AJA Video Systems

NTV2 Porting Guide

This article suggests how to port application code that builds against an older NTV2 SDK to the most recent SDK.

(Last updated: October, 2024)

Porting from the pre-13.0 “ancient world”

These four steps will cover 80% of the porting effort:

Port “NTV2RoutingEntry” to use “NTV2InputCrosspointID”s
Port “CNTV2Task” to new “AutoCirculateTransfer” API
Replace old AutoCirculate calls with the new ones:
- Replace all calls to InitAutoCirculate with AutoCirculateInitForInput or AutoCirculateInitForOutput
- Replace all calls to StartAutoCirculate with AutoCirculateStart
- Replace all calls to StopAutoCirculate with AutoCirculateStop
- Replace all calls to AbortAutoCirculate with AutoCirculateStop(channel, true)
- Replace all calls to PauseAutoCirculate with AutoCirculatePause or AutoCirculateResume
- Replace all calls to TransferWithAutoCirculate with AutoCirculateTransfer
- Replace all calls to FlushAutoCirculate with AutoCirculateFlush
- Replace all calls to PrerollAutoCirculate with AutoCirculatePreRoll
- Replace all calls to GetAutoCirculate with AutoCirculateGetStatus
- Replace all calls to GetFrameStamp with AutoCirculateGetFrame
Heed all compile-time deprecation warnings (e.g., “‘XXX’ is deprecated, use ‘YYY’ instead”).

If it compiles and links without error, congratulations! — your application is compliant with the latest SDK.

If not, make note of the symbols in the compilation errors. This article will show you how to fix them.

NOTE: You can always try to build with a new SDK, but turn off (comment-out) the #define NTV2_DEPRECATE… macros in ajatypes.h which restores most of the old symbols and APIs — but this is not a permanent solution.

SDK Source Layout Changes

SDK version 13.0 was the first to have the source directories match on all three platforms (Linux, MacOS and Windows). In addition, the SDK was shipped as a .zip file on Windows and Linux for the first time.

Projects that referred to ntv2projects/classes now should refer to ajalibraries/ajantv2/src.
Projects that referred to ntv2projects/includes now should refer to ajalibraries/ajantv2/includes.
Projects that referred to ajastuff/includes now should refer to ajalibraries/ajabase/includes.
Replace any occurrences of #include "ajastuff/ with #include "ajabase/.

Obsolete/Superceded Source Files

The contents of a number of source and header files have become obsolete and/or assumed into other source/header files. The obsolete files may be removed in a future SDK.

Obsolete/superceded implementation files:

ntv2colorcorrection.cpp
ntv2procamp.cpp
ntv2status.cpp
ntv2testpattern.cpp
xena2vidproc.cpp

Obsolete/superceded headers:

ntv2boardscan.h – Replace all occurrences of #include "ntv2boardscan.h" with #include "ntv2devicescanner.h"
ntv2boardfeatures.h – Replace all occurrences of #include "ntv2boardfeatures.h" with #include "ntv2devicefeatures.h"
ntv2choosableboard.h
ntv2colorcorrection.h – Replace all occurrences of #include "ntv2colorcorrection.h" with #include "ntv2card.h"
ntv2procamp.h – Replace all occurrences of #include "ntv2procamp.h" with #include "ntv2card.h"
ntv2status.h – Replace all occurrences of #include "ntv2status.h" with #include "ntv2card.h"
ntv2testpattern.h – Replace all occurrences of #include "ntv2testpattern.h" with #include "ntv2card.h"
ntv2vidproc.h – Replace all occurrences of #include "ntv2vidproc.h" with #include "ntv2card.h"
ntv2vidprocmasks.h
resample.h – Replace all occurrences of #include "resample.h" with #include "ntv2resample.h"
testpatterndata.h
testpatterngendata.h
transcode.h – Replace all occurrences of #include "transcode.h" with #include "ntv2transcode.h"
verticalfilter.h – Replace all occurrences of #include "verticalfilter.h" with #include "ntv2verticalfilter.h"
xena2routing.h – Replace all occurrences of #include "xena2routing.h" with #include "ntv2signalrouter.h"
xena2vidproc.h – Replace all occurrences of #include "xena2vidproc.h" with #include "ntv2card.h"
xenaserialcontrol.h – Replace all occurrences of #include "xenaserialcontrol.h" with #include "ntv2serialcontrol.h"

API Changes

It’s a good practice to start at the Knowledgebase article for the SDK version your application is currently built for, then “walk” forward through the Knowledgebase to each successive SDK, noting the API Changes. This section condenses many of these changes into a series of search/replace steps, for your convenience.

Replace all occurrences of NTV2_TCDEST_… with NTV2_TCINDEX_…
Replace all occurrences of NTV2_TCSOURCE_… with NTV2_TCINDEX_…
Replace all occurrences of NTV2DeviceGetNumAudioStreams with NTV2DeviceGetNumAudioSystems
Replace all uses of NTV2DeviceCanDoLTCOutN(id,N) with NTV2DeviceGetNumLTCOutputs(id) > N
Replace all occurrences of NTV2BoardCanDo… with NTV2DeviceCanDo…
Replace all occurrences of NTV2BoardGetNum… with NTV2DeviceGetNum…
Remove all occurrences of NTV2BoardType.
Remove all uses of NTV2DeviceType, DEVICETYPE_UNKNOWN and/or DEVICETYPE_NTV2.
Any/all CNTV2Card::Open calls should have at most two parameters: the index number and an optional host name (now a std::string).
Remove all calls to the NTV2DeviceTypeString function.
Remove all uses of BOARDTYPE_SCANNABLE.
Remove all uses of BOARDTYPE_NTV2.
Remove all uses of BOARDTYPE_AS_COMPILED.
Replace all occurrences of BOARD_ID_… with DEVICE_ID_….
Remove all uses of NTV2BoardSubType.
Remove all uses of BOARDSUBTYPE_….
Replace all occurrences of NTV2_V2_STANDARD_… with NTV2_STANDARD_….
Replace all occurrences of NTV2V2Standard with NTV2Standard.
Replace all occurrences of IS_PROGRESSIVE_NTV2Standard and IS_PROGRESSIVE_STANDARD with NTV2_IS_PROGRESSIVE_STANDARD.
Replace all occurrences of NTV2_IS_VALID_NTV2Standard and NTV2_IS_VALID_NTV2V2Standard with NTV2_IS_VALID_STANDARD.
Anywhere an NTV2FrameDimensions value was used, replace all occurrences of .cx or .cy with .Width() and .Height() respectively.
Replace calls to IsKonaIPDevice with IsIPDevice.
Replace all occurrences of AJATestPatternGen with NTV2TestPatternGen.
Replace calls to getTestPatternList with calls to getTestPatternNames.
Replace all uses of AJATestPattern… data types with NTV2TestPattern… ones.
Replace all uses of AJATestPattEx… enums with NTV2_TestPatt_… ones.
Un-numbered HDMIIn output crosspoint IDs are now numbered, so replace NTV2_XptHDMIIn… with e.g. NTV2_XptHDMIIn1.

