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最近公司正在做关于DLNA的项目，初期在网上大概了解了一些DLNA相关知识，可以用来开发的框架有Platinum，Cling和Cybergarage。同学们可以选择适合自己的框架进行学习开发，至于为什么选择Platinum库是因为他是一个跨平台的C++库，效率较高，稳定性也很强。
下载地址：
网上的示例帖子很少，有一大部分都是蓝斯老师的，在这里要感谢他。下面开始讲解利用Platinum库开发步骤:
1.NDK下的降Platinum库编译成so文件
大家可以参考这篇博文，讲解的很详细了。
下载的Platinum为1-0-5-13_0ab854版本，博文中提到的将LOCAL_LDLIBS&+=&-laxTls改为LOCAL_LDLIBS&+=&-laxTLS新版本已经修复了。
2.Platinum库c++的实现
大家可以在目录Platinum\Source\Platform\Android\module\platinum\jni\下找到platinum-jni.cpp，这里边有示例代码：
/*****************************************************************
Android JNI Interface
Plutinosoft LLC
Author: Sylvain Rebaud ()
****************************************************************/
/*----------------------------------------------------------------------
+---------------------------------------------------------------------*/
#include &assert.h&
#include &jni.h&
#include &string.h&
#include &sys/types.h&
#include &platinum-jni.h&
#include &Platinum.h&
#include &android/log.h&
/*----------------------------------------------------------------------
+---------------------------------------------------------------------*/
NPT_SET_LOCAL_LOGGER(&platinum.android.jni&)
/*----------------------------------------------------------------------
+---------------------------------------------------------------------*/
__attribute__((constructor)) static void onDlOpen(void)
/*----------------------------------------------------------------------
JNI_OnLoad
+---------------------------------------------------------------------*/
JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void* reserved)
NPT_LogManager::GetDefault().Configure(&plist:.level=FINE;.handlers=ConsoleH.ConsoleHandler.outputs=2;.ConsoleHandler.colors=.ConsoleHandler.filter=59&);
return JNI_VERSION_1_4;
com_plutinosoft_platinum_UPnP
* Signature: ()J
JNIEXPORT jlong JNICALL Java_com_plutinosoft_platinum_UPnP__1init(JNIEnv *env, jclass)
NPT_LOG_INFO(&init&);
PLT_UPnP* self = new PLT_UPnP();
return (jlong)
com_plutinosoft_platinum_UPnP
* Signature: (J)I
JNIEXPORT jint JNICALL Java_com_plutinosoft_platinum_UPnP__1start(JNIEnv *, jclass, jlong _self)
NPT_LOG_INFO(&start&);
PLT_UPnP* self = (PLT_UPnP*)_
return self-&Start();
com_plutinosoft_platinum_UPnP
* Signature: (J)I
JNIEXPORT jint JNICALL Java_com_plutinosoft_platinum_UPnP__1stop(JNIEnv *, jclass, jlong _self)
NPT_LOG_INFO(&stop&);
PLT_UPnP* self = (PLT_UPnP*)_
return self-&Stop();
编译后你会发现没有办法开启一个设备，因为PLT_UPnP中并没有加入PLT_DeviceHostReference对象，所以不能开启设备。但是在\Platinum\Source\Tests\MediaRenderer目录下大家可以找到MediaRendererTest.cpp文件：
/*****************************************************************
Platinum - Test UPnP A/V MediaRenderer
| Copyright (c) , Plutinosoft, LLC.
| All rights reserved.
| This prog you can redistribute it and/or
| modify it under the terms of the GNU General Public License
| as published by the Free Software F either version 2
| of the License, or (at your option) any later version.
| OEMs, ISVs, VARs and other distributors that combine and
| distribute commercially licensed software with Platinum software
| and do not wish to distribute the source code for the commercially
| licensed software under version 2, or (at your option) any later
| version, of the GNU General Public License (the &GPL&) must enter
| into a commercial license agreement with Plutinosoft, LLC.
| This program is distributed in the hope that it will be useful,
| but WITHOUT ANY WARRANTY; without even the implied warranty of
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
| GNU General Public License for more details.
