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/*
* 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 "RemoteDisplay"
#include "jni.h"
#include "JNIHelp.h"
#include "android_os_Parcel.h"
#include "android_util_Binder.h"
#include "core_jni_helpers.h"
#include <android_runtime/android_view_Surface.h>
#include <android_runtime/Log.h>
#include <binder/IServiceManager.h>
#include <gui/IGraphicBufferProducer.h>
#include <media/IMediaPlayerService.h>
#include <media/IRemoteDisplay.h>
#include <media/IRemoteDisplayClient.h>
#include <utils/Log.h>
#include <ScopedUtfChars.h>
namespace android {
static struct {
jmethodID notifyDisplayConnected;
jmethodID notifyDisplayDisconnected;
jmethodID notifyDisplayError;
} gRemoteDisplayClassInfo;
// ----------------------------------------------------------------------------
class NativeRemoteDisplayClient : public BnRemoteDisplayClient {
public:
NativeRemoteDisplayClient(JNIEnv* env, jobject remoteDisplayObj) :
mRemoteDisplayObjGlobal(env->NewGlobalRef(remoteDisplayObj)) {
}
protected:
~NativeRemoteDisplayClient() {
JNIEnv* env = AndroidRuntime::getJNIEnv();
env->DeleteGlobalRef(mRemoteDisplayObjGlobal);
}
public:
virtual void onDisplayConnected(const sp<IGraphicBufferProducer>& bufferProducer,
uint32_t width, uint32_t height, uint32_t flags, uint32_t session) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jobject surfaceObj = android_view_Surface_createFromIGraphicBufferProducer(env, bufferProducer);
if (surfaceObj == NULL) {
ALOGE("Could not create Surface from surface texture %p provided by media server.",
bufferProducer.get());
return;
}
env->CallVoidMethod(mRemoteDisplayObjGlobal,
gRemoteDisplayClassInfo.notifyDisplayConnected,
surfaceObj, width, height, flags, session);
env->DeleteLocalRef(surfaceObj);
checkAndClearExceptionFromCallback(env, "notifyDisplayConnected");
}
virtual void onDisplayDisconnected() {
JNIEnv* env = AndroidRuntime::getJNIEnv();
env->CallVoidMethod(mRemoteDisplayObjGlobal,
gRemoteDisplayClassInfo.notifyDisplayDisconnected);
checkAndClearExceptionFromCallback(env, "notifyDisplayDisconnected");
}
virtual void onDisplayError(int32_t error) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
env->CallVoidMethod(mRemoteDisplayObjGlobal,
gRemoteDisplayClassInfo.notifyDisplayError, error);
checkAndClearExceptionFromCallback(env, "notifyDisplayError");
}
private:
jobject mRemoteDisplayObjGlobal;
static void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
if (env->ExceptionCheck()) {
ALOGE("An exception was thrown by callback '%s'.", methodName);
LOGE_EX(env);
env->ExceptionClear();
}
}
};
class NativeRemoteDisplay {
public:
NativeRemoteDisplay(const sp<IRemoteDisplay>& display,
const sp<NativeRemoteDisplayClient>& client) :
mDisplay(display), mClient(client) {
}
~NativeRemoteDisplay() {
mDisplay->dispose();
}
void pause() {
mDisplay->pause();
}
void resume() {
mDisplay->resume();
}
private:
sp<IRemoteDisplay> mDisplay;
sp<NativeRemoteDisplayClient> mClient;
};
// ----------------------------------------------------------------------------
static jlong nativeListen(JNIEnv* env, jobject remoteDisplayObj, jstring ifaceStr,
jstring opPackageNameStr) {
ScopedUtfChars iface(env, ifaceStr);
ScopedUtfChars opPackageName(env, opPackageNameStr);
sp<IServiceManager> sm = defaultServiceManager();
sp<IMediaPlayerService> service = interface_cast<IMediaPlayerService>(
sm->getService(String16("media.player")));
if (service == NULL) {
ALOGE("Could not obtain IMediaPlayerService from service manager");
return 0;
}
sp<NativeRemoteDisplayClient> client(new NativeRemoteDisplayClient(env, remoteDisplayObj));
sp<IRemoteDisplay> display = service->listenForRemoteDisplay(String16(opPackageName.c_str()),
client, String8(iface.c_str()));
if (display == NULL) {
ALOGE("Media player service rejected request to listen for remote display '%s'.",
iface.c_str());
return 0;
}
NativeRemoteDisplay* wrapper = new NativeRemoteDisplay(display, client);
return reinterpret_cast<jlong>(wrapper);
}
static void nativePause(JNIEnv* env, jobject remoteDisplayObj, jlong ptr) {
NativeRemoteDisplay* wrapper = reinterpret_cast<NativeRemoteDisplay*>(ptr);
wrapper->pause();
}
static void nativeResume(JNIEnv* env, jobject remoteDisplayObj, jlong ptr) {
NativeRemoteDisplay* wrapper = reinterpret_cast<NativeRemoteDisplay*>(ptr);
wrapper->resume();
}
static void nativeDispose(JNIEnv* env, jobject remoteDisplayObj, jlong ptr) {
NativeRemoteDisplay* wrapper = reinterpret_cast<NativeRemoteDisplay*>(ptr);
delete wrapper;
}
// ----------------------------------------------------------------------------
static const JNINativeMethod gMethods[] = {
{"nativeListen", "(Ljava/lang/String;Ljava/lang/String;)J",
(void*)nativeListen },
{"nativeDispose", "(J)V",
(void*)nativeDispose },
{"nativePause", "(J)V",
(void*)nativePause },
{"nativeResume", "(J)V",
(void*)nativeResume },
};
int register_android_media_RemoteDisplay(JNIEnv* env)
{
int err = RegisterMethodsOrDie(env, "android/media/RemoteDisplay", gMethods, NELEM(gMethods));
jclass clazz = FindClassOrDie(env, "android/media/RemoteDisplay");
gRemoteDisplayClassInfo.notifyDisplayConnected = GetMethodIDOrDie(env,
clazz, "notifyDisplayConnected", "(Landroid/view/Surface;IIII)V");
gRemoteDisplayClassInfo.notifyDisplayDisconnected = GetMethodIDOrDie(env,
clazz, "notifyDisplayDisconnected", "()V");
gRemoteDisplayClassInfo.notifyDisplayError = GetMethodIDOrDie(env,
clazz, "notifyDisplayError", "(I)V");
return err;
}
};
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