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#define LOG_TAG "GraphicsJNI"
#include <unistd.h>
#include <sys/mman.h>
#include "jni.h"
#include "JNIHelp.h"
#include "GraphicsJNI.h"
#include "SkCanvas.h"
#include "SkDevice.h"
#include "SkMath.h"
#include "SkRegion.h"
#include <android_runtime/AndroidRuntime.h>
#include <cutils/ashmem.h>
#include <hwui/Canvas.h>
#include <Caches.h>
#include <TextureCache.h>
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) {
SkASSERT(env);
if (array) {
fLen = env->GetArrayLength(array);
if (fLen < minLength) {
sk_throw();
}
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) {
SkASSERT(env);
if (array) {
fLen = env->GetArrayLength(array);
if (fLen < minLength) {
sk_throw();
}
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) {
SkASSERT(env);
if (array) {
fLen = env->GetArrayLength(array);
if (fLen < minLength) {
sk_throw();
}
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) {
SkASSERT(env);
if (array) {
fLen = env->GetArrayLength(array);
if (fLen < minLength) {
sk_throw();
}
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 gBitmap_class;
static jfieldID gBitmap_nativePtr;
static jmethodID gBitmap_constructorMethodID;
static jmethodID gBitmap_reinitMethodID;
static jmethodID gBitmap_getAllocationByteCountMethodID;
static jclass gBitmapConfig_class;
static jfieldID gBitmapConfig_nativeInstanceID;
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;
///////////////////////////////////////////////////////////////////////////////
void GraphicsJNI::get_jrect(JNIEnv* env, jobject obj, int* L, int* T, int* R, int* B)
{
SkASSERT(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)
{
SkASSERT(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)
{
SkASSERT(env->IsInstanceOf(obj, gRect_class));
ir->set(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)
{
SkASSERT(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)
{
SkASSERT(env->IsInstanceOf(obj, gRectF_class));
r->set(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)
{
SkASSERT(env->IsInstanceOf(obj, gRect_class));
r->set(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)
{
SkASSERT(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)
{
SkASSERT(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)
{
SkASSERT(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)
{
SkASSERT(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)
{
SkASSERT(env->IsInstanceOf(obj, gPointF_class));
env->SetFloatField(obj, gPointF_xFieldID, SkScalarToFloat(r.fX));
env->SetFloatField(obj, gPointF_yFieldID, SkScalarToFloat(r.fY));
}
// This enum must keep these int values, to match the int values
// in the java Bitmap.Config enum.
enum LegacyBitmapConfig {
kNo_LegacyBitmapConfig = 0,
kA8_LegacyBitmapConfig = 1,
kIndex8_LegacyBitmapConfig = 2,
kRGB_565_LegacyBitmapConfig = 3,
kARGB_4444_LegacyBitmapConfig = 4,
kARGB_8888_LegacyBitmapConfig = 5,
kLastEnum_LegacyBitmapConfig = kARGB_8888_LegacyBitmapConfig
};
jint GraphicsJNI::colorTypeToLegacyBitmapConfig(SkColorType colorType) {
switch (colorType) {
case kN32_SkColorType:
return kARGB_8888_LegacyBitmapConfig;
case kARGB_4444_SkColorType:
return kARGB_4444_LegacyBitmapConfig;
case kRGB_565_SkColorType:
return kRGB_565_LegacyBitmapConfig;
case kIndex_8_SkColorType:
return kIndex8_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,
kIndex_8_SkColorType,
kRGB_565_SkColorType,
kARGB_4444_SkColorType,
kN32_SkColorType
};
if (legacyConfig < 0 || legacyConfig > kLastEnum_LegacyBitmapConfig) {
legacyConfig = kNo_LegacyBitmapConfig;
}
return static_cast<SkColorType>(gConfig2ColorType[legacyConfig]);
}
android::Bitmap* GraphicsJNI::getBitmap(JNIEnv* env, jobject bitmap) {
SkASSERT(env);
SkASSERT(bitmap);
SkASSERT(env->IsInstanceOf(bitmap, gBitmap_class));
jlong bitmapHandle = env->GetLongField(bitmap, gBitmap_nativePtr);
android::Bitmap* b = reinterpret_cast<android::Bitmap*>(bitmapHandle);
SkASSERT(b);
return b;
}
void GraphicsJNI::getSkBitmap(JNIEnv* env, jobject bitmap, SkBitmap* outBitmap) {
