The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <stdio.h> |
| 18 | #include <assert.h> |
| 19 | |
| 20 | #include <ui/SurfaceComposerClient.h> |
| 21 | #include <ui/PixelFormat.h> |
| 22 | #include <ui/DisplayInfo.h> |
| 23 | |
| 24 | #include "jni.h" |
| 25 | #include <android_runtime/AndroidRuntime.h> |
| 26 | #include <utils/misc.h> |
| 27 | |
| 28 | // ---------------------------------------------------------------------------- |
| 29 | |
| 30 | namespace android { |
| 31 | |
| 32 | // ---------------------------------------------------------------------------- |
| 33 | |
| 34 | struct offsets_t { |
| 35 | jfieldID display; |
| 36 | jfieldID pixelFormat; |
| 37 | jfieldID fps; |
| 38 | jfieldID density; |
| 39 | jfieldID xdpi; |
| 40 | jfieldID ydpi; |
| 41 | }; |
| 42 | static offsets_t offsets; |
| 43 | |
| 44 | static void doThrow(JNIEnv* env, const char* exc, const char* msg = NULL) |
| 45 | { |
| 46 | jclass npeClazz = env->FindClass(exc); |
| 47 | env->ThrowNew(npeClazz, msg); |
| 48 | } |
| 49 | |
| 50 | // ---------------------------------------------------------------------------- |
| 51 | |
| 52 | static void android_view_Display_init( |
| 53 | JNIEnv* env, jobject clazz, jint dpy) |
| 54 | { |
| 55 | DisplayInfo info; |
| 56 | status_t err = SurfaceComposerClient::getDisplayInfo(DisplayID(dpy), &info); |
| 57 | if (err < 0) { |
| 58 | doThrow(env, "java/lang/IllegalArgumentException"); |
| 59 | return; |
| 60 | } |
| 61 | env->SetIntField(clazz, offsets.pixelFormat,info.pixelFormatInfo.format); |
| 62 | env->SetFloatField(clazz, offsets.fps, info.fps); |
| 63 | env->SetFloatField(clazz, offsets.density, info.density); |
| 64 | env->SetFloatField(clazz, offsets.xdpi, info.xdpi); |
| 65 | env->SetFloatField(clazz, offsets.ydpi, info.ydpi); |
| 66 | } |
| 67 | |
| 68 | static jint android_view_Display_getWidth( |
| 69 | JNIEnv* env, jobject clazz) |
| 70 | { |
| 71 | DisplayID dpy = env->GetIntField(clazz, offsets.display); |
| 72 | return SurfaceComposerClient::getDisplayWidth(dpy); |
| 73 | } |
| 74 | |
| 75 | static jint android_view_Display_getHeight( |
| 76 | JNIEnv* env, jobject clazz) |
| 77 | { |
| 78 | DisplayID dpy = env->GetIntField(clazz, offsets.display); |
| 79 | return SurfaceComposerClient::getDisplayHeight(dpy); |
| 80 | } |
| 81 | |
| 82 | static jint android_view_Display_getOrientation( |
| 83 | JNIEnv* env, jobject clazz) |
| 84 | { |
| 85 | DisplayID dpy = env->GetIntField(clazz, offsets.display); |
| 86 | return SurfaceComposerClient::getDisplayOrientation(dpy); |
| 87 | } |
| 88 | |
| 89 | static jint android_view_Display_getDisplayCount( |
| 90 | JNIEnv* env, jclass clazz) |
| 91 | { |
| 92 | return SurfaceComposerClient::getNumberOfDisplays(); |
| 93 | } |
| 94 | |
| 95 | // ---------------------------------------------------------------------------- |
| 96 | |
| 97 | const char* const kClassPathName = "android/view/Display"; |
| 98 | |
| 99 | static void nativeClassInit(JNIEnv* env, jclass clazz); |
| 100 | |
| 101 | static JNINativeMethod gMethods[] = { |
| 102 | { "nativeClassInit", "()V", |
| 103 | (void*)nativeClassInit }, |
| 104 | { "getDisplayCount", "()I", |
| 105 | (void*)android_view_Display_getDisplayCount }, |
| 106 | { "init", "(I)V", |
| 107 | (void*)android_view_Display_init }, |
| 108 | { "getWidth", "()I", |
| 109 | (void*)android_view_Display_getWidth }, |
| 110 | { "getHeight", "()I", |
| 111 | (void*)android_view_Display_getHeight }, |
| 112 | { "getOrientation", "()I", |
| 113 | (void*)android_view_Display_getOrientation } |
| 114 | }; |
| 115 | |
| 116 | void nativeClassInit(JNIEnv* env, jclass clazz) |
| 117 | { |
| 118 | offsets.display = env->GetFieldID(clazz, "mDisplay", "I"); |
| 119 | offsets.pixelFormat = env->GetFieldID(clazz, "mPixelFormat", "I"); |
| 120 | offsets.fps = env->GetFieldID(clazz, "mRefreshRate", "F"); |
| 121 | offsets.density = env->GetFieldID(clazz, "mDensity", "F"); |
| 122 | offsets.xdpi = env->GetFieldID(clazz, "mDpiX", "F"); |
| 123 | offsets.ydpi = env->GetFieldID(clazz, "mDpiY", "F"); |
| 124 | } |
| 125 | |
| 126 | int register_android_view_Display(JNIEnv* env) |
| 127 | { |
| 128 | return AndroidRuntime::registerNativeMethods(env, |
| 129 | kClassPathName, gMethods, NELEM(gMethods)); |
| 130 | } |
| 131 | |
| 132 | }; |
| 133 | |