908aecc3a6
This puts in most of the infrastructure needed to allow us to switch between different densities at run time. The main remaining uses of the global are to initialize the Bitmap object (not sure what to do about that since it doesn't have anything passed in the constructor to get this information from), and being able to load drawables if we need a different density than what was preloaded by zygote. Change-Id: Ifdbfd6b7a5c59e6aa22e63b95b78d96af3d96848
92 lines
3.4 KiB
C++
92 lines
3.4 KiB
C++
/*
|
|
* Copyright (C) 2012 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 "SurfaceFlingerDisplayAdapter"
|
|
|
|
#include "JNIHelp.h"
|
|
#include "jni.h"
|
|
#include <android_runtime/AndroidRuntime.h>
|
|
|
|
#include <gui/SurfaceComposerClient.h>
|
|
#include <ui/DisplayInfo.h>
|
|
|
|
#include <utils/Log.h>
|
|
|
|
namespace android {
|
|
|
|
static struct {
|
|
jfieldID width;
|
|
jfieldID height;
|
|
jfieldID refreshRate;
|
|
jfieldID densityDpi;
|
|
jfieldID xDpi;
|
|
jfieldID yDpi;
|
|
} gDisplayDeviceInfoClassInfo;
|
|
|
|
|
|
static void nativeGetDefaultDisplayDeviceInfo(JNIEnv* env, jclass clazz, jobject infoObj) {
|
|
DisplayInfo info;
|
|
status_t err = SurfaceComposerClient::getDisplayInfo(0, &info);
|
|
if (err < 0) {
|
|
jniThrowExceptionFmt(env, "java/lang/RuntimeException",
|
|
"Could not get display info. err=%d", err);
|
|
return;
|
|
}
|
|
|
|
env->SetIntField(infoObj, gDisplayDeviceInfoClassInfo.width, info.w);
|
|
env->SetIntField(infoObj, gDisplayDeviceInfoClassInfo.height, info.h);
|
|
env->SetFloatField(infoObj, gDisplayDeviceInfoClassInfo.refreshRate, info.fps);
|
|
env->SetIntField(infoObj, gDisplayDeviceInfoClassInfo.densityDpi,
|
|
(jint)((info.density*160) + .5f));
|
|
env->SetFloatField(infoObj, gDisplayDeviceInfoClassInfo.xDpi, info.xdpi);
|
|
env->SetFloatField(infoObj, gDisplayDeviceInfoClassInfo.yDpi, info.ydpi);
|
|
}
|
|
|
|
|
|
static JNINativeMethod gSurfaceFlingerDisplayAdapterMethods[] = {
|
|
/* name, signature, funcPtr */
|
|
{ "nativeGetDefaultDisplayDeviceInfo",
|
|
"(Lcom/android/server/display/DisplayDeviceInfo;)V",
|
|
(void*) nativeGetDefaultDisplayDeviceInfo },
|
|
};
|
|
|
|
#define FIND_CLASS(var, className) \
|
|
var = env->FindClass(className); \
|
|
LOG_FATAL_IF(! var, "Unable to find class " className);
|
|
|
|
#define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
|
|
var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
|
|
LOG_FATAL_IF(! var, "Unable to find field " fieldName);
|
|
|
|
int register_android_server_display_SurfaceFlingerDisplayAdapter(JNIEnv* env) {
|
|
int res = jniRegisterNativeMethods(env,
|
|
"com/android/server/display/SurfaceFlingerDisplayAdapter",
|
|
gSurfaceFlingerDisplayAdapterMethods, NELEM(gSurfaceFlingerDisplayAdapterMethods));
|
|
LOG_FATAL_IF(res < 0, "Unable to register native methods.");
|
|
|
|
jclass clazz;
|
|
FIND_CLASS(clazz, "com/android/server/display/DisplayDeviceInfo");
|
|
GET_FIELD_ID(gDisplayDeviceInfoClassInfo.width, clazz, "width", "I");
|
|
GET_FIELD_ID(gDisplayDeviceInfoClassInfo.height, clazz, "height", "I");
|
|
GET_FIELD_ID(gDisplayDeviceInfoClassInfo.refreshRate, clazz, "refreshRate", "F");
|
|
GET_FIELD_ID(gDisplayDeviceInfoClassInfo.densityDpi, clazz, "densityDpi", "I");
|
|
GET_FIELD_ID(gDisplayDeviceInfoClassInfo.xDpi, clazz, "xDpi", "F");
|
|
GET_FIELD_ID(gDisplayDeviceInfoClassInfo.yDpi, clazz, "yDpi", "F");
|
|
return 0;
|
|
}
|
|
|
|
} /* namespace android */
|