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write silence on the channel during t.38 negotiation

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@327514 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Matthew Nicholson
2011-07-11 14:13:24 +00:00
parent 7eda60dca1
commit 4f08a3a8eb
1 changed files with 15 additions and 2 deletions
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17
res/res_fax.c
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@@ -2977,8 +2977,21 @@ static struct ast_frame *fax_gateway_framehook(struct ast_channel *chan, struct
/* force silence on the line if T.38 negotiation might be taking place */
if (!ast_tvzero(gateway->ced_timeout_start) || (gateway->t38_state != T38_STATE_UNAVAILABLE && gateway->t38_state != T38_STATE_REJECTED)) {
/* XXX may need to return a silence frame here */
return &ast_null_frame;
if (f->frametype == AST_FRAME_VOICE && f->subclass.format.id == AST_FORMAT_SLINEAR) {
short silence_buf[f->samples];
struct ast_frame silence_frame = {
.frametype = AST_FRAME_VOICE,
.data.ptr = silence_buf,
.samples = f->samples,
.datalen = sizeof(silence_buf),
};
ast_format_set(&silence_frame.subclass.format, AST_FORMAT_SLINEAR, 0);
memset(silence_buf, 0, sizeof(silence_buf));
return ast_frisolate(&silence_frame);
} else {
return &ast_null_frame;
}
}
return f;