| /* |
| * Copyright (C) 2007 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "Surface" |
| |
| #include <stdio.h> |
| |
| #include "jni.h" |
| #include "JNIHelp.h" |
| #include "android_os_Parcel.h" |
| #include "android/graphics/GraphicsJNI.h" |
| |
| #include <android_runtime/AndroidRuntime.h> |
| #include <android_runtime/android_view_Surface.h> |
| #include <android_runtime/android_graphics_SurfaceTexture.h> |
| |
| #include <binder/Parcel.h> |
| |
| #include <gui/Surface.h> |
| #include <gui/SurfaceControl.h> |
| #include <gui/GLConsumer.h> |
| |
| #include <ui/Rect.h> |
| #include <ui/Region.h> |
| |
| #include <SkCanvas.h> |
| #include <SkBitmap.h> |
| #include <SkRegion.h> |
| |
| #include <utils/misc.h> |
| #include <utils/Log.h> |
| |
| #include <ScopedUtfChars.h> |
| |
| // ---------------------------------------------------------------------------- |
| |
| namespace android { |
| |
| static const char* const OutOfResourcesException = |
| "android/view/Surface$OutOfResourcesException"; |
| |
| static struct { |
| jclass clazz; |
| jfieldID mNativeObject; |
| jfieldID mCanvas; |
| jmethodID ctor; |
| } gSurfaceClassInfo; |
| |
| static struct { |
| jfieldID left; |
| jfieldID top; |
| jfieldID right; |
| jfieldID bottom; |
| } gRectClassInfo; |
| |
| static struct { |
| jfieldID mFinalizer; |
| jfieldID mNativeCanvas; |
| jfieldID mSurfaceFormat; |
| } gCanvasClassInfo; |
| |
| static struct { |
| jfieldID mNativeCanvas; |
| } gCanvasFinalizerClassInfo; |
| |
| // ---------------------------------------------------------------------------- |
| |
| // this is just a pointer we use to pass to inc/decStrong |
| static const void *sRefBaseOwner; |
| |
| bool android_view_Surface_isInstanceOf(JNIEnv* env, jobject obj) { |
| return env->IsInstanceOf(obj, gSurfaceClassInfo.clazz); |
| } |
| |
| sp<ANativeWindow> android_view_Surface_getNativeWindow(JNIEnv* env, jobject surfaceObj) { |
| return android_view_Surface_getSurface(env, surfaceObj); |
| } |
| |
| sp<Surface> android_view_Surface_getSurface(JNIEnv* env, jobject surfaceObj) { |
| return reinterpret_cast<Surface *>( |
| env->GetIntField(surfaceObj, gSurfaceClassInfo.mNativeObject)); |
| } |
| |
| jobject android_view_Surface_createFromIGraphicBufferProducer(JNIEnv* env, |
| const sp<IGraphicBufferProducer>& bufferProducer) { |
| if (bufferProducer == NULL) { |
| return NULL; |
| } |
| |
| sp<Surface> surface(new Surface(bufferProducer)); |
| if (surface == NULL) { |
| return NULL; |
| } |
| |
| jobject surfaceObj = env->NewObject(gSurfaceClassInfo.clazz, gSurfaceClassInfo.ctor, surface.get()); |
| if (surfaceObj == NULL) { |
| if (env->ExceptionCheck()) { |
| ALOGE("Could not create instance of Surface from IGraphicBufferProducer."); |
| LOGE_EX(env); |
| env->ExceptionClear(); |
| } |
| return NULL; |
| } |
| surface->incStrong(&sRefBaseOwner); |
| return surfaceObj; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static inline bool isSurfaceValid(const sp<Surface>& sur) { |
| return Surface::isValid(sur); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static jint nativeCreateFromSurfaceTexture(JNIEnv* env, jclass clazz, |
| jobject surfaceTextureObj) { |
| sp<GLConsumer> st(SurfaceTexture_getSurfaceTexture(env, surfaceTextureObj)); |
| if (st == NULL) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", |
| "SurfaceTexture has already been released"); |
| return 0; |
| } |
| |
| sp<IGraphicBufferProducer> bq = st->getBufferQueue(); |
