89 lines
3.6 KiB
C
89 lines
3.6 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 DeanM 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/audiomixer/Mixer.h"
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#include "shared-bindings/audiomixer/MixerVoice.h"
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#include "shared-module/audiomixer/MixerVoice.h"
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#include <stdint.h>
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#include "py/runtime.h"
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#include "shared-module/audiomixer/__init__.h"
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#include "shared-module/audiocore/RawSample.h"
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void common_hal_audiomixer_mixervoice_construct(audiomixer_mixervoice_obj_t *self) {
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self->sample = NULL;
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self->level = 1 << 15;
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}
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void common_hal_audiomixer_mixervoice_set_parent(audiomixer_mixervoice_obj_t *self, audiomixer_mixer_obj_t *parent) {
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self->parent = parent;
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}
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float common_hal_audiomixer_mixervoice_get_level(audiomixer_mixervoice_obj_t *self) {
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return (float)self->level / (1 << 15);
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}
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void common_hal_audiomixer_mixervoice_set_level(audiomixer_mixervoice_obj_t *self, float level) {
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self->level = level * (1 << 15);
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}
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void common_hal_audiomixer_mixervoice_play(audiomixer_mixervoice_obj_t *self, mp_obj_t sample, bool loop) {
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if (audiosample_sample_rate(sample) != self->parent->sample_rate) {
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mp_raise_ValueError(translate("The sample's sample rate does not match the mixer's"));
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}
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if (audiosample_channel_count(sample) != self->parent->channel_count) {
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mp_raise_ValueError(translate("The sample's channel count does not match the mixer's"));
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}
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if (audiosample_bits_per_sample(sample) != self->parent->bits_per_sample) {
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mp_raise_ValueError(translate("The sample's bits_per_sample does not match the mixer's"));
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}
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bool single_buffer;
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bool samples_signed;
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uint32_t max_buffer_length;
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uint8_t spacing;
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audiosample_get_buffer_structure(sample, false, &single_buffer, &samples_signed,
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&max_buffer_length, &spacing);
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if (samples_signed != self->parent->samples_signed) {
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mp_raise_ValueError(translate("The sample's signedness does not match the mixer's"));
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}
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self->sample = sample;
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self->loop = loop;
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audiosample_reset_buffer(sample, false, 0);
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audioio_get_buffer_result_t result = audiosample_get_buffer(sample, false, 0, (uint8_t **)&self->remaining_buffer, &self->buffer_length);
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// Track length in terms of words.
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self->buffer_length /= sizeof(uint32_t);
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self->more_data = result == GET_BUFFER_MORE_DATA;
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}
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bool common_hal_audiomixer_mixervoice_get_playing(audiomixer_mixervoice_obj_t *self) {
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return self->sample != NULL;
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}
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void common_hal_audiomixer_mixervoice_stop(audiomixer_mixervoice_obj_t *self) {
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self->sample = NULL;
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}
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