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 = %ld\n", node.node);
  32         if (fControlPort > 0)
  33                 delete_port(fControlPort);
  34
  35         // We use the control port of the real time source object.
  36         // this way, all messages are send to the real time source,
  37         // and this shadow object won't receive any.
  38         fControlPort = node.port;
  39
  40         ASSERT(fNodeID == node.node);
  41         ASSERT(fKinds == node.kind);
  42
  43         if (node.node == NODE_SYSTEM_TIMESOURCE_ID) {
  44                 strcpy(fName, "System clock");
  45                 fIsRealtime = true;
  46         } else {
  47                 live_node_info liveNodeInfo;
  48                 if (BMediaRoster::Roster()->GetLiveNodeInfo(node, &liveNodeInfo)
  49                                 == B_OK)
  50                         strlcpy(fName, liveNodeInfo.name, B_MEDIA_NAME_LENGTH);
  51                 else {
  52                         snprintf(fName, B_MEDIA_NAME_LENGTH, "timesource %" B_PRId32,
  53                                 node.node);
  54                 }
  55         }
  56
  57         AddNodeKind(NODE_KIND_SHADOW_TIMESOURCE);
  58         AddNodeKind(NODE_KIND_NO_REFCOUNTING);
  59
  60         TRACE("TimeSourceObject::TimeSourceObject leave, node id %" B_PRId32 "\n",
  61                 fNodeID);
  62 }
  63
  64
  65 status_t
  66 TimeSourceObject::TimeSourceOp(const time_source_op_info& op, void* _reserved)
  67 {
  68         // we don't get anything here
  69         return B_OK;
  70 }
  71
  72
  73 BMediaAddOn*
  74 TimeSourceObject::AddOn(int32* _id) const
  75 {
  76         if (_id != NULL)
  77                 *_id = 0;
  78
  79         return NULL;
  80 }
  81
  82
  83 status_t
  84 TimeSourceObject::DeleteHook(BMediaNode* node)
  85 {
  86 //      if (fIsRealtime) {
  87 //              ERROR("TimeSourceObject::DeleteHook: system time source clone delete hook called\n");
  88 //              return B_ERROR;
  89 //      }
  90         PRINT(1, "TimeSourceObject::DeleteHook enter\n");
  91         gTimeSourceObjectManager->ObjectDeleted(this);
  92         status_t status = BTimeSource::DeleteHook(node);
  93         PRINT(1, "TimeSourceObject::DeleteHook leave\n");
  94         return status;
  95 }
  96