circuitpython/shared-module/audiocore/WaveFile.h

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

72 lines
2.6 KiB
C
Raw Permalink Normal View History

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Scott Shawcroft
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_SHARED_MODULE_AUDIOIO_WAVEFILE_H
#define MICROPY_INCLUDED_SHARED_MODULE_AUDIOIO_WAVEFILE_H
#include "extmod/vfs_fat.h"
#include "py/obj.h"
#include "shared-module/audiocore/__init__.h"
2018-06-14 18:47:40 -04:00
typedef struct {
mp_obj_base_t base;
2021-03-15 09:57:36 -04:00
uint8_t *buffer;
uint32_t buffer_length;
2021-03-15 09:57:36 -04:00
uint8_t *second_buffer;
uint32_t second_buffer_length;
uint32_t file_length; // In bytes
uint16_t data_start; // Where the data values start
uint8_t bits_per_sample;
uint16_t buffer_index;
uint32_t bytes_remaining;
uint8_t channel_count;
uint32_t sample_rate;
uint32_t len;
2021-03-15 09:57:36 -04:00
pyb_file_obj_t *file;
uint32_t read_count;
uint32_t left_read_count;
uint32_t right_read_count;
} audioio_wavefile_obj_t;
// These are not available from Python because it may be called in an interrupt.
2021-03-15 09:57:36 -04:00
void audioio_wavefile_reset_buffer(audioio_wavefile_obj_t *self,
bool single_channel_output,
2021-03-15 09:57:36 -04:00
uint8_t channel);
audioio_get_buffer_result_t audioio_wavefile_get_buffer(audioio_wavefile_obj_t *self,
bool single_channel_output,
2021-03-15 09:57:36 -04:00
uint8_t channel,
uint8_t **buffer,
uint32_t *buffer_length); // length in bytes
void audioio_wavefile_get_buffer_structure(audioio_wavefile_obj_t *self, bool single_channel_output,
2021-03-15 09:57:36 -04:00
bool *single_buffer, bool *samples_signed,
uint32_t *max_buffer_length, uint8_t *spacing);
#endif // MICROPY_INCLUDED_SHARED_MODULE_AUDIOIO_WAVEFILE_H