--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spandsp-0.0.6pre17/tests/t31_tests.c	Fri Jun 25 15:50:58 2010 +0200
@@ -0,0 +1,950 @@
+/*
+ * SpanDSP - a series of DSP components for telephony
+ *
+ * t31_tests.c - Tests for the T.31 modem.
+ *
+ * Written by Steve Underwood <steveu@coppice.org>
+ *
+ * Copyright (C) 2004 Steve Underwood
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id: t31_tests.c,v 1.72 2009/05/30 15:23:14 steveu Exp $
+ */
+
+/*! \file */
+
+/*! \page t31_tests_page T.31 tests
+\section t31_tests_page_sec_1 What does it do?
+*/
+
+/* Enable the following definition to enable direct probing into the FAX structures */
+//#define WITH_SPANDSP_INTERNALS
+
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
+
+#if defined(HAVE_FL_FL_H)  &&  defined(HAVE_FL_FL_CARTESIAN_H)  &&  defined(HAVE_FL_FL_AUDIO_METER_H)
+#define ENABLE_GUI
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <assert.h>
+#include <sndfile.h>
+
+//#if defined(WITH_SPANDSP_INTERNALS)
+#define SPANDSP_EXPOSE_INTERNAL_STRUCTURES
+//#endif
+
+#include "spandsp.h"
+#include "spandsp/t30_fcf.h"
+#include "spandsp-sim.h"
+
+#if defined(ENABLE_GUI)
+#include "media_monitor.h"
+#endif
+#include "fax_utils.h"
+
+#define INPUT_FILE_NAME         "../test-data/itu/fax/itu1.tif"
+#define OUTPUT_FILE_NAME        "t31.tif"
+#define OUTPUT_WAVE_FILE_NAME   "t31_tests.wav"
+
+enum
+{
+    ETX = 0x03,
+    DLE = 0x10,
+    SUB = 0x1A
+};
+
+#define MANUFACTURER            "www.soft-switch.org"
+
+#define SAMPLES_PER_CHUNK 160
+
+struct command_response_s
+{
+    const char *command;
+    int len_command;
+    const char *response;
+    int len_response;
+};
+
+g1050_state_t *path_a_to_b;
+g1050_state_t *path_b_to_a;
+
+double when = 0.0;
+
+#define EXCHANGE(a,b) {a, sizeof(a) - 1, b, sizeof(b) - 1}
+#define RESPONSE(b) {"", 0, b, sizeof(b) - 1}
+#define FAST_RESPONSE(b) {NULL, -1, b, sizeof(b) - 1}
+#define FAST_SEND(b) {(const char *) 1, -2, b, sizeof(b) - 1}
+#define FAST_SEND_TCF(b) {(const char *) 2, -2, b, sizeof(b) - 1}
+
+static const struct command_response_s fax_send_test_seq[] =
+{
+    EXCHANGE("ATE0\r", "ATE0\r\r\nOK\r\n"),
+    EXCHANGE("AT+FCLASS=1\r", "\r\nOK\r\n"),
+    EXCHANGE("ATD123456789\r", "\r\nCONNECT\r\n"),
+    //<NSF frame>         AT+FRH=3 is implied when dialing in the AT+FCLASS=1 state
+    //RESPONSE("\xFF\x03\x10\x03"),
+    //RESPONSE("\r\nOK\r\n"),
+    //EXCHANGE("AT+FRH=3\r", "\r\nCONNECT\r\n"),
+    //<CSI frame data>
+    RESPONSE("\xFF\x03\x40\x31\x31\x31\x31\x31\x31\x31\x31\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x1e\x46\x10\x03"),
+    RESPONSE("\r\nOK\r\n"),
+    EXCHANGE("AT+FRH=3\r", "\r\nCONNECT\r\n"),
+    //<DIS frame data>
+    RESPONSE("\xFF\x13\x80\x00\xEE\xF8\x80\x80\x91\x80\x80\x80\x18\x78\x57\x10\x03"), // For audio FAXing
+    //RESPONSE("\xFF\x13\x80\x04\xEE\xF8\x80\x80\x91\x80\x80\x80\x18\xE4\xE7\x10\x03"),   // For T.38 FAXing
+    RESPONSE("\r\nOK\r\n"),
+    //EXCHANGE("AT+FRH=3\r", "\r\nNO CARRIER\r\n"),
+    EXCHANGE("AT+FTH=3\r", "\r\nCONNECT\r\n"),
+    //<TSI frame data>
+    EXCHANGE("\xFF\x03\x43\x32\x32\x32\x32\x32\x32\x32\x32\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x10\x03", "\r\nCONNECT\r\n"),
+    //<DCS frame data>
+    EXCHANGE("\xFF\x13\x83\x01\xC6\x80\x80\x80\x80\x01\xFD\x13\x10\x03", "\r\nOK\r\n"),
+    //Do a wait for timed silence at this point, or there won't be one in the tests
+    EXCHANGE("AT+FRS=7\r", "\r\nOK\r\n"),
+    //EXCHANGE("AT+FTS=8;+FTM=96\r", "\r\nCONNECT\r\n"),
+    EXCHANGE("AT+FTS=8\r", "\r\nOK\r\n"),
+    EXCHANGE("AT+FTM=96\r", "\r\nCONNECT\r\n"),
+    //<TCF data pattern>
+    FAST_SEND_TCF("\r\nOK\r\n"),
+    EXCHANGE("AT+FRH=3\r", "\r\nCONNECT\r\n"),
+    //<CFR frame data>
+    RESPONSE("\xFF\x13\x84\xEA\x7D\x10\x03"),
+    RESPONSE("\r\nOK\r\n"),
