From: Steve Underwood <steveu@coppice.org>
Date: Tue, 3 Oct 2017 14:33:07 +0000 (+0100)
Subject: Added a warning message to spandsp's fax_decode program when it looks like
X-Git-Tag: v1.8.0~240
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=95b840648f216721f76269b4af0f04fe5206516a;p=thirdparty%2Ffreeswitch.git

Added a warning message to spandsp's fax_decode program when it looks like
the FAX machines are entering a proprietary mode.
---

diff --git a/libs/spandsp/tests/fax_decode.c b/libs/spandsp/tests/fax_decode.c
index 327ae0fdd6..9f6a474b0d 100644
--- a/libs/spandsp/tests/fax_decode.c
+++ b/libs/spandsp/tests/fax_decode.c
@@ -153,7 +153,9 @@ static void print_frame(const char *io, const uint8_t *fr, int frlen)
     /*endif*/
     fprintf(stderr, "%s %s:", io, t30_frametype(fr[2]));
     for (i = 2;  i < frlen;  i++)
+    {
         fprintf(stderr, " %02x", fr[i]);
+    }
     /*endfor*/
     fprintf(stderr, "\n");
     type = fr[2] & 0xFE;
@@ -182,6 +184,11 @@ static void print_frame(const char *io, const uint8_t *fr, int frlen)
             /*endif*/
         }
         /*endif*/
+        if (type == T30_NSS  ||  type == T30_NSC)
+        {
+            fprintf(stderr, "WARNING: The FAX machines may be switching into a proprietary mode, which this software cannot decode\n");
+        }
+        /*endif*/
     }
     /*endif*/
 }