API Changes — NTV2FormatDescriptor and NTV2VANCMode:

Any source file that contains NTV2FormatDescriptor must #include "ntv2formatdescriptor.h" (or include another header file that includes it).
Any use of two booleans for “vancEnabled” and “wideVanc” (or “tallerVanc”) should simply use a single NTV2VANCMode.
Replace calls to GetFormatDescriptor with the equivalent NTV2FormatDescriptor constructor.
Replace calls to GetVideoWriteSize (videoFormat, pixelFormat, isVancEnabled, isWideVanc) with GetVideoWriteSize(videoFormat, pixelFormat, vancMode)
Replace calls to SetEnableVANCData with SetVANCMode.
Replace calls to GetEnableVANCData (&isVancEnabled, &isTallVanc, channel) with GetVANCMode (vancMode, channel)

API Changes — AJA Caption Library

Replace all calls to IsCaptionChannel with call to IsLine21CaptionChannel
Replace all calls to IsTextChannel with call to IsLine21TextChannel
In SDK 14.2, caption library logging changed substantially to use the vastly more convenient AJA Logger utility.
Most of the kCaptionLog_ constants were removed.
GetDefaultCaptionLogOutputStream and SetDefaultCaptionLogOutputStream were removed.
The Log, LogIf and SetLogStream methods are deprecated. Don’t use them.

API Changes — CXena2VidProc (Mixer)

Replace all uses of CXena2VidProc class with CNTV2Card.
Replace all calls to GetXena2VidProcMode, GetXena2VidProc2Mode, GetXena2VidProc3Mode, etc. with GetMixerMode, specifying the Mixer index number 0, 1, 2, etc. as appropriate.
Replace all calls to SetXena2VidProcMode, SetXena2VidProc2Mode, SetXena2VidProc3Mode, etc. with SetMixerMode, specifying the Mixer index number 0, 1, 2, etc. as appropriate.
Replace all calls to GetMixCoefficient, GetMix2Coefficient, GetMix3Coefficient, etc. with GetMixerCoefficient, specifying the Mixer index number 0, 1, 2, etc. as appropriate.
Replace all calls to SetMixCoefficient, SetMix2Coefficient, SetMix3Coefficient, etc. with SetMixerCoefficient, specifying the Mixer index number 0, 1, 2, etc. as appropriate.
Replace all calls to GetXena2VidProcInputControl, GetXena2VidProc2InputControl, GetXena2VidProc3InputControl, etc. with GetMixerFGInputControl for NTV2_CHANNEL1 or GetMixerBGInputControl for NTV2_CHANNEL2, specifying the Mixer index number 0, 1, 2, etc. as appropriate.
Replace all calls to SetXena2VidProcInputControl, SetXena2VidProc2InputControl, SetXena2VidProc3InputControl, etc. with SetMixerFGInputControl for NTV2_CHANNEL1 or SetMixerBGInputControl for NTV2_CHANNEL2, specifying the Mixer index number 0, 1, 2, etc. as appropriate.
Remove all calls to GetSplitMode, SetSplitMode, and SetSplitParameters – this feature is no longer supported by AJA devices.

API Changes — Use non-const-references instead of pointers for CNTV2Card “getter” methods:

When a “getter” method has a non-constant-reference return argument, we recommend using that instead of pointers — e.g., replace GetXXXX(&variable) with GetXXXX(variable).

SDK 12.4.2 changes (from 12.3)

The SDK now produces compile-time warnings when deprecated APIs are used (on most compilers).
CNTV2Task-based timecode capture/playout (see AutoCircTimeCodeTask) is no longer supported in 12.4 (or later) drivers. The CNTV2Task and AUTOCIRCULATE_TASK_STRUCT API was hacked into the SDK many years ago to allow AutoCirculate clients to frame-accurately set/get timecode to/from SDI spigots other than the channel being circulated. This added a great deal of complexity to the driver and was impossible to scale in order to fix the absence of embedded Field2 VITC in interlaced video. Given our limited resources, we had to simplify the kernel driver and didn’t have sufficient time to back-port the old task-based behavior. We apologize for the inconvenience. If you must frame-accurately set/get timecode to/from SDI spigots that don’t correspond to the AutoCirculate channel, you MUST use the new AUTOCIRCULATE_TRANSFER class and AutoCirculateTransfer function. A porting guide is here.
SDI input signal monitoring (e.g., VPID valid detect, RX lock tally, TRS error detect, CRC error tally, etc.) on select hardware (e.g. Corvid44) is now implemented on all platforms.
New device support:
- Corvid HEVC — On Windows, support is built into the driver and SDK. On Linux, use the HEVC-specific SDK.
- Kona IP — AJA’s first foray into SMPTE 2022 (video-over-IP)
API Changes:
- CNTV2ColorCorrection, CNTV2TestPattern, CNTV2VidProc, CXena2VidProc, and CNTV2ProcAmp have all been deprecated, and their residual functions and member data has been folded into CNTV2Card. Henceforth, CNTV2Card is now the only class to be used to talk to an AJA device.
- New NTV2DeviceCanDoPCMDetection function and “per-audio-channel-pair” PCM detection member functions of CNTV2Card now operate with some newer AJA devices (Corvid44, Kona4 … with newer firmware installed).
- APIs are now ready to support 128 audio channels (i.e., up to 64 audio channel pairs) per SDI spigot (awaiting future firmware support).
- CNTV2AncPacket and CNTV2AncPackets classes were finally removed from the ‘ajacc’ library. The NTV2CCPlayer demo now uses the ‘ajaanc’ library.