getBitmap(env, bitmap)->getSkBitmap(outBitmap);
}
SkPixelRef* GraphicsJNI::refSkPixelRef(JNIEnv* env, jobject bitmap) {
return getBitmap(env, bitmap)->refPixelRef();
}
SkColorType GraphicsJNI::getNativeBitmapColorType(JNIEnv* env, jobject jconfig) {
SkASSERT(env);
if (NULL == jconfig) {
return kUnknown_SkColorType;
}
SkASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class));
int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID);
return legacyBitmapConfigToColorType(c);
}
android::Canvas* GraphicsJNI::getNativeCanvas(JNIEnv* env, jobject canvas) {
SkASSERT(env);
SkASSERT(canvas);
SkASSERT(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)
{
SkASSERT(env);
SkASSERT(region);
SkASSERT(env->IsInstanceOf(region, gRegion_class));
jlong regionHandle = env->GetLongField(region, gRegion_nativeInstanceID);
SkRegion* r = reinterpret_cast<SkRegion*>(regionHandle);
SkASSERT(r);
return r;
}
///////////////////////////////////////////////////////////////////////////////////////////
// Assert that bitmap's SkAlphaType is consistent with isPremultiplied.
static void assert_premultiplied(const SkImageInfo& info, bool isPremultiplied) {
// kOpaque_SkAlphaType and kIgnore_SkAlphaType mean that isPremultiplied is
// irrelevant. This just tests to ensure that the SkAlphaType is not
// opposite of isPremultiplied.
if (isPremultiplied) {
SkASSERT(info.alphaType() != kUnpremul_SkAlphaType);
} else {
SkASSERT(info.alphaType() != kPremul_SkAlphaType);
}
}
jobject GraphicsJNI::createBitmap(JNIEnv* env, android::Bitmap* bitmap,
int bitmapCreateFlags, jbyteArray ninePatchChunk, jobject ninePatchInsets,
int density) {
bool isMutable = bitmapCreateFlags & kBitmapCreateFlag_Mutable;
bool isPremultiplied = bitmapCreateFlags & kBitmapCreateFlag_Premultiplied;
// The caller needs to have already set the alpha type properly, so the
// native SkBitmap stays in sync with the Java Bitmap.
assert_premultiplied(bitmap->info(), isPremultiplied);
jobject obj = env->NewObject(gBitmap_class, gBitmap_constructorMethodID,
reinterpret_cast<jlong>(bitmap), bitmap->javaByteArray(),
bitmap->width(), bitmap->height(), density, isMutable, isPremultiplied,
ninePatchChunk, ninePatchInsets);
hasException(env); // For the side effect of logging.
return obj;
}
void GraphicsJNI::reinitBitmap(JNIEnv* env, jobject javaBitmap, const SkImageInfo& info,
bool isPremultiplied)
{
// The caller needs to have already set the alpha type properly, so the
// native SkBitmap stays in sync with the Java Bitmap.
assert_premultiplied(info, isPremultiplied);
env->CallVoidMethod(javaBitmap, gBitmap_reinitMethodID,
info.width(), info.height(), isPremultiplied);
}
int GraphicsJNI::getBitmapAllocationByteCount(JNIEnv* env, jobject javaBitmap)
{
return env->CallIntMethod(javaBitmap, gBitmap_getAllocationByteCountMethodID);
}
jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap)
{
SkASSERT(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)
{
SkASSERT(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;
}
static JNIEnv* vm2env(JavaVM* vm)
{
JNIEnv* env = NULL;
if (vm->GetEnv((void**)&env, JNI_VERSION_1_4) != JNI_OK || NULL == env)
{
SkDebugf("------- [%p] vm->GetEnv() failed\n", vm);
sk_throw();
}
return env;
}
///////////////////////////////////////////////////////////////////////////////
static bool computeAllocationSize(const SkBitmap& bitmap, size_t* size) {
int32_t rowBytes32 = SkToS32(bitmap.rowBytes());
int64_t bigSize = (int64_t)bitmap.height() * rowBytes32;
if (rowBytes32 < 0 || !sk_64_isS32(bigSize)) {
return false; // allocation will be too large
}
*size = sk_64_asS32(bigSize);
return true;
}
android::Bitmap* GraphicsJNI::allocateJavaPixelRef(JNIEnv* env, SkBitmap* bitmap,
SkColorTable* ctable) {
const SkImageInfo& info = bitmap->info();
if (info.colorType() == kUnknown_SkColorType) {
doThrowIAE(env, "unknown bitmap configuration");
return NULL;
}
size_t size;
if (!computeAllocationSize(*bitmap, &size)) {
return NULL;
}
// we must respect the rowBytes value already set on the bitmap instead of
// attempting to compute our own.
