Graphics.cpp revision 55455181233cadcd6d2e28d28d0dfc9a653f7787 
1#define LOG_TAG "GraphicsJNI"
2
3#include <unistd.h>
4#include <sys/mman.h>
5
6#include "jni.h"
7#include "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#include <Caches.h>
19#include <TextureCache.h>
20
21using namespace android;
22
23void doThrowNPE(JNIEnv* env) {
24    jniThrowNullPointerException(env, NULL);
25}
26
27void doThrowAIOOBE(JNIEnv* env) {
28    jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL);
29}
30
31void doThrowRE(JNIEnv* env, const char* msg) {
32    jniThrowRuntimeException(env, msg);
33}
34
35void doThrowIAE(JNIEnv* env, const char* msg) {
36    jniThrowException(env, "java/lang/IllegalArgumentException", msg);
37}
38
39void doThrowISE(JNIEnv* env, const char* msg) {
40    jniThrowException(env, "java/lang/IllegalStateException", msg);
41}
42
43void doThrowOOME(JNIEnv* env, const char* msg) {
44    jniThrowException(env, "java/lang/OutOfMemoryError", msg);
45}
46
47void doThrowIOE(JNIEnv* env, const char* msg) {
48    jniThrowException(env, "java/io/IOException", msg);
49}
50
51bool GraphicsJNI::hasException(JNIEnv *env) {
52    if (env->ExceptionCheck() != 0) {
53        ALOGE("*** Uncaught exception returned from Java call!\n");
54        env->ExceptionDescribe();
55        return true;
56    }
57    return false;
58}
59
60///////////////////////////////////////////////////////////////////////////////
61
62AutoJavaFloatArray::AutoJavaFloatArray(JNIEnv* env, jfloatArray array,
63                                       int minLength, JNIAccess access)
64: fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
65    SkASSERT(env);
66    if (array) {
67        fLen = env->GetArrayLength(array);
68        if (fLen < minLength) {
69            sk_throw();
70        }
71        fPtr = env->GetFloatArrayElements(array, NULL);
72    }
73    fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0;
74}
75
76AutoJavaFloatArray::~AutoJavaFloatArray() {
77    if (fPtr) {
78        fEnv->ReleaseFloatArrayElements(fArray, fPtr, fReleaseMode);
79    }
80}
81
82AutoJavaIntArray::AutoJavaIntArray(JNIEnv* env, jintArray array,
83                                       int minLength)
84: fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
85    SkASSERT(env);
86    if (array) {
87        fLen = env->GetArrayLength(array);
88        if (fLen < minLength) {
89            sk_throw();
90        }
91        fPtr = env->GetIntArrayElements(array, NULL);
92    }
93}
94
95AutoJavaIntArray::~AutoJavaIntArray() {
96    if (fPtr) {
97        fEnv->ReleaseIntArrayElements(fArray, fPtr, 0);
98    }
99}
100
101AutoJavaShortArray::AutoJavaShortArray(JNIEnv* env, jshortArray array,
102                                       int minLength, JNIAccess access)
103: fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
104    SkASSERT(env);
105    if (array) {
106        fLen = env->GetArrayLength(array);
107        if (fLen < minLength) {
108            sk_throw();
109        }
110        fPtr = env->GetShortArrayElements(array, NULL);
111    }
112    fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0;
113}
114
115AutoJavaShortArray::~AutoJavaShortArray() {
116    if (fPtr) {
117        fEnv->ReleaseShortArrayElements(fArray, fPtr, fReleaseMode);
118    }
119}
120
121AutoJavaByteArray::AutoJavaByteArray(JNIEnv* env, jbyteArray array,
122                                       int minLength)
123: fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
124    SkASSERT(env);
125    if (array) {
126        fLen = env->GetArrayLength(array);
127        if (fLen < minLength) {
128            sk_throw();
129        }
130        fPtr = env->GetByteArrayElements(array, NULL);
131    }
132}
133
134AutoJavaByteArray::~AutoJavaByteArray() {
135    if (fPtr) {
136        fEnv->ReleaseByteArrayElements(fArray, fPtr, 0);
137    }
138}
139
