Merge Android R (rvc-dev-plus-aosp-without-vendor@6692709)

Bug: 166295507
Merged-In: I3d92a6de21a938f6b352ec26dc23420c0fe02b27
Change-Id: Ifdb80563ef042738778ebb8a7581a97c4e3d96e2

1 files changed, 768 insertions, 0 deletions

diff --git a/libs/hwui/jni/Graphics.cpp b/libs/hwui/jni/Graphics.cpp
new file mode 100644
index 000000000000..f76ecb4c9c8a
--- /dev/null
+++ b/libs/hwui/jni/Graphics.cpp
@@ -0,0 +1,768 @@
+#undef LOG_TAG
+#define LOG_TAG "GraphicsJNI"
+
+#include <assert.h>
+#include <unistd.h>
+
+#include "jni.h"
+#include <nativehelper/JNIHelp.h>
+#include "GraphicsJNI.h"
+
+#include "SkCanvas.h"
+#include "SkMath.h"
+#include "SkRegion.h"
+#include <cutils/ashmem.h>
+#include <hwui/Canvas.h>
+
+using namespace android;
+
+/*static*/ JavaVM* GraphicsJNI::mJavaVM = nullptr;
+
+void GraphicsJNI::setJavaVM(JavaVM* javaVM) {
+  mJavaVM = javaVM;
+}
+
+/** return a pointer to the JNIEnv for this thread */
+JNIEnv* GraphicsJNI::getJNIEnv() {
+  assert(mJavaVM != nullptr);
+  JNIEnv* env;
+  if (mJavaVM->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) {
+      return nullptr;
+  }
+  return env;
+}
+
+/** create a JNIEnv* for this thread or assert if one already exists */
+JNIEnv* GraphicsJNI::attachJNIEnv(const char* envName) {
+  assert(getJNIEnv() == nullptr);
+  JNIEnv* env = nullptr;
+  JavaVMAttachArgs args = { JNI_VERSION_1_4, envName, NULL };
+  int result = mJavaVM->AttachCurrentThread(&env, (void*) &args);
+  if (result != JNI_OK) {
+      ALOGE("thread attach failed: %#x", result);
+  }
+  return env;
+}
+
+/** detach the current thread from the JavaVM */
+void GraphicsJNI::detachJNIEnv() {
+  assert(mJavaVM != nullptr);
+  mJavaVM->DetachCurrentThread();
+}
+
+void doThrowNPE(JNIEnv* env) {
+    jniThrowNullPointerException(env, NULL);
+}
+
+void doThrowAIOOBE(JNIEnv* env) {
+    jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL);
+}
+
+void doThrowRE(JNIEnv* env, const char* msg) {
+    jniThrowRuntimeException(env, msg);
+}
+
+void doThrowIAE(JNIEnv* env, const char* msg) {
+    jniThrowException(env, "java/lang/IllegalArgumentException", msg);
+}
+
+void doThrowISE(JNIEnv* env, const char* msg) {
+    jniThrowException(env, "java/lang/IllegalStateException", msg);
+}
+
+void doThrowOOME(JNIEnv* env, const char* msg) {
+    jniThrowException(env, "java/lang/OutOfMemoryError", msg);
+}
+
+void doThrowIOE(JNIEnv* env, const char* msg) {
+    jniThrowException(env, "java/io/IOException", msg);
+}
+
+bool GraphicsJNI::hasException(JNIEnv *env) {
+    if (env->ExceptionCheck() != 0) {
+        ALOGE("*** Uncaught exception returned from Java call!\n");
+        env->ExceptionDescribe();
+        return true;
+    }
+    return false;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+AutoJavaFloatArray::AutoJavaFloatArray(JNIEnv* env, jfloatArray array,
+                                       int minLength, JNIAccess access)
+: fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
+    ALOG_ASSERT(env);
+    if (array) {
+        fLen = env->GetArrayLength(array);
+        if (fLen < minLength) {
+            LOG_ALWAYS_FATAL("bad length");
+        }
+        fPtr = env->GetFloatArrayElements(array, NULL);
+    }
+    fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0;
+}
+
+AutoJavaFloatArray::~AutoJavaFloatArray() {
+    if (fPtr) {
+        fEnv->ReleaseFloatArrayElements(fArray, fPtr, fReleaseMode);