SDK 12.5.0 changes (from 12.4.2)

HDR support
SMPTE 2022-7 support on KONA IP
VPID — major driver improvements to transmit correct VPID, especially for SMPTE 425 (Tsi).
64-bit-only on macOS — The libraries supplied with the SDK now only contain the x86_64 architecture (not both i386 and x86_64, as before). If a 32-bit executable is required, ‘classes’ (and possibly ‘ajastuff’, if needed) must be recompiled for i386.
On macOS, the supplied ‘classes’ and ‘ajastuff’ libraries don’t support the new C++11 LLVM standard library. If you need to link with C++11 support, you must rebuild the libraries.
API Changes:
- API changes are now tracked using separate per-release macros. NTV2_DEPRECATE_12_5 is defined in ajatypes.h for this release (and can be undefined there, if necessary, to avoid having to make any code changes to accommodate API changes).
- NTV2_DEPRECATE is now defined by default (in ajatypes.h). The old, deprecated APIs will be disappearing!
- Enhanced:
  - NTV2_POINTER: New CopyFrom, SwapWith, and GetRingChangedByteRange methods. IsContentEqual has been enhanced with new byte offset & count parameters.
  - AUTOCIRCULATE_STATUS: New inquiry methods: GetAudioSystem, IsStopped, WithAudio, IsInput, IsOutput and GetChannel.
  - CNTV2Card::AutoCirculateGetFrameStamp — now returns full complement of captured timecodes.
  - CNTV2Card::WaitForOutputVerticalInterrupt and CNTV2Card::WaitForInputVerticalInterrupt — now have an optional repeatCount parameter (defaults to 1).
  - CNTV2Card::BankSelectReadRegisters — has been replaced by BankSelectReadRegister.
  - CNTV2Card::BankSelectWriteRegisters — has been replaced by BankSelectWriteRegister.
  - NTV2RegInfo — added several new convenience methods.
  - NTV2FormatDescriptor — added several new constructors, plus GetFirstChangedRow, GetChangedLines, and other convenience methods.
  - NTV2SMPTELineNumber — added several new convenience methods.
  - HevcCommand & HevcDeviceCommand — several new “change encode parameter” options, “change picture type”, etc.
- Deprecated:
  - NTV2V2Standard (rolled into existing NTV2Standard)
  - NTV2RoutingEntry — This will likely require simple code changes. A handy porting guide is here.
  - CNTV2Card::DownloadLUTToHW
  - NTV2BankRegPair — no longer needed.
- New:
  - NTV2VANCMode — enum to permit deprecation of APIs using the “tall” and “taller” booleans.
  - NTV2DoubleArray — for greater ease in getting/setting LUTs.
  - NTV2RegisterExpert — one-stop-shopping for register info.
  - CNTV2Card::LoadLUTTables and CNTV2Card::GetLUTTables methods — which accept NTV2DoubleArrays.
  - CNTV2Card::GetAESOutputSource and CNTV2Card::SetAESOutputSource methods — missing from the API until now.
  - CNTV2Card::IsAudioChannelPairPresent and CNTV2Card::GetDetectedAudioChannelPairs methods — missing from the API until now.
  - CNTV2Card::GetDieTemperature — now you can read the FPGA die temperature in any NTV2DieTempScale you like!
  - AJAAncillaryList::AddVANCData — for “tall” and “taller” VANC geometries in 10-bit YCbCr frame buffers.
  - NTV2RasterLineOffsets — an ordered sequence of zero-based line offsets into a frame buffer.
  - NTV2InputSourceSet — a set of distinct NTV2InputSource values.
- Driver Changes:
  - New FRAME_STAMP message — to see all timecodes being carried in any AutoCirculate frame.
- New Device Support:
  - Corvid HB-R — HDBaseT ingest board with VISCA/RS-232 control, 10W of power, captures up to 4K/60p video and 8-channels of audio over Cat5e/6

SDK 13.0 changes (from 12.5.x)

JPEG-2000 (J2K) support on KONA IP
NEW SDK LAYOUT:
- ajaapps — Application sources
  - crossplatform — Sources for platform-independent applications
    - demoapps — Sources for the demonstration apps
- ajalibraries — Sources for all SDK libraries
  - ajaanc — The AJA Ancillary Data library
  - ajabase — The AJA “Base” library (formerly “ajastuff”)
  - ajantv2 — The NTV2 library (formerly “ntv2projects” and “classes”)
  - gpustuff — OpenGL and other GPU support (Linux and Windows only)
API Changes:
- NTV2FormatDescriptor — Added support for some planar pixel formats.
- CNTV2Card class
  - New SetAudio20BitMode and GetAudio20BitMode functions — enables or disables 20-bit mode for a given audio engine’s embedder/de-embedder (disabled is the normal 24-bit mode).
  - New GetAudioOutputEmbedderState and SetAudioOutputEmbedderState functions — to enable or disable an SDI output’s audio embedder.
  - New optional “inClearDropCount” parameter in AutoCirculateResume and AutoCirculateFlush functions — to optionally clear the “dropped frames” tally for an active AutoCirculate channel.
  - New GetConnectedInput function — to discover the NTV2InputCrosspoint a given NTV2OutputCrosspoint is feeding.
  - New EnableHDMIHDRDolbyVision and GetHDMIHDRDolbyVisionEnabled functions.
  - GetFBSizeAndCountFromHW is now private.
  - New “Device Features” API — NOTE: work-in-progress — We would eventually like to eliminate the dichotomy between the what the SDK claims a device can do (determined at compile-time) and what the device can actually do (determined by its firmware at run-time).
- New j2kDecoderConfig and j2kDecoderConfig classes
- CNTV2ConfigTs2022, CNTV2MailBox and CNTV2MBController classes — many changes
- TSGenerator, PESGen, PATGen, PMTGen, and ADPGen classes replaced the CNTV2MBController class
- Device Features API:
  - NTV2DeviceCanDoJ2K function
  - NTV2DeviceCanDo2110 function
- Driver Changes:
  - All Platforms
    - Virtual register space has been expanded to store up to 1,024 32-bit values. Clients can use WriteRegister/ReadRegister to store/retrieve arbitrary 4-byte values in “registers” starting at kVRegFirstOEM up to kVRegLast.
    - Bug fixes for timecode, VITC and Anc ingest/playout.
  - Linux
    - Improved DMA transfer performance from multithreaded applications using AJA devices having NWL DMA engines.
    - The ancient “xena” name for the kernel module (.ko) has finally been replaced with “ajantv2” to match the naming used on macOS and Windows.

