--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spandsp-0.0.3/spandsp-0.0.3/tests/t38_gateway_to_terminal_tests.c	Fri Jun 25 16:00:21 2010 +0200
@@ -0,0 +1,384 @@
+/*
+ * SpanDSP - a series of DSP components for telephony
+ *
+ * t38_gateway_to_terminal_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_gateway_to_terminal_tests.c,v 1.31 2006/12/09 04:56:20 steveu Exp $
+ */
+
+/*! \file */
+
+/*! \page t38_gateway_to_terminal_tests_page T.38 mixed gateway and termination tests
+\section t38_gateway_to_terminal_tests_page_sec_1 What does it do?
+These tests exercise the path
+
+    FAX machine -> T.38 gateway -> T.38 termination
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <string.h>
+#if defined(HAVE_TGMATH_H)
+#include <tgmath.h>
+#endif
+#if defined(HAVE_MATH_H)
+#include <math.h>
+#endif
+#include <assert.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#define __USE_MISC
+#include <arpa/inet.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <audiofile.h>
+#include <tiffio.h>
+
+#include "spandsp.h"
+
+#include "ip_network_model.h"
+
+#define SAMPLES_PER_CHUNK       160
+
+#define INPUT_FILE_NAME         "../itutests/fax/itutests.tif"
+#define OUTPUT_FILE_NAME        "t38.tif"
+#define OUTPUT_FILE_NAME_WAVE   "t38_gateway_to_terminal.wav"
+
+fax_state_t fax_state_a;
+t38_gateway_state_t t38_state_a;
+t38_terminal_state_t t38_state_b;
+
+ip_network_model_state_t *path_a_to_b;
+ip_network_model_state_t *path_b_to_a;
+
+int done[2] = {FALSE, FALSE};
+int succeeded[2] = {FALSE, FALSE};
+
+static void phase_b_handler(t30_state_t *s, void *user_data, int result)
+{
+    int i;
+    
+    i = (int) (intptr_t) user_data;
+    printf("%c: Phase B handler on channel %c - (0x%X) %s\n", i, i, result, t30_frametype(result));
+}
+/*- End of function --------------------------------------------------------*/
+
+static void phase_d_handler(t30_state_t *s, void *user_data, int result)
+{
+    int i;
+    t30_stats_t t;
+    char ident[21];
+
+    i = (int) (intptr_t) user_data;
+    printf("%c: Phase D handler on channel %c - (0x%X) %s\n", i, i, result, t30_frametype(result));
+    t30_get_transfer_statistics(s, &t);
+    printf("%c: Phase D: bit rate %d\n", i, t.bit_rate);
+    printf("%c: Phase D: ECM %s\n", i, (t.error_correcting_mode)  ?  "on"  :  "off");
+    printf("%c: Phase D: pages transferred %d\n", i, t.pages_transferred);
+    printf("%c: Phase D: image size %d x %d\n", i, t.width, t.length);
+    printf("%c: Phase D: image resolution %d x %d\n", i, t.x_resolution, t.y_resolution);
+    printf("%c: Phase D: bad rows %d\n", i, t.bad_rows);
+    printf("%c: Phase D: longest bad row run %d\n", i, t.longest_bad_row_run);
+    printf("%c: Phase D: coding method %s\n", i, t4_encoding_to_str(t.encoding));
+    printf("%c: Phase D: image size %d\n", i, t.image_size);
+    t30_get_local_ident(s, ident);
+    printf("%c: Phase D: local ident '%s'\n", i, ident);
+    t30_get_far_ident(s, ident);
+    printf("%c: Phase D: remote ident '%s'\n", i, ident);
+}
+/*- End of function --------------------------------------------------------*/
+
+static void phase_e_handler(t30_state_t *s, void *user_data, int result)
+{
+    int i;
+    t30_stats_t t;
+    char ident[21];
+    
+    i = (int) (intptr_t) user_data;
+    printf("%c: Phase E handler on channel %c - (%d) %s\n", i, i, result, t30_completion_code_to_str(result));
