1 #define LOG_TAG "GraphicsJNI"
2
3 #include <unistd.h>
4 #include <sys/mman.h>
5
6 #include "jni.h"
7 #include <nativehelper/JNIHelp.h>
8 #include "GraphicsJNI.h"
9 #include "core_jni_helpers.h"
10
11 #include "SkCanvas.h"
12 #include "SkMath.h"
13 #include "SkRegion.h"
14 #include <android_runtime/AndroidRuntime.h>
15 #include <cutils/ashmem.h>
16 #include <hwui/Canvas.h>
17
18 using namespace android;
19
doThrowNPE(JNIEnv * env)20 void doThrowNPE(JNIEnv* env) {
21 jniThrowNullPointerException(env, NULL);
22 }
23
doThrowAIOOBE(JNIEnv * env)24 void doThrowAIOOBE(JNIEnv* env) {
25 jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL);
26 }
27
doThrowRE(JNIEnv * env,const char * msg)28 void doThrowRE(JNIEnv* env, const char* msg) {
29 jniThrowRuntimeException(env, msg);
30 }
31
doThrowIAE(JNIEnv * env,const char * msg)32 void doThrowIAE(JNIEnv* env, const char* msg) {
33 jniThrowException(env, "java/lang/IllegalArgumentException", msg);
34 }
35
doThrowISE(JNIEnv * env,const char * msg)36 void doThrowISE(JNIEnv* env, const char* msg) {
37 jniThrowException(env, "java/lang/IllegalStateException", msg);
38 }
39
doThrowOOME(JNIEnv * env,const char * msg)40 void doThrowOOME(JNIEnv* env, const char* msg) {
41 jniThrowException(env, "java/lang/OutOfMemoryError", msg);
42 }
43
doThrowIOE(JNIEnv * env,const char * msg)44 void doThrowIOE(JNIEnv* env, const char* msg) {
45 jniThrowException(env, "java/io/IOException", msg);
46 }
47
hasException(JNIEnv * env)48 bool GraphicsJNI::hasException(JNIEnv *env) {
49 if (env->ExceptionCheck() != 0) {
50 ALOGE("*** Uncaught exception returned from Java call!\n");
51 env->ExceptionDescribe();
52 return true;
53 }
54 return false;
55 }
56
57 ///////////////////////////////////////////////////////////////////////////////
58
AutoJavaFloatArray(JNIEnv * env,jfloatArray array,int minLength,JNIAccess access)59 AutoJavaFloatArray::AutoJavaFloatArray(JNIEnv* env, jfloatArray array,
60 int minLength, JNIAccess access)
61 : fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
62 ALOG_ASSERT(env);
63 if (array) {
64 fLen = env->GetArrayLength(array);
65 if (fLen < minLength) {
66 LOG_ALWAYS_FATAL("bad length");
67 }
68 fPtr = env->GetFloatArrayElements(array, NULL);
69 }
70 fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0;
71 }
72
~AutoJavaFloatArray()73 AutoJavaFloatArray::~AutoJavaFloatArray() {
74 if (fPtr) {
75 fEnv->ReleaseFloatArrayElements(fArray, fPtr, fReleaseMode);
76 }
77 }
78
AutoJavaIntArray(JNIEnv * env,jintArray array,int minLength)79 AutoJavaIntArray::AutoJavaIntArray(JNIEnv* env, jintArray array,
80 int minLength)
81 : fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
82 ALOG_ASSERT(env);
83 if (array) {
84 fLen = env->GetArrayLength(array);
85 if (fLen < minLength) {
86 LOG_ALWAYS_FATAL("bad length");
87 }
88 fPtr = env->GetIntArrayElements(array, NULL);
89 }
90 }
91
~AutoJavaIntArray()92 AutoJavaIntArray::~AutoJavaIntArray() {
93 if (fPtr) {
94 fEnv->ReleaseIntArrayElements(fArray, fPtr, 0);
95 }
96 }
97
AutoJavaShortArray(JNIEnv * env,jshortArray array,int minLength,JNIAccess access)98 AutoJavaShortArray::AutoJavaShortArray(JNIEnv* env, jshortArray array,
99 int minLength, JNIAccess access)
100 : fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
101 ALOG_ASSERT(env);
102 if (array) {
103 fLen = env->GetArrayLength(array);
104 if (fLen < minLength) {
105 LOG_ALWAYS_FATAL("bad length");
106 }
107 fPtr = env->GetShortArrayElements(array, NULL);
108 }
109 fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0;
110 }
111
~AutoJavaShortArray()112 AutoJavaShortArray::~AutoJavaShortArray() {
