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83 lines
2.3 KiB
83 lines
2.3 KiB
/* |
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* FITS image format common prototypes and structures |
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* Copyright (c) 2017 Paras Chadha |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg 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. See the GNU |
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* 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 |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_FITS_H |
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#define AVCODEC_FITS_H |
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#include <inttypes.h> |
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#include <libavutil/dict.h> |
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typedef enum FITSHeaderState { |
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STATE_SIMPLE, |
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STATE_XTENSION, |
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STATE_BITPIX, |
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STATE_NAXIS, |
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STATE_NAXIS_N, |
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STATE_PCOUNT, |
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STATE_GCOUNT, |
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STATE_REST, |
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} FITSHeaderState; |
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/** |
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* Structure to store the header keywords in FITS file |
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*/ |
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typedef struct FITSHeader { |
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FITSHeaderState state; |
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unsigned naxis_index; |
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int bitpix; |
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int64_t blank; |
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int blank_found; |
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int naxis; |
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int naxisn[999]; |
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int pcount; |
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int gcount; |
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int groups; |
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int rgb; /**< 1 if file contains RGB image, 0 otherwise */ |
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int image_extension; |
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double bscale; |
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double bzero; |
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int data_min_found; |
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double data_min; |
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int data_max_found; |
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double data_max; |
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} FITSHeader; |
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/** |
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* Initialize a single header line |
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* @param header pointer to the header |
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* @param state current state of parsing the header |
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* @return 0 if successful otherwise AVERROR_INVALIDDATA |
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*/ |
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int avpriv_fits_header_init(FITSHeader *header, FITSHeaderState state); |
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/** |
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* Parse a single header line |
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* @param avcl used in av_log |
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* @param header pointer to the header |
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* @param line one header line |
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* @param metadata used to store metadata while decoding |
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* @return 0 if successful otherwise AVERROR_INVALIDDATA |
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*/ |
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int avpriv_fits_header_parse_line(void *avcl, FITSHeader *header, const uint8_t line[80], AVDictionary ***metadata); |
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#endif /* AVCODEC_FITS_H */
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