+    t30_get_transfer_statistics(s, &t);
+    printf("%c: Phase E: bit rate %d\n", i, t.bit_rate);
+    printf("%c: Phase E: ECM %s\n", i, (t.error_correcting_mode)  ?  "on"  :  "off");
+    printf("%c: Phase E: pages transferred %d\n", i, t.pages_transferred);
+    printf("%c: Phase E: image size %d x %d\n", i, t.width, t.length);
+    printf("%c: Phase E: image resolution %d x %d\n", i, t.x_resolution, t.y_resolution);
+    printf("%c: Phase E: bad rows %d\n", i, t.bad_rows);
+    printf("%c: Phase E: longest bad row run %d\n", i, t.longest_bad_row_run);
+    printf("%c: Phase E: coding method %s\n", i, t4_encoding_to_str(t.encoding));
+    printf("%c: Phase E: image size %d bytes\n", i, t.image_size);
+    t30_get_local_ident(s, ident);
+    printf("%c: Phase E: local ident '%s'\n", i, ident);
+    t30_get_far_ident(s, ident);
+    printf("%c: Phase E: remote ident '%s'\n", i, ident);
+    succeeded[i - 'A'] = (result == T30_ERR_OK)  &&  (t.pages_transferred == 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;
+
+    /* 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);
+
+    ip_network_model_send(path_a_to_b, s->tx_seq_no, count, buf, len);
+    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_gateway_state_t *t;
+
+    /* This routine queues messages between two instances of T.38 processing */
+    t = (t38_gateway_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);
+
+    ip_network_model_send(path_b_to_a, s->tx_seq_no, count, buf, len);
+    return 0;
+}
+/*- End of function --------------------------------------------------------*/
+
+int main(int argc, char *argv[])
+{
+    int16_t t38_amp_a[SAMPLES_PER_CHUNK];
+    int16_t t30_amp_a[SAMPLES_PER_CHUNK];
+    int16_t out_amp[2*SAMPLES_PER_CHUNK];
+    int t38_len_a;
+    int t30_len_a;
+    int msg_len;
+    uint8_t msg[1024];
+    int log_audio;
+    int outframes;
+    int t38_version;
+    int use_ecm;
+    AFfilesetup filesetup;
+    AFfilehandle wave_handle;
+    const char *input_file_name;
+    int i;
+    int seq_no;
+
+    log_audio = FALSE;
+    t38_version = 1;
+    use_ecm = FALSE;
+    input_file_name = INPUT_FILE_NAME;
+    for (i = 1;  i < argc;  i++)
+    {
+        if (strcmp(argv[i], "-e") == 0)
+        {
+            use_ecm = TRUE;
+            continue;
+        }
+        if (strcmp(argv[i], "-i") == 0)
+        {
+            i++;
+            input_file_name = argv[i];
+            continue;
+        }
+        if (strcmp(argv[i], "-l") == 0)
+        {
+            log_audio = TRUE;
+            continue;
+        }
+        if (strcmp(argv[i], "-v") == 0)
+        {
+            i++;
+            t38_version = atoi(argv[i]);
+            continue;
+        }
+    }
+
+    printf("Using T.38 version %d\n", t38_version);
+    if (use_ecm)
+        printf("Using ECM\n");
+
+    filesetup = AF_NULL_FILESETUP;
+    wave_handle = AF_NULL_FILEHANDLE;
+    if (log_audio)
+    {
+        if ((filesetup = afNewFileSetup()) == AF_NULL_FILESETUP)
+        {
+            fprintf(stderr, "    Failed to create file setup\n");
+            exit(2);
+        }
+        afInitSampleFormat(filesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
+        afInitRate(filesetup, AF_DEFAULT_TRACK, (float) SAMPLE_RATE);
+        afInitFileFormat(filesetup, AF_FILE_WAVE);
