diff --git a/src/audio.rs b/src/audio.rs
new file mode 100644
index 0000000..7cbdf72
--- /dev/null
+++ b/src/audio.rs
@@ -0,0 +1,111 @@
+use esp_idf_svc::sys::{esp_dsp, esp_nofail};
+
+use crate::config::{AUDIO_BANDS, AUDIO_BUFFERS, AUDIO_SAMPLES_PER_BUF};
+use crate::helpers::{falloff, falloff_f};
+
+pub type AudioBuffer = [i32; AUDIO_SAMPLES_PER_BUF];
+pub type DspBuffer = [f32; AUDIO_SAMPLES_PER_BUF];
+
+pub struct AudioProcessor {
+ pub floating_max: i32,
+ pub current_powers: [f32; AUDIO_BANDS],
+ pub avg_powers: [f32; AUDIO_BANDS],
+ pub fft_buffer: [DspBuffer; AUDIO_BUFFERS],
+ pub next_fft_buf: usize,
+ fft_window: DspBuffer,
+}
+
+impl AudioProcessor {
+ pub fn new() -> Self {
+ let mut buf: DspBuffer = [0f32; AUDIO_SAMPLES_PER_BUF];
+
+ unsafe {
+ esp_dsp::dsps_wind_hann_f32(buf.as_mut_ptr(), AUDIO_SAMPLES_PER_BUF as i32);
+ }
+
+ AudioProcessor {
+ floating_max: 0i32,
+ current_powers: [0f32; AUDIO_BANDS],
+ avg_powers: [0f32; AUDIO_BANDS],
+ fft_buffer: [[0f32; AUDIO_SAMPLES_PER_BUF]; AUDIO_BUFFERS],
+ next_fft_buf: 0,
+ fft_window: buf,
+ }
+ }
+
+ pub fn process(&mut self, audio: &AudioBuffer) -> usize {
+ let &(mut proc_fft_buffer) = &self.fft_buffer[self.next_fft_buf];
+
+ /* calculate floating max */
+ let mut new_max = 0i32;
+ for value in audio {
+ new_max = std::cmp::max(new_max, value.saturating_abs());
+ }
+
+ /* get maximum */
+ self.floating_max = std::cmp::max(
+ 10000000,
+ if new_max > self.floating_max {
+ new_max
+ } else {
+ falloff(self.floating_max, falloff(self.floating_max, new_max))
+ },
+ );
+
+ /* convert to floats for input to fft */
+ for it in audio.iter().zip(proc_fft_buffer.iter_mut()) {
+ let (audio_it, fft_it) = it;
+ *fft_it = (*audio_it as f32) / (i32::MAX as f32);
+ }
+
+ /* do fft */
+ let half_sample_count = (AUDIO_SAMPLES_PER_BUF / 2) as i32;
+ unsafe {
+ esp_nofail!(esp_dsp::dsps_mul_f32_ae32(
+ proc_fft_buffer.as_ptr(),
+ self.fft_window.as_ptr(),
+ proc_fft_buffer.as_mut_ptr(),
+ AUDIO_SAMPLES_PER_BUF as i32,
+ 1,
+ 1,
+ 1,
+ ));
+
+ esp_nofail!(esp_dsp::dsps_fft2r_fc32_aes3_(
+ proc_fft_buffer.as_mut_ptr(),
+ half_sample_count,
+ esp_dsp::dsps_fft_w_table_fc32,
+ )); // operating on half length but complex
+ esp_nofail!(esp_dsp::dsps_bit_rev2r_fc32(
+ proc_fft_buffer.as_mut_ptr(),
+ half_sample_count
+ )); // operating on half length but complex
+ esp_nofail!(esp_dsp::dsps_cplx2real_fc32_ae32_(
+ proc_fft_buffer.as_mut_ptr(),
+ half_sample_count,
+ esp_dsp::dsps_fft_w_table_fc32,
+ esp_dsp::dsps_fft_w_table_size,
+ )); // operating on half length but complex
+
+ for i in 0..half_sample_count as usize {
+ proc_fft_buffer[i] = (proc_fft_buffer[i * 2] * proc_fft_buffer[i * 2]
+ + proc_fft_buffer[i * 2 + 1] * proc_fft_buffer[i * 2 + 1])
+ .sqrt();
+ }
+ }
+
+ /* do band stats */
+ self.current_powers[0] = proc_fft_buffer[1..8].iter().sum::<f32>() / 8f32;
+ self.current_powers[1] = proc_fft_buffer[9..86].iter().sum::<f32>() / 78f32;
