split Surface in two classes: SurfaceControl and Surface
SurfaceControl is the window manager side; it can
control the attributes of a surface but cannot push buffers
to it. Surface on the other hand is the application (producer)
side and is used to push buffers to the surface.
Change-Id: Ib6754c968924e87e8dd02a2073c7a447f729f4dd
diff --git a/core/jni/android_view_SurfaceControl.cpp b/core/jni/android_view_SurfaceControl.cpp
new file mode 100644
index 0000000..7398895
--- /dev/null
+++ b/core/jni/android_view_SurfaceControl.cpp
@@ -0,0 +1,451 @@
+/*
+ * Copyright (C) 2013 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 "SurfaceControl"
+
+#include <stdio.h>
+
+#include "jni.h"
+#include "JNIHelp.h"
+
+#include "android_os_Parcel.h"
+#include "android_util_Binder.h"
+#include "android/graphics/GraphicsJNI.h"
+#include "android/graphics/Region.h"
+
+#include <android_runtime/AndroidRuntime.h>
+#include <android_runtime/android_view_SurfaceSession.h>
+
+#include <gui/Surface.h>
+#include <gui/SurfaceComposerClient.h>
+
+#include <ui/DisplayInfo.h>
+#include <ui/Rect.h>
+#include <ui/Region.h>
+
+#include <utils/Log.h>
+
+#include <ScopedUtfChars.h>
+
+// ----------------------------------------------------------------------------
+
+namespace android {
+
+static const char* const OutOfResourcesException =
+ "android/view/Surface$OutOfResourcesException";
+
+static struct {
+ jfieldID width;
+ jfieldID height;
+ jfieldID refreshRate;
+ jfieldID density;
+ jfieldID xDpi;
+ jfieldID yDpi;
+ jfieldID secure;
+} gPhysicalDisplayInfoClassInfo;
+
+
+class ScreenshotPixelRef : public SkPixelRef {
+public:
+ ScreenshotPixelRef(SkColorTable* ctable) {
+ fCTable = ctable;
+ SkSafeRef(ctable);
+ setImmutable();
+ }
+
+ virtual ~ScreenshotPixelRef() {
+ SkSafeUnref(fCTable);
+ }
+
+ status_t update(const sp<IBinder>& display, int width, int height,
+ int minLayer, int maxLayer, bool allLayers) {
+ status_t res = (width > 0 && height > 0)
+ ? (allLayers
+ ? mScreenshot.update(display, width, height)
+ : mScreenshot.update(display, width, height, minLayer, maxLayer))
+ : mScreenshot.update(display);
+ if (res != NO_ERROR) {
+ return res;
+ }
+
+ return NO_ERROR;
+ }
+
+ uint32_t getWidth() const {
+ return mScreenshot.getWidth();
+ }
+
+ uint32_t getHeight() const {
+ return mScreenshot.getHeight();
+ }
+
+ uint32_t getStride() const {
+ return mScreenshot.getStride();
+ }
+
+ uint32_t getFormat() const {
+ return mScreenshot.getFormat();
+ }
+
+protected:
+ // overrides from SkPixelRef
+ virtual void* onLockPixels(SkColorTable** ct) {
+ *ct = fCTable;
+ return (void*)mScreenshot.getPixels();
+ }
+
+ virtual void onUnlockPixels() {
+ }
+
+private:
+ ScreenshotClient mScreenshot;
+ SkColorTable* fCTable;
+
+ typedef SkPixelRef INHERITED;
+};
+
+
+// ----------------------------------------------------------------------------
+
+static jint nativeCreate(JNIEnv* env, jobject surfaceObj, jobject sessionObj,