+    }
+}
+
+AutoJavaIntArray::AutoJavaIntArray(JNIEnv* env, jintArray array,
+                                       int minLength)
+: fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
+    ALOG_ASSERT(env);
+    if (array) {
+        fLen = env->GetArrayLength(array);
+        if (fLen < minLength) {
+            LOG_ALWAYS_FATAL("bad length");
+        }
+        fPtr = env->GetIntArrayElements(array, NULL);
+    }
+}
+
+AutoJavaIntArray::~AutoJavaIntArray() {
+    if (fPtr) {
+        fEnv->ReleaseIntArrayElements(fArray, fPtr, 0);
+    }
+}
+
+AutoJavaShortArray::AutoJavaShortArray(JNIEnv* env, jshortArray array,
+                                       int minLength, JNIAccess access)
+: fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
+    ALOG_ASSERT(env);
+    if (array) {
+        fLen = env->GetArrayLength(array);
+        if (fLen < minLength) {
+            LOG_ALWAYS_FATAL("bad length");
+        }
+        fPtr = env->GetShortArrayElements(array, NULL);
+    }
+    fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0;
+}
+
+AutoJavaShortArray::~AutoJavaShortArray() {
+    if (fPtr) {
+        fEnv->ReleaseShortArrayElements(fArray, fPtr, fReleaseMode);
+    }
+}
+
+AutoJavaByteArray::AutoJavaByteArray(JNIEnv* env, jbyteArray array,
+                                       int minLength)
+: fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
+    ALOG_ASSERT(env);
+    if (array) {
+        fLen = env->GetArrayLength(array);
+        if (fLen < minLength) {
+            LOG_ALWAYS_FATAL("bad length");
+        }
+        fPtr = env->GetByteArrayElements(array, NULL);
+    }
+}
+
+AutoJavaByteArray::~AutoJavaByteArray() {
+    if (fPtr) {
+        fEnv->ReleaseByteArrayElements(fArray, fPtr, 0);
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+static jclass   gRect_class;
+static jfieldID gRect_leftFieldID;
+static jfieldID gRect_topFieldID;
+static jfieldID gRect_rightFieldID;
+static jfieldID gRect_bottomFieldID;
+
+static jclass   gRectF_class;
+static jfieldID gRectF_leftFieldID;
+static jfieldID gRectF_topFieldID;
+static jfieldID gRectF_rightFieldID;
+static jfieldID gRectF_bottomFieldID;
+
+static jclass   gPoint_class;
+static jfieldID gPoint_xFieldID;
+static jfieldID gPoint_yFieldID;
+
+static jclass   gPointF_class;
+static jfieldID gPointF_xFieldID;
+static jfieldID gPointF_yFieldID;
+
+static jclass   gBitmapConfig_class;
+static jfieldID gBitmapConfig_nativeInstanceID;
+static jmethodID gBitmapConfig_nativeToConfigMethodID;
+
+static jclass   gBitmapRegionDecoder_class;
+static jmethodID gBitmapRegionDecoder_constructorMethodID;
+
+static jclass   gCanvas_class;
+static jfieldID gCanvas_nativeInstanceID;
+
+static jclass   gPicture_class;
+static jfieldID gPicture_nativeInstanceID;
+
+static jclass   gRegion_class;
+static jfieldID gRegion_nativeInstanceID;
+static jmethodID gRegion_constructorMethodID;
+
+static jclass    gByte_class;
+static jobject   gVMRuntime;
+static jclass    gVMRuntime_class;
+static jmethodID gVMRuntime_newNonMovableArray;
+static jmethodID gVMRuntime_addressOf;
+
+static jclass gColorSpace_class;
+static jmethodID gColorSpace_getMethodID;
+static jmethodID gColorSpace_matchMethodID;
+
+static jclass gColorSpaceRGB_class;
+static jmethodID gColorSpaceRGB_constructorMethodID;
+
+static jclass gColorSpace_Named_class;
+static jfieldID gColorSpace_Named_sRGBFieldID;