+ self.current_powers[2] = proc_fft_buffer[87..470].iter().sum::<f32>() / 384f32;
+
+ for it in self.current_powers.iter().zip(self.avg_powers.iter_mut()) {
+ let (current, avg) = it;
+ *avg = falloff_f(*avg, *current);
+ }
+
+ let last_fft_buf = self.next_fft_buf;
+ self.next_fft_buf = (self.next_fft_buf + 1) % AUDIO_BUFFERS;
+ last_fft_buf
+ }
+}
diff --git a/src/config.rs b/src/config.rs
new file mode 100644
index 0000000..5ac7b5b
--- /dev/null
+++ b/src/config.rs
@@ -0,0 +1,5 @@
+pub const LED_COUNT: usize = 72;
+
+pub const AUDIO_SAMPLES_PER_BUF: usize = 1024;
+pub const AUDIO_BUFFERS: usize = 2;
+pub const AUDIO_BANDS: usize = 3;
diff --git a/src/effects/bass_sparks.rs b/src/effects/bass_sparks.rs
new file mode 100644
index 0000000..f9b361a
--- /dev/null
+++ b/src/effects/bass_sparks.rs
@@ -0,0 +1,42 @@
+use esp_idf_svc::hal::units::{MilliSeconds,FromValueType};
+
+use crate::audio::AudioProcessor;
+use crate::effects::led_effect::{LedColors, LedEffect, Rgbv};
+use crate::helpers::random_at_most;
+use crate::LED_COUNT;
+
+pub struct LedEffectBassSparks {
+ bass_color: Rgbv,
+}
+impl LedEffectBassSparks {
+ pub fn new() -> Self {
+ Self {
+ bass_color: Rgbv::black(0),
+ }
+ }
+}
+impl LedEffect for LedEffectBassSparks {
+ fn render(&mut self, processed: &AudioProcessor, _fft_buf: usize, leds: &mut LedColors) -> MilliSeconds {
+ if processed.floating_max > 10100000
+ && (processed.current_powers[0] > 1.25 * processed.avg_powers[0])
+ {
+ self.bass_color = Rgbv::new(127, 0, 255, 4)
+ }
+
+ leds.fill(self.bass_color);
+
+ self.bass_color.decrease(3, 5, 5, 0);
+
+ if processed.floating_max > 10100000
+ && (processed.current_powers[1] > 1.35 * processed.avg_powers[1])
+ && (processed.current_powers[2] > 1.35 * processed.avg_powers[2])
+ {
+ for _ in 0..10 {
+ let led_index = random_at_most(LED_COUNT as u32 - 1) as usize;
+ leds[led_index] = Rgbv::white(31);
+ }
+ }
+
+ 10.ms()
+ }
+}
diff --git a/src/effects/led_effect.rs b/src/effects/led_effect.rs
new file mode 100644
index 0000000..837c6b1
--- /dev/null
+++ b/src/effects/led_effect.rs
@@ -0,0 +1,123 @@
+use anyhow::{bail, Result};
+use bytemuck::{Pod, Zeroable};
+use esp_idf_svc::hal::units::MilliSeconds;
+
+use crate::{config::LED_COUNT, AudioProcessor};
+
+pub trait LedEffect {
+ fn render(&mut self, processed: &AudioProcessor, fft_buf: usize, leds: &mut LedColors) -> MilliSeconds;
+}
+
+#[derive(Clone, Copy, Eq, PartialEq, Pod, Zeroable)]
+#[repr(C, align(4))]
+pub struct Rgbv {
+ _o: u8,
+ b: u8,
+ g: u8,
+ r: u8,
+}
+
+impl Rgbv {
+ const _O_ONES: u8 = 0xE0;
+
+ #[rustfmt::skip] pub const fn black(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0x00, g: 0x00, b: 0x00, _o: Self::_O_ONES | o } }
+ #[rustfmt::skip] pub const fn white(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0xFF, g: 0xFF, b: 0xFF, _o: Self::_O_ONES | o } }
+
+ #[rustfmt::skip] pub const fn red(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0xFF, g: 0x00, b: 0x00, _o: Self::_O_ONES | o } }
