“libajabase” Classes

This is a handy collection of platform-independent classes and templates that provide several practical, basic services including…

• Memory Management
  • AJARefPtr — automatic reference-counted pointers
  • AJACircularBuffer — a circular ring of fixed-size buffers, useful for video streaming
  • AJAMemory —
  • AJABuffer —
• File Management
  • AJADiskStatus — for reporting free space
  • AJAFileIO — platform-independent host file I/O
• Timing
  • AJAPerformance and AJATimer — used for timing purposes
  • AJATimeBase — a high-resolution time base, with many conversion capabilities
  • AJATime —
• Threading and Synchronization
  • AJAThread — thread creation and management
  • AJAAtomic — atomic swap, increment or decrement operations
  • AJADebug — debug logging
  • AJAEvent — event signaling
  • AJALock and AJAAutoLock — mutexes and critical sections
• Video and Audio
  • AJAPixelFormat — describes many popular pixel buffer (raster) formats
  • AJATestPatternGen — for generating test patterns in a variety of pixel (raster) formats
  • AJATimeCodeBurn — “burns” a timecode into a raster
  • AJAWavWriterAudioFormat — writes audio samples into a .WAV file
  • AJA_GenerateAudioTone — generates audio samples
  • AJATimeCode —
  • AJADPXFileIO and DpxHdr
• Miscellaneous
  • AJASystemInfo — get common information about the system
  • the “popt library” for parsing command line arguments
  • CreateGuid — create globally unique identifier strings
  • AJAPersistence — save/retrieve integer/string/blob data to/from a host userʼs registry/preferences store using string keys
  • sqlite3 — the SQLite mini RDBMS
  • AJAPnp — get notified when AJA devices get attached/detached to/from the host

Note

Avoid deriving subclasses from AJA-provided classes. AJA recommends using aggregation techniques to incorporate NTV2 functionality into your own classes.

Prior to SDK 15.0, these “base” classes were compiled into their own libajabase library. Starting with SDK 15.0, they were merged into the libajantv2 library.

Starting in SDK 16.0, the default platform-specific implementations of AJALock and AJAAutoLock are provided by the C++11 compiler. See gs-sdkbuild for details.