--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spandsp-0.0.6pre17/tests/t38_terminal_to_gateway_tests.c	Fri Jun 25 15:50:58 2010 +0200
@@ -0,0 +1,516 @@
+/*
+ * SpanDSP - a series of DSP components for telephony
+ *
+ * t38_terminal_to_gateway_tests.c - Joint tests for the T.38 FoIP terminal and gateway modules.
+ *
+ * Written by Steve Underwood <steveu@coppice.org>
+ *
+ * Copyright (C) 2005, 2006 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: t38_terminal_to_gateway_tests.c,v 1.65.4.1 2009/12/19 09:47:57 steveu Exp $
+ */
+
+/*! \file */
+
+/*! \page t38_terminal_to_gateway_tests_page T.38 mixed gateway and termination tests
+\section t38_terminal_to_gateway_tests_page_sec_1 What does it do?
+These tests exercise the path
+
+    T.38 termination -> T.38 gateway -> FAX machine
+*/
+
+/* 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 <string.h>
+#include <assert.h>
+#include <errno.h>
+#include <sndfile.h>
+#if !defined(_WIN32)
+#include <unistd.h>
+#endif
+
+//#if defined(WITH_SPANDSP_INTERNALS)
+#define SPANDSP_EXPOSE_INTERNAL_STRUCTURES
+//#endif
+
+#include "spandsp.h"
+#include "spandsp-sim.h"
+
+#if defined(ENABLE_GUI)
+#include "media_monitor.h"
+#endif
+#include "fax_utils.h"
+
+#define SAMPLES_PER_CHUNK       160
+
+#define INPUT_FILE_NAME         "../test-data/itu/fax/itutests.tif"
+#define OUTPUT_FILE_NAME        "t38.tif"
+#define OUTPUT_FILE_NAME_WAVE   "t38_terminal_to_gateway.wav"
+
+t38_terminal_state_t *t38_state_a;
+t38_gateway_state_t *t38_state_b;
+fax_state_t *fax_state_b;
+
+g1050_state_t *path_a_to_b;
+g1050_state_t *path_b_to_a;
+
+double when = 0.0;
+
+int done[2] = {FALSE, FALSE};
+int succeeded[2] = {FALSE, FALSE};
+
+int simulate_incrementing_repeats = FALSE;
+
+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;
+    t30_stats_t t;
+    char tag[20];
+    
+    i = (int) (intptr_t) user_data;
+    snprintf(tag, sizeof(tag), "%c: Phase E", i);
+    printf("%c: Phase E handler on channel %c - (%d) %s\n", i, i, result, t30_completion_code_to_str(result));
+    log_transfer_statistics(s, tag);
+    log_tx_parameters(s, tag);
+    log_rx_parameters(s, tag);
+    t30_get_transfer_statistics(s, &t);
+    succeeded[i - 'A'] = (result == T30_ERR_OK)  &&  (t.pages_tx == 12  ||  t.pages_rx == 12);
+    done[i - 'A'] = TRUE;
+}
+/*- End of function --------------------------------------------------------*/
+
+static int tx_packet_handler_a(t38_core_state_t *s, void *user_data, const uint8_t *buf, int len, int count)
+{
+    t38_terminal_state_t *t;
+    int i;
+    static int subst_seq = 0;
+
+    /* This routine queues messages between two instances of T.38 processing */
+    t = (t38_terminal_state_t *) user_data;
+    if (simulate_incrementing_repeats)
+    {
+        for (i = 0;  i < count;  i++)
+        {
+            span_log(&s->logging, SPAN_LOG_FLOW, "Send seq %d, len %d\n", subst_seq, len);
+
+            g1050_put(path_a_to_b, buf, len, subst_seq, when);
+            subst_seq = (subst_seq + 1) & 0xFFFF;
+        }
+    }
+    else
+    {
+        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++)
+            g1050_put(path_a_to_b, buf, len, s->tx_seq_no, when);
+    }
+    return 0;
+}
+/*- End of function --------------------------------------------------------*/
+
+static int tx_packet_handler_b(t38_core_state_t *s, void *user_data, const uint8_t *buf, int len, int count)
+{
+    t38_terminal_state_t *t;
+    int i;
+    static int subst_seq = 0;
+
+    /* This routine queues messages between two instances of T.38 processing */