+    EXCHANGE("AT+FTM=96\r", "\r\nCONNECT\r\n"),
+    //<page image data>
+    FAST_SEND("\r\nOK\r\n"),
+    //EXCHANGE("AT+FTS=8;+FTH=3\r", "\r\nCONNECT\r\n"),
+    EXCHANGE("AT+FTS=8\r", "\r\nOK\r\n"),
+    EXCHANGE("AT+FTH=3\r", "\r\nCONNECT\r\n"),
+    //<EOP frame data>
+    EXCHANGE("\xFF\x13\x2E\x10\x03", "\r\nOK\r\n"),
+    EXCHANGE("AT+FRH=3\r", "\r\nCONNECT\r\n"),
+    //<MCF frame data>
+    RESPONSE("\xFF\x13\x8C\xA2\xF1\x10\x03"),
+    RESPONSE("\r\nOK\r\n"),
+    EXCHANGE("AT+FTH=3\r", "\r\nCONNECT\r\n"),
+    // <DCN frame data>
+    EXCHANGE("\xFF\x13\xFB\x10\x03", "\r\nOK\r\n"),
+    EXCHANGE("ATH0\r", "\r\nOK\r\n")
+};
+
+static const struct command_response_s fax_receive_test_seq[] =
+{
+    EXCHANGE("ATE0\r", "ATE0\r\r\nOK\r\n"),
+    EXCHANGE("AT+FCLASS=1\r", "\r\nOK\r\n"),
+    RESPONSE("\r\nRING\r\n"),
+    EXCHANGE("ATA\r", "\r\nCONNECT\r\n"),
+    //<CSI frame data>
+    EXCHANGE("\xFF\x03\x40\x32\x32\x32\x32\x32\x32\x32\x32\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x10\x03", "\r\nCONNECT\r\n"),
+    //<DIS frame data>
+    EXCHANGE("\xFF\x13\x80\x01\xCE\xF4\x80\x80\x81\x80\x80\x80\x18\x10\x03", "\r\nOK\r\n"),
+    EXCHANGE("AT+FRH=3\r", "\r\nCONNECT\r\n"),
+    //<TSI frame data>
+    RESPONSE("\xFF\x03\x43\x31\x31\x31\x31\x31\x31\x31\x31\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\xAA\x1F\x10\x03"),
+    RESPONSE("\r\nOK\r\n"),
+    EXCHANGE("AT+FRH=3\r", "\r\nCONNECT\r\n"),
+    //<DCS frame data>
+    RESPONSE("\xFF\x13\x83\x00\xC6\x74\x53\x00\x10\x03"),
+    RESPONSE("\r\nOK\r\n"),
+    EXCHANGE("AT+FRM=96\r", "\r\nCONNECT\r\n"),
+    //<TCF data>
+    FAST_RESPONSE(NULL),
+    RESPONSE("\r\nNO CARRIER\r\n"),
+    EXCHANGE("AT+FTH=3\r", "\r\nCONNECT\r\n"),
+    //<CFR frame data>
+    EXCHANGE("\xFF\x13\x84\x10\x03", "\r\nOK\r\n"),
+    EXCHANGE("AT+FRM=96\r", "\r\nCONNECT\r\n"),
+    //<page image data>
+    FAST_RESPONSE(NULL),
+    RESPONSE("\r\nNO CARRIER\r\n"),
+    EXCHANGE("AT+FRH=3\r", "\r\nCONNECT\r\n"),
+    //<EOP frame data>
+    RESPONSE("\xFF\x13\x2F\x33\x66\x10\x03"),
+    RESPONSE("\r\nOK\r\n"),
+    EXCHANGE("AT+FTH=3\r", "\r\nCONNECT\r\n"),
+    //<MCF frame data>
+    EXCHANGE("\xFF\x13\x8C\x10\x03", "\r\nOK\r\n"),
+    EXCHANGE("AT+FRH=3\r", "\r\nCONNECT\r\n"),
+    //<DCN frame data>
+    RESPONSE("\xFF\x13\xfb\x9a\xf6\x10\x03"),
+    RESPONSE("\r\nOK\r\n"),
+    EXCHANGE("ATH0\r", "\r\nOK\r\n")
+};
+
+char *decode_test_file = NULL;
+int countdown = 0;
+int command_response_test_step = -1;
+char response_buf[1000];
+int response_buf_ptr = 0;
+int answered = FALSE;
+int kick = FALSE;
+int dled = FALSE;
+int done = FALSE;
+
+static const struct command_response_s *fax_test_seq;
+
+int test_seq_ptr = 0;
+
+t31_state_t *t31_state;
+
+static int phase_b_handler(t30_state_t *s, void *user_data, int result)
+{
+    int i;
+    char tag[20];
+
+    i = (int) (intptr_t) user_data;
+    snprintf(tag, sizeof(tag), "%c: Phase B:", i);
+    printf("%c: Phase B handler on channel %c - (0x%X) %s\n", i, i, result, t30_frametype(result));
+    log_rx_parameters(s, tag);
+    return T30_ERR_OK;
+}
+/*- End of function --------------------------------------------------------*/
+
+static int phase_d_handler(t30_state_t *s, void *user_data, int result)
+{
+    int i;
+    char tag[20];
+
+    i = (int) (intptr_t) user_data;
+    snprintf(tag, sizeof(tag), "%c: Phase D:", i);
+    printf("%c: Phase D handler on channel %c - (0x%X) %s\n", i, i, result, t30_frametype(result));
+    log_transfer_statistics(s, tag);
+    log_tx_parameters(s, tag);
+    log_rx_parameters(s, tag);
+    return T30_ERR_OK;
+}
+/*- End of function --------------------------------------------------------*/
+
+static void phase_e_handler(t30_state_t *s, void *user_data, int result)
+{
+    int i;
+    char tag[20];
+    
+    i = (intptr_t) user_data;
