72 lines
2.9 KiB
C
72 lines
2.9 KiB
C
/*
|
|
* 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"
|
|
|
|
typedef struct {
|
|
mp_obj_base_t base;
|
|
uint8_t* buffer;
|
|
uint32_t buffer_length;
|
|
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;
|
|
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.
|
|
void audioio_wavefile_reset_buffer(audioio_wavefile_obj_t* self,
|
|
bool single_channel,
|
|
uint8_t channel);
|
|
audioio_get_buffer_result_t audioio_wavefile_get_buffer(audioio_wavefile_obj_t* self,
|
|
bool single_channel,
|
|
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,
|
|
bool* single_buffer, bool* samples_signed,
|
|
uint32_t* max_buffer_length, uint8_t* spacing);
|
|
|
|
#endif // MICROPY_INCLUDED_SHARED_MODULE_AUDIOIO_WAVEFILE_H
|