gserialized2_drop_gbox()

GSERIALIZED* gserialized2_drop_gbox

(

GSERIALIZED *

g

)

Remove the bounding box from a GSERIALIZED.

Returns a freshly allocated GSERIALIZED every time.

Definition at line 1635 of file gserialized2.c.

{
        int g_ndims = G2FLAGS_NDIMS_BOX(g->gflags);
        size_t box_size = 2 * g_ndims * sizeof(float);
        size_t g_out_size = LWSIZE_GET(g->size) - box_size;
        GSERIALIZED *g_out = lwalloc(g_out_size);
 
        /* Copy the contents while omitting the box */
        if (G2FLAGS_GET_BBOX(g->gflags))
        {
                uint8_t *outptr = (uint8_t*)g_out;
                uint8_t *inptr = (uint8_t*)g;
                /* Copy the header (size+type) of g into place */
                memcpy(outptr, inptr, 8); outptr += 8; inptr += 8;
                /* Copy extended flags, if there are any */
                if (G2FLAGS_GET_EXTENDED(g->gflags))
                {
                        memcpy(outptr, inptr, 8); outptr += 8; inptr += 8;
                }
                /* Advance past box */
                inptr += box_size;
                /* Copy parts after the box into place */
                memcpy(outptr, inptr, g_out_size - 8);
                G2FLAGS_SET_BBOX(g_out->gflags, 0);
                LWSIZE_SET(g_out->size, g_out_size);
        }
        /* No box? Nothing to do but copy and return. */
        else
        {
                memcpy(g_out, g, g_out_size);
        }
 
        return g_out;
}

References G2FLAGS_GET_BBOX, G2FLAGS_GET_EXTENDED, G2FLAGS_NDIMS_BOX, G2FLAGS_SET_BBOX, GSERIALIZED::gflags, lwalloc(), LWSIZE_GET, LWSIZE_SET, and GSERIALIZED::size.

Referenced by gserialized_drop_gbox().

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