gstreamer/gst/gstcaps.h

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/* 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_CAPS_H__
#define __GST_CAPS_H__
#include <gst/gstconfig.h>
#include <gst/gststructure.h>
G_BEGIN_DECLS
#define GST_CAPS_FLAGS_ANY (1<<0)
extern GType _gst_caps_type;
typedef struct _GstCaps GstCaps;
typedef struct _GstStaticCaps GstStaticCaps;
struct _GstCaps {
GType type;
guint16 flags;
GPtrArray *structs;
};
struct _GstStaticCaps {
GstCaps caps;
const char *string;
};
#define GST_STATIC_CAPS(string) \
{ \
/* caps */ { 0 }, \
/* string */ string, \
}
#define GST_CAPS_ANY gst_caps_new_any()
#define GST_CAPS_NONE gst_caps_new_empty()
#define GST_STATIC_CAPS_ANY GST_STATIC_CAPS("ANY")
#define GST_STATIC_CAPS_NONE GST_STATIC_CAPS("NONE")
#define GST_TYPE_CAPS gst_caps_get_type()
/* FIXME Company should decide the best way to do this */
#define GST_DEBUG_CAPS(string, caps) do { \
char *s = gst_caps_to_string(caps); \
GST_DEBUG ( "%s: %s", (string), s); \
g_free(s); \
}while(0)
void _gst_caps_initialize (void);
GType gst_caps_get_type (void);
/* creation/deletion */
GstCaps *gst_caps_new_empty (void);
GstCaps *gst_caps_new_any (void);
GstCaps *gst_caps_new_simple (const char *media_type, const char *fieldname, ...);
GstCaps *gst_caps_new_full (GstStructure *struct1, ...);
GstCaps *gst_caps_new_full_valist (GstStructure *structure, va_list var_args);
GstCaps *gst_caps_copy (const GstCaps *caps);
void gst_caps_free (GstCaps *caps);
G_CONST_RETURN GstCaps *gst_static_caps_get (GstStaticCaps *caps);
/* manipulation */
void gst_caps_append (GstCaps *caps1, GstCaps *caps2);
void gst_caps_append_structure (GstCaps *caps1, GstStructure *structure);
GstCaps *gst_caps_split_one (GstCaps *caps);
int gst_caps_get_size (const GstCaps *caps);
GstStructure *gst_caps_get_structure (const GstCaps *caps, int index);
GstCaps *gst_caps_copy_1 (const GstCaps *caps);
void gst_caps_set_simple (GstCaps *caps, char *field, ...);
void gst_caps_set_simple_valist (GstCaps *caps, char *field, va_list varargs);
/* tests */
gboolean gst_caps_is_any (const GstCaps *caps);
gboolean gst_caps_is_empty (const GstCaps *caps);
gboolean gst_caps_is_chained (const GstCaps *caps);
gboolean gst_caps_is_fixed (const GstCaps *caps);
gboolean gst_caps_is_always_compatible (const GstCaps *caps1,
const GstCaps *caps2);
/* operations */
GstCaps *gst_caps_intersect (const GstCaps *caps1, const GstCaps *caps2);
GstCaps *gst_caps_union (const GstCaps *caps1, const GstCaps *caps2);
GstCaps *gst_caps_normalize (const GstCaps *caps);
#ifndef GST_DISABLE_LOADSAVE
xmlNodePtr gst_caps_save_thyself (const GstCaps *caps, xmlNodePtr parent);
GstCaps *gst_caps_load_thyself (xmlNodePtr parent);
#endif
/* utility */
void gst_caps_replace (GstCaps **caps, GstCaps *newcaps);
gchar *gst_caps_to_string (const GstCaps *caps);
GstCaps *gst_caps_from_string (const gchar *string);
gboolean gst_caps_structure_fixate_field_nearest_int (GstStructure *structure,
const char *field_name, int target);
gboolean gst_caps_structure_fixate_field_nearest_double (GstStructure
*structure, const char *field_name, double target);
G_END_DECLS
#endif /* __GST_CAPS_H__ */