Allocate and return an SwsContext. You need it to perform
scaling/conversion operations using sws_scale().
@param srcW the width of the source image
@param srcH the height of the source image
@param srcFormat the source image format
@param dstW the width of the destination image
@param dstH the height of the destination image
@param dstFormat the destination image format
@param flags specify which algorithm and options to use for rescaling
@return a pointer to an allocated context, or NULL in case of error
@note this function is to be removed after a saner alternative is
written
Allocate and return an SwsContext. You need it to perform scaling/conversion operations using sws_scale().
@param srcW the width of the source image @param srcH the height of the source image @param srcFormat the source image format @param dstW the width of the destination image @param dstH the height of the destination image @param dstFormat the destination image format @param flags specify which algorithm and options to use for rescaling @return a pointer to an allocated context, or NULL in case of error @note this function is to be removed after a saner alternative is written