Olivier Smeesters
A DTMF sequence editor and player for HAM radio equipment command & control.
SoundWaveGenerator/SoundWaveGenerator.cpp@0:1324e7d9d471, 2011-03-07 (annotated)
- Committer:
- osmeest
- Date:
- Mon Mar 07 22:51:19 2011 +0000
- Revision:
- 0:1324e7d9d471
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| osmeest | 0:1324e7d9d471 | 1 | #include "snd_wave_generator/SoundWaveGenerator.h" |
| osmeest | 0:1324e7d9d471 | 2 | |
| osmeest | 0:1324e7d9d471 | 3 | namespace snd_wave_generator { |
| osmeest | 0:1324e7d9d471 | 4 | |
| osmeest | 0:1324e7d9d471 | 5 | void SoundWaveGenerator::play(Wave *wave) |
| osmeest | 0:1324e7d9d471 | 6 | { |
| osmeest | 0:1324e7d9d471 | 7 | wave->prepare(this->sampleRate); |
| osmeest | 0:1324e7d9d471 | 8 | |
| osmeest | 0:1324e7d9d471 | 9 | this->wave = wave; |
| osmeest | 0:1324e7d9d471 | 10 | |
| osmeest | 0:1324e7d9d471 | 11 | this->pos = 0; |
| osmeest | 0:1324e7d9d471 | 12 | this->ticker.attach(this, &SoundWaveGenerator::tickerHandler, 1.0 / this->sampleRate); |
| osmeest | 0:1324e7d9d471 | 13 | } |
| osmeest | 0:1324e7d9d471 | 14 | |
| osmeest | 0:1324e7d9d471 | 15 | void SoundWaveGenerator::stop() |
| osmeest | 0:1324e7d9d471 | 16 | { |
| osmeest | 0:1324e7d9d471 | 17 | this->ticker.detach(); |
| osmeest | 0:1324e7d9d471 | 18 | this->output.write(0.0); |
| osmeest | 0:1324e7d9d471 | 19 | this->wave = NULL; |
| osmeest | 0:1324e7d9d471 | 20 | } |
| osmeest | 0:1324e7d9d471 | 21 | |
| osmeest | 0:1324e7d9d471 | 22 | void SoundWaveGenerator::tickerHandler() |
| osmeest | 0:1324e7d9d471 | 23 | { |
| osmeest | 0:1324e7d9d471 | 24 | float v = this->wave ? this->wave->read(this->pos++) : 0.0; |
| osmeest | 0:1324e7d9d471 | 25 | this->output.write(v); |
| osmeest | 0:1324e7d9d471 | 26 | } |
| osmeest | 0:1324e7d9d471 | 27 | |
| osmeest | 0:1324e7d9d471 | 28 | } // snd_wave_generator |