67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/* ****************************************************************************
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* picture/size.c -- get picture size.
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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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#include "picture.h"
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/**
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* casio_get_picture_size:
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* Get a 'raw' picture size.
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*
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* @arg pixels the picture.
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* @arg fmt the picture format.
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* @arg width the picture width.
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* @arg height the picture height.
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* @return the raw size.
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*/
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size_t casio_get_picture_size(casio_pixel_t **pixels,
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casio_pictureformat_t fmt, unsigned int width, unsigned int height)
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{
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(void)pixels;
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switch (fmt) {
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case casio_pictureformat_1bit: /* FALLTHRU */
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case casio_pictureformat_1bit_r: /* FALLTHRU */
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case casio_pictureformat_1bit_old:
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return (((width / 8) + !!(width % 8)) * height);
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case casio_pictureformat_1bit_packed: /* FALLTHRU */
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case casio_pictureformat_1bit_packed_r:
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return ((width * height / 8) + !!(width * height % 8));
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case casio_pictureformat_2bit_dual:
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return (((width / 8) + !!(width % 8)) * height * 2);
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case casio_pictureformat_4bit: /* FALLTHRU */
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case casio_pictureformat_4bit_code:
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return (width * height / 2);
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case casio_pictureformat_4bit_color: /* FALLTHRU */
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case casio_pictureformat_4bit_mono:
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return (((width / 8) + !!(width % 8)) * height * 4);
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case casio_pictureformat_casemul:
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return (width * height);
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case casio_pictureformat_16bit:
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return (width * height * 2);
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}
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return (0);
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}
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