[Asterisk-Dev] chan_modem_i4l (only noise is received, reason for the problem)

[David Arendt]

Hi,

I had the problem with recent asterisk versions that chan_modem_i4l is 
only receiving noise.
I decided to examine what leads to this problems an found the reason.
This patch was applied in cvs in order to fix some gcc4 compiler 
warnings and has broken receiving.

Bye,
David Arendt

--- asterisk/channels/chan_modem_i4l.c    2005/06/24 02:15:04    1.29
+++ asterisk/channels/chan_modem_i4l.c    2005/08/05 16:29:30    1.30
@@ -21,7 +21,7 @@

#include "asterisk.h"

-ASTERISK_FILE_VERSION(__FILE__, "$Revision: 1.29 $")
+ASTERISK_FILE_VERSION(__FILE__, "$Revision: 1.30 $")

#include "asterisk/lock.h"
#include "asterisk/vmodem.h"
@@ -316,7 +316,7 @@ static struct ast_frame *i4l_handle_esca

static struct ast_frame *i4l_read(struct ast_modem_pvt *p)
{
-    unsigned char result[256];
+    char result[256];
    short *b;
    struct ast_frame *f=NULL;
    int res;
@@ -426,7 +426,7 @@ static struct ast_frame *i4l_read(struct
                        if (!f)
                            return NULL;
                    } else {
-                        *(b++) = AST_MULAW(result[x]);
+                        *(b++) = AST_MULAW((int)result[x]);
                        p->obuflen += 2;
                    }
                }