113 if (fPtr) {
114 fEnv->ReleaseShortArrayElements(fArray, fPtr, fReleaseMode);
115 }
116 }
117
AutoJavaByteArray(JNIEnv * env,jbyteArray array,int minLength)118 AutoJavaByteArray::AutoJavaByteArray(JNIEnv* env, jbyteArray array,
119 int minLength)
120 : fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
121 ALOG_ASSERT(env);
122 if (array) {
123 fLen = env->GetArrayLength(array);
124 if (fLen < minLength) {
125 LOG_ALWAYS_FATAL("bad length");
126 }
127 fPtr = env->GetByteArrayElements(array, NULL);
128 }
129 }
130
~AutoJavaByteArray()131 AutoJavaByteArray::~AutoJavaByteArray() {
132 if (fPtr) {
133 fEnv->ReleaseByteArrayElements(fArray, fPtr, 0);
134 }
135 }
136
137 ///////////////////////////////////////////////////////////////////////////////
138
139 static jclass gRect_class;
140 static jfieldID gRect_leftFieldID;
141 static jfieldID gRect_topFieldID;
142 static jfieldID gRect_rightFieldID;
143 static jfieldID gRect_bottomFieldID;
144
145 static jclass gRectF_class;
146 static jfieldID gRectF_leftFieldID;
147 static jfieldID gRectF_topFieldID;
148 static jfieldID gRectF_rightFieldID;
149 static jfieldID gRectF_bottomFieldID;
150
151 static jclass gPoint_class;
152 static jfieldID gPoint_xFieldID;
153 static jfieldID gPoint_yFieldID;
154
155 static jclass gPointF_class;
156 static jfieldID gPointF_xFieldID;
157 static jfieldID gPointF_yFieldID;
158
159 static jclass gBitmapConfig_class;
160 static jfieldID gBitmapConfig_nativeInstanceID;
161
162 static jclass gBitmapRegionDecoder_class;
163 static jmethodID gBitmapRegionDecoder_constructorMethodID;
164
165 static jclass gCanvas_class;
166 static jfieldID gCanvas_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 static jclass gByte_class;
176 static jobject gVMRuntime;
177 static jclass gVMRuntime_class;
178 static jmethodID gVMRuntime_newNonMovableArray;
179 static jmethodID gVMRuntime_addressOf;
180
181 static jclass gColorSpace_class;
182 static jmethodID gColorSpace_getMethodID;
183 static jmethodID gColorSpace_matchMethodID;
184
185 static jclass gColorSpaceRGB_class;
186 static jmethodID gColorSpaceRGB_constructorMethodID;
187
188 static jclass gColorSpace_Named_class;
189 static jfieldID gColorSpace_Named_sRGBFieldID;
190 static jfieldID gColorSpace_Named_ExtendedSRGBFieldID;
191 static jfieldID gColorSpace_Named_LinearSRGBFieldID;
192 static jfieldID gColorSpace_Named_LinearExtendedSRGBFieldID;
193
194 static jclass gTransferParameters_class;
195 static jmethodID gTransferParameters_constructorMethodID;
196
197 ///////////////////////////////////////////////////////////////////////////////
198
get_jrect(JNIEnv * env,jobject obj,int * L,int * T,int * R,int * B)199 void GraphicsJNI::get_jrect(JNIEnv* env, jobject obj, int* L, int* T, int* R, int* B)
200 {
201 ALOG_ASSERT(env->IsInstanceOf(obj, gRect_class));
202
203 *L = env->GetIntField(obj, gRect_leftFieldID);
204 *T = env->GetIntField(obj, gRect_topFieldID);
205 *R = env->GetIntField(obj, gRect_rightFieldID);
206 *B = env->GetIntField(obj, gRect_bottomFieldID);
207 }
208
set_jrect(JNIEnv * env,jobject obj,int L,int T,int R,int B)209 void GraphicsJNI::set_jrect(JNIEnv* env, jobject obj, int L, int T, int R, int B)
210 {
211 ALOG_ASSERT(env->IsInstanceOf(obj, gRect_class));
212
213 env->SetIntField(obj, gRect_leftFieldID, L);
214 env->SetIntField(obj, gRect_topFieldID, T);
215 env->SetIntField(obj, gRect_rightFieldID, R);
216 env->SetIntField(obj, gRect_bottomFieldID, B);
217 }
218
jrect_to_irect(JNIEnv * env,jobject obj,SkIRect * ir)219 SkIRect* GraphicsJNI::jrect_to_irect(JNIEnv* env, jobject obj, SkIRect* ir)