+ jstring nameStr, jint w, jint h, jint format, jint flags) {
+ ScopedUtfChars name(env, nameStr);
+ sp<SurfaceComposerClient> client(android_view_SurfaceSession_getClient(env, sessionObj));
+ sp<SurfaceControl> surface = client->createSurface(
+ String8(name.c_str()), w, h, format, flags);
+ if (surface == NULL) {
+ jniThrowException(env, OutOfResourcesException, NULL);
+ return 0;
+ }
+ surface->incStrong(surfaceObj);
+ return int(surface.get());
+}
+
+static void nativeRelease(JNIEnv* env, jobject surfaceObj, jint nativeObject) {
+ sp<SurfaceControl> ctrl(reinterpret_cast<SurfaceControl *>(nativeObject));
+ ctrl->decStrong(surfaceObj);
+}
+
+static void nativeDestroy(JNIEnv* env, jobject surfaceObj, jint nativeObject) {
+ sp<SurfaceControl> ctrl(reinterpret_cast<SurfaceControl *>(nativeObject));
+ ctrl->clear();
+ ctrl->decStrong(surfaceObj);
+}
+
+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 jobject nativeScreenshot(JNIEnv* env, jclass clazz, jobject displayTokenObj,
+ jint width, jint height, jint minLayer, jint maxLayer, bool allLayers) {
+ sp<IBinder> displayToken = ibinderForJavaObject(env, displayTokenObj);
+ if (displayToken == NULL) {
+ return NULL;
+ }
+
+ ScreenshotPixelRef* pixels = new ScreenshotPixelRef(NULL);
+ if (pixels->update(displayToken, width, height,
+ minLayer, maxLayer, allLayers) != NO_ERROR) {
+ delete pixels;
+ return NULL;
+ }
+
+ uint32_t w = pixels->getWidth();
+ uint32_t h = pixels->getHeight();
+ uint32_t s = pixels->getStride();
+ uint32_t f = pixels->getFormat();
+ ssize_t bpr = s * android::bytesPerPixel(f);
+
+ SkBitmap* bitmap = new SkBitmap();
+ bitmap->setConfig(convertPixelFormat(f), w, h, bpr);
+ if (f == PIXEL_FORMAT_RGBX_8888) {
+ bitmap->setIsOpaque(true);
+ }
+
+ if (w > 0 && h > 0) {
+ bitmap->setPixelRef(pixels)->unref();
+ bitmap->lockPixels();
+ } else {
+ // be safe with an empty bitmap.
+ delete pixels;
+ bitmap->setPixels(NULL);
+ }
+
+ return GraphicsJNI::createBitmap(env, bitmap, false, NULL);
+}
+
+static void nativeOpenTransaction(JNIEnv* env, jclass clazz) {
+ SurfaceComposerClient::openGlobalTransaction();
+}
+
+static void nativeCloseTransaction(JNIEnv* env, jclass clazz) {
+ SurfaceComposerClient::closeGlobalTransaction();
+}
+
+static void nativeSetAnimationTransaction(JNIEnv* env, jclass clazz) {
+ SurfaceComposerClient::setAnimationTransaction();
+}
+
+static void nativeSetLayer(JNIEnv* env, jobject surfaceObj, jint nativeObject, jint zorder) {
+ SurfaceControl* const ctrl = reinterpret_cast<SurfaceControl *>(nativeObject);
+ status_t err = ctrl->setLayer(zorder);
+ if (err < 0 && err != NO_INIT) {
+ doThrowIAE(env);
+ }
+}
+
+static void nativeSetPosition(JNIEnv* env, jobject surfaceObj, jint nativeObject, jfloat x, jfloat y) {
+ SurfaceControl* const ctrl = reinterpret_cast<SurfaceControl *>(nativeObject);
+ status_t err = ctrl->setPosition(x, y);
+ if (err < 0 && err != NO_INIT) {
+ doThrowIAE(env);
+ }
+}
+