SDK 13.1 changes (from 13.0)

KONA-IP: SMPTE 2022 IGMP v3 Implementation — When the source IP address is included in the Rx match selection, source specific IGMP subscriptions are made.
API Changes:
- New CNTV2Card functions GetRunningFirmwareDate, GetRunningFirmwareTime and GetRunningFirmwareRevision functions — to detect if the installed device firmware is the firmware that‘s currently running.

SDK 14.0 changes (from 13.1)

Introducing Io4K-Plus — Thunderbolt III, 4-lane gen3 PCIe, 6G/12G SDI input/output, XLR microphone input, HDMI 2.0
Introducing IoIP — Thunderbolt III, 4-lane gen3 PCIe, HDMI 2.0
Audio Mixer for Kona 4, Io4K and Io4K+ (Quad firmware only)
- Note that on Kona4 and Io4K, quadrant-mode HMDI monitoring for 4K/UHD was removed to fit the new audio mixer functionality into the FPGA.
API Changes:
- NTV2FormatDescriptor:
  - More planar support: new PlaneToString and ByteOffsetToPlane functions
  - Other changes:
    - New ByteOffsetToRasterLine, RasterLineToByteOffset and IsAtLineStart functions.
    - New GetLineOffsetFromSMPTELine function.
    - New IsSDFormat function.
- CNTV2Card:
  - New DeviceCanDoAudioMixer and DeviceHasMicInput functions, to detect if the audio mixer firmware and/or microphone input hardware is present or not.
  - New GetAudioMixer… and SetAudioMixer… functions — to support the new audio mixer firmware in the Io4K and Io4K-Plus.
  - New GetSDIInput6GPresent and GetSDIInput12GPresent functions — to support the new 6G/12G SDI connectors on the Io4K-Plus.
  - New GetSDIOut6GEnable/SetSDIOut6GEnable and GetSDIOut12GEnable/SetSDIOut12GEnable` functions — to support the new 6G/12G SDI connectors on the Io4K-Plus.
  - New GetAnalogAudioIOConfiguration/SetAnalogAudioIOConfiguration functions — to support the new analog audio connector on the Io4K-Plus.
  - New CanConnect function now implemented - validates internal xpt routes.
  - New GetEnableHDMIOutUserOverride, EnableHDMIOutUserOverride, GetEnableHDMIOutCenterCrop and EnableHDMIOutCenterCrop functions (only for devices that support HDMI 2.0).
  - New VirtualDataWrite and VirtualDataRead functions writing/reading HDMI metadata.
  - New GetAncExtractorRunState and GetAncInserterRunState functions (for devices with custom Anc inserter/extractor firmware).
- AUTOCIRCULATE_TRANSFER:
  - New acHDR10PlusDynamicMetaData member for optionally transmitting HDR10+ dynamic metadata per-frame.
- Device Features API
  - New NTV2DeviceCanDo12GOut function
  - New NTV2DeviceHasSPIv5 function
  - New NTV2DeviceCanDoAudioMixer function
  - New NTV2DeviceHasLEDAudioMeters, NTV2DeviceHasHeadphoneJack, NTV2DeviceHasAudioMonitorRCAJacks, and NTV2DeviceHasBiDirectionalAnalogAudio functions
  - New NTV2DeviceGetAudioMixerSystem, NTV2DeviceCanDoAudioOut and NTV2DeviceCanDoAudioIn functions
- Miscellaneous
  - New NTV2StandardSet collection and NTV2DeviceGetSupportedStandards function.
  - New FindFirstMatchingRegisterNumber and GetNormalizedFrameGeometry functions.
  - New GetFirstMatchingVideoFormat and GetNormalizedFrameGeometry functions.
  - New NTV2IpErrorEnumToString function.
- CNTV2SignalRouter
  - New ResetFromRegisters, GetWidgetIDs, GetAllWidgetInputs and GetAllRoutingRegInfo functions.
- CNTV2Config2022, CNTV2Config2110 and CNTV2MBController classes & cousins
  - extensive changes — too many to list
- Enums
  - NTV2Stream has new NTV2_METADATA_STREAM and NTV2_UNUSED_STREAM values (NTV2_AUDIO2_STREAM was dropped).
  - NTV2AudioSource has a new NTV2_AUDIO_MIC value.
  - NTV2InputAudioSelect has a new NTV2_MicInSelect value.
  - NTV2SDITransportType has new NTV2_SDITransport_6G and NTV2_SDITransport_12G values.
  - NTV24kTransportType has a new NTV2_4kTransport_12g_6g_1wire value.
  - New NTV2WidgetID values: NTV2_Wgt12GSDIIn1…4 and NTV2_Wgt12GSDIOut1…4, NTV2_WgtHDMIIn1v4 and NTV2_WgtHDMIOut1v4.
  - New NTV2AudioMixerChannel enum.
  - New NTV2AnalogAudioIO enum to describe Io4K+’s analog audio connector configuration (8-in, 8-out, 4-in/4-out, or 4-out/4-in).
  - The VPIDStandard values have changed.
  - New NTV2IpError enum to describe IP errors.
  - Changed several NTV2FrameBufferFormats that were unused in our supported devices to support new 3-plane planar formats in the Corvid44:
    - NTV2_FBF_8BIT_QREZ is now NTV2_FBF_8BIT_YCBCR_420PL3;
    - NTV2_FBF_UNUSED_23 is now NTV2_FBF_8BIT_YCBCR_422PL3;
    - NTV2_FBF_UNUSED_26 is now NTV2_FBF_10BIT_YCBCR_420PL3_LE;
    - NTV2_FBF_UNUSED_27 is now NTV2_FBF_10BIT_YCBCR_422PL3_LE;
    - Renamed the 2-plane planar formats — supported only by the Corvid HEVC — to clarify they have only two planes:
      - NTV2_FBF_10BIT_YCBCR_420PL is now NTV2_FBF_10BIT_YCBCR_420PL2;
      - NTV2_FBF_10BIT_YCBCR_422PL is now NTV2_FBF_10BIT_YCBCR_422PL2;
      - NTV2_FBF_8BIT_YCBCR_420PL is now NTV2_FBF_8BIT_YCBCR_420PL2;
      - NTV2_FBF_8BIT_YCBCR_422PL is now NTV2_FBF_8BIT_YCBCR_422PL2.
Driver Changes:
- All Platforms: New NTV2VirtualData message.
- macOS: HDMI input detection moved from the ‘AJAAgent’ service daemon into the driver. This comports with Linux and Windows.
Kona IP Changes
- Support is added for SMPTE 2110. Beta – video Tx & audio Tx only (no Anc, no Rx)
  - A new API class CNTV2Config2110 is used to set up the card. The 2110 firmware is designed to operate locked to PTP timing.
  - On an experimental basis, support is added for use of SDPs with 2110. For Tx, SDPs are served using HTTP protocol for active channels. For Rx, SDPs can be obtained using HTTP directly by the KonaIP card or from a file given to the Config class. Thes SDPs are parsed and used to configure Rx channels for video and audio.
  - This is an emerging technology and the current implementation should be regarded as experimental.
- All KonaIP firmware versions now support IGMP v3. For Rx when a ‘source IP match’ is enabled, a V3 IGMP source subscription will be made for the source IP address.
- The 2022 firmware package supports both 2022-6 and 2022-7 operation.
  - 2022-7 is now configured globally for all channels. Also, the network path differential is global rather than per channel as it was previously
  - For 2022-6 operation, inputs and outputs can be assigned to either link-A (top SFP) or link-B (bottom SFP). Previously the assignments were fixed and different firmware was required to use link-B for 2022-6. In this release all channels can be routed to either SFP link.
- The ntv2konaipjsonsetup program has been enhanced for both 2022 and 2110 use. For 2022 J2K, it should be used in conjunction with the ntv2konaipj2ksetup program. A -k option has been added which lists the fields supported for each protocol. The changes in 2022-7 and 2022-6 configuration described above are reflected in these programs too.
- For both 2022 and 2110 Config classes, when the IP addresses are configured, the Config class validates that the installed firmware is a match for the SDK. If there is a mismatch then the IP addresses are not configured and the call returns false. This ensures that there is a fimware/software match and effectively disables the IP I/O for the board on a mismatch.
- Functions have been added to 2022 and 2110 Config classes to gather information on SFPs.

