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Process sidechain inputs in STFT helper

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This commit is contained in:
Robbert van der Helm 2022-03-06 15:36:50 +01:00
parent 2343485c1c
commit 8e2fd66573
1 changed files with 18 additions and 8 deletions
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26
src/util/stft.rs
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@ -206,9 +206,23 @@ impl<const NUM_SIDECHAIN_INPUTS: usize> StftHelper<NUM_SIDECHAIN_INPUTS> {
// Because we're processing in smaller windows, the input ring buffers sadly does
// not always contain the full contiguous range we're interested in because they map
// wrap around. Because premade FFT algorithms typically can't handle this, we'll
// start with copying
// TODO: Sdiechain
// start with copying the wrapped ranges from our ring buffers to the scratch
// buffer. Then we apply the windowing function and this it along to
for (sidechain_idx, sidechain_ring_buffers) in
self.sidechain_ring_buffers.iter().enumerate()
{
for (channel_idx, sidechain_ring_buffer) in
sidechain_ring_buffers.iter().enumerate()
{
copy_ring_to_scratch_buffer(
&mut self.scratch_buffer,
self.current_pos,
sidechain_ring_buffer,
);
multiply_scratch_buffer(&mut self.scratch_buffer, window_function);
process_cb(channel_idx, Some(sidechain_idx), &mut self.scratch_buffer);
}
}
for (channel_idx, (input_ring_buffer, output_ring_buffer)) in self
.main_input_ring_buffers
@ -267,11 +281,7 @@ fn multiply_scratch_buffer(scratch_buffer: &mut [f32], window_function: &[f32])
/// Add data from the scratch buffer to the specified ring buffer. When writing samples from this
/// ring buffer back to the host's outputs they must be cleared to prevent infinite feedback.
#[inline]
fn add_scratch_to_ring_buffer(
scratch_buffer: &[f32],
current_pos: usize,
ring_buffer: &mut [f32],
) {
fn add_scratch_to_ring_buffer(scratch_buffer: &[f32], current_pos: usize, ring_buffer: &mut [f32]) {
// TODO: This could also use some SIMD
let block_size = scratch_buffer.len();
let num_copy_before_wrap = block_size - current_pos;