655 lines
21 KiB
C++
655 lines
21 KiB
C++
#define LOG_TAG "GraphicsJNI"
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#include "jni.h"
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#include "GraphicsJNI.h"
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#include "SkPicture.h"
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#include "SkRegion.h"
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#include <android_runtime/AndroidRuntime.h>
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//#define REPORT_SIZE_TO_JVM
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//#define TRACK_LOCK_COUNT
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void doThrow(JNIEnv* env, const char* exc, const char* msg) {
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// don't throw a new exception if we already have one pending
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if (env->ExceptionCheck() == JNI_FALSE) {
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jclass npeClazz;
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npeClazz = env->FindClass(exc);
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LOG_FATAL_IF(npeClazz == NULL, "Unable to find class %s", exc);
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env->ThrowNew(npeClazz, msg);
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}
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}
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void doThrowNPE(JNIEnv* env) {
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doThrow(env, "java/lang/NullPointerException");
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}
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void doThrowAIOOBE(JNIEnv* env) {
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doThrow(env, "java/lang/ArrayIndexOutOfBoundsException");
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}
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void doThrowRE(JNIEnv* env, const char* msg) {
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doThrow(env, "java/lang/RuntimeException", msg);
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}
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void doThrowIAE(JNIEnv* env, const char* msg) {
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doThrow(env, "java/lang/IllegalArgumentException", msg);
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}
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void doThrowISE(JNIEnv* env, const char* msg) {
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doThrow(env, "java/lang/IllegalStateException", msg);
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}
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void doThrowOOME(JNIEnv* env, const char* msg) {
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doThrow(env, "java/lang/OutOfMemoryError", msg);
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}
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void doThrowIOE(JNIEnv* env, const char* msg) {
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doThrow(env, "java/io/IOException", msg);
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}
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bool GraphicsJNI::hasException(JNIEnv *env) {
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if (env->ExceptionCheck() != 0) {
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LOGE("*** Uncaught exception returned from Java call!\n");
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env->ExceptionDescribe();
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return true;
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}
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return false;
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}
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///////////////////////////////////////////////////////////////////////////////
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AutoJavaFloatArray::AutoJavaFloatArray(JNIEnv* env, jfloatArray array,
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int minLength, JNIAccess access)
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: fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
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SkASSERT(env);
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if (array) {
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fLen = env->GetArrayLength(array);
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if (fLen < minLength) {
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sk_throw();
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}
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fPtr = env->GetFloatArrayElements(array, NULL);
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}
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fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0;
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}
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AutoJavaFloatArray::~AutoJavaFloatArray() {
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if (fPtr) {
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fEnv->ReleaseFloatArrayElements(fArray, fPtr, fReleaseMode);
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}
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}
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AutoJavaIntArray::AutoJavaIntArray(JNIEnv* env, jintArray array,
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int minLength)
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: fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
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SkASSERT(env);
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if (array) {
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fLen = env->GetArrayLength(array);
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if (fLen < minLength) {
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sk_throw();
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}
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fPtr = env->GetIntArrayElements(array, NULL);
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}
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}
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AutoJavaIntArray::~AutoJavaIntArray() {
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if (fPtr) {
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fEnv->ReleaseIntArrayElements(fArray, fPtr, 0);
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}
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}
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AutoJavaShortArray::AutoJavaShortArray(JNIEnv* env, jshortArray array,
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int minLength, JNIAccess access)
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: fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
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SkASSERT(env);
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if (array) {
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fLen = env->GetArrayLength(array);
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if (fLen < minLength) {
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sk_throw();
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}
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fPtr = env->GetShortArrayElements(array, NULL);
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}
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fReleaseMode = (access == kRO_JNIAccess) ? JNI_ABORT : 0;