+ #[rustfmt::skip] pub const fn green(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0x00, g: 0xFF, b: 0x00, _o: Self::_O_ONES | o } }
+ #[rustfmt::skip] pub const fn blue(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0x00, g: 0x00, b: 0xFF, _o: Self::_O_ONES | o } }
+
+ #[rustfmt::skip] pub const fn cyan(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0x00, g: 0xFF, b: 0xFF, _o: Self::_O_ONES | o } }
+ #[rustfmt::skip] pub const fn orange(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0xFF, g: 0x80, b: 0x00, _o: Self::_O_ONES | o } }
+ #[rustfmt::skip] pub const fn yellow(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0xFF, g: 0xFF, b: 0x00, _o: Self::_O_ONES | o } }
+ #[rustfmt::skip] pub const fn pink(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0xFF, g: 0x00, b: 0xFF, _o: Self::_O_ONES | o } }
+
+ pub const MAX_O: u8 = 31;
+
+ pub fn new(r: u8, g: u8, b: u8, o: u8) -> Self {
+ assert!(o <= Self::MAX_O);
+ Self {
+ r,
+ g,
+ b,
+ _o: o | Self::_O_ONES,
+ }
+ }
+
+ pub fn o(self) -> u8 {
+ self._o & !Self::_O_ONES
+ }
+
+ #[inline(always)]
+ pub fn set_o(mut self, o: u8) -> Self {
+ assert!(o <= Self::MAX_O);
+ self._o = o | Self::_O_ONES;
+ self
+ }
+
+ #[inline(always)]
+ pub fn increase(&mut self, r: u8, g: u8, b: u8, o: u8) -> Self {
+ self.r = self.r.saturating_add(r);
+ self.g = self.g.saturating_add(g);
+ self.b = self.b.saturating_add(b);
+ self.set_o(std::cmp::min(self.o() + o, Self::MAX_O));
+ *self
+ }
+
+ #[inline(always)]
+ pub fn decrease(&mut self, r: u8, g: u8, b: u8, o: u8) -> Self {
+ self.r = self.r.saturating_sub(r);
+ self.g = self.g.saturating_sub(g);
+ self.b = self.b.saturating_sub(b);
+ self.set_o(self.o().saturating_sub(o));
+ *self
+ }
+
+ /// Converts hue, saturation, value to RGB
+ /// // copied from rmt_neopixel example
+ pub fn from_hsv(h: u32, s: u32, v: u32, o: u8) -> Result<Self> {
+ assert!(o <= Self::MAX_O);
+ if h > 360 || s > 100 || v > 100 {
+ bail!("The given HSV values are not in valid range");
+ }
+ let s = s as f64 / 100.0;
+ let v = v as f64 / 100.0;
+ let c = s * v;
+ let x = c * (1.0 - (((h as f64 / 60.0) % 2.0) - 1.0).abs());
+ let m = v - c;
+ let (r, g, b) = match h {
+ 0..=59 => (c, x, 0.0),
+ 60..=119 => (x, c, 0.0),
+ 120..=179 => (0.0, c, x),
+ 180..=239 => (0.0, x, c),
+ 240..=299 => (x, 0.0, c),
+ _ => (c, 0.0, x),
+ };
+ Ok(Self {
+ r: ((r + m) * 255.0) as u8,
+ g: ((g + m) * 255.0) as u8,
+ b: ((b + m) * 255.0) as u8,
+ _o: o | Self::_O_ONES,
+ })
+ }
+}
+
+pub type LedColors = [Rgbv; LED_COUNT];
+
+#[repr(C, align(4))]
+#[derive(Clone, Copy, Eq, PartialEq, Pod, Zeroable)]
+pub struct LedData {
+ zeros: u32,
+ pub leds: LedColors,
+ ones: u32,
+}
+
+impl LedData {
+ pub fn new() -> Self {
+ Self {
+ zeros: 0,
+ leds: [Rgbv::new(0, 0, 0, 0); LED_COUNT],
+ ones: 0, // sic. works as well, and triggers PWM change at the end of frame transfer instead of next one.