| You should have received a copy of the GNU General Public License
| alo see the file LICENSE.txt. If not, write to
| the Free Software Foundation, Inc.,
| 51 Franklin Street, Fifth Floor, Boston, MA
| http://www.gnu.org/licenses/gpl-2.0.html
****************************************************************/
/*----------------------------------------------------------------------
+---------------------------------------------------------------------*/
#include &PltUPnP.h&
#include &PltMediaRenderer.h&
#include &stdlib.h&
/*----------------------------------------------------------------------
+---------------------------------------------------------------------*/
struct Options {
const char* friendly_
/*----------------------------------------------------------------------
PrintUsageAndExit
+---------------------------------------------------------------------*/
static void
PrintUsageAndExit(char** args)
fprintf(stderr, &usage: %s [-f &friendly_name&]\n&, args[0]);
fprintf(stderr, &-f : optional upnp server friendly name\n&);
fprintf(stderr, &&path& : local path to serve\n&);
/*----------------------------------------------------------------------
ParseCommandLine
+---------------------------------------------------------------------*/
static void
ParseCommandLine(char** args)
const char*
tmp = args+1;
/* default values */
Options.friendly_name = NULL;
while ((arg = *tmp++)) {
if (!strcmp(arg, &-f&)) {
Options.friendly_name = *tmp++;
fprintf(stderr, &ERROR: too many arguments\n&);
PrintUsageAndExit(args);
/*----------------------------------------------------------------------
+---------------------------------------------------------------------*/
main(int /* argc */, char** argv)
/* parse command line */
ParseCommandLine(argv);
PLT_DeviceHostReference device(
new PLT_MediaRenderer(Options.friendly_name?Options.friendly_name:&Platinum Media Renderer&,
&ec7-2d91-2fb5-b757f2537e21&));
upnp.AddDevice(device);
bool added =
upnp.Start();
char buf[256];
while (gets(buf)) {
if (*buf == 'q')
if (*buf == 's') {
if (added) {
upnp.RemoveDevice(device);
upnp.AddDevice(device);
upnp.Stop();
可以看到代码中构建了一个PLT_DeviceHostReference对象，然后用upnp.AddDevice(device)添加进去，就可以正常开启一个dmr设备了。（我在实现自己的platinum-jni时，编译会报undefined reference to `PLT_MediaRenderer::PLT_MediaRenderer(char const*, bool, char const*, unsigned int, bool)的错误，可以尝试在mk文件中添加LOCAL_C_INCLUDES +=
$(PLT_SRC_ROOT)/Devices/MediaRenderer，问题解决）。
接下来我们要做的事情就是将c++中接受到的action事件反射到java层进行处理：
此时我们就要去\Platinum\Source\Devices\MediaRenderer目录下找PltMediaRenderer.cpp文件：
/*----------------------------------------------------------------------
PLT_MediaRenderer::OnAction
+---------------------------------------------------------------------*/
NPT_Result
PLT_MediaRenderer::OnAction(PLT_ActionReference&
const PLT_HttpRequestContext& context)
NPT_COMPILER_UNUSED(context);
/* parse the action name */
NPT_String name = action-&GetActionDesc().GetName();
// since all actions take an instance ID and we only support 1 instance
// verify that the Instance ID is 0 and return an error here now if not