220 {
221 ALOG_ASSERT(env->IsInstanceOf(obj, gRect_class));
222
223 ir->set(env->GetIntField(obj, gRect_leftFieldID),
224 env->GetIntField(obj, gRect_topFieldID),
225 env->GetIntField(obj, gRect_rightFieldID),
226 env->GetIntField(obj, gRect_bottomFieldID));
227 return ir;
228 }
229
irect_to_jrect(const SkIRect & ir,JNIEnv * env,jobject obj)230 void GraphicsJNI::irect_to_jrect(const SkIRect& ir, JNIEnv* env, jobject obj)
231 {
232 ALOG_ASSERT(env->IsInstanceOf(obj, gRect_class));
233
234 env->SetIntField(obj, gRect_leftFieldID, ir.fLeft);
235 env->SetIntField(obj, gRect_topFieldID, ir.fTop);
236 env->SetIntField(obj, gRect_rightFieldID, ir.fRight);
237 env->SetIntField(obj, gRect_bottomFieldID, ir.fBottom);
238 }
239
jrectf_to_rect(JNIEnv * env,jobject obj,SkRect * r)240 SkRect* GraphicsJNI::jrectf_to_rect(JNIEnv* env, jobject obj, SkRect* r)
241 {
242 ALOG_ASSERT(env->IsInstanceOf(obj, gRectF_class));
243
244 r->set(env->GetFloatField(obj, gRectF_leftFieldID),
245 env->GetFloatField(obj, gRectF_topFieldID),
246 env->GetFloatField(obj, gRectF_rightFieldID),
247 env->GetFloatField(obj, gRectF_bottomFieldID));
248 return r;
249 }
250
jrect_to_rect(JNIEnv * env,jobject obj,SkRect * r)251 SkRect* GraphicsJNI::jrect_to_rect(JNIEnv* env, jobject obj, SkRect* r)
252 {
253 ALOG_ASSERT(env->IsInstanceOf(obj, gRect_class));
254
255 r->set(SkIntToScalar(env->GetIntField(obj, gRect_leftFieldID)),
256 SkIntToScalar(env->GetIntField(obj, gRect_topFieldID)),
257 SkIntToScalar(env->GetIntField(obj, gRect_rightFieldID)),
258 SkIntToScalar(env->GetIntField(obj, gRect_bottomFieldID)));
259 return r;
260 }
261
rect_to_jrectf(const SkRect & r,JNIEnv * env,jobject obj)262 void GraphicsJNI::rect_to_jrectf(const SkRect& r, JNIEnv* env, jobject obj)
263 {
264 ALOG_ASSERT(env->IsInstanceOf(obj, gRectF_class));
265
266 env->SetFloatField(obj, gRectF_leftFieldID, SkScalarToFloat(r.fLeft));
267 env->SetFloatField(obj, gRectF_topFieldID, SkScalarToFloat(r.fTop));
268 env->SetFloatField(obj, gRectF_rightFieldID, SkScalarToFloat(r.fRight));
269 env->SetFloatField(obj, gRectF_bottomFieldID, SkScalarToFloat(r.fBottom));
270 }
271
jpoint_to_ipoint(JNIEnv * env,jobject obj,SkIPoint * point)272 SkIPoint* GraphicsJNI::jpoint_to_ipoint(JNIEnv* env, jobject obj, SkIPoint* point)
273 {
274 ALOG_ASSERT(env->IsInstanceOf(obj, gPoint_class));
275
276 point->set(env->GetIntField(obj, gPoint_xFieldID),
277 env->GetIntField(obj, gPoint_yFieldID));
278 return point;
279 }
280
ipoint_to_jpoint(const SkIPoint & ir,JNIEnv * env,jobject obj)281 void GraphicsJNI::ipoint_to_jpoint(const SkIPoint& ir, JNIEnv* env, jobject obj)
282 {
283 ALOG_ASSERT(env->IsInstanceOf(obj, gPoint_class));
284
285 env->SetIntField(obj, gPoint_xFieldID, ir.fX);
286 env->SetIntField(obj, gPoint_yFieldID, ir.fY);
287 }
288
jpointf_to_point(JNIEnv * env,jobject obj,SkPoint * point)289 SkPoint* GraphicsJNI::jpointf_to_point(JNIEnv* env, jobject obj, SkPoint* point)
290 {
291 ALOG_ASSERT(env->IsInstanceOf(obj, gPointF_class));
292
293 point->set(env->GetIntField(obj, gPointF_xFieldID),
294 env->GetIntField(obj, gPointF_yFieldID));
295 return point;
296 }
297
point_to_jpointf(const SkPoint & r,JNIEnv * env,jobject obj)298 void GraphicsJNI::point_to_jpointf(const SkPoint& r, JNIEnv* env, jobject obj)
299 {
300 ALOG_ASSERT(env->IsInstanceOf(obj, gPointF_class));
301
302 env->SetFloatField(obj, gPointF_xFieldID, SkScalarToFloat(r.fX));
303 env->SetFloatField(obj, gPointF_yFieldID, SkScalarToFloat(r.fY));
304 }
305
306 // See enum values in GraphicsJNI.h