+ }
+ }
+}
diff --git a/src/effects/mod.rs b/src/effects/mod.rs
new file mode 100644
index 0000000..3faa122
--- /dev/null
+++ b/src/effects/mod.rs
@@ -0,0 +1,2 @@
+pub mod led_effect;
+pub mod bass_sparks;
\ No newline at end of file
diff --git a/src/helpers.rs b/src/helpers.rs
new file mode 100644
index 0000000..a1be934
--- /dev/null
+++ b/src/helpers.rs
@@ -0,0 +1,33 @@
+use esp_idf_svc::hal::sys::esp_random;
+
+pub fn falloff(old: i32, new: i32) -> i32 {
+ (old >> 1) + (old >> 2) + (new >> 2)
+}
+pub fn falloff_f(old: f32, new: f32) -> f32 {
+ (old / 2.0f32) + (old / 4.0f32) + (new / 4.0f32)
+}
+
+pub fn random_at_most(max: u32) -> u32 {
+ // impl from https://stackoverflow.com/a/6852396, adapted to uint32/2
+ // Assumes 0 <= max <= INT32_MAX
+ // Returns in the closed interval [0, max]
+ assert!(max < u32::MAX);
+
+ let num_bins = max + 1;
+ let num_rand = i32::MAX as u32 + 1;
+ let bin_size = num_rand / num_bins;
+ let defect = num_rand % num_bins;
+
+ let mut x: u32;
+
+ loop {
+ unsafe {
+ x = esp_random() >> 1; // This is carefully written not to overflow
+ if num_rand - defect > x {
+ break;
+ }
+ }
+ }
+ // Truncated division is intentional
+ x / bin_size
+}
diff --git a/src/main.rs b/src/main.rs
index 1105ca8..636d369 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,303 +1,27 @@
-use bytemuck::{bytes_of, bytes_of_mut, Pod, Zeroable};
+pub mod audio;
+pub mod config;
+pub mod effects;
+pub mod helpers;
+
+use audio::{AudioBuffer, AudioProcessor};
+use bytemuck::{bytes_of, bytes_of_mut};
use esp_idf_svc::{
hal::{
- delay::FreeRtos, gpio::AnyIOPin, i2s, peripherals::Peripherals, spi, units::FromValueType,
+ delay::FreeRtos,
+ gpio::AnyIOPin,
+ i2s,
+ peripherals::Peripherals,
+ spi,
+ units::{FromValueType, MilliSeconds},
},
- sys::{esp_dsp, esp_nofail, esp_random, TickType_t},
+ sys::{esp_dsp, esp_nofail, TickType_t},
};
-use anyhow::{bail, Result};
-
-const LED_COUNT: usize = 72;
-
-const AUDIO_SAMPLES_PER_BUF: usize = 1024;
-const AUDIO_BUFFERS: usize = 2;
-const AUDIO_BANDS: usize = 3;
-
-type AudioBuffer = [i32; AUDIO_SAMPLES_PER_BUF];
-type DspBuffer = [f32; AUDIO_SAMPLES_PER_BUF];
-
-#[derive(Clone, Copy, Eq, PartialEq, Pod, Zeroable)]
-#[repr(C, align(4))]
-struct Rgbv {
- r: u8,
- g: u8,
- b: u8,
- _o: u8,
-}
-
-impl Rgbv {
- const _O_ONES: u8 = 0xE0;
-
- #[rustfmt::skip] const fn black(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0x00, g: 0x00, b: 0x00, _o: Self::_O_ONES | o } }
- #[rustfmt::skip] const fn white(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0xFF, g: 0xFF, b: 0xFF, _o: Self::_O_ONES | o } }
-
- #[rustfmt::skip] const fn red(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0xFF, g: 0x00, b: 0x00, _o: Self::_O_ONES | o } }
