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/*
* 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_AUDIOMIXER_MIXER_H
#define MICROPY_INCLUDED_SHARED_MODULE_AUDIOMIXER_MIXER_H
#include "py/obj.h"
#include "py/objtuple.h"
#include "shared-module/audiocore/__init__.h"
typedef struct {
mp_obj_base_t base;
uint32_t *first_buffer;
uint32_t *second_buffer;
uint32_t len; // in words
uint8_t bits_per_sample;
bool use_first_buffer;
bool samples_signed;
uint8_t channel_count;
uint32_t sample_rate;
uint32_t read_count;
uint32_t left_read_count;
uint32_t right_read_count;
uint8_t voice_count;
mp_obj_tuple_t *voice_tuple;
mp_obj_t voice[];
} audiomixer_mixer_obj_t;
// These are not available from Python because it may be called in an interrupt.
void audiomixer_mixer_reset_buffer(audiomixer_mixer_obj_t *self,
bool single_channel_output,
uint8_t channel);
audioio_get_buffer_result_t audiomixer_mixer_get_buffer(audiomixer_mixer_obj_t *self,
bool single_channel_output,
uint8_t channel,
uint8_t **buffer,
uint32_t *buffer_length); // length in bytes
void audiomixer_mixer_get_buffer_structure(audiomixer_mixer_obj_t *self, bool single_channel_output,
bool *single_buffer, bool *samples_signed,
uint32_t *max_buffer_length, uint8_t *spacing);
#endif // MICROPY_INCLUDED_SHARED_MODULE_AUDIOMIXER_MIXER_H
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