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pv_speaker_demo.c
pv_speaker_demo.c
 
 

README.md

PvSpeaker Demo for C

This project contains a C command-line demo for PvSpeaker that demonstrates how to use PvSpeaker to play audio from a single-channel PCM WAV file.

PvSpeaker

PvSpeaker is an easy-to-use, cross-platform audio player designed for real-time speech audio processing. It allows developers to send raw PCM frames to an audio device's output stream.

Requirements

  • CMake 3.4+.
  • C99 compatible compiler.
  • Windows: MinGW.

Compatibility

  • Linux (x86_64)
  • macOS (x86_64, arm64)
  • Windows (amd64, arm64)
  • Raspberry Pi (3, 4 and 5)

Compiling

Run the following commands to build the demo app:

git submodule update --init --recursive
cmake -S . -B build -DPV_SPEAKER_PLATFORM={PV_SPEAKER_PLATFORM}
cmake --build build

The {PV_SPEAKER_PLATFORM} variable will set the compilation flags for the given platform. Exclude this variable to get a list of possible values.

Usage

To see the usage options for the demo:

./pv_speaker_demo

Get a list of available audio player devices:

./pv_speaker_demo --show_audio_devices

Play from a single-channel PCM WAV file with a given audio device index:

./pv_speaker_demo -i test.wav -d 2

Hit Ctrl+C if you wish to stop playing audio before it completes. If no audio device index (-d) is provided, the demo will use the system's default audio player device.