colorTypeToLegacyBitmapConfig(SkColorType colorType)307 jint GraphicsJNI::colorTypeToLegacyBitmapConfig(SkColorType colorType) {
308 switch (colorType) {
309 case kRGBA_F16_SkColorType:
310 return kRGBA_16F_LegacyBitmapConfig;
311 case kN32_SkColorType:
312 return kARGB_8888_LegacyBitmapConfig;
313 case kARGB_4444_SkColorType:
314 return kARGB_4444_LegacyBitmapConfig;
315 case kRGB_565_SkColorType:
316 return kRGB_565_LegacyBitmapConfig;
317 case kAlpha_8_SkColorType:
318 return kA8_LegacyBitmapConfig;
319 case kUnknown_SkColorType:
320 default:
321 break;
322 }
323 return kNo_LegacyBitmapConfig;
324 }
325
legacyBitmapConfigToColorType(jint legacyConfig)326 SkColorType GraphicsJNI::legacyBitmapConfigToColorType(jint legacyConfig) {
327 const uint8_t gConfig2ColorType[] = {
328 kUnknown_SkColorType,
329 kAlpha_8_SkColorType,
330 kUnknown_SkColorType, // Previously kIndex_8_SkColorType,
331 kRGB_565_SkColorType,
332 kARGB_4444_SkColorType,
333 kN32_SkColorType,
334 kRGBA_F16_SkColorType,
335 kN32_SkColorType
336 };
337
338 if (legacyConfig < 0 || legacyConfig > kLastEnum_LegacyBitmapConfig) {
339 legacyConfig = kNo_LegacyBitmapConfig;
340 }
341 return static_cast<SkColorType>(gConfig2ColorType[legacyConfig]);
342 }
343
getSkBitmap(JNIEnv * env,jobject bitmap,SkBitmap * outBitmap)344 void GraphicsJNI::getSkBitmap(JNIEnv* env, jobject bitmap, SkBitmap* outBitmap) {
345 bitmap::toBitmap(env, bitmap).getSkBitmap(outBitmap);
346 }
347
getNativeBitmapColorType(JNIEnv * env,jobject jconfig)348 SkColorType GraphicsJNI::getNativeBitmapColorType(JNIEnv* env, jobject jconfig) {
349 ALOG_ASSERT(env);
350 if (NULL == jconfig) {
351 return kUnknown_SkColorType;
352 }
353 ALOG_ASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class));
354 int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID);
355 return legacyBitmapConfigToColorType(c);
356 }
357
isHardwareConfig(JNIEnv * env,jobject jconfig)358 bool GraphicsJNI::isHardwareConfig(JNIEnv* env, jobject jconfig) {
359 ALOG_ASSERT(env);
360 if (NULL == jconfig) {
361 return false;
362 }
363 int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID);
364 return c == kHardware_LegacyBitmapConfig;
365 }
366
hardwareLegacyBitmapConfig()367 jint GraphicsJNI::hardwareLegacyBitmapConfig() {
368 return kHardware_LegacyBitmapConfig;
369 }
370
getNativeCanvas(JNIEnv * env,jobject canvas)371 android::Canvas* GraphicsJNI::getNativeCanvas(JNIEnv* env, jobject canvas) {
372 ALOG_ASSERT(env);
373 ALOG_ASSERT(canvas);
374 ALOG_ASSERT(env->IsInstanceOf(canvas, gCanvas_class));
375 jlong canvasHandle = env->GetLongField(canvas, gCanvas_nativeInstanceID);
376 if (!canvasHandle) {
377 return NULL;
378 }
379 return reinterpret_cast<android::Canvas*>(canvasHandle);
380 }
381
getNativeRegion(JNIEnv * env,jobject region)382 SkRegion* GraphicsJNI::getNativeRegion(JNIEnv* env, jobject region)
383 {
384 ALOG_ASSERT(env);
385 ALOG_ASSERT(region);
386 ALOG_ASSERT(env->IsInstanceOf(region, gRegion_class));
387 jlong regionHandle = env->GetLongField(region, gRegion_nativeInstanceID);
388 SkRegion* r = reinterpret_cast<SkRegion*>(regionHandle);
389 ALOG_ASSERT(r);
390 return r;
391 }
392
393 ///////////////////////////////////////////////////////////////////////////////////////////
394
createBitmapRegionDecoder(JNIEnv * env,SkBitmapRegionDecoder * bitmap)395 jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap)
396 {
397 ALOG_ASSERT(bitmap != NULL);
398
399 jobject obj = env->NewObject(gBitmapRegionDecoder_class,
400 gBitmapRegionDecoder_constructorMethodID,
401 reinterpret_cast<jlong>(bitmap));
402 hasException(env); // For the side effect of logging.