NPT_String serviceType = action-&GetActionDesc().GetService()-&GetServiceType();
if (pare(&urn:schemas-upnp-org:service:AVTransport:1&, true) == 0) {
if (NPT_FAILED(action-&VerifyArgumentValue(&InstanceID&, &0&))) {
action-&SetError(718, &Not valid InstanceID&);
return NPT_FAILURE;
serviceType = action-&GetActionDesc().GetService()-&GetServiceType();
if (pare(&urn:schemas-upnp-org:service:RenderingControl:1&, true) == 0) {
if (NPT_FAILED(action-&VerifyArgumentValue(&InstanceID&, &0&))) {
action-&SetError(702, &Not valid InstanceID&);
return NPT_FAILURE;
/* Is it a ConnectionManager Service Action ? */
if (pare(&GetCurrentConnectionInfo&, true) == 0) {
return OnGetCurrentConnectionInfo(action);
/* Is it a AVTransport Service Action ? */
if (pare(&Next&, true) == 0) {
return OnNext(action);
if (pare(&Pause&, true) == 0) {
return OnPause(action);
if (pare(&Play&, true) == 0) {
return OnPlay(action);
if (pare(&Previous&, true) == 0) {
return OnPrevious(action);
if (pare(&Seek&, true) == 0) {
return OnSeek(action);
if (pare(&Stop&, true) == 0) {
return OnStop(action);
if (pare(&SetAVTransportURI&, true) == 0) {
return OnSetAVTransportURI(action);
if (pare(&SetPlayMode&, true) == 0) {
return OnSetPlayMode(action);
/* Is it a RendererControl Service Action ? */
if (pare(&SetVolume&, true) == 0) {
return OnSetVolume(action);
if (pare(&SetVolumeDB&, true) == 0) {
return OnSetVolumeDB(action);
if (pare(&GetVolumeDBRange&, true) == 0) {
return OnGetVolumeDBRange(action);
if (pare(&SetMute&, true) == 0) {
return OnSetMute(action);
// other actions rely on state variables
NPT_CHECK_LABEL_WARNING(action-&SetArgumentsOutFromStateVariable(), failure);
return NPT_SUCCESS;
action-&SetError(401,&No Such Action.&);
return NPT_FAILURE;
可以看到OnAction方法，此方法会在mediaRender设备接收到事件时调用
/*----------------------------------------------------------------------
PLT_MediaRenderer::OnNext
+---------------------------------------------------------------------*/
NPT_Result
PLT_MediaRenderer::OnNext(PLT_ActionReference& action)
if (m_Delegate) {
return m_Delegate-&OnNext(action);
return NPT_ERROR_NOT_IMPLEMENTED;
接着会调PltMediaRenderer的各种OnXXX(PLT_ActionReference& action)方法，在这里我们可以看到把action事件交给了m_Delegate来处理，所以我们要手动设置一个m_Delegate。在\Platinum\Source\Devices\MediaRenderer目录下有PltMediaRenderer.h头文件，定义了一个方法：// methods
virtual void SetDelegate(PLT_MediaRendererDelegate* delegate) { m_Delegate = }PLT_MediaRenderDelegate*
delegate是从这个方法里边设置进来的，所以我们需要继承PLT_MediaRenderDelagate来定义一个自己的子类，代码如下：
class IMediaActionReceiver : public PLT_MediaRendererDelegate
static const int MEDIA_RENDER_CTL_MSG_BASE = 0x100;
static const int MEDIA_RENDER_CTL_MSG_SET_AV_URL = (MEDIA_RENDER_CTL_MSG_BASE+0);
static const int MEDIA_RENDER_CTL_MSG_STOP = (MEDIA_RENDER_CTL_MSG_BASE+1);
static const int MEDIA_RENDER_CTL_MSG_PLAY = (MEDIA_RENDER_CTL_MSG_BASE+2);
static const int MEDIA_RENDER_CTL_MSG_PAUSE = (MEDIA_RENDER_CTL_MSG_BASE+3);
static const int MEDIA_RENDER_CTL_MSG_SEEK = (MEDIA_RENDER_CTL_MSG_BASE+4);
static const int MEDIA_RENDER_CTL_MSG_SETVOLUME = (MEDIA_RENDER_CTL_MSG_BASE+5);
static const int MEDIA_RENDER_CTL_MSG_SETMUTE = (MEDIA_RENDER_CTL_MSG_BASE+6);