+static jfieldID gColorSpace_Named_ExtendedSRGBFieldID;
+static jfieldID gColorSpace_Named_LinearSRGBFieldID;
+static jfieldID gColorSpace_Named_LinearExtendedSRGBFieldID;
+
+static jclass gTransferParameters_class;
+static jmethodID gTransferParameters_constructorMethodID;
+
+///////////////////////////////////////////////////////////////////////////////
+
+void GraphicsJNI::get_jrect(JNIEnv* env, jobject obj, int* L, int* T, int* R, int* B)
+{
+    ALOG_ASSERT(env->IsInstanceOf(obj, gRect_class));
+
+    *L = env->GetIntField(obj, gRect_leftFieldID);
+    *T = env->GetIntField(obj, gRect_topFieldID);
+    *R = env->GetIntField(obj, gRect_rightFieldID);
+    *B = env->GetIntField(obj, gRect_bottomFieldID);
+}
+
+void GraphicsJNI::set_jrect(JNIEnv* env, jobject obj, int L, int T, int R, int B)
+{
+    ALOG_ASSERT(env->IsInstanceOf(obj, gRect_class));
+
+    env->SetIntField(obj, gRect_leftFieldID, L);
+    env->SetIntField(obj, gRect_topFieldID, T);
+    env->SetIntField(obj, gRect_rightFieldID, R);
+    env->SetIntField(obj, gRect_bottomFieldID, B);
+}
+
+SkIRect* GraphicsJNI::jrect_to_irect(JNIEnv* env, jobject obj, SkIRect* ir)
+{
+    ALOG_ASSERT(env->IsInstanceOf(obj, gRect_class));
+
+    ir->setLTRB(env->GetIntField(obj, gRect_leftFieldID),
+                env->GetIntField(obj, gRect_topFieldID),
+                env->GetIntField(obj, gRect_rightFieldID),
+                env->GetIntField(obj, gRect_bottomFieldID));
+    return ir;
+}
+
+void GraphicsJNI::irect_to_jrect(const SkIRect& ir, JNIEnv* env, jobject obj)
+{
+    ALOG_ASSERT(env->IsInstanceOf(obj, gRect_class));
+
+    env->SetIntField(obj, gRect_leftFieldID, ir.fLeft);
+    env->SetIntField(obj, gRect_topFieldID, ir.fTop);
+    env->SetIntField(obj, gRect_rightFieldID, ir.fRight);
+    env->SetIntField(obj, gRect_bottomFieldID, ir.fBottom);
+}
+
+SkRect* GraphicsJNI::jrectf_to_rect(JNIEnv* env, jobject obj, SkRect* r)
+{
+    ALOG_ASSERT(env->IsInstanceOf(obj, gRectF_class));
+
+    r->setLTRB(env->GetFloatField(obj, gRectF_leftFieldID),
+               env->GetFloatField(obj, gRectF_topFieldID),
+               env->GetFloatField(obj, gRectF_rightFieldID),
+               env->GetFloatField(obj, gRectF_bottomFieldID));
+    return r;
+}
+
+SkRect* GraphicsJNI::jrect_to_rect(JNIEnv* env, jobject obj, SkRect* r)
+{
+    ALOG_ASSERT(env->IsInstanceOf(obj, gRect_class));
+
+    r->setLTRB(SkIntToScalar(env->GetIntField(obj, gRect_leftFieldID)),
+               SkIntToScalar(env->GetIntField(obj, gRect_topFieldID)),
+               SkIntToScalar(env->GetIntField(obj, gRect_rightFieldID)),
+               SkIntToScalar(env->GetIntField(obj, gRect_bottomFieldID)));
+    return r;
+}
+
+void GraphicsJNI::rect_to_jrectf(const SkRect& r, JNIEnv* env, jobject obj)
+{
+    ALOG_ASSERT(env->IsInstanceOf(obj, gRectF_class));
+
+    env->SetFloatField(obj, gRectF_leftFieldID, SkScalarToFloat(r.fLeft));
+    env->SetFloatField(obj, gRectF_topFieldID, SkScalarToFloat(r.fTop));
+    env->SetFloatField(obj, gRectF_rightFieldID, SkScalarToFloat(r.fRight));
+    env->SetFloatField(obj, gRectF_bottomFieldID, SkScalarToFloat(r.fBottom));
+}
+
+SkIPoint* GraphicsJNI::jpoint_to_ipoint(JNIEnv* env, jobject obj, SkIPoint* point)
+{
+    ALOG_ASSERT(env->IsInstanceOf(obj, gPoint_class));
+
+    point->set(env->GetIntField(obj, gPoint_xFieldID),
