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/*
* 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.
*/
#include <stdio.h>
#include <assert.h>
#include <cutils/properties.h>
#include <gui/SurfaceComposerClient.h>
#include <ui/PixelFormat.h>
#include <ui/DisplayInfo.h>
#include "jni.h"
#include "JNIHelp.h"
#include <android_runtime/AndroidRuntime.h>
#include <utils/misc.h>
#include <utils/Log.h>
#include <cutils/properties.h>
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
struct offsets_t {
jfieldID display;
jfieldID pixelFormat;
jfieldID fps;
jfieldID density;
jfieldID xdpi;
jfieldID ydpi;
};
static offsets_t offsets;
static bool headless = false;
// ----------------------------------------------------------------------------
static void android_view_Display_init(
JNIEnv* env, jobject clazz, jint dpy)
{
DisplayInfo info;
if (headless) {
// initialize dummy display with reasonable values
info.pixelFormatInfo.format = 1; // RGB_8888
info.fps = 60;
info.density = 160;
info.xdpi = 160;
info.ydpi = 160;
} else {
status_t err = SurfaceComposerClient::getDisplayInfo(DisplayID(dpy), &info);
if (err < 0) {
jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
return;
}
}
env->SetIntField(clazz, offsets.pixelFormat,info.pixelFormatInfo.format);
env->SetFloatField(clazz, offsets.fps, info.fps);
env->SetFloatField(clazz, offsets.density, info.density);
env->SetFloatField(clazz, offsets.xdpi, info.xdpi);
env->SetFloatField(clazz, offsets.ydpi, info.ydpi);
}
static jint android_view_Display_getRawWidthNative(
JNIEnv* env, jobject clazz)
{
if (headless) return 640;
DisplayID dpy = env->GetIntField(clazz, offsets.display);
return SurfaceComposerClient::getDisplayWidth(dpy);
}
static jint android_view_Display_getRawHeightNative(
JNIEnv* env, jobject clazz)
{
if (headless) return 480;
DisplayID dpy = env->GetIntField(clazz, offsets.display);
return SurfaceComposerClient::getDisplayHeight(dpy);
}
static jint android_view_Display_getOrientation(
JNIEnv* env, jobject clazz)
{
if (headless) return 0; // Surface.ROTATION_0
DisplayID dpy = env->GetIntField(clazz, offsets.display);
return SurfaceComposerClient::getDisplayOrientation(dpy);
}
static jint android_view_Display_getDisplayCount(
JNIEnv* env, jclass clazz)
{
if (headless) return 1;
return SurfaceComposerClient::getNumberOfDisplays();
}
// ----------------------------------------------------------------------------
const char* const kClassPathName = "android/view/Display";
static void nativeClassInit(JNIEnv* env, jclass clazz);
static JNINativeMethod gMethods[] = {
{ "nativeClassInit", "()V",
(void*)nativeClassInit },
{ "getDisplayCount", "()I",
(void*)android_view_Display_getDisplayCount },
{ "init", "(I)V",
(void*)android_view_Display_init },
{ "getRawWidthNative", "()I",
(void*)android_view_Display_getRawWidthNative },
{ "getRawHeightNative", "()I",
(void*)android_view_Display_getRawHeightNative },
{ "getOrientation", "()I",
(void*)android_view_Display_getOrientation }
};
void nativeClassInit(JNIEnv* env, jclass clazz)
{
char value[PROPERTY_VALUE_MAX];
property_get("ro.config.headless", value, "0");
if (strcmp(value, "1") == 0)
headless = true;
offsets.display = env->GetFieldID(clazz, "mDisplay", "I");
offsets.pixelFormat = env->GetFieldID(clazz, "mPixelFormat", "I");
offsets.fps = env->GetFieldID(clazz, "mRefreshRate", "F");
offsets.density = env->GetFieldID(clazz, "mDensity", "F");
offsets.xdpi = env->GetFieldID(clazz, "mDpiX", "F");
offsets.ydpi = env->GetFieldID(clazz, "mDpiY", "F");
}
int register_android_view_Display(JNIEnv* env)
{
return AndroidRuntime::registerNativeMethods(env,
kClassPathName, gMethods, NELEM(gMethods));
}
};
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