SDK 14.2 & 14.3 changes (from 14.0)

New Device Support:
- KONA 1 — A modern replacement for the Corvid 1
- KONA HDMI — 4-input HDMI capture card
API Changes:
- CNTV2Card:
  - New DMAReadAnc/DMAWriteAnc methods;
  - GetHDMIInputVideoFormat, GetHDMIInputStatusRegister and GetHDMIInputColor now accept an optional NTV2Channel number.
- NTV2_POINTER:
  - New methods to Set/Get to/from std::vectors of uint64_t, uint32_t, uint16_t and uint8_t.
  - New Dump method
- New CNTV2SupportLogger class — Generates NTV2 support log files for debug purposes
- AJAAncillaryList and AJAAncillaryData: — many changes to support SMPTE 2110 Ancillary data streams.
- Tsi (2-sample interleave) is now the default scheme for 4K/UHD over 3G SDI on boards newer than Kona3G/Corvid24 (Kona4, Io4K, Corvid44, etc.).
- Removed using namespace statement in ntv2rp188.h
Demo Apps
- NTV2Capture — Tweaked to work with the new Kona HDMI.
- NTV2Capture4K — Now can capture Tsi instead of just quads/squares.
- NTV2CCPlayer — Fixed schmutz in top lines of video when using --vanc command-line option.
- NTV2KonaIPJSONSetup — Many changes to support new IP capabilities.
- NTV2Player4K — Now can play 4K using Tsi instead of only quads/squares. Now works with KonaIP.
- NTV2QtCapture & NTV2QtMultiInput — Improvements and bug fixes in AJAPreviewWidget and NTV2FrameGrabber classes.

SDK 15.0 changes (from 14.3)

The ‘ajabase’ and ‘ajaanc’ class libraries have been merged into the ‘ajantv2’ library.
- On Windows, this may require linking with additional Windows libraries.
- On Linux, this may require linking with additional libraries (e.g. -lrt).
KONA 5 — our first Gen3×8 PCIe ingest/playout board with 4GB SDRAM and 4×12Gbps SDI connectors
Two-Sample-Interleave (Tsi) 4K video formats for the 12g KONA 5 — which greatly simplifies 4K routing:
- Just call SetVideoFormat with one of the new Tsi video formats (e.g. NTV2_FORMAT_4096x2160p_2400).
- “Square Division” mode is now the exception. Call SetVideoFormat with one of the “4x” video formats (e.g. NTV2_FORMAT_4x2048x1080p_2400).
Most CNTV2Card functions that return a value using a pointer parameter have been deprecated. We’ve standardized on the use of non-constant reference parameters instead.