static const int MEDIA_RENDER_CTL_MSG_SETPLAYMODE = (MEDIA_RENDER_CTL_MSG_BASE+7);
static const int MEDIA_RENDER_CTL_MSG_PRE = (MEDIA_RENDER_CTL_MSG_BASE+8);
static const int MEDIA_RENDER_CTL_MSG_NEXT = (MEDIA_RENDER_CTL_MSG_BASE+9);
virtual void ActionInflect(int cmd, const char* value, const char* data);
virtual NPT_Result OnGetCurrentConnectionInfo(PLT_ActionReference& action);
// AVTransport
virtual NPT_Result OnNext(PLT_ActionReference& action);
virtual NPT_Result OnPause(PLT_ActionReference& action);
virtual NPT_Result OnPlay(PLT_ActionReference& action);
virtual NPT_Result OnPrevious(PLT_ActionReference& action);
virtual NPT_Result OnSeek(PLT_ActionReference& action);
virtual NPT_Result OnStop(PLT_ActionReference& action);
virtual NPT_Result OnSetAVTransportURI(PLT_ActionReference& action);
virtual NPT_Result OnSetPlayMode(PLT_ActionReference& action);
// RenderingControl
virtual NPT_Result OnSetVolume(PLT_ActionReference& action);
virtual NPT_Result OnSetVolumeDB(PLT_ActionReference& action);
virtual NPT_Result OnGetVolumeDBRange(PLT_ActionReference& action);
virtual NPT_Result OnSetMute(PLT_ActionReference& action);
在相关代码中实现此类并且调用自己的ActionInflect方法来进行处理：
NPT_Result
IMediaActionReceiver::OnNext(PLT_ActionReference& action)
NPT_String curURI;
action-&GetArgumentValue(&CurrentURI&, curURI);
NPT_String metaD
action-&GetArgumentValue(&CurrentURIMetaData&, metaData);
ActionInflect(MEDIA_RENDER_CTL_MSG_NEXT, curURI.GetChars(),
metaData.GetChars());
return NPT_SUCCESS;
}ActionInflect方法代码如下：
IMediaActionReceiver::ActionInflect(int cmd, const char* value, const char* data)
NPT_LOG_INFO(&-------------------&@@@@@@@############.\n&);
JNIEnv *env = NULL;
bool isAttach =
status = jvm-&GetEnv((void**) &env, JNI_VERSION_1_4);
if(status != JNI_OK)
status = jvm-&AttachCurrentThread(&env, NULL);
if(status & 0) {
isAttach =
jstring valueString = NULL;
jstring dataString = NULL;
jclass inflectClass = g_inflectC
jmethodID inflectMethod = g_methodID;
if (inflectClass == NULL || inflectMethod == NULL)
valueString = env-&NewStringUTF(value);
dataString = env-&NewStringUTF(data);
env-&CallStaticVoidMethod(inflectClass, inflectMethod,valueString, dataString,cmd);
env-&DeleteLocalRef(valueString);
env-&DeleteLocalRef(dataString);
if (env-&ExceptionOccurred())
env-&ExceptionDescribe();
env-&ExceptionClear();
if (isAttach)
jvm-&DetachCurrentThread();
}其中jvm可以在JNI_OnLoad方法中得到，g_inflectClass跟g_methodID是你java层反射函数的Class跟方法ID(根据自身需求来定)。
下一步我们需要将事件状态值更新至所在服务列表
可以参考代码：
NPT_Result
PLT_MediaRenderer::SetupServices()
PLT_Service*
/* AVTransport */
service = new PLT_Service(
&urn:schemas-upnp-org:service:AVTransport:1&,
&urn:upnp-org:serviceId:AVTransport&,
&AVTransport&,
&urn:schemas-upnp-org:metadata-1-0/AVT/&);
NPT_CHECK_FATAL(service-&SetSCPDXML((const char*) RDR_AVTransportSCPD));
NPT_CHECK_FATAL(AddService(service));
service-&SetStateVariableRate(&LastChange&, NPT_TimeInterval(0.2f));
service-&SetStateVariable(&A_ARG_TYPE_InstanceID&, &0&);
// GetCurrentTransportActions
service-&SetStateVariable(&CurrentTransportActions&, &Play,Pause,Stop,Seek,Next,Previous&);