+               env->GetIntField(obj, gPoint_yFieldID));
+    return point;
+}
+
+void GraphicsJNI::ipoint_to_jpoint(const SkIPoint& ir, JNIEnv* env, jobject obj)
+{
+    ALOG_ASSERT(env->IsInstanceOf(obj, gPoint_class));
+
+    env->SetIntField(obj, gPoint_xFieldID, ir.fX);
+    env->SetIntField(obj, gPoint_yFieldID, ir.fY);
+}
+
+SkPoint* GraphicsJNI::jpointf_to_point(JNIEnv* env, jobject obj, SkPoint* point)
+{
+    ALOG_ASSERT(env->IsInstanceOf(obj, gPointF_class));
+
+    point->set(env->GetIntField(obj, gPointF_xFieldID),
+               env->GetIntField(obj, gPointF_yFieldID));
+    return point;
+}
+
+void GraphicsJNI::point_to_jpointf(const SkPoint& r, JNIEnv* env, jobject obj)
+{
+    ALOG_ASSERT(env->IsInstanceOf(obj, gPointF_class));
+
+    env->SetFloatField(obj, gPointF_xFieldID, SkScalarToFloat(r.fX));
+    env->SetFloatField(obj, gPointF_yFieldID, SkScalarToFloat(r.fY));
+}
+
+// See enum values in GraphicsJNI.h
+jint GraphicsJNI::colorTypeToLegacyBitmapConfig(SkColorType colorType) {
+    switch (colorType) {
+        case kRGBA_F16_SkColorType:
+            return kRGBA_16F_LegacyBitmapConfig;
+        case kN32_SkColorType:
+            return kARGB_8888_LegacyBitmapConfig;
+        case kARGB_4444_SkColorType:
+            return kARGB_4444_LegacyBitmapConfig;
+        case kRGB_565_SkColorType:
+            return kRGB_565_LegacyBitmapConfig;
+        case kAlpha_8_SkColorType:
+            return kA8_LegacyBitmapConfig;
+        case kUnknown_SkColorType:
+        default:
+            break;
+    }
+    return kNo_LegacyBitmapConfig;
+}
+
+SkColorType GraphicsJNI::legacyBitmapConfigToColorType(jint legacyConfig) {
+    const uint8_t gConfig2ColorType[] = {
+        kUnknown_SkColorType,
+        kAlpha_8_SkColorType,
+        kUnknown_SkColorType, // Previously kIndex_8_SkColorType,
+        kRGB_565_SkColorType,
+        kARGB_4444_SkColorType,
+        kN32_SkColorType,
+        kRGBA_F16_SkColorType,
+        kN32_SkColorType
+    };
+
+    if (legacyConfig < 0 || legacyConfig > kLastEnum_LegacyBitmapConfig) {
+        legacyConfig = kNo_LegacyBitmapConfig;
+    }
+    return static_cast<SkColorType>(gConfig2ColorType[legacyConfig]);
+}
+
+AndroidBitmapFormat GraphicsJNI::getFormatFromConfig(JNIEnv* env, jobject jconfig) {
+    ALOG_ASSERT(env);
+    if (NULL == jconfig) {
+        return ANDROID_BITMAP_FORMAT_NONE;
+    }
+    ALOG_ASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class));
+    jint javaConfigId = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID);
+
+    const AndroidBitmapFormat config2BitmapFormat[] = {
+        ANDROID_BITMAP_FORMAT_NONE,
+        ANDROID_BITMAP_FORMAT_A_8,
+        ANDROID_BITMAP_FORMAT_NONE, // Previously Config.Index_8
+        ANDROID_BITMAP_FORMAT_RGB_565,
+        ANDROID_BITMAP_FORMAT_RGBA_4444,
+        ANDROID_BITMAP_FORMAT_RGBA_8888,
+        ANDROID_BITMAP_FORMAT_RGBA_F16,
+        ANDROID_BITMAP_FORMAT_NONE // Congfig.HARDWARE
+    };
+    return config2BitmapFormat[javaConfigId];
+}
+
+jobject GraphicsJNI::getConfigFromFormat(JNIEnv* env, AndroidBitmapFormat format) {
+    ALOG_ASSERT(env);
+    jint configId = kNo_LegacyBitmapConfig;
+    switch (format) {
+      case ANDROID_BITMAP_FORMAT_A_8:
+        configId = kA8_LegacyBitmapConfig;
+        break;
+      case ANDROID_BITMAP_FORMAT_RGB_565:
+        configId = kRGB_565_LegacyBitmapConfig;
+        break;