SDK 15.2 changes (from 15.1)

New Device Support:
- Corvid44-12G — OEM version of KONA 5 — 4×12g connectors (but no HDMI out or breakout cable/box)
UHD2 Support — UHD2 (4×UHD) ingest/playout support for KONA 12G and Corvid44-12G
S-2110 Anc Support: — Seamless ancillary data stream support for KONA IP and IoIP.
API Changes:
- The NTV2DeviceID of the KONA 5 (12G firmware) has changed from DEVICE_ID_KONA5_12G to DEVICE_ID_KONA5_4X12G.
- The NTV2DeviceID of the Corvid44-12G, currently DEVICE_ID_CORVID44_12G, is subject to change.
- Demos:/
  - NTV2Capture4K now emits ancillary data by default.
  - New NTV2Capture8K and NTV2Player8K demos.
- ‘ajaanc’ Library:
  - Supporting S2110 Ancillary Data streams for KONA IP and IoIP has necessitated some API changes to this library.
  - AJAAncillaryList:
    - SetFromIPAncData and SetFromSDIAncData have been deprecated in favor of the new, generic SetFromDeviceAncBuffers function.
    - GetSDITransmitData has been deprecated in favor of the SDI-default GetTransmitData function. If RTP is needed/desired, then the GetIPTransmitData function can be used instead.
    - The “Analog” (“raw”) ancillary data type map is now global (instead of per-AJAAncillaryList instance).
    - New thread-safe global setting API (IsIncludingZeroLengthPackets, SetIncludeZeroLengthPackets, GetExcludedZeroLengthPacketCount, ResetExcludedZeroLengthPacketCount) that controls whether or not AddVANCData/AddReceivedAncillaryData will add zero-length packets.
  - AJAAncillaryDataLocation:
    - Use of AJAAncillaryDataSpace has been deprecated in favor of the new, special Horizontal Offset and Line Number constants (e.g. AJAAncDataHorizOffset_AnyHanc).
    - Set function (with 6 parameters, one of which is ignored now) has been deprecated in favor of using the existing SetDataLink, SetDataStream, SetDataChannel, etc. functions.
  - AJAAncillaryData:
    - Multi-parameter versions of SetDataLocation, GetDataLocation (and friends) have been deprecated in favor of independently manipulating/interrogating AJAAncillaryDataLocation.
    - Added 32-bit frame identifier and AJAAncillaryBufferFormat members to AJAAncillaryData instances.
- CNTV2Card:
  - SetRP188Source has been renamed SetRP188SourceFilter to better reflect what it actually does.
  - Added new GetRP188BypassSource/SetRP188BypassSource functions.
  - Added new AUTOCIRCULATE_WITH_HDMIAUX option to enable ingest/playout of HDMI InfoFrame auxiliary data (e.g. HDR data).
  - Added new GetQuadQuadSquaresEnable/SetQuadQuadSquaresEnable functions to support UHD2.
  - DMAReadAnc/DMAWriteAnc now have an optional NTV2Channel parameter for S2110 IP devices to specify which Anc FrameStore and extractor/inserter is being used.
  - Added new AncInsertSetIPParams function for configuring the S2110 ancillary data inserter.
  - Added new GetMixerFGMatteEnabled/SetMixerFGMatteEnabled, GetMixerBGMatteEnabled/SetMixerBGMatteEnabled, and GetMixerMatteColor/SetMixerMatteColor functions.
  - Added new GetAudioOutputAESSyncModeBit/SetAudioOutputAESSyncModeBit functions for falsifying the AES “Sync Mode” in outgoing embedded SDI audio.
  - Added new DMABufferLock/DMABufferUnlockAll functions for long-term locking of host buffer memory in kernel space.
  - Added new SetVPIDTransferCharacteristics, SetVPIDColorimetry and SetVPIDVPIDLuminance functions.
- Device Features:
  - Added new NTV2DeviceCanDoWarmBootFPGA and NTV2DeviceCanDo8KVideo functions.
- Enum Types:
  - Added new NTV2VPIDTransferCharacteristics, NTV2VPIDColorimetry and NTV2VPIDLuminance enum types.
- NTV2FormatDescriptor:
  - Added new GetWriteableRowAddress function.
- NTV2_POINTER:
  - New Dump function (to std::string).
- AUTOCIRCULATE_TRANSFER:
  - SetAllOutputTimeCodes can now be told whether to set VITC2 or not.
- Utilities:
  - Added new NTV2DeviceGetSupportedGeometries, HasVANCGeometries, GetRelatedGeometries, GetVANCModeForGeometry, GetStandardFromGeometry functions.
  - Added new Is8KFormat function.
  - Added new NTV2MixerKeyerModeToString, NTV2MixerInputControlToString, and NTV2VideoLimitingToString functions.
  - GetFirstMatchingVideoFormat now takes into account psf.
- NTV2TestPatternGen:
  - Added new 12-bit RGB test patterns (Zone Plate, Linear Ramp, HLG Narrow, PQ Narrow, and PQ Wide).
- Transcode: — New functions:
  - ConvertLine_8bitABGR_to_48bitRGB
  - ConvertLine_8bitABGR_to_10bitABGR
  - ConvertLine_2vuy_to_yuy2
  - ConvertLine_8bitABGR_to_10bitRGBDPXLE
  - ConvertLine_8bitABGR_to_24bitRGB
  - ConvertLine_8bitABGR_to_24bitBGR

SDK 15.2.2 changes (from 15.2)

API Changes:
- CNTV2Card::SetFrameBufferFormat has three new, optional parameters for setting the HDR characteristics of the FrameStore/Channel, which allows the driver to properly decorate the output VPID for any output fed by the FrameStore. They default to NTV2_VPID_TC_SDR_TV, NTV2_VPID_Color_Rec709 and NTV2_VPID_Luminance_YCbCr.
- CNTV2Card::GetNTV2VideoFormat was changed to correctly detect 1080i/psf 23.98/24.00 fps dual-link 3G RGB. Unfortunately, this breaks 1080i@4798/4800 detection, since they’re electrically identical. This will be corrected in a future SDK by consulting the input VPID.

