<commit_before>/* GStreamer
 * Copyright (C) 1999,2000 <NAME> <<EMAIL>>
 *                    2000 <NAME> <<EMAIL>>
 *
 * gstevent.h: Header for GstEvent subsystem
 *
 * 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_EVENT_H__
#define __GST_EVENT_H__

#include <gst/gsttypes.h>
#include <gst/gstdata.h>
#include <gst/gstformat.h>
#include <gst/gstobject.h>
#include <gst/gstcaps.h>

G_BEGIN_DECLS

typedef enum {
  GST_EVENT_UNKNOWN		= 0,
  GST_EVENT_EOS			= 1,
  GST_EVENT_FLUSH		= 2,
  GST_EVENT_EMPTY		= 3,
  GST_EVENT_DISCONTINUOUS	= 4,
  /*GST_EVENT_NEW_MEDIA		= 5, <- removed */
  GST_EVENT_QOS			= 6,
  GST_EVENT_SEEK		= 7,
  GST_EVENT_SEEK_SEGMENT	= 8,
  GST_EVENT_SEGMENT_DONE	= 9,
  GST_EVENT_SIZE		= 10,
  GST_EVENT_RATE		= 11,
  GST_EVENT_FILLER		= 12,
  GST_EVENT_TS_OFFSET		= 13,
  GST_EVENT_INTERRUPT		= 14,
  GST_EVENT_NAVIGATION		= 15
} GstEventType;

extern GType _gst_event_type;

#define GST_EVENT_TRACE_NAME	"GstEvent"

#define GST_TYPE_EVENT		(_gst_event_type)
#define GST_EVENT(event)	((GstEvent*)(event))
#define GST_IS_EVENT(event)	(GST_DATA_TYPE(event) == GST_TYPE_EVENT)

#define GST_EVENT_TYPE(event)		(GST_EVENT(event)->type)
#define GST_EVENT_TIMESTAMP(event)	(GST_EVENT(event)->timestamp)
#define GST_EVENT_SRC(event)		(GST_EVENT(event)->src)

#define GST_EVENT_IS_INTERRUPT(event) (GST_EVENT_TYPE (event) == GST_EVENT_INTERRUPT)

#define GST_SEEK_FORMAT_SHIFT	0
#define GST_SEEK_METHOD_SHIFT	16
#define GST_SEEK_FLAGS_SHIFT	20
#define GST_SEEK_FORMAT_MASK	0x0000ffff
#define GST_SEEK_METHOD_MASK	0x000f0000
#define GST_SEEK_FLAGS_MASK	0xfff00000

typedef enum {
  GST_EVENT_FLAG_NONE 		= 0,

  /* indicates negative rates are supported */
  GST_RATE_FLAG_NEGATIVE  	= (1 << 1) 
} GstEventFlag;

typedef struct
{
  GstEventType 	type;
  GstEventFlag 	flags;
} GstEventMask;

#ifdef G_HAVE_ISO_VARARGS
#define GST_EVENT_MASK_FUNCTION(type,functionname, ...)      \
static const GstEventMask*                              \
functionname (type pad)                            	\
{                                               	\
  static const GstEventMask masks[] = {                 \
    __VA_ARGS__,					\
    { 0, }						\
  };                                             	\
  return masks;                                  	\
}
#elif defined(G_HAVE_GNUC_VARARGS)
#define GST_EVENT_MASK_FUNCTION(type,functionname, a...)     \
static const GstEventMask*                              \
functionname (type pad)                            	\
{                                               	\
  static const GstEventMask masks[] = {                 \
    a,							\
    { 0, }						\
  };                                             	\
  return masks;                                  	\
}
#endif

/* seek events, extends GstEventFlag */
typedef enum {
  /* | with some format */
  /* | with one of these */
  GST_SEEK_METHOD_CUR		= (1 << (GST_SEEK_METHOD_SHIFT + 0)),
  GST_SEEK_METHOD_SET		= (1 << (GST_SEEK_METHOD_SHIFT + 1)),
  GST_SEEK_METHOD_END		= (1 << (GST_SEEK_METHOD_SHIFT + 2)),

  /* | with optional seek flags */
  /* seek flags */
  GST_SEEK_FLAG_FLUSH		= (1 << (GST_SEEK_FLAGS_SHIFT + 0)),
  GST_SEEK_FLAG_ACCURATE	= (1 << (GST_SEEK_FLAGS_SHIFT + 1)),
  GST_SEEK_FLAG_KEY_UNIT	= (1 << (GST_SEEK_FLAGS_SHIFT + 2)),
  GST_SEEK_FLAG_SEGMENT_LOOP	= (1 << (GST_SEEK_FLAGS_SHIFT + 3))
	
} GstSeekType;

typedef enum {
  GST_SEEK_CERTAIN,
  GST_SEEK_FUZZY
} GstSeekAccuracy;

typedef struct
{
  GstFormat 	format;
  gint64	value;
} GstFormatValue;