+      case ANDROID_BITMAP_FORMAT_RGBA_4444:
+        configId = kARGB_4444_LegacyBitmapConfig;
+        break;
+      case ANDROID_BITMAP_FORMAT_RGBA_8888:
+        configId = kARGB_8888_LegacyBitmapConfig;
+        break;
+      case ANDROID_BITMAP_FORMAT_RGBA_F16:
+        configId = kRGBA_16F_LegacyBitmapConfig;
+        break;
+      default:
+        break;
+    }
+
+    return env->CallStaticObjectMethod(gBitmapConfig_class,
+                                       gBitmapConfig_nativeToConfigMethodID, configId);
+}
+
+SkColorType GraphicsJNI::getNativeBitmapColorType(JNIEnv* env, jobject jconfig) {
+    ALOG_ASSERT(env);
+    if (NULL == jconfig) {
+        return kUnknown_SkColorType;
+    }
+    ALOG_ASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class));
+    int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID);
+    return legacyBitmapConfigToColorType(c);
+}
+
+bool GraphicsJNI::isHardwareConfig(JNIEnv* env, jobject jconfig) {
+    ALOG_ASSERT(env);
+    if (NULL == jconfig) {
+        return false;
+    }
+    int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID);
+    return c == kHardware_LegacyBitmapConfig;
+}
+
+jint GraphicsJNI::hardwareLegacyBitmapConfig() {
+    return kHardware_LegacyBitmapConfig;
+}
+
+android::Canvas* GraphicsJNI::getNativeCanvas(JNIEnv* env, jobject canvas) {
+    ALOG_ASSERT(env);
+    ALOG_ASSERT(canvas);
+    ALOG_ASSERT(env->IsInstanceOf(canvas, gCanvas_class));
+    jlong canvasHandle = env->GetLongField(canvas, gCanvas_nativeInstanceID);
+    if (!canvasHandle) {
+        return NULL;
+    }
+    return reinterpret_cast<android::Canvas*>(canvasHandle);
+}
+
+SkRegion* GraphicsJNI::getNativeRegion(JNIEnv* env, jobject region)
+{
+    ALOG_ASSERT(env);
+    ALOG_ASSERT(region);
+    ALOG_ASSERT(env->IsInstanceOf(region, gRegion_class));
+    jlong regionHandle = env->GetLongField(region, gRegion_nativeInstanceID);
+    SkRegion* r = reinterpret_cast<SkRegion*>(regionHandle);
+    ALOG_ASSERT(r);
+    return r;
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////
+
+jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap)
+{
+    ALOG_ASSERT(bitmap != NULL);
+
+    jobject obj = env->NewObject(gBitmapRegionDecoder_class,
+            gBitmapRegionDecoder_constructorMethodID,
+            reinterpret_cast<jlong>(bitmap));
+    hasException(env); // For the side effect of logging.
+    return obj;
+}
+
+jobject GraphicsJNI::createRegion(JNIEnv* env, SkRegion* region)
+{
+    ALOG_ASSERT(region != NULL);
+    jobject obj = env->NewObject(gRegion_class, gRegion_constructorMethodID,
+                                 reinterpret_cast<jlong>(region), 0);
+    hasException(env); // For the side effect of logging.
+    return obj;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+jobject GraphicsJNI::getColorSpace(JNIEnv* env, SkColorSpace* decodeColorSpace,
+        SkColorType decodeColorType) {
+    if (!decodeColorSpace || decodeColorType == kAlpha_8_SkColorType) {
+        return nullptr;
+    }
+
+    // Special checks for the common sRGB cases and their extended variants.
+    jobject namedCS = nullptr;
+    sk_sp<SkColorSpace> srgbLinear = SkColorSpace::MakeSRGBLinear();
+    if (decodeColorType == kRGBA_F16_SkColorType) {
+        // An F16 Bitmap will always report that it is EXTENDED if
+        // it matches a ColorSpace that has an EXTENDED variant.
