90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/* *****************************************************************************
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* decode/mcs/list.c -- decode an MCS list.
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* Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
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*
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* This file is part of libg1m.
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* libg1m is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3.0 of the License,
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* or (at your option) any later version.
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*
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* libg1m is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libg1m; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************** */
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#include <libg1m/internals.h>
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/**
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* g1m_decode_mcs_list:
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* Decode an List.
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*
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* @arg handle the handle to make.
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* @arg buffer the buffer to read from.
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* @arg head the pre-filled head to complete and use.
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* @return the error code (0 if ok).
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*/
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int g1m_decode_mcs_list(g1m_mcsfile_t **handle, g1m_buffer_t *buffer,
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g1m_mcshead_t *head)
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{
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/* read header */
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DREAD(hd, mcs_listheader)
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uint_fast16_t elcount = be16toh(hd.element_count);
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log_info("Title is '%.8s'", hd.title);
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/* make final head */
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head->width = 1;
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head->height = elcount;
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int err = g1m_make_mcsfile(handle, head);
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if (err) return (err);
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/* main copying loop */
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g1m_mcs_cell_t **tab = (*handle)->cells; int one_imgn = 0;
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for (uint_fast32_t y = 0; y < elcount; y++) {
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g1m_bcd_t bcd; GDREAD(rawbcd, bcd)
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one_imgn |= g1m_bcd_frommcs(&rawbcd, &bcd);
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/* prepare index and store */
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tab[y][0] = (g1m_mcs_cell_t){
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.real = bcd,
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.imgn = {},
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.used = 1
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};
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}
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/* main copying loop for imaginary parts */
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if (one_imgn) for (uint_fast32_t y = 0; y < elcount; y++) {
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g1m_bcd_t bcd; GDREAD(rawbcd, bcd)
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if (g1m_bcd_has_special(&tab[y][0].real)) {
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g1m_bcd_frommcs(&rawbcd, &bcd);
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tab[y][0].imgn = bcd;
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}
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}
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#if LOGLEVEL <= ll_info
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/* logging loop */
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char rbuf[G1M_BCD_GOODBUFSIZE], ibuf[G1M_BCD_GOODBUFSIZE];
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for (uint_fast32_t y = 0; y < elcount; y++) {
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g1m_bcdtoa(&tab[y][0].real, rbuf, G1M_BCD_GOODBUFSIZE);
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if (g1m_bcd_has_special(&tab[y][0].real)) {
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g1m_bcdtoa(&tab[y][0].imgn, ibuf, G1M_BCD_GOODBUFSIZE);
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log_info("[%" PRIuFAST32 "] %si + %s", y, ibuf, rbuf);
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} else
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log_info("[%" PRIuFAST32 "] %s", y, rbuf);
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}
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#endif
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/* no error */
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return (0);
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/* in case */
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fail:
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g1m_free_mcsfile(*handle);
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*handle = NULL;
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return (err);
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}
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