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add GranularPitchShift class #11121

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Merged
dhalbert merged 10 commits into from
Jul 16, 2026
Merged

add GranularPitchShift class #11121

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04a0950
GranularPitchShift initial code
FoamyGuy Jul 9, 2026
2926878
Merge branch 'main' into granular_pitch_shift
FoamyGuy Jul 13, 2026
8bdc18d
Merge branch 'main' into granular_pitch_shift
FoamyGuy Jul 13, 2026
a669295
add spread functionality, fix defns
FoamyGuy Jul 14, 2026
ed1f0bf
Merge branch 'main' into granular_pitch_shift
FoamyGuy Jul 14, 2026
23dd83d
translations and format
FoamyGuy Jul 14, 2026
4b14747
cleanup comments, improve example code, improve var names
FoamyGuy Jul 14, 2026
bf45453
add module to coverage unix port list
FoamyGuy Jul 14, 2026
ddff85f
disable bitmaptools on archi
FoamyGuy Jul 15, 2026
8c8f281
02 optimization flag for archi
FoamyGuy Jul 15, 2026
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1 change: 1 addition & 0 deletions locale/circuitpython.pot
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Original file line number Diff line number Diff line change
Expand Up @@ -3724,6 +3724,7 @@ msgid "file must be a file opened in byte mode"
msgstr ""

#: shared-bindings/audiodelays/Chorus.c shared-bindings/audiodelays/Echo.c
#: shared-bindings/audiodelays/GranularPitchShift.c
#: shared-bindings/audiodelays/MultiTapDelay.c
#: shared-bindings/audiodelays/PitchShift.c
#: shared-bindings/audiofilters/Distortion.c
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2 changes: 2 additions & 0 deletions ports/raspberrypi/boards/archi/mpconfigboard.mk
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Original file line number Diff line number Diff line change
Expand Up @@ -20,3 +20,5 @@ FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_Register
FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_seesaw
FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_framebuf
FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_SimpleIO

OPTIMIZATION_FLAGS = -O2
2 changes: 2 additions & 0 deletions ports/unix/variants/coverage/mpconfigvariant.mk
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Expand Up @@ -37,6 +37,7 @@ SRC_BITMAP := \
shared-bindings/audiodelays/Echo.c \
shared-bindings/audiodelays/Chorus.c \
shared-bindings/audiodelays/PitchShift.c \
shared-bindings/audiodelays/GranularPitchShift.c \
shared-bindings/audiodelays/MultiTapDelay.c \
shared-bindings/audiodelays/__init__.c \
shared-bindings/audiofilters/Distortion.c \
Expand Down Expand Up @@ -85,6 +86,7 @@ SRC_BITMAP := \
shared-module/audiodelays/Echo.c \
shared-module/audiodelays/Chorus.c \
shared-module/audiodelays/PitchShift.c \
shared-module/audiodelays/GranularPitchShift.c \
shared-module/audiodelays/MultiTapDelay.c \
shared-module/audiodelays/__init__.c \
shared-module/audiofilters/Distortion.c \
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1 change: 1 addition & 0 deletions py/circuitpy_defns.mk
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Original file line number Diff line number Diff line change
Expand Up @@ -713,6 +713,7 @@ SRC_SHARED_MODULE_ALL = \
audiodelays/Echo.c \
audiodelays/Chorus.c \
audiodelays/PitchShift.c \
audiodelays/GranularPitchShift.c \
audiodelays/MultiTapDelay.c \
audiodelays/__init__.c \
audiofilters/Distortion.c \
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315 changes: 315 additions & 0 deletions shared-bindings/audiodelays/GranularPitchShift.c
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31 changes: 31 additions & 0 deletions shared-bindings/audiodelays/GranularPitchShift.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,31 @@
// This file is part of the CircuitPython project: https://circuitpython.org
//
// SPDX-FileCopyrightText: Copyright (c) 2026 Tim Cocks for Adafruit Industries
//
// SPDX-License-Identifier: MIT

#pragma once

#include "shared-module/audiodelays/GranularPitchShift.h"

extern const mp_obj_type_t audiodelays_granular_pitch_shift_type;

void common_hal_audiodelays_granular_pitch_shift_construct(audiodelays_granular_pitch_shift_obj_t *self,
mp_obj_t semitones, mp_obj_t mix, uint32_t grain_size, uint32_t density,
mp_float_t spread, uint32_t buffer_size, uint8_t bits_per_sample, bool samples_signed,
uint8_t channel_count, uint32_t sample_rate);

void common_hal_audiodelays_granular_pitch_shift_deinit(audiodelays_granular_pitch_shift_obj_t *self);

mp_obj_t common_hal_audiodelays_granular_pitch_shift_get_semitones(audiodelays_granular_pitch_shift_obj_t *self);
void common_hal_audiodelays_granular_pitch_shift_set_semitones(audiodelays_granular_pitch_shift_obj_t *self, mp_obj_t semitones);

mp_obj_t common_hal_audiodelays_granular_pitch_shift_get_mix(audiodelays_granular_pitch_shift_obj_t *self);
void common_hal_audiodelays_granular_pitch_shift_set_mix(audiodelays_granular_pitch_shift_obj_t *self, mp_obj_t arg);

mp_float_t common_hal_audiodelays_granular_pitch_shift_get_spread(audiodelays_granular_pitch_shift_obj_t *self);
void common_hal_audiodelays_granular_pitch_shift_set_spread(audiodelays_granular_pitch_shift_obj_t *self, mp_float_t spread);

bool common_hal_audiodelays_granular_pitch_shift_get_playing(audiodelays_granular_pitch_shift_obj_t *self);
void common_hal_audiodelays_granular_pitch_shift_play(audiodelays_granular_pitch_shift_obj_t *self, mp_obj_t sample, bool loop);
void common_hal_audiodelays_granular_pitch_shift_stop(audiodelays_granular_pitch_shift_obj_t *self);
2 changes: 2 additions & 0 deletions shared-bindings/audiodelays/__init__.c
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Expand Up @@ -13,6 +13,7 @@
#include "shared-bindings/audiodelays/Echo.h"
#include "shared-bindings/audiodelays/Chorus.h"
#include "shared-bindings/audiodelays/PitchShift.h"
#include "shared-bindings/audiodelays/GranularPitchShift.h"
#include "shared-bindings/audiodelays/MultiTapDelay.h"

//| """Support for audio delay effects
Expand All @@ -26,6 +27,7 @@ static const mp_rom_map_elem_t audiodelays_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR_Echo), MP_ROM_PTR(&audiodelays_echo_type) },
{ MP_ROM_QSTR(MP_QSTR_Chorus), MP_ROM_PTR(&audiodelays_chorus_type) },
{ MP_ROM_QSTR(MP_QSTR_PitchShift), MP_ROM_PTR(&audiodelays_pitch_shift_type) },
{ MP_ROM_QSTR(MP_QSTR_GranularPitchShift), MP_ROM_PTR(&audiodelays_granular_pitch_shift_type) },
{ MP_ROM_QSTR(MP_QSTR_MultiTapDelay), MP_ROM_PTR(&audiodelays_multi_tap_delay_type) },
};

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