gstreamer/gst/gstvalue.h
Benjamin Otte 614b4d1627 gst/gstcaps.c: check for ANY caps before appending/unioning
Original commit message from CVS:
* gst/gstcaps.c: (gst_caps_append), (gst_caps_union):
check for ANY caps before appending/unioning
* gst/gstcaps.c: (gst_caps_is_subset),
(gst_caps_is_equal), (gst_caps_structure_subtract_field),
(gst_caps_structure_subtract), (gst_caps_subtract):
* gst/gstcaps.h:
add gst_caps_is_equal, gst_caps_is_subset and gst_caps_subtract to
the API. deprecate gst_caps_is_equal_fixed
* gst/gstpad.c: (gst_pad_try_set_caps):
* gst/gstqueue.c: (gst_queue_link):
s/gst_caps_is_equal_fixed/gst_caps_is_equal/
* gst/gststructure.c: (gst_structure_get_name_id):
* gst/gststructure.h:
add function gst_structure_get_name_id
* gst/gstvalue.c: (gst_value_subtract_int_int_range),
(gst_value_create_new_range), (gst_value_subtract_int_range_int),
(gst_value_subtract_int_range_int_range),
(gst_value_subtract_double_double_range),
(gst_value_subtract_double_range_double),
(gst_value_subtract_double_range_double_range),
(gst_value_subtract_from_list), (gst_value_subtract_list),
(gst_value_can_intersect), (gst_value_subtract),
(gst_value_can_subtract), (gst_value_register_subtract_func),
(_gst_value_initialize):
* gst/gstvalue.h:
add support for subtracting values from each other. Note that
subtracting means subtracting as in set theory. Required for caps
stuff above.
* testsuite/caps/.cvsignore:
* testsuite/caps/Makefile.am:
* testsuite/caps/erathostenes.c: (erathostenes), (main):
* testsuite/caps/sets.c: (check_caps), (main):
* testsuite/caps/subtract.c: (check_caps), (main):
add tests for subtraction and equality code.
2004-04-21 03:25:13 +00:00

174 lines
7.3 KiB
C

/* GStreamer
* Copyright (C) <2003> David A. Schleef <ds@schleef.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_VALUE_H__
#define __GST_VALUE_H__
#include <gst/gstconfig.h>
#include <gst/gstcaps.h>
G_BEGIN_DECLS
#define GST_MAKE_FOURCC(a,b,c,d) (guint32)((a)|(b)<<8|(c)<<16|(d)<<24)
#define GST_STR_FOURCC(f) (guint32)(((f)[0])|((f)[1]<<8)|((f)[2]<<16)|((f)[3]<<24))
#define GST_FOURCC_FORMAT "%c%c%c%c"
#define GST_FOURCC_ARGS(fourcc) \
((gchar) ((fourcc) &0xff)), \
((gchar) (((fourcc)>>8 )&0xff)), \
((gchar) (((fourcc)>>16)&0xff)), \
((gchar) (((fourcc)>>24)&0xff))
#define GST_VALUE_HOLDS_FOURCC(x) (G_VALUE_HOLDS(x, gst_type_fourcc))
#define GST_VALUE_HOLDS_INT_RANGE(x) (G_VALUE_HOLDS(x, gst_type_int_range))
#define GST_VALUE_HOLDS_DOUBLE_RANGE(x) (G_VALUE_HOLDS(x, gst_type_double_range))
#define GST_VALUE_HOLDS_LIST(x) (G_VALUE_HOLDS(x, gst_type_list))
#define GST_VALUE_HOLDS_CAPS(x) (G_VALUE_HOLDS(x, GST_TYPE_CAPS))
#define GST_TYPE_FOURCC gst_type_fourcc
#define GST_TYPE_INT_RANGE gst_type_int_range
#define GST_TYPE_DOUBLE_RANGE gst_type_double_range
#define GST_TYPE_LIST gst_type_list
#define GST_VALUE_LESS_THAN (-1)
#define GST_VALUE_EQUAL 0
#define GST_VALUE_GREATER_THAN 1
#define GST_VALUE_UNORDERED 2
typedef int (* GstValueCompareFunc) (const GValue *value1,
const GValue *value2);
typedef char * (* GstValueSerializeFunc) (const GValue *value1);
typedef gboolean (* GstValueDeserializeFunc) (GValue *dest,
const char *s);
typedef int (* GstValueUnionFunc) (GValue *dest,
const GValue *value1,
const GValue *value2);
typedef int (* GstValueIntersectFunc) (GValue *dest,
const GValue *value1,
const GValue *value2);
typedef int (* GstValueSubtractFunc) (GValue *dest,
const GValue *minuend,
const GValue *subtrahend);
typedef struct _GstValueTable GstValueTable;
struct _GstValueTable {
GType type;
GstValueCompareFunc compare;
GstValueSerializeFunc serialize;
GstValueDeserializeFunc deserialize;
void *_gst_reserved [GST_PADDING];
};
extern GType gst_type_fourcc;
extern GType gst_type_int_range;
extern GType gst_type_double_range;
extern GType gst_type_list;
void gst_value_register (const GstValueTable *table);
void gst_value_init_and_copy (GValue *dest,
const GValue *src);
gchar * gst_value_serialize (const GValue *value);
gboolean gst_value_deserialize (GValue *dest,
const gchar *src);
/* list */
void gst_value_list_append_value (GValue *value,
const GValue *append_value);
void gst_value_list_prepend_value (GValue *value,
const GValue *prepend_value);
void gst_value_list_concat (GValue *dest,
const GValue *value1,
const GValue *value2);
guint gst_value_list_get_size (const GValue *value);
G_CONST_RETURN GValue * gst_value_list_get_value (const GValue *value,
guint index);
/* fourcc */
void gst_value_set_fourcc (GValue *value,
guint32 fourcc);
guint32 gst_value_get_fourcc (const GValue *value);
/* int range */
void gst_value_set_int_range (GValue *value,
int start,
int end);
int gst_value_get_int_range_min (const GValue *value);
int gst_value_get_int_range_max (const GValue *value);
/* double range */
void gst_value_set_double_range (GValue *value,
double start,
double end);
double gst_value_get_double_range_min (const GValue *value);
double gst_value_get_double_range_max (const GValue *value);
/* caps */
G_CONST_RETURN GstCaps * gst_value_get_caps (const GValue *value);
void gst_value_set_caps (GValue *value,
const GstCaps *caps);
/* compare */
int gst_value_compare (const GValue *value1,
const GValue *value2);
gboolean gst_value_can_compare (const GValue *value1,
const GValue *value2);
/* union */
gboolean gst_value_union (GValue *dest,
const GValue *value1,
const GValue *value2);
gboolean gst_value_can_union (const GValue *value1,
const GValue *value2);
void gst_value_register_union_func (GType type1,
GType type2,
GstValueUnionFunc func);
/* intersection */
gboolean gst_value_intersect (GValue *dest,
const GValue *value1,
const GValue *value2);
gboolean gst_value_can_intersect (const GValue *value1,
const GValue *value2);
void gst_value_register_intersect_func (GType type1,
GType type2,
GstValueIntersectFunc func);
/* subtraction */
gboolean gst_value_subtract (GValue *dest,
const GValue *minuend,
const GValue *subtrahend);
gboolean gst_value_can_subtract (const GValue *minuend,
const GValue *subtrahend);
void gst_value_register_subtract_func (GType minuend_type,
GType dubtrahend_type,
GstValueSubtractFunc func);
/* fixation */
gboolean gst_type_is_fixed (GType type);
/* private */
void _gst_value_initialize (void);
G_END_DECLS
#endif