FLAC Example

源码路径：example/multimedia/audio/flac

Supported Platforms

This example demonstrates how to use the FLAC audio codec library for recording、encoding、decode and play，include：
- Record PCM audio data from the microphone through mic
- Encoding: Compress PCM data using a FLAC encoder
- Decoding: Use a FLAC decoder to decompress audio data
- Playback: Play the decoded audio data through the speaker

Before running this example, prepare:
- A development board supported by this example (Supported Platforms).
- Speaker.

This example needs to read and write files, so it needs to use a file system. Configure the FAT file system:

mc_fat

Tip

mnt_init 中mount root分区。

mc_audcodec_audprc

mc_audio

mc_audio_manager

mc_flac

Switch to the example project directory and run the scons command to execute compilation:

> scons --board=sf32lb52-lcd_a128r16 -j16

Switch to the example project/build_xx directory and run uart_download.bat, select the port as prompted for download:

$ ./uart_download.bat

     Uart Download

please input the serial port num:5

For detailed steps on compilation and download, please refer to Quick Start.

After the example starts:

Manual command：

flac_test : By default, record 10 seconds to /mic_record.pcm, encode and decode it for playback. You can also set the recording duration yourself, for example: flac_test 5 (record for 5 seconds)
flac_enc : Read PCM data from /mic_record.pcm and encode it to /test.flac
flac_play : Decode /test.flac and play it