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5542dd395d
Now it uses the JPEG parser in libgstcodecparsers, while the whole code is simplified by relying more in baseparser class for tag handling. The element now signals chroma-format and default framerate is 0/1, which is for still-images. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1473>
85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/* GStreamer
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*
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* jpegparse: a parser for JPEG streams
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*
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* Copyright (C) <2009> Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
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* <2022> Víctor Manuel Jáquez Leal <vjaquez@igalia.com>
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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 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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* 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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* 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 this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_JPEG_PARSE_H__
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#define __GST_JPEG_PARSE_H__
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#include <gst/gst.h>
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#include <gst/base/gstbaseparse.h>
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G_BEGIN_DECLS
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#define GST_TYPE_JPEG_PARSE \
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(gst_jpeg_parse_get_type())
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#define GST_JPEG_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JPEG_PARSE,GstJpegParse))
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#define GST_JPEG_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JPEG_PARSE,GstJpegParseClass))
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#define GST_IS_JPEG_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JPEG_PARSE))
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#define GST_IS_JPEG_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JPEG_PARSE))
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#define GST_JPEG_PARSE_CAST(obj) ((GstJpegParse *)obj)
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typedef struct _GstJpegParse GstJpegParse;
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typedef struct _GstJpegParseClass GstJpegParseClass;
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struct _GstJpegParse {
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GstBaseParse parse;
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guint last_offset;
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gint state;
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gint8 sof;
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gint8 adobe_transform;
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/* the parsed frame size */
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guint16 width, height;
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/* format color space */
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guint colorspace;
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guint sampling;
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guint16 x_density;
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guint16 y_density;
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GstCaps *prev_caps;
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/* fps */
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gint framerate_numerator;
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gint framerate_denominator;
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/* tags */
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GstTagList *tags;
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};
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struct _GstJpegParseClass {
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GstBaseParseClass parent_class;
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};
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GType gst_jpeg_parse_get_type (void);
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GST_ELEMENT_REGISTER_DECLARE (jpegparse);
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G_END_DECLS
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#endif /* __GST_JPEG_PARSE_H__ */
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