Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 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 | #define LOG_TAG "RemoteDisplay" |
| 18 | |
| 19 | #include "jni.h" |
| 20 | #include "JNIHelp.h" |
| 21 | |
| 22 | #include "android_os_Parcel.h" |
| 23 | #include "android_util_Binder.h" |
| 24 | |
| 25 | #include <android_runtime/AndroidRuntime.h> |
| 26 | #include <android_runtime/android_view_Surface.h> |
| 27 | |
| 28 | #include <binder/IServiceManager.h> |
| 29 | |
| 30 | #include <gui/ISurfaceTexture.h> |
| 31 | |
| 32 | #include <media/IMediaPlayerService.h> |
| 33 | #include <media/IRemoteDisplay.h> |
| 34 | #include <media/IRemoteDisplayClient.h> |
| 35 | |
| 36 | #include <utils/Log.h> |
| 37 | |
| 38 | #include <ScopedUtfChars.h> |
| 39 | |
| 40 | namespace android { |
| 41 | |
| 42 | static struct { |
| 43 | jmethodID notifyDisplayConnected; |
| 44 | jmethodID notifyDisplayDisconnected; |
| 45 | jmethodID notifyDisplayError; |
| 46 | } gRemoteDisplayClassInfo; |
| 47 | |
| 48 | // ---------------------------------------------------------------------------- |
| 49 | |
| 50 | class NativeRemoteDisplayClient : public BnRemoteDisplayClient { |
| 51 | public: |
| 52 | NativeRemoteDisplayClient(JNIEnv* env, jobject remoteDisplayObj) : |
| 53 | mRemoteDisplayObjGlobal(env->NewGlobalRef(remoteDisplayObj)) { |
| 54 | } |
| 55 | |
| 56 | protected: |
| 57 | ~NativeRemoteDisplayClient() { |
| 58 | JNIEnv* env = AndroidRuntime::getJNIEnv(); |
| 59 | env->DeleteGlobalRef(mRemoteDisplayObjGlobal); |
| 60 | } |
| 61 | |
| 62 | public: |
| 63 | virtual void onDisplayConnected(const sp<ISurfaceTexture>& surfaceTexture, |
| 64 | uint32_t width, uint32_t height, uint32_t flags) { |
| 65 | JNIEnv* env = AndroidRuntime::getJNIEnv(); |
| 66 | |
| 67 | jobject surfaceObj = android_view_Surface_createFromISurfaceTexture(env, surfaceTexture); |
| 68 | if (surfaceObj == NULL) { |
| 69 | ALOGE("Could not create Surface from surface texture %p provided by media server.", |
| 70 | surfaceTexture.get()); |
| 71 | return; |
| 72 | } |
| 73 | |
| 74 | env->CallVoidMethod(mRemoteDisplayObjGlobal, |
| 75 | gRemoteDisplayClassInfo.notifyDisplayConnected, |
| 76 | surfaceObj, width, height, flags); |
| 77 | env->DeleteLocalRef(surfaceObj); |
| 78 | checkAndClearExceptionFromCallback(env, "notifyDisplayConnected"); |
| 79 | } |
| 80 | |
| 81 | virtual void onDisplayDisconnected() { |
| 82 | JNIEnv* env = AndroidRuntime::getJNIEnv(); |
| 83 | |
| 84 | env->CallVoidMethod(mRemoteDisplayObjGlobal, |
| 85 | gRemoteDisplayClassInfo.notifyDisplayDisconnected); |
| 86 | checkAndClearExceptionFromCallback(env, "notifyDisplayDisconnected"); |
| 87 | } |
| 88 | |
| 89 | virtual void onDisplayError(int32_t error) { |
| 90 | JNIEnv* env = AndroidRuntime::getJNIEnv(); |
| 91 | |
| 92 | env->CallVoidMethod(mRemoteDisplayObjGlobal, |
| 93 | gRemoteDisplayClassInfo.notifyDisplayError, error); |
| 94 | checkAndClearExceptionFromCallback(env, "notifyDisplayError"); |
| 95 | } |
| 96 | |
| 97 | private: |
| 98 | jobject mRemoteDisplayObjGlobal; |
| 99 | |
| 100 | static void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) { |