403 return obj;
404 }
405
createRegion(JNIEnv * env,SkRegion * region)406 jobject GraphicsJNI::createRegion(JNIEnv* env, SkRegion* region)
407 {
408 ALOG_ASSERT(region != NULL);
409 jobject obj = env->NewObject(gRegion_class, gRegion_constructorMethodID,
410 reinterpret_cast<jlong>(region), 0);
411 hasException(env); // For the side effect of logging.
412 return obj;
413 }
414
415 ///////////////////////////////////////////////////////////////////////////////
416
getColorSpace(JNIEnv * env,SkColorSpace * decodeColorSpace,SkColorType decodeColorType)417 jobject GraphicsJNI::getColorSpace(JNIEnv* env, SkColorSpace* decodeColorSpace,
418 SkColorType decodeColorType) {
419 if (!decodeColorSpace || decodeColorType == kAlpha_8_SkColorType) {
420 return nullptr;
421 }
422
423 // Special checks for the common sRGB cases and their extended variants.
424 jobject namedCS = nullptr;
425 sk_sp<SkColorSpace> srgbLinear = SkColorSpace::MakeSRGBLinear();
426 if (decodeColorType == kRGBA_F16_SkColorType) {
427 // An F16 Bitmap will always report that it is EXTENDED if
428 // it matches a ColorSpace that has an EXTENDED variant.
429 if (decodeColorSpace->isSRGB()) {
430 namedCS = env->GetStaticObjectField(gColorSpace_Named_class,
431 gColorSpace_Named_ExtendedSRGBFieldID);
432 } else if (decodeColorSpace == srgbLinear.get()) {
433 namedCS = env->GetStaticObjectField(gColorSpace_Named_class,
434 gColorSpace_Named_LinearExtendedSRGBFieldID);
435 }
436 } else if (decodeColorSpace->isSRGB()) {
437 namedCS = env->GetStaticObjectField(gColorSpace_Named_class,
438 gColorSpace_Named_sRGBFieldID);
439 } else if (decodeColorSpace == srgbLinear.get()) {
440 namedCS = env->GetStaticObjectField(gColorSpace_Named_class,
441 gColorSpace_Named_LinearSRGBFieldID);
442 }
443
444 if (namedCS) {
445 return env->CallStaticObjectMethod(gColorSpace_class, gColorSpace_getMethodID, namedCS);
446 }
447
448 // Try to match against known RGB color spaces using the CIE XYZ D50
449 // conversion matrix and numerical transfer function parameters
450 skcms_Matrix3x3 xyzMatrix;
451 LOG_ALWAYS_FATAL_IF(!decodeColorSpace->toXYZD50(&xyzMatrix));
452
453 skcms_TransferFunction transferParams;
454 // We can only handle numerical transfer functions at the moment
455 LOG_ALWAYS_FATAL_IF(!decodeColorSpace->isNumericalTransferFn(&transferParams));
456
457 jobject params = env->NewObject(gTransferParameters_class,
458 gTransferParameters_constructorMethodID,
459 transferParams.a, transferParams.b, transferParams.c,
460 transferParams.d, transferParams.e, transferParams.f,
461 transferParams.g);
462
463 jfloatArray xyzArray = env->NewFloatArray(9);
464 jfloat xyz[9] = {
465 xyzMatrix.vals[0][0],
466 xyzMatrix.vals[1][0],
467 xyzMatrix.vals[2][0],
468 xyzMatrix.vals[0][1],
469 xyzMatrix.vals[1][1],
470 xyzMatrix.vals[2][1],
471 xyzMatrix.vals[0][2],
472 xyzMatrix.vals[1][2],
473 xyzMatrix.vals[2][2]
474 };
475 env->SetFloatArrayRegion(xyzArray, 0, 9, xyz);
476
477 jobject colorSpace = env->CallStaticObjectMethod(gColorSpace_class,
478 gColorSpace_matchMethodID, xyzArray, params);
479
480 if (colorSpace == nullptr) {