+    snprintf(tag, sizeof(tag), "%c: Phase E:", i);
+    printf("Phase E handler on channel %c\n", i);
+    log_transfer_statistics(s, tag);
+    log_tx_parameters(s, tag);
+    log_rx_parameters(s, tag);
+    //exit(0);
+}
+/*- End of function --------------------------------------------------------*/
+
+static int modem_call_control(t31_state_t *s, void *user_data, int op, const char *num)
+{
+    switch (op)
+    {
+    case AT_MODEM_CONTROL_ANSWER:
+        printf("\nModem control - Answering\n");
+        answered = TRUE;
+        break;
+    case AT_MODEM_CONTROL_CALL:
+        printf("\nModem control - Dialing '%s'\n", num);
+        t31_call_event(t31_state, AT_CALL_EVENT_CONNECTED);
+        break;
+    case AT_MODEM_CONTROL_HANGUP:
+        printf("\nModem control - Hanging up\n");
+        done = TRUE;
+        break;
+    case AT_MODEM_CONTROL_OFFHOOK:
+        printf("\nModem control - Going off hook\n");
+        break;
+    case AT_MODEM_CONTROL_DTR:
+        printf("\nModem control - DTR %d\n", (int) (intptr_t) num);
+        break;
+    case AT_MODEM_CONTROL_RTS:
+        printf("\nModem control - RTS %d\n", (int) (intptr_t) num);
+        break;
+    case AT_MODEM_CONTROL_CTS:
+        printf("\nModem control - CTS %d\n", (int) (intptr_t) num);
+        break;
+    case AT_MODEM_CONTROL_CAR:
+        printf("\nModem control - CAR %d\n", (int) (intptr_t) num);
+        break;
+    case AT_MODEM_CONTROL_RNG:
+        printf("\nModem control - RNG %d\n", (int) (intptr_t) num);
+        break;
+    case AT_MODEM_CONTROL_DSR:
+        printf("\nModem control - DSR %d\n", (int) (intptr_t) num);
+        break;
+    default:
+        printf("\nModem control - operation %d\n", op);
+        break;
+    }
+    /*endswitch*/
+    return 0;
+}
+/*- End of function --------------------------------------------------------*/
+
+static int at_tx_handler(at_state_t *s, void *user_data, const uint8_t *buf, size_t len)
+{
+    size_t i;
+
+    i = 0;
+    if (fax_test_seq[test_seq_ptr].command == NULL)
+    {
+        /* TCF or non-ECM image data expected */
+        for (  ;  i < len;  i++)
+        {
+            if (dled)
+            {
+                if (buf[i] == ETX)
+                {
+                    printf("\nFast data ended\n");
+                    response_buf_ptr = 0;
+                    response_buf[response_buf_ptr] = '\0';
+                    test_seq_ptr++;
+                    if (fax_test_seq[test_seq_ptr].command)
+                        kick = TRUE;
+                    break;
+                }
+                dled = FALSE;
+            }
+            else
+            {
+                if (buf[i] == DLE)
+                    dled = TRUE;
+            }
+        }
+        i++;
+        if (i >= len)
+            return 0;
+    }
+    for (  ;  i < len;  i++)
+    {
+        response_buf[response_buf_ptr++] = buf[i];
+        putchar(buf[i]);
+    }
+    response_buf[response_buf_ptr] = '\0';
+    printf("Expected ");
+    for (i = 0;  i < response_buf_ptr;  i++)
+        printf("%02x ", fax_test_seq[test_seq_ptr].response[i] & 0xFF);
+    printf("\n");
+    printf("Response ");
+    for (i = 0;  i < response_buf_ptr;  i++)
+        printf("%02x ", response_buf[i] & 0xFF);
+    printf("\n");
+printf("Match %d against %d\n", response_buf_ptr, fax_test_seq[test_seq_ptr].len_response);
+    if (response_buf_ptr >= fax_test_seq[test_seq_ptr].len_response
+        &&
+        memcmp(fax_test_seq[test_seq_ptr].response, response_buf, fax_test_seq[test_seq_ptr].len_response) == 0)
+    {
+        printf("\nMatched\n");
+        test_seq_ptr++;
+        response_buf_ptr = 0;
+        response_buf[response_buf_ptr] = '\0';
+        if (fax_test_seq[test_seq_ptr].command)
+            kick = TRUE;
+        else
+            dled = FALSE;
+    }
+    return 0;
+}
