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FoamyGuyFoamyGuy
authored
Merge pull request adafruit#9793 from jepler/audiofilters-unixport
Add audiodelays & audioeffects to unix coverage port
2 parents 0013e1c + f8afdcb commit d7a7221

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6 files changed

+1603
-13
lines changed

6 files changed

+1603
-13
lines changed

‎ports/unix/variants/coverage/mpconfigvariant.mk

+11
Original file line numberDiff line numberDiff line change
@@ -33,6 +33,10 @@ SRC_BITMAP := \
3333
shared-bindings/audiocore/__init__.c \
3434
shared-bindings/audiocore/RawSample.c \
3535
shared-bindings/audiocore/WaveFile.c \
36+
shared-bindings/audiodelays/Echo.c \
37+
shared-bindings/audiodelays/__init__.c \
38+
shared-bindings/audiofilters/Filter.c \
39+
shared-bindings/audiofilters/__init__.c \
3640
shared-bindings/audiomixer/__init__.c \
3741
shared-bindings/audiomixer/Mixer.c \
3842
shared-bindings/audiomixer/MixerVoice.c \
@@ -70,6 +74,10 @@ SRC_BITMAP := \
7074
shared-module/audiocore/__init__.c \
7175
shared-module/audiocore/RawSample.c \
7276
shared-module/audiocore/WaveFile.c \
77+
shared-module/audiodelays/Echo.c \
78+
shared-module/audiodelays/__init__.c \
79+
shared-module/audiofilters/Filter.c \
80+
shared-module/audiofilters/__init__.c \
7381
shared-module/audiomixer/__init__.c \
7482
shared-module/audiomp3/MP3Decoder.c \
7583
shared-module/audiomixer/Mixer.c \
@@ -127,6 +135,9 @@ $(BUILD)/lib/mp3/src/buffers.o: CFLAGS += -include "shared-module/audiomp3/__ini
127135
CFLAGS += \
128136
-DCIRCUITPY_AESIO=1 \
129137
-DCIRCUITPY_AUDIOCORE=1 \
138+
-DCIRCUITPY_AUDIOEFFECTS=1 \
139+
-DCIRCUITPY_AUDIODELAYS=1 \
140+
-DCIRCUITPY_AUDIOFILTERS=1 \
130141
-DCIRCUITPY_AUDIOMIXER=1 \
131142
-DCIRCUITPY_AUDIOMP3=1 \
132143
-DCIRCUITPY_AUDIOMP3_USE_PORT_ALLOCATOR=0 \

‎shared-module/audiodelays/Echo.c

+11-11
Original file line numberDiff line numberDiff line change
@@ -77,7 +77,7 @@ void common_hal_audiodelays_echo_construct(audiodelays_echo_obj_t *self, uint32_
7777

7878
// Allocate the echo buffer for the max possible delay, echo is always 16-bit
7979
self->max_delay_ms = max_delay_ms;
80-
self->max_echo_buffer_len = self->sample_rate / 1000.0f * max_delay_ms * (self->channel_count * sizeof(uint16_t)); // bytes
80+
self->max_echo_buffer_len = (uint32_t)(self->sample_rate / 1000.0f * max_delay_ms) * (self->channel_count * sizeof(uint16_t)); // bytes
8181
self->echo_buffer = m_malloc(self->max_echo_buffer_len);
8282
if (self->echo_buffer == NULL) {
8383
common_hal_audiodelays_echo_deinit(self);
@@ -129,11 +129,11 @@ void common_hal_audiodelays_echo_set_delay_ms(audiodelays_echo_obj_t *self, mp_o
129129
void recalculate_delay(audiodelays_echo_obj_t *self, mp_float_t f_delay_ms) {
130130
if (self->freq_shift) {
131131
// Calculate the rate of iteration over the echo buffer with 8 sub-bits
132-
self->echo_buffer_rate = MAX(self->max_delay_ms / f_delay_ms * 256.0f, 1.0);
132+
self->echo_buffer_rate = (uint32_t)MAX(self->max_delay_ms / f_delay_ms * MICROPY_FLOAT_CONST(256.0), MICROPY_FLOAT_CONST(1.0));
133133
self->echo_buffer_len = self->max_echo_buffer_len;
134134
} else {
135135
// Calculate the current echo buffer length in bytes
136-
uint32_t new_echo_buffer_len = self->sample_rate / 1000.0f * f_delay_ms * (self->channel_count * sizeof(uint16_t));
136+
uint32_t new_echo_buffer_len = (uint32_t)(self->sample_rate / MICROPY_FLOAT_CONST(1000.0) * f_delay_ms) * (self->channel_count * sizeof(uint16_t));
137137

138138
// Check if our new echo is too long for our maximum buffer
139139
if (new_echo_buffer_len > self->max_echo_buffer_len) {
@@ -153,7 +153,7 @@ void recalculate_delay(audiodelays_echo_obj_t *self, mp_float_t f_delay_ms) {
153153
memset(self->echo_buffer + self->echo_buffer_len, 0, self->max_echo_buffer_len - self->echo_buffer_len);
154154
}
155155

156-
self->current_delay_ms = f_delay_ms;
156+
self->current_delay_ms = (uint32_t)f_delay_ms;
157157
}
158158

