gstreamer/gst/mpegstream/gstdvddemux.h

/* GStreamer
 * Copyright (C) 2004 Martin Soto <martinsoto@users.sourceforge.net>
 *
 * 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 __DVD_DEMUX_H__
#define __DVD_DEMUX_H__


#include <gst/gst.h>
#include "gstmpegdemux.h"

G_BEGIN_DECLS

#define GST_TYPE_DVD_DEMUX \
  (gst_dvd_demux_get_type())
#define GST_DVD_DEMUX(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DVD_DEMUX,GstDVDDemux))
#define GST_DVD_DEMUX_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DVD_DEMUX,GstDVDDemuxClass))
#define GST_IS_DVD_DEMUX(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DVD_DEMUX))
#define GST_IS_DVD_DEMUX_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DVD_DEMUX))


/* Supported kinds of streams in addition to what mpegdemux already
   does. */
enum {
  GST_DVD_DEMUX_STREAM_SUBPICTURE = GST_MPEG_DEMUX_STREAM_LAST,
  GST_DVD_DEMUX_STREAM_LAST
};

/* Supported number of streams. */
#define GST_DVD_DEMUX_NUM_SUBPICTURE_STREAMS    32
#define GST_DVD_DEMUX_MAX_SUBPICTURE_DELAY 0

typedef struct _GstDVDLPCMStream GstDVDLPCMStream ;
typedef struct _GstDVDDemux GstDVDDemux;
typedef struct _GstDVDDemuxClass GstDVDDemuxClass;


/* Additional recognized audio types. */
enum {
  GST_DVD_DEMUX_AUDIO_LPCM = GST_MPEG_DEMUX_AUDIO_LAST,
  GST_DVD_DEMUX_AUDIO_AC3,
  GST_DVD_DEMUX_AUDIO_DTS,
  GST_DVD_DEMUX_AUDIO_LAST
};


/* The recognized subpicture types. */
enum {
  GST_DVD_DEMUX_SUBP_UNKNOWN =
    GST_MPEG_DEMUX_STREAM_TYPE (GST_DVD_DEMUX_STREAM_SUBPICTURE, 1),
  GST_DVD_DEMUX_SUBP_DVD,
  GST_DVD_DEMUX_SUBP_LAST
};


/* Extended structure to hold additional information for linear PCM
   streams. */
struct _GstDVDLPCMStream {
  GstMPEGStream  parent;
  guint32        sample_info;   /* The type of linear PCM samples
                                   associated to this stream. The
                                   values are bit fields with the same
                                   format of the sample_info field in
                                   the linear PCM header. */
  gint rate, channels, width,
    dynamic_range;
  gboolean mute, emphasis;
};


struct _GstDVDDemux {
  GstMPEGDemux   parent;

  GstPad *cur_video;            /* Current video stream pad. */
  GstPad *cur_audio;            /* Current audio stream pad. */
  GstPad *cur_subpicture;       /* Current subpicture stream pad. */

  gint cur_video_nr;            /* Current video stream number. */
  gint cur_audio_nr;            /* Current audio stream number. */
  gint cur_subpicture_nr;       /* Current subpicture stream number. */

  gint mpeg_version;            /* Version of the MPEG video stream */

  GstMPEGStream *subpicture_stream[GST_DVD_DEMUX_NUM_SUBPICTURE_STREAMS];
                                /* Subpicture output streams. */

  gboolean segment_filter;	/* If TRUE, the demuxer refrains from
				   sending any audio packets until it
				   sees one with a timestamp lying
				   inside the current segment. */

  GstEvent *langcodes;
};


struct _GstDVDDemuxClass {
  GstMPEGDemuxClass parent_class;

  GstPadTemplate *cur_video_template;
  GstPadTemplate *cur_audio_template;
  GstPadTemplate *subpicture_template;
  GstPadTemplate *cur_subpicture_template;

  GstMPEGStream *
                (*get_subpicture_stream)(GstMPEGDemux *mpeg_demux,
                                         guint8 stream_nr,
                                         gint type,
                                         const gpointer info);
};


GType           gst_dvd_demux_get_type          (void);

gboolean        gst_dvd_demux_plugin_init       (GstPlugin *plugin);

G_END_DECLS

#endif /* __DVD_DEMUX_H__ */