Media server death nodification (34bbc22c) · Commits · e / os / android_frameworks_base

include/media/IMediaDeathNotifier.h

0 → 100644

+61 −0

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		/*
		* Copyright (C) 2010 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.
		*/

		#ifndef ANDROID_IMEDIADEATHNOTIFIER_H
		#define ANDROID_IMEDIADEATHNOTIFIER_H

		#include <utils/threads.h>
		#include <media/IMediaPlayerService.h>
		#include <utils/SortedVector.h>

		namespace android {

		class IMediaDeathNotifier: virtual public RefBase
		{
		public:
		IMediaDeathNotifier() { addObitRecipient(this); }
		virtual ~IMediaDeathNotifier() { removeObitRecipient(this); }

		virtual void died() = 0;
		static const sp<IMediaPlayerService>& getMediaPlayerService();

		private:
		IMediaDeathNotifier &operator=(const IMediaDeathNotifier &);
		IMediaDeathNotifier(const IMediaDeathNotifier &);

		static void addObitRecipient(const wp<IMediaDeathNotifier>& recipient);
		static void removeObitRecipient(const wp<IMediaDeathNotifier>& recipient);

		class DeathNotifier: public IBinder::DeathRecipient
		{
		public:
		DeathNotifier() {}
		virtual ~DeathNotifier();

		virtual void binderDied(const wp<IBinder>& who);
		};

		friend class DeathNotifier;

		static Mutex sServiceLock;
		static sp<IMediaPlayerService> sMediaPlayerService;
		static sp<DeathNotifier> sDeathNotifier;
		static SortedVector< wp<IMediaDeathNotifier> > sObitRecipients;
		};

		}; // namespace android

		#endif // ANDROID_IMEDIADEATHNOTIFIER_H

include/media/mediaplayer.h

+4 −24

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		@@ -21,8 +21,7 @@
		#include <ui/Surface.h>
		#include <media/IMediaPlayerClient.h>
		#include <media/IMediaPlayer.h>
		#include <media/IMediaPlayerService.h>
		#include <utils/SortedVector.h>
		#include <media/IMediaDeathNotifier.h>

		namespace android {

		@@ -123,12 +122,13 @@ public:
		virtual void notify(int msg, int ext1, int ext2) = 0;
		};

		class MediaPlayer : public BnMediaPlayerClient
		class MediaPlayer : public BnMediaPlayerClient,
		public virtual IMediaDeathNotifier
		{
		public:
		MediaPlayer();
		~MediaPlayer();
		void onFirstRef();
		void died();
		void disconnect();
		status_t setDataSource(const char *url);
		status_t setDataSource(int fd, int64_t offset, int64_t length);
		@@ -164,19 +164,6 @@ private:
		status_t getDuration_l(int *msec);
		status_t setDataSource(const sp<IMediaPlayer>& player);

		static const sp<IMediaPlayerService>& getMediaPlayerService();
		static void addObitRecipient(const wp<MediaPlayer>& recipient);
		static void removeObitRecipient(const wp<MediaPlayer>& recipient);

		class DeathNotifier: public IBinder::DeathRecipient
		{
		public:
		DeathNotifier() {}
		virtual ~DeathNotifier();

		virtual void binderDied(const wp<IBinder>& who);
		};

		sp<IMediaPlayer> mPlayer;
		thread_id_t mLockThreadId;
		Mutex mLock;
		@@ -196,13 +183,6 @@ private:
		float mRightVolume;
		int mVideoWidth;
		int mVideoHeight;

		friend class DeathNotifier;

		static Mutex sServiceLock;
		static sp<IMediaPlayerService> sMediaPlayerService;
		static sp<DeathNotifier> sDeathNotifier;
		static SortedVector< wp<MediaPlayer> > sObitRecipients;
		};

