Implemented very basic tone generator

2019-09-07 23:00:37 +02:00
parent f612e4e14f
commit 4c95889a91
15 changed files with 279 additions and 142 deletions
@@ -0,0 +1,24 @@
+#include "debugtonegenerator.h"
+
+// system includes
+#include <cmath>
+#include <limits>
+
+std::size_t DebugToneGenerator::fill(SamplePair *begin, SamplePair *end)
+{
+    for (auto iter = begin; iter != end; iter++)
+    {
+        Q_ASSERT(iter <= end);
+        iter->first = std::sin(m_counter) * std::numeric_limits<SamplePair::Type>::max() / 2;
+        iter->second = std::sin((m_counter*8.f) + std::sin(m_offset)*10.) *(0.5 * (.7f + (std::sin(m_counter - M_PI/2) * .3f))) * std::numeric_limits<SamplePair::Type>::max() / 2;
+
+        m_counter+= 1. / samplerate() * (1000. + (std::sin(m_freq) * 500.));
+        m_offset+=0.00001f;
+        m_freq+=1. / samplerate() * 4;
+    }
+
+    while (m_counter >= M_PI * 2)
+        m_counter -= M_PI * 2;
+
+    return std::distance(begin, end);
+}