+        if (decodeColorSpace->isSRGB()) {
+            namedCS = env->GetStaticObjectField(gColorSpace_Named_class,
+                                                gColorSpace_Named_ExtendedSRGBFieldID);
+        } else if (decodeColorSpace == srgbLinear.get()) {
+            namedCS = env->GetStaticObjectField(gColorSpace_Named_class,
+                                                gColorSpace_Named_LinearExtendedSRGBFieldID);
+        }
+    } else if (decodeColorSpace->isSRGB()) {
+        namedCS = env->GetStaticObjectField(gColorSpace_Named_class,
+                                            gColorSpace_Named_sRGBFieldID);
+    } else if (decodeColorSpace == srgbLinear.get()) {
+        namedCS = env->GetStaticObjectField(gColorSpace_Named_class,
+                                            gColorSpace_Named_LinearSRGBFieldID);
+    }
+
+    if (namedCS) {
+        return env->CallStaticObjectMethod(gColorSpace_class, gColorSpace_getMethodID, namedCS);
+    }
+
+    // Try to match against known RGB color spaces using the CIE XYZ D50
+    // conversion matrix and numerical transfer function parameters
+    skcms_Matrix3x3 xyzMatrix;
+    LOG_ALWAYS_FATAL_IF(!decodeColorSpace->toXYZD50(&xyzMatrix));
+
+    skcms_TransferFunction transferParams;
+    // We can only handle numerical transfer functions at the moment
+    LOG_ALWAYS_FATAL_IF(!decodeColorSpace->isNumericalTransferFn(&transferParams));
+
+    jobject params = env->NewObject(gTransferParameters_class,
+            gTransferParameters_constructorMethodID,
+            transferParams.a, transferParams.b, transferParams.c,
+            transferParams.d, transferParams.e, transferParams.f,
+            transferParams.g);
+
+    jfloatArray xyzArray = env->NewFloatArray(9);
+    jfloat xyz[9] = {
+            xyzMatrix.vals[0][0],
+            xyzMatrix.vals[1][0],
+            xyzMatrix.vals[2][0],
+            xyzMatrix.vals[0][1],
+            xyzMatrix.vals[1][1],
+            xyzMatrix.vals[2][1],
+            xyzMatrix.vals[0][2],
+            xyzMatrix.vals[1][2],
+            xyzMatrix.vals[2][2]
+    };
+    env->SetFloatArrayRegion(xyzArray, 0, 9, xyz);
+
+    jobject colorSpace = env->CallStaticObjectMethod(gColorSpace_class,
+            gColorSpace_matchMethodID, xyzArray, params);
+
+    if (colorSpace == nullptr) {
+        // We couldn't find an exact match, let's create a new color space
+        // instance with the 3x3 conversion matrix and transfer function
+        colorSpace = env->NewObject(gColorSpaceRGB_class,
+                gColorSpaceRGB_constructorMethodID,
+                env->NewStringUTF("Unknown"), xyzArray, params);
+    }
+
+    env->DeleteLocalRef(xyzArray);
+    return colorSpace;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+bool HeapAllocator::allocPixelRef(SkBitmap* bitmap) {
+    mStorage = android::Bitmap::allocateHeapBitmap(bitmap);
+    return !!mStorage;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+RecyclingClippingPixelAllocator::RecyclingClippingPixelAllocator(
+        android::Bitmap* recycledBitmap, size_t recycledBytes)
+    : mRecycledBitmap(recycledBitmap)
+    , mRecycledBytes(recycledBytes)
+    , mSkiaBitmap(nullptr)
+    , mNeedsCopy(false)
+{}
+
+RecyclingClippingPixelAllocator::~RecyclingClippingPixelAllocator() {}
+
+bool RecyclingClippingPixelAllocator::allocPixelRef(SkBitmap* bitmap) {
+    // Ensure that the caller did not pass in a NULL bitmap to the constructor or this
+    // function.
+    LOG_ALWAYS_FATAL_IF(!mRecycledBitmap);
+    LOG_ALWAYS_FATAL_IF(!bitmap);
+    mSkiaBitmap = bitmap;
+
+    // This behaves differently than the RecyclingPixelAllocator.  For backwards
+    // compatibility, the original color type of the recycled bitmap must be maintained.
+    if (mRecycledBitmap->info().colorType() != bitmap->colorType()) {
+        return false;
+    }
+
+    // The Skia bitmap specifies the width and height needed by the decoder.
+    // mRecycledBitmap specifies the width and height of the bitmap that we
+    // want to reuse.  Neither can be changed.  We will try to find a way
+    // to reuse the memory.
+    const int maxWidth = std::max(bitmap->width(), mRecycledBitmap->info().width());
+    const int maxHeight = std::max(bitmap->height(), mRecycledBitmap->info().height());
+    const SkImageInfo maxInfo = bitmap->info().makeWH(maxWidth, maxHeight);
+    const size_t rowBytes = maxInfo.minRowBytes();
+    const size_t bytesNeeded = maxInfo.computeByteSize(rowBytes);
+    if (bytesNeeded <= mRecycledBytes) {
+        // Here we take advantage of reconfigure() to reset the rowBytes
+        // of mRecycledBitmap.  It is very important that we pass in
+        // mRecycledBitmap->info() for the SkImageInfo.  According to the
+        // specification for BitmapRegionDecoder, we are not allowed to change
+        // the SkImageInfo.