- #[rustfmt::skip] const fn green(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0x00, g: 0xFF, b: 0x00, _o: Self::_O_ONES | o } }
- #[rustfmt::skip] const fn blue(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0x00, g: 0x00, b: 0xFF, _o: Self::_O_ONES | o } }
-
- #[rustfmt::skip] const fn cyan(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0x00, g: 0xFF, b: 0xFF, _o: Self::_O_ONES | o } }
- #[rustfmt::skip] const fn orange(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0xFF, g: 0x80, b: 0x00, _o: Self::_O_ONES | o } }
- #[rustfmt::skip] const fn yellow(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0xFF, g: 0xFF, b: 0x00, _o: Self::_O_ONES | o } }
- #[rustfmt::skip] const fn pink(o: u8) -> Self { assert!(o<=Self::MAX_O); Self {r: 0xFF, g: 0x00, b: 0xFF, _o: Self::_O_ONES | o } }
-
- const MAX_O: u8 = 31;
-
- pub fn new(r: u8, g: u8, b: u8, o: u8) -> Self {
- assert!(o <= Self::MAX_O);
- Self {
- r,
- g,
- b,
- _o: o | Self::_O_ONES,
- }
- }
-
- pub fn o(self) -> u8 {
- self._o & !Self::_O_ONES
- }
-
- #[inline(always)]
- pub fn set_o(mut self, o: u8) -> Self {
- assert!(o <= Self::MAX_O);
- self._o = o | Self::_O_ONES;
- self
- }
-
- #[inline(always)]
- pub fn increase(mut self, r: u8, g: u8, b: u8, o: u8) -> Self {
- self.r = self.r.saturating_add(r);
- self.g = self.g.saturating_add(g);
- self.b = self.b.saturating_add(b);
- self.set_o(std::cmp::min(self.o() + o, Self::MAX_O));
- self
- }
-
- #[inline(always)]
- pub fn decrease(mut self, r: u8, g: u8, b: u8, o: u8) -> Self {
- self.r = self.r.saturating_sub(r);
- self.g = self.g.saturating_sub(g);
- self.b = self.b.saturating_sub(b);
- self.set_o(self.o().saturating_sub(o));
- self
- }
-
- /// Converts hue, saturation, value to RGB
- /// // copied from rmt_neopixel example
- pub fn from_hsv(h: u32, s: u32, v: u32, o: u8) -> Result<Self> {
- assert!(o <= Self::MAX_O);
- if h > 360 || s > 100 || v > 100 {
- bail!("The given HSV values are not in valid range");
- }
- let s = s as f64 / 100.0;
- let v = v as f64 / 100.0;
- let c = s * v;
- let x = c * (1.0 - (((h as f64 / 60.0) % 2.0) - 1.0).abs());
- let m = v - c;
- let (r, g, b) = match h {
- 0..=59 => (c, x, 0.0),
- 60..=119 => (x, c, 0.0),
- 120..=179 => (0.0, c, x),
- 180..=239 => (0.0, x, c),
- 240..=299 => (x, 0.0, c),
- _ => (c, 0.0, x),
- };
- Ok(Self {
- r: ((r + m) * 255.0) as u8,
- g: ((g + m) * 255.0) as u8,
- b: ((b + m) * 255.0) as u8,
- _o: o | Self::_O_ONES,
- })
- }
-}
-
-type LedColors = [Rgbv; LED_COUNT];
-
-#[repr(C, align(4))]
-#[derive(Clone, Copy, Eq, PartialEq, Pod, Zeroable)]
-struct LedData {
- zeros: u32,
- leds: LedColors,
- ones: u32,
-}
-
-impl LedData {
- pub fn new() -> Self {
- Self {
- zeros: 0,
- leds: [Rgbv::new(0, 0, 0, 0); LED_COUNT],
- ones: 0, // sic. works as well, and triggers PWM change at the end of frame transfer instead of next one.
