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04424d07ef
Original commit message from CVS: * gst/realmedia/.cvsignore: Add test to ignore. * gst/realmedia/Makefile.am: * gst/realmedia/asmrules.c: (gst_asm_node_new), (gst_asm_node_free), (gst_asm_operator_eval), (gst_asm_node_evaluate), (gst_asm_scan_new), (gst_asm_scan_free), (gst_asm_scan_string), (gst_asm_scan_number), (gst_asm_scan_identifier), (gst_asm_scan_print_token), (gst_asm_scan_next_token), (gst_asm_rule_new), (gst_asm_rule_free), (gst_asm_rule_add_property), (gst_asm_scan_parse_operand), (gst_asm_scan_parse_expression), (gst_asm_scan_parse_condition), (gst_asm_scan_parse_property), (gst_asm_scan_parse_rule), (gst_asm_rule_evaluate), (gst_asm_rule_book_new), (gst_asm_rule_book_n_rules), (gst_asm_rule_book_free), (gst_asm_rule_book_match), (main): * gst/realmedia/asmrules.h: Added asembler rule book parser and evaluator. * gst/realmedia/rtspreal.c: (rtsp_ext_real_parse_sdp), (rtsp_ext_real_stream_select), (gst_rtsp_real_plugin_init): * gst/realmedia/rtspreal.h: Keep per stream config info. Parse and evaluate asm rule books for stream selection.
115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/* GStreamer
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* Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
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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_ASM_RULES_H__
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#define __GST_ASM_RULES_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define MAX_RULEMATCHES 16
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typedef struct _GstASMNode GstASMNode;
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typedef struct _GstASMRule GstASMRule;
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typedef struct _GstASMRuleBook GstASMRuleBook;
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typedef enum {
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GST_ASM_TOKEN_NONE,
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GST_ASM_TOKEN_EOF,
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GST_ASM_TOKEN_INT,
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GST_ASM_TOKEN_FLOAT,
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GST_ASM_TOKEN_IDENTIFIER,
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GST_ASM_TOKEN_STRING,
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GST_ASM_TOKEN_HASH,
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GST_ASM_TOKEN_SEMICOLON,
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GST_ASM_TOKEN_COMMA,
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GST_ASM_TOKEN_DOLLAR,
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GST_ASM_TOKEN_LPAREN,
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GST_ASM_TOKEN_RPAREN,
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GST_ASM_TOKEN_GREATER,
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GST_ASM_TOKEN_LESS,
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GST_ASM_TOKEN_GREATEREQUAL,
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GST_ASM_TOKEN_LESSEQUAL,
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GST_ASM_TOKEN_EQUAL,
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GST_ASM_TOKEN_NOTEQUAL,
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GST_ASM_TOKEN_AND,
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GST_ASM_TOKEN_OR
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} GstASMToken;
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typedef enum {
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GST_ASM_NODE_UNKNOWN,
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GST_ASM_NODE_VARIABLE,
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GST_ASM_NODE_INTEGER,
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GST_ASM_NODE_FLOAT,
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GST_ASM_NODE_OPERATOR
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} GstASMNodeType;
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typedef enum {
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GST_ASM_OP_GREATER = GST_ASM_TOKEN_GREATER,
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GST_ASM_OP_LESS = GST_ASM_TOKEN_LESS,
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GST_ASM_OP_GREATEREQUAL = GST_ASM_TOKEN_GREATEREQUAL,
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GST_ASM_OP_LESSEQUAL = GST_ASM_TOKEN_LESSEQUAL,
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GST_ASM_OP_EQUAL = GST_ASM_TOKEN_EQUAL,
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GST_ASM_OP_NOTEQUAL = GST_ASM_TOKEN_NOTEQUAL,
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GST_ASM_OP_AND = GST_ASM_TOKEN_AND,
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GST_ASM_OP_OR = GST_ASM_TOKEN_OR
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} GstASMOp;
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struct _GstASMNode {
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GstASMNodeType type;
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union {
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gchar *varname;
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gint intval;
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gfloat floatval;
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GstASMOp optype;
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} data;
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GstASMNode *left;
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GstASMNode *right;
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};
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struct _GstASMRule {
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GstASMNode *root;
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GHashTable *props;
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};
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struct _GstASMRuleBook {
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const gchar *rulebook;
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guint n_rules;
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GList *rules;
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};
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G_END_DECLS
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GstASMRuleBook* gst_asm_rule_book_new (const gchar *rulebook);
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void gst_asm_rule_book_free (GstASMRuleBook *book);
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gint gst_asm_rule_book_match (GstASMRuleBook *book, GHashTable *vars,
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gint *rulematches);
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#endif /* __GST_ASM_RULES_H__ */
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