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/* GStreamer wavpack plugin
* (c) 2005 Arwed v. Merkatz <v.merkatz@gmx.net>
*
* gstwavpackparse.h: wavpack file parser
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_WAVPACK_PARSE_H__
#define __GST_WAVPACK_PARSE_H__
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
G_BEGIN_DECLS
#define GST_TYPE_WAVPACK_PARSE \
(gst_wavpack_parse_get_type())
#define GST_WAVPACK_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAVPACK_PARSE,GstWavpackParse))
#define GST_WAVPACK_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAVPACK_PARSE,GstWavpackParseClass))
#define GST_IS_WAVPACK_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAVPACK_PARSE))
#define GST_IS_WAVPACK_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAVPACK_PARSE))
typedef struct _GstWavpackParse GstWavpackParse;
typedef struct _GstWavpackParseClass GstWavpackParseClass;
typedef struct _GstWavpackParseIndexEntry GstWavpackParseIndexEntry;
struct _GstWavpackParseIndexEntry
{
gint64 byte_offset; /* byte offset of this chunk */
gint64 sample_offset; /* first sample in this chunk */
gint64 sample_offset_end; /* first sample in next chunk */
};
struct _GstWavpackParse
{
GstElement element;
/*< private > */
GstPad *sinkpad;
GstPad *srcpad;
guint samplerate;
guint channels;
gint64 total_samples;
gboolean need_newsegment;
gboolean discont;
gint64 current_offset; /* byte offset on sink pad */
gint64 upstream_length; /* length of file in bytes */
GstSegment segment; /* the currently configured segment, in
* samples/audio frames (DEFAULT format) */
GstBuffer *pending_buffer;
gint32 pending_offset;
guint32 next_block_index;
GstAdapter *adapter; /* when operating chain-based, otherwise NULL */
/* List of GstWavpackParseIndexEntry structs, mapping known
* sample offsets to byte offsets. Is kept increasing without
* gaps (ie. append only and consecutive entries must always
* map to consecutive chunks in the file). */
GSList *entries;
/* Queued events (e.g. tag events we receive before we create the src pad) */
GList *queued_events; /* STREAM_LOCK */
};
struct _GstWavpackParseClass
{
GstElementClass parent;
};
GType gst_wavpack_parse_get_type (void);
gboolean gst_wavpack_parse_plugin_init (GstPlugin * plugin);
G_END_DECLS
#endif /* __GST_WAVPACK_PARSE_H__ */
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