18db49a462
Fix indentation to be multiple of 4. Make it easier to search: sp< not sp < to "switch (...)" instead of "switch(...)" (also "if" and "while") Remove redundant blank line at start or EOF. Remove whitespace at end of line. Remove extra blank lines where they don't add value. Use git diff -b or -w to verify. Change-Id: I966b7ba852faa5474be6907fb212f5e267c2874e
112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
/*
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** Copyright 2010, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "IMediaDeathNotifier"
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#include <utils/Log.h>
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#include <binder/IServiceManager.h>
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#include <binder/IPCThreadState.h>
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#include <media/IMediaDeathNotifier.h>
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namespace android {
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// client singleton for binder interface to services
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Mutex IMediaDeathNotifier::sServiceLock;
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sp<IMediaPlayerService> IMediaDeathNotifier::sMediaPlayerService;
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sp<IMediaDeathNotifier::DeathNotifier> IMediaDeathNotifier::sDeathNotifier;
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SortedVector< wp<IMediaDeathNotifier> > IMediaDeathNotifier::sObitRecipients;
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// establish binder interface to MediaPlayerService
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/*static*/const sp<IMediaPlayerService>&
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IMediaDeathNotifier::getMediaPlayerService()
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{
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ALOGV("getMediaPlayerService");
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Mutex::Autolock _l(sServiceLock);
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if (sMediaPlayerService == 0) {
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sp<IServiceManager> sm = defaultServiceManager();
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sp<IBinder> binder;
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do {
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binder = sm->getService(String16("media.player"));
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if (binder != 0) {
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break;
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}
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ALOGW("Media player service not published, waiting...");
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usleep(500000); // 0.5 s
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} while (true);
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if (sDeathNotifier == NULL) {
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sDeathNotifier = new DeathNotifier();
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}
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binder->linkToDeath(sDeathNotifier);
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sMediaPlayerService = interface_cast<IMediaPlayerService>(binder);
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}
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ALOGE_IF(sMediaPlayerService == 0, "no media player service!?");
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return sMediaPlayerService;
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}
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/*static*/ void
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IMediaDeathNotifier::addObitRecipient(const wp<IMediaDeathNotifier>& recipient)
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{
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ALOGV("addObitRecipient");
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Mutex::Autolock _l(sServiceLock);
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sObitRecipients.add(recipient);
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}
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/*static*/ void
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IMediaDeathNotifier::removeObitRecipient(const wp<IMediaDeathNotifier>& recipient)
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{
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ALOGV("removeObitRecipient");
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Mutex::Autolock _l(sServiceLock);
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sObitRecipients.remove(recipient);
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}
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void
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IMediaDeathNotifier::DeathNotifier::binderDied(const wp<IBinder>& who) {
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ALOGW("media server died");
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// Need to do this with the lock held
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SortedVector< wp<IMediaDeathNotifier> > list;
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{
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Mutex::Autolock _l(sServiceLock);
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sMediaPlayerService.clear();
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list = sObitRecipients;
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}
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// Notify application when media server dies.
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// Don't hold the static lock during callback in case app
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// makes a call that needs the lock.
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size_t count = list.size();
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for (size_t iter = 0; iter < count; ++iter) {
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sp<IMediaDeathNotifier> notifier = list[iter].promote();
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if (notifier != 0) {
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notifier->died();
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}
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}
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}
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IMediaDeathNotifier::DeathNotifier::~DeathNotifier()
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{
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ALOGV("DeathNotifier::~DeathNotifier");
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Mutex::Autolock _l(sServiceLock);
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sObitRecipients.clear();
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if (sMediaPlayerService != 0) {
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sMediaPlayerService->asBinder()->unlinkToDeath(this);
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}
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}
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}; // namespace android
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