Audio Pipelines#

This folder contains preconfigured audio pipelines for the FFVA application.

Table 24 FFVA Audio Pipelines#

Filename/Directory

Description

api directory

include folder for audio pipeline modules

src directory

contains preconfigured XMOS DSP audio pipelines

audio_pipeline.cmake

cmake for adding audio pipeline targets

Major Components#

The audio pipeline module provides the application with three API functions:

Listing 19 Audio Pipeline API (audio_pipeline.h)#
void audio_pipeline_init(
        void *input_app_data,
        void *output_app_data);

void audio_pipeline_input(
        void *input_app_data,
        int32_t **input_audio_frames,
        size_t ch_count,
        size_t frame_count);

int audio_pipeline_output(
        void *output_app_data,
        int32_t **output_audio_frames,
        size_t ch_count,
        size_t frame_count);

audio_pipeline_init#

This function has the role of creating the audio pipeline task(s) and initializing DSP stages.

audio_pipeline_input#

This function is application defined and populates input audio frames used by the audio pipeline. In FFVA, this function is defined in main.c.

audio_pipeline_output#

This function is application defined and populates input audio frames used by the audio pipeline. In FFVA, this function is defined in main.c.