1 /* GStreamer wavpack plugin
2 * (c) 2005 Arwed v. Merkatz <v.merkatz@gmx.net>
4 * gstwavpackparse.h: wavpack file parser
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
22 #ifndef __GST_WAVPACK_PARSE_H__
23 #define __GST_WAVPACK_PARSE_H__
26 #include <gst/base/gstadapter.h>
30 /* #define's don't like whitespacey bits */
31 #define GST_TYPE_WAVPACK_PARSE \
32 (gst_wavpack_parse_get_type())
33 #define GST_WAVPACK_PARSE(obj) \
34 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAVPACK_PARSE,GstWavpackParse))
35 #define GST_WAVPACK_PARSE_CLASS(klass) \
36 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAVPACK_PARSE,GstWavpackParseClass))
37 #define GST_IS_WAVPACK_PARSE(obj) \
38 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAVPACK_PARSE))
39 #define GST_IS_WAVPACK_PARSE_CLASS(klass) \
40 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAVPACK_PARSE))
42 typedef struct _GstWavpackParse GstWavpackParse;
43 typedef struct _GstWavpackParseClass GstWavpackParseClass;
44 typedef struct _GstWavpackParseIndexEntry GstWavpackParseIndexEntry;
46 struct _GstWavpackParseIndexEntry {
47 gint64 byte_offset; /* byte offset of this chunk */
48 gint64 sample_offset; /* first sample in this chunk */
49 gint64 sample_offset_end; /* first sample in next chunk */
52 struct _GstWavpackParse
63 gboolean need_newsegment;
65 gint64 current_offset; /* byte offset on sink pad */
66 gint64 upstream_length; /* length of file in bytes */
68 GstSegment segment; /* the currently configured segment, in
69 * samples/audio frames (DEFAULT format) */
71 GstAdapter *adapter; /* when operating chain-based, otherwise NULL */
73 /* Array of GstWavpackParseIndexEntry structs, mapping known
74 * sample offsets to byte offsets. Is kept increasing without
75 * gaps (ie. append only and consecutive entries must always
76 * map to consecutive chunks in the file). */
79 /* Queued events (e.g. tag events we receive before we create the src pad) */
80 GList *queued_events; /* STREAM_LOCK */
83 struct _GstWavpackParseClass
85 GstElementClass parent;
88 GType gst_wavpack_parse_get_type (void);
90 gboolean gst_wavpack_parse_plugin_init (GstPlugin *plugin);
94 #endif /* __GST_WAVPACK_PARSE_H__ */