static OPJ_BOOL opj_tcd_dc_level_shift_decode ( opj_tcd_t *p_tcd )
{
        OPJ_UINT32 compno;
        opj_tcd_tilecomp_t * l_tile_comp = 00;
        opj_tccp_t * l_tccp = 00;
        opj_image_comp_t * l_img_comp = 00;
        opj_tcd_resolution_t* l_res = 00;
        opj_tcd_tile_t * l_tile;
        OPJ_UINT32 l_width,l_height,i,j;
        OPJ_INT32 * l_current_ptr;
        OPJ_INT32 l_min, l_max;
        OPJ_UINT32 l_stride;

        l_tile = p_tcd->tcd_image->tiles;
        l_tile_comp = l_tile->comps;
        l_tccp = p_tcd->tcp->tccps;
        l_img_comp = p_tcd->image->comps;

        for (compno = 0; compno < l_tile->numcomps; compno++) {
                l_res = l_tile_comp->resolutions + l_img_comp->resno_decoded;
                l_width = (OPJ_UINT32)(l_res->x1 - l_res->x0);
                l_height = (OPJ_UINT32)(l_res->y1 - l_res->y0);
                l_stride = (OPJ_UINT32)(l_tile_comp->x1 - l_tile_comp->x0) - l_width;

                assert(l_height == 0 || l_width + l_stride <= l_tile_comp->data_size / l_height); /*MUPDF*/

                if (l_img_comp->sgnd) {
                        l_min = -(1 << (l_img_comp->prec - 1));
                        l_max = (1 << (l_img_comp->prec - 1)) - 1;
                }
                else {
            l_min = 0;
                        l_max = (1 << l_img_comp->prec) - 1;
                }

                l_current_ptr = l_tile_comp->data;

                if (l_tccp->qmfbid == 1) {
                        for (j=0;j<l_height;++j) {
                                for (i = 0; i < l_width; ++i) {
                                        *l_current_ptr = opj_int_clamp(*l_current_ptr + l_tccp->m_dc_level_shift, l_min, l_max);
                                        ++l_current_ptr;
                                }
                                l_current_ptr += l_stride;
                        }
                }
                else {
                        for (j=0;j<l_height;++j) {
                                for (i = 0; i < l_width; ++i) {
                                        OPJ_FLOAT32 l_value = *((OPJ_FLOAT32 *) l_current_ptr);
                                        *l_current_ptr = opj_int_clamp((OPJ_INT32)opj_lrintf(l_value) + l_tccp->m_dc_level_shift, l_min, l_max); ;
                                        ++l_current_ptr;
                                }
                                l_current_ptr += l_stride;
                        }
                }

                ++l_img_comp;
                ++l_tccp;
                ++l_tile_comp;
        }

        return OPJ_TRUE;
}
Unknown