBitmap_class, "<init>", "(J[BIIIZZ[BLandroid/graphics/NinePatch$InsetStruct;)V");
631 gBitmap_reinitMethodID = env->GetMethodID(gBitmap_class, "reinit", "(IIZ)V");
632 gBitmap_getAllocationByteCountMethodID = env->GetMethodID(gBitmap_class, "getAllocationByteCount", "()I");
633 gBitmapRegionDecoder_class = make_globalref(env, "android/graphics/BitmapRegionDecoder");
634 gBitmapRegionDecoder_constructorMethodID = env->GetMethodID(gBitmapRegionDecoder_class, "<init>", "(J)V");
635
636 gBitmapConfig_class = make_globalref(env, "android/graphics/Bitmap$Config");
637 gBitmapConfig_nativeInstanceID = getFieldIDCheck(env, gBitmapConfig_class,
638 "nativeInt", "I");
639
640 gCanvas_class = make_globalref(env, "android/graphics/Canvas");
641 gCanvas_nativeInstanceID = getFieldIDCheck(env, gCanvas_class, "mNativeCanvasWrapper", "J");
642
643 gPaint_class = make_globalref(env, "android/graphics/Paint");
644 gPaint_nativeInstanceID = getFieldIDCheck(env, gPaint_class, "mNativePaint", "J");
645 gPaint_nativeTypefaceID = getFieldIDCheck(env, gPaint_class, "mNativeTypeface", "J");
646
647 gPicture_class = make_globalref(env, "android/graphics/Picture");
648 gPicture_nativeInstanceID = getFieldIDCheck(env, gPicture_class, "mNativePicture", "J");
649
650 gRegion_class = make_globalref(env, "android/graphics/Region");
651 gRegion_nativeInstanceID = getFieldIDCheck(env, gRegion_class, "mNativeRegion", "J");
652 gRegion_constructorMethodID = env->GetMethodID(gRegion_class, "<init>",
653 "(JI)V");
654
655 c = env->FindClass("java/lang/Byte");
656 gByte_class = (jclass) env->NewGlobalRef(
657 env->GetStaticObjectField(c, env->GetStaticFieldID(c, "TYPE", "Ljava/lang/Class;")));
658
659 gVMRuntime_class = make_globalref(env, "dalvik/system/VMRuntime");
660 m = env->GetStaticMethodID(gVMRuntime_class, "getRuntime", "()Ldalvik/system/VMRuntime;");
661 gVMRuntime = env->NewGlobalRef(env->CallStaticObjectMethod(gVMRuntime_class, m));
662 gVMRuntime_newNonMovableArray = env->GetMethodID(gVMRuntime_class, "newNonMovableArray",
663 "(Ljava/lang/Class;I)Ljava/lang/Object;");
664 gVMRuntime_addressOf = env->GetMethodID(gVMRuntime_class, "addressOf", "(Ljava/lang/Object;)J");
665
666 return 0;
667 }
668