95 lines
3.8 KiB
C
95 lines
3.8 KiB
C
/*
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* This file is part of the Micro Python 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 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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#include "shared-bindings/audioio/RawSample.h"
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#include <stdint.h>
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#include "shared-module/audioio/RawSample.h"
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void common_hal_audioio_rawsample_construct(audioio_rawsample_obj_t* self,
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uint8_t* buffer,
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uint32_t len,
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uint8_t bytes_per_sample,
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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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self->buffer = buffer;
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self->bits_per_sample = bytes_per_sample * 8;
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self->samples_signed = samples_signed;
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self->len = len;
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self->channel_count = channel_count;
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self->sample_rate = sample_rate;
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self->buffer_read = false;
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}
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void common_hal_audioio_rawsample_deinit(audioio_rawsample_obj_t* self) {
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self->buffer = NULL;
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}
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bool common_hal_audioio_rawsample_deinited(audioio_rawsample_obj_t* self) {
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return self->buffer == NULL;
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}
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uint32_t common_hal_audioio_rawsample_get_sample_rate(audioio_rawsample_obj_t* self) {
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return self->sample_rate;
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}
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void common_hal_audioio_rawsample_set_sample_rate(audioio_rawsample_obj_t* self,
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uint32_t sample_rate) {
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self->sample_rate = sample_rate;
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}
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void audioio_rawsample_reset_buffer(audioio_rawsample_obj_t* self,
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bool single_channel,
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uint8_t channel) {
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}
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audioio_get_buffer_result_t audioio_rawsample_get_buffer(audioio_rawsample_obj_t* self,
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bool single_channel,
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uint8_t channel,
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uint8_t** buffer,
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uint32_t* buffer_length) {
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*buffer_length = self->len;
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if (single_channel) {
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*buffer = self->buffer + (channel % self->channel_count) * (self->bits_per_sample / 8);
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} else {
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*buffer = self->buffer;
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}
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return GET_BUFFER_DONE;
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}
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void audioio_rawsample_get_buffer_structure(audioio_rawsample_obj_t* self, bool single_channel,
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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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*single_buffer = true;
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*samples_signed = self->samples_signed;
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*max_buffer_length = self->len;
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if (single_channel) {
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*spacing = self->channel_count;
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} else {
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*spacing = 1;
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}
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}
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