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}
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AutoJavaShortArray::~AutoJavaShortArray() {
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if (fPtr) {
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fEnv->ReleaseShortArrayElements(fArray, fPtr, fReleaseMode);
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}
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}
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AutoJavaByteArray::AutoJavaByteArray(JNIEnv* env, jbyteArray array,
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int minLength)
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: fEnv(env), fArray(array), fPtr(NULL), fLen(0) {
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SkASSERT(env);
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if (array) {
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fLen = env->GetArrayLength(array);
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if (fLen < minLength) {
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sk_throw();
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}
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fPtr = env->GetByteArrayElements(array, NULL);
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}
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}
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AutoJavaByteArray::~AutoJavaByteArray() {
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if (fPtr) {
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fEnv->ReleaseByteArrayElements(fArray, fPtr, 0);
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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static jclass gRect_class;
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static jfieldID gRect_leftFieldID;
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static jfieldID gRect_topFieldID;
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static jfieldID gRect_rightFieldID;
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static jfieldID gRect_bottomFieldID;
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static jclass gRectF_class;
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static jfieldID gRectF_leftFieldID;
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static jfieldID gRectF_topFieldID;
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static jfieldID gRectF_rightFieldID;
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static jfieldID gRectF_bottomFieldID;
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static jclass gPoint_class;
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static jfieldID gPoint_xFieldID;
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static jfieldID gPoint_yFieldID;
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static jclass gPointF_class;
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static jfieldID gPointF_xFieldID;
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static jfieldID gPointF_yFieldID;
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static jclass gBitmap_class;
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static jfieldID gBitmap_nativeInstanceID;
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static jmethodID gBitmap_constructorMethodID;
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static jmethodID gBitmap_allocBufferMethodID;
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static jclass gBitmapConfig_class;
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static jfieldID gBitmapConfig_nativeInstanceID;
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static jclass gBitmapRegionDecoder_class;
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static jmethodID gBitmapRegionDecoder_constructorMethodID;
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static jclass gCanvas_class;
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static jfieldID gCanvas_nativeInstanceID;
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static jclass gPaint_class;
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static jfieldID gPaint_nativeInstanceID;
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static jclass gPicture_class;
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static jfieldID gPicture_nativeInstanceID;
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static jclass gRegion_class;
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static jfieldID gRegion_nativeInstanceID;
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static jmethodID gRegion_constructorMethodID;
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static jobject gVMRuntime_singleton;
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static jmethodID gVMRuntime_trackExternalAllocationMethodID;
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static jmethodID gVMRuntime_trackExternalFreeMethodID;
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///////////////////////////////////////////////////////////////////////////////
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void GraphicsJNI::get_jrect(JNIEnv* env, jobject obj, int* L, int* T, int* R, int* B)
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{
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SkASSERT(env->IsInstanceOf(obj, gRect_class));
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*L = env->GetIntField(obj, gRect_leftFieldID);
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*T = env->GetIntField(obj, gRect_topFieldID);
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*R = env->GetIntField(obj, gRect_rightFieldID);
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*B = env->GetIntField(obj, gRect_bottomFieldID);
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}
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void GraphicsJNI::set_jrect(JNIEnv* env, jobject obj, int L, int T, int R, int B)
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{
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SkASSERT(env->IsInstanceOf(obj, gRect_class));
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env->SetIntField(obj, gRect_leftFieldID, L);
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env->SetIntField(obj, gRect_topFieldID, T);
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env->SetIntField(obj, gRect_rightFieldID, R);
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env->SetIntField(obj, gRect_bottomFieldID, B);
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}
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SkIRect* GraphicsJNI::jrect_to_irect(JNIEnv* env, jobject obj, SkIRect* ir)
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{
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SkASSERT(env->IsInstanceOf(obj, gRect_class));
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ir->set(env->GetIntField(obj, gRect_leftFieldID),
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env->GetIntField(obj, gRect_topFieldID),
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env->GetIntField(obj, gRect_rightFieldID),
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env->GetIntField(obj, gRect_bottomFieldID));
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return ir;
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}
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void GraphicsJNI::irect_to_jrect(const SkIRect& ir, JNIEnv* env, jobject obj)
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{
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SkASSERT(env->IsInstanceOf(obj, gRect_class));