481 // We couldn't find an exact match, let's create a new color space
482 // instance with the 3x3 conversion matrix and transfer function
483 colorSpace = env->NewObject(gColorSpaceRGB_class,
484 gColorSpaceRGB_constructorMethodID,
485 env->NewStringUTF("Unknown"), xyzArray, params);
486 }
487
488 env->DeleteLocalRef(xyzArray);
489 return colorSpace;
490 }
491
492 ///////////////////////////////////////////////////////////////////////////////
allocPixelRef(SkBitmap * bitmap)493 bool HeapAllocator::allocPixelRef(SkBitmap* bitmap) {
494 mStorage = android::Bitmap::allocateHeapBitmap(bitmap);
495 return !!mStorage;
496 }
497
498 ////////////////////////////////////////////////////////////////////////////////
499
RecyclingClippingPixelAllocator(android::Bitmap * recycledBitmap,size_t recycledBytes)500 RecyclingClippingPixelAllocator::RecyclingClippingPixelAllocator(
501 android::Bitmap* recycledBitmap, size_t recycledBytes)
502 : mRecycledBitmap(recycledBitmap)
503 , mRecycledBytes(recycledBytes)
504 , mSkiaBitmap(nullptr)
505 , mNeedsCopy(false)
506 {}
507
~RecyclingClippingPixelAllocator()508 RecyclingClippingPixelAllocator::~RecyclingClippingPixelAllocator() {}
509
allocPixelRef(SkBitmap * bitmap)510 bool RecyclingClippingPixelAllocator::allocPixelRef(SkBitmap* bitmap) {
511 // Ensure that the caller did not pass in a NULL bitmap to the constructor or this
512 // function.
513 LOG_ALWAYS_FATAL_IF(!mRecycledBitmap);
514 LOG_ALWAYS_FATAL_IF(!bitmap);
515 mSkiaBitmap = bitmap;
516
517 // This behaves differently than the RecyclingPixelAllocator. For backwards
518 // compatibility, the original color type of the recycled bitmap must be maintained.
519 if (mRecycledBitmap->info().colorType() != bitmap->colorType()) {
520 return false;
521 }
522
523 // The Skia bitmap specifies the width and height needed by the decoder.
524 // mRecycledBitmap specifies the width and height of the bitmap that we
525 // want to reuse. Neither can be changed. We will try to find a way
526 // to reuse the memory.
527 const int maxWidth = SkTMax(bitmap->width(), mRecycledBitmap->info().width());
528 const int maxHeight = SkTMax(bitmap->height(), mRecycledBitmap->info().height());
529 const SkImageInfo maxInfo = bitmap->info().makeWH(maxWidth, maxHeight);
530 const size_t rowBytes = maxInfo.minRowBytes();
531 const size_t bytesNeeded = maxInfo.computeByteSize(rowBytes);
532 if (bytesNeeded <= mRecycledBytes) {
533 // Here we take advantage of reconfigure() to reset the rowBytes
534 // of mRecycledBitmap. It is very important that we pass in
535 // mRecycledBitmap->info() for the SkImageInfo. According to the
536 // specification for BitmapRegionDecoder, we are not allowed to change
537 // the SkImageInfo.
538 // We can (must) preserve the color space since it doesn't affect the
539 // storage needs
540 mRecycledBitmap->reconfigure(
541 mRecycledBitmap->info().makeColorSpace(bitmap->refColorSpace()),
542 rowBytes);
543
544 // Give the bitmap the same pixelRef as mRecycledBitmap.
545 // skbug.com/4538: We also need to make sure that the rowBytes on the pixel ref
546 // match the rowBytes on the bitmap.
