csky_dct4_instance_f32 Struct Reference

Instance structure for the floating-point DCT4/IDCT4 function.

Data Fields
uint16_t	N
uint16_t	Nby2
float32_t	normalize
float32_t *	pTwiddle
float32_t *	pCosFactor
csky_rfft_instance_f32 *	pRfft
csky_cfft_radix4_instance_f32 *	pCfft

Field Documentation

uint16_t csky_dct4_instance_f32::N

length of the DCT4.

uint16_t csky_dct4_instance_f32::Nby2

half of the length of the DCT4.

float32_t csky_dct4_instance_f32::normalize

normalizing factor.

csky_cfft_radix4_instance_f32* csky_dct4_instance_f32::pCfft

points to the complex FFT instance.

float32_t* csky_dct4_instance_f32::pCosFactor

points to the cosFactor table.

csky_rfft_instance_f32* csky_dct4_instance_f32::pRfft

points to the real FFT instance.

float32_t* csky_dct4_instance_f32::pTwiddle

points to the twiddle factor table.