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86 lines
3.1 KiB
C
86 lines
3.1 KiB
C
/* GStreamer
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* Copyright (C) <2003> David A. Schleef <ds@schleef.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_VALUE_H__
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#define __GST_VALUE_H__
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#include <gst/gstconfig.h>
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G_BEGIN_DECLS
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typedef int (* GstValueCompareFunc) (const GValue *value1,
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const GValue *value2);
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typedef int (* GstValueUnionFunc) (GValue *dest, const GValue *value1,
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const GValue *value2);
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typedef int (* GstValueIntersectFunc) (GValue *dest, const GValue *value1,
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const GValue *value2);
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#define GST_MAKE_FOURCC(a,b,c,d) (guint32)((a)|(b)<<8|(c)<<16|(d)<<24)
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#define GST_STR_FOURCC(f) (guint32)(((f)[0])|((f)[1]<<8)|((f)[2]<<16)|((f)[3]<<24))
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#define GST_FOURCC_FORMAT "%c%c%c%c"
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#define GST_FOURCC_ARGS(fourcc) \
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((gchar) ((fourcc) &0xff)), \
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((gchar) (((fourcc)>>8 )&0xff)), \
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((gchar) (((fourcc)>>16)&0xff)), \
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((gchar) (((fourcc)>>24)&0xff))
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#define GST_VALUE_HOLDS_FOURCC(x) (G_VALUE_TYPE(x) == gst_type_fourcc)
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#define GST_VALUE_HOLDS_INT_RANGE(x) (G_VALUE_TYPE(x) == gst_type_int_range)
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#define GST_VALUE_HOLDS_DOUBLE_RANGE(x) (G_VALUE_TYPE(x) == gst_type_double_range)
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#define GST_VALUE_HOLDS_CAPS(x) TRUE /* FIXME */
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#define GST_TYPE_FOURCC gst_type_fourcc
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#define GST_TYPE_INT_RANGE gst_type_int_range
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#define GST_TYPE_DOUBLE_RANGE gst_type_double_range
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#define GST_VALUE_LESS_THAN (-1)
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#define GST_VALUE_EQUAL 0
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#define GST_VALUE_GREATER_THAN 1
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#define GST_VALUE_UNORDERED 2
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extern GType gst_type_fourcc;
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extern GType gst_type_int_range;
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extern GType gst_type_double_range;
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void gst_value_set_fourcc (GValue *value, guint32 fourcc);
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guint32 gst_value_get_fourcc (const GValue *value);
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void gst_value_set_int_range (GValue *value, int start, int end);
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int gst_value_get_int_range_min (const GValue *value);
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int gst_value_get_int_range_max (const GValue *value);
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void gst_value_set_double_range (GValue *value, double start, double end);
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double gst_value_get_double_range_min (const GValue *value);
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double gst_value_get_double_range_max (const GValue *value);
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const GstCaps2 *gst_value_get_caps (const GValue *value);
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void gst_value_set_caps (GValue *calue, const GstCaps2 *caps);
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void _gst_value_initialize (void);
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int gst_value_compare (const GValue *src1, const GValue *src2);
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gboolean gst_value_intersect (GValue *dest, const GValue *src1, const GValue *src2);
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gboolean gst_value_union (GValue *dest, const GValue *src1, const GValue *src2);
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G_END_DECLS
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#endif
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