+    t = (t38_terminal_state_t *) user_data;
+    if (simulate_incrementing_repeats)
+    {
+        for (i = 0;  i < count;  i++)
+        {
+            span_log(&s->logging, SPAN_LOG_FLOW, "Send seq %d, len %d\n", subst_seq, len);
+
+            g1050_put(path_b_to_a, buf, len, subst_seq, when);
+            subst_seq = (subst_seq + 1) & 0xFFFF;
+        }
+    }
+    else
+    {
+        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++)
+            g1050_put(path_b_to_a, buf, len, s->tx_seq_no, when);
+    }
+    return 0;
+}
+/*- End of function --------------------------------------------------------*/
+
+int main(int argc, char *argv[])
+{
+    int16_t t38_amp_b[SAMPLES_PER_CHUNK];
+    int16_t t30_amp_b[SAMPLES_PER_CHUNK];
+    int16_t out_amp[2*SAMPLES_PER_CHUNK];
+    int t38_len_b;
+    int t30_len_b;
+    int msg_len;
+    uint8_t msg[1024];
+    int log_audio;
+    int outframes;
+    SNDFILE *wave_handle;
+    int t38_version;
+    int use_ecm;
+    int use_tep;
+    int feedback_audio;
+    int use_transmit_on_idle;
+    const char *input_file_name;
+    int i;
+    int seq_no;
+    int model_no;
+    int speed_pattern_no;
+    double tx_when;
+    double rx_when;
+    int use_gui;
+    int supported_modems;
+    int opt;
+    t30_state_t *t30;
+    t38_core_state_t *t38_core;
+    logging_state_t *logging;
+
+    log_audio = FALSE;
+    t38_version = 1;
+    use_ecm = FALSE;
+    input_file_name = INPUT_FILE_NAME;
+    simulate_incrementing_repeats = FALSE;
+    model_no = 0;
+    speed_pattern_no = 1;
+    use_gui = FALSE;
+    use_tep = FALSE;
+    feedback_audio = FALSE;
+    use_transmit_on_idle = TRUE;
+    supported_modems = T30_SUPPORT_V27TER | T30_SUPPORT_V29 | T30_SUPPORT_V17;
+    while ((opt = getopt(argc, argv, "efgi:Ilm:M:s:tv:")) != -1)
+    {
+        switch (opt)
+        {
+        case 'e':
+            use_ecm = TRUE;
+            break;
+        case 'f':
+            feedback_audio = TRUE;
+            break;
+        case 'g':
+#if defined(ENABLE_GUI)
+            use_gui = TRUE;
+#else
+            fprintf(stderr, "Graphical monitoring not available\n");
+            exit(2);
+#endif
+            break;
+        case 'i':
+            input_file_name = optarg;
+            break;
+        case 'I':
+            simulate_incrementing_repeats = TRUE;
+            break;
+        case 'l':
+            log_audio = TRUE;
+            break;
+        case 'm':
+            supported_modems = atoi(optarg);
+            break;
+        case 'M':
+            model_no = optarg[0] - 'A' + 1;
+            break;
+        case 's':
+            speed_pattern_no = atoi(optarg);
+            break;
+        case 't':
+            use_tep = TRUE;
+            break;
+        case 'v':
+            t38_version = atoi(optarg);
+            break;
+        default:
+            //usage();
+            exit(2);
+            break;
+        }
+    }
+
+    printf("Using T.38 version %d\n", t38_version);
+    if (use_ecm)
+        printf("Using ECM\n");
+
+    wave_handle = NULL;
+    if (log_audio)
+    {
+        if ((wave_handle = sf_open_telephony_write(OUTPUT_FILE_NAME_WAVE, 2)) == NULL)
+        {
+            fprintf(stderr, "    Cannot create audio file '%s'\n", OUTPUT_FILE_NAME_WAVE);
+            exit(2);
+        }
+    }
+
+    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 ((t38_state_a = t38_terminal_init(NULL, TRUE, tx_packet_handler_a, &t38_state_b)) == NULL)
+    {