+static void nativeSetSize(JNIEnv* env, jobject surfaceObj, jint nativeObject, jint w, jint h) {
+ SurfaceControl* const ctrl = reinterpret_cast<SurfaceControl *>(nativeObject);
+ status_t err = ctrl->setSize(w, h);
+ if (err < 0 && err != NO_INIT) {
+ doThrowIAE(env);
+ }
+}
+
+static void nativeSetFlags(JNIEnv* env, jobject surfaceObj, jint nativeObject, jint flags, jint mask) {
+ SurfaceControl* const ctrl = reinterpret_cast<SurfaceControl *>(nativeObject);
+ status_t err = ctrl->setFlags(flags, mask);
+ if (err < 0 && err != NO_INIT) {
+ doThrowIAE(env);
+ }
+}
+
+static void nativeSetTransparentRegionHint(JNIEnv* env, jobject surfaceObj, jint nativeObject, jobject regionObj) {
+ SurfaceControl* const ctrl = reinterpret_cast<SurfaceControl *>(nativeObject);
+ SkRegion* region = android_graphics_Region_getSkRegion(env, regionObj);
+ if (!region) {
+ doThrowIAE(env);
+ return;
+ }
+
+ const SkIRect& b(region->getBounds());
+ Region reg(Rect(b.fLeft, b.fTop, b.fRight, b.fBottom));
+ if (region->isComplex()) {
+ SkRegion::Iterator it(*region);
+ while (!it.done()) {
+ const SkIRect& r(it.rect());
+ reg.addRectUnchecked(r.fLeft, r.fTop, r.fRight, r.fBottom);
+ it.next();
+ }
+ }
+
+ status_t err = ctrl->setTransparentRegionHint(reg);
+ if (err < 0 && err != NO_INIT) {
+ doThrowIAE(env);
+ }
+}
+
+static void nativeSetAlpha(JNIEnv* env, jobject surfaceObj, jint nativeObject, jfloat alpha) {
+ SurfaceControl* const ctrl = reinterpret_cast<SurfaceControl *>(nativeObject);
+ status_t err = ctrl->setAlpha(alpha);
+ if (err < 0 && err != NO_INIT) {
+ doThrowIAE(env);
+ }
+}
+
+static void nativeSetMatrix(JNIEnv* env, jobject surfaceObj, jint nativeObject,
+ jfloat dsdx, jfloat dtdx, jfloat dsdy, jfloat dtdy) {
+ SurfaceControl* const ctrl = reinterpret_cast<SurfaceControl *>(nativeObject);
+ status_t err = ctrl->setMatrix(dsdx, dtdx, dsdy, dtdy);
+ if (err < 0 && err != NO_INIT) {
+ doThrowIAE(env);
+ }
+}
+
+static void nativeSetWindowCrop(JNIEnv* env, jobject surfaceObj, jint nativeObject,
+ jint l, jint t, jint r, jint b) {
+ SurfaceControl* const ctrl = reinterpret_cast<SurfaceControl *>(nativeObject);
+ Rect crop(l, t, r, b);
+ status_t err = ctrl->setCrop(crop);
+ if (err < 0 && err != NO_INIT) {
+ doThrowIAE(env);
+ }
+}
+
+static void nativeSetLayerStack(JNIEnv* env, jobject surfaceObj, jint nativeObject, jint layerStack) {
+ SurfaceControl* const ctrl = reinterpret_cast<SurfaceControl *>(nativeObject);
+ status_t err = ctrl->setLayerStack(layerStack);
+ if (err < 0 && err != NO_INIT) {
+ doThrowIAE(env);
+ }
+}
+
+static jobject nativeGetBuiltInDisplay(JNIEnv* env, jclass clazz, jint id) {
+ sp<IBinder> token(SurfaceComposerClient::getBuiltInDisplay(id));
+ return javaObjectForIBinder(env, token);
+}
+
+static jobject nativeCreateDisplay(JNIEnv* env, jclass clazz, jstring nameObj,
+ jboolean secure) {
+ ScopedUtfChars name(env, nameObj);
+ sp<IBinder> token(SurfaceComposerClient::createDisplay(
+ String8(name.c_str()), bool(secure)));