+/*- End of function --------------------------------------------------------*/
+
+static int t38_tx_packet_handler(t38_core_state_t *s, void *user_data, const uint8_t *buf, int len, int count)
+{
+    t31_state_t *t;
+    int i;
+
+    /* This routine queues messages between two instances of T.38 processing */
+    t = (t31_state_t *) user_data;
+    span_log(&s->logging, SPAN_LOG_FLOW, "Send seq %d, len %d, count %d\n", s->tx_seq_no, len, count);
+
+    for (i = 0;  i < count;  i++)
+    {
+        if (g1050_put(path_a_to_b, buf, len, s->tx_seq_no, when) < 0)
+            printf("Lost packet %d\n", s->tx_seq_no);
+    }
+    return 0;
+}
+/*- End of function --------------------------------------------------------*/
+
+static int t31_tx_packet_handler(t38_core_state_t *s, void *user_data, const uint8_t *buf, int len, int count)
+{
+    //t38_terminal_state_t *t;
+    int i;
+
+    /* This routine queues messages between two instances of T.38 processing */
+    //t = (t38_terminal_state_t *) user_data;
+    span_log(&s->logging, SPAN_LOG_FLOW, "Send seq %d, len %d, count %d\n", s->tx_seq_no, len, count);
+
+    for (i = 0;  i < count;  i++)
+    {
+        if (g1050_put(path_b_to_a, buf, len, s->tx_seq_no, when) < 0)
+            printf("Lost packet %d\n", s->tx_seq_no);
+    }
+    return 0;
+}
+/*- End of function --------------------------------------------------------*/
+
+static int t38_tests(int use_gui, int test_sending, int model_no, int speed_pattern_no)
+{
+    t38_terminal_state_t *t38_state;
+    int fast_send;
+    int fast_send_tcf;
+    int fast_blocks;
+    uint8_t fast_buf[1000];
+    int msg_len;
+    uint8_t msg[1024];
+    int t38_version;
+    int without_pacing;
+    int use_tep;
+    int seq_no;
+    double tx_when;
+    double rx_when;
+    t30_state_t *t30;
+    t38_core_state_t *t38_core;
+    logging_state_t *logging;
+    int i;
+
+    t38_version = 1;
+    without_pacing = FALSE;
+    use_tep = FALSE;
+
+    srand48(0x1234567);
+    if ((path_a_to_b = g1050_init(model_no, speed_pattern_no, 100, 33)) == NULL)
+    {
+        fprintf(stderr, "Failed to start IP network path model\n");
+        exit(2);
+    }
+    if ((path_b_to_a = g1050_init(model_no, speed_pattern_no, 100, 33)) == NULL)
+    {
+        fprintf(stderr, "Failed to start IP network path model\n");
+        exit(2);
+    }
+    if ((t31_state = t31_init(NULL, at_tx_handler, NULL, modem_call_control, NULL, t31_tx_packet_handler, NULL)) == NULL)
+    {
+        fprintf(stderr, "    Cannot start the T.31 T.38 modem\n");
+        exit(2);
+    }
+    logging = t31_get_logging_state(t31_state);
+    span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(logging, "T.31");
+
+    t38_core = t31_get_t38_core_state(t31_state);
+    span_log_set_level(&t38_core->logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(&t38_core->logging, "T.31");
+
+    span_log_set_level(&t31_state->at_state.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(&t31_state->at_state.logging, "T.31");
+
+    t31_set_mode(t31_state, TRUE);
+    t38_set_t38_version(t38_core, t38_version);
+
+    if (test_sending)
+    {
+        if ((t38_state = t38_terminal_init(NULL, FALSE, t38_tx_packet_handler, t31_state)) == NULL)
+        {
+            fprintf(stderr, "Cannot start the T.38 channel\n");
+            exit(2);
+        }
+        t30 = t38_terminal_get_t30_state(t38_state);
+        t30_set_rx_file(t30, OUTPUT_FILE_NAME, -1);
+        fax_test_seq = fax_send_test_seq;
+        countdown = 0;
+    }
+    else
+    {
+        if ((t38_state = t38_terminal_init(NULL, TRUE, t38_tx_packet_handler, t31_state)) == NULL)
+        {
+            fprintf(stderr, "Cannot start the T.38 channel\n");
+            exit(2);
+        }
+        t30 = t38_terminal_get_t30_state(t38_state);
+        t30_set_tx_file(t30, INPUT_FILE_NAME, -1, -1);