const size_t rowBytes = bitmap->rowBytes();
jbyteArray arrayObj = (jbyteArray) env->CallObjectMethod(gVMRuntime,
gVMRuntime_newNonMovableArray,
gByte_class, size);
if (env->ExceptionCheck() != 0) {
return NULL;
}
SkASSERT(arrayObj);
jbyte* addr = (jbyte*) env->CallLongMethod(gVMRuntime, gVMRuntime_addressOf, arrayObj);
if (env->ExceptionCheck() != 0) {
return NULL;
}
SkASSERT(addr);
android::Bitmap* wrapper = new android::Bitmap(env, arrayObj, (void*) addr,
info, rowBytes, ctable);
wrapper->getSkBitmap(bitmap);
// since we're already allocated, we lockPixels right away
// HeapAllocator behaves this way too
bitmap->lockPixels();
return wrapper;
}
struct AndroidPixelRefContext {
int32_t stableID;
};
static void allocatePixelsReleaseProc(void* ptr, void* ctx) {
AndroidPixelRefContext* context = (AndroidPixelRefContext*)ctx;
if (android::uirenderer::Caches::hasInstance()) {
android::uirenderer::Caches::getInstance().textureCache.releaseTexture(context->stableID);
}
sk_free(ptr);
delete context;
}
bool GraphicsJNI::allocatePixels(JNIEnv* env, SkBitmap* bitmap, SkColorTable* ctable) {
const SkImageInfo& info = bitmap->info();
if (info.colorType() == kUnknown_SkColorType) {
doThrowIAE(env, "unknown bitmap configuration");
return NULL;
}
size_t size;
if (!computeAllocationSize(*bitmap, &size)) {
return false;
}
// we must respect the rowBytes value already set on the bitmap instead of
// attempting to compute our own.
const size_t rowBytes = bitmap->rowBytes();
void* addr = sk_malloc_flags(size, 0);
if (NULL == addr) {
return false;
}
AndroidPixelRefContext* context = new AndroidPixelRefContext;
SkMallocPixelRef* pr = SkMallocPixelRef::NewWithProc(info, rowBytes, ctable, addr,
&allocatePixelsReleaseProc, context);
if (!pr) {
delete context;
return false;
}
// set the stableID in the context so that it can be used later in
// allocatePixelsReleaseProc to remove the texture from the cache.
context->stableID = pr->getStableID();
bitmap->setPixelRef(pr)->unref();
// since we're already allocated, we can lockPixels right away
bitmap->lockPixels();
return true;
}
android::Bitmap* GraphicsJNI::allocateAshmemPixelRef(JNIEnv* env, SkBitmap* bitmap,
SkColorTable* ctable) {
int fd;
const SkImageInfo& info = bitmap->info();
if (info.colorType() == kUnknown_SkColorType) {
doThrowIAE(env, "unknown bitmap configuration");
return nullptr;
}
size_t size;
if (!computeAllocationSize(*bitmap, &size)) {
return nullptr;
}
// we must respect the rowBytes value already set on the bitmap instead of
// attempting to compute our own.