// GetDeviceCapabilities
service-&SetStateVariable(&PossiblePlaybackStorageMedia&, &NONE,NETWORK,HDD,CD-DA,UNKNOWN&);
service-&SetStateVariable(&PossibleRecordStorageMedia&, &NOT_IMPLEMENTED&);
service-&SetStateVariable(&PossibleRecordQualityModes&, &NOT_IMPLEMENTED&);
// GetMediaInfo
service-&SetStateVariable(&NumberOfTracks&, &0&);
service-&SetStateVariable(&CurrentMediaDuration&, &00:00:00&);
service-&SetStateVariable(&AVTransportURI&, &&);
service-&SetStateVariable(&AVTransportURIMetadata&, &&);;
service-&SetStateVariable(&NextAVTransportURI&, &NOT_IMPLEMENTED&);
service-&SetStateVariable(&NextAVTransportURIMetadata&, &NOT_IMPLEMENTED&);
service-&SetStateVariable(&PlaybackStorageMedium&, &NONE&);
service-&SetStateVariable(&RecordStorageMedium&, &NOT_IMPLEMENTED&);
service-&SetStateVariable(&RecordMediumWriteStatus&, &NOT_IMPLEMENTED&);
// GetPositionInfo
service-&SetStateVariable(&CurrentTrack&, &0&);
NPT_Result durResult = service-&SetStateVariable(&CurrentTrackDuration&, &00:00:00&);
service-&SetStateVariable(&CurrentTrackMetadata&, &&);
service-&SetStateVariable(&CurrentTrackURI&, &&);
NPT_Result relTimeResult = service-&SetStateVariable(&RelativeTimePosition&, &00:00:00&);
service-&SetStateVariable(&AbsoluteTimePosition&, &00:50:00&);
service-&SetStateVariable(&RelativeCounterPosition&, &&); // means NOT_IMPLEMENTED
service-&SetStateVariable(&AbsoluteCounterPosition&, &&); // means NOT_IMPLEMENTED
// disable indirect eventing for certain state variables
PLT_StateVariable*
var = service-&FindStateVariable(&RelativeTimePosition&);
if (var) var-&DisableIndirectEventing();
var = service-&FindStateVariable(&AbsoluteTimePosition&);
if (var) var-&DisableIndirectEventing();
var = service-&FindStateVariable(&RelativeCounterPosition&);
if (var) var-&DisableIndirectEventing();
var = service-&FindStateVariable(&AbsoluteCounterPosition&);
if (var) var-&DisableIndirectEventing();
// GetTransportInfo
service-&SetStateVariable(&TransportState&, &NO_MEDIA_PRESENT&);
service-&SetStateVariable(&TransportStatus&, &OK&);
service-&SetStateVariable(&TransportPlaySpeed&, &1&);
// GetTransportSettings
service-&SetStateVariable(&CurrentPlayMode&, &NORMAL&);
service-&SetStateVariable(&CurrentRecordQualityMode&, &NOT_IMPLEMENTED&);
/* ConnectionManager */
service = new PLT_Service(
&urn:schemas-upnp-org:service:ConnectionManager:1&,
&urn:upnp-org:serviceId:ConnectionManager&,
&ConnectionManager&);
NPT_CHECK_FATAL(service-&SetSCPDXML((const char*) RDR_ConnectionManagerSCPD));
NPT_CHECK_FATAL(AddService(service));
service-&SetStateVariable(&CurrentConnectionIDs&, &0&);
// put all supported mime types here instead
