func: static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t int srcStride[], int srcSliceY, int uint8_t *dst[], int dstStride[]) copyPlane ( src [ 0 ] , srcStride [ 0 ] , srcSliceY , srcSliceH , c -> srcW , dst [ 0 ] , dstStride [ 0 ] ); static void copyPlane(const uint8_t *src, int int srcSliceY, int srcSliceH, int uint8_t *dst, int dstStride) dst += dstStride * srcSliceY; if ( dstStride == srcStride && srcStride > 0 )  memcpy ( dst , src , srcSliceH * dstStride ); 