547 bitmap->setInfo(bitmap->info(), rowBytes);
548 bitmap->setPixelRef(sk_ref_sp(mRecycledBitmap), 0, 0);
549
550 // Make sure that the recycled bitmap has the correct alpha type.
551 mRecycledBitmap->setAlphaType(bitmap->alphaType());
552
553 bitmap->notifyPixelsChanged();
554 mNeedsCopy = false;
555
556 // TODO: If the dimensions of the SkBitmap are smaller than those of
557 // mRecycledBitmap, should we zero the memory in mRecycledBitmap?
558 return true;
559 }
560
561 // In the event that mRecycledBitmap is not large enough, allocate new memory
562 // on the heap.
563 SkBitmap::HeapAllocator heapAllocator;
564
565 // We will need to copy from heap memory to mRecycledBitmap's memory after the
566 // decode is complete.
567 mNeedsCopy = true;
568
569 return heapAllocator.allocPixelRef(bitmap);
570 }
571
copyIfNecessary()572 void RecyclingClippingPixelAllocator::copyIfNecessary() {
573 if (mNeedsCopy) {
574 mRecycledBitmap->ref();
575 SkPixelRef* recycledPixels = mRecycledBitmap;
576 void* dst = recycledPixels->pixels();
577 const size_t dstRowBytes = mRecycledBitmap->rowBytes();
578 const size_t bytesToCopy = std::min(mRecycledBitmap->info().minRowBytes(),
579 mSkiaBitmap->info().minRowBytes());
580 const int rowsToCopy = std::min(mRecycledBitmap->info().height(),
581 mSkiaBitmap->info().height());
582 for (int y = 0; y < rowsToCopy; y++) {
583 memcpy(dst, mSkiaBitmap->getAddr(0, y), bytesToCopy);
584 dst = SkTAddOffset<void>(dst, dstRowBytes);
585 }
586 recycledPixels->notifyPixelsChanged();
587 recycledPixels->unref();
588 }
589 mRecycledBitmap = nullptr;
590 mSkiaBitmap = nullptr;
591 }
592
593 ////////////////////////////////////////////////////////////////////////////////
594
AshmemPixelAllocator(JNIEnv * env)595 AshmemPixelAllocator::AshmemPixelAllocator(JNIEnv *env) {
596 LOG_ALWAYS_FATAL_IF(env->GetJavaVM(&mJavaVM) != JNI_OK,
597 "env->GetJavaVM failed");
598 }
599
allocPixelRef(SkBitmap * bitmap)600 bool AshmemPixelAllocator::allocPixelRef(SkBitmap* bitmap) {
601 mStorage = android::Bitmap::allocateAshmemBitmap(bitmap);
602 return !!mStorage;
603 }
604
605 ////////////////////////////////////////////////////////////////////////////////
606
register_android_graphics_Graphics(JNIEnv * env)607 int register_android_graphics_Graphics(JNIEnv* env)
608 {
609 jmethodID m;
610 jclass c;
611
612 gRect_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Rect"));
613 gRect_leftFieldID = GetFieldIDOrDie(env, gRect_class, "left", "I");
614 gRect_topFieldID = GetFieldIDOrDie(env, gRect_class, "top", "I");
615 gRect_rightFieldID = GetFieldIDOrDie(env, gRect_class, "right", "I");
616 gRect_bottomFieldID = GetFieldIDOrDie(env, gRect_class, "bottom", "I");
617
618 gRectF_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/RectF"));
619 gRectF_leftFieldID = GetFieldIDOrDie(env, gRectF_class, "left", "F");
620 gRectF_topFieldID = GetFieldIDOrDie(env, gRectF_class, "top", "F");
621 gRectF_rightFieldID = GetFieldIDOrDie(env, gRectF_class, "right", "F");
622 gRectF_bottomFieldID = GetFieldIDOrDie(env, gRectF_class, "bottom", "F");
623
624 gPoint_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Point"));
625 gPoint_xFieldID = GetFieldIDOrDie(env, gPoint_class, "x", "I");
626 gPoint_yFieldID = GetFieldIDOrDie(env, gPoint_class, "y", "I");
627
628 gPointF_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/PointF"));
629 gPointF_xFieldID = GetFieldIDOrDie(env, gPointF_class, "x", "F");
630 gPointF_yFieldID = GetFieldIDOrDie(env, gPointF_class, "y", "F");
