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/*
* Copyright (C) 2008 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.
*/
#include <stdio.h>
#include <assert.h>
#include <sys/socket.h>
#include <core/SkCanvas.h>
#include <core/SkDevice.h>
#include <core/SkPaint.h>
#include <utils/SkGLCanvas.h>
#include "GraphicsJNI.h"
#include "jni.h"
#include <nativehelper/JNIHelp.h>
#include <android_runtime/AndroidRuntime.h>
#include <utils/misc.h>
// ----------------------------------------------------------------------------
namespace android {
static int gPrevDur;
static void android_view_ViewRoot_showFPS(JNIEnv* env, jobject, jobject jcanvas,
jint dur) {
NPE_CHECK_RETURN_VOID(env, jcanvas);
SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, jcanvas);
const SkBitmap& bm = canvas->getDevice()->accessBitmap(false);
int height = bm.height();
SkScalar bot = SkIntToScalar(height);
if (height < 200) {
return;
}
SkMatrix m;
SkRect r;
SkPaint p;
char str[4];
dur = (gPrevDur + dur) >> 1;
gPrevDur = dur;
dur = 1000 / dur;
str[3] = (char)('0' + dur % 10); dur /= 10;
str[2] = (char)('0' + dur % 10); dur /= 10;
str[1] = (char)('0' + dur % 10); dur /= 10;
str[0] = (char)('0' + dur % 10);
m.reset();
r.set(0, bot-SkIntToScalar(10), SkIntToScalar(26), bot);
p.setAntiAlias(true);
p.setTextSize(SkIntToScalar(10));
canvas->save();
canvas->setMatrix(m);
canvas->clipRect(r, SkRegion::kReplace_Op);
p.setColor(SK_ColorWHITE);
canvas->drawPaint(p);
p.setColor(SK_ColorBLACK);
canvas->drawText(str, 4, SkIntToScalar(1), bot - SK_Scalar1, p);
canvas->restore();
}
static void android_view_ViewRoot_abandonGlCaches(JNIEnv* env, jobject) {
SkGLCanvas::AbandonAllTextures();
}
static jintArray android_view_ViewRoot_makeInputChannel(JNIEnv* env, jobject) {
int fd[2];
jint* arrayData = NULL;
// Create the pipe
int err = socketpair(AF_LOCAL, SOCK_STREAM, 0, fd);
if (err != 0) {
fprintf(stderr, "socketpair() failed: %d\n", errno);
doThrow(env, "java/lang/RuntimeException", "Unable to create pipe");
return NULL;
}
// Set up the return array
jintArray array = env->NewIntArray(2);
if (env->ExceptionCheck()) {
fprintf(stderr, "Exception allocating fd array");
goto bail;
}
arrayData = env->GetIntArrayElements(array, 0);
arrayData[0] = fd[0];
arrayData[1] = fd[1];
env->ReleaseIntArrayElements(array, arrayData, 0);
return array;
bail:
env->DeleteLocalRef(array);
close(fd[0]);
close(fd[1]);
return NULL;
}
// ----------------------------------------------------------------------------
const char* const kClassPathName = "android/view/ViewRoot";
static JNINativeMethod gMethods[] = {
{ "nativeShowFPS", "(Landroid/graphics/Canvas;I)V",
(void*)android_view_ViewRoot_showFPS },
{ "nativeAbandonGlCaches", "()V",
(void*)android_view_ViewRoot_abandonGlCaches },
{ "makeInputChannel", "()[I",
(void*)android_view_ViewRoot_makeInputChannel }
};
int register_android_view_ViewRoot(JNIEnv* env) {
return AndroidRuntime::registerNativeMethods(env,
kClassPathName, gMethods, NELEM(gMethods));
}
};
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