| 101 | if (env->ExceptionCheck()) { |
| 102 | ALOGE("An exception was thrown by callback '%s'.", methodName); |
| 103 | LOGE_EX(env); |
| 104 | env->ExceptionClear(); |
| 105 | } |
| 106 | } |
| 107 | }; |
| 108 | |
| 109 | class NativeRemoteDisplay { |
| 110 | public: |
| 111 | NativeRemoteDisplay(const sp<IRemoteDisplay>& display, |
| 112 | const sp<NativeRemoteDisplayClient>& client) : |
| 113 | mDisplay(display), mClient(client) { |
| 114 | } |
| 115 | |
| 116 | ~NativeRemoteDisplay() { |
| 117 | mDisplay->dispose(); |
| 118 | } |
| 119 | |
| 120 | private: |
| 121 | sp<IRemoteDisplay> mDisplay; |
| 122 | sp<NativeRemoteDisplayClient> mClient; |
| 123 | }; |
| 124 | |
| 125 | |
| 126 | // ---------------------------------------------------------------------------- |
| 127 | |
| 128 | static jint nativeListen(JNIEnv* env, jobject remoteDisplayObj, jstring ifaceStr) { |
| 129 | ScopedUtfChars iface(env, ifaceStr); |
| 130 | |
| 131 | sp<IServiceManager> sm = defaultServiceManager(); |
| 132 | sp<IMediaPlayerService> service = interface_cast<IMediaPlayerService>( |
| 133 | sm->getService(String16("media.player"))); |
| 134 | if (service == NULL) { |
| 135 | ALOGE("Could not obtain IMediaPlayerService from service manager"); |
| 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | sp<NativeRemoteDisplayClient> client(new NativeRemoteDisplayClient(env, remoteDisplayObj)); |
| 140 | sp<IRemoteDisplay> display = service->listenForRemoteDisplay( |
| 141 | client, String8(iface.c_str())); |
| 142 | if (display == NULL) { |
| 143 | ALOGE("Media player service rejected request to listen for remote display '%s'.", |
| 144 | iface.c_str()); |
| 145 | return 0; |
| 146 | } |
| 147 | |
| 148 | NativeRemoteDisplay* wrapper = new NativeRemoteDisplay(display, client); |
| 149 | return reinterpret_cast<jint>(wrapper); |
| 150 | } |
| 151 | |
| 152 | static void nativeDispose(JNIEnv* env, jobject remoteDisplayObj, jint ptr) { |
| 153 | NativeRemoteDisplay* wrapper = reinterpret_cast<NativeRemoteDisplay*>(ptr); |
| 154 | delete wrapper; |
| 155 | } |
| 156 | |
| 157 | // ---------------------------------------------------------------------------- |
| 158 | |
| 159 | static JNINativeMethod gMethods[] = { |
| 160 | {"nativeListen", "(Ljava/lang/String;)I", |
| 161 | (void*)nativeListen }, |
| 162 | {"nativeDispose", "(I)V", |
| 163 | (void*)nativeDispose }, |
| 164 | }; |
| 165 | |
| 166 | int register_android_media_RemoteDisplay(JNIEnv* env) |
| 167 | { |
| 168 | int err = AndroidRuntime::registerNativeMethods(env, "android/media/RemoteDisplay", |
| 169 | gMethods, NELEM(gMethods)); |
| 170 | |
| 171 | jclass clazz = env->FindClass("android/media/RemoteDisplay"); |
| 172 | gRemoteDisplayClassInfo.notifyDisplayConnected = |
| 173 | env->GetMethodID(clazz, "notifyDisplayConnected", |
| 174 | "(Landroid/view/Surface;III)V"); |
| 175 | gRemoteDisplayClassInfo.notifyDisplayDisconnected = |
| 176 | env->GetMethodID(clazz, "notifyDisplayDisconnected", "()V"); |
| 177 | gRemoteDisplayClassInfo.notifyDisplayError = |
| 178 | env->GetMethodID(clazz, "notifyDisplayError", "(I)V"); |
| 179 | return err; |
| 180 | } |
| 181 | |
| 182 | }; |