- }
- }
-}
-
-fn falloff(old: i32, new: i32) -> i32 {
- (old >> 1) + (old >> 2) + (new >> 2)
-}
-fn falloff_f(old: f32, new: f32) -> f32 {
- (old / 2.0f32) + (old / 4.0f32) + (new / 4.0f32)
-}
-
-fn random_at_most(max: u32) -> u32 {
- // impl from https://stackoverflow.com/a/6852396, adapted to uint32/2
- // Assumes 0 <= max <= INT32_MAX
- // Returns in the closed interval [0, max]
- assert!(max < u32::MAX);
-
- let num_bins = max + 1;
- let num_rand = i32::MAX as u32 + 1;
- let bin_size = num_rand / num_bins;
- let defect = num_rand % num_bins;
-
- let mut x: u32;
-
- loop {
- unsafe {
- x = esp_random() >> 1; // This is carefully written not to overflow
- if num_rand - defect > x {
- break;
- }
- }
- }
- // Truncated division is intentional
- x / bin_size
-}
-
-struct AudioProcessor {
- floating_max: i32,
- current_powers: [f32; AUDIO_BANDS],
- avg_powers: [f32; AUDIO_BANDS],
- fft_buffer: [DspBuffer; AUDIO_BUFFERS],
- next_fft_buf: usize,
- fft_window: DspBuffer,
-}
-
-impl AudioProcessor {
- pub fn new() -> Self {
- let mut buf: DspBuffer = [0f32; AUDIO_SAMPLES_PER_BUF];
-
- unsafe {
- esp_dsp::dsps_wind_hann_f32(buf.as_mut_ptr(), AUDIO_SAMPLES_PER_BUF as i32);
- }
-
- AudioProcessor {
- floating_max: 0i32,
- current_powers: [0f32; AUDIO_BANDS],
- avg_powers: [0f32; AUDIO_BANDS],
- fft_buffer: [[0f32; AUDIO_SAMPLES_PER_BUF]; AUDIO_BUFFERS],
- next_fft_buf: 0,
- fft_window: buf,
- }
- }
-
- pub fn process(&mut self, audio: &AudioBuffer) -> usize {
- let &(mut proc_fft_buffer) = &self.fft_buffer[self.next_fft_buf];
-
- /* calculate floating max */
- let mut new_max = 0i32;
- for value in audio {
- new_max = std::cmp::max(new_max, value.saturating_abs());
- }
-
- /* get maximum */
- self.floating_max = std::cmp::max(
- 10000000,
- if new_max > self.floating_max {
- new_max
- } else {
- falloff(self.floating_max, falloff(self.floating_max, new_max))
- },
- );
-
- /* convert to floats for input to fft */
- for it in audio.iter().zip(proc_fft_buffer.iter_mut()) {
- let (audio_it, fft_it) = it;
- *fft_it = (*audio_it as f32) / (i32::MAX as f32);
- }
-
- /* do fft */
- let half_sample_count = (AUDIO_SAMPLES_PER_BUF / 2) as i32;
- unsafe {
- esp_nofail!(esp_dsp::dsps_mul_f32_ae32(
- proc_fft_buffer.as_ptr(),
- self.fft_window.as_ptr(),
- proc_fft_buffer.as_mut_ptr(),
- AUDIO_SAMPLES_PER_BUF as i32,
- 1,
- 1,
- 1,
- ));
-
- esp_nofail!(esp_dsp::dsps_fft2r_fc32_aes3_(
- proc_fft_buffer.as_mut_ptr(),
- half_sample_count,
- esp_dsp::dsps_fft_w_table_fc32,
- )); // operating on half length but complex