+        fax_test_seq = fax_receive_test_seq;
+        countdown = 250;
+    }
+
+    t30 = t38_terminal_get_t30_state(t38_state);
+    t38_core = t38_terminal_get_t38_core_state(t38_state);
+    t38_set_t38_version(t38_core, t38_version);
+    t38_terminal_set_config(t38_state, without_pacing);
+    t38_terminal_set_tep_mode(t38_state, use_tep);
+
+    t30_set_tx_ident(t30, "11111111");
+    t30_set_supported_modems(t30, T30_SUPPORT_V27TER | T30_SUPPORT_V29 | T30_SUPPORT_V17);
+    //t30_set_tx_nsf(t30, (const uint8_t *) "\x50\x00\x00\x00Spandsp\x00", 12);
+    t30_set_phase_b_handler(t30, phase_b_handler, (void *) 'A');
+    t30_set_phase_d_handler(t30, phase_d_handler, (void *) 'A');
+    t30_set_phase_e_handler(t30, phase_e_handler, (void *) 'A');
+
+    logging = t38_terminal_get_logging_state(t38_state);
+    span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(logging, "T.38");
+
+    t38_core = t38_terminal_get_t38_core_state(t38_state);
+    span_log_set_level(&t38_core->logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(&t38_core->logging, "T.38");
+
+    logging = t30_get_logging_state(t30);
+    span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(logging, "T.38");
+
+    fast_send = FALSE;
+    fast_send_tcf = TRUE;
+    fast_blocks = 0;
+    kick = TRUE;
+#if defined(ENABLE_GUI)
+    if (use_gui)
+        start_media_monitor();
+#endif
+    while (!done)
+    {
+        logging = t38_terminal_get_logging_state(t38_state);
+        span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
+        t38_core = t38_terminal_get_t38_core_state(t38_state);
+        logging = t38_core_get_logging_state(t38_core);
+        span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
+        t30 = t38_terminal_get_t30_state(t38_state);
+        logging = t30_get_logging_state(t30);
+        span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
+
+        logging = t31_get_logging_state(t31_state);
+        span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
+        t38_core = t31_get_t38_core_state(t31_state);
+        logging = t38_core_get_logging_state(t38_core);
+        span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
+        span_log_bump_samples(&t31_state->at_state.logging, SAMPLES_PER_CHUNK);
+
+        t38_terminal_send_timeout(t38_state, SAMPLES_PER_CHUNK);
+        t31_t38_send_timeout(t31_state, SAMPLES_PER_CHUNK);
+
+        when += (float) SAMPLES_PER_CHUNK/(float) SAMPLE_RATE;
+
+        if (kick)
+        {
+            kick = FALSE;
+            if (fax_test_seq[test_seq_ptr].command > (const char *) 2)
+            {
+                if (fax_test_seq[test_seq_ptr].command[0])
+                {
+                    printf("%s\n", fax_test_seq[test_seq_ptr].command);
+                    t31_at_rx(t31_state, fax_test_seq[test_seq_ptr].command, fax_test_seq[test_seq_ptr].len_command);
+                }
+            }
+            else
+            {
+                if (fax_test_seq[test_seq_ptr].command == (const char *) 2)
+                {
+                    printf("Fast send TCF\n");
+                    fast_send = TRUE;
+                    fast_send_tcf = TRUE;
+                    fast_blocks = 100;
+                }
+                else
+                {
+                    printf("Fast send image\n");
+                    fast_send = TRUE;
+                    fast_send_tcf = FALSE;
+                    fast_blocks = 100;
+                }
+            }
+        }
+        if (fast_send)
+        {
+            /* Send fast modem data */
+            if (fast_send_tcf)
+            {
+                memset(fast_buf, 0, 36);
+            }
+            else
+            {
+                if (fast_blocks == 1)
+                {
+                    /* Create the end of page condition */