+        fprintf(stderr, "Cannot start the T.38 channel\n");
+        exit(2);
+    }
+    t30 = t38_terminal_get_t30_state(t38_state_a);
+    t38_core = t38_terminal_get_t38_core_state(t38_state_a);
+    t38_set_t38_version(t38_core, t38_version);
+
+    logging = t38_terminal_get_logging_state(t38_state_a);
+    span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(logging, "T.38-A");
+
+    logging = t38_core_get_logging_state(t38_core);
+    span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(logging, "T.38-A");
+
+    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-A");
+
+    t30_set_supported_modems(t30, supported_modems);
+    t30_set_tx_ident(t30, "11111111");
+    t30_set_tx_file(t30, input_file_name, -1, -1);
+    t30_set_phase_b_handler(t30, phase_b_handler, (void *) (intptr_t) 'A');
+    t30_set_phase_d_handler(t30, phase_d_handler, (void *) (intptr_t) 'A');
+    t30_set_phase_e_handler(t30, phase_e_handler, (void *) (intptr_t) 'A');
+    t30_set_ecm_capability(t30, use_ecm);
+    if (use_ecm)
+        t30_set_supported_compressions(t30, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
+
+    if ((t38_state_b = t38_gateway_init(NULL, tx_packet_handler_b, &t38_state_a)) == NULL)
+    {
+        fprintf(stderr, "Cannot start the T.38 channel\n");
+        exit(2);
+    }
+    t38_core = t38_gateway_get_t38_core_state(t38_state_b);
+    t38_gateway_set_transmit_on_idle(t38_state_b, use_transmit_on_idle);
+    t38_set_t38_version(t38_core, t38_version);
+    t38_gateway_set_ecm_capability(t38_state_b, use_ecm);
+
+    logging = t38_gateway_get_logging_state(t38_state_b);
+    span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(logging, "T.38-B");
+
+    logging = t38_core_get_logging_state(t38_core);
+    span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(logging, "T.38-B");
+
+    memset(t38_amp_b, 0, sizeof(t38_amp_b));
+
+    if ((fax_state_b = fax_init(NULL, FALSE)) == NULL)
+    {
+        fprintf(stderr, "Cannot start FAX\n");
+        exit(2);
+    }
+    t30 = fax_get_t30_state(fax_state_b);
+    fax_set_transmit_on_idle(fax_state_b, use_transmit_on_idle);
+    fax_set_tep_mode(fax_state_b, use_tep);
+    t30_set_supported_modems(t30, supported_modems);
+    t30_set_tx_ident(t30, "22222222");
+    t30_set_tx_nsf(t30, (const uint8_t *) "\x50\x00\x00\x00Spandsp\x00", 12);
+    t30_set_rx_file(t30, OUTPUT_FILE_NAME, -1);
+    t30_set_phase_b_handler(t30, phase_b_handler, (void *) (intptr_t) 'B');
+    t30_set_phase_d_handler(t30, phase_d_handler, (void *) (intptr_t) 'B');
+    t30_set_phase_e_handler(t30, phase_e_handler, (void *) (intptr_t) 'B');
+    t30_set_ecm_capability(t30, use_ecm);
+    if (use_ecm)
+        t30_set_supported_compressions(t30, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
+
+    logging = fax_get_logging_state(fax_state_b);
+    span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(logging, "FAX-B ");
+
+    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-B ");
+
+    memset(t30_amp_b, 0, sizeof(t30_amp_b));
+
+#if defined(ENABLE_GUI)
+    if (use_gui)
+        start_media_monitor();
+#endif
+    for (;;)
+    {
+        logging = t38_terminal_get_logging_state(t38_state_a);
+        span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
+        t38_core = t38_terminal_get_t38_core_state(t38_state_a);
+        logging = t38_core_get_logging_state(t38_core);
+        span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
+        t30 = t38_terminal_get_t30_state(t38_state_a);
