gstreamer/subprojects/gst-plugins-bad/gst/jpegformat/gstjpegparse.h
Víctor Manuel Jáquez Leal 5542dd395d jpegparse: Rewrite element.
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>
2022-05-20 08:51:23 +00:00

84 lines
2.3 KiB
C

/* GStreamer
*
* jpegparse: a parser for JPEG streams
*
* Copyright (C) <2009> Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
* <2022> Víctor Manuel Jáquez Leal <vjaquez@igalia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_JPEG_PARSE_H__
#define __GST_JPEG_PARSE_H__
#include <gst/gst.h>
#include <gst/base/gstbaseparse.h>
G_BEGIN_DECLS
#define GST_TYPE_JPEG_PARSE \
(gst_jpeg_parse_get_type())
#define GST_JPEG_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JPEG_PARSE,GstJpegParse))
#define GST_JPEG_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JPEG_PARSE,GstJpegParseClass))
#define GST_IS_JPEG_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JPEG_PARSE))
#define GST_IS_JPEG_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JPEG_PARSE))
#define GST_JPEG_PARSE_CAST(obj) ((GstJpegParse *)obj)
typedef struct _GstJpegParse GstJpegParse;
typedef struct _GstJpegParseClass GstJpegParseClass;
struct _GstJpegParse {
GstBaseParse parse;
guint last_offset;
gint state;
gint8 sof;
gint8 adobe_transform;
/* the parsed frame size */
guint16 width, height;
/* format color space */
guint colorspace;
guint sampling;
guint16 x_density;
guint16 y_density;
GstCaps *prev_caps;
/* fps */
gint framerate_numerator;
gint framerate_denominator;
/* tags */
GstTagList *tags;
};
struct _GstJpegParseClass {
GstBaseParseClass parent_class;
};
GType gst_jpeg_parse_get_type (void);
GST_ELEMENT_REGISTER_DECLARE (jpegparse);
G_END_DECLS
#endif /* __GST_JPEG_PARSE_H__ */