+                    for (i = 0;  i < 36;  i += 2)
+                    {
+                        fast_buf[i] = 0x00;
+                        fast_buf[i + 1] = 0x80;
+                    }
+                }
+                else
+                {
+                    /* Create a chunk of white page */
+                    for (i = 0;  i < 36;  i += 4)
+                    {
+                        fast_buf[i] = 0x00;
+                        fast_buf[i + 1] = 0x80;
+                        fast_buf[i + 2] = 0xB2;
+                        fast_buf[i + 3] = 0x01;
+                    }
+                }
+            }
+            if (fast_blocks == 1)
+            {
+                /* Insert EOLs */
+                fast_buf[35] = ETX;
+                fast_buf[34] = DLE;
+                fast_buf[31] =
+                fast_buf[28] =
+                fast_buf[25] =
+                fast_buf[22] =
+                fast_buf[19] =
+                fast_buf[16] = 1;
+            }
+            t31_at_rx(t31_state, (char *) fast_buf, 36);
+            if (--fast_blocks == 0)
+                fast_send = FALSE;
+        }
+        if (countdown)
+        {
+            if (answered)
+            {
+                countdown = 0;
+                t31_call_event(t31_state, AT_CALL_EVENT_ANSWERED);
+            }
+            else if (--countdown == 0)
+            {
+                t31_call_event(t31_state, AT_CALL_EVENT_ALERTING);
+                countdown = 250;
+            }
+        }
+        while ((msg_len = g1050_get(path_a_to_b, msg, 1024, when, &seq_no, &tx_when, &rx_when)) >= 0)
+        {
+#if defined(ENABLE_GUI)
+            if (use_gui)
+                media_monitor_rx(seq_no, tx_when, rx_when);
+#endif
+            t38_core = t31_get_t38_core_state(t31_state);
+            t38_core_rx_ifp_packet(t38_core, msg, msg_len, seq_no);
+        }
+        while ((msg_len = g1050_get(path_b_to_a, msg, 1024, when, &seq_no, &tx_when, &rx_when)) >= 0)
+        {
+#if defined(ENABLE_GUI)
+            if (use_gui)
+                media_monitor_rx(seq_no, tx_when, rx_when);
+#endif
+            t38_core = t38_terminal_get_t38_core_state(t38_state);
+            t38_core_rx_ifp_packet(t38_core, msg, msg_len, seq_no);
+        }
+#if defined(ENABLE_GUI)
+        if (use_gui)
+            media_monitor_update_display();
+#endif
+    }
+    t38_terminal_release(t38_state);
+    return 0;
+}
+/*- End of function --------------------------------------------------------*/
+
+static int t30_tests(int log_audio, int test_sending)
+{
+    int k;
+    int outframes;
+    fax_state_t *fax_state;
+    int16_t t30_amp[SAMPLES_PER_CHUNK];
+    int16_t t31_amp[SAMPLES_PER_CHUNK];
+    int16_t silence[SAMPLES_PER_CHUNK];
+    int16_t out_amp[2*SAMPLES_PER_CHUNK];
+    int t30_len;
+    int t31_len;
+    SNDFILE *wave_handle;
+    SNDFILE *in_handle;
+    int fast_send;
+    int fast_send_tcf;
+    int fast_blocks;
+    uint8_t fast_buf[1000];
+    t30_state_t *t30;
+    logging_state_t *logging;
+    int i;
+
+    wave_handle = NULL;
+    if (log_audio)
+    {
+        if ((wave_handle = sf_open_telephony_write(OUTPUT_WAVE_FILE_NAME, 2)) == NULL)
+        {
+            fprintf(stderr, "    Cannot create audio file '%s'\n", OUTPUT_WAVE_FILE_NAME);
+            exit(2);
+        }
+    }
+
+    memset(silence, 0, sizeof(silence));
+ 
+    in_handle = NULL;
+    if (decode_test_file)
+    {
+        if ((in_handle = sf_open_telephony_read(decode_test_file, 1)) == NULL)
+        {
+            fprintf(stderr, "    Cannot create audio file '%s'\n", decode_test_file);
+            exit(2);
+        }
+    }
+
+    if ((t31_state = t31_init(NULL, at_tx_handler, NULL, modem_call_control, NULL, NULL, NULL)) == NULL)
+    {
+        fprintf(stderr, "    Cannot start the T.31 FAX modem\n");
+        exit(2);