| sp<Surface> surface(new Surface(bq)); |
| if (surface == NULL) { |
| jniThrowException(env, OutOfResourcesException, NULL); |
| return 0; |
| } |
| |
| surface->incStrong(&sRefBaseOwner); |
| return int(surface.get()); |
| } |
| |
| static void nativeRelease(JNIEnv* env, jclass clazz, jint nativeObject) { |
| sp<Surface> sur(reinterpret_cast<Surface *>(nativeObject)); |
| sur->decStrong(&sRefBaseOwner); |
| } |
| |
| static jboolean nativeIsValid(JNIEnv* env, jclass clazz, jint nativeObject) { |
| sp<Surface> sur(reinterpret_cast<Surface *>(nativeObject)); |
| return isSurfaceValid(sur) ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static jboolean nativeIsConsumerRunningBehind(JNIEnv* env, jclass clazz, jint nativeObject) { |
| sp<Surface> sur(reinterpret_cast<Surface *>(nativeObject)); |
| if (!isSurfaceValid(sur)) { |
| doThrowIAE(env); |
| return JNI_FALSE; |
| } |
| int value = 0; |
| ANativeWindow* anw = static_cast<ANativeWindow*>(sur.get()); |
| anw->query(anw, NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND, &value); |
| return value; |
| } |
| |
| static inline SkBitmap::Config convertPixelFormat(PixelFormat format) { |
| /* note: if PIXEL_FORMAT_RGBX_8888 means that all alpha bytes are 0xFF, then |
| we can map to SkBitmap::kARGB_8888_Config, and optionally call |
| bitmap.setIsOpaque(true) on the resulting SkBitmap (as an accelerator) |
| */ |
| switch (format) { |
| case PIXEL_FORMAT_RGBX_8888: return SkBitmap::kARGB_8888_Config; |
| case PIXEL_FORMAT_RGBA_8888: return SkBitmap::kARGB_8888_Config; |
| case PIXEL_FORMAT_RGBA_4444: return SkBitmap::kARGB_4444_Config; |
| case PIXEL_FORMAT_RGB_565: return SkBitmap::kRGB_565_Config; |
| case PIXEL_FORMAT_A_8: return SkBitmap::kA8_Config; |
| default: return SkBitmap::kNo_Config; |
| } |
| } |
| |
| static inline void swapCanvasPtr(JNIEnv* env, jobject canvasObj, SkCanvas* newCanvas) { |
| jobject canvasFinalizerObj = env->GetObjectField(canvasObj, gCanvasClassInfo.mFinalizer); |
| SkCanvas* previousCanvas = reinterpret_cast<SkCanvas*>( |
| env->GetIntField(canvasObj, gCanvasClassInfo.mNativeCanvas)); |
| env->SetIntField(canvasObj, gCanvasClassInfo.mNativeCanvas, (int)newCanvas); |
| env->SetIntField(canvasFinalizerObj, gCanvasFinalizerClassInfo.mNativeCanvas, (int)newCanvas); |
| SkSafeUnref(previousCanvas); |
| } |
| |
| static jobject nativeLockCanvas(JNIEnv* env, jobject surfaceObj, jint nativeObject, jobject dirtyRectObj) { |
| sp<Surface> surface(reinterpret_cast<Surface *>(nativeObject)); |
| |
| if (!isSurfaceValid(surface)) { |
| doThrowIAE(env); |
| return NULL; |
| } |
| |
| // get dirty region |
| Region dirtyRegion; |
| if (dirtyRectObj) { |
| Rect dirty; |
| dirty.left = env->GetIntField(dirtyRectObj, gRectClassInfo.left); |
| dirty.top = env->GetIntField(dirtyRectObj, gRectClassInfo.top); |
| dirty.right = env->GetIntField(dirtyRectObj, gRectClassInfo.right); |
| dirty.bottom = env->GetIntField(dirtyRectObj, gRectClassInfo.bottom); |
| if (!dirty.isEmpty()) { |
| dirtyRegion.set(dirty); |
| } |
| } else { |
| dirtyRegion.set(Rect(0x3FFF, 0x3FFF)); |
| } |
| |
| ANativeWindow_Buffer outBuffer; |
| Rect dirtyBounds(dirtyRegion.getBounds()); |
| status_t err = surface->lock(&outBuffer, &dirtyBounds); |
| dirtyRegion.set(dirtyBounds); |
| if (err < 0) { |
| const char* const exception = (err == NO_MEMORY) ? |
| OutOfResourcesException : |
| "java/lang/IllegalArgumentException"; |
| jniThrowException(env, exception, NULL); |
| return NULL; |
| } |
