|
1 /* GStreamer |
|
2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
|
3 * Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.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., 59 Temple Place - Suite 330, |
|
18 * Boston, MA 02111-1307, USA. |
|
19 */ |
|
20 |
|
21 #ifndef __GST_AVI_DEMUX_H__ |
|
22 #define __GST_AVI_DEMUX_H__ |
|
23 |
|
24 #include <gst/gst.h> |
|
25 |
|
26 #include "avi-ids.h" |
|
27 #include "gst/riff/riff-ids.h" |
|
28 #include "gst/riff/riff-read.h" |
|
29 #include <gst/base/gstadapter.h> |
|
30 |
|
31 G_BEGIN_DECLS |
|
32 |
|
33 #define GST_TYPE_AVI_DEMUX \ |
|
34 (gst_avi_demux_get_type ()) |
|
35 #define GST_AVI_DEMUX(obj) \ |
|
36 (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AVI_DEMUX, GstAviDemux)) |
|
37 #define GST_AVI_DEMUX_CLASS(klass) \ |
|
38 (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AVI_DEMUX, GstAviDemuxClass)) |
|
39 #define GST_IS_AVI_DEMUX(obj) \ |
|
40 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AVI_DEMUX)) |
|
41 #define GST_IS_AVI_DEMUX_CLASS(klass) \ |
|
42 (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AVI_DEMUX)) |
|
43 |
|
44 #define GST_AVI_DEMUX_MAX_STREAMS 16 |
|
45 |
|
46 #define CHUNKID_TO_STREAMNR(chunkid) \ |
|
47 ((((chunkid) & 0xff) - '0') * 10 + \ |
|
48 (((chunkid) >> 8) & 0xff) - '0') |
|
49 |
|
50 #define GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME 1 |
|
51 |
|
52 /* 48 bytes */ |
|
53 typedef struct { |
|
54 guint index_nr; /* = (entry-index_entries)/sizeof(gst_avi_index_entry); */ |
|
55 guchar stream_nr; |
|
56 guchar flags; |
|
57 guint64 ts; |
|
58 guint64 dur; /* =entry[1].ts-entry->ts */ |
|
59 guint64 offset; |
|
60 guint64 bytes_before; /* calculated */ |
|
61 guint32 frames_before; /* calculated */ |
|
62 guint32 size; /* could be read from the chunk (if we don't split) */ |
|
63 } gst_avi_index_entry; |
|
64 |
|
65 typedef struct { |
|
66 /* index of this streamcontext */ |
|
67 guint num; |
|
68 |
|
69 /* pad*/ |
|
70 GstPad *pad; |
|
71 |
|
72 /* stream info and headers */ |
|
73 gst_riff_strh *strh; |
|
74 union { |
|
75 gst_riff_strf_vids *vids; |
|
76 gst_riff_strf_auds *auds; |
|
77 gst_riff_strf_iavs *iavs; |
|
78 gpointer data; |
|
79 } strf; |
|
80 GstBuffer *extradata, *initdata; |
|
81 gchar *name; |
|
82 |
|
83 /* current position (byte, frame, time) and other status vars */ |
|
84 guint current_frame; |
|
85 guint64 current_byte; |
|
86 GstFlowReturn last_flow; |
|
87 gboolean discont; |
|
88 |
|
89 /* stream length */ |
|
90 guint64 total_bytes; |
|
91 guint32 total_frames; |
|
92 guint32 total_blocks; |
|
93 /* stream length according to index */ |
|
94 GstClockTime idx_duration; |
|
95 /* stream length according to header */ |
|
96 GstClockTime hdr_duration; |
|
97 /* stream length based on header/index */ |
|
98 GstClockTime duration; |
|
99 |
|
100 /* VBR indicator */ |
|
101 gboolean is_vbr; |
|
102 |
|
103 /* openDML support (for files >4GB) */ |
|
104 gboolean superindex; |
|
105 guint64 *indexes; |
|
106 |
|
107 GstTagList *taglist; |
|
108 } avi_stream_context; |
|
109 |
|
110 typedef enum { |
|
111 GST_AVI_DEMUX_START, |
|
112 GST_AVI_DEMUX_HEADER, |
|
113 GST_AVI_DEMUX_MOVI, |
|
114 } GstAviDemuxState; |
|
115 |
|
116 typedef enum { |
|
117 GST_AVI_DEMUX_HEADER_TAG_LIST, |
|
118 GST_AVI_DEMUX_HEADER_AVIH, |
|
119 GST_AVI_DEMUX_HEADER_ELEMENTS, |
|
120 GST_AVI_DEMUX_HEADER_INFO, |
|
121 GST_AVI_DEMUX_HEADER_JUNK, |
|
122 GST_AVI_DEMUX_HEADER_DATA |
|
123 } GstAviDemuxHeaderState; |
|
124 |
|
125 typedef struct _GstAviDemux { |
|
126 GstElement parent; |
|
127 |
|
128 /* pads */ |
|
129 GstPad *sinkpad; |
|
130 |
|
131 /* AVI decoding state */ |
|
132 GstAviDemuxState state; |
|
133 GstAviDemuxHeaderState header_state; |
|
134 guint64 offset; |
|
135 |
|
136 /* index */ |
|
137 gst_avi_index_entry *index_entries; |
|
138 guint index_size; |
|
139 guint64 index_offset; |
|
140 guint current_entry; |
|
141 guint reverse_start_index; |
|
142 guint reverse_stop_index; |
|
143 |
|
144 /* streams */ |
|
145 guint num_streams; |
|
146 guint num_v_streams; |
|
147 guint num_a_streams; |
|
148 guint num_t_streams; /* subtitle text streams */ |
|
149 |
|
150 avi_stream_context stream[GST_AVI_DEMUX_MAX_STREAMS]; |
|
151 |
|
152 /* for streaming mode */ |
|
153 gboolean streaming; |
|
154 gboolean have_eos; |
|
155 GstAdapter *adapter; |
|
156 |
|
157 /* some stream info for length */ |
|
158 gst_riff_avih *avih; |
|
159 |
|
160 /* segment in TIME */ |
|
161 GstSegment segment; |
|
162 gboolean segment_running; |
|
163 |
|
164 /* pending tags/events */ |
|
165 GstEvent *seek_event; |
|
166 GstTagList *globaltags; |
|
167 gboolean got_tags; |
|
168 |
|
169 } GstAviDemux; |
|
170 |
|
171 typedef struct _GstAviDemuxClass { |
|
172 GstElementClass parent_class; |
|
173 } GstAviDemuxClass; |
|
174 |
|
175 GType gst_avi_demux_get_type (void); |
|
176 |
|
177 G_END_DECLS |
|
178 |
|
179 #endif /* __GST_AVI_DEMUX_H__ */ |