140///////////////////////////////////////////////////////////////////////////////
141
142static jclass   gRect_class;
143static jfieldID gRect_leftFieldID;
144static jfieldID gRect_topFieldID;
145static jfieldID gRect_rightFieldID;
146static jfieldID gRect_bottomFieldID;
147
148static jclass   gRectF_class;
149static jfieldID gRectF_leftFieldID;
150static jfieldID gRectF_topFieldID;
151static jfieldID gRectF_rightFieldID;
152static jfieldID gRectF_bottomFieldID;
153
154static jclass   gPoint_class;
155static jfieldID gPoint_xFieldID;
156static jfieldID gPoint_yFieldID;
157
158static jclass   gPointF_class;
159static jfieldID gPointF_xFieldID;
160static jfieldID gPointF_yFieldID;
161
162static jclass   gBitmapConfig_class;
163static jfieldID gBitmapConfig_nativeInstanceID;
164
165static jclass   gBitmapRegionDecoder_class;
166static jmethodID gBitmapRegionDecoder_constructorMethodID;
167
168static jclass   gCanvas_class;
169static jfieldID gCanvas_nativeInstanceID;
170
171static jclass   gPicture_class;
172static jfieldID gPicture_nativeInstanceID;
173
174static jclass   gRegion_class;
175static jfieldID gRegion_nativeInstanceID;
176static jmethodID gRegion_constructorMethodID;
177
178static jclass    gByte_class;
179static jobject   gVMRuntime;
180static jclass    gVMRuntime_class;
181static jmethodID gVMRuntime_newNonMovableArray;
182static jmethodID gVMRuntime_addressOf;
183
184static jfieldID gTransferParams_aFieldID;
185static jfieldID gTransferParams_bFieldID;
186static jfieldID gTransferParams_cFieldID;
187static jfieldID gTransferParams_dFieldID;
188static jfieldID gTransferParams_eFieldID;
189static jfieldID gTransferParams_fFieldID;
190static jfieldID gTransferParams_gFieldID;
191
192static jclass gColorSpace_class;
193static jfieldID gColorSpace_IlluminantD50FieldID;
194static jmethodID gColorSpace_adaptMethodID;
195static jmethodID gColorSpace_getMethodID;
196static jmethodID gColorSpace_matchMethodID;
197
198static jclass gColorSpaceRGB_class;
199static jmethodID gColorSpaceRGB_getTransferParametersMethodID;
200static jmethodID gColorSpaceRGB_getTransformMethodID;
201static jmethodID gColorSpaceRGB_constructorMethodID;
202
203static jclass gColorSpace_Named_class;
204static jfieldID gColorSpace_Named_sRGBFieldID;
205static jfieldID gColorSpace_Named_LinearExtendedSRGBFieldID;
206
207static jclass gTransferParameters_class;
208static jmethodID gTransferParameters_constructorMethodID;
209
210///////////////////////////////////////////////////////////////////////////////
211
212void GraphicsJNI::get_jrect(JNIEnv* env, jobject obj, int* L, int* T, int* R, int* B)
213{
214    SkASSERT(env->IsInstanceOf(obj, gRect_class));
215
216    *L = env->GetIntField(obj, gRect_leftFieldID);
217    *T = env->GetIntField(obj, gRect_topFieldID);
218    *R = env->GetIntField(obj, gRect_rightFieldID);
219    *B = env->GetIntField(obj, gRect_bottomFieldID);
220}
221
222void GraphicsJNI::set_jrect(JNIEnv* env, jobject obj, int L, int T, int R, int B)
223{
224    SkASSERT(env->IsInstanceOf(obj, gRect_class));
225
226    env->SetIntField(obj, gRect_leftFieldID, L);
227    env->SetIntField(obj, gRect_topFieldID, T);
228    env->SetIntField(obj, gRect_rightFieldID, R);
229    env->SetIntField(obj, gRect_bottomFieldID, B);
230}
231
232SkIRect* GraphicsJNI::jrect_to_irect(JNIEnv* env, jobject obj, SkIRect* ir)
233{
234    SkASSERT(env->IsInstanceOf(obj, gRect_class));
235
236    ir->set(env->GetIntField(obj, gRect_leftFieldID),
237            env->GetIntField(obj, gRect_topFieldID),
238            env->GetIntField(obj, gRect_rightFieldID),
239            env->GetIntField(obj, gRect_bottomFieldID));
240    return ir;
241}
242
243void GraphicsJNI::irect_to_jrect(const SkIRect& ir, JNIEnv* env, jobject obj)
244{
245    SkASSERT(env->IsInstanceOf(obj, gRect_class));
246
247    env->SetIntField(obj, gRect_leftFieldID, ir.fLeft);
