cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h>
mlib_status mlib_VideoIDCT8x8_S16_S16(mlib_s16 block[64], const mlib_s16 coeffs[64]);
The mlib_VideoIDCT8x8_S16_S16() function computes the inverse DCT (called IDCT) for the output IDCT block of data type mlib_s16 and input DCT coefficients of data type mlib_s16. This function is not guaranteed to be IEEE-1180-compliant. The output of the IDCT routine is the difference between the current block and the reference block. The difference pixel can occupy nine bits and is represented as a 16-bit datum. The output must be added to the motion-compensated reference block in order to reconstruct the current block.
The function takes the following arguments:
block Pointer to an 8x8 motion-compensated block that is the difference between the reference block and the current block. block must be 8-byte aligned.
coeffs Pointer to the source DCT coefficients. coeffs must be 8-byte aligned.
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
See attributes(5) for descriptions of the following attributes:
ATTRIBUTE TYPE | ATTRIBUTE VALUE |
Interface Stability | Evolving |
MT-Level | MT-Safe |
mlib_VideoIDCT_IEEE_S16_S16(3MLIB), mlib_VideoIDCT8x8_S16_S16_DC(3MLIB), mlib_VideoIDCT8x8_S16_S16_NA(3MLIB), mlib_VideoIDCT8x8_S16_S16_Q1(3MLIB), mlib_VideoIDCT8x8_U8_S16(3MLIB), mlib_VideoIDCT8x8_U8_S16_DC(3MLIB), mlib_VideoIDCT8x8_U8_S16_NA(3MLIB), mlib_VideoIDCT8x8_U8_S16_Q1(3MLIB), attributes(5)