gstreamer/ext/metadata/metadataparse.h
Edgard Lima f17824d0d1 Added support for PNG/XMP. Indentation. And fixed pull mode to parse the file.
Original commit message from CVS:
Added support for PNG/XMP. Indentation. And fixed pull mode to parse the file.
2007-11-02 16:50:42 +00:00

113 lines
3.5 KiB
C

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