/* OGG muxer plugin for GStreamer

 * Copyright (C) 2004 Wim Taymans <wim@fluendo.com>

 * Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot org>

 *

 * 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_OGG_MUX_H__

#define __GST_OGGEMUX_H__

#include <ogg/ogg.h>

#include <gst/gst.h>

G_BEGIN_DECLS

#define GST_TYPE_OGG_MUX (gst_ogg_mux_get_type())

#define GST_OGG_MUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OGG_MUX, GstOggMux))

#define GST_OGG_MUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OGG_MUX, GstOggMux))

#define GST_IS_OGG_MUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OGG_MUX))

#define GST_IS_OGG_MUX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OGG_MUX))

typedef struct _GstOggMux GstOggMux;

typedef struct _GstOggMuxClass GstOggMuxClass;

typedef enum

{

  GST_OGG_PAD_STATE_CONTROL = 0,

  GST_OGG_PAD_STATE_DATA = 1

}

GstOggPadState;

/* all information needed for one ogg stream */

typedef struct

{

  GstCollectData collect;       /* we extend the CollectData */

  /* These two buffers make a very simple queue - they enter as 'next_buffer'

   * and (usually) leave as 'buffer', except at EOS, when buffer will be NULL */

  GstBuffer *buffer;            /* the first waiting buffer for the pad */

  GstBuffer *next_buffer;       /* the second waiting buffer for the pad */

  gint serial;

  ogg_stream_state stream;

  gint64 packetno;              /* number of next packet */

  gint64 pageno;                /* number of next page */

  guint64 duration;             /* duration of current page */

  gboolean eos;

  gint64 offset;

  GstClockTime timestamp;       /* timestamp of the first packet on the next

                                 * page to be dequeued */

  GstClockTime timestamp_end;   /* end timestamp of last complete packet on

                                   the next page to be dequeued */

  GstClockTime gp_time;         /* time corresponding to the gp value of the

                                   last complete packet on the next page to be

                                   dequeued */

  GstOggPadState state;         /* state of the pad */

  GList *headers;

  GQueue *pagebuffers;          /* List of pages in buffers ready for pushing */

  gboolean new_page;            /* starting a new page */

  gboolean first_delta;         /* was the first packet in the page a delta */

  gboolean prev_delta;          /* was the previous buffer a delta frame */

}

GstOggPad;

struct _GstOggMux

{

  GstElement element;

  /* source pad */

  GstPad *srcpad;

  /* sinkpads */

  GstCollectPads *collect;

  /* number of pads which have not received EOS */

  gint active_pads;

  /* the pad we are currently using to fill a page */

  GstOggPad *pulling;

  /* next timestamp for the page */

  GstClockTime next_ts;

  /* Last timestamp actually output on src pad */

  GstClockTime last_ts;

  /* offset in stream */

  guint64 offset;

  /* need_headers */

  gboolean need_headers;

  guint64 max_delay;

  guint64 max_page_delay;

  GstOggPad *delta_pad;         /* when a delta frame is detected on a stream, we mark

                                   pages as delta frames up to the page that has the

                                   keyframe */

};

struct _GstOggMuxClass

{

  GstElementClass parent_class;

};

GType gst_ogg_mux_get_type (void);

G_END_DECLS

#endif /* __GST_OGG_MUX_H__ */