#define GST_EVENT_SEEK_TYPE(event)		(GST_EVENT(event)->event_data.seek.type)
#define GST_EVENT_SEEK_FORMAT(event)		(GST_EVENT_SEEK_TYPE(event) & GST_SEEK_FORMAT_MASK)
#define GST_EVENT_SEEK_METHOD(event)		(GST_EVENT_SEEK_TYPE(event) & GST_SEEK_METHOD_MASK)
#define GST_EVENT_SEEK_FLAGS(event)		(GST_EVENT_SEEK_TYPE(event) & GST_SEEK_FLAGS_MASK)
#define GST_EVENT_SEEK_OFFSET(event)		(GST_EVENT(event)->event_data.seek.offset)
#define GST_EVENT_SEEK_ENDOFFSET(event)		(GST_EVENT(event)->event_data.seek.endoffset)
#define GST_EVENT_SEEK_ACCURACY(event)		(GST_EVENT(event)->event_data.seek.accuracy)

#define GST_EVENT_DISCONT_NEW_MEDIA(event)	(GST_EVENT(event)->event_data.discont.new_media)
#define GST_EVENT_DISCONT_OFFSET(event,i)	(GST_EVENT(event)->event_data.discont.offsets[i])
#define GST_EVENT_DISCONT_OFFSET_LEN(event)	(GST_EVENT(event)->event_data.discont.noffsets)

#define GST_EVENT_SIZE_FORMAT(event)		(GST_EVENT(event)->event_data.size.format)
#define GST_EVENT_SIZE_VALUE(event)		(GST_EVENT(event)->event_data.size.value)

#define GST_EVENT_RATE_VALUE(event)		(GST_EVENT(event)->event_data.rate.value)

struct _GstEvent {
  GstData data;

  GstEventType  type;
  guint64	timestamp;
  GstObject	*src;

  union {
    struct {
      GstSeekType 	type;
      gint64      	offset;
      gint64      	endoffset;
      GstSeekAccuracy 	accuracy;
    } seek;
    struct {
      GstFormatValue 	offsets[8];
      gint      	noffsets;
      gboolean		new_media;
    } discont;
    struct {
      GstFormat 	format;
      gint64      	value;
    } size;
    struct {
      gdouble      	value;
    } rate;
    struct {
      GstCaps		*caps;
    } caps;
  } event_data;

  GST_STRUCT_PADDING
};
<commit_msg>change navigation from caps to structure<commit_after>/* GStreamer
 * Copyright (C) 1999,2000 <NAME> <<EMAIL>>
 *                    2000 <NAME> <<EMAIL>>
 *
 * gstevent.h: Header for GstEvent subsystem
 *
 * 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_EVENT_H__
#define __GST_EVENT_H__

#include <gst/gsttypes.h>
#include <gst/gstdata.h>
#include <gst/gstformat.h>
#include <gst/gstobject.h>
#include <gst/gststructure.h>

G_BEGIN_DECLS

typedef enum {
  GST_EVENT_UNKNOWN		= 0,
  GST_EVENT_EOS			= 1,
  GST_EVENT_FLUSH		= 2,
  GST_EVENT_EMPTY		= 3,
  GST_EVENT_DISCONTINUOUS	= 4,
  /*GST_EVENT_NEW_MEDIA		= 5, <- removed */
  GST_EVENT_QOS			= 6,
  GST_EVENT_SEEK		= 7,
  GST_EVENT_SEEK_SEGMENT	= 8,
  GST_EVENT_SEGMENT_DONE	= 9,
  GST_EVENT_SIZE		= 10,
  GST_EVENT_RATE		= 11,
  GST_EVENT_FILLER		= 12,
  GST_EVENT_TS_OFFSET		= 13,
  GST_EVENT_INTERRUPT		= 14,
  GST_EVENT_NAVIGATION		= 15
} GstEventType;

extern GType _gst_event_type;

#define GST_EVENT_TRACE_NAME	"GstEvent"

#define GST_TYPE_EVENT		(_gst_event_type)
#define GST_EVENT(event)	((GstEvent*)(event))
#define GST_IS_EVENT(event)	(GST_DATA_TYPE(event) == GST_TYPE_EVENT)

#define GST_EVENT_TYPE(event)		(GST_EVENT(event)->type)
#define GST_EVENT_TIMESTAMP(event)	(GST_EVENT(event)->timestamp)
#define GST_EVENT_SRC(event)		(GST_EVENT(event)->src)

#define GST_EVENT_IS_INTERRUPT(event) (GST_EVENT_TYPE (event) == GST_EVENT_INTERRUPT)

