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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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fb4dbf8ae5
Original commit message from CVS: Changed kclass to "Parser/Extracter/Metadata", changed caps to "image/jpeg, tags-extract=true/false" and changed priority to GST_RANK_PRIMARY+1. Also, srcpad can only work in push mode until fixed to also work in pull mode.
109 lines
3.4 KiB
C
109 lines
3.4 KiB
C
/*
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* GStreamer
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* Copyright 2007 Edgard Lima <edgard.lima@indt.org.br>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Alternatively, the contents of this file may be used under the
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* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
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* which case the following provisions apply instead of the ones
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* mentioned above:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __METADATAPARSE_H__
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#define __METADATAPARSE_H__
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#include <gst/base/gstadapter.h>
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#include "metadataparsejpeg.h"
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G_BEGIN_DECLS
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typedef enum _tag_ParseOption {
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PARSE_OPT_EXIF = (1 << 0),
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PARSE_OPT_IPTC = (1 << 1),
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PARSE_OPT_XMP = (1 << 2),
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PARSE_OPT_ALL = (1 << 3) -1
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} ParseOption;
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typedef enum _tag_ParseState {
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STATE_NULL,
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STATE_READING,
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STATE_DONE
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} ParseState;
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typedef enum _tag_ImageType {
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IMG_NONE,
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IMG_JPEG,
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IMG_PNG
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} ImageType;
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typedef struct _tag_ParseData {
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ParseState state;
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ImageType img_type;
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ParseOption option;
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union {
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JpegData jpeg;
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} format_data;
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GstAdapter *adpt_exif;
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GstAdapter *adpt_iptc;
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GstAdapter *adpt_xmp;
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} ParseData;
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#define PARSE_DATA_IMG_TYPE(p) (p).img_type
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#define PARSE_DATA_OPTION(p) (p).option
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#define set_parse_option(p, m) do { (p).option = (p).option | (m); } while(FALSE)
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#define unset_parse_option(p, m) do { (p).option = (p).option & ~(m); } while(FALSE)
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extern void
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metadataparse_init(ParseData *parse_data);
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/*
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* offset: number of bytes to jump (just a hint to jump a chunk)
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* return:
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* -1 -> error
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* 0 -> done
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* 1 -> need more data
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*/
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extern int
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metadataparse_parse(ParseData *parse_data, const guint8 *buf, guint32 bufsize, guint32 * next_offset, guint32 * next_size);
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extern void
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metadataparse_dispose(ParseData *parse_data);
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G_END_DECLS
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#endif /* __METADATAPARSE_H__ */
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