70 lines
2.6 KiB
C
70 lines
2.6 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018 Scott Shawcroft
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef MICROPY_INCLUDED_SHARED_MODULE_AUDIOMIXER_MIXER_H
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#define MICROPY_INCLUDED_SHARED_MODULE_AUDIOMIXER_MIXER_H
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#include "py/obj.h"
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#include "py/objtuple.h"
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#include "shared-module/audiocore/__init__.h"
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typedef struct {
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mp_obj_base_t base;
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uint32_t *first_buffer;
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uint32_t *second_buffer;
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uint32_t len; // in words
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uint8_t bits_per_sample;
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bool use_first_buffer;
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bool samples_signed;
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uint8_t channel_count;
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uint32_t sample_rate;
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uint32_t read_count;
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uint32_t left_read_count;
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uint32_t right_read_count;
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uint8_t voice_count;
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mp_obj_tuple_t *voice_tuple;
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mp_obj_t voice[];
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} audiomixer_mixer_obj_t;
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// These are not available from Python because it may be called in an interrupt.
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void audiomixer_mixer_reset_buffer(audiomixer_mixer_obj_t *self,
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bool single_channel_output,
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uint8_t channel);
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audioio_get_buffer_result_t audiomixer_mixer_get_buffer(audiomixer_mixer_obj_t *self,
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bool single_channel_output,
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uint8_t channel,
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uint8_t **buffer,
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uint32_t *buffer_length); // length in bytes
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void audiomixer_mixer_get_buffer_structure(audiomixer_mixer_obj_t *self, bool single_channel_output,
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bool *single_buffer, bool *samples_signed,
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uint32_t *max_buffer_length, uint8_t *spacing);
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#endif // MICROPY_INCLUDED_SHARED_MODULE_AUDIOMIXER_MIXER_H
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