+        logging = t30_get_logging_state(t30);
+        span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
+        logging = t38_gateway_get_logging_state(t38_state_b);
+        span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
+        t38_core = t38_gateway_get_t38_core_state(t38_state_b);
+        logging = t38_core_get_logging_state(t38_core);
+        span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
+        logging = fax_get_logging_state(fax_state_b);
+        span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
+        t30 = fax_get_t30_state(fax_state_b);
+        logging = t30_get_logging_state(t30);
+        span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
+        memset(out_amp, 0, sizeof(out_amp));
+
+        t38_terminal_send_timeout(t38_state_a, SAMPLES_PER_CHUNK);
+
+        t30_len_b = fax_tx(fax_state_b, t30_amp_b, SAMPLES_PER_CHUNK);
+        if (!use_transmit_on_idle)
+        {
+            /* 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_b < SAMPLES_PER_CHUNK)
+            {
+                memset(t30_amp_b + t30_len_b, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t30_len_b));
+                t30_len_b = SAMPLES_PER_CHUNK;
+            }
+        }
+        if (feedback_audio)
+        {
+            for (i = 0;  i < t30_len_b;  i++)
+                t30_amp_b[i] += t38_amp_b[i] >> 1;
+        }
+        if (log_audio)
+        {
+            for (i = 0;  i < t30_len_b;  i++)
+                out_amp[2*i + 1] = t30_amp_b[i];
+        }
+        if (t38_gateway_rx(t38_state_b, t30_amp_b, t30_len_b))
+            break;
+    
+        t38_len_b = t38_gateway_tx(t38_state_b, t38_amp_b, SAMPLES_PER_CHUNK);
+        if (!use_transmit_on_idle)
+        {
+            if (t38_len_b < SAMPLES_PER_CHUNK)
+            {
+                memset(t38_amp_b + t38_len_b, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t38_len_b));
+                t38_len_b = SAMPLES_PER_CHUNK;
+            }
+        }
+        if (log_audio)
+        {
+            for (i = 0;  i < t38_len_b;  i++)
+                out_amp[2*i] = t38_amp_b[i];
+        }
+        if (fax_rx(fax_state_b, t38_amp_b, SAMPLES_PER_CHUNK))
+            break;
+
+        when += (float) SAMPLES_PER_CHUNK/(float) SAMPLE_RATE;
+
+        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 = t38_gateway_get_t38_core_state(t38_state_b);
+            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_a);
+            t38_core_rx_ifp_packet(t38_core, msg, msg_len, seq_no);
+        }
+        if (log_audio)
+        {
+            outframes = sf_writef_short(wave_handle, out_amp, SAMPLES_PER_CHUNK);
+            if (outframes != SAMPLES_PER_CHUNK)
+                break;
+        }
+
+        if (done[0]  &&  done[1])
+            break;
+#if defined(ENABLE_GUI)
+        if (use_gui)
+            media_monitor_update_display();
+#endif
+    }
+    t38_terminal_release(t38_state_a);
+    fax_release(fax_state_b);
+    if (log_audio)
+    {
+        if (sf_close(wave_handle) != 0)
+        {
+            fprintf(stderr, "    Cannot close audio file '%s'\n", OUTPUT_FILE_NAME_WAVE);
+            exit(2);
+        }
+    }
+    if (!succeeded[0]  ||  !succeeded[1])
+    {
+        printf("Tests failed\n");
+        exit(2);
+    }
+    printf("Tests passed\n");
+    return  0;
+}
+/*- End of function --------------------------------------------------------*/
+/*- End of file ------------------------------------------------------------*/