write silence on the channel during t.38 negotiation
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@327514 f38db490-d61c-443f-a65b-d21fe96a405b
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@ -2977,8 +2977,21 @@ static struct ast_frame *fax_gateway_framehook(struct ast_channel *chan, struct
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/* force silence on the line if T.38 negotiation might be taking place */
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if (!ast_tvzero(gateway->ced_timeout_start) || (gateway->t38_state != T38_STATE_UNAVAILABLE && gateway->t38_state != T38_STATE_REJECTED)) {
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/* XXX may need to return a silence frame here */
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return &ast_null_frame;
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if (f->frametype == AST_FRAME_VOICE && f->subclass.format.id == AST_FORMAT_SLINEAR) {
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short silence_buf[f->samples];
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struct ast_frame silence_frame = {
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.frametype = AST_FRAME_VOICE,
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.data.ptr = silence_buf,
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.samples = f->samples,
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.datalen = sizeof(silence_buf),
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};
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ast_format_set(&silence_frame.subclass.format, AST_FORMAT_SLINEAR, 0);
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memset(silence_buf, 0, sizeof(silence_buf));
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return ast_frisolate(&silence_frame);
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} else {
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return &ast_null_frame;
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}
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}
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return f;
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