IWMSPlaylist Interface
You can use the IWMSPlaylist interface to manage a playlist.
In addition to the methods inherited from IXMLDOMDocument, the IWMSPlaylist interface exposes the following methods.
Method |
Description |
|---|---|
CueStream |
Prepares the next stream in the queue. |
FireEvent |
Sends the specified event to the playlist. |
get_CallerEntry |
Retrieves the current caller entry. |
get_CurrentMediaInformation |
Retrieves an IWMSActiveMedia interface containing information about the active media element in the playlist. |
get_CurrentPlaylistEntry |
Retrieves the active playlist element. |
get_ElapsedSimpleTime |
Retrieves the simple duration of the active playlist element. |
get_IsStreamCued |
Retrieves a Boolean value indicating whether a specific playlist element has been initialized and is ready to stream. |
get_NestedPlaylist |
Retrieves a nested playlist object. |
put_CurrentPlaylistEntry |
Specifies the active playlist element. |
UncueStream |
Specifies that content previously prepared for streaming is uncued. |
Example
The following example illustrates how to retrieve a pointer to an IWMSPlaylist interface
#include <windows.h>
#include <atlbase.h> // Includes CComVariant.
#include "wmsserver.h"
// Declare variables and interfaces.
IWMSServer *pServer;
IWMSPlayers *pPlayers;
IWMSPlayer *pPlayer;
IWMSPlaylist *pPlaylist;
HRESULT hr;
CComVariant varIndex;
long lCount;
// Initialize the COM library and retrieve a pointer
// to an IWMSServer interface.
hr = CoInitialize(NULL);
hr = CoCreateInstance(CLSID_WMSServer,
NULL,
CLSCTX_ALL,
IID_IWMSServer,
(void **)&pServer);
if (FAILED(hr)) goto EXIT;
// Retrieve a pointer to an IWMSPlayers interface
// and retrieve the total count of current connections.
hr = pServer->get_Players(&pPlayers);
if (FAILED(hr)) goto EXIT;
hr = pPlayers->get_Count(&lCount);
if (FAILED(hr)) goto EXIT;
// Retrieve information about each requested playlist.
for (long x = 0; x < lCount; x++)
{
varIndex = x;
hr = pPlayers->get_Item(varIndex, &pPlayer);
if (FAILED(hr)) goto EXIT;
// Retrieve the playlist requested by the client
// if one exists.
hr = pPlayer->get_RequestedPlaylist(&pPlaylist);
if (FAILED(hr)) goto EXIT;
// Release temporary COM objects.
pPlayer->Release();
pPlaylist->Release();
}
EXIT:
// TODO: Release temporary COM objects and uninitialize COM.