86 lines
4.0 KiB
C
86 lines
4.0 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 Dan Halbert for Adafruit Industries
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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_AUDIOCORE__INIT__H
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#define MICROPY_INCLUDED_SHARED_MODULE_AUDIOCORE__INIT__H
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#include <stdbool.h>
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#include <stdint.h>
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#include "py/obj.h"
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#include "py/proto.h"
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typedef enum {
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GET_BUFFER_DONE, // No more data to read
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GET_BUFFER_MORE_DATA, // More data to read.
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GET_BUFFER_ERROR, // Error while reading data.
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} audioio_get_buffer_result_t;
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typedef uint32_t (*audiosample_sample_rate_fun)(mp_obj_t);
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typedef uint8_t (*audiosample_bits_per_sample_fun)(mp_obj_t);
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typedef uint8_t (*audiosample_channel_count_fun)(mp_obj_t);
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typedef void (*audiosample_reset_buffer_fun)(mp_obj_t,
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bool single_channel_output, uint8_t audio_channel);
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typedef audioio_get_buffer_result_t (*audiosample_get_buffer_fun)(mp_obj_t,
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bool single_channel_output, uint8_t channel, uint8_t **buffer,
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uint32_t *buffer_length);
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typedef void (*audiosample_get_buffer_structure_fun)(mp_obj_t,
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bool single_channel_output, bool *single_buffer,
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bool *samples_signed, uint32_t *max_buffer_length,
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uint8_t *spacing);
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typedef struct _audiosample_p_t {
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MP_PROTOCOL_HEAD // MP_QSTR_protocol_audiosample
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audiosample_sample_rate_fun sample_rate;
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audiosample_bits_per_sample_fun bits_per_sample;
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audiosample_channel_count_fun channel_count;
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audiosample_reset_buffer_fun reset_buffer;
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audiosample_get_buffer_fun get_buffer;
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audiosample_get_buffer_structure_fun get_buffer_structure;
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} audiosample_p_t;
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uint32_t audiosample_sample_rate(mp_obj_t sample_obj);
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uint8_t audiosample_bits_per_sample(mp_obj_t sample_obj);
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uint8_t audiosample_channel_count(mp_obj_t sample_obj);
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void audiosample_reset_buffer(mp_obj_t sample_obj, bool single_channel_output, uint8_t audio_channel);
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audioio_get_buffer_result_t audiosample_get_buffer(mp_obj_t sample_obj,
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bool single_channel_output,
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uint8_t channel,
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uint8_t **buffer, uint32_t *buffer_length);
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void audiosample_get_buffer_structure(mp_obj_t sample_obj, 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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void audiosample_convert_u8m_s16s(int16_t *buffer_out, const uint8_t *buffer_in, size_t nframes);
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void audiosample_convert_u8s_s16s(int16_t *buffer_out, const uint8_t *buffer_in, size_t nframes);
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void audiosample_convert_s8m_s16s(int16_t *buffer_out, const int8_t *buffer_in, size_t nframes);
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void audiosample_convert_s8s_s16s(int16_t *buffer_out, const int8_t *buffer_in, size_t nframes);
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void audiosample_convert_u16m_s16s(int16_t *buffer_out, const uint16_t *buffer_in, size_t nframes);
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void audiosample_convert_u16s_s16s(int16_t *buffer_out, const uint16_t *buffer_in, size_t nframes);
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void audiosample_convert_s16m_s16s(int16_t *buffer_out, const int16_t *buffer_in, size_t nframes);
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#endif // MICROPY_INCLUDED_SHARED_MODULE_AUDIOCORE__INIT__H
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