const size_t rowBytes = bitmap->rowBytes();
// Create new ashmem region with read/write priv
fd = ashmem_create_region("bitmap", size);
if (fd < 0) {
return nullptr;
}
void* addr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (addr == MAP_FAILED) {
close(fd);
return nullptr;
}
if (ashmem_set_prot_region(fd, PROT_READ) < 0) {
munmap(addr, size);
close(fd);
return nullptr;
}
android::Bitmap* wrapper = new android::Bitmap(addr, fd, size, info, rowBytes, ctable);
wrapper->getSkBitmap(bitmap);
// since we're already allocated, we lockPixels right away
// HeapAllocator behaves this way too
bitmap->lockPixels();
return wrapper;
}
android::Bitmap* GraphicsJNI::mapAshmemPixelRef(JNIEnv* env, SkBitmap* bitmap,
SkColorTable* ctable, int fd, void* addr, size_t size, bool readOnly) {
const SkImageInfo& info = bitmap->info();
if (info.colorType() == kUnknown_SkColorType) {
doThrowIAE(env, "unknown bitmap configuration");
return nullptr;
}
if (!addr) {
// Map existing ashmem region if not already mapped.
int flags = readOnly ? (PROT_READ) : (PROT_READ | PROT_WRITE);
size = ashmem_get_size_region(fd);
addr = mmap(NULL, size, flags, MAP_SHARED, fd, 0);
if (addr == MAP_FAILED) {
return nullptr;
}
}
// we must respect the rowBytes value already set on the bitmap instead of
// attempting to compute our own.
const size_t rowBytes = bitmap->rowBytes();
android::Bitmap* wrapper = new android::Bitmap(addr, fd, size, info, rowBytes, ctable);
wrapper->getSkBitmap(bitmap);
if (readOnly) {
bitmap->pixelRef()->setImmutable();
}
// since we're already allocated, we lockPixels right away
// HeapAllocator behaves this way too
bitmap->lockPixels();
return wrapper;
}
///////////////////////////////////////////////////////////////////////////////
JavaPixelAllocator::JavaPixelAllocator(JNIEnv* env) {
LOG_ALWAYS_FATAL_IF(env->GetJavaVM(&mJavaVM) != JNI_OK,
"env->GetJavaVM failed");
}
JavaPixelAllocator::~JavaPixelAllocator() {
if (mStorage) {
mStorage->detachFromJava();
}
}
bool JavaPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) {
JNIEnv* env = vm2env(mJavaVM);
mStorage = GraphicsJNI::allocateJavaPixelRef(env, bitmap, ctable);
return mStorage != nullptr;
}
////////////////////////////////////////////////////////////////////////////////
RecyclingClippingPixelAllocator::RecyclingClippingPixelAllocator(
android::Bitmap* recycledBitmap, size_t recycledBytes)
: mRecycledBitmap(recycledBitmap)
, mRecycledBytes(recycledBytes)
, mSkiaBitmap(nullptr)
, mNeedsCopy(false)
{}
RecyclingClippingPixelAllocator::~RecyclingClippingPixelAllocator() {}
bool RecyclingClippingPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) {
// 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 = SkTMax(bitmap->width(), mRecycledBitmap->info().width());
const int maxHeight = SkTMax(bitmap->height(), mRecycledBitmap->info().height());
const SkImageInfo maxInfo = bitmap->info().makeWH(maxWidth, maxHeight);
const size_t rowBytes = maxInfo.minRowBytes();
const size_t bytesNeeded = maxInfo.getSafeSize(rowBytes);
if (bytesNeeded <= mRecycledBytes) {
// Here we take advantage of reconfigure() to reset the rowBytes and ctable
// 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.
mRecycledBitmap->reconfigure(mRecycledBitmap->info(), rowBytes, ctable);
// This call will give the bitmap the same pixelRef as mRecycledBitmap.
bitmap->setPixelRef(mRecycledBitmap->refPixelRef())->unref();
// Make sure that the recycled bitmap has the correct alpha type.
