1 /* -*- c-basic-offset: 2 -*-
2  * GStreamer
3  * Copyright (C) <2008> Vincent Penquerc'h <ogg.k.ogg.k at googlemail dot com>
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Library General Public
7  * License as published by the Free Software Foundation; either
8  * version 2 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * Library General Public License for more details.
14  *
15  * You should have received a copy of the GNU Library General Public
16  * License along with this library; if not, write to the
17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18  * Boston, MA 02110-1301, USA.
19  */
20 
21 
22 #ifndef __GST_KATE_UTIL_H__
23 #define __GST_KATE_UTIL_H__
24 
25 #include <kate/kate.h>
26 #include <gst/gst.h>
27 
28 G_BEGIN_DECLS
29 
30 typedef enum {
31   GST_KATE_FORMAT_UNDEFINED,
32   GST_KATE_FORMAT_SPU,
33   GST_KATE_FORMAT_TEXT_UTF8,
34   GST_KATE_FORMAT_TEXT_PANGO_MARKUP
35 } GstKateFormat;
36 
37 enum
38 {
39   ARG_DEC_BASE_0,
40   ARG_DEC_BASE_LANGUAGE,
41   ARG_DEC_BASE_CATEGORY,
42   ARG_DEC_BASE_ORIGINAL_CANVAS_WIDTH,
43   ARG_DEC_BASE_ORIGINAL_CANVAS_HEIGHT,
44   DECODER_BASE_ARG_COUNT
45 };
46 
47 typedef struct
48 {
49   GstEvent * event;
50   gboolean (*handler)(GstPad *, GstObject*, GstEvent *);
51   GstObject * parent;
52   GstPad *pad;
53 } GstKateDecoderBaseQueuedEvent;
54 
55 typedef struct
56 {
57   GstElement element;
58 
59   kate_state k;
60 
61   gboolean initialized;
62 
63   GstTagList *tags;
64   gboolean tags_changed;
65 
66   gchar *language;
67   gchar *category;
68 
69   gint original_canvas_width;
70   gint original_canvas_height;
71 
72   GstSegment kate_segment;
73   gboolean kate_flushing;
74 
75   gboolean delay_events;
76   GQueue *event_queue;
77 } GstKateDecoderBase;
78 
79 extern GstCaps *gst_kate_util_set_header_on_caps (GstElement * element,
80     GstCaps * caps, GList * headers);
81 extern void gst_kate_util_decode_base_init (GstKateDecoderBase * decoder,
82     gboolean delay_events);
83 extern void gst_kate_util_install_decoder_base_properties (GObjectClass *
84     gobject_class);
85 extern gboolean gst_kate_util_decoder_base_get_property (GstKateDecoderBase *
86     decoder, GObject * object, guint prop_id, GValue * value,
87     GParamSpec * pspec);
88 extern GstFlowReturn
89 gst_kate_util_decoder_base_chain_kate_packet (GstKateDecoderBase * decoder,
90     GstElement * element, GstPad * pad, GstBuffer * buffer, GstPad * srcpad,
91     GstPad * tagpad, GstCaps **src_caps, const kate_event ** ev);
92 extern void
93 gst_kate_util_decoder_base_set_flushing (GstKateDecoderBase * decoder,
94     gboolean flushing);
95 extern void
96 gst_kate_util_decoder_base_segment_event (GstKateDecoderBase * decoder,
97     GstEvent * event);
98 extern gboolean
99 gst_kate_util_decoder_base_update_segment (GstKateDecoderBase * decoder,
100     GstElement * element, GstBuffer * buf);
101 extern GstStateChangeReturn
102 gst_kate_decoder_base_change_state (GstKateDecoderBase * decoder,
103     GstElement * element, GstElementClass * parent_class,
104     GstStateChange transition);
105 extern gboolean gst_kate_decoder_base_convert (GstKateDecoderBase * decoder,
106     GstElement * element, GstPad * pad, GstFormat src_fmt, gint64 src_val,
107     GstFormat * dest_fmt, gint64 * dest_val);
108 extern gboolean gst_kate_decoder_base_sink_query (GstKateDecoderBase * decoder,
109     GstElement * element, GstPad * pad, GstObject * parent, GstQuery * query);
110 extern gboolean
111 gst_kate_util_decoder_base_queue_event (GstKateDecoderBase * decoder,
112     GstEvent * event, gboolean (*handler)(GstPad *, GstObject *, GstEvent *),
113     GstObject * parent, GstPad * pad);
114 extern void
115 gst_kate_util_decoder_base_add_tags (GstKateDecoderBase * decoder,
116     GstTagList * tags, gboolean take_ownership_of_tags);
117 extern GstEvent *
118 gst_kate_util_decoder_base_get_tag_event (GstKateDecoderBase * decoder);
119 extern const char *
120 gst_kate_util_get_error_message (int ret);
121 
122 G_END_DECLS
123 #endif /* __GST_KATE_UTIL_H__ */
124