From 216a6667fe3174943efadb137a70113075fbe399 Mon Sep 17 00:00:00 2001
From: patrick-radius <p.radius@true.nl>
Date: Sat, 31 Dec 2016 13:04:38 +0100
Subject: [PATCH] Added float audio multiply

---
 AudioMultiply_F32.cpp | 20 ++++++++++++++++++++
 AudioMultiply_F32.h   | 12 ++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 AudioMultiply_F32.cpp
 create mode 100644 AudioMultiply_F32.h

diff --git a/AudioMultiply_F32.cpp b/AudioMultiply_F32.cpp
new file mode 100644
index 0000000..edca399
--- /dev/null
+++ b/AudioMultiply_F32.cpp
@@ -0,0 +1,20 @@
+#include "AudioMultiply_F32.h"
+
+void AudioMultiply_F32::update(void) {
+  audio_block_f32_t *block, *in;
+
+  block = AudioStream_F32::receiveWritable_f32(0);
+  if (!block) return;
+
+  in = AudioStream_F32::receiveReadOnly_f32(1);
+  if (!in) {
+    release(block);
+    return;
+  }
+
+  arm_mult_f32(block->data, in->data, block->data, AUDIO_BLOCK_SAMPLES);
+  release(in);
+
+  transmit(block);
+  release(block);
+}
diff --git a/AudioMultiply_F32.h b/AudioMultiply_F32.h
new file mode 100644
index 0000000..08a2584
--- /dev/null
+++ b/AudioMultiply_F32.h
@@ -0,0 +1,12 @@
+#include <arm_math.h>
+#include <AudioStream_F32.h>
+
+class AudioMultiply_F32 : public AudioStream_F32
+{
+  public:
+    AudioMultiply_F32(void) : AudioStream_F32(2, inputQueueArray_f32) {};
+    void update(void);
+    
+  private:
+    audio_block_f32_t *inputQueueArray_f32[2];
+};