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Bit Stream Detector (for S/PDIF)

Product Details

The Bit Stream Detector (for S/PDIF) library is used to differentiate among S/PDIF structured audio bit streams. S/PDIF is a Digital Audio Interface that can encapsulate a combination of encoded or uncompressed audio bit streams in a standardized block format. Each S/PDIF structured block contains unique stream type information which can be detected and used to invoke the relevant decoder such as Dolby® Digital (AC-3), DTS, MPEG Audio and WMA Pro.

Features

  • API: C callable 'push'-type API
  • Compatible with Analog Devices Blackfin processor family
  • Rigorously tested
  • The module has no dependencies on processor peripherals or registers, adding greater system flexibility and ease of use.
  • Conformance Standard: IEC 60958, IEC 61937
  • Target Processor: Code compatible across the Blackfin processor family ADSP-BF5xx.
  • Framework dependencies: None. No dependencies on processor peripherals or registers.
  • Release format: Object code module with C source wrapper
  • Input format: Little-endian 16-bit unsigned fixed-point bitstream
  • Output format: Integer stream-type code
  • Input buffer bytes per block: 8192
  • Sample Rate: 32, 44.1 and 48 kHz for PCM coded audio samples
  • Multi-channel: Fully re-entrant and multi-instancing capable

Product Downloads

System Requirements

  • Windows XP Professional SP3 (32-bit only).
  • Windows Vista Business/Enterprise/Ultimate SP2 (32-bit only). It is recommended to install the software in a non-UAC-protected location.
  • Windows 7 Professional/Enterprise/Ultimate (32 and 64-bit). It is recommended to install the software in a non-UAC-protected location.
  • Minimum of 2 GHz single core processor, 3.3 GHz dual core is recommended.
  • Minimum of 1 GB memory (RAM), 4 GB is recommended.
  • Minimum of 2 GB hard disk (HDD) space is required.

Related Software 

Related Hardware

  • Processor: ADSP-BF5xx, code compatible across the Blackfin processor family
  • Hardware: Evaluation board, for example ADSP-BF537 EZ-KIT Lite®

Performance Metrics

MIPS summary:

Code memory (KiB) Data RAM (KiB) Constant Data Tables (KiB) MIPS
Average Peak
2.4 8.2 0.13 0.28 0.75

  • This table highlights expected MIPS performance. MIPS figures can be affected by changes in code and data placement in memory.
  • MIPS were measured using the following configuration:
  • Processor: ADSP-BF533, ADSP-BF548, ADSP-BF527
  • Input buffer size of 8192 bytes
  • All code and data were placed in L1 memory
  • Worst-case input test vector, recorded from a range of DVD players that support DTS, AC3, PCM S/PDIF output.
  • Instruction and Bank A data caches enabled and configured in write-through mode.
  • In the table above all figures refer to one instance of BSDET. "Data RAM" includes stack, instance state and input buffer.
  • Heap (or "malloc()") is not used.
  • 1 KiB = 1024 Bytes.

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Availability and Licensing

Each module supports the Analog Devices, Inc. (ADI) Blackfin or SHARC Processor family and is a licensed product that is available in object code format. Recipients must sign or accept a license agreement with ADI prior to being shipped or downloading the modules identified in the license agreement.

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