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optimze uninterleave function

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KubaPro010
2025-03-27 21:39:14 +01:00
parent 7b78cf6264
commit c26412856b
1 changed files with 16 additions and 0 deletions
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16
src/fm95.c
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@@ -47,10 +47,26 @@
static volatile sig_atomic_t to_run = 1;
void uninterleave(const float *input, float *left, float *right, size_t num_samples) {
#if USE_NEON
size_t i = 0;
size_t vec_size = num_samples / 2;
for (; i + 4 <= vec_size; i += 4) {
float32x4x2_t interleaved = vld2q_f32(&input[i * 2]);
vst1q_f32(&left[i], interleaved.val[0]);
vst1q_f32(&right[i], interleaved.val[1]);
}
for (; i < vec_size; i++) {
left[i] = input[i * 2];
right[i] = input[i * 2 + 1];
}
#else
for (size_t i = 0; i < num_samples/2; i++) {
left[i] = input[i * 2];
right[i] = input[i * 2 + 1];
}
#endif
}
static void stop(int signum) {