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env->SetIntField(obj, gRect_leftFieldID, ir.fLeft);
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env->SetIntField(obj, gRect_topFieldID, ir.fTop);
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env->SetIntField(obj, gRect_rightFieldID, ir.fRight);
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env->SetIntField(obj, gRect_bottomFieldID, ir.fBottom);
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}
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SkRect* GraphicsJNI::jrectf_to_rect(JNIEnv* env, jobject obj, SkRect* r)
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{
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SkASSERT(env->IsInstanceOf(obj, gRectF_class));
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r->set(SkFloatToScalar(env->GetFloatField(obj, gRectF_leftFieldID)),
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SkFloatToScalar(env->GetFloatField(obj, gRectF_topFieldID)),
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SkFloatToScalar(env->GetFloatField(obj, gRectF_rightFieldID)),
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SkFloatToScalar(env->GetFloatField(obj, gRectF_bottomFieldID)));
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return r;
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}
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SkRect* GraphicsJNI::jrect_to_rect(JNIEnv* env, jobject obj, SkRect* r)
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{
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SkASSERT(env->IsInstanceOf(obj, gRect_class));
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r->set(SkIntToScalar(env->GetIntField(obj, gRect_leftFieldID)),
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SkIntToScalar(env->GetIntField(obj, gRect_topFieldID)),
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SkIntToScalar(env->GetIntField(obj, gRect_rightFieldID)),
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SkIntToScalar(env->GetIntField(obj, gRect_bottomFieldID)));
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return r;
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}
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void GraphicsJNI::rect_to_jrectf(const SkRect& r, JNIEnv* env, jobject obj)
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{
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SkASSERT(env->IsInstanceOf(obj, gRectF_class));
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env->SetFloatField(obj, gRectF_leftFieldID, SkScalarToFloat(r.fLeft));
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env->SetFloatField(obj, gRectF_topFieldID, SkScalarToFloat(r.fTop));
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env->SetFloatField(obj, gRectF_rightFieldID, SkScalarToFloat(r.fRight));
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env->SetFloatField(obj, gRectF_bottomFieldID, SkScalarToFloat(r.fBottom));
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}
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SkIPoint* GraphicsJNI::jpoint_to_ipoint(JNIEnv* env, jobject obj, SkIPoint* point)
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{
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SkASSERT(env->IsInstanceOf(obj, gPoint_class));
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point->set(env->GetIntField(obj, gPoint_xFieldID),
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env->GetIntField(obj, gPoint_yFieldID));
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return point;
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}
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void GraphicsJNI::ipoint_to_jpoint(const SkIPoint& ir, JNIEnv* env, jobject obj)
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{
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SkASSERT(env->IsInstanceOf(obj, gPoint_class));
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env->SetIntField(obj, gPoint_xFieldID, ir.fX);
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env->SetIntField(obj, gPoint_yFieldID, ir.fY);
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}
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SkPoint* GraphicsJNI::jpointf_to_point(JNIEnv* env, jobject obj, SkPoint* point)
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{
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SkASSERT(env->IsInstanceOf(obj, gPointF_class));
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point->set(SkFloatToScalar(env->GetIntField(obj, gPointF_xFieldID)),
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SkFloatToScalar(env->GetIntField(obj, gPointF_yFieldID)));
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return point;
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}
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void GraphicsJNI::point_to_jpointf(const SkPoint& r, JNIEnv* env, jobject obj)
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{
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SkASSERT(env->IsInstanceOf(obj, gPointF_class));
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env->SetFloatField(obj, gPointF_xFieldID, SkScalarToFloat(r.fX));
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env->SetFloatField(obj, gPointF_yFieldID, SkScalarToFloat(r.fY));
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}
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SkBitmap* GraphicsJNI::getNativeBitmap(JNIEnv* env, jobject bitmap) {
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SkASSERT(env);
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SkASSERT(bitmap);
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SkASSERT(env->IsInstanceOf(bitmap, gBitmap_class));
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SkBitmap* b = (SkBitmap*)env->GetIntField(bitmap, gBitmap_nativeInstanceID);
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SkASSERT(b);
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return b;
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}
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SkBitmap::Config GraphicsJNI::getNativeBitmapConfig(JNIEnv* env,
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jobject jconfig) {
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SkASSERT(env);
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if (NULL == jconfig) {
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return SkBitmap::kNo_Config;
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}
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SkASSERT(env->IsInstanceOf(jconfig, gBitmapConfig_class));
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int c = env->GetIntField(jconfig, gBitmapConfig_nativeInstanceID);
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if (c < 0 || c >= SkBitmap::kConfigCount) {
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c = SkBitmap::kNo_Config;
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}
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return static_cast<SkBitmap::Config>(c);
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}
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SkCanvas* GraphicsJNI::getNativeCanvas(JNIEnv* env, jobject canvas) {
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SkASSERT(env);
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SkASSERT(canvas);
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SkASSERT(env->IsInstanceOf(canvas, gCanvas_class));
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SkCanvas* c = (SkCanvas*)env->GetIntField(canvas, gCanvas_nativeInstanceID);
