WaveBuffer.h

00001 #ifndef WAVE_BUFFER_H_
00002 #define WAVE_BUFFER_H_
00003 
00004 #include <cstddef>
00005 
00006 namespace snd_wave_generator {
00007 
00008 /**
00009  * @brief A class used to hold buffered sound wave data.
00010  * It's basically a vector of floats which can be read in a cyclic way.
00011  */
00012 class WaveBuffer {
00013 public:
00014     WaveBuffer() : size_(0), capacity_(0), data_(NULL) { }
00015     ~WaveBuffer() { delete[] this->data_; }
00016     
00017     void resize(std::size_t size);
00018     
00019     void write(std::size_t pos, float v) { 
00020         if (pos < this->size_) {
00021             this->data_[pos] = v; 
00022         }
00023     }
00024     
00025     float read(std::size_t pos) const { 
00026         return this->data_[pos % this->size_]; 
00027     }
00028 
00029 private:
00030     std::size_t size_;
00031     std::size_t capacity_;
00032     float *data_;
00033 };
00034 
00035 } // snd_wave_generator
00036 
00037 #endif // WAVE_BUFFER_H_