+        // We can (must) preserve the color space since it doesn't affect the
+        // storage needs
+        mRecycledBitmap->reconfigure(
+                mRecycledBitmap->info().makeColorSpace(bitmap->refColorSpace()),
+                rowBytes);
+
+        // Give the bitmap the same pixelRef as mRecycledBitmap.
+        // skbug.com/4538: We also need to make sure that the rowBytes on the pixel ref
+        //                 match the rowBytes on the bitmap.
+        bitmap->setInfo(bitmap->info(), rowBytes);
+        bitmap->setPixelRef(sk_ref_sp(mRecycledBitmap), 0, 0);
+
+        // Make sure that the recycled bitmap has the correct alpha type.
+        mRecycledBitmap->setAlphaType(bitmap->alphaType());
+
+        bitmap->notifyPixelsChanged();
+        mNeedsCopy = false;
+
+        // TODO: If the dimensions of the SkBitmap are smaller than those of
+        // mRecycledBitmap, should we zero the memory in mRecycledBitmap?
+        return true;
+    }
+
+    // In the event that mRecycledBitmap is not large enough, allocate new memory
+    // on the heap.
+    SkBitmap::HeapAllocator heapAllocator;
+
+    // We will need to copy from heap memory to mRecycledBitmap's memory after the
+    // decode is complete.
+    mNeedsCopy = true;
+
+    return heapAllocator.allocPixelRef(bitmap);
+}
+
+void RecyclingClippingPixelAllocator::copyIfNecessary() {
+    if (mNeedsCopy) {
+        mRecycledBitmap->ref();
+        SkPixelRef* recycledPixels = mRecycledBitmap;
+        void* dst = recycledPixels->pixels();
+        const size_t dstRowBytes = mRecycledBitmap->rowBytes();
+        const size_t bytesToCopy = std::min(mRecycledBitmap->info().minRowBytes(),
+                mSkiaBitmap->info().minRowBytes());
+        const int rowsToCopy = std::min(mRecycledBitmap->info().height(),
+                mSkiaBitmap->info().height());
+        for (int y = 0; y < rowsToCopy; y++) {
+            memcpy(dst, mSkiaBitmap->getAddr(0, y), bytesToCopy);
+            dst = SkTAddOffset<void>(dst, dstRowBytes);
+        }
+        recycledPixels->notifyPixelsChanged();
+        recycledPixels->unref();
+    }
+    mRecycledBitmap = nullptr;
+    mSkiaBitmap = nullptr;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+AshmemPixelAllocator::AshmemPixelAllocator(JNIEnv *env) {
+    LOG_ALWAYS_FATAL_IF(env->GetJavaVM(&mJavaVM) != JNI_OK,
+            "env->GetJavaVM failed");
+}
+
+bool AshmemPixelAllocator::allocPixelRef(SkBitmap* bitmap) {
+    mStorage = android::Bitmap::allocateAshmemBitmap(bitmap);
+    return !!mStorage;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+int register_android_graphics_Graphics(JNIEnv* env)
+{
+    jmethodID m;
+    jclass c;
+
+    gRect_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Rect"));
+    gRect_leftFieldID = GetFieldIDOrDie(env, gRect_class, "left", "I");
+    gRect_topFieldID = GetFieldIDOrDie(env, gRect_class, "top", "I");
+    gRect_rightFieldID = GetFieldIDOrDie(env, gRect_class, "right", "I");
+    gRect_bottomFieldID = GetFieldIDOrDie(env, gRect_class, "bottom", "I");
+
+    gRectF_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/RectF"));
+    gRectF_leftFieldID = GetFieldIDOrDie(env, gRectF_class, "left", "F");
+    gRectF_topFieldID = GetFieldIDOrDie(env, gRectF_class, "top", "F");
+    gRectF_rightFieldID = GetFieldIDOrDie(env, gRectF_class, "right", "F");
+    gRectF_bottomFieldID = GetFieldIDOrDie(env, gRectF_class, "bottom", "F");
+
+    gPoint_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Point"));
+    gPoint_xFieldID = GetFieldIDOrDie(env, gPoint_class, "x", "I");
+    gPoint_yFieldID = GetFieldIDOrDie(env, gPoint_class, "y", "I");
+
+    gPointF_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/PointF"));
+    gPointF_xFieldID = GetFieldIDOrDie(env, gPointF_class, "x", "F");
+    gPointF_yFieldID = GetFieldIDOrDie(env, gPointF_class, "y", "F");
+
