Retired Document
Important: Apple recommends that developers explore QTKit and Core Video for new development in this technology area. See QTKit Framework Reference and Core Video Programming Guide for more information.
QTSS Constants
QTSS_AttrDataType
Each QTSS attribute has an associated data type. The QTSS_AttrDataType
enumeration defines
values for attribute data types. Having an attribute’s data type
helps the server and modules handle an attribute value without having
specific knowledge about the attribute.
typedef UInt32 QTSS_AttrDataType; enum { qtssAttrDataTypeUnknown = 0, qtssAttrDataTypeCharArray = 1, qtssAttrDataTypeBool16 = 2, qtssAttrDataTypeSInt16 = 3, qtssAttrDataTypeUInt16 = 4, qtssAttrDataTypeSInt32 = 5, qtssAttrDataTypeUInt32 = 6, qtssAttrDataTypeSInt64 = 7, qtssAttrDataTypeUInt64 = 8, qtssAttrDataTypeQTSS_Object = 9, qtssAttrDataTypeQTSS_StreamRef= 10, qtssAttrDataTypeFloat32 = 11, qtssAttrDataTypeFloat64 = 12, qtssAttrDataTypeVoidPointer = 13, qtssAttrDataTypeTimeVal = 14, qtssAttrDataTypeNumTypes = 15 };
Constants
qtssAttrDataTypeUnknown
qtssAttrDataTypeCharArray
qtssAttrDataTypeBool16
qtssAttrDataTypeSInt16
qtssAttrDataTypeUInt16
qtssAttrDataTypeSInt32
qtssAttrDataTypeUInt32
qtssAttrDataTypeSInt64
qtssAttrDataTypeQTSS_Object
qtssAttrDataTypeQTSS_StreamRef
qtssAttrDataTypeFloat32
qtssAttrDataTypeFloat64
qtssAttrDataTypeVoidPointer
qtssAttrDataTypeTimeVal
qtssAttrDataTypeNumTypes
QTSS_AttrPermission
The QTSS_AttrPermission
data
type is an enumeration that defines values used to indicate whether
an attribute is readable, writable, or preemptive safe. The data
type of the qtssAttrPermissions
attribute
of the QTSS_AttrInfoObject
object
type is of type QTSS_AttrPermission
.
typedef UInt32 QTSS_AttrPermission; enum { qtssAttrModeRead = 1, qtssAttrModeWrite = 2, qtssAttrModePreempSafe= 4 };
Constants
qtssAttrModeRead
qtssAttrModeWrite
qtssAttrModePrempSafe
Discussion
Once set, attribute permissions cannot be changed.
QTSS_AddStreamFlags
The QTSS_AddStreamFlags
enumeration
defines flags that specify stream options when adding RTP streams.
enum { qtssASFlagsAllowDestination = 0x00000001, qtssASFlagsForceInterleave = 0x00000002 }; typedef UInt32 QTSS_AddStreamFlags;
Constants
qtssASFlagsAllowDestination
qtssASFlagsForceInterleave
QTSS_CliSesTeardownReason
The QTSS_CliSesTeardownReason
enumeration
defines values that describe why a session is closing. The QTSS_RTPSessionState
enumeration
is defined as
enum { qtssCliSesTearDownClientRequest = 0, qtssCliSesTearDownUnsupportedMedia = 1, qtssCliSesTearDownServerShutdown = 2, qtssCliSesTearDownServerInternalErr = 3 }; typedef UInt32 QTSS_CliSesTeardownReason;
Constants
qtssCliSesTearDownClientRequest
qtssCliSesTearDownUnsupportedMedia
qtssCliSesTearDownServerShutdown
qtssCliSesTearDownServerInternalErr
QTSS_EventType
A QTSS_EventType
is
an unsigned 32-bit integer whose value uniquely identifies stream
I/O events.