#define GST_SEEK_FORMAT_SHIFT	0
#define GST_SEEK_METHOD_SHIFT	16
#define GST_SEEK_FLAGS_SHIFT	20
#define GST_SEEK_FORMAT_MASK	0x0000ffff
#define GST_SEEK_METHOD_MASK	0x000f0000
#define GST_SEEK_FLAGS_MASK	0xfff00000

typedef enum {
  GST_EVENT_FLAG_NONE 		= 0,

  /* indicates negative rates are supported */
  GST_RATE_FLAG_NEGATIVE  	= (1 << 1) 
} GstEventFlag;

typedef struct
{
  GstEventType 	type;
  GstEventFlag 	flags;
} GstEventMask;

#ifdef G_HAVE_ISO_VARARGS
#define GST_EVENT_MASK_FUNCTION(type,functionname, ...)      \
static const GstEventMask*                              \
functionname (type pad)                            	\
{                                               	\
  static const GstEventMask masks[] = {                 \
    __VA_ARGS__,					\
    { 0, }						\
  };                                             	\
  return masks;                                  	\
}
#elif defined(G_HAVE_GNUC_VARARGS)
#define GST_EVENT_MASK_FUNCTION(type,functionname, a...)     \
static const GstEventMask*                              \
functionname (type pad)                            	\
{                                               	\
  static const GstEventMask masks[] = {                 \
    a,							\
    { 0, }						\
  };                                             	\
  return masks;                                  	\
}
#endif

/* seek events, extends GstEventFlag */
typedef enum {
  /* | with some format */
  /* | with one of these */
  GST_SEEK_METHOD_CUR		= (1 << (GST_SEEK_METHOD_SHIFT + 0)),
  GST_SEEK_METHOD_SET		= (1 << (GST_SEEK_METHOD_SHIFT + 1)),
  GST_SEEK_METHOD_END		= (1 << (GST_SEEK_METHOD_SHIFT + 2)),

  /* | with optional seek flags */
  /* seek flags */
  GST_SEEK_FLAG_FLUSH		= (1 << (GST_SEEK_FLAGS_SHIFT + 0)),
  GST_SEEK_FLAG_ACCURATE	= (1 << (GST_SEEK_FLAGS_SHIFT + 1)),
  GST_SEEK_FLAG_KEY_UNIT	= (1 << (GST_SEEK_FLAGS_SHIFT + 2)),
  GST_SEEK_FLAG_SEGMENT_LOOP	= (1 << (GST_SEEK_FLAGS_SHIFT + 3))
	
} GstSeekType;

typedef enum {
  GST_SEEK_CERTAIN,
  GST_SEEK_FUZZY
} GstSeekAccuracy;

typedef struct
{
  GstFormat 	format;
  gint64	value;
} GstFormatValue;

#define GST_EVENT_SEEK_TYPE(event)		(GST_EVENT(event)->event_data.seek.type)
#define GST_EVENT_SEEK_FORMAT(event)		(GST_EVENT_SEEK_TYPE(event) & GST_SEEK_FORMAT_MASK)
#define GST_EVENT_SEEK_METHOD(event)		(GST_EVENT_SEEK_TYPE(event) & GST_SEEK_METHOD_MASK)
#define GST_EVENT_SEEK_FLAGS(event)		(GST_EVENT_SEEK_TYPE(event) & GST_SEEK_FLAGS_MASK)
#define GST_EVENT_SEEK_OFFSET(event)		(GST_EVENT(event)->event_data.seek.offset)
#define GST_EVENT_SEEK_ENDOFFSET(event)		(GST_EVENT(event)->event_data.seek.endoffset)
#define GST_EVENT_SEEK_ACCURACY(event)		(GST_EVENT(event)->event_data.seek.accuracy)

#define GST_EVENT_DISCONT_NEW_MEDIA(event)	(GST_EVENT(event)->event_data.discont.new_media)
#define GST_EVENT_DISCONT_OFFSET(event,i)	(GST_EVENT(event)->event_data.discont.offsets[i])
#define GST_EVENT_DISCONT_OFFSET_LEN(event)	(GST_EVENT(event)->event_data.discont.noffsets)

#define GST_EVENT_SIZE_FORMAT(event)		(GST_EVENT(event)->event_data.size.format)
#define GST_EVENT_SIZE_VALUE(event)		(GST_EVENT(event)->event_data.size.value)

#define GST_EVENT_RATE_VALUE(event)		(GST_EVENT(event)->event_data.rate.value)

struct _GstEvent {
  GstData data;

  GstEventType  type;
  guint64	timestamp;
  GstObject	*src;

  union {
    struct {
      GstSeekType 	type;
      gint64      	offset;
      gint64      	endoffset;
      GstSeekAccuracy 	accuracy;
    } seek;
    struct {
      GstFormatValue 	offsets[8];
      gint      	noffsets;
      gboolean		new_media;
    } discont;
    struct {
      GstFormat 	format;
      gint64      	value;
    } size;
    struct {
      gdouble      	value;
    } rate;
    struct {
      GstStructure	*structure;
    } structure;
  } event_data;

  GST_STRUCT_PADDING
};

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