268 lines
11 KiB
C
268 lines
11 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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* Copyright (c) 2019 Jeff Epler 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 <stdint.h>
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#include "lib/utils/context_manager_helpers.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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#include "shared-bindings/audiomp3/MP3Decoder.h"
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#include "shared-bindings/util.h"
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#include "supervisor/shared/translate.h"
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//| class MP3:
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//| """Load a mp3 file for audio playback"""
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//|
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//| def __init__(self, file: typing.BinaryIO, buffer: bytearray):
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//|
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//| """Load a .mp3 file for playback with `audioio.AudioOut` or `audiobusio.I2SOut`.
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//|
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//| :param typing.BinaryIO file: Already opened mp3 file
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//| :param bytearray buffer: Optional pre-allocated buffer, that will be split in half and used for double-buffering of the data. If not provided, two buffers are allocated internally. The specific buffer size required depends on the mp3 file.
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//|
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//|
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//| Playing a mp3 file from flash::
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//|
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//| import board
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//| import audiomp3
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//| import audioio
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//| import digitalio
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//|
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//| # Required for CircuitPlayground Express
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//| speaker_enable = digitalio.DigitalInOut(board.SPEAKER_ENABLE)
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//| speaker_enable.switch_to_output(value=True)
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//|
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//| data = open("cplay-16bit-16khz-64kbps.mp3", "rb")
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//| mp3 = audiomp3.MP3Decoder(data)
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//| a = audioio.AudioOut(board.A0)
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//|
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//| print("playing")
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//| a.play(mp3)
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//| while a.playing:
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//| pass
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//| print("stopped")"""
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//| ...
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//|
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STATIC mp_obj_t audiomp3_mp3file_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
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mp_arg_check_num(n_args, kw_args, 1, 2, false);
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audiomp3_mp3file_obj_t *self = m_new_obj(audiomp3_mp3file_obj_t);
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self->base.type = &audiomp3_mp3file_type;
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if (!MP_OBJ_IS_TYPE(args[0], &mp_type_fileio)) {
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mp_raise_TypeError(translate("file must be a file opened in byte mode"));
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}
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uint8_t *buffer = NULL;
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size_t buffer_size = 0;
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if (n_args >= 2) {
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(args[1], &bufinfo, MP_BUFFER_WRITE);
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buffer = bufinfo.buf;
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buffer_size = bufinfo.len;
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}
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common_hal_audiomp3_mp3file_construct(self, MP_OBJ_TO_PTR(args[0]),
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buffer, buffer_size);
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return MP_OBJ_FROM_PTR(self);
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}
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//| def deinit(self, ) -> Any:
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//| """Deinitialises the MP3 and releases all memory resources for reuse."""
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//| ...
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//|
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STATIC mp_obj_t audiomp3_mp3file_deinit(mp_obj_t self_in) {
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audiomp3_mp3file_obj_t *self = MP_OBJ_TO_PTR(self_in);
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common_hal_audiomp3_mp3file_deinit(self);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(audiomp3_mp3file_deinit_obj, audiomp3_mp3file_deinit);
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STATIC void check_for_deinit(audiomp3_mp3file_obj_t *self) {
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if (common_hal_audiomp3_mp3file_deinited(self)) {
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raise_deinited_error();
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}
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}
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//| def __enter__(self, ) -> Any:
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//| """No-op used by Context Managers."""
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//| ...
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//|
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// Provided by context manager helper.
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//| def __exit__(self, ) -> Any:
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//| """Automatically deinitializes the hardware when exiting a context. See
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//| :ref:`lifetime-and-contextmanagers` for more info."""
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//| ...
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//|
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STATIC mp_obj_t audiomp3_mp3file_obj___exit__(size_t n_args, const mp_obj_t *args) {
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(void)n_args;
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common_hal_audiomp3_mp3file_deinit(args[0]);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(audiomp3_mp3file___exit___obj, 4, 4, audiomp3_mp3file_obj___exit__);
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//| file: Any = ...
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//| """File to play back."""
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//|
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STATIC mp_obj_t audiomp3_mp3file_obj_get_file(mp_obj_t self_in) {
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audiomp3_mp3file_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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return self->file;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(audiomp3_mp3file_get_file_obj, audiomp3_mp3file_obj_get_file);
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STATIC mp_obj_t audiomp3_mp3file_obj_set_file(mp_obj_t self_in, mp_obj_t file) {
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audiomp3_mp3file_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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if (!MP_OBJ_IS_TYPE(file, &mp_type_fileio)) {
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mp_raise_TypeError(translate("file must be a file opened in byte mode"));
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}
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common_hal_audiomp3_mp3file_set_file(self, file);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(audiomp3_mp3file_set_file_obj, audiomp3_mp3file_obj_set_file);
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const mp_obj_property_t audiomp3_mp3file_file_obj = {
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.base.type = &mp_type_property,
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.proxy = {(mp_obj_t)&audiomp3_mp3file_get_file_obj,
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(mp_obj_t)&audiomp3_mp3file_set_file_obj,
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(mp_obj_t)&mp_const_none_obj},
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};
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//| sample_rate: Any = ...
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//| """32 bit value that dictates how quickly samples are loaded into the DAC
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//| in Hertz (cycles per second). When the sample is looped, this can change
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//| the pitch output without changing the underlying sample."""