248    env->SetIntField(obj, gRect_topFieldID, ir.fTop);
249    env->SetIntField(obj, gRect_rightFieldID, ir.fRight);
250    env->SetIntField(obj, gRect_bottomFieldID, ir.fBottom);
251}
252
253SkRect* GraphicsJNI::jrectf_to_rect(JNIEnv* env, jobject obj, SkRect* r)
254{
255    SkASSERT(env->IsInstanceOf(obj, gRectF_class));
256
257    r->set(env->GetFloatField(obj, gRectF_leftFieldID),
258           env->GetFloatField(obj, gRectF_topFieldID),
259           env->GetFloatField(obj, gRectF_rightFieldID),
260           env->GetFloatField(obj, gRectF_bottomFieldID));
261    return r;
262}
263
264SkRect* GraphicsJNI::jrect_to_rect(JNIEnv* env, jobject obj, SkRect* r)
265{
266    SkASSERT(env->IsInstanceOf(obj, gRect_class));
267
268    r->set(SkIntToScalar(env->GetIntField(obj, gRect_leftFieldID)),
269           SkIntToScalar(env->GetIntField(obj, gRect_topFieldID)),
270           SkIntToScalar(env->GetIntField(obj, gRect_rightFieldID)),
271           SkIntToScalar(env->GetIntField(obj, gRect_bottomFieldID)));
272    return r;
273}
274
275void GraphicsJNI::rect_to_jrectf(const SkRect& r, JNIEnv* env, jobject obj)
276{
277    SkASSERT(env->IsInstanceOf(obj, gRectF_class));
278
279    env->SetFloatField(obj, gRectF_leftFieldID, SkScalarToFloat(r.fLeft));
280    env->SetFloatField(obj, gRectF_topFieldID, SkScalarToFloat(r.fTop));
281    env->SetFloatField(obj, gRectF_rightFieldID, SkScalarToFloat(r.fRight));
282    env->SetFloatField(obj, gRectF_bottomFieldID, SkScalarToFloat(r.fBottom));
283}
284
285SkIPoint* GraphicsJNI::jpoint_to_ipoint(JNIEnv* env, jobject obj, SkIPoint* point)
286{
287    SkASSERT(env->IsInstanceOf(obj, gPoint_class));
288
289    point->set(env->GetIntField(obj, gPoint_xFieldID),
290               env->GetIntField(obj, gPoint_yFieldID));
291    return point;
292}
293
294void GraphicsJNI::ipoint_to_jpoint(const SkIPoint& ir, JNIEnv* env, jobject obj)
295{
296    SkASSERT(env->IsInstanceOf(obj, gPoint_class));
297
298    env->SetIntField(obj, gPoint_xFieldID, ir.fX);
299    env->SetIntField(obj, gPoint_yFieldID, ir.fY);
300}
301
302SkPoint* GraphicsJNI::jpointf_to_point(JNIEnv* env, jobject obj, SkPoint* point)
303{
304    SkASSERT(env->IsInstanceOf(obj, gPointF_class));
305
306    point->set(env->GetIntField(obj, gPointF_xFieldID),
307               env->GetIntField(obj, gPointF_yFieldID));
308    return point;
309}
310
311void GraphicsJNI::point_to_jpointf(const SkPoint& r, JNIEnv* env, jobject obj)
312{
313    SkASSERT(env->IsInstanceOf(obj, gPointF_class));
314
315    env->SetFloatField(obj, gPointF_xFieldID, SkScalarToFloat(r.fX));
316    env->SetFloatField(obj, gPointF_yFieldID, SkScalarToFloat(r.fY));
317}
318
319// See enum values in GraphicsJNI.h
320jint GraphicsJNI::colorTypeToLegacyBitmapConfig(SkColorType colorType) {
321    switch (colorType) {
322        case kRGBA_F16_SkColorType:
323            return kRGBA_16F_LegacyBitmapConfig;
324        case kN32_SkColorType:
325            return kARGB_8888_LegacyBitmapConfig;
326        case kARGB_4444_SkColorType:
327            return kARGB_4444_LegacyBitmapConfig;
328        case kRGB_565_SkColorType:
329            return kRGB_565_LegacyBitmapConfig;
330        case kIndex_8_SkColorType:
331            return kIndex8_LegacyBitmapConfig;
332        case kAlpha_8_SkColorType:
333            return kA8_LegacyBitmapConfig;
334        case kUnknown_SkColorType:
335        default:
336            break;
337    }
338    return kNo_LegacyBitmapConfig;
339}
340
341SkColorType GraphicsJNI::legacyBitmapConfigToColorType(jint legacyConfig) {
342    const uint8_t gConfig2ColorType[] = {
343        kUnknown_SkColorType,
344        kAlpha_8_SkColorType,
345        kIndex_8_SkColorType,
346        kRGB_565_SkColorType,
347        kARGB_4444_SkColorType,
348        kN32_SkColorType,
349        kRGBA_F16_SkColorType,
350        kN32_SkColorType