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SkASSERT(c);
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return c;
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}
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SkPaint* GraphicsJNI::getNativePaint(JNIEnv* env, jobject paint) {
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SkASSERT(env);
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SkASSERT(paint);
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SkASSERT(env->IsInstanceOf(paint, gPaint_class));
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SkPaint* p = (SkPaint*)env->GetIntField(paint, gPaint_nativeInstanceID);
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SkASSERT(p);
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return p;
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}
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SkPicture* GraphicsJNI::getNativePicture(JNIEnv* env, jobject picture)
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{
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SkASSERT(env);
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SkASSERT(picture);
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SkASSERT(env->IsInstanceOf(picture, gPicture_class));
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SkPicture* p = (SkPicture*)env->GetIntField(picture, gPicture_nativeInstanceID);
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SkASSERT(p);
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return p;
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}
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SkRegion* GraphicsJNI::getNativeRegion(JNIEnv* env, jobject region)
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{
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SkASSERT(env);
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SkASSERT(region);
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SkASSERT(env->IsInstanceOf(region, gRegion_class));
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SkRegion* r = (SkRegion*)env->GetIntField(region, gRegion_nativeInstanceID);
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SkASSERT(r);
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return r;
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}
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///////////////////////////////////////////////////////////////////////////////////////////
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jobject GraphicsJNI::createBitmap(JNIEnv* env, SkBitmap* bitmap, bool isMutable,
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jbyteArray ninepatch, int density)
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{
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SkASSERT(bitmap != NULL);
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SkASSERT(NULL != bitmap->pixelRef());
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jobject obj = env->AllocObject(gBitmap_class);
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if (obj) {
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env->CallVoidMethod(obj, gBitmap_constructorMethodID,
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(jint)bitmap, isMutable, ninepatch, density);
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if (hasException(env)) {
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obj = NULL;
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}
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}
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return obj;
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}
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jobject GraphicsJNI::createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap)
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{
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SkASSERT(bitmap != NULL);
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jobject obj = env->AllocObject(gBitmapRegionDecoder_class);
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if (hasException(env)) {
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obj = NULL;
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return obj;
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}
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if (obj) {
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env->CallVoidMethod(obj, gBitmapRegionDecoder_constructorMethodID, (jint)bitmap);
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if (hasException(env)) {
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obj = NULL;
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}
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}
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return obj;
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}
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jobject GraphicsJNI::createRegion(JNIEnv* env, SkRegion* region)
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{
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SkASSERT(region != NULL);
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jobject obj = env->AllocObject(gRegion_class);
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if (obj) {
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env->CallVoidMethod(obj, gRegion_constructorMethodID, (jint)region, 0);
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if (hasException(env)) {
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obj = NULL;
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}
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}
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return obj;
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}
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#include "SkPixelRef.h"
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static JNIEnv* vm2env(JavaVM* vm)
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{
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JNIEnv* env = NULL;
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if (vm->GetEnv((void**)&env, JNI_VERSION_1_4) != JNI_OK || NULL == env)
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{
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SkDebugf("------- [%p] vm->GetEnv() failed\n", vm);
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sk_throw();
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}
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return env;
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}
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#ifdef TRACK_LOCK_COUNT
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static int gLockCount;
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#endif
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///////////////////////////////////////////////////////////////////////////////
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#include "SkMallocPixelRef.h"
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/* Extend SkMallocPixelRef to inform the VM when we free up the storage
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*/
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class AndroidPixelRef : public SkMallocPixelRef {
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public:
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/** Allocate the specified buffer for pixels. The memory is freed when the
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last owner of this pixelref is gone. Our caller has already informed
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the VM of our allocation.
