ff_init_slice_from_src  350 libswscale/swscale.c     ff_init_slice_from_src(src_slice, (uint8_t**)src, srcStride, c->srcW,
ff_init_slice_from_src  353 libswscale/swscale.c     ff_init_slice_from_src(vout_slice, (uint8_t**)dst, dstStride, c->dstW,
ff_init_slice_from_src 1005 libswscale/swscale_internal.h int ff_init_slice_from_src(SwsSlice * s, uint8_t *src[4], int stride[4], int srcW, int lumY, int lumH, int chrY, int chrH, int relative);