71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
/* *****************************************************************************
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* libg1m/picture.h -- libg1m picture formats.
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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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#ifndef LIBG1M_PICTURE_H
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# define LIBG1M_PICTURE_H
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# ifdef __cplusplus
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extern "C" {
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# endif
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/* picture format */
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typedef int g1m_pictureformat_t;
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# define g1m_pictureformat_1bit_packed 0x0101
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# define g1m_pictureformat_1bit_reverse 0x0102
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# define g1m_pictureformat_2bit_dual 0x0201
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# define g1m_pictureformat_4bit_rgb 0x0401
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# define g1m_pictureformat_4bit_code 0x0402
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# define g1m_pictureformat_4bit_color 0x0403
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# define g1m_pictureformat_4bit_mono 0x0404
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# define g1m_pictureformat_16bit 0x1000
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/* get size of the raw buffer */
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# define g1m_picturesize_1bit_packed(W, H) \
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((W) * (H) / 8)
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# define g1m_picturesize_1bit_reverse(W, H) \
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g1m_picturesize_1bit_packed(W, H)
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# define g1m_picturesize_1bit_color(W, H) \
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(4 * g1m_picturesize_1bit_reverse(W, H))
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# define g1m_picturesize_1bit_mono(W, H) \
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g1m_picturesize_1bit_color(W, H)
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# define g1m_picturesize_2bit_dual(W, H) \
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(((W) * (H) / 4) * 2)
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# define g1m_picturesize_4bit(W, H) \
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((W) * (H) / 2)
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# define g1m_picturesize_4bit_rgb(W, H) \
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g1m_picturesize_4bit(W, H)
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# define g1m_picturesize_4bit_code(W, H) \
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g1m_picturesize_4bit(W, H)
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# define g1m_picturesize_16bit(W, H) \
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((W) * (H) * 2)
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/* encoding and decoding functions */
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extern int g1m_decode_picture(uint32_t **pixels,
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g1m_pictureformat_t format, const unsigned char *raw,
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unsigned int width, unsigned int height);
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extern int g1m_encode_picture(const uint32_t **pixels,
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g1m_pictureformat_t format, unsigned char *raw,
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unsigned int width, unsigned int height);
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# ifdef __cplusplus
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}
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# endif
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#endif /* LIBG1M_PICTURE_H */
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