+ return javaObjectForIBinder(env, token);
+}
+
+static void nativeSetDisplaySurface(JNIEnv* env, jclass clazz,
+ jobject tokenObj, jint nativeSurfaceObject) {
+ sp<IBinder> token(ibinderForJavaObject(env, tokenObj));
+ if (token == NULL) return;
+ sp<Surface> sur(reinterpret_cast<Surface *>(nativeSurfaceObject));
+ sp<IGraphicBufferProducer> bufferProducer(sur->getSurfaceTexture());
+ SurfaceComposerClient::setDisplaySurface(token, bufferProducer);
+}
+
+static void nativeSetDisplayLayerStack(JNIEnv* env, jclass clazz,
+ jobject tokenObj, jint layerStack) {
+ sp<IBinder> token(ibinderForJavaObject(env, tokenObj));
+ if (token == NULL) return;
+
+ SurfaceComposerClient::setDisplayLayerStack(token, layerStack);
+}
+
+static void nativeSetDisplayProjection(JNIEnv* env, jclass clazz,
+ jobject tokenObj, jint orientation,
+ jint layerStackRect_left, jint layerStackRect_top, jint layerStackRect_right, jint layerStackRect_bottom,
+ jint displayRect_left, jint displayRect_top, jint displayRect_right, jint displayRect_bottom) {
+ sp<IBinder> token(ibinderForJavaObject(env, tokenObj));
+ if (token == NULL) return;
+ Rect layerStackRect(layerStackRect_left, layerStackRect_top, layerStackRect_right, layerStackRect_bottom);
+ Rect displayRect(displayRect_left, displayRect_top, displayRect_right, displayRect_bottom);
+ SurfaceComposerClient::setDisplayProjection(token, orientation, layerStackRect, displayRect);
+}
+
+static jboolean nativeGetDisplayInfo(JNIEnv* env, jclass clazz,
+ jobject tokenObj, jobject infoObj) {
+ sp<IBinder> token(ibinderForJavaObject(env, tokenObj));
+ if (token == NULL) return JNI_FALSE;
+
+ DisplayInfo info;
+ if (SurfaceComposerClient::getDisplayInfo(token, &info)) {
+ return JNI_FALSE;
+ }
+
+ env->SetIntField(infoObj, gPhysicalDisplayInfoClassInfo.width, info.w);
+ env->SetIntField(infoObj, gPhysicalDisplayInfoClassInfo.height, info.h);
+ env->SetFloatField(infoObj, gPhysicalDisplayInfoClassInfo.refreshRate, info.fps);
+ env->SetFloatField(infoObj, gPhysicalDisplayInfoClassInfo.density, info.density);
+ env->SetFloatField(infoObj, gPhysicalDisplayInfoClassInfo.xDpi, info.xdpi);
+ env->SetFloatField(infoObj, gPhysicalDisplayInfoClassInfo.yDpi, info.ydpi);
+ env->SetBooleanField(infoObj, gPhysicalDisplayInfoClassInfo.secure, info.secure);
+ return JNI_TRUE;
+}
+
+static void nativeBlankDisplay(JNIEnv* env, jclass clazz, jobject tokenObj) {
+ sp<IBinder> token(ibinderForJavaObject(env, tokenObj));
+ if (token == NULL) return;
+
+ ALOGD_IF_SLOW(100, "Excessive delay in blankDisplay() while turning screen off");
+ SurfaceComposerClient::blankDisplay(token);
+}
+
+static void nativeUnblankDisplay(JNIEnv* env, jclass clazz, jobject tokenObj) {
+ sp<IBinder> token(ibinderForJavaObject(env, tokenObj));
+ if (token == NULL) return;
+
+ ALOGD_IF_SLOW(100, "Excessive delay in unblankDisplay() while turning screen on");
+ SurfaceComposerClient::unblankDisplay(token);
+}
+
