src/kits/media/TimeSourceObject.cpp

   1 /*
   2  * Copyright 2002 Marcus Overhagen. All Rights Reserved.
   3  * This file may be used under the terms of the MIT License.
   4  */
   5
   6
   7 /*!     The object returned by BMediaRoster's
   8         MakeTimeSourceFor(const media_node& forNode);
   9 */
  10
  11
  12 #include "TimeSourceObject.h"
  13
  14 #include <stdio.h>
  15 #include <string.h>
  16
  17 #include <MediaRoster.h>
  18 #include <OS.h>
  19
  20 #include <MediaMisc.h>
  21 #include <debug.h>
  22
  23 #include "TimeSourceObjectManager.h"
  24
  25
  26 TimeSourceObject::TimeSourceObject(const media_node& node)
  27         :
  28         BMediaNode("some timesource object", node.node, node.kind),
  29         BTimeSource(node.node)
  30 {
  31         TRACE("TimeSourceObject::TimeSourceObject enter, id = %"
  32                 B_PRId32 "\n", node.node);
  33
  34         if (fControlPort > 0)
  35                 delete_port(fControlPort);
  36
  37         // We use the control port of the real time source object.
  38         // this way, all messages are send to the real time source,
  39         // and this shadow object won't receive any.
  40         fControlPort = node.port;
  41
  42         ASSERT(fNodeID == node.node);
  43         ASSERT(fKinds == node.kind);
  44
  45         if (node.node == NODE_SYSTEM_TIMESOURCE_ID) {
  46                 strcpy(fName, "System clock");
  47                 fIsRealtime = true;
  48         } else {
  49                 live_node_info liveNodeInfo;
  50                 if (BMediaRoster::Roster()->GetLiveNodeInfo(node, &liveNodeInfo)
  51                                 == B_OK)
  52                         strlcpy(fName, liveNodeInfo.name, B_MEDIA_NAME_LENGTH);
  53                 else {
  54                         snprintf(fName, B_MEDIA_NAME_LENGTH, "timesource %" B_PRId32,
  55                                 node.node);
  56                 }
  57         }
  58
  59         AddNodeKind(NODE_KIND_SHADOW_TIMESOURCE);
  60         AddNodeKind(NODE_KIND_NO_REFCOUNTING);
  61
  62         TRACE("TimeSourceObject::TimeSourceObject leave, node id %" B_PRId32 "\n",
  63                 fNodeID);
  64 }
  65
  66
  67 status_t
  68 TimeSourceObject::TimeSourceOp(const time_source_op_info& op, void* _reserved)
  69 {
  70         // we don't get anything here
  71         return B_OK;
  72 }
  73
  74
  75 BMediaAddOn*
  76 TimeSourceObject::AddOn(int32* _id) const
  77 {
  78         if (_id != NULL)
  79                 *_id = 0;
  80
  81         return NULL;
  82 }
  83
  84
  85 status_t
  86 TimeSourceObject::DeleteHook(BMediaNode* node)
  87 {
  88 //      if (fIsRealtime) {
  89 //              ERROR("TimeSourceObject::DeleteHook: system time source clone delete hook called\n");
  90 //              return B_ERROR;
  91 //      }
  92         PRINT(1, "TimeSourceObject::DeleteHook enter\n");
  93         gTimeSourceObjectManager->ObjectDeleted(this);
  94         status_t status = BTimeSource::DeleteHook(node);
  95         PRINT(1, "TimeSourceObject::DeleteHook leave\n");
  96         return status;
  97 }
  98