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https://github.com/signalwire/freeswitch.git
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Updated SpanDSP to snapshot on 2009-06-03 with some additions:
Fixed VS2005 version of make_modem_filter Fixed a couple of places where declaration and definition of functions do not have the same calling conventions. Only relevant for Win32 compiles. git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13831 d0543943-73ff-0310-b7d9-9358b9ac24b2
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@@ -23,7 +23,7 @@
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id: modem_connect_tones.c,v 1.35 2009/02/16 09:57:22 steveu Exp $
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* $Id: modem_connect_tones.c,v 1.37 2009/06/02 16:03:56 steveu Exp $
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*/
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/*! \file */
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@@ -88,8 +88,8 @@ SPAN_DECLARE(const char *) modem_connect_tone_to_str(int tone)
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/*- End of function --------------------------------------------------------*/
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SPAN_DECLARE_NONSTD(int) modem_connect_tones_tx(modem_connect_tones_tx_state_t *s,
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int16_t amp[],
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int len)
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int16_t amp[],
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int len)
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{
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int16_t mod;
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int i;
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@@ -354,7 +354,9 @@ static void v21_put_bit(void *user_data, int bit)
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}
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/*- End of function --------------------------------------------------------*/
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SPAN_DECLARE(int) modem_connect_tones_rx(modem_connect_tones_rx_state_t *s, const int16_t amp[], int len)
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SPAN_DECLARE_NONSTD(int) modem_connect_tones_rx(modem_connect_tones_rx_state_t *s,
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const int16_t amp[],
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int len)
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{
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int i;
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int16_t notched;
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@@ -399,6 +401,10 @@ SPAN_DECLARE(int) modem_connect_tones_rx(modem_connect_tones_rx_state_t *s, cons
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}
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}
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break;
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case MODEM_CONNECT_TONES_FAX_PREAMBLE:
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/* Ignore any CED tone, and just look for V.21 preamble. */
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fsk_rx(&(s->v21rx), amp, len);
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break;
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case MODEM_CONNECT_TONES_FAX_CED_OR_PREAMBLE:
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/* Also look for V.21 preamble. A lot of machines don't send the 2100Hz burst. It
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might also not be seen all the way through the channel, due to switching delays. */
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@@ -520,6 +526,7 @@ SPAN_DECLARE(modem_connect_tones_rx_state_t *) modem_connect_tones_rx_init(modem
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s->tone_type = tone_type;
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switch (s->tone_type)
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{
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case MODEM_CONNECT_TONES_FAX_PREAMBLE:
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case MODEM_CONNECT_TONES_FAX_CED_OR_PREAMBLE:
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fsk_rx_init(&(s->v21rx), &preset_fsk_specs[FSK_V21CH2], TRUE, v21_put_bit, s);
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fsk_rx_signal_cutoff(&(s->v21rx), -45.5f);
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