gstreamer/gst-libs/gst/riff/riff-read.h

/* GStreamer RIFF I/O
 * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
 *
 * riff-read.h: function declarations for parsing a RIFF file
 *
 * 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_RIFF_READ_H__
#define __GST_RIFF_READ_H__

#include <glib.h>
#include <gst/gst.h>
#include <gst/bytestream/bytestream.h>

G_BEGIN_DECLS
#define GST_TYPE_RIFF_READ \
  (gst_riff_read_get_type ())
#define GST_RIFF_READ(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_RIFF_READ, GstRiffRead))
#define GST_RIFF_READ_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_RIFF_READ, GstRiffReadClass))
#define GST_IS_RIFF_READ(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_RIFF_READ))
#define GST_IS_RIFF_READ_CLASS(obj) \
  (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_RIFF_READ))
#define GST_RIFF_READ_GET_CLASS(obj) \
  (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_RIFF_READ, GstRiffReadClass))
    typedef struct _GstRiffLevel
{
  guint64 start, length;
} GstRiffLevel;

typedef struct _GstRiffRead
{
  GstElement parent;

  GstPad *sinkpad;
  GstByteStream *bs;

  GList *level;
} GstRiffRead;

typedef struct _GstRiffReadClass
{
  GstElementClass parent;
} GstRiffReadClass;

GType gst_riff_read_get_type (void);

guint32 gst_riff_peek_tag (GstRiffRead * riff, guint * level_up);
guint32 gst_riff_peek_list (GstRiffRead * riff);

GstEvent *gst_riff_read_seek (GstRiffRead * riff, guint64 offset);
gboolean gst_riff_read_skip (GstRiffRead * riff);
gboolean gst_riff_read_data (GstRiffRead * riff,
    guint32 * tag, GstBuffer ** buf);
gboolean gst_riff_read_ascii (GstRiffRead * riff, guint32 * tag, gchar ** str);
gboolean gst_riff_read_list (GstRiffRead * riff, guint32 * tag);
gboolean gst_riff_read_header (GstRiffRead * read, guint32 * doctype);

/*
 * Utility functions (including byteswapping).
 */
gboolean gst_riff_read_strh (GstRiffRead * riff, gst_riff_strh ** header);
gboolean gst_riff_read_strf_vids (GstRiffRead * riff,
    gst_riff_strf_vids ** header);
gboolean gst_riff_read_strf_auds (GstRiffRead * riff,
    gst_riff_strf_auds ** header);
gboolean gst_riff_read_strf_iavs (GstRiffRead * riff,
    gst_riff_strf_iavs ** header);
gboolean gst_riff_read_info (GstRiffRead * riff);

G_END_DECLS
#endif /* __GST_RIFF_READ_H__ */