| |
| // Associate a SkCanvas object to this surface |
| jobject canvasObj = env->GetObjectField(surfaceObj, gSurfaceClassInfo.mCanvas); |
| env->SetIntField(canvasObj, gCanvasClassInfo.mSurfaceFormat, outBuffer.format); |
| |
| SkBitmap bitmap; |
| ssize_t bpr = outBuffer.stride * bytesPerPixel(outBuffer.format); |
| bitmap.setConfig(convertPixelFormat(outBuffer.format), outBuffer.width, outBuffer.height, bpr); |
| if (outBuffer.format == PIXEL_FORMAT_RGBX_8888) { |
| bitmap.setIsOpaque(true); |
| } |
| if (outBuffer.width > 0 && outBuffer.height > 0) { |
| bitmap.setPixels(outBuffer.bits); |
| } else { |
| // be safe with an empty bitmap. |
| bitmap.setPixels(NULL); |
| } |
| |
| SkCanvas* nativeCanvas = SkNEW_ARGS(SkCanvas, (bitmap)); |
| swapCanvasPtr(env, canvasObj, nativeCanvas); |
| |
| SkRegion clipReg; |
| if (dirtyRegion.isRect()) { // very common case |
| const Rect b(dirtyRegion.getBounds()); |
| clipReg.setRect(b.left, b.top, b.right, b.bottom); |
| } else { |
| size_t count; |
| Rect const* r = dirtyRegion.getArray(&count); |
| while (count) { |
| clipReg.op(r->left, r->top, r->right, r->bottom, SkRegion::kUnion_Op); |
| r++, count--; |
| } |
| } |
| |
| nativeCanvas->clipRegion(clipReg); |
| |
| if (dirtyRectObj) { |
| const Rect& bounds(dirtyRegion.getBounds()); |
| env->SetIntField(dirtyRectObj, gRectClassInfo.left, bounds.left); |
| env->SetIntField(dirtyRectObj, gRectClassInfo.top, bounds.top); |
| env->SetIntField(dirtyRectObj, gRectClassInfo.right, bounds.right); |
| env->SetIntField(dirtyRectObj, gRectClassInfo.bottom, bounds.bottom); |
| } |
| |
| return canvasObj; |
| } |
| |
| static void nativeUnlockCanvasAndPost(JNIEnv* env, jobject surfaceObj, jint nativeObject, jobject canvasObj) { |
| jobject ownCanvasObj = env->GetObjectField(surfaceObj, gSurfaceClassInfo.mCanvas); |
| if (!env->IsSameObject(ownCanvasObj, canvasObj)) { |
| doThrowIAE(env); |
| return; |
| } |
| |
| sp<Surface> surface(reinterpret_cast<Surface *>(nativeObject)); |
| if (!isSurfaceValid(surface)) { |
| return; |
| } |
| |
| // detach the canvas from the surface |
| SkCanvas* nativeCanvas = SkNEW(SkCanvas); |
| swapCanvasPtr(env, canvasObj, nativeCanvas); |
| |
| // unlock surface |
| status_t err = surface->unlockAndPost(); |
| if (err < 0) { |
| doThrowIAE(env); |
| } |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static jint nativeCopyFrom(JNIEnv* env, jclass clazz, |
| jint nativeObject, jint surfaceControlNativeObj) { |
| /* |
| * This is used by the WindowManagerService just after constructing |
| * a Surface and is necessary for returning the Surface reference to |
| * the caller. At this point, we should only have a SurfaceControl. |
| */ |
| |
| sp<SurfaceControl> ctrl(reinterpret_cast<SurfaceControl *>(surfaceControlNativeObj)); |
| sp<Surface> other(ctrl->getSurface()); |
| if (other != NULL) { |
| other->incStrong(&sRefBaseOwner); |
| } |
| |
| sp<Surface> sur(reinterpret_cast<Surface *>(nativeObject)); |
| if (sur != NULL) { |
| sur->decStrong(&sRefBaseOwner); |
| } |
| |
| return int(other.get()); |
| } |
| |
| static jint nativeReadFromParcel(JNIEnv* env, jclass clazz, |
| jint nativeObject, jobject parcelObj) { |
| Parcel* parcel = parcelForJavaObject(env, parcelObj); |
| if (parcel == NULL) { |
| doThrowNPE(env); |
| return 0; |
| } |
| |
| sp<Surface> self(reinterpret_cast<Surface *>(nativeObject)); |
| sp<IBinder> binder(parcel->readStrongBinder()); |
| |
| // update the Surface only if the underlying IGraphicBufferProducer |