+    gBitmapRegionDecoder_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/BitmapRegionDecoder"));
+    gBitmapRegionDecoder_constructorMethodID = GetMethodIDOrDie(env, gBitmapRegionDecoder_class, "<init>", "(J)V");
+
+    gBitmapConfig_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Bitmap$Config"));
+    gBitmapConfig_nativeInstanceID = GetFieldIDOrDie(env, gBitmapConfig_class, "nativeInt", "I");
+    gBitmapConfig_nativeToConfigMethodID = GetStaticMethodIDOrDie(env, gBitmapConfig_class,
+                                                                  "nativeToConfig",
+                                                                  "(I)Landroid/graphics/Bitmap$Config;");
+
+    gCanvas_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Canvas"));
+    gCanvas_nativeInstanceID = GetFieldIDOrDie(env, gCanvas_class, "mNativeCanvasWrapper", "J");
+
+    gPicture_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Picture"));
+    gPicture_nativeInstanceID = GetFieldIDOrDie(env, gPicture_class, "mNativePicture", "J");
+
+    gRegion_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Region"));
+    gRegion_nativeInstanceID = GetFieldIDOrDie(env, gRegion_class, "mNativeRegion", "J");
+    gRegion_constructorMethodID = GetMethodIDOrDie(env, gRegion_class, "<init>", "(JI)V");
+
+    c = env->FindClass("java/lang/Byte");
+    gByte_class = (jclass) env->NewGlobalRef(
+        env->GetStaticObjectField(c, env->GetStaticFieldID(c, "TYPE", "Ljava/lang/Class;")));
+
+    gVMRuntime_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "dalvik/system/VMRuntime"));
+    m = env->GetStaticMethodID(gVMRuntime_class, "getRuntime", "()Ldalvik/system/VMRuntime;");
+    gVMRuntime = env->NewGlobalRef(env->CallStaticObjectMethod(gVMRuntime_class, m));
+    gVMRuntime_newNonMovableArray = GetMethodIDOrDie(env, gVMRuntime_class, "newNonMovableArray",
+                                                     "(Ljava/lang/Class;I)Ljava/lang/Object;");
+    gVMRuntime_addressOf = GetMethodIDOrDie(env, gVMRuntime_class, "addressOf", "(Ljava/lang/Object;)J");
+
+    gColorSpace_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/ColorSpace"));
+    gColorSpace_getMethodID = GetStaticMethodIDOrDie(env, gColorSpace_class,
+            "get", "(Landroid/graphics/ColorSpace$Named;)Landroid/graphics/ColorSpace;");
+    gColorSpace_matchMethodID = GetStaticMethodIDOrDie(env, gColorSpace_class, "match",
+            "([FLandroid/graphics/ColorSpace$Rgb$TransferParameters;)Landroid/graphics/ColorSpace;");
+
+    gColorSpaceRGB_class = MakeGlobalRefOrDie(env,
+            FindClassOrDie(env, "android/graphics/ColorSpace$Rgb"));
+    gColorSpaceRGB_constructorMethodID = GetMethodIDOrDie(env, gColorSpaceRGB_class,
+            "<init>", "(Ljava/lang/String;[FLandroid/graphics/ColorSpace$Rgb$TransferParameters;)V");
+
+    gColorSpace_Named_class = MakeGlobalRefOrDie(env,
+            FindClassOrDie(env, "android/graphics/ColorSpace$Named"));
+    gColorSpace_Named_sRGBFieldID = GetStaticFieldIDOrDie(env,
+            gColorSpace_Named_class, "SRGB", "Landroid/graphics/ColorSpace$Named;");
+    gColorSpace_Named_ExtendedSRGBFieldID = GetStaticFieldIDOrDie(env,
+            gColorSpace_Named_class, "EXTENDED_SRGB", "Landroid/graphics/ColorSpace$Named;");
+    gColorSpace_Named_LinearSRGBFieldID = GetStaticFieldIDOrDie(env,
+            gColorSpace_Named_class, "LINEAR_SRGB", "Landroid/graphics/ColorSpace$Named;");
+    gColorSpace_Named_LinearExtendedSRGBFieldID = GetStaticFieldIDOrDie(env,
+            gColorSpace_Named_class, "LINEAR_EXTENDED_SRGB", "Landroid/graphics/ColorSpace$Named;");
+
+    gTransferParameters_class = MakeGlobalRefOrDie(env, FindClassOrDie(env,
+            "android/graphics/ColorSpace$Rgb$TransferParameters"));
+    gTransferParameters_constructorMethodID = GetMethodIDOrDie(env, gTransferParameters_class,
+            "<init>", "(DDDDDDD)V");
+
+    return 0;
+}