Olivier Smeesters
A DTMF sequence editor and player for HAM radio equipment command & control.
SoundWaveGenerator/snd_wave_generator/WaveBuffer.h@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 | #ifndef WAVE_BUFFER_H_ |
| osmeest | 0:1324e7d9d471 | 2 | #define WAVE_BUFFER_H_ |
| osmeest | 0:1324e7d9d471 | 3 | |
| osmeest | 0:1324e7d9d471 | 4 | #include <cstddef> |
| osmeest | 0:1324e7d9d471 | 5 | |
| osmeest | 0:1324e7d9d471 | 6 | namespace snd_wave_generator { |
| osmeest | 0:1324e7d9d471 | 7 | |
| osmeest | 0:1324e7d9d471 | 8 | /** |
| osmeest | 0:1324e7d9d471 | 9 | * @brief A class used to hold buffered sound wave data. |
| osmeest | 0:1324e7d9d471 | 10 | * It's basically a vector of floats which can be read in a cyclic way. |
| osmeest | 0:1324e7d9d471 | 11 | */ |
| osmeest | 0:1324e7d9d471 | 12 | class WaveBuffer { |
| osmeest | 0:1324e7d9d471 | 13 | public: |
| osmeest | 0:1324e7d9d471 | 14 | WaveBuffer() : size_(0), capacity_(0), data_(NULL) { } |
| osmeest | 0:1324e7d9d471 | 15 | ~WaveBuffer() { delete[] this->data_; } |
| osmeest | 0:1324e7d9d471 | 16 | |
| osmeest | 0:1324e7d9d471 | 17 | void resize(std::size_t size); |
| osmeest | 0:1324e7d9d471 | 18 | |
| osmeest | 0:1324e7d9d471 | 19 | void write(std::size_t pos, float v) { |
| osmeest | 0:1324e7d9d471 | 20 | if (pos < this->size_) { |
| osmeest | 0:1324e7d9d471 | 21 | this->data_[pos] = v; |
| osmeest | 0:1324e7d9d471 | 22 | } |
| osmeest | 0:1324e7d9d471 | 23 | } |
| osmeest | 0:1324e7d9d471 | 24 | |
| osmeest | 0:1324e7d9d471 | 25 | float read(std::size_t pos) const { |
| osmeest | 0:1324e7d9d471 | 26 | return this->data_[pos % this->size_]; |
| osmeest | 0:1324e7d9d471 | 27 | } |
| osmeest | 0:1324e7d9d471 | 28 | |
| osmeest | 0:1324e7d9d471 | 29 | private: |
| osmeest | 0:1324e7d9d471 | 30 | std::size_t size_; |
| osmeest | 0:1324e7d9d471 | 31 | std::size_t capacity_; |
| osmeest | 0:1324e7d9d471 | 32 | float *data_; |
| osmeest | 0:1324e7d9d471 | 33 | }; |
| osmeest | 0:1324e7d9d471 | 34 | |
| osmeest | 0:1324e7d9d471 | 35 | } // snd_wave_generator |
| osmeest | 0:1324e7d9d471 | 36 | |
| osmeest | 0:1324e7d9d471 | 37 | #endif // WAVE_BUFFER_H_ |