| #define LOG_TAG "GraphicsJNI" |
| |
| #include <unistd.h> |
| #include <sys/mman.h> |
| |
| #include "jni.h" |
| #include "JNIHelp.h" |
| #include "GraphicsJNI.h" |
| |
| #include "Canvas.h" |
| #include "SkCanvas.h" |
| #include "SkDevice.h" |
| #include "SkMath.h" |
| #include "SkRegion.h" |
| #include <android_runtime/AndroidRuntime.h> |
| #include <cutils/ashmem.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.fColorType == 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.fColorType == 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.fColorType == 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, 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, bool readOnly) { |
| const SkImageInfo& info = bitmap->info(); |
| if (info.fColorType == 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); |
| addr = mmap(NULL, ashmem_get_size_region(fd), 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, 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; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| 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; |
| } |
