circuitpython/shared-module/audiomp3/MP3Decoder.h
Jeff Epler 4d4d654677 MP3Decoder: set the nonblocking flag as needed
this makes SSL sockets (which return readable when not yet actually
readable) work better.
2024-06-13 11:11:17 -05:00

62 lines
1.8 KiB
C

// This file is part of the CircuitPython project: https://circuitpython.org
//
// SPDX-FileCopyrightText: Copyright (c) 2018 Scott Shawcroft
// SPDX-FileCopyrightText: Copyright (c) 2019 Jeff Epler for Adafruit Industries
//
// SPDX-License-Identifier: MIT
#pragma once
#include "supervisor/background_callback.h"
#include "extmod/vfs_fat.h"
#include "py/obj.h"
#include "shared-module/audiocore/__init__.h"
typedef struct {
uint8_t *buf;
mp_int_t size;
mp_int_t read_off;
mp_int_t write_off;
} mp3_input_buffer_t;
typedef struct {
mp_obj_base_t base;
struct _MP3DecInfo *decoder;
background_callback_t inbuf_fill_cb;
mp3_input_buffer_t inbuf;
int16_t *pcm_buffer[2];
uint32_t len;
uint32_t frame_buffer_size;
uint32_t sample_rate;
mp_obj_t stream;
uint8_t buffer_index;
uint8_t channel_count;
bool eof;
bool block_ok;
mp_obj_t settimeout_args[3];
int8_t other_channel;
int8_t other_buffer_index;
uint32_t samples_decoded;
} audiomp3_mp3file_obj_t;
// These are not available from Python because it may be called in an interrupt.
void audiomp3_mp3file_reset_buffer(audiomp3_mp3file_obj_t *self,
bool single_channel_output,
uint8_t channel);
audioio_get_buffer_result_t audiomp3_mp3file_get_buffer(audiomp3_mp3file_obj_t *self,
bool single_channel_output,
uint8_t channel,
uint8_t **buffer,
uint32_t *buffer_length); // length in bytes
void audiomp3_mp3file_get_buffer_structure(audiomp3_mp3file_obj_t *self, bool single_channel_output,
bool *single_buffer, bool *samples_signed,
uint32_t *max_buffer_length, uint8_t *spacing);
float audiomp3_mp3file_get_rms_level(audiomp3_mp3file_obj_t *self);
uint32_t common_hal_audiomp3_mp3file_get_samples_decoded(audiomp3_mp3file_obj_t *self);