351    };
352
353    if (legacyConfig < 0 || legacyConfig > kLastEnum_LegacyBitmapConfig) {
354        legacyConfig = kNo_LegacyBitmapConfig;
355    }
356    return static_cast<SkColorType>(gConfig2ColorType[legacyConfig]);
357}
358
359void GraphicsJNI::getSkBitmap(JNIEnv* env, jobject bitmap, SkBitmap* outBitmap) {
360    bitmap::toBitmap(env, bitmap).getSkBitmap(outBitmap);
361}
362
363SkPixelRef* GraphicsJNI::refSkPixelRef(JNIEnv* env, jobject jbitmap) {
364    android::Bitmap& bitmap = android::bitmap::toBitmap(env, jbitmap);
365    bitmap.ref();
366    return &bitmap;
367}
368SkColorType GraphicsJNI::getNativeBitmapColorType(JNIEnv* env, jobject jconfig) {
369    SkASSERT(env);
370    if (NULL == jconfig) {
371        return kUnknown_SkColorType;
372    }
373    SkASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class));
374    int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID);
375    return legacyBitmapConfigToColorType(c);
376}
377
378bool GraphicsJNI::isHardwareConfig(JNIEnv* env, jobject jconfig) {
379    SkASSERT(env);
380    if (NULL == jconfig) {
381        return false;
382    }
383    int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID);
384    return c == kHardware_LegacyBitmapConfig;
385}
386
387jint GraphicsJNI::hardwareLegacyBitmapConfig() {
388    return kHardware_LegacyBitmapConfig;
389}
390
391android::Canvas* GraphicsJNI::getNativeCanvas(JNIEnv* env, jobject canvas) {
392    SkASSERT(env);
393    SkASSERT(canvas);
394    SkASSERT(env->IsInstanceOf(canvas, gCanvas_class));
395    jlong canvasHandle = env->GetLongField(canvas, gCanvas_nativeInstanceID);
396    if (!canvasHandle) {
397        return NULL;
398    }
399    return reinterpret_cast<android::Canvas*>(canvasHandle);
400}
401
402SkRegion* GraphicsJNI::getNativeRegion(JNIEnv* env, jobject region)
403{
404    SkASSERT(env);
405    SkASSERT(region);
406    SkASSERT(env->IsInstanceOf(region, gRegion_class));
407    jlong regionHandle = env->GetLongField(region, gRegion_nativeInstanceID);
408    SkRegion* r = reinterpret_cast<SkRegion*>(regionHandle);
409    SkASSERT(r);
410    return r;
411}
412
413///////////////////////////////////////////////////////////////////////////////////////////
414
415jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap)
416{
417    SkASSERT(bitmap != NULL);
418
419    jobject obj = env->NewObject(gBitmapRegionDecoder_class,
420            gBitmapRegionDecoder_constructorMethodID,
421            reinterpret_cast<jlong>(bitmap));
422    hasException(env); // For the side effect of logging.
423    return obj;
424}
425
426jobject GraphicsJNI::createRegion(JNIEnv* env, SkRegion* region)
427{
428    SkASSERT(region != NULL);
429    jobject obj = env->NewObject(gRegion_class, gRegion_constructorMethodID,
430                                 reinterpret_cast<jlong>(region), 0);
431    hasException(env); // For the side effect of logging.
432    return obj;
433}
434
435///////////////////////////////////////////////////////////////////////////////
436
437android::Bitmap* GraphicsJNI::mapAshmemBitmap(JNIEnv* env, SkBitmap* bitmap,
438        SkColorTable* ctable, int fd, void* addr, size_t size, bool readOnly) {
439    const SkImageInfo& info = bitmap->info();
440    if (info.colorType() == kUnknown_SkColorType) {
441        doThrowIAE(env, "unknown bitmap configuration");
442        return nullptr;
443    }
444
445    if (!addr) {
446        // Map existing ashmem region if not already mapped.
447        int flags = readOnly ? (PROT_READ) : (PROT_READ | PROT_WRITE);
448        size = ashmem_get_size_region(fd);
449        addr = mmap(NULL, size, flags, MAP_SHARED, fd, 0);
450        if (addr == MAP_FAILED) {
451            return nullptr;
452        }
453    }
454
455    // we must respect the rowBytes value already set on the bitmap instead of
456    // attempting to compute our own.
