radio95/fm95
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This commit is contained in:
kuba
2025-03-27 21:40:04 +01:00
parent c26412856b
commit 49a4b92873
1 changed files with 11 additions and 8 deletions
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src/fm95.c
+11 -8
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@@ -49,17 +49,20 @@ static volatile sig_atomic_t to_run = 1;
void uninterleave(const float *input, float *left, float *right, size_t num_samples) { void uninterleave(const float *input, float *left, float *right, size_t num_samples) {
#if USE_NEON #if USE_NEON
size_t i = 0; size_t i = 0;
size_t vec_size = num_samples / 2;
for (; i + 4 <= vec_size; i += 4) { for (; i + 7 < num_samples; i += 8) {
float32x4x2_t interleaved = vld2q_f32(&input[i * 2]); float32x4x2_t interleaved1 = vld2q_f32(&input[i * 2]);
vst1q_f32(&left[i], interleaved.val[0]); float32x4x2_t interleaved2 = vld2q_f32(&input[i * 2 + 8]);
vst1q_f32(&right[i], interleaved.val[1]);
vst1q_f32(&left[i], interleaved1.val[0]);
vst1q_f32(&right[i], interleaved1.val[1]);
vst1q_f32(&left[i + 4], interleaved2.val[0]);
vst1q_f32(&right[i + 4], interleaved2.val[1]);
} }
for (; i < vec_size; i++) { for (; i < num_samples; i += 2) {
left[i] = input[i * 2]; left[i / 2] = input[i];
right[i] = input[i * 2 + 1]; right[i / 2] = input[i + 1];
} }
#else #else
for (size_t i = 0; i < num_samples/2; i++) { for (size_t i = 0; i < num_samples/2; i++) {