From 6b44e40ee8dba415213468afe14f7202b42ec429 Mon Sep 17 00:00:00 2001 From: Jeff Epler Date: Wed, 24 Jul 2019 20:57:32 -0500 Subject: audiocore: Factor from audioio When nrf pwm audio is introduced, it will be called `audiopwmio`. To enable code sharing with the existing (dac-based) `audioio`, factor the sample and mixer types to `audiocore`. INCOMPATIBLE CHANGE: Now, `Mixer`, `RawSample` and `WaveFile` must be imported from `audiocore`, not `audioio`. --- shared-module/audiocore/WaveFile.h | 70 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 shared-module/audiocore/WaveFile.h (limited to 'shared-module/audiocore/WaveFile.h') diff --git a/shared-module/audiocore/WaveFile.h b/shared-module/audiocore/WaveFile.h new file mode 100644 index 000000000..97dd6a46f --- /dev/null +++ b/shared-module/audiocore/WaveFile.h @@ -0,0 +1,70 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2018 Scott Shawcroft + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef MICROPY_INCLUDED_SHARED_MODULE_AUDIOIO_WAVEFILE_H +#define MICROPY_INCLUDED_SHARED_MODULE_AUDIOIO_WAVEFILE_H + +#include "py/obj.h" + +#include "shared-module/audiocore/__init__.h" + +typedef struct { + mp_obj_base_t base; + uint8_t* buffer; + uint32_t buffer_length; + uint8_t* second_buffer; + uint32_t second_buffer_length; + uint32_t file_length; // In bytes + uint16_t data_start; // Where the data values start + uint8_t bits_per_sample; + uint16_t buffer_index; + uint32_t bytes_remaining; + + uint8_t channel_count; + uint32_t sample_rate; + + uint32_t len; + pyb_file_obj_t* file; + + uint32_t read_count; + uint32_t left_read_count; + uint32_t right_read_count; +} audioio_wavefile_obj_t; + +// These are not available from Python because it may be called in an interrupt. +void audioio_wavefile_reset_buffer(audioio_wavefile_obj_t* self, + bool single_channel, + uint8_t channel); +audioio_get_buffer_result_t audioio_wavefile_get_buffer(audioio_wavefile_obj_t* self, + bool single_channel, + uint8_t channel, + uint8_t** buffer, + uint32_t* buffer_length); // length in bytes +void audioio_wavefile_get_buffer_structure(audioio_wavefile_obj_t* self, bool single_channel, + bool* single_buffer, bool* samples_signed, + uint32_t* max_buffer_length, uint8_t* spacing); + +#endif // MICROPY_INCLUDED_SHARED_MODULE_AUDIOIO_WAVEFILE_H -- cgit v1.2.3