mRecycledBitmap->setAlphaType(bitmap->alphaType());
bitmap->notifyPixelsChanged();
bitmap->lockPixels();
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, ctable);
}
void RecyclingClippingPixelAllocator::copyIfNecessary() {
if (mNeedsCopy) {
SkPixelRef* recycledPixels = mRecycledBitmap->refPixelRef();
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");
}
AshmemPixelAllocator::~AshmemPixelAllocator() {
if (mStorage) {
mStorage->detachFromJava();
}
}
bool AshmemPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) {
JNIEnv* env = vm2env(mJavaVM);
mStorage = GraphicsJNI::allocateAshmemPixelRef(env, bitmap, ctable);
return mStorage != nullptr;
}
////////////////////////////////////////////////////////////////////////////////
static jclass make_globalref(JNIEnv* env, const char classname[])
{
jclass c = env->FindClass(classname);
SkASSERT(c);
return (jclass) env->NewGlobalRef(c);
}
static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz,
const char fieldname[], const char type[])
{
jfieldID id = env->GetFieldID(clazz, fieldname, type);
SkASSERT(id);
return id;
}
int register_android_graphics_Graphics(JNIEnv* env)
{
jmethodID m;
jclass c;
gRect_class = make_globalref(env, "android/graphics/Rect");
gRect_leftFieldID = getFieldIDCheck(env, gRect_class, "left", "I");
gRect_topFieldID = getFieldIDCheck(env, gRect_class, "top", "I");
gRect_rightFieldID = getFieldIDCheck(env, gRect_class, "right", "I");
gRect_bottomFieldID = getFieldIDCheck(env, gRect_class, "bottom", "I");
gRectF_class = make_globalref(env, "android/graphics/RectF");
gRectF_leftFieldID = getFieldIDCheck(env, gRectF_class, "left", "F");
gRectF_topFieldID = getFieldIDCheck(env, gRectF_class, "top", "F");
gRectF_rightFieldID = getFieldIDCheck(env, gRectF_class, "right", "F");
gRectF_bottomFieldID = getFieldIDCheck(env, gRectF_class, "bottom", "F");
gPoint_class = make_globalref(env, "android/graphics/Point");
gPoint_xFieldID = getFieldIDCheck(env, gPoint_class, "x", "I");
gPoint_yFieldID = getFieldIDCheck(env, gPoint_class, "y", "I");
gPointF_class = make_globalref(env, "android/graphics/PointF");
gPointF_xFieldID = getFieldIDCheck(env, gPointF_class, "x", "F");
gPointF_yFieldID = getFieldIDCheck(env, gPointF_class, "y", "F");
gBitmap_class = make_globalref(env, "android/graphics/Bitmap");
gBitmap_nativePtr = getFieldIDCheck(env, gBitmap_class, "mNativePtr", "J");
gBitmap_constructorMethodID = env->GetMethodID(gBitmap_class, "<init>", "(J[BIIIZZ[BLandroid/graphics/NinePatch$InsetStruct;)V");
gBitmap_reinitMethodID = env->GetMethodID(gBitmap_class, "reinit", "(IIZ)V");
gBitmap_getAllocationByteCountMethodID = env->GetMethodID(gBitmap_class, "getAllocationByteCount", "()I");
gBitmapRegionDecoder_class = make_globalref(env, "android/graphics/BitmapRegionDecoder");
gBitmapRegionDecoder_constructorMethodID = env->GetMethodID(gBitmapRegionDecoder_class, "<init>", "(J)V");
gBitmapConfig_class = make_globalref(env, "android/graphics/Bitmap$Config");
gBitmapConfig_nativeInstanceID = getFieldIDCheck(env, gBitmapConfig_class,
"nativeInt", "I");
gCanvas_class = make_globalref(env, "android/graphics/Canvas");
gCanvas_nativeInstanceID = getFieldIDCheck(env, gCanvas_class, "mNativeCanvasWrapper", "J");
gPicture_class = make_globalref(env, "android/graphics/Picture");
gPicture_nativeInstanceID = getFieldIDCheck(env, gPicture_class, "mNativePicture", "J");
gRegion_class = make_globalref(env, "android/graphics/Region");
gRegion_nativeInstanceID = getFieldIDCheck(env, gRegion_class, "mNativeRegion", "J");
gRegion_constructorMethodID = env->GetMethodID(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 = make_globalref(env, "dalvik/system/VMRuntime");
m = env->GetStaticMethodID(gVMRuntime_class, "getRuntime", "()Ldalvik/system/VMRuntime;");
gVMRuntime = env->NewGlobalRef(env->CallStaticObjectMethod(gVMRuntime_class, m));
gVMRuntime_newNonMovableArray = env->GetMethodID(gVMRuntime_class, "newNonMovableArray",
"(Ljava/lang/Class;I)Ljava/lang/Object;");
gVMRuntime_addressOf = env->GetMethodID(gVMRuntime_class, "addressOf", "(Ljava/lang/Object;)J");
return 0;
}
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