decoder__backend_8h_source.html

#pragma once


#include "decoder.h"

#include <stdio.h>


typedef struct {

    esp_err_t (*open)(FILE *f, decoder_format_t *fmt);

    esp_err_t (*read)(void *pcm, size_t cap_bytes, size_t *got_bytes);

    void (*close)(void);

} decoder_backend_t;


extern const decoder_backend_t decoder_mp3_backend;

extern const decoder_backend_t decoder_wav_backend;

decoder.h
Audio file decoder: turns an MP3 or WAV file into interleaved PCM frames.

decoder_mp3_backend
const decoder_backend_t decoder_mp3_backend
Definition decoder_mp3.c:159

decoder_wav_backend
const decoder_backend_t decoder_wav_backend
Definition decoder_wav.c:151

decoder_backend_t
One format backend (MP3 or WAV). Single-stream: one open at a time.
Definition decoder_backend.h:19

decoder_backend_t::open
esp_err_t(* open)(FILE *f, decoder_format_t *fmt)
Definition decoder_backend.h:21

decoder_backend_t::close
void(* close)(void)
Definition decoder_backend.h:25

decoder_backend_t::read
esp_err_t(* read)(void *pcm, size_t cap_bytes, size_t *got_bytes)
Definition decoder_backend.h:23

decoder_format_t
PCM format of the open stream, read once after decoder_open().
Definition decoder.h:44