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android_frameworks_base/libs/hwui/jni/Graphics.cpp
Seigo Nonaka 1ed4f6441f Add necessary APIs for supporting glyph level drawing 
This CL adds following APIs

Font#cloneWithSettings
  This API provides a faster Font instance creation for different
  variation settings.

Font#getBounds
  This API provides glyph advance and bounding box information.

Font#getMetrics
  This API provides font metrics that will be used for deciding line
  height and/or baseline.

Bug: 168136332
Test: atest FontTest
Test: TreeHugger

Change-Id: I335557ce47ea0ca8e012c2a48b804c00bb348392
2020-09-23 13:01:38 -07:00

828 lines
31 KiB
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Raw Blame History

#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 "SkFontMetrics.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;
static jclass gFontMetrics_class;
static jfieldID gFontMetrics_top;
static jfieldID gFontMetrics_ascent;
static jfieldID gFontMetrics_descent;
static jfieldID gFontMetrics_bottom;
static jfieldID gFontMetrics_leading;
static jclass gFontMetricsInt_class;
static jfieldID gFontMetricsInt_top;
static jfieldID gFontMetricsInt_ascent;
static jfieldID gFontMetricsInt_descent;
static jfieldID gFontMetricsInt_bottom;
static jfieldID gFontMetricsInt_leading;
///////////////////////////////////////////////////////////////////////////////
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;
}
void GraphicsJNI::set_metrics(JNIEnv* env, jobject metrics, const SkFontMetrics& skmetrics) {
if (metrics == nullptr) return;
SkASSERT(env->IsInstanceOf(metrics, gFontMetrics_class));
env->SetFloatField(metrics, gFontMetrics_top, SkScalarToFloat(skmetrics.fTop));
env->SetFloatField(metrics, gFontMetrics_ascent, SkScalarToFloat(skmetrics.fAscent));
env->SetFloatField(metrics, gFontMetrics_descent, SkScalarToFloat(skmetrics.fDescent));
env->SetFloatField(metrics, gFontMetrics_bottom, SkScalarToFloat(skmetrics.fBottom));
env->SetFloatField(metrics, gFontMetrics_leading, SkScalarToFloat(skmetrics.fLeading));
}
int GraphicsJNI::set_metrics_int(JNIEnv* env, jobject metrics, const SkFontMetrics& skmetrics) {
int ascent = SkScalarRoundToInt(skmetrics.fAscent);
int descent = SkScalarRoundToInt(skmetrics.fDescent);
int leading = SkScalarRoundToInt(skmetrics.fLeading);
if (metrics) {
SkASSERT(env->IsInstanceOf(metrics, gFontMetricsInt_class));
env->SetIntField(metrics, gFontMetricsInt_top, SkScalarFloorToInt(skmetrics.fTop));
env->SetIntField(metrics, gFontMetricsInt_ascent, ascent);
env->SetIntField(metrics, gFontMetricsInt_descent, descent);
env->SetIntField(metrics, gFontMetricsInt_bottom, SkScalarCeilToInt(skmetrics.fBottom));
env->SetIntField(metrics, gFontMetricsInt_leading, leading);
}
return descent - ascent + leading;
}
///////////////////////////////////////////////////////////////////////////////////////////
jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, skia::BitmapRegionDecoder* 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$TransferParameters"));
gTransferParameters_constructorMethodID = GetMethodIDOrDie(env, gTransferParameters_class,
"<init>", "(DDDDDDD)V");
gFontMetrics_class = FindClassOrDie(env, "android/graphics/Paint$FontMetrics");
gFontMetrics_class = MakeGlobalRefOrDie(env, gFontMetrics_class);
gFontMetrics_top = GetFieldIDOrDie(env, gFontMetrics_class, "top", "F");
gFontMetrics_ascent = GetFieldIDOrDie(env, gFontMetrics_class, "ascent", "F");
gFontMetrics_descent = GetFieldIDOrDie(env, gFontMetrics_class, "descent", "F");
gFontMetrics_bottom = GetFieldIDOrDie(env, gFontMetrics_class, "bottom", "F");
gFontMetrics_leading = GetFieldIDOrDie(env, gFontMetrics_class, "leading", "F");
gFontMetricsInt_class = FindClassOrDie(env, "android/graphics/Paint$FontMetricsInt");
gFontMetricsInt_class = MakeGlobalRefOrDie(env, gFontMetricsInt_class);
gFontMetricsInt_top = GetFieldIDOrDie(env, gFontMetricsInt_class, "top", "I");
gFontMetricsInt_ascent = GetFieldIDOrDie(env, gFontMetricsInt_class, "ascent", "I");
gFontMetricsInt_descent = GetFieldIDOrDie(env, gFontMetricsInt_class, "descent", "I");
gFontMetricsInt_bottom = GetFieldIDOrDie(env, gFontMetricsInt_class, "bottom", "I");
gFontMetricsInt_leading = GetFieldIDOrDie(env, gFontMetricsInt_class, "leading", "I");
return 0;
}
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