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139 lines
4 KiB
C
139 lines
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 __METADATA_H__
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#define __METADATA_H__
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/*
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* includes
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*/
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#include <gst/base/gstadapter.h>
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#include "metadatatypes.h"
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#include "metadataparsejpeg.h"
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#include "metadatamuxjpeg.h"
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#include "metadataparsepng.h"
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#include "metadatamuxpng.h"
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G_BEGIN_DECLS
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/*
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* enum and types
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*/
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/* *INDENT-OFF* */
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typedef enum _tag_MetaOptions
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{
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META_OPT_EXIF = (1 << 0),
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META_OPT_IPTC = (1 << 1),
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META_OPT_XMP = (1 << 2),
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META_OPT_PARSE_ONLY = (1 << 3), /* only makes sense with META_OPT_DEMUX */
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META_OPT_DEMUX = (1 << 4), /* to operates in demuxing mode */
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META_OPT_MUX = (1 << 5), /* to operates in muxing mode */
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META_OPT_ALL = (1 << 6) - 1
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} MetaOptions;
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/* *INDENT-ON* */
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typedef enum _tag_MetaState
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{
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STATE_NULL,
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STATE_READING,
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STATE_DONE
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} MetaState;
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typedef enum _tag_ImageType
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{
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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_MetaData
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{
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MetaState state;
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ImageType img_type;
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guint8 options;
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guint32 offset_orig; /* offset since begining of stream */
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union
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{
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JpegParseData jpeg_parse;
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JpegMuxData jpeg_mux;
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PngParseData png_parse;
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PngMuxData png_mux;
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} format_data;
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GstAdapter * exif_adapter;
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GstAdapter * iptc_adapter;
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GstAdapter * xmp_adapter;
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MetadataChunkArray strip_chunks;
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MetadataChunkArray inject_chunks;
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} MetaData;
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/*
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* defines and macros
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*/
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#define META_DATA_IMG_TYPE(p) (p)->img_type
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#define META_DATA_STRIP_CHUNKS(p) (p)->strip_chunks
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#define META_DATA_INJECT_CHUNKS(p) (p)->inject_chunks
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/*
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* external function prototypes
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*/
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extern void metadata_init (MetaData ** meta_data, const MetaOptions options);
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extern void metadata_dispose (MetaData ** meta_data);
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extern MetadataParsingReturn
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metadata_parse (MetaData * meta_data, const guint8 * buf,
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guint32 buf_size, guint32 * next_offset, guint32 * next_size);
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extern void metadata_lazy_update (MetaData * meta_data);
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G_END_DECLS
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#endif /* __METADATA_H__ */
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