gstreamer/gst/asfdemux/gstasfdemux.h

/* GStreamer
 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
 *
 * 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 __ASF_DEMUX_H__
#define __ASF_DEMUX_H__

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

G_BEGIN_DECLS
  
#define GST_TYPE_ASF_DEMUX \
  (gst_asf_demux_get_type())
#define GST_ASF_DEMUX(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ASF_DEMUX,GstASFDemux))
#define GST_ASF_DEMUX_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ASF_DEMUX,GstASFDemux))
#define GST_IS_ASF_DEMUX(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ASF_DEMUX))
#define GST_IS_ASF_DEMUX_CLASS(obj) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ASF_DEMUX))

typedef struct _GstASFDemux GstASFDemux;
typedef struct _GstASFDemuxClass GstASFDemuxClass;

struct _GstASFStreamContext {
  GstPad *pad;
  guint64 pts;
};


typedef struct
{
  GstPad  *pad;
  guint16 id;
  guint32 frag_offset;
  guint32 sequence;
  guint64 delay;
  GstBuffer *payload;
} asf_stream_context;

typedef enum {
  GST_ASF_DEMUX_STATE_HEADER,
  GST_ASF_DEMUX_STATE_DATA,
  GST_ASF_DEMUX_STATE_EOS
} GstAsfDemuxState;

struct _GstASFDemux {
  GstElement     element;

  /* pads */
  GstPad        *sinkpad;

  GstByteStream *bs;

  GstTagList *taglist;
  GstAsfDemuxState state;
  guint64 data_offset, num_packets, packet, data_size;
  guint64 seek_pending;
  gboolean seek_flush, seek_discont;

#define GST_ASF_DEMUX_NUM_VIDEO_PADS 16
#define GST_ASF_DEMUX_NUM_AUDIO_PADS 32
#define GST_ASF_DEMUX_NUM_STREAMS 23
#define GST_ASF_DEMUX_NUM_STREAM_IDS 127

  /* stream output pads */
  GstPad *video_pad[GST_ASF_DEMUX_NUM_VIDEO_PADS];
  gint64 video_PTS[GST_ASF_DEMUX_NUM_VIDEO_PADS];

  GstPad *audio_pad[GST_ASF_DEMUX_NUM_AUDIO_PADS];
  gint64 audio_PTS[GST_ASF_DEMUX_NUM_AUDIO_PADS];

  guint64  last_seek;
  gboolean restart;

  guint32 bitrate[GST_ASF_DEMUX_NUM_STREAM_IDS];

  /* Demuxing state */
  guint32 num_audio_streams;
  guint32 num_video_streams;
  guint32 num_streams;
  asf_stream_context stream[GST_ASF_DEMUX_NUM_STREAMS];

  guint32 packet_size;
  guint32 timestamp;
  guint64 play_time;

  guint64 preroll;
  guint64 pts;

  /* Descrambler settings */
  guint8  span;
  guint16 ds_packet_size;
  guint16 ds_chunk_size;
  guint16 ds_data_size;

};

struct _GstASFDemuxClass {
  GstElementClass parent_class;
};

GType gst_asf_demux_get_type (void);

G_END_DECLS

#endif /* __ASF_DEMUX_H__ */