Olivier Smeesters
Classes to produce a computed sound wave on the analog output.
Dependents: SoundWaveGeneratorTest SoundWaveGeneratorTest
Diff: SoundWaveGenerator.cpp
- Revision:
- 0:ed89ef772e92
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/SoundWaveGenerator.cpp Mon Jan 24 22:44:39 2011 +0000
@@ -0,0 +1,28 @@
+#include "snd_wave_generator/SoundWaveGenerator.h"
+
+namespace snd_wave_generator {
+
+void SoundWaveGenerator::play(Wave *wave)
+{
+ wave->prepare(this->sampleRate);
+
+ this->wave = wave;
+
+ this->pos = 0;
+ this->ticker.attach(this, &SoundWaveGenerator::tickerHandler, 1.0 / this->sampleRate);
+}
+
+void SoundWaveGenerator::stop()
+{
+ this->ticker.detach();
+ this->output.write(0.0);
+ this->wave = NULL;
+}
+
+void SoundWaveGenerator::tickerHandler()
+{
+ float v = this->wave ? this->wave->read(this->pos++) : 0.0;
+ this->output.write(v);
+}
+
+} // snd_wave_generator