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CMSIS-DSP
Verison 3.0
CMSIS DSP Software Library
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Instance structure for the Q15 DCT4/IDCT4 function.
Data Fields | |
uint16_t | N |
uint16_t | Nby2 |
q15_t | normalize |
q15_t * | pTwiddle |
q15_t * | pCosFactor |
arm_rfft_instance_q15 * | pRfft |
arm_cfft_radix4_instance_q15 * | pCfft |
uint16_t arm_dct4_instance_q15::N |
length of the DCT4.
uint16_t arm_dct4_instance_q15::Nby2 |
half of the length of the DCT4.
normalizing factor.
points to the complex FFT instance.
points to the cosFactor table.
points to the real FFT instance.
points to the twiddle factor table.