		}; // namespace android

include/media/mediarecorder.h

+4 −1

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		@@ -23,6 +23,7 @@
		#include <utils/List.h>
		#include <utils/Errors.h>
		#include <media/IMediaPlayerClient.h>
		#include <media/IMediaDeathNotifier.h>

		namespace android {

		@@ -145,12 +146,14 @@ public:
		virtual void notify(int msg, int ext1, int ext2) = 0;
		};

		class MediaRecorder : public BnMediaPlayerClient
		class MediaRecorder : public BnMediaPlayerClient,
		public virtual IMediaDeathNotifier
		{
		public:
		MediaRecorder();
		~MediaRecorder();

		void died();
		status_t initCheck();
		status_t setCamera(const sp<ICamera>& camera);
		status_t setPreviewSurface(const sp<Surface>& surface);

media/libmedia/Android.mk

+2 −1

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		@@ -24,7 +24,8 @@ LOCAL_SRC_FILES:= \
		IAudioPolicyService.cpp \
		MediaScanner.cpp \
		MediaScannerClient.cpp \
		autodetect.cpp
		autodetect.cpp \
		IMediaDeathNotifier.cpp

		LOCAL_SHARED_LIBRARIES := \
		libui libcutils libutils libbinder libsonivox libicuuc

media/libmedia/IMediaDeathNotifier.cpp

0 → 100644

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		/*
		** Copyright 2010, 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_NDEBUG 0
		#define LOG_TAG "IMediaDeathNotifier"
		#include <utils/Log.h>

		#include <binder/IServiceManager.h>
		#include <binder/IPCThreadState.h>
		#include <media/IMediaDeathNotifier.h>

		namespace android {

		// client singleton for binder interface to services
		Mutex IMediaDeathNotifier::sServiceLock;
		sp<IMediaPlayerService> IMediaDeathNotifier::sMediaPlayerService;
		sp<IMediaDeathNotifier::DeathNotifier> IMediaDeathNotifier::sDeathNotifier;
		SortedVector< wp<IMediaDeathNotifier> > IMediaDeathNotifier::sObitRecipients;

		// establish binder interface to MediaPlayerService
		/static/const sp<IMediaPlayerService>&
		IMediaDeathNotifier::getMediaPlayerService()
		{
		LOGV("getMediaPlayerService");
		Mutex::Autolock _l(sServiceLock);
		if (sMediaPlayerService.get() == 0) {
		sp<IServiceManager> sm = defaultServiceManager();
		sp<IBinder> binder;
		do {
		binder = sm->getService(String16("media.player"));
		if (binder != 0) {
		break;
		}
		LOGW("Media player service not published, waiting...");
		usleep(500000); // 0.5 s
		} while(true);

		if (sDeathNotifier == NULL) {
		sDeathNotifier = new DeathNotifier();
		}
		binder->linkToDeath(sDeathNotifier);
		sMediaPlayerService = interface_cast<IMediaPlayerService>(binder);
		}
		LOGE_IF(sMediaPlayerService == 0, "no media player service!?");
		return sMediaPlayerService;
		}

		/static/ void
		IMediaDeathNotifier::addObitRecipient(const wp<IMediaDeathNotifier>& recipient)
		{
		LOGV("addObitRecipient");
		Mutex::Autolock _l(sServiceLock);
		sObitRecipients.add(recipient);
		}

		/static/ void
		IMediaDeathNotifier::removeObitRecipient(const wp<IMediaDeathNotifier>& recipient)
		{
		LOGV("removeObitRecipient");
		Mutex::Autolock _l(sServiceLock);
		sObitRecipients.remove(recipient);
		}

		void
		IMediaDeathNotifier::DeathNotifier::binderDied(const wp<IBinder>& who) {
		LOGW("media server died");

		// Need to do this with the lock held
		SortedVector< wp<IMediaDeathNotifier> > list;
		{
		Mutex::Autolock _l(sServiceLock);
		sMediaPlayerService.clear();
		list = sObitRecipients;
		}

		// Notify application when media server dies.
		// Don't hold the static lock during callback in case app
		// makes a call that needs the lock.
		size_t count = list.size();
		for (size_t iter = 0; iter < count; ++iter) {
		sp<IMediaDeathNotifier> notifier = list[iter].promote();
		if (notifier != 0) {
		notifier->died();
		}
		}
		}

		IMediaDeathNotifier::DeathNotifier::~DeathNotifier()
		{
		LOGV("DeathNotifier::~DeathNotifier");
		Mutex::Autolock _l(sServiceLock);
		sObitRecipients.clear();
		if (sMediaPlayerService != 0) {
		sMediaPlayerService->asBinder()->unlinkToDeath(this);
		}
		}

		}; // namespace android