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From 2de7e128fbdf528716b500cf27ed9a4358c931c9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@gmail.com>
Date: Fri, 24 Nov 2017 00:05:35 +0100
Subject: [PATCH 2/2] Use ARM-NEON accelaration for float-multithreaded setups
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Upstream-Status: Pending
Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>
---
src/rvoice/fluid_rvoice_mixer.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/src/rvoice/fluid_rvoice_mixer.c b/src/rvoice/fluid_rvoice_mixer.c
index 9616518..dbf8057 100644
--- a/src/rvoice/fluid_rvoice_mixer.c
+++ b/src/rvoice/fluid_rvoice_mixer.c
@@ -27,6 +27,10 @@
#include "fluid_ladspa.h"
#include "fluid_synth.h"
+#if defined(__ARM_NEON__)
+#include "arm_neon.h"
+#endif
+
#define ENABLE_MIXER_THREADS 1
@@ -794,20 +798,42 @@ fluid_mixer_buffers_mix(fluid_mixer_buffers_t* dest, fluid_mixer_buffers_t* src)
if (minbuf > src->buf_count)
minbuf = src->buf_count;
for (i=0; i < minbuf; i++) {
+#if defined(__ARM_NEON__) && defined(WITH_FLOAT)
+ for (j=0; j < scount; j+=4) {
+ float32x4_t vleft = vld1q_f32(&dest->left_buf[i][j]);
+ float32x4_t vright = vld1q_f32(&dest->right_buf[i][j]);
+ vleft = vaddq_f32(vleft, vld1q_f32(&src->left_buf[i][j]));
+ vright = vaddq_f32(vright, vld1q_f32(&src->right_buf[i][j]));
+ vst1q_f32(&dest->left_buf[i][j], vleft);
+ vst1q_f32(&dest->right_buf[i][j], vright);
+ }
+#else
for (j=0; j < scount; j++) {
dest->left_buf[i][j] += src->left_buf[i][j];
dest->right_buf[i][j] += src->right_buf[i][j];
}
+#endif
}
minbuf = dest->fx_buf_count;
if (minbuf > src->fx_buf_count)
minbuf = src->fx_buf_count;
for (i=0; i < minbuf; i++) {
+#if defined(__ARM_NEON__) && defined(WITH_FLOAT)
+ for (j=0; j < scount; j+=4) {
+ float32x4_t vleft = vld1q_f32(&dest->fx_left_buf[i][j]);
+ float32x4_t vright = vld1q_f32(&dest->fx_right_buf[i][j]);
+ vleft = vaddq_f32(vleft, vld1q_f32(&src->fx_left_buf[i][j]));
+ vright = vaddq_f32(vright, vld1q_f32(&src->fx_right_buf[i][j]));
+ vst1q_f32(&dest->fx_left_buf[i][j], vleft);
+ vst1q_f32(&dest->fx_right_buf[i][j], vright);
+ }
+#else
for (j=0; j < scount; j++) {
dest->fx_left_buf[i][j] += src->fx_left_buf[i][j];
dest->fx_right_buf[i][j] += src->fx_right_buf[i][j];
}
+#endif
}
}
--
2.9.5
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