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*/
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AndroidPixelRef(JNIEnv* env, void* storage, size_t size,
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SkColorTable* ctable) : SkMallocPixelRef(storage, size, ctable) {
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SkASSERT(storage);
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SkASSERT(env);
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if (env->GetJavaVM(&fVM) != JNI_OK) {
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SkDebugf("------ [%p] env->GetJavaVM failed\n", env);
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sk_throw();
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}
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}
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virtual ~AndroidPixelRef() {
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JNIEnv* env = vm2env(fVM);
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// SkDebugf("-------------- inform VM we're releasing %d bytes\n", this->getSize());
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jlong jsize = this->getSize(); // the VM wants longs for the size
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env->CallVoidMethod(gVMRuntime_singleton,
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gVMRuntime_trackExternalFreeMethodID,
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jsize);
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if (GraphicsJNI::hasException(env)) {
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env->ExceptionClear();
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}
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}
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private:
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JavaVM* fVM;
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};
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bool GraphicsJNI::setJavaPixelRef(JNIEnv* env, SkBitmap* bitmap,
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SkColorTable* ctable, bool reportSizeToVM) {
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Sk64 size64 = bitmap->getSize64();
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if (size64.isNeg() || !size64.is32()) {
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doThrow(env, "java/lang/IllegalArgumentException",
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"bitmap size exceeds 32bits");
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return false;
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}
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size_t size = size64.get32();
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jlong jsize = size; // the VM wants longs for the size
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if (reportSizeToVM) {
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// SkDebugf("-------------- inform VM we've allocated %d bytes\n", size);
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bool r = env->CallBooleanMethod(gVMRuntime_singleton,
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gVMRuntime_trackExternalAllocationMethodID,
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jsize);
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if (GraphicsJNI::hasException(env)) {
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return false;
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}
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if (!r) {
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LOGE("VM won't let us allocate %zd bytes\n", size);
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doThrowOOME(env, "bitmap size exceeds VM budget");
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return false;
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}
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}
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// call the version of malloc that returns null on failure
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void* addr = sk_malloc_flags(size, 0);
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if (NULL == addr) {
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if (reportSizeToVM) {
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// SkDebugf("-------------- inform VM we're releasing %d bytes which we couldn't allocate\n", size);
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// we didn't actually allocate it, so inform the VM
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env->CallVoidMethod(gVMRuntime_singleton,
|
|
gVMRuntime_trackExternalFreeMethodID,
|
|
jsize);
|
|
if (!GraphicsJNI::hasException(env)) {
|
|
doThrowOOME(env, "bitmap size too large for malloc");
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
SkPixelRef* pr = reportSizeToVM ?