457    const size_t rowBytes = bitmap->rowBytes();
458
459    auto wrapper = new android::Bitmap(addr, fd, size, info, rowBytes, ctable);
460    wrapper->getSkBitmap(bitmap);
461    if (readOnly) {
462        bitmap->pixelRef()->setImmutable();
463    }
464    // since we're already allocated, we lockPixels right away
465    // HeapAllocator behaves this way too
466    bitmap->lockPixels();
467
468    return wrapper;
469}
470
471sk_sp<SkColorSpace> GraphicsJNI::defaultColorSpace() {
472#ifdef ANDROID_ENABLE_LINEAR_BLENDING
473    return SkColorSpace::MakeSRGB();
474#else
475    return nullptr;
476#endif
477}
478
479sk_sp<SkColorSpace> GraphicsJNI::linearColorSpace() {
480    return SkColorSpace::MakeSRGBLinear();
481}
482
483sk_sp<SkColorSpace> GraphicsJNI::colorSpaceForType(SkColorType type) {
484    switch (type) {
485        case kRGBA_F16_SkColorType:
486            return linearColorSpace();
487        default:
488            return defaultColorSpace();
489    }
490}
491
492bool GraphicsJNI::isColorSpaceSRGB(SkColorSpace* colorSpace) {
493    return colorSpace == nullptr || colorSpace->isSRGB();
494}
495
496SkColorSpaceTransferFn GraphicsJNI::getNativeTransferParameters(JNIEnv* env, jobject transferParams) {
497    SkColorSpaceTransferFn p;
498    p.fA = (float) env->GetDoubleField(transferParams, gTransferParams_aFieldID);
499    p.fB = (float) env->GetDoubleField(transferParams, gTransferParams_bFieldID);
500    p.fC = (float) env->GetDoubleField(transferParams, gTransferParams_cFieldID);
501    p.fD = (float) env->GetDoubleField(transferParams, gTransferParams_dFieldID);
502    p.fE = (float) env->GetDoubleField(transferParams, gTransferParams_eFieldID);
503    p.fF = (float) env->GetDoubleField(transferParams, gTransferParams_fFieldID);
504    p.fG = (float) env->GetDoubleField(transferParams, gTransferParams_gFieldID);
505    return p;
506}
507
508SkMatrix44 GraphicsJNI::getNativeXYZMatrix(JNIEnv* env, jfloatArray xyzD50) {
509    SkMatrix44 xyzMatrix(SkMatrix44::kIdentity_Constructor);
510    jfloat* array = env->GetFloatArrayElements(xyzD50, NULL);
511    xyzMatrix.setFloat(0, 0, array[0]);
512    xyzMatrix.setFloat(1, 0, array[1]);
513    xyzMatrix.setFloat(2, 0, array[2]);
514    xyzMatrix.setFloat(0, 1, array[3]);
515    xyzMatrix.setFloat(1, 1, array[4]);
516    xyzMatrix.setFloat(2, 1, array[5]);
517    xyzMatrix.setFloat(0, 2, array[6]);
518    xyzMatrix.setFloat(1, 2, array[7]);
519    xyzMatrix.setFloat(2, 2, array[8]);
520    env->ReleaseFloatArrayElements(xyzD50, array, 0);
521    return xyzMatrix;
522}
523
524sk_sp<SkColorSpace> GraphicsJNI::getNativeColorSpace(JNIEnv* env, jobject colorSpace) {
525    if (colorSpace == nullptr) return nullptr;
526    if (!env->IsInstanceOf(colorSpace, gColorSpaceRGB_class)) {
527        doThrowIAE(env, "The color space must be an RGB color space");
528    }
529
530    jobject transferParams = env->CallObjectMethod(colorSpace,
531            gColorSpaceRGB_getTransferParametersMethodID);
532    if (transferParams == nullptr) {
533        doThrowIAE(env, "The color space must use an ICC parametric transfer function");
534    }
535
536    jfloatArray illuminantD50 = (jfloatArray) env->GetStaticObjectField(gColorSpace_class,
537            gColorSpace_IlluminantD50FieldID);
538    jobject colorSpaceD50 = env->CallStaticObjectMethod(gColorSpace_class,
539            gColorSpace_adaptMethodID, colorSpace, illuminantD50);
540
541    jfloatArray xyzD50 = (jfloatArray) env->CallObjectMethod(colorSpaceD50,
542            gColorSpaceRGB_getTransformMethodID);
543
544    SkMatrix44 xyzMatrix = getNativeXYZMatrix(env, xyzD50);
545    SkColorSpaceTransferFn transferFunction = getNativeTransferParameters(env, transferParams);
546
547    return SkColorSpace::MakeRGB(transferFunction, xyzMatrix);
548}
549
550
551jobject GraphicsJNI::getColorSpace(JNIEnv* env, sk_sp<SkColorSpace>& decodeColorSpace,
552        SkColorType decodeColorType) {
553    jobject colorSpace = nullptr;
554
555    // No need to match, we know what the output color space will be
556    if (decodeColorType == kRGBA_F16_SkColorType) {
557        jobject linearExtendedSRGB = env->GetStaticObjectField(
558                gColorSpace_Named_class, gColorSpace_Named_LinearExtendedSRGBFieldID);
559        colorSpace = env->CallStaticObjectMethod(gColorSpace_class,
560                gColorSpace_getMethodID, linearExtendedSRGB);
561    } else {
562        // Same here, no need to match
563        if (decodeColorSpace->isSRGB()) {
564            jobject sRGB = env->GetStaticObjectField(
565                    gColorSpace_Named_class, gColorSpace_Named_sRGBFieldID);
566            colorSpace = env->CallStaticObjectMethod(gColorSpace_class,
567                    gColorSpace_getMethodID, sRGB);
568        } else if (decodeColorSpace.get() != nullptr) {
569            // Try to match against known RGB color spaces using the CIE XYZ D50
