2.4.15 SMPTE 2110 IP Flows

SMPTE 2110 is supported by DeckLink IP cards, such as the DeckLink IP/SDI HD. The DeckLink SDK provides interfaces and methods for configuring and activating the 2110 IP Flows. For an example of configuring the sender and receiver IP flows, please refer to the DeckLinkIPExample sample in the DeckLink SDK.

Note

The same functionality can be achieved with an off-the-shelf NMOS controller connected to a network visible to the DeckLink IP card.

2.4.15.1 IP Sender

An application can read the SDP content for the sender video, audio and ancillary flows. Prior to performing these steps, the application should first enable playback with the IDeckLinkOutput interface to ensure that the SDPs accurately represent the output.

• Obtain an IDeckLinkIPExtensions interface object for the DeckLink IP sender by calling IUnknown::QueryInterface() on the IDeckLink object with IID_IDeckLinkIPExtensions.

• Obtain an IDeckLinkIPFlowIterator by calling IDeckLinkIPExtensions::GetDeckLinkIPFlowIterator() and enumerate the supported IP flows for the device by calling IDeckLinkIPFlowIterator::Next().

For each returned IDeckLinkIPFlow interface object:

• Obtain an IDeckLinkIPFlowAttributes interface object by calling IUnknown::QueryInterface() with IID_IDeckLinkIPFlowAttributes.

• Call IDeckLinkIPFlowAttributes::GetInt() with identifier bmdDeckLinkIPFlowDirection to obtain the IP flow’s direction. An application can filter the sender IP flows by testing for direction bmdDeckLinkIPFlowDirectionOutput.

• Call IDeckLinkIPFlowAttributes::GetInt() with identifier bmdDeckLinkIPFlowType to obtain the IP flow’s type.

To obtain the SDP for a specific IDeckLinkIPFlow interface object:

• Obtain an IDeckLinkIPFlowStatus interface object by calling IUnknown::QueryInterface() with IID_IDeckLinkIPFlowStatus.

• Call IDeckLinkIPFlowStatus::GetString() with identifier bmdDeckLinkIPFlowSDP.

To activate the sender IP flow:

• IDeckLinkIPFlow::Enable()

2.4.15.2 IP Receiver

An application can write the SDP content to the receiver video, audio and ancillary flows. These steps should be performed prior to enabling capture with the IDeckLinkInput interface.

• Obtain an IDeckLinkIPExtensions interface object for the DeckLink IP receiver by calling IUnknown::QueryInterface() on the IDeckLink object with IID_IDeckLinkIPExtensions.

• Obtain an IDeckLinkIPFlowIterator by calling IDeckLinkIPExtensions::GetDeckLinkIPFlowIterator() and enumerate the supported IP flows for the device by calling IDeckLinkIPFlowIterator::Next().

For each returned IDeckLinkIPFlow interface object:

• Obtain an IDeckLinkIPFlowAttributes interface object by calling IUnknown::QueryInterface() with IID_IDeckLinkIPFlowAttributes.

• Call IDeckLinkIPFlowAttributes::GetInt() with identifier bmdDeckLinkIPFlowDirection to obtain the IP flow’s direction. An application can filter the receiver IP flows by testing for direction bmdDeckLinkIPFlowDirectionInput.

• Call IDeckLinkIPFlowAttributes::GetInt() with identifier bmdDeckLinkIPFlowType to obtain the IP flow’s type.

To write the peer SDP for a specific IDeckLinkIPFlow interface object:

• Obtain an IDeckLinkIPFlowSetting interface object by calling IUnknown::QueryInterface() with IID_IDeckLinkIPFlowSetting.

• Call IDeckLinkIPFlowSetting::SetString() with identifier bmdDeckLinkIPFlowPeerSDP.

To activate the receiver IP flow:

• IDeckLinkIPFlow::Enable()