/* * FITS image format common prototypes and structures * Copyright (c) 2017 Paras Chadha * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVCODEC_FITS_H #define AVCODEC_FITS_H #include <inttypes.h> #include "libavutil/dict.h" typedef enum FITSHeaderState { STATE_SIMPLE, STATE_XTENSION, STATE_BITPIX, STATE_NAXIS, STATE_NAXIS_N, STATE_PCOUNT, STATE_GCOUNT, STATE_REST, } FITSHeaderState; /** * Structure to store the header keywords in FITS file */ typedef struct FITSHeader { FITSHeaderState state; unsigned naxis_index; int bitpix; int64_t blank; int blank_found; int naxis; int naxisn[999]; int pcount; int gcount; int groups; int rgb; /**< 1 if file contains RGB image, 0 otherwise */ int image_extension; double bscale; double bzero; int data_min_found; double data_min; int data_max_found; double data_max; } FITSHeader; /** * Initialize a single header line * @param header pointer to the header * @param state current state of parsing the header * @return 0 if successful otherwise AVERROR_INVALIDDATA */ int avpriv_fits_header_init(FITSHeader *header, FITSHeaderState state); /** * Parse a single header line * @param avcl used in av_log * @param header pointer to the header * @param line one header line * @param metadata used to store metadata while decoding * @return 0 if successful otherwise AVERROR_INVALIDDATA */ int avpriv_fits_header_parse_line(void *avcl, FITSHeader *header, const uint8_t line[80], AVDictionary ***metadata); #endif /* AVCODEC_FITS_H */