570            // conversion matrix and numerical transfer function parameters
571            SkMatrix44 xyzMatrix(SkMatrix44::kUninitialized_Constructor);
572            LOG_ALWAYS_FATAL_IF(!decodeColorSpace->toXYZD50(&xyzMatrix));
573
574            SkColorSpaceTransferFn transferParams;
575            // We can only handle numerical transfer functions at the moment
576            LOG_ALWAYS_FATAL_IF(!decodeColorSpace->isNumericalTransferFn(&transferParams));
577
578            jobject params = env->NewObject(gTransferParameters_class,
579                    gTransferParameters_constructorMethodID,
580                    transferParams.fA, transferParams.fB, transferParams.fC,
581                    transferParams.fD, transferParams.fE, transferParams.fF,
582                    transferParams.fG);
583
584            jfloatArray xyzArray = env->NewFloatArray(9);
585            jfloat xyz[9] = {
586                    xyzMatrix.getFloat(0, 0),
587                    xyzMatrix.getFloat(1, 0),
588                    xyzMatrix.getFloat(2, 0),
589                    xyzMatrix.getFloat(0, 1),
590                    xyzMatrix.getFloat(1, 1),
591                    xyzMatrix.getFloat(2, 1),
592                    xyzMatrix.getFloat(0, 2),
593                    xyzMatrix.getFloat(1, 2),
594                    xyzMatrix.getFloat(2, 2)
595            };
596            env->SetFloatArrayRegion(xyzArray, 0, 9, xyz);
597
598            colorSpace = env->CallStaticObjectMethod(gColorSpace_class,
599                    gColorSpace_matchMethodID, xyzArray, params);
600
601            if (colorSpace == nullptr) {
602                // We couldn't find an exact match, let's create a new color space
603                // instance with the 3x3 conversion matrix and transfer function
604                colorSpace = env->NewObject(gColorSpaceRGB_class,
605                        gColorSpaceRGB_constructorMethodID,
606                        env->NewStringUTF("Unknown"), xyzArray, params);
607            }
608
609            env->DeleteLocalRef(xyzArray);
610        }
611    }
612    return colorSpace;
613}
614
615///////////////////////////////////////////////////////////////////////////////
616bool HeapAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) {
617    mStorage = android::Bitmap::allocateHeapBitmap(bitmap, ctable);
618    return !!mStorage;
619}
620
621////////////////////////////////////////////////////////////////////////////////
622
623RecyclingClippingPixelAllocator::RecyclingClippingPixelAllocator(
624        android::Bitmap* recycledBitmap, size_t recycledBytes)
625    : mRecycledBitmap(recycledBitmap)
626    , mRecycledBytes(recycledBytes)
627    , mSkiaBitmap(nullptr)
628    , mNeedsCopy(false)
629{}
630
631RecyclingClippingPixelAllocator::~RecyclingClippingPixelAllocator() {}
632
633bool RecyclingClippingPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) {
634    // Ensure that the caller did not pass in a NULL bitmap to the constructor or this
635    // function.
636    LOG_ALWAYS_FATAL_IF(!mRecycledBitmap);
637    LOG_ALWAYS_FATAL_IF(!bitmap);
638    mSkiaBitmap = bitmap;
639
640    // This behaves differently than the RecyclingPixelAllocator.  For backwards
641    // compatibility, the original color type of the recycled bitmap must be maintained.
642    if (mRecycledBitmap->info().colorType() != bitmap->colorType()) {
643        return false;
644    }
645
646    // The Skia bitmap specifies the width and height needed by the decoder.
647    // mRecycledBitmap specifies the width and height of the bitmap that we
648    // want to reuse.  Neither can be changed.  We will try to find a way
649    // to reuse the memory.
650    const int maxWidth = SkTMax(bitmap->width(), mRecycledBitmap->info().width());
651    const int maxHeight = SkTMax(bitmap->height(), mRecycledBitmap->info().height());
652    const SkImageInfo maxInfo = bitmap->info().makeWH(maxWidth, maxHeight);
653    const size_t rowBytes = maxInfo.minRowBytes();
654    const size_t bytesNeeded = maxInfo.getSafeSize(rowBytes);
655    if (bytesNeeded <= mRecycledBytes) {
656        // Here we take advantage of reconfigure() to reset the rowBytes and ctable
657        // of mRecycledBitmap.  It is very important that we pass in
658        // mRecycledBitmap->info() for the SkImageInfo.  According to the
659        // specification for BitmapRegionDecoder, we are not allowed to change
660        // the SkImageInfo.
661        // We can (must) preserve the color space since it doesn't affect the
662        // storage needs
663        mRecycledBitmap->reconfigure(
664                mRecycledBitmap->info().makeColorSpace(bitmap->refColorSpace()),
665                rowBytes, ctable);
666
667        // Give the bitmap the same pixelRef as mRecycledBitmap.
668        // skbug.com/4538: We also need to make sure that the rowBytes on the pixel ref
669        //                 match the rowBytes on the bitmap.