SDK 15.5 changes (from 15.2.2)

New Firmware Bitfiles:
- Corvid44-12G 8KMK Bitfile — DEVICE_ID_CORVID44_8KMK replaces NTV2DeviceID DEVICE_ID_CORVID44_12G — same capabilities:
  - Up to 8K YUV in/out
  - Up to 4K using CSCs & mixer/keyers
- Corvid44-12G 8K Bitfile — DEVICE_ID_CORVID44_8K:
  - Up to 8K YUV or RGB in/out
  - No CSCs, no Mixer/Keyers
- KONA 5 8KMK Bitfile — DEVICE_ID_KONA5_8KMK:
  - Up to 8K YUV in/out
  - Up to 4K using CSCs & mixer/keyers
  - No audio mixer
- KONA 5 8K Bitfile — DEVICE_ID_KONA5_8K replaces NTV2DeviceID DEVICE_ID_KONA5_4X12G — same capabilities:
  - Up to 8K YUV or RGB in/out
  - No CSCs, no Mixer/Keyers, no audio mixer
API Changes:
- AJAAncillaryList:
  - Added new overloaded function AddAncillaryData for appending packets from another AJAAncillaryList.
  - Added new GetIPTransmitDataLength function.
- AJAAncillaryData:
  - Added new IS_KNOWN_AJAAncillaryDataType macro.
  - Numerous changes to the AJARTPAncPayloadHeader class.
- CNTV2Card:
  - New NTV2_POINTER-based version of the DMABufferLock function.
  - New DMAClearAncRegion, GetAncRegionOffsetAndSize and GetAncRegionOffsetFromBottom functions.
  - Added missing GetRawAudioTimer function.
  - All-new, corrected Audio Mixer API, that also introduces new functions to get/set muting for the mixer’s output audio channels. The original input-specific APIs introduced in SDK 15.2 will be deprecated.
  - AutoCirculateInitForInput, AutoCirculateInitForOutput and FindUnallocatedFrames now use UWords instead of UBytes for frame numbers, in order to handle frame numbers over 255.
  - New GetConnectedInputs routing function.
  - GetLTCInputPresent can now answer for a second LTC input port, for devices that have them.
  - AncExtractGetDefaultDIDs can now optionally return DIDs for SD audio packets instead of just HD ones.
  - It was necessary to remove the LocalLoadBarsTestPattern function.
- Device Features:
  - Added new NTV2DeviceCanDoHFRRGB function to test if the device supports RGB 1080p at more than 50Hz.
- Data Types:
  - DEVICE_ID_CORVID44_12G has been deprecated and replaced by DEVICE_ID_CORVID44_8KMK.
  - Added new DEVICE_ID_CORVID44_8K device ID for the new bitfile that supports up to 8K YUV or RGB in/out with no CSCs or Mixer/Keyers.
  - DEVICE_ID_KONA5_4X12G has been deprecated and replaced by DEVICE_ID_KONA5_8K.
  - Added new DEVICE_ID_KONA5_8KMK device ID for the new KONA 5 bitfile.
  - Added new NTV2_FBF_12BIT_RGB_PACKED frame buffer format, an AJA-specific 12-bit uncompressed RGB format.
  - Added new NTV2_IS_UHD2_FULL_VIDEO_FORMAT macro.
  - Enumerated types and constants that were tied to AJA’s “retail” software — not the OEM SDK — have been consolidated and slated for deprecation under the R2_DEPRECATE macro.
  - Added new NTV2AncillaryDataRegion enum.
  - Added new UByteSequence data type, a std::vector of UByte values.
  - Added new HDRDriverValues struct.
  - Defined new RP188SourceFilterSelect to eventually replace the poorly-named RP188SourceSelect enum type.
- NTV2FormatDescriptor:
  - SMPTE line numbering fixes for 4K & 8K standards.
  - Added support for new NTV2_FBF_12BIT_RGB_PACKED pixel format.
- AUTOCIRCULATE_STATUS:
  - Added handy new GetMode function.
- Utilities:
  - Added new NTV2BreakoutTypeToString and NTV2AncDataRgnToStr functions.
  - GetNTV2HDMIInputSourceForIndex is now slated for eventual deprecation.
- NTV2TestPatternGen:
  - Added new DrawTestPattern function that conveniently accepts an NTV2FormatDescriptor.
  - Added handy new canDrawTestPattern function.
  - Added new NTV2_IS_VALID_PATTERN macro.
- Transcode:
  - Added new Convert16BitARGBTo12BitRGBPacked function.
- CNTV2VPID:
  - Added new “to string” conversion functions: VersionString, StandardString, PictureRateString, SamplingString, ChannelString, DynamicRangeString, BitDepthString, LinkString, AudioString.
Demo Changes:/
- Removed redundant switching of bidirectional SDI connector to receive mode in NTV2Capture::SetupVideo.
- NTV2CCPlayer can optionally force multiple RTP packets per-frame on IP devices.
- NTV2Player4K has been cleaned up and now shows how to play 4K through 6G and 12G SDI spigots on Io4K+, KONA 5 and Corvid44-12g.
- Fixed several compile-time warnings.
Driver Changes:
- HDMI input detection improvements.
- Added HDR info to SDI output VPID.
- Added ability to configure maximum PCIe read request size to improve 8K transfer speed for KONA 5, Corvid44-12G.
- Linux: Fixed a serious long-standing race condition in the Linux driver that could cause multiple processes waiting on the same interrupt (e.g. eOutput1) to time-out.
- Windows: Fixed a serious issue in the audio driver that could cause blue screens when system audio output is routed through the AJA device.

SDK 16.0 changes (from 15.5)

New Device Support:

