1 files changed, 128 insertions, 0 deletions
diff --git a/src/libac3/sanity_check.c b/src/libac3/sanity_check.c
new file mode 100644
index 000000000..ef0af0bd2
--- /dev/null
+++ b/src/libac3/sanity_check.c
@@ -0,0 +1,128 @@
+/* 
+ *  sanity_check.c
+ *
+ *	Copyright (C) Aaron Holtzman - May 1999
+ *
+ *  This file is part of ac3dec, a free Dolby AC-3 stream decoder.
+ *	
+ *  ac3dec 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, or (at your option)
+ *  any later version.
+ *   
+ *  ac3dec 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 GNU Make; see the file COPYING.  If not, write to
+ *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif 
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "ac3.h"
+#include "ac3_internal.h"
+#include "sanity_check.h"
+
+
+/**
+ *
+ **/
+
+void sanity_check_init(syncinfo_t *syncinfo, bsi_t *bsi, audblk_t *audblk)
+{
+	syncinfo->magic = AC3_MAGIC_NUMBER;
+	bsi->magic = AC3_MAGIC_NUMBER;
+	audblk->magic1 = AC3_MAGIC_NUMBER;
+	audblk->magic2 = AC3_MAGIC_NUMBER;
+	audblk->magic3 = AC3_MAGIC_NUMBER;
+}
+
+
+/**
+ *
+ **/
+
+int sanity_check(syncinfo_t *syncinfo, bsi_t *bsi, audblk_t *audblk)
+{
+	int i;
+
+	if(syncinfo->magic != AC3_MAGIC_NUMBER) {
+		fprintf(stderr,"\n** Sanity check failed -- syncinfo magic number **");
+		return -1;
+	}
+	
+	if(bsi->magic != AC3_MAGIC_NUMBER) {
+		fprintf(stderr,"\n** Sanity check failed -- bsi magic number **");
+		return -1;
+	}
+
+	if(audblk->magic1 != AC3_MAGIC_NUMBER) {
+		fprintf(stderr,"\n** Sanity check failed -- audblk magic number 1 **"); 
+		return -1;
+	}
+
+	if(audblk->magic2 != AC3_MAGIC_NUMBER) {
+		fprintf(stderr,"\n** Sanity check failed -- audblk magic number 2 **"); 
+		return -1;
+	}
+
+	if(audblk->magic3 != AC3_MAGIC_NUMBER) {
+		fprintf(stderr,"\n** Sanity check failed -- audblk magic number 3 **"); 
+		return -1;
+	}
+
+	for(i = 0;i < 5 ; i++) {
+		if (audblk->fbw_exp[i][255] !=0 || audblk->fbw_exp[i][254] !=0 || 
+				audblk->fbw_exp[i][253] !=0) {
+			fprintf(stderr,"\n** Sanity check failed -- fbw_exp out of bounds **"); 
+			return -1;
+		}
+
+		if (audblk->fbw_bap[i][255] !=0 || audblk->fbw_bap[i][254] !=0 || 
+				audblk->fbw_bap[i][253] !=0) {
+			fprintf(stderr,"\n** Sanity check failed -- fbw_bap out of bounds **"); 
+			return -1;
+		}
+
+	}
+
+	if (audblk->cpl_exp[255] !=0 || audblk->cpl_exp[254] !=0 || 
+			audblk->cpl_exp[253] !=0) {
+		fprintf(stderr,"\n** Sanity check failed -- cpl_exp out of bounds **"); 
+		return -1;
+	}
+
+	if (audblk->cpl_bap[255] !=0 || audblk->cpl_bap[254] !=0 || 
+			audblk->cpl_bap[253] !=0) {
+		fprintf(stderr,"\n** Sanity check failed -- cpl_bap out of bounds **"); 
+		return -1;
+	}
+
+	if (audblk->cpl_flt[255] !=0 || audblk->cpl_flt[254] !=0 || 
+			audblk->cpl_flt[253] !=0) {
+		fprintf(stderr,"\n** Sanity check failed -- cpl_mant out of bounds **"); 
+		return -1;
+	}
+
+	if ((audblk->cplinu == 1) && (audblk->cplbegf > (audblk->cplendf+2))) {
+		fprintf(stderr,"\n** Sanity check failed -- cpl params inconsistent **"); 
+		return -1;
+	}
+
+	for(i=0; i < bsi->nfchans; i++) {
+		if((audblk->chincpl[i] == 0) && (audblk->chbwcod[i] > 60)) {
+			fprintf(stderr,"\n** Sanity check failed -- chbwcod too big **"); 
+			return -1;
+		}
+	}
+
+	return 0;
+}