per_frame_eqn.c
上传用户:riyaled888
上传日期:2009-03-27
资源大小:7338k
文件大小:3k
- /*****************************************************************************
- * per_frame_eqn.c:
- *****************************************************************************
- * Copyright (C) 2004 VideoLAN
- * $Id: per_frame_eqn.c 8205 2004-07-17 13:55:48Z asmax $
- *
- * Authors: Cyril Deguet <asmax@videolan.org>
- * code from projectM http://xmms-projectm.sourceforge.net
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include "fatal.h"
- #include "common.h"
- #include "per_frame_eqn_types.h"
- #include "per_frame_eqn.h"
- #include "expr_types.h"
- #include "eval.h"
- /* Evaluate an equation */
- void eval_per_frame_eqn(per_frame_eqn_t * per_frame_eqn) {
- if (per_frame_eqn == NULL)
- return;
- if (PER_FRAME_EQN_DEBUG) {
- printf("per_frame_%d=%s= ", per_frame_eqn->index, per_frame_eqn->param->name);
- fflush(stdout);
- }
-
- //*((double*)per_frame_eqn->param->engine_val) = eval_gen_expr(per_frame_eqn->gen_expr);
- set_param(per_frame_eqn->param, eval_gen_expr(per_frame_eqn->gen_expr));
- if (PER_FRAME_EQN_DEBUG) printf(" = %.4fn", *((double*)per_frame_eqn->param->engine_val));
-
- }
- /*
- void eval_per_frame_init_eqn(per_frame_eqn_t * per_frame_eqn) {
- double val;
- init_cond_t * init_cond;
- if (per_frame_eqn == NULL)
- return;
- if (PER_FRAME_EQN_DEBUG) {
- printf("per_frame_init: %s = ", per_frame_eqn->param->name);
- fflush(stdout);
- }
-
-
- val = *((double*)per_frame_eqn->param->engine_val) = eval_gen_expr(per_frame_eqn->gen_expr);
- if (PER_FRAME_EQN_DEBUG) printf(" = %fn", *((double*)per_frame_eqn->param->engine_val));
-
- if (per_frame_eqn->param->flags & P_FLAG_QVAR) {
-
- per_frame_eqn->param->init_val.double_val = val;
- if ((init_cond = new_init_cond(per_frame_eqn->param)) == NULL)
- return;
-
- if ((list_append(init_cond_list, init_cond)) < 0) {
- free_init_cond(init_cond);
- return;
- }
- }
- }
- */
- /* Frees perframe equation structure */
- void free_per_frame_eqn(per_frame_eqn_t * per_frame_eqn) {
- if (per_frame_eqn == NULL)
- return;
-
- free_gen_expr(per_frame_eqn->gen_expr);
- free(per_frame_eqn);
- }
- /* Create a new per frame equation */
- per_frame_eqn_t * new_per_frame_eqn(int index, param_t * param, gen_expr_t * gen_expr) {
- per_frame_eqn_t * per_frame_eqn;
- per_frame_eqn = (per_frame_eqn_t*)malloc(sizeof(per_frame_eqn_t));
- if (per_frame_eqn == NULL)
- return NULL;
- per_frame_eqn->param = param;
- per_frame_eqn->gen_expr = gen_expr;
- per_frame_eqn->index = index;
- /* Set per frame eqn name */
- // memset(per_frame_eqn->name, 0, MAX_TOKEN_SIZE);
- //strncpy(per_frame_eqn->name, name, MAX_TOKEN_SIZE-1);
- return per_frame_eqn;
- }