CMSIS-DSP
Version 1.10.0
CMSIS DSP Software Library
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Instance structure for the Q31 DCT4/IDCT4 function.
Data Fields | |
uint16_t | N |
uint16_t | Nby2 |
q31_t | normalize |
const q31_t * | pTwiddle |
const q31_t * | pCosFactor |
arm_rfft_instance_q31 * | pRfft |
arm_cfft_radix4_instance_q31 * | pCfft |
uint16_t N |
length of the DCT4.
uint16_t Nby2 |
half of the length of the DCT4.
q31_t normalize |
normalizing factor.
arm_cfft_radix4_instance_q31* pCfft |
points to the complex FFT instance.
const q31_t* pCosFactor |
points to the cosFactor table.
arm_rfft_instance_q31* pRfft |
points to the real FFT instance.
const q31_t* pTwiddle |
points to the twiddle factor table.