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Otherwise, the user requested priority of packet side data will be ignored. For this, move the relevant functions to decode.c, as they need access to an AVCodecContext. Signed-off-by: James Almer <jamrial@gmail.com>
76 lines
2.9 KiB
C
76 lines
2.9 KiB
C
/*
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* EXIF metadata parser - internal functions
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* Copyright (c) 2013 Thilo Borgmann <thilo.borgmann _at_ mail.de>
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* Copyright (c) 2024-2025 Leo Izen <leo.izen@gmail.com>
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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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/**
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* @file
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* EXIF metadata parser - internal functions
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* @author Thilo Borgmann <thilo.borgmann _at_ mail.de>
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* @author Leo Izen <leo.izen@gmail.com>
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*/
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#ifndef AVCODEC_EXIF_INTERNAL_H
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#define AVCODEC_EXIF_INTERNAL_H
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#include "libavutil/buffer.h"
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#include "libavutil/frame.h"
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#include "exif.h"
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#include "version_major.h"
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#if FF_API_OLD_EXIF
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/* Used by the AVI demuxer */
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int avpriv_exif_decode_ifd(void *logctx, const uint8_t *buf, int size,
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int le, int depth, AVDictionary **metadata);
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#endif /* FF_API_OLD_EXIF */
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#define MAKERNOTE_TAG 0x927c
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#define ORIENTATION_TAG 0x112
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#define EXIFIFD_TAG 0x8769
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#define IMAGE_WIDTH_TAG 0x100
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#define IMAGE_LENGTH_TAG 0x101
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#define PIXEL_X_TAG 0xa002
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#define PIXEL_Y_TAG 0xa003
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/**
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* Compares values in the IFD with data in the provided AVFrame and sets the values
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* in that IFD to match the ones in that AVFrame. This is mostly useful for an
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* encoder that wishes to use ff_exif_get_buffer, but would prefer to modify the
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* IFD after it is sanitized and call av_exif_write afterward.
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*/
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int ff_exif_sanitize_ifd(void *logctx, const AVFrame *frame, AVExifMetadata *ifd);
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/**
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* Gets all relevant side data, collects it into an IFD, and writes it into the
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* corresponding buffer pointer. This includes both AV_FRAME_DATA_EXIF and other
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* side data types that are included in the frame data, such as possibly an
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* instance of AV_FRAME_DATA_DISPLAYMATRIX. It also sets width and height tags
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* to match those of the AVFrame if they are different.
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*
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* Upon error, *buffer will be NULL. The buffer becomes owned by the caller upon
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* success. The *buffer argument must be NULL before calling. If *buffer is NULL
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* upon return then a negative return value indicates an error, and a zero return
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* value indicates that there was no EXIF data to write.
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*/
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int ff_exif_get_buffer(void *logctx, const AVFrame *frame, AVBufferRef **buffer, enum AVExifHeaderMode header_mode);
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#endif /* AVCODEC_EXIF_INTERNAL_H */
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