631
632 gBitmapRegionDecoder_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/BitmapRegionDecoder"));
633 gBitmapRegionDecoder_constructorMethodID = GetMethodIDOrDie(env, gBitmapRegionDecoder_class, "<init>", "(J)V");
634
635 gBitmapConfig_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Bitmap$Config"));
636 gBitmapConfig_nativeInstanceID = GetFieldIDOrDie(env, gBitmapConfig_class, "nativeInt", "I");
637
638 gCanvas_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Canvas"));
639 gCanvas_nativeInstanceID = GetFieldIDOrDie(env, gCanvas_class, "mNativeCanvasWrapper", "J");
640
641 gPicture_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Picture"));
642 gPicture_nativeInstanceID = GetFieldIDOrDie(env, gPicture_class, "mNativePicture", "J");
643
644 gRegion_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Region"));
645 gRegion_nativeInstanceID = GetFieldIDOrDie(env, gRegion_class, "mNativeRegion", "J");
646 gRegion_constructorMethodID = GetMethodIDOrDie(env, gRegion_class, "<init>", "(JI)V");
647
648 c = env->FindClass("java/lang/Byte");
649 gByte_class = (jclass) env->NewGlobalRef(
650 env->GetStaticObjectField(c, env->GetStaticFieldID(c, "TYPE", "Ljava/lang/Class;")));
651
652 gVMRuntime_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "dalvik/system/VMRuntime"));
653 m = env->GetStaticMethodID(gVMRuntime_class, "getRuntime", "()Ldalvik/system/VMRuntime;");
654 gVMRuntime = env->NewGlobalRef(env->CallStaticObjectMethod(gVMRuntime_class, m));
655 gVMRuntime_newNonMovableArray = GetMethodIDOrDie(env, gVMRuntime_class, "newNonMovableArray",
656 "(Ljava/lang/Class;I)Ljava/lang/Object;");
657 gVMRuntime_addressOf = GetMethodIDOrDie(env, gVMRuntime_class, "addressOf", "(Ljava/lang/Object;)J");
658
659 gColorSpace_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/ColorSpace"));
660 gColorSpace_getMethodID = GetStaticMethodIDOrDie(env, gColorSpace_class,
661 "get", "(Landroid/graphics/ColorSpace$Named;)Landroid/graphics/ColorSpace;");
662 gColorSpace_matchMethodID = GetStaticMethodIDOrDie(env, gColorSpace_class, "match",
663 "([FLandroid/graphics/ColorSpace$Rgb$TransferParameters;)Landroid/graphics/ColorSpace;");
664
665 gColorSpaceRGB_class = MakeGlobalRefOrDie(env,
666 FindClassOrDie(env, "android/graphics/ColorSpace$Rgb"));
667 gColorSpaceRGB_constructorMethodID = GetMethodIDOrDie(env, gColorSpaceRGB_class,
668 "<init>", "(Ljava/lang/String;[FLandroid/graphics/ColorSpace$Rgb$TransferParameters;)V");
669
670 gColorSpace_Named_class = MakeGlobalRefOrDie(env,
671 FindClassOrDie(env, "android/graphics/ColorSpace$Named"));
672 gColorSpace_Named_sRGBFieldID = GetStaticFieldIDOrDie(env,
673 gColorSpace_Named_class, "SRGB", "Landroid/graphics/ColorSpace$Named;");
674 gColorSpace_Named_ExtendedSRGBFieldID = GetStaticFieldIDOrDie(env,
675 gColorSpace_Named_class, "EXTENDED_SRGB", "Landroid/graphics/ColorSpace$Named;");
676 gColorSpace_Named_LinearSRGBFieldID = GetStaticFieldIDOrDie(env,
677 gColorSpace_Named_class, "LINEAR_SRGB", "Landroid/graphics/ColorSpace$Named;");
678 gColorSpace_Named_LinearExtendedSRGBFieldID = GetStaticFieldIDOrDie(env,
679 gColorSpace_Named_class, "LINEAR_EXTENDED_SRGB", "Landroid/graphics/ColorSpace$Named;");
680
681 gTransferParameters_class = MakeGlobalRefOrDie(env, FindClassOrDie(env,
682 "android/graphics/ColorSpace$Rgb$TransferParameters"));
683 gTransferParameters_constructorMethodID = GetMethodIDOrDie(env, gTransferParameters_class,
684 "<init>", "(DDDDDDD)V");
685
686 return 0;
687 }
688