- esp_nofail!(esp_dsp::dsps_bit_rev2r_fc32(
- proc_fft_buffer.as_mut_ptr(),
- half_sample_count
- )); // operating on half length but complex
- esp_nofail!(esp_dsp::dsps_cplx2real_fc32_ae32_(
- proc_fft_buffer.as_mut_ptr(),
- half_sample_count,
- esp_dsp::dsps_fft_w_table_fc32,
- esp_dsp::dsps_fft_w_table_size,
- )); // operating on half length but complex
-
- for i in 0..half_sample_count as usize {
- proc_fft_buffer[i] = (proc_fft_buffer[i * 2] * proc_fft_buffer[i * 2]
- + proc_fft_buffer[i * 2 + 1] * proc_fft_buffer[i * 2 + 1])
- .sqrt();
- }
- }
-
- /* do band stats */
- self.current_powers[0] = proc_fft_buffer[1..8].iter().sum::<f32>() / 8f32;
- self.current_powers[1] = proc_fft_buffer[9..86].iter().sum::<f32>() / 78f32;
- self.current_powers[2] = proc_fft_buffer[87..470].iter().sum::<f32>() / 384f32;
-
- for it in self.current_powers.iter().zip(self.avg_powers.iter_mut()) {
- let (current, avg) = it;
- *avg = falloff_f(*avg, *current);
- }
-
- let last_fft_buf = self.next_fft_buf;
- self.next_fft_buf = (self.next_fft_buf + 1) % AUDIO_BUFFERS;
- last_fft_buf
- }
-}
-
-trait LedEffect {
- fn render(&mut self, processed: &AudioProcessor, fft_buf: usize, leds: &LedColors);
-}
-
-struct LedEffectBassSparks {}
-impl LedEffect for LedEffectBassSparks {
- fn render(&mut self, processed: &AudioProcessor, _fft_buf: usize, &(mut leds): &LedColors) {
- let bass_color = if processed.floating_max > 10100000
- && (processed.current_powers[0] > 1.25 * processed.avg_powers[0])
- {
- Rgbv::new(127, 0, 255, 4)
- } else {
- Rgbv::new(0, 0, 0, 0)
- };
-
- leds.fill(bass_color);
-
- bass_color.decrease(3, 5, 5, 0);
-
- if true
- /*processed.floating_max > 10100000
- && (processed.current_powers[1] > 1.35 * processed.avg_powers[1])
- && (processed.current_powers[2] > 1.35 * processed.avg_powers[2])*/
- {
- for _ in 0..10 {
- let led_index = random_at_most(LED_COUNT as u32 - 1) as usize;
- leds[led_index] = Rgbv::white(31);
- }
- }
- }
-}
+use config::{AUDIO_BUFFERS, AUDIO_SAMPLES_PER_BUF, LED_COUNT};
+use effects::{
+ bass_sparks::LedEffectBassSparks,
+ led_effect::{LedData, LedEffect},
+};
fn main() -> anyhow::Result<()> {
// It is necessary to call this function once. Otherwise some patches to the runtime
@@ -316,19 +40,13 @@ fn main() -> anyhow::Result<()> {
let mut audio: [AudioBuffer; AUDIO_BUFFERS] = [[0; AUDIO_SAMPLES_PER_BUF]; AUDIO_BUFFERS];
let mut next_audio_buf: usize = 0;
- // interfaces
- let led_spi_per = peripherals.spi2;
+
+ // i2s config
let mic_i2s_per = peripherals.i2s0;
-
- // pins
