gstreamer/ext/metadata/metadataparsepng.h

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/*
* 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_PNG_H__
#define __METADATAPARSE_PNG_H__
/*
* includes
*/
#include <gst/base/gstadapter.h>
#include "metadatatypes.h"
G_BEGIN_DECLS
/*
* enum and types
*/
typedef enum _tag_PngParseState
{
PNG_PARSE_NULL,
PNG_PARSE_READING,
PNG_PARSE_JUMPING,
PNG_PARSE_XMP,
PNG_PARSE_DONE
} PngParseState;
typedef struct _tag_PngParseData
{
PngParseState state;
GstAdapter ** xmp_adapter;
MetadataChunkArray * strip_chunks;
gboolean parse_only;
guint32 read;
} PngParseData;
/*
* external function prototypes
*/
extern void
metadataparse_png_init (PngParseData * png_data, GstAdapter ** exif_adpt,
GstAdapter ** iptc_adpt, GstAdapter ** xmp_adpt,
MetadataChunkArray * strip_chunks, MetadataChunkArray * inject_chunks,
gboolean parse_only);
extern void metadataparse_png_dispose (PngParseData * png_data);
extern void metadataparse_png_lazy_update (PngParseData * png_data);
extern MetadataParsingReturn
metadataparse_png_parse (PngParseData * png_data, guint8 * buf,
guint32 * bufsize, const guint32 offset, guint8 ** next_start,
guint32 * next_size);
G_END_DECLS
#endif /* __METADATAPARSE_PNG_H__ */