mediametadataretriever.cpp revision af8791e112c8072452bd14ef3c43a47511d19542
106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy/* 206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** 306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** Copyright 2008, The Android Open Source Project 406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** 506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** Licensed under the Apache License, Version 2.0 (the "License"); 606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** you may not use this file except in compliance with the License. 706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** You may obtain a copy of the License at 806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** 906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** http://www.apache.org/licenses/LICENSE-2.0 1006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** 1106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** Unless required by applicable law or agreed to in writing, software 1206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** distributed under the License is distributed on an "AS IS" BASIS, 1306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** See the License for the specific language governing permissions and 1506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy** limitations under the License. 1606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy*/ 175b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy 185b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy//#define LOG_NDEBUG 0 1906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy#define LOG_TAG "MediaMetadataRetriever" 20922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik 21922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik#include <binder/IServiceManager.h> 2206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy#include <binder/IPCThreadState.h> 2306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy#include <media/mediametadataretriever.h> 24922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik#include <media/IMediaPlayerService.h> 257953745dd565167113f8cbfc461bc0521d32d870Romain Guy#include <utils/Log.h> 267953745dd565167113f8cbfc461bc0521d32d870Romain Guy#include <dlfcn.h> 2706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 2806f96e2652e4855b6520ad9dd70583677605b79aRomain Guynamespace android { 2906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 308aa195d7081b889f3a7b1f426cbd8556377aae5eRomain Guy// client singleton for binder interface to service 312dc236b2bae13b9a0ed9b3f7320502aecd7983b3Tom HudsonMutex MediaMetadataRetriever::sServiceLock; 32922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craiksp<IMediaPlayerService> MediaMetadataRetriever::sService; 3373edbfeed0536dd4c55fc97b7dfc6ce105483c77Tom Hudsonsp<MediaMetadataRetriever::DeathNotifier> MediaMetadataRetriever::sDeathNotifier; 3406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 3506f96e2652e4855b6520ad9dd70583677605b79aRomain Guyconst sp<IMediaPlayerService>& MediaMetadataRetriever::getService() 36d1ad5e62fda248c6d185cde3cb6d9f01a223066cLeon Scroggins III{ 37922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik Mutex::Autolock lock(sServiceLock); 38922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik if (sService.get() == 0) { 39922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik sp<IServiceManager> sm = defaultServiceManager(); 40922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik sp<IBinder> binder; 4106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy do { 42d1ad5e62fda248c6d185cde3cb6d9f01a223066cLeon Scroggins III binder = sm->getService(String16("media.player")); 43922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik if (binder != 0) { 44922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik break; 45922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik } 46922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik LOGW("MediaPlayerService not published, waiting..."); 47922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik usleep(500000); // 0.5 s 48922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik } while(true); 49922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik if (sDeathNotifier == NULL) { 50922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik sDeathNotifier = new DeathNotifier(); 51922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik } 52922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik binder->linkToDeath(sDeathNotifier); 53922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik sService = interface_cast<IMediaPlayerService>(binder); 54922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik } 55922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik LOGE_IF(sService == 0, "no MediaPlayerService!?"); 56922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik return sService; 57922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik} 58922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik 59922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris CraikMediaMetadataRetriever::MediaMetadataRetriever() 60922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik{ 61922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik LOGV("constructor"); 62922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik const sp<IMediaPlayerService>& service(getService()); 63922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik if (service == 0) { 64922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik LOGE("failed to obtain MediaMetadataRetrieverService"); 65922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik return; 66922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik } 67922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik sp<IMediaMetadataRetriever> retriever(service->createMetadataRetriever(getpid())); 68922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik if (retriever == 0) { 69922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik LOGE("failed to create IMediaMetadataRetriever object from server"); 70922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik } 71922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik mRetriever = retriever; 72d1ad5e62fda248c6d185cde3cb6d9f01a223066cLeon Scroggins III} 73d1ad5e62fda248c6d185cde3cb6d9f01a223066cLeon Scroggins III 74564acf7c9bff822f608cda0d5df0a64a9f9aaefdChris CraikMediaMetadataRetriever::~MediaMetadataRetriever() 75564acf7c9bff822f608cda0d5df0a64a9f9aaefdChris Craik{ 7653e51e4aa933f9603587e1780f446c18816bf9beChris Craik LOGV("destructor"); 77922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik disconnect(); 78922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9Chris Craik IPCThreadState::self()->flushCommands(); 79253f2c213f6ecda63b6872aee77bd30d5ec07c82Romain Guy} 80253f2c213f6ecda63b6872aee77bd30d5ec07c82Romain Guy 81d1ad5e62fda248c6d185cde3cb6d9f01a223066cLeon Scroggins IIIvoid MediaMetadataRetriever::disconnect() 82d1ad5e62fda248c6d185cde3cb6d9f01a223066cLeon Scroggins III{ 8306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy LOGV("disconnect"); 8406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy sp<IMediaMetadataRetriever> retriever; 8506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy { 865b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy Mutex::Autolock _l(mLock); 87 retriever = mRetriever; 88 mRetriever.clear(); 89 } 90 if (retriever != 0) { 91 retriever->disconnect(); 92 } 93} 94 95status_t MediaMetadataRetriever::setDataSource( 96 const char *srcUrl, const KeyedVector<String8, String8> *headers) 97{ 98 LOGV("setDataSource"); 99 Mutex::Autolock _l(mLock); 100 if (mRetriever == 0) { 101 LOGE("retriever is not initialized"); 102 return INVALID_OPERATION; 103 } 104 if (srcUrl == NULL) { 105 LOGE("data source is a null pointer"); 106 return UNKNOWN_ERROR; 107 } 108 LOGV("data source (%s)", srcUrl); 109 return mRetriever->setDataSource(srcUrl, headers); 110} 111 112status_t MediaMetadataRetriever::setDataSource(int fd, int64_t offset, int64_t length) 113{ 114 LOGV("setDataSource(%d, %lld, %lld)", fd, offset, length); 115 Mutex::Autolock _l(mLock); 116 if (mRetriever == 0) { 117 LOGE("retriever is not initialized"); 118 return INVALID_OPERATION; 119 } 120 if (fd < 0 || offset < 0 || length < 0) { 121 LOGE("Invalid negative argument"); 122 return UNKNOWN_ERROR; 123 } 124 return mRetriever->setDataSource(fd, offset, length); 125} 126 127sp<IMemory> MediaMetadataRetriever::getFrameAtTime(int64_t timeUs, int option) 128{ 129 LOGV("getFrameAtTime: time(%lld us) option(%d)", timeUs, option); 130 Mutex::Autolock _l(mLock); 131 if (mRetriever == 0) { 132 LOGE("retriever is not initialized"); 133 return NULL; 134 } 135 return mRetriever->getFrameAtTime(timeUs, option); 136} 137 138const char* MediaMetadataRetriever::extractMetadata(int keyCode) 139{ 140 LOGV("extractMetadata(%d)", keyCode); 141 Mutex::Autolock _l(mLock); 142 if (mRetriever == 0) { 143 LOGE("retriever is not initialized"); 144 return NULL; 145 } 146 return mRetriever->extractMetadata(keyCode); 147} 148 149sp<IMemory> MediaMetadataRetriever::extractAlbumArt() 150{ 151 LOGV("extractAlbumArt"); 152 Mutex::Autolock _l(mLock); 153 if (mRetriever == 0) { 154 LOGE("retriever is not initialized"); 155 return NULL; 156 } 157 return mRetriever->extractAlbumArt(); 158} 159 160void MediaMetadataRetriever::DeathNotifier::binderDied(const wp<IBinder>& who) { 161 Mutex::Autolock lock(MediaMetadataRetriever::sServiceLock); 162 MediaMetadataRetriever::sService.clear(); 163 LOGW("MediaMetadataRetriever server died!"); 164} 165 166MediaMetadataRetriever::DeathNotifier::~DeathNotifier() 167{ 168 Mutex::Autolock lock(sServiceLock); 169 if (sService != 0) { 170 sService->asBinder()->unlinkToDeath(this); 171 } 172} 173 174}; // namespace android 175