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circuitpython/atmel-samd/common-hal/audioio/AudioOut.h

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
*
* 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_ATMEL_SAMD_COMMON_HAL_AUDIOIO_AUDIOOUT_H
#define MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_AUDIOIO_AUDIOOUT_H
#include "common-hal/microcontroller/Pin.h"
#include "asf/sam0/drivers/tc/tc.h"
#include "extmod/vfs_fat_file.h"
#include "py/obj.h"
typedef struct {
mp_obj_base_t base;
const mcu_pin_obj_t *pin;
uint32_t frequency;
uint8_t* buffer;
// File playback specific:
uint8_t* second_buffer;
DmacDescriptor* second_descriptor;
uint32_t file_length; // In bytes
uint16_t data_start; // Where the data values start
uint8_t bytes_per_sample;
bool signed_samples;
uint16_t last_loaded_block;
uint32_t bytes_remaining;
bool loop;
uint32_t len;
pyb_file_obj_t* file;
} audioio_audioout_obj_t;
void audioout_reset(void);
void audioout_background(void);
#endif // MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_AUDIOIO_AUDIOOUT_H