1 /* GStreamer 2 * 3 * jpegparse: a parser for JPEG streams 4 * 5 * Copyright (C) <2009> Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this library; if not, write to the 19 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 */ 22 23 #ifndef __GST_JPEG_PARSE_H__ 24 #define __GST_JPEG_PARSE_H__ 25 26 #include <gst/gst.h> 27 #include <gst/base/gstadapter.h> 28 #include <gst/base/gstbaseparse.h> 29 30 #include "gstjpegformat.h" 31 32 G_BEGIN_DECLS 33 34 #define GST_TYPE_JPEG_PARSE \ 35 (gst_jpeg_parse_get_type()) 36 #define GST_JPEG_PARSE(obj) \ 37 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JPEG_PARSE,GstJpegParse)) 38 #define GST_JPEG_PARSE_CLASS(klass) \ 39 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JPEG_PARSE,GstJpegParseClass)) 40 #define GST_IS_JPEG_PARSE(obj) \ 41 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JPEG_PARSE)) 42 #define GST_IS_JPEG_PARSE_CLASS(klass) \ 43 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JPEG_PARSE)) 44 #define GST_JPEG_PARSE_CAST(obj) ((GstJpegParse *)obj) 45 46 typedef struct _GstJpegParse GstJpegParse; 47 typedef struct _GstJpegParseClass GstJpegParseClass; 48 49 struct _GstJpegParse { 50 GstBaseParse parse; 51 52 guint last_offset; 53 guint last_entropy_len; 54 gboolean last_resync; 55 56 /* negotiated state */ 57 gint caps_width, caps_height; 58 gint caps_framerate_numerator; 59 gint caps_framerate_denominator; 60 61 /* the parsed frame size */ 62 guint16 width, height; 63 64 /* format color space */ 65 const gchar *format; 66 67 /* TRUE if the src caps sets a specific framerate */ 68 gboolean has_fps; 69 70 /* the (expected) timestamp of the next frame */ 71 guint64 next_ts; 72 73 /* duration of the current frame */ 74 guint64 duration; 75 76 /* video state */ 77 gint framerate_numerator; 78 gint framerate_denominator; 79 80 /* tags */ 81 GstTagList *tags; 82 }; 83 84 struct _GstJpegParseClass { 85 GstBaseParseClass parent_class; 86 }; 87 88 GType gst_jpeg_parse_get_type (void); 89 90 GST_ELEMENT_REGISTER_DECLARE (jpegparse); 91 92 G_END_DECLS 93 94 #endif /* __GST_JPEG_PARSE_H__ */ 95