159159
mp_obj_t common_hal_audiodelays_echo_get_decay(audiodelays_echo_obj_t *self) {
@@ -360,17 +360,17 @@ audioio_get_buffer_result_t audiodelays_echo_get_buffer(audiodelays_echo_obj_t *
360360
echo = echo_buffer[echo_buffer_pos >> 8];
361361
next_buffer_pos = echo_buffer_pos + self->echo_buffer_rate;
362362

363-
word = echo * decay;
363+
word = (int16_t)(echo * decay);
364364
for (uint32_t j = echo_buffer_pos >> 8; j < next_buffer_pos >> 8; j++) {
365365
echo_buffer[j % echo_buf_len] = word;
366366
}
367367
} else {
368368
echo = echo_buffer[self->echo_buffer_read_pos++];
369-
word = echo * decay;
369+
word = (int16_t)(echo * decay);
370370
echo_buffer[self->echo_buffer_write_pos++] = word;
371371
}
372372

373-
word = echo * mix;
373+
word = (int16_t)(echo * mix);
374374

375375
if (MP_LIKELY(self->bits_per_sample == 16)) {
376376
word_buffer[i] = word;
@@ -433,10 +433,10 @@ audioio_get_buffer_result_t audiodelays_echo_get_buffer(audiodelays_echo_obj_t *
433433
if (self->freq_shift) {
434434
echo = echo_buffer[echo_buffer_pos >> 8];
435435
next_buffer_pos = echo_buffer_pos + self->echo_buffer_rate;
436-
word = echo * decay + sample_word;
436+
word = (int32_t)(echo * decay + sample_word);
437437
} else {
438438
echo = echo_buffer[self->echo_buffer_read_pos++];
439-
word = echo * decay + sample_word;
439+
word = (int32_t)(echo * decay + sample_word);
440440
}
441441

442442
if (MP_LIKELY(self->bits_per_sample == 16)) {
@@ -467,12 +467,12 @@ audioio_get_buffer_result_t audiodelays_echo_get_buffer(audiodelays_echo_obj_t *
467467
word = echo + sample_word;
468468

469469
if (MP_LIKELY(self->bits_per_sample == 16)) {
470-
word_buffer[i] = (sample_word * (1.0 - mix)) + (word * mix);
470+
word_buffer[i] = (int16_t)((sample_word * (1.0 - mix)) + (word * mix));
471471
if (!self->samples_signed) {
472472
word_buffer[i] ^= 0x8000;
473473
}
474474
} else {
475-
int8_t mixed = (sample_word * (1.0 - mix)) + (word * mix);
475+
int8_t mixed = (int16_t)((sample_word * (1.0 - mix)) + (word * mix));
476476
if (self->samples_signed) {
477477
hword_buffer[i] = mixed;
478478
} else {

‎shared-module/audiofilters/Filter.c

+3-2
Original file line numberDiff line numberDiff line change
@@ -204,6 +204,7 @@ int16_t mix_down_sample(int32_t sample) {
204204

205205
audioio_get_buffer_result_t audiofilters_filter_get_buffer(audiofilters_filter_obj_t *self, bool single_channel_output, uint8_t channel,
206206
uint8_t **buffer, uint32_t *buffer_length) {
207+
(void)channel;
207208

208209
if (!single_channel_output) {
209210
channel = 0;
@@ -297,15 +298,15 @@ audioio_get_buffer_result_t audiofilters_filter_get_buffer(audiofilters_filter_o
297298
// Mix processed signal with original sample and transfer to output buffer
298299
for (uint32_t j = 0; j < n_samples; j++) {
299300
if (MP_LIKELY(self->bits_per_sample == 16)) {
300-
word_buffer[i + j] = mix_down_sample((sample_src[i + j] * (1.0 - mix)) + (self->filter_buffer[j] * mix));
301+
word_buffer[i + j] = mix_down_sample((int32_t)((sample_src[i + j] * (MICROPY_FLOAT_CONST(1.0) - mix)) + (self->filter_buffer[j] * mix)));
301302
if (!self->samples_signed) {
302303
word_buffer[i + j] ^= 0x8000;
303304
}
304305
} else {
305306
if (self->samples_signed) {
306307
hword_buffer[i + j] = (int8_t)((sample_hsrc[i + j] * (1.0 - mix)) + (self->filter_buffer[j] * mix));
307308
} else {
308-
hword_buffer[i + j] = (uint8_t)(((int8_t)(((uint8_t)sample_hsrc[i + j]) ^ 0x80) * (1.0 - mix)) + (self->filter_buffer[j] * mix)) ^ 0x80;
309+
hword_buffer[i + j] = (uint8_t)(((int8_t)(((uint8_t)sample_hsrc[i + j]) ^ 0x80) * (MICROPY_FLOAT_CONST(1.0) - mix)) + (self->filter_buffer[j] * mix)) ^ 0x80;
309310
}
310311
}
311312
}

‎tests/circuitpython/audiofilter_filter.py

+16
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,16 @@
1+
from audiofilters import Filter
2+
from audiofilterhelper import synth_test, sine8k
3+
4+
@synth_test
5+
def basic_filter():
6+
effect = Filter(
7+
bits_per_sample=16,
8+
samples_signed=True,
9+
)
10+
yield effect, []
11+
12+
effect.play(sine8k, loop=True)
13+
yield 4
14+
15+
effect.stop()
16+
yield 2

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