+    }
+    logging = t31_get_logging_state(t31_state);
+    span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(logging, "T.31");
+
+    if (test_sending)
+    {
+        fax_state = fax_init(NULL, FALSE);
+        t30 = fax_get_t30_state(fax_state);
+        t30_set_rx_file(t30, OUTPUT_FILE_NAME, -1);
+        fax_test_seq = fax_send_test_seq;
+        countdown = 0;
+    }
+    else
+    {
+        fax_state = fax_init(NULL, TRUE);
+        t30 = fax_get_t30_state(fax_state);
+        t30_set_tx_file(t30, INPUT_FILE_NAME, -1, -1);
+        fax_test_seq = fax_receive_test_seq;
+        countdown = 250;
+    }
+    
+    t30_set_tx_ident(t30, "11111111");
+    t30_set_supported_modems(t30, T30_SUPPORT_V27TER | T30_SUPPORT_V29 | T30_SUPPORT_V17);
+    t30_set_phase_b_handler(t30, phase_b_handler, (void *) 'A');
+    t30_set_phase_d_handler(t30, phase_d_handler, (void *) 'A');
+    t30_set_phase_e_handler(t30, phase_e_handler, (void *) 'A');
+    memset(t30_amp, 0, sizeof(t30_amp));
+    
+    logging = t30_get_logging_state(t30);
+    span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(logging, "FAX");
+
+    logging = fax_get_logging_state(fax_state);
+    span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(logging, "FAX");
+
+    fast_send = FALSE;
+    fast_send_tcf = TRUE;
+    fast_blocks = 0;
+    kick = TRUE;
+    while (!done)
+    {
+        if (kick)
+        {
+            kick = FALSE;
+            if (fax_test_seq[test_seq_ptr].command > (const char *) 2)
+            {
+                if (fax_test_seq[test_seq_ptr].command[0])
+                {
+                    printf("%s\n", fax_test_seq[test_seq_ptr].command);
+                    t31_at_rx(t31_state, fax_test_seq[test_seq_ptr].command, fax_test_seq[test_seq_ptr].len_command);
+                }
+            }
+            else
+            {
+                if (fax_test_seq[test_seq_ptr].command == (const char *) 2)
+                {
+                    printf("Fast send TCF\n");
+                    fast_send = TRUE;
+                    fast_send_tcf = TRUE;
+                    fast_blocks = 100;
+                }
+                else
+                {
+                    printf("Fast send image\n");
+                    fast_send = TRUE;
+                    fast_send_tcf = FALSE;
+                    fast_blocks = 100;
+                }
+            }
+        }
+        if (fast_send)
+        {
+            /* Send fast modem data */
+            if (fast_send_tcf)
+            {
+                memset(fast_buf, 0, 36);
+            }
+            else
+            {
+                if (fast_blocks == 1)
+                {
+                    /* Create the end of page condition */
+                    for (i = 0;  i < 36;  i += 2)
+                    {
+                        fast_buf[i] = 0x00;
+                        fast_buf[i + 1] = 0x80;
+                    }
+                }
+                else
+                {
+                    /* Create a chunk of white page */
+                    for (i = 0;  i < 36;  i += 4)
+                    {
+                        fast_buf[i] = 0x00;
+                        fast_buf[i + 1] = 0x80;
+                        fast_buf[i + 2] = 0xB2;
+                        fast_buf[i + 3] = 0x01;
+                    }
+                }
+            }
+            if (fast_blocks == 1)
+            {
+                /* Insert EOLs */
+                fast_buf[35] = ETX;
+                fast_buf[34] = DLE;
+                fast_buf[31] =
+                fast_buf[28] =
+                fast_buf[25] =
+                fast_buf[22] =
+                fast_buf[19] =
+                fast_buf[16] = 1;
+            }
+            t31_at_rx(t31_state, (char *) fast_buf, 36);
+            if (--fast_blocks == 0)
