Get a potentially optimized pointer to a Sum-of-absolute-differences
function (see the av_pixelutils_sad_fn prototype).
@param w_bits 1<<w_bits is the requested width of the block size
@param h_bits 1<<h_bits is the requested height of the block size
@param aligned If set to 2, the returned sad function will assume src1 and
src2 addresses are aligned on the block size.
If set to 1, the returned sad function will assume src1 is
aligned on the block size.
If set to 0, the returned sad function assume no particular
alignment.
@param log_ctx context used for logging, can be NULL
@return a pointer to the SAD function or NULL in case of error (because of
invalid parameters)
Get a potentially optimized pointer to a Sum-of-absolute-differences function (see the av_pixelutils_sad_fn prototype).
@param w_bits 1<<w_bits is the requested width of the block size @param h_bits 1<<h_bits is the requested height of the block size @param aligned If set to 2, the returned sad function will assume src1 and src2 addresses are aligned on the block size. If set to 1, the returned sad function will assume src1 is aligned on the block size. If set to 0, the returned sad function assume no particular alignment. @param log_ctx context used for logging, can be NULL
@return a pointer to the SAD function or NULL in case of error (because of invalid parameters)