FLAC Codec Example

This document corresponds to the example code: sifli-sdk/example/multimedia/audio/flac/src/main.c. This example demonstrates the complete chain of Recording → PCM → FLAC Encoding → FLAC Decoding → Speaker Playback and provides 3 MSH command interfaces.

1. Commands Provided by the Example

The code supports the following commands (prompts are also printed in main()):

  • flac_test [seconds]

  • Function: Records audio for the specified number of seconds to /mic_record.pcm, then encodes it to /test.flac, and finally decodes it for playback.

  • Default: 10 seconds if seconds is not provided

  • flac_enc [in] [out]

  • Function: Encodes a PCM file to FLAC

  • Default: /mic_record.pcm → /test.flac

  • flac_play [file]

  • Function: Decodes a FLAC file and plays it

  • Default: plays /test.flac