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/* GStreamer
* Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_ASM_RULES_H__
#define __GST_ASM_RULES_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define MAX_RULEMATCHES 16
typedef struct _GstASMNode GstASMNode;
typedef struct _GstASMRule GstASMRule;
typedef struct _GstASMRuleBook GstASMRuleBook;
typedef enum {
GST_ASM_TOKEN_NONE,
GST_ASM_TOKEN_EOF,
GST_ASM_TOKEN_INT,
GST_ASM_TOKEN_FLOAT,
GST_ASM_TOKEN_IDENTIFIER,
GST_ASM_TOKEN_STRING,
GST_ASM_TOKEN_HASH,
GST_ASM_TOKEN_SEMICOLON,
GST_ASM_TOKEN_COMMA,
GST_ASM_TOKEN_DOLLAR,
GST_ASM_TOKEN_LPAREN,
GST_ASM_TOKEN_RPAREN,
GST_ASM_TOKEN_GREATER,
GST_ASM_TOKEN_LESS,
GST_ASM_TOKEN_GREATEREQUAL,
GST_ASM_TOKEN_LESSEQUAL,
GST_ASM_TOKEN_EQUAL,
GST_ASM_TOKEN_NOTEQUAL,
GST_ASM_TOKEN_AND,
GST_ASM_TOKEN_OR
} GstASMToken;
typedef enum {
GST_ASM_NODE_UNKNOWN,
GST_ASM_NODE_VARIABLE,
GST_ASM_NODE_INTEGER,
GST_ASM_NODE_FLOAT,
GST_ASM_NODE_OPERATOR
} GstASMNodeType;
typedef enum {
GST_ASM_OP_GREATER = GST_ASM_TOKEN_GREATER,
GST_ASM_OP_LESS = GST_ASM_TOKEN_LESS,
GST_ASM_OP_GREATEREQUAL = GST_ASM_TOKEN_GREATEREQUAL,
GST_ASM_OP_LESSEQUAL = GST_ASM_TOKEN_LESSEQUAL,
GST_ASM_OP_EQUAL = GST_ASM_TOKEN_EQUAL,
GST_ASM_OP_NOTEQUAL = GST_ASM_TOKEN_NOTEQUAL,
GST_ASM_OP_AND = GST_ASM_TOKEN_AND,
GST_ASM_OP_OR = GST_ASM_TOKEN_OR
} GstASMOp;
struct _GstASMNode {
GstASMNodeType type;
union {
gchar *varname;
gint intval;
gfloat floatval;
GstASMOp optype;
} data;
GstASMNode *left;
GstASMNode *right;
};
struct _GstASMRule {
GstASMNode *root;
GHashTable *props;
};
struct _GstASMRuleBook {
const gchar *rulebook;
guint n_rules;
GList *rules;
};
G_END_DECLS
GstASMRuleBook* gst_asm_rule_book_new (const gchar *rulebook);
void gst_asm_rule_book_free (GstASMRuleBook *book);
gint gst_asm_rule_book_match (GstASMRuleBook *book, GHashTable *vars,
gint *rulematches);
#endif /* __GST_ASM_RULES_H__ */
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