- let led_spi_sdo = peripherals.pins.gpio11;
- let led_spi_sck = peripherals.pins.gpio12;
-
let mic_i2s_sd = peripherals.pins.gpio5;
let mic_i2s_sclk = peripherals.pins.gpio4;
let mic_i2s_ws = peripherals.pins.gpio6;
- // i2s config
let mic_i2s_std_cfg = i2s::config::StdConfig::new(
i2s::config::Config::new().role(i2s::config::Role::Controller),
i2s::config::StdClkConfig::new(
@@ -342,7 +60,10 @@ fn main() -> anyhow::Result<()> {
)
.data_bit_width(i2s::config::DataBitWidth::Bits32)
.slot_bit_width(i2s::config::SlotBitWidth::Bits32)
- .slot_mode_mask(i2s::config::SlotMode::Stereo, i2s::config::StdSlotMask::Both)
+ .slot_mode_mask(
+ i2s::config::SlotMode::Stereo,
+ i2s::config::StdSlotMask::Both,
+ )
.ws_width(32)
.ws_polarity(false)
.bit_shift(true)
@@ -361,6 +82,10 @@ fn main() -> anyhow::Result<()> {
)?;
// spi config
+ let led_spi_per = peripherals.spi2;
+ let led_spi_sdo = peripherals.pins.gpio11;
+ let led_spi_sck = peripherals.pins.gpio12;
+
let mut led_drv = spi::SpiDeviceDriver::new_single(
led_spi_per,
led_spi_sck,
@@ -385,43 +110,27 @@ fn main() -> anyhow::Result<()> {
}
let mut processor = AudioProcessor::new();
- let mut effect = LedEffectBassSparks {};
-
- // loop {
- // leds.leds[0] = Rgbv::red(4);
- // let output_buffer = bytes_of(&leds);
- // led_drv.write(output_buffer)?;
-
- // FreeRtos::delay_ms(10);
- // }
+ let mut effect = LedEffectBassSparks::new();
mic_drv.rx_enable()?;
+
loop {
- // let buffer: &mut [u8; AUDIO_SAMPLES_PER_BUF*4] = cast_slice_mut(&mut audio[next_audio_buf]);
let buffer = bytes_of_mut(&mut audio[next_audio_buf]);
- // let mut buffer:[u8;AUDIO_SAMPLES_PER_BUF*4] = [0;AUDIO_SAMPLES_PER_BUF*4];
- let num_bytes_read = mic_drv.read(buffer.as_mut_slice(), TickType_t::MAX)?;
+ let num_bytes_read = mic_drv.read(buffer, TickType_t::MAX)?;
if num_bytes_read != AUDIO_SAMPLES_PER_BUF * 4 {
log::error!("buffer underflow");
}
- // for i in 0..AUDIO_SAMPLES_PER_BUF {
- // let sample:&[u8;4] = &buffer[i*4..i*4+4].try_into().expect("bla");
- // audio[next_audio_buf][i] = i32::from_le_bytes(*sample);
- // }
-
- // log::info!("a: {:08x}", audio[next_audio_buf][0]);
-
let current_fft_buf = processor.process(&audio[next_audio_buf]);
- effect.render(&processor, current_fft_buf, &(leds.leds));
+ let delay_ms: MilliSeconds = effect.render(&processor, current_fft_buf, &mut leds.leds);
let output_buffer = bytes_of(&leds);
led_drv.write(output_buffer)?;
next_audio_buf = (next_audio_buf + 1) % AUDIO_BUFFERS;
- FreeRtos::delay_ms(10);
+ FreeRtos::delay_ms(delay_ms.into());
}
}