|
|
new AndroidPixelRef(env, addr, size, ctable) :
|
|
new SkMallocPixelRef(addr, size, ctable);
|
|
bitmap->setPixelRef(pr)->unref();
|
|
// since we're already allocated, we lockPixels right away
|
|
// HeapAllocator behaves this way too
|
|
bitmap->lockPixels();
|
|
return true;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
JavaPixelAllocator::JavaPixelAllocator(JNIEnv* env, bool reportSizeToVM)
|
|
: fReportSizeToVM(reportSizeToVM) {
|
|
if (env->GetJavaVM(&fVM) != JNI_OK) {
|
|
SkDebugf("------ [%p] env->GetJavaVM failed\n", env);
|
|
sk_throw();
|
|
}
|
|
}
|
|
|
|
bool JavaPixelAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) {
|
|
JNIEnv* env = vm2env(fVM);
|
|
return GraphicsJNI::setJavaPixelRef(env, bitmap, ctable, fReportSizeToVM);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
JavaMemoryUsageReporter::JavaMemoryUsageReporter(JNIEnv* env)
|
|
: fTotalSize(0) {
|
|
if (env->GetJavaVM(&fVM) != JNI_OK) {
|
|
SkDebugf("------ [%p] env->GetJavaVM failed\n", env);
|
|
sk_throw();
|
|
}
|
|
}
|
|
|
|
JavaMemoryUsageReporter::~JavaMemoryUsageReporter() {
|
|
JNIEnv* env = vm2env(fVM);
|
|
jlong jtotalSize = fTotalSize;
|
|
env->CallVoidMethod(gVMRuntime_singleton,
|
|
gVMRuntime_trackExternalFreeMethodID,
|
|
jtotalSize);
|
|
}
|
|
|
|
bool JavaMemoryUsageReporter::reportMemory(size_t memorySize) {
|
|
jlong jsize = memorySize; // the VM wants longs for the size
|
|
JNIEnv* env = vm2env(fVM);
|
|
bool r = env->CallBooleanMethod(gVMRuntime_singleton,
|
|
gVMRuntime_trackExternalAllocationMethodID,
|
|
jsize);
|
|
if (GraphicsJNI::hasException(env)) {
|
|
return false;
|
|
}
|
|
if (!r) {
|
|
LOGE("VM won't let us allocate %zd bytes\n", memorySize);
|
|
doThrowOOME(env, "bitmap size exceeds VM budget");
|
|
return false;
|
|
}
|
|
fTotalSize += memorySize;
|
|
return true;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
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_nativeInstanceID = getFieldIDCheck(env, gBitmap_class, "mNativeBitmap", "I");
|
|
gBitmap_constructorMethodID = env->GetMethodID(gBitmap_class, "<init>",
|
|
"(IZ[BI)V");
|
|
|
|
gBitmapRegionDecoder_class = make_globalref(env, "android/graphics/BitmapRegionDecoder");
|
|
gBitmapRegionDecoder_constructorMethodID = env->GetMethodID(gBitmapRegionDecoder_class, "<init>", "(I)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, "mNativeCanvas", "I");
|
|
|
|
gPaint_class = make_globalref(env, "android/graphics/Paint");
|
|
gPaint_nativeInstanceID = getFieldIDCheck(env, gPaint_class, "mNativePaint", "I");
|
|
|
|
gPicture_class = make_globalref(env, "android/graphics/Picture");
|
|
gPicture_nativeInstanceID = getFieldIDCheck(env, gPicture_class, "mNativePicture", "I");
|
|
|
|
gRegion_class = make_globalref(env, "android/graphics/Region");
|
|
gRegion_nativeInstanceID = getFieldIDCheck(env, gRegion_class, "mNativeRegion", "I");
|
|
gRegion_constructorMethodID = env->GetMethodID(gRegion_class, "<init>",
|
|
"(II)V");
|
|
|
|
// Get the VMRuntime class.
|
|
c = env->FindClass("dalvik/system/VMRuntime");
|
|
SkASSERT(c);
|
|
// Look up VMRuntime.getRuntime().
|
|
m = env->GetStaticMethodID(c, "getRuntime", "()Ldalvik/system/VMRuntime;");
|
|
SkASSERT(m);
|
|
// Call VMRuntime.getRuntime() and hold onto its result.
|
|
gVMRuntime_singleton = env->CallStaticObjectMethod(c, m);
|
|
SkASSERT(gVMRuntime_singleton);
|
|
gVMRuntime_singleton = (jobject)env->NewGlobalRef(gVMRuntime_singleton);
|
|
// Look up the VMRuntime methods we'll be using.
|
|
gVMRuntime_trackExternalAllocationMethodID =
|
|
env->GetMethodID(c, "trackExternalAllocation", "(J)Z");
|
|
gVMRuntime_trackExternalFreeMethodID =
|
|
env->GetMethodID(c, "trackExternalFree", "(J)V");
|
|
|
|
return 0;
|
|
}
|