+                fast_send = FALSE;
+        }
+        t30_len = fax_tx(fax_state, t30_amp, SAMPLES_PER_CHUNK);
+        /* The receive side always expects a full block of samples, but the
+           transmit side may not be sending any when it doesn't need to. We
+           may need to pad with some silence. */
+        if (t30_len < SAMPLES_PER_CHUNK)
+        {
+            memset(t30_amp + t30_len, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t30_len));
+            t30_len = SAMPLES_PER_CHUNK;
+        }
+        if (log_audio)
+        {
+            for (k = 0;  k < t30_len;  k++)
+                out_amp[2*k] = t30_amp[k];
+        }
+        if (t31_rx(t31_state, t30_amp, t30_len))
+            break;
+        if (countdown)
+        {
+            if (answered)
+            {
+                countdown = 0;
+                t31_call_event(t31_state, AT_CALL_EVENT_ANSWERED);
+            }
+            else if (--countdown == 0)
+            {
+                t31_call_event(t31_state, AT_CALL_EVENT_ALERTING);
+                countdown = 250;
+            }
+        }
+
+        t31_len = t31_tx(t31_state, t31_amp, SAMPLES_PER_CHUNK);
+        if (t31_len < SAMPLES_PER_CHUNK)
+        {
+            memset(t31_amp + t31_len, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t31_len));
+            t31_len = SAMPLES_PER_CHUNK;
+        }
+        if (log_audio)
+        {
+            for (k = 0;  k < t31_len;  k++)
+                out_amp[2*k + 1] = t31_amp[k];
+        }
+        if (fax_rx(fax_state, t31_amp, SAMPLES_PER_CHUNK))
+            break;
+
+        span_log_bump_samples(&fax_state->logging, SAMPLES_PER_CHUNK);
+        span_log_bump_samples(&t30->logging, SAMPLES_PER_CHUNK);
+
+        if (log_audio)
+        {
+            outframes = sf_writef_short(wave_handle, out_amp, SAMPLES_PER_CHUNK);
+            if (outframes != SAMPLES_PER_CHUNK)
+                break;
+        }
+    }
+    if (decode_test_file)
+    {
+        if (sf_close(in_handle) != 0)
+        {
+            fprintf(stderr, "    Cannot close audio file '%s'\n", decode_test_file);
+            exit(2);
+        }
+    }
+    if (log_audio)
+    {
+        if (sf_close(wave_handle) != 0)
+        {
+            fprintf(stderr, "    Cannot close audio file '%s'\n", OUTPUT_WAVE_FILE_NAME);
+            exit(2);
+        }
+    }
+    return 0;
+}
+/*- End of function --------------------------------------------------------*/
+
+int main(int argc, char *argv[])
+{
+    int log_audio;
+    int t38_mode;
+    int test_sending;
+    int use_gui;
+    int opt;
+
+    decode_test_file = NULL;
+    log_audio = FALSE;
+    test_sending = FALSE;
+    t38_mode = FALSE;
+    use_gui = FALSE;
+    while ((opt = getopt(argc, argv, "d:glrst")) != -1)
+    {
+        switch (opt)
+        {
+        case 'd':
+            decode_test_file = optarg;
+            break;
+        case 'g':
+#if defined(ENABLE_GUI)
+            use_gui = TRUE;
+#else
+            fprintf(stderr, "Graphical monitoring not available\n");
+            exit(2);
+#endif
+            break;
+        case 'l':
+            log_audio = TRUE;
+            break;
+        case 'r':
+            test_sending = FALSE;
+            break;
+        case 's':
+            test_sending = TRUE;
+            break;
+        case 't':
+            t38_mode = TRUE;
+            break;
+        default:
+            //usage();
+            exit(2);
+            break;
+        }
+    }
+
+    if (t38_mode)
+        t38_tests(use_gui, test_sending, 0, 1);
+    else
+        t30_tests(log_audio, test_sending);
+    if (done)
+    {
+        printf("Tests passed\n");
+    }
+    return  0;
+}
+/*- End of function --------------------------------------------------------*/
+/*- End of file ------------------------------------------------------------*/