ff_ivi_row_slant4 62 libavcodec/indeo4.c { ff_ivi_row_slant4, ff_ivi_dc_row_slant, 0 }, ff_ivi_row_slant4 223 libavcodec/ivi_dsp.h void ff_ivi_row_slant4(const int32_t *in, int16_t *out, ptrdiff_t pitch,