+// ----------------------------------------------------------------------------
+
+static JNINativeMethod sSurfaceControlMethods[] = {
+ {"nativeCreate", "(Landroid/view/SurfaceSession;Ljava/lang/String;IIII)I",
+ (void*)nativeCreate },
+ {"nativeRelease", "(I)V",
+ (void*)nativeRelease },
+ {"nativeDestroy", "(I)V",
+ (void*)nativeDestroy },
+ {"nativeScreenshot", "(Landroid/os/IBinder;IIIIZ)Landroid/graphics/Bitmap;",
+ (void*)nativeScreenshot },
+ {"nativeOpenTransaction", "()V",
+ (void*)nativeOpenTransaction },
+ {"nativeCloseTransaction", "()V",
+ (void*)nativeCloseTransaction },
+ {"nativeSetAnimationTransaction", "()V",
+ (void*)nativeSetAnimationTransaction },
+ {"nativeSetLayer", "(II)V",
+ (void*)nativeSetLayer },
+ {"nativeSetPosition", "(IFF)V",
+ (void*)nativeSetPosition },
+ {"nativeSetSize", "(III)V",
+ (void*)nativeSetSize },
+ {"nativeSetTransparentRegionHint", "(ILandroid/graphics/Region;)V",
+ (void*)nativeSetTransparentRegionHint },
+ {"nativeSetAlpha", "(IF)V",
+ (void*)nativeSetAlpha },
+ {"nativeSetMatrix", "(IFFFF)V",
+ (void*)nativeSetMatrix },
+ {"nativeSetFlags", "(III)V",
+ (void*)nativeSetFlags },
+ {"nativeSetWindowCrop", "(IIIII)V",
+ (void*)nativeSetWindowCrop },
+ {"nativeSetLayerStack", "(II)V",
+ (void*)nativeSetLayerStack },
+ {"nativeGetBuiltInDisplay", "(I)Landroid/os/IBinder;",
+ (void*)nativeGetBuiltInDisplay },
+ {"nativeCreateDisplay", "(Ljava/lang/String;Z)Landroid/os/IBinder;",
+ (void*)nativeCreateDisplay },
+ {"nativeSetDisplaySurface", "(Landroid/os/IBinder;I)V",
+ (void*)nativeSetDisplaySurface },
+ {"nativeSetDisplayLayerStack", "(Landroid/os/IBinder;I)V",
+ (void*)nativeSetDisplayLayerStack },
+ {"nativeSetDisplayProjection", "(Landroid/os/IBinder;IIIIIIIII)V",
+ (void*)nativeSetDisplayProjection },
+ {"nativeGetDisplayInfo", "(Landroid/os/IBinder;Landroid/view/SurfaceControl$PhysicalDisplayInfo;)Z",
+ (void*)nativeGetDisplayInfo },
+ {"nativeBlankDisplay", "(Landroid/os/IBinder;)V",
+ (void*)nativeBlankDisplay },
+ {"nativeUnblankDisplay", "(Landroid/os/IBinder;)V",
+ (void*)nativeUnblankDisplay },
+};
+
+int register_android_view_SurfaceControl(JNIEnv* env)
+{
+ int err = AndroidRuntime::registerNativeMethods(env, "android/view/SurfaceControl",
+ sSurfaceControlMethods, NELEM(sSurfaceControlMethods));
+
+ jclass clazz = env->FindClass("android/view/SurfaceControl$PhysicalDisplayInfo");
+ gPhysicalDisplayInfoClassInfo.width = env->GetFieldID(clazz, "width", "I");
+ gPhysicalDisplayInfoClassInfo.height = env->GetFieldID(clazz, "height", "I");
+ gPhysicalDisplayInfoClassInfo.refreshRate = env->GetFieldID(clazz, "refreshRate", "F");
+ gPhysicalDisplayInfoClassInfo.density = env->GetFieldID(clazz, "density", "F");
+ gPhysicalDisplayInfoClassInfo.xDpi = env->GetFieldID(clazz, "xDpi", "F");
+ gPhysicalDisplayInfoClassInfo.yDpi = env->GetFieldID(clazz, "yDpi", "F");
+ gPhysicalDisplayInfoClassInfo.secure = env->GetFieldID(clazz, "secure", "Z");
+ return err;
+}
+
+};