78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/* ****************************************************************************
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* mcsfile/mcsfile.h -- MCS file internals.
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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 libcasio.
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* libcasio 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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* libcasio 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 libcasio; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************* */
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#ifndef LOCAL_MCSFILE_H
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# define LOCAL_MCSFILE_H 1
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# include "../internals.h"
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/* ---
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* Macros for interacting with the buffer.
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* --- */
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/* Read from a stream. */
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# define READ(CASIO__TO, CASIO__SZ) /* normal read */ { \
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int READ_err = casio_read(buffer, (CASIO__TO), (CASIO__SZ), 0); \
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if (READ_err) return (READ_err); }
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# define FREAD(CASIO__TO, CASIO__SZ) /* fail-less read */ \
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err = casio_read(buffer, (CASIO__TO), (CASIO__SZ), 0);
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# define GREAD(CASIO__TO, CASIO__SZ) /* read with goto fail */ \
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if ((err = casio_read(buffer, (CASIO__TO), (CASIO__SZ), 0))) \
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goto fail;
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/* Read using size of the object. */
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# define DREAD(CASIO__TO) \
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READ(&CASIO__TO, sizeof(CASIO__TO))
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# define GDREAD(CASIO__TO) \
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GREAD(&CASIO__TO, sizeof(CASIO__TO))
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/* Skip. */
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# define SKIP(CASIO__SZ) { \
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int SKIP_err = casio_skip(buffer, CASIO__SZ); \
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if (SKIP_err) return (SKIP_err); }
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# define GSKIP(CASIO__SZ) { \
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err = casio_skip(buffer, CASIO__SZ); \
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if (err) goto fail; }
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/* Write. */
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# define WRITE(CASIO__BUF, CASIO__SZ) { \
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int WRITE_err = casio_write(buffer, (CASIO__BUF), (CASIO__SZ), 0); \
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if (WRITE_err) return (WRITE_err); }
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# define DWRITE(CASIO__OBJECT) \
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WRITE(&(CASIO__OBJECT), sizeof(CASIO__OBJECT))
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/* ---
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* Picture utilities.
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* --- */
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# define alloc_pixels(W, H) \
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casio_alloc(sizeof(casio_pixel_t*) \
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* (H) + sizeof(casio_pixel_t) * (W) * (H), 1)
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# define prepare_pixels(I, W, H) { \
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unsigned int PIXPREP_y; \
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casio_pixel_t *PIXPREP_line = (casio_pixel_t*)&(I)[(H)]; \
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for (PIXPREP_y = 0; PIXPREP_y < (H); PIXPREP_y++) { \
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(I)[PIXPREP_y] = PIXPREP_line; \
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PIXPREP_line += (W); \
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}}
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#endif
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