cc [ flag... ] file... –lmlib [ library... ] #include <mlib.h> mlib_status mlib_VideoDCT2x2_S16_S16(mlib_s16 coeffs[4], const mlib_s16 block[4]);
The mlib_VideoDCT2x2_S16_S16() function computes the forward DCT for the destination DCT coefficients of data type mlib_s16 and a source block of data type mlib_s16. The input to the DCT 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 source and destination buffer addresses must be 8-byte aligned.
The function takes the following arguments:
Pointer to the destination DCT coefficients. coeffs must be 8-byte aligned.
Pointer to an 2x2 motion-compensated block that is the difference between the reference block and the current block. block 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:
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mlib_VideoDCT2x2_S16_S16(3MLIB), mlib_VideoDCT4x4_S16_S16(3MLIB), mlib_VideoDCT8x8_S16_S16(3MLIB), mlib_VideoDCT8x8_S16_S16_B12(3MLIB), mlib_VideoDCT8x8_S16_S16_NA(3MLIB), mlib_VideoDCT8x8_S16_U8(3MLIB), mlib_VideoDCT8x8_S16_U8_NA(3MLIB), mlib_VideoDCT16x16_S16_S16(3MLIB), mlib_VideoDCT16x16_S16_S16_B10(3MLIB), mlib_VideoDeQuantize_S16(3MLIB), mlib_VideoDeQuantizeInit_S16(3MLIB), mlib_VideoQuantize_S16(3MLIB), mlib_VideoQuantizeInit_S16(3MLIB), attributes(5)