T-Tap Pro — A very much improved 4K-capable version of the T-Tap
API Changes:
- CNTV2Card:
  - To improve 8K/UHD2 DMA performance: There’s a new “map” option on the DMABufferLock functions to have the driver also lock down the segment map in kernel memory; New DMABufferUnlock function to unlock buffers locked by DMABufferLock; New DMABufferAutoLock function.
  - To better accommodate new 8K/UHD2 and 12-bit workflows, we’ve introduced Fast Bitfile Switching (aka “dynamic reconfig”) and new per-device bitfile sets for KONA 5 and Corvid44-12G. This includes a new switchbitfile command-line tool, and new “dynamic device” API functions (e.g. IsDynamicDevice, LoadDynamicDevice, etc.).
  - New GetDeviceFrameInfo and DeviceAddressToFrameNumber functions.
  - New GetTsiMuxSyncFail function (requires firmware support).
  - The “inFrameCount” parameter of AutoCirculateInitForInput and AutoCirculateInitForOutput functions is now ignored if a legitimate frame range is specified in the “inStartFrameNumber” and “inEndFrameNumber” parameters.
  - New ApplySignalRoute function that accepts a std::map of input-to-output crosspoint connections.
  - New SDI Bypass Relay API that deprecates the old per-relay functions, replacing them with generic functions that have an index parameter for specifying the relay (connector-pair).
  - New GetBitfileInfoString function.
  - New HDR “getter” functions: GetVPIDTransferCharacteristics, GetVPIDColorimetry, GetVPIDVPIDLuminance.
  - Several methods now accept NTV2ChannelSets, for configuring multiple channels or SDI connectors in one API call.
- Signal Router:
  - Added new ResetFrom function to reset the CNTV2SignalRouter instance from a given NTV2XptConnections map.
  - Added new GetConnectionsFromRegs, CompareConnections and CreateFromString class methods.
- Data Types:
  - Defined new NTV2XptConnection to augment the NTV2Connection pair.
  - Defined new NTV2XptConnections to replace the poorly-named NTV2ActualConnections mapping.
- NTV2FormatDescriptor:
  - New GetTotalBytes function returns the total number of bytes required to hold the raster, including all planes of planar formats (which used to require multiple calls to GetTotalRasterBytes).
- AUTOCIRCULATE_STATUS:
  - Added handy new OptionFlags, WithCustomAnc, WithRP188, WithLTC, IsFieldMode and WithHDMIAuxData functions.
- Utilities:
  - Added new GetNTV2FrameRateFromNumeratorDenominator function.
  - Enlarged rowBytes parameters of Make10BitBlackLine, Make10BitWhiteLine, Make10BitLine, SetRasterLinesBlack, and CopyRaster functions to ULWords (uint32_t) to accommodate larger 8K/UHD2 rasters.
- Misc:
  - C++11: — This is AJAʼs first SDK that requires a C++11 compliant compiler by default. Instructions on how to build the SDK without C++11 compiler support are in the Getting Started guide.
  - Added SetLLDPInfo and GetLLDPInfo functions to CNTV2Config2110 class.
  - Added MultiLinkOut virtual widget in 12G-routable devices (KONA 5, Corvid44-12G).
- Transcode:
  - Added new Convert16BitARGBTo12BitRGBPacked function.
- CNTV2VPID:
  - Added new “to string” conversion functions: VersionString, StandardString, PictureRateString, SamplingString, ChannelString, DynamicRangeString, BitDepthString, LinkString, AudioString.
- Demos:
  - All:
    - The -b|--board command line option used in most demos has been deprecated in favor of -d|--device.
    - Specifying ? for -d|--device lists all available devices and exits the demo.
    - Enhanced logging: All capture demos log into a new DemoCapture category; playout demos log into a new DemoPlayout category.
    - NTV2Burn and NTV2LLBurn now use new Bypass Relay API (see above).
    - NTV2LLBurn now demonstrates a new custom HANC playout capability available on some OEM devices.
  - NTV2Capture:
    - Now grabs all available input timecodes. When anc capture is enabled, fixed --anc to record the number of F1 & F2 anc bytes captured per-frame.
    - The -a option still enables anc capture, but the --anc option now requires a filePath parameter, and it records the raw captured anc data into a binary data file (that can be played using ntv2player).
  - NTV2Player:
    - Added a new --anc option that will inject/play raw anc data supplied by the binary data file specified as its parameter. (ntv2capture can now create such binary anc files.)
  - NTV2OutputTestPattern:
    - -p|--pattern option now accepts pattern names or standard web color names.
    - New -v|--videoFormat option for specifying video format to override current device video format.
    - New --vanc option for specifying vanc mode.
    - New --pixelFormat option for specifying frame buffer pixel format.
- Driver:
  - Numerous DMA performance improvements to support 8K/UHD2 on KONA 5, Corvid44-12G.

SDK 16.2 changes (from 16.0)

New Device Support:
- IoX3 — `DEVICE_ID_IOX3 — A modern replacement for the IoXT
Improved 12-Bit RGB and 4:4:4 workflow support for 4K/UHD (Kona5, Corvid44-12G)
Expanded 64/32 audio channel support over multi-link SDI (Kona5, Corvid44/12G, Corvid88 and Corvid44)
API Changes:
- Bumped the actively-deprecated APIs and data types from SDK 14.3 to 15.2. If your code compiled under SDK 16.1, and fails to compile under SDK 16.2:
  1. Scroll up to “SDK 15.0”, then apply each listed change to your code, if applicable.
  2. Repeat step 1 for “SDK 15.1” and “SDK 15.2”.
- CNTV2Card:
  - New detailed GetDeviceFrameInfo overload.
  - New AncInsertGetReadInfo and AncExtractGetWriteInfo member functions.
  - New overloads for SetVANCShiftMode, SetNumberAudioChannels, SetAudioBufferSize, SetAudioLoopBack, and SetSDIOutputAudioSystem to operate on more than one channel, audio system or widget in a single function call.
  - Deprecated GetActiveFrameDimensions, GetNumberActiveLines, SetPCIAccessFrame, GetPCIAccessFrame and FlipFlopPage.
  - Members GetBaseAddress, GetRegisterBaseAddress and GetXena2FlashBaseAddress first deprecated in SDK 16.0 now produce compile-time warnings when used.
- New SDRAMAuditor class used by CNTV2SupportLogger to detect device SDRAM utilization clashes or conflicts.
- New NTV2BitfileHeaderParser class is now used commonly by all firmware-related classes for bitfile header parsing.
- NTV2TestPatternGen:
  - Two overloaded members DrawTestPattern, first deprecated in SDK 16.0, now produce compile-time warnings when used.
- NTV2FormatDescriptor:
  - New GetVideoWriteSize function.
- Utilities:
  - New GetAudioSamplesPerSecond, NTV2BitfileTypeToString functions.
- Device Features API:
  - New NTV2DeviceCanDoMultiLinkAudio, NTV2DeviceGetNumLUTBanks functions.

SDK changes after 16.2

The NTV2 SDK became open-source as of version 17.0. See the open-source documentation for SDK changes after 17.0.