| // has changed. |
| if (self != NULL |
| && (self->getIGraphicBufferProducer()->asBinder() == binder)) { |
| // same IGraphicBufferProducer, return ourselves |
| return int(self.get()); |
| } |
| |
| sp<Surface> sur; |
| sp<IGraphicBufferProducer> gbp(interface_cast<IGraphicBufferProducer>(binder)); |
| if (gbp != NULL) { |
| // we have a new IGraphicBufferProducer, create a new Surface for it |
| sur = new Surface(gbp); |
| // and keep a reference before passing to java |
| sur->incStrong(&sRefBaseOwner); |
| } |
| |
| if (self != NULL) { |
| // and loose the java reference to ourselves |
| self->decStrong(&sRefBaseOwner); |
| } |
| |
| return int(sur.get()); |
| } |
| |
| static void nativeWriteToParcel(JNIEnv* env, jclass clazz, |
| jint nativeObject, jobject parcelObj) { |
| Parcel* parcel = parcelForJavaObject(env, parcelObj); |
| if (parcel == NULL) { |
| doThrowNPE(env); |
| return; |
| } |
| sp<Surface> self(reinterpret_cast<Surface *>(nativeObject)); |
| parcel->writeStrongBinder( self != 0 ? self->getIGraphicBufferProducer()->asBinder() : NULL); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static JNINativeMethod gSurfaceMethods[] = { |
| {"nativeCreateFromSurfaceTexture", "(Landroid/graphics/SurfaceTexture;)I", |
| (void*)nativeCreateFromSurfaceTexture }, |
| {"nativeRelease", "(I)V", |
| (void*)nativeRelease }, |
| {"nativeIsValid", "(I)Z", |
| (void*)nativeIsValid }, |
| {"nativeIsConsumerRunningBehind", "(I)Z", |
| (void*)nativeIsConsumerRunningBehind }, |
| {"nativeLockCanvas", "(ILandroid/graphics/Rect;)Landroid/graphics/Canvas;", |
| (void*)nativeLockCanvas }, |
| {"nativeUnlockCanvasAndPost", "(ILandroid/graphics/Canvas;)V", |
| (void*)nativeUnlockCanvasAndPost }, |
| {"nativeCopyFrom", "(II)I", |
| (void*)nativeCopyFrom }, |
| {"nativeReadFromParcel", "(ILandroid/os/Parcel;)I", |
| (void*)nativeReadFromParcel }, |
| {"nativeWriteToParcel", "(ILandroid/os/Parcel;)V", |
| (void*)nativeWriteToParcel }, |
| }; |
| |
| int register_android_view_Surface(JNIEnv* env) |
| { |
| int err = AndroidRuntime::registerNativeMethods(env, "android/view/Surface", |
| gSurfaceMethods, NELEM(gSurfaceMethods)); |
| |
| jclass clazz = env->FindClass("android/view/Surface"); |
| gSurfaceClassInfo.clazz = jclass(env->NewGlobalRef(clazz)); |
| gSurfaceClassInfo.mNativeObject = |
| env->GetFieldID(gSurfaceClassInfo.clazz, "mNativeObject", "I"); |
| gSurfaceClassInfo.mCanvas = |
| env->GetFieldID(gSurfaceClassInfo.clazz, "mCanvas", "Landroid/graphics/Canvas;"); |
| gSurfaceClassInfo.ctor = env->GetMethodID(gSurfaceClassInfo.clazz, "<init>", "(I)V"); |
| |
| clazz = env->FindClass("android/graphics/Canvas"); |
| gCanvasClassInfo.mFinalizer = env->GetFieldID(clazz, "mFinalizer", "Landroid/graphics/Canvas$CanvasFinalizer;"); |
| gCanvasClassInfo.mNativeCanvas = env->GetFieldID(clazz, "mNativeCanvas", "I"); |
| gCanvasClassInfo.mSurfaceFormat = env->GetFieldID(clazz, "mSurfaceFormat", "I"); |
| |
| clazz = env->FindClass("android/graphics/Canvas$CanvasFinalizer"); |
| gCanvasFinalizerClassInfo.mNativeCanvas = env->GetFieldID(clazz, "mNativeCanvas", "I"); |
| |
| clazz = env->FindClass("android/graphics/Rect"); |
| gRectClassInfo.left = env->GetFieldID(clazz, "left", "I"); |
| gRectClassInfo.top = env->GetFieldID(clazz, "top", "I"); |
| gRectClassInfo.right = env->GetFieldID(clazz, "right", "I"); |
| gRectClassInfo.bottom = env->GetFieldID(clazz, "bottom", "I"); |
| |
| return err; |
| } |
| |
| }; |