670        bitmap->setInfo(bitmap->info(), rowBytes);
671        mRecycledBitmap->ref();
672        bitmap->setPixelRef(mRecycledBitmap)->unref();
673
674        // Make sure that the recycled bitmap has the correct alpha type.
675        mRecycledBitmap->setAlphaType(bitmap->alphaType());
676
677        bitmap->notifyPixelsChanged();
678        bitmap->lockPixels();
679        mNeedsCopy = false;
680
681        // TODO: If the dimensions of the SkBitmap are smaller than those of
682        // mRecycledBitmap, should we zero the memory in mRecycledBitmap?
683        return true;
684    }
685
686    // In the event that mRecycledBitmap is not large enough, allocate new memory
687    // on the heap.
688    SkBitmap::HeapAllocator heapAllocator;
689
690    // We will need to copy from heap memory to mRecycledBitmap's memory after the
691    // decode is complete.
692    mNeedsCopy = true;
693
694    return heapAllocator.allocPixelRef(bitmap, ctable);
695}
696
697void RecyclingClippingPixelAllocator::copyIfNecessary() {
698    if (mNeedsCopy) {
699        mRecycledBitmap->ref();
700        SkPixelRef* recycledPixels = mRecycledBitmap;
701        void* dst = recycledPixels->pixels();
702        const size_t dstRowBytes = mRecycledBitmap->rowBytes();
703        const size_t bytesToCopy = std::min(mRecycledBitmap->info().minRowBytes(),
704                mSkiaBitmap->info().minRowBytes());
705        const int rowsToCopy = std::min(mRecycledBitmap->info().height(),
706                mSkiaBitmap->info().height());
707        for (int y = 0; y < rowsToCopy; y++) {
708            memcpy(dst, mSkiaBitmap->getAddr(0, y), bytesToCopy);
709            dst = SkTAddOffset<void>(dst, dstRowBytes);
710        }
711        recycledPixels->notifyPixelsChanged();
712        recycledPixels->unref();
713    }
714    mRecycledBitmap = nullptr;
715    mSkiaBitmap = nullptr;
716}
717
718////////////////////////////////////////////////////////////////////////////////
719
720AshmemPixelAllocator::AshmemPixelAllocator(JNIEnv *env) {
721    LOG_ALWAYS_FATAL_IF(env->GetJavaVM(&mJavaVM) != JNI_OK,
722            "env->GetJavaVM failed");
723}
724
725bool AshmemPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) {
726    mStorage = android::Bitmap::allocateAshmemBitmap(bitmap, ctable);
727    return !!mStorage;
728}
729
730////////////////////////////////////////////////////////////////////////////////
731
732int register_android_graphics_Graphics(JNIEnv* env)
733{
734    jmethodID m;
735    jclass c;
736
737    gRect_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Rect"));
738    gRect_leftFieldID = GetFieldIDOrDie(env, gRect_class, "left", "I");
739    gRect_topFieldID = GetFieldIDOrDie(env, gRect_class, "top", "I");
740    gRect_rightFieldID = GetFieldIDOrDie(env, gRect_class, "right", "I");
741    gRect_bottomFieldID = GetFieldIDOrDie(env, gRect_class, "bottom", "I");
742
743    gRectF_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/RectF"));
744    gRectF_leftFieldID = GetFieldIDOrDie(env, gRectF_class, "left", "F");
745    gRectF_topFieldID = GetFieldIDOrDie(env, gRectF_class, "top", "F");
746    gRectF_rightFieldID = GetFieldIDOrDie(env, gRectF_class, "right", "F");
747    gRectF_bottomFieldID = GetFieldIDOrDie(env, gRectF_class, "bottom", "F");
748
749    gPoint_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Point"));
750    gPoint_xFieldID = GetFieldIDOrDie(env, gPoint_class, "x", "I");
751    gPoint_yFieldID = GetFieldIDOrDie(env, gPoint_class, "y", "I");
752
753    gPointF_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/PointF"));
754    gPointF_xFieldID = GetFieldIDOrDie(env, gPointF_class, "x", "F");
755    gPointF_yFieldID = GetFieldIDOrDie(env, gPointF_class, "y", "F");
756
757    gBitmapRegionDecoder_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/BitmapRegionDecoder"));
758    gBitmapRegionDecoder_constructorMethodID = GetMethodIDOrDie(env, gBitmapRegionDecoder_class, "<init>", "(J)V");
759
760    gBitmapConfig_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Bitmap$Config"));
761    gBitmapConfig_nativeInstanceID = GetFieldIDOrDie(env, gBitmapConfig_class, "nativeInt", "I");
762
763    gCanvas_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Canvas"));
