fft_helpers.h File Reference

#include "lmms_export.h"
#include <vector>
#include <fftw3.h>

Go to the source code of this file.

Namespaces
namespace	lmms

Enumerations
enum class	lmms::FFTWindow { lmms::Rectangular = 0 , lmms::BlackmanHarris , lmms::Hamming , lmms::Hanning }

Functions
float	lmms::maximum (const float *abs_spectrum, unsigned int spec_size)
float	lmms::maximum (const std::vector< float > &abs_spectrum)
int	lmms::normalize (const float *abs_spectrum, float *norm_spectrum, unsigned int bin_count, unsigned int block_size)
int	lmms::normalize (const std::vector< float > &abs_spectrum, std::vector< float > &norm_spectrum, unsigned int block_size)
int	lmms::notEmpty (const std::vector< float > &spectrum)
int	lmms::precomputeWindow (float *window, unsigned int length, FFTWindow type, bool normalized)
int	lmms::absspec (const fftwf_complex *complex_buffer, float *absspec_buffer, unsigned int compl_length)
int	lmms::compressbands (const float *absspec_buffer, float *compressedband, int num_old, int num_new, int bottom, int top)

Variables
constexpr auto	lmms::FFT_BUFFER_SIZE = std::size_t{2048}
const std::vector< unsigned int >	lmms::FFT_BLOCK_SIZES = {256, 512, 1024, 2048, 4096, 8192, 16384}