99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
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//
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// SPDX-FileCopyrightText: Copyright (c) 2024 Tim Chinowsky
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//
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// SPDX-License-Identifier: MIT
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#include "shared-bindings/audiocore/RawSample.h"
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#include <stdint.h>
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#include "shared-module/audiocore/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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bool single_buffer) {
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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->single_buffer = single_buffer;
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self->buffer_index = 0;
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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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uint8_t common_hal_audioio_rawsample_get_bits_per_sample(audioio_rawsample_obj_t *self) {
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return self->bits_per_sample;
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}
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uint8_t common_hal_audioio_rawsample_get_channel_count(audioio_rawsample_obj_t *self) {
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return self->channel_count;
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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_output,
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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_output,
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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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if (self->single_buffer) {
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*buffer_length = self->len;
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if (single_channel_output) {
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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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} else {
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*buffer_length = self->len / 2;
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if (single_channel_output) {
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*buffer = self->buffer + (channel % self->channel_count) * (self->bits_per_sample / 8) + \
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self->len / 2 * self->buffer_index;
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} else {
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*buffer = self->buffer + self->len / 2 * self->buffer_index;
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}
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self->buffer_index = 1 - self->buffer_index;
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return GET_BUFFER_DONE;
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}
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}
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void audioio_rawsample_get_buffer_structure(audioio_rawsample_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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*single_buffer = self->single_buffer;
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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_output) {
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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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