764    gCanvas_nativeInstanceID = GetFieldIDOrDie(env, gCanvas_class, "mNativeCanvasWrapper", "J");
765
766    gPicture_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Picture"));
767    gPicture_nativeInstanceID = GetFieldIDOrDie(env, gPicture_class, "mNativePicture", "J");
768
769    gRegion_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Region"));
770    gRegion_nativeInstanceID = GetFieldIDOrDie(env, gRegion_class, "mNativeRegion", "J");
771    gRegion_constructorMethodID = GetMethodIDOrDie(env, gRegion_class, "<init>", "(JI)V");
772
773    c = env->FindClass("java/lang/Byte");
774    gByte_class = (jclass) env->NewGlobalRef(
775        env->GetStaticObjectField(c, env->GetStaticFieldID(c, "TYPE", "Ljava/lang/Class;")));
776
777    gVMRuntime_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "dalvik/system/VMRuntime"));
778    m = env->GetStaticMethodID(gVMRuntime_class, "getRuntime", "()Ldalvik/system/VMRuntime;");
779    gVMRuntime = env->NewGlobalRef(env->CallStaticObjectMethod(gVMRuntime_class, m));
780    gVMRuntime_newNonMovableArray = GetMethodIDOrDie(env, gVMRuntime_class, "newNonMovableArray",
781                                                     "(Ljava/lang/Class;I)Ljava/lang/Object;");
782    gVMRuntime_addressOf = GetMethodIDOrDie(env, gVMRuntime_class, "addressOf", "(Ljava/lang/Object;)J");
783
784    jclass transfer_params_class = FindClassOrDie(env, "android/graphics/ColorSpace$Rgb$TransferParameters");
785    gTransferParams_aFieldID = GetFieldIDOrDie(env, transfer_params_class, "a", "D");
786    gTransferParams_bFieldID = GetFieldIDOrDie(env, transfer_params_class, "b", "D");
787    gTransferParams_cFieldID = GetFieldIDOrDie(env, transfer_params_class, "c", "D");
788    gTransferParams_dFieldID = GetFieldIDOrDie(env, transfer_params_class, "d", "D");
789    gTransferParams_eFieldID = GetFieldIDOrDie(env, transfer_params_class, "e", "D");
790    gTransferParams_fFieldID = GetFieldIDOrDie(env, transfer_params_class, "f", "D");
791    gTransferParams_gFieldID = GetFieldIDOrDie(env, transfer_params_class, "g", "D");
792
793    gColorSpace_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/ColorSpace"));
794    gColorSpace_IlluminantD50FieldID = GetStaticFieldIDOrDie(env,
795            gColorSpace_class, "ILLUMINANT_D50", "[F");
796    gColorSpace_adaptMethodID = GetStaticMethodIDOrDie(env, gColorSpace_class, "adapt",
797            "(Landroid/graphics/ColorSpace;[F)Landroid/graphics/ColorSpace;");
798    gColorSpace_getMethodID = GetStaticMethodIDOrDie(env, gColorSpace_class,
799            "get", "(Landroid/graphics/ColorSpace$Named;)Landroid/graphics/ColorSpace;");
800    gColorSpace_matchMethodID = GetStaticMethodIDOrDie(env, gColorSpace_class, "match",
801            "([FLandroid/graphics/ColorSpace$Rgb$TransferParameters;)Landroid/graphics/ColorSpace;");
802
803    gColorSpaceRGB_class = MakeGlobalRefOrDie(env,
804            FindClassOrDie(env, "android/graphics/ColorSpace$Rgb"));
805    gColorSpaceRGB_constructorMethodID = GetMethodIDOrDie(env, gColorSpaceRGB_class,
806            "<init>", "(Ljava/lang/String;[FLandroid/graphics/ColorSpace$Rgb$TransferParameters;)V");
807    gColorSpaceRGB_getTransferParametersMethodID = GetMethodIDOrDie(env, gColorSpaceRGB_class,
808            "getTransferParameters", "()Landroid/graphics/ColorSpace$Rgb$TransferParameters;");
809    gColorSpaceRGB_getTransformMethodID = GetMethodIDOrDie(env, gColorSpaceRGB_class,
810            "getTransform", "()[F");
811
812    gColorSpace_Named_class = MakeGlobalRefOrDie(env,
813            FindClassOrDie(env, "android/graphics/ColorSpace$Named"));
814    gColorSpace_Named_sRGBFieldID = GetStaticFieldIDOrDie(env,
815            gColorSpace_Named_class, "SRGB", "Landroid/graphics/ColorSpace$Named;");
816    gColorSpace_Named_LinearExtendedSRGBFieldID = GetStaticFieldIDOrDie(env,
817            gColorSpace_Named_class, "LINEAR_EXTENDED_SRGB", "Landroid/graphics/ColorSpace$Named;");
818
819    gTransferParameters_class = MakeGlobalRefOrDie(env, FindClassOrDie(env,
820            "android/graphics/ColorSpace$Rgb$TransferParameters"));
821    gTransferParameters_constructorMethodID = GetMethodIDOrDie(env, gTransferParameters_class,
822            "<init>", "(DDDDDDD)V");
823
824    return 0;
825}
826