service-&SetStateVariable(&SinkProtocolInfo&, &http-get:*:video/x-ms-wmv:DLNA.ORG_PN=WMVMED_PRO,http-get:*:video/x-ms-asf:DLNA.ORG_PN=MPEG4_P2_ASF_SP_G726,http-get:*:video/x-ms-wmv:DLNA.ORG_PN=WMVMED_FULL,http-get:*:image/jpeg:DLNA.ORG_PN=JPEG_MED,http-get:*:video/x-ms-wmv:DLNA.ORG_PN=WMVMED_BASE,http-get:*:audio/L16;rate=44100;channels=1:DLNA.ORG_PN=LPCM,http-get:*:video/mpeg:DLNA.ORG_PN=MPEG_PS_PAL,http-get:*:video/mpeg:DLNA.ORG_PN=MPEG_PS_NTSC,http-get:*:video/x-ms-wmv:DLNA.ORG_PN=WMVHIGH_PRO,http-get:*:audio/L16;rate=44100;channels=2:DLNA.ORG_PN=LPCM,http-get:*:image/jpeg:DLNA.ORG_PN=JPEG_SM,http-get:*:video/x-ms-asf:DLNA.ORG_PN=VC1_ASF_AP_L1_WMA,http-get:*:audio/x-ms-wma:DLNA.ORG_PN=WMDRM_WMABASE,http-get:*:video/x-ms-wmv:DLNA.ORG_PN=WMVHIGH_FULL,http-get:*:audio/x-ms-wma:DLNA.ORG_PN=WMAFULL,http-get:*:audio/x-ms-wma:DLNA.ORG_PN=WMABASE,http-get:*:video/x-ms-wmv:DLNA.ORG_PN=WMVSPLL_BASE,http-get:*:video/mpeg:DLNA.ORG_PN=MPEG_PS_NTSC_XAC3,http-get:*:video/x-ms-wmv:DLNA.ORG_PN=WMDRM_WMVSPLL_BASE,http-get:*:video/x-ms-wmv:DLNA.ORG_PN=WMVSPML_BASE,http-get:*:video/x-ms-asf:DLNA.ORG_PN=MPEG4_P2_ASF_ASP_L5_SO_G726,http-get:*:image/jpeg:DLNA.ORG_PN=JPEG_LRG,http-get:*:audio/mpeg:DLNA.ORG_PN=MP3,http-get:*:video/mpeg:DLNA.ORG_PN=MPEG_PS_PAL_XAC3,http-get:*:audio/x-ms-wma:DLNA.ORG_PN=WMAPRO,http-get:*:video/mpeg:DLNA.ORG_PN=MPEG1,http-get:*:image/jpeg:DLNA.ORG_PN=JPEG_TN,http-get:*:video/x-ms-asf:DLNA.ORG_PN=MPEG4_P2_ASF_ASP_L4_SO_G726,http-get:*:audio/L16;rate=48000;channels=2:DLNA.ORG_PN=LPCM,http-get:*:audio/mpeg:DLNA.ORG_PN=MP3X,http-get:*:video/x-ms-wmv:DLNA.ORG_PN=WMVSPML_MP3,http-get:*:video/x-ms-wmv:*,http-get:*:video/mp4:*&);
service-&SetStateVariable(&SourceProtocolInfo&, &&);
/* RenderingControl */
service = new PLT_Service(
&urn:schemas-upnp-org:service:RenderingControl:1&,
&urn:upnp-org:serviceId:RenderingControl&,
&RenderingControl&,
&urn:schemas-upnp-org:metadata-1-0/RCS/&);
NPT_CHECK_FATAL(service-&SetSCPDXML((const char*) RDR_RenderingControlSCPD));
NPT_CHECK_FATAL(AddService(service));
service-&SetStateVariableRate(&LastChange&, NPT_TimeInterval(0.2f));
service-&SetStateVariable(&Mute&, &0&);
service-&SetStateVariableExtraAttribute(&Mute&, &Channel&, &Master&);
service-&SetStateVariable(&Volume&, &100&);
service-&SetStateVariableExtraAttribute(&Volume&, &Channel&, &Master&);
service-&SetStateVariable(&VolumeDB&, &0&);
service-&SetStateVariableExtraAttribute(&VolumeDB&, &Channel&, &Master&);
service-&SetStateVariable(&PresetNameList&, &FactoryDefaults&);
return NPT_SUCCESS;
按照这些步骤，就能构建自己的dmr。说明一下自己在开发中遇到的一个问题，在构建自己的PLT_MediaRender时：
JNIEXPORT jint JNICALL Java_com_geniusgithub_mediarender_jni_PlatinumJniProxy__1startMediaRender(JNIEnv *env, jclass, jlong _self, jbyteArray _jbyteArrName,jbyteArray _jbyteArrayUUID)
PLT_UPnP* upnp = (PLT_UPnP*)_
char* dmr_name = (char*)env-&GetByteArrayElements(_jbyteArrName, 0);
    char* dmr_uuid = (char*)env-&GetByteArrayElements(_jbyteArrayUUID, 0);
PLT_MediaRenderer* mediaRender = new PLT_MediaRenderer(dmr_name,false,dmr_uuid,36439,false);
PLT_DeviceHostReference device(mediaRender);
myDevice =
upnp-&AddDevice(myDevice);
upnp-&Start();
}&span style=&font-size:18&&GetByteArrayElements有可能发生字符乱码情况，把方法中传入的jbyteArray改为jstring（相应的java层也应改变），代码改为：&/span&&pre name=&code& class=&cpp&&char* dmr_name = (char *) env-&GetStringUTFChars(name, 0);
char* dmr_uuid = (char *) env-&GetStringUTFChars(uuid, 0);&span style=&font-size:18&&乱码问题得到解决。所有要讲解的就到这了，过程中遇到了很多问题，所以写了这篇博文供大家参考，再次谢谢蓝斯博主！&/span&
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