enum { QTSS_ReadableEvent = 1, QTSS_WriteableEvent = 2 }; typedef UInt32 QTSS_EventType;
Constants
QTSS_ReadableEvent
QTSS_WriteableEvent
QTSS_OpenFileFlags
A QTSS_OpenFileFlags
is
an unsigned 32-bit integer whose value describes how a file is to be
opened.
enum { qtssOpenFileNoFlags = 0, qtssOpenFileAsync = 1, qtssOpenFileReadAhead= 2 }; typedef UInt32 QTSS_OpenFileFlags;
Constants
qtssOpenFileNoFlags
qtssOpenFileAsync
qtssOpenReadAhead
QTSS_RTPPayloadType
The QTSS_RTPPayloadType
enumeration
defines values that a module uses to specify the stream’s payload
type when it adds an RTP stream to a client session. The enumeration
is defined as
enum { qtssUnknownPayloadType = 0, qtssVideoPayloadType = 1, qtssAudioPayloadType = 2 }; typedef UInt32 QTSS_RTPPayloadType;
Constants
qtssUnknownPayloadType
qtssVideoPayloadType
qtssAudioPayloadType
QTSS_RTPNetworkMode
The QTSS_RTPNetworkMode
enumeration
defines values that describe the RTP network mode. These values
are set as the value of the qtssRTPStrNetworkMode
and
qtssRTSPReqNetworkMode
attributes
of objects of type qtssRTPStreamObjectType
and qtssRTSPRequestObjectType
,
respectively. The QTSS_RTPNetworkMode
enumeration
is defined as
enum { qtssRTPNetworkModeDefault = 0, qtssRTPNetworkModeMulticast = 1, qtssRTPNetworkModeUnicast= 2 }; typedef UInt32 QTSS_RTPNetworkModes;
Constants
qtssRTPNetworkModeDefault
qtssRTPNetworkModeMulticast
qtssRTPNetworkModeUnicast
QTSS_RTPSessionState
The QTSS_RTPSessionState
enumeration
defines values that identify the state of an RTP session. The QTSS_RTPSessionState
enumeration
is defined as
enum { qtssPausedState = 0, qtssPlayingState = 1 }; typedef UInt32 QTSS_RTPSessionState;
Constants
qtssPausedState
qtssPlayingState
QTSS_RTPTransportType
The QTSS_RTPTransportType
enumeration
defines values for RTP transports. The enumeration is defined as
enum { qtssRTPTransportTypeUDP = 0, qtssRTPTransportTypeReliableUDP= 1, qtssRTPTransportTypeTCP = 2 }; typedef UInt32 QTSS_RTPTransportType;
Constants
qtssRTPTransportTypeUDP
qtssRTPTransportTypeReliableUDP
qtssRTPTransportTypeTCP
QTSS_RTSPSessionType
The QTSS_RTSPSessionType
enumeration
defines values that specify RTSP session types. The enumeration
is defined as
enum { qtssRTSPSession = 0, qtssRTSPHTTPSession = 1, qtssRTSPHTTPInputSession= 2 }; typedef UInt32 QTSS_RTSPSessionType;
Constants
qtssRTSPSession
qtssRTSPHTTPSession
qtssRTSPHTTPInputSession
Discussion
These session types are usually very short lived.
QTSS_ServerState
The QTSS_ServerState
enumeration
defines values that describe the server’s state. Modules can set
the server’s state by setting the value of the qtssSvrState
attribute
in the QTSS_ServerObject
object.
The enumeration is defined as
enum { qtssStartingUpState = 0, qtssRunningState = 1, qtssRefusingConnectionsState= 2, qtssFatalErrorState = 3, qtssShuttingDownState = 4, qtssIdleState = 5 }; typedef UInt32 QTSS_ServerState;
Constants
qtssStartingUpState
qtssRunningState
qtssRefusingConnectionsState
qtssFatalErrorState
qtssShuttingDownState
qtssIdleState
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