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//|
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STATIC mp_obj_t audiomp3_mp3file_obj_get_sample_rate(mp_obj_t self_in) {
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audiomp3_mp3file_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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return MP_OBJ_NEW_SMALL_INT(common_hal_audiomp3_mp3file_get_sample_rate(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(audiomp3_mp3file_get_sample_rate_obj, audiomp3_mp3file_obj_get_sample_rate);
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STATIC mp_obj_t audiomp3_mp3file_obj_set_sample_rate(mp_obj_t self_in, mp_obj_t sample_rate) {
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audiomp3_mp3file_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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common_hal_audiomp3_mp3file_set_sample_rate(self, mp_obj_get_int(sample_rate));
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(audiomp3_mp3file_set_sample_rate_obj, audiomp3_mp3file_obj_set_sample_rate);
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const mp_obj_property_t audiomp3_mp3file_sample_rate_obj = {
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.base.type = &mp_type_property,
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.proxy = {(mp_obj_t)&audiomp3_mp3file_get_sample_rate_obj,
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(mp_obj_t)&audiomp3_mp3file_set_sample_rate_obj,
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(mp_obj_t)&mp_const_none_obj},
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};
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//| bits_per_sample: Any = ...
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//| """Bits per sample. (read only)"""
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//|
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STATIC mp_obj_t audiomp3_mp3file_obj_get_bits_per_sample(mp_obj_t self_in) {
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audiomp3_mp3file_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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return MP_OBJ_NEW_SMALL_INT(common_hal_audiomp3_mp3file_get_bits_per_sample(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(audiomp3_mp3file_get_bits_per_sample_obj, audiomp3_mp3file_obj_get_bits_per_sample);
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const mp_obj_property_t audiomp3_mp3file_bits_per_sample_obj = {
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.base.type = &mp_type_property,
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.proxy = {(mp_obj_t)&audiomp3_mp3file_get_bits_per_sample_obj,
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(mp_obj_t)&mp_const_none_obj,
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(mp_obj_t)&mp_const_none_obj},
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};
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//| channel_count: Any = ...
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//| """Number of audio channels. (read only)"""
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//|
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STATIC mp_obj_t audiomp3_mp3file_obj_get_channel_count(mp_obj_t self_in) {
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audiomp3_mp3file_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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return MP_OBJ_NEW_SMALL_INT(common_hal_audiomp3_mp3file_get_channel_count(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(audiomp3_mp3file_get_channel_count_obj, audiomp3_mp3file_obj_get_channel_count);
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const mp_obj_property_t audiomp3_mp3file_channel_count_obj = {
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.base.type = &mp_type_property,
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.proxy = {(mp_obj_t)&audiomp3_mp3file_get_channel_count_obj,
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(mp_obj_t)&mp_const_none_obj,
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(mp_obj_t)&mp_const_none_obj},
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};
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//| rms_level: Any = ...
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//| """The RMS audio level of a recently played moment of audio. (read only)"""
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//|
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STATIC mp_obj_t audiomp3_mp3file_obj_get_rms_level(mp_obj_t self_in) {
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audiomp3_mp3file_obj_t *self = MP_OBJ_TO_PTR(self_in);
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check_for_deinit(self);
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return mp_obj_new_float(common_hal_audiomp3_mp3file_get_rms_level(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(audiomp3_mp3file_get_rms_level_obj, audiomp3_mp3file_obj_get_rms_level);
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const mp_obj_property_t audiomp3_mp3file_rms_level_obj = {
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.base.type = &mp_type_property,
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.proxy = {(mp_obj_t)&audiomp3_mp3file_get_rms_level_obj,
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(mp_obj_t)&mp_const_none_obj,
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(mp_obj_t)&mp_const_none_obj},
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};
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STATIC const mp_rom_map_elem_t audiomp3_mp3file_locals_dict_table[] = {
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// Methods
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{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&audiomp3_mp3file_deinit_obj) },
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{ MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&default___enter___obj) },
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{ MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&audiomp3_mp3file___exit___obj) },
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// Properties
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{ MP_ROM_QSTR(MP_QSTR_file), MP_ROM_PTR(&audiomp3_mp3file_file_obj) },
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{ MP_ROM_QSTR(MP_QSTR_sample_rate), MP_ROM_PTR(&audiomp3_mp3file_sample_rate_obj) },
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{ MP_ROM_QSTR(MP_QSTR_bits_per_sample), MP_ROM_PTR(&audiomp3_mp3file_bits_per_sample_obj) },
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{ MP_ROM_QSTR(MP_QSTR_channel_count), MP_ROM_PTR(&audiomp3_mp3file_channel_count_obj) },
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{ MP_ROM_QSTR(MP_QSTR_rms_level), MP_ROM_PTR(&audiomp3_mp3file_rms_level_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(audiomp3_mp3file_locals_dict, audiomp3_mp3file_locals_dict_table);
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STATIC const audiosample_p_t audiomp3_mp3file_proto = {
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MP_PROTO_IMPLEMENT(MP_QSTR_protocol_audiosample)
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.sample_rate = (audiosample_sample_rate_fun)common_hal_audiomp3_mp3file_get_sample_rate,
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.bits_per_sample = (audiosample_bits_per_sample_fun)common_hal_audiomp3_mp3file_get_bits_per_sample,
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.channel_count = (audiosample_channel_count_fun)common_hal_audiomp3_mp3file_get_channel_count,
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.reset_buffer = (audiosample_reset_buffer_fun)audiomp3_mp3file_reset_buffer,
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.get_buffer = (audiosample_get_buffer_fun)audiomp3_mp3file_get_buffer,
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.get_buffer_structure = (audiosample_get_buffer_structure_fun)audiomp3_mp3file_get_buffer_structure,
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};
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const mp_obj_type_t audiomp3_mp3file_type = {
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{ &mp_type_type },
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.name = MP_QSTR_MP3Decoder,
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.make_new = audiomp3_mp3file_make_new,
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.locals_dict = (mp_obj_dict_t*)&audiomp3_mp3file_locals_dict,
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.protocol = &audiomp3_mp3file_proto,
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};
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