+        afInitChannels(filesetup, AF_DEFAULT_TRACK, 2);
+
+        wave_handle = afOpenFile(OUTPUT_FILE_NAME_WAVE, "w", filesetup);
+        if (wave_handle == AF_NULL_FILEHANDLE)
+        {
+            fprintf(stderr, "    Cannot create wave file '%s'\n", OUTPUT_FILE_NAME_WAVE);
+            exit(2);
+        }
+    }
+
+    if ((path_a_to_b = ip_network_model_init(800, 2000, 0)) == NULL)
+    {
+        fprintf(stderr, "Failed to start IP network path model\n");
+        exit(2);
+    }
+    if ((path_b_to_a = ip_network_model_init(800, 2000, 0)) == NULL)
+    {
+        fprintf(stderr, "Failed to start IP network path model\n");
+        exit(2);
+    }
+
+    fax_init(&fax_state_a, TRUE);
+    t30_set_local_ident(&fax_state_a.t30_state, "11111111");
+    t30_set_tx_file(&fax_state_a.t30_state, input_file_name, -1, -1);
+    t30_set_phase_b_handler(&fax_state_a.t30_state, phase_b_handler, (void *) (intptr_t) 'A');
+    t30_set_phase_d_handler(&fax_state_a.t30_state, phase_d_handler, (void *) (intptr_t) 'A');
+    t30_set_phase_e_handler(&fax_state_a.t30_state, phase_e_handler, (void *) (intptr_t) 'A');
+    t30_set_ecm_capability(&fax_state_a.t30_state, use_ecm);
+    if (use_ecm)
+        t30_set_supported_compressions(&fax_state_a.t30_state, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
+    span_log_set_level(&fax_state_a.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(&fax_state_a.logging, "FAX-A ");
+    span_log_set_level(&fax_state_a.t30_state.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(&fax_state_a.t30_state.logging, "FAX-A ");
+    memset(t30_amp_a, 0, sizeof(t30_amp_a));
+
+    if (t38_gateway_init(&t38_state_a, tx_packet_handler_a, &t38_state_b) == NULL)
+    {
+        fprintf(stderr, "Cannot start the T.38 channel\n");
+        exit(2);
+    }
+    t38_set_t38_version(&t38_state_a.t38, t38_version);
+    t38_gateway_ecm_control(&t38_state_a, use_ecm);
+    span_log_set_level(&t38_state_a.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(&t38_state_a.logging, "T.38-A");
+    span_log_set_level(&t38_state_a.t38.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(&t38_state_a.t38.logging, "T.38-A");
+    memset(t38_amp_a, 0, sizeof(t38_amp_a));
+
+    if (t38_terminal_init(&t38_state_b, FALSE, tx_packet_handler_b, &t38_state_a) == NULL)
+    {
+        fprintf(stderr, "Cannot start the T.38 channel\n");
+        exit(2);
+    }
+    t38_set_t38_version(&t38_state_b.t38, t38_version);
+    span_log_set_level(&t38_state_b.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(&t38_state_b.logging, "T.38-B");
+    span_log_set_level(&t38_state_b.t38.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(&t38_state_b.t38.logging, "T.38-B");
+    span_log_set_level(&t38_state_b.t30_state.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
+    span_log_set_tag(&t38_state_b.t30_state.logging, "T.38-B");
+
+    t30_set_local_ident(&t38_state_b.t30_state, "22222222");
+    t30_set_rx_file(&t38_state_b.t30_state, OUTPUT_FILE_NAME, -1);
+    t30_set_phase_b_handler(&t38_state_b.t30_state, phase_b_handler, (void *) (intptr_t) 'B');
+    t30_set_phase_d_handler(&t38_state_b.t30_state, phase_d_handler, (void *) (intptr_t) 'B');
+    t30_set_phase_e_handler(&t38_state_b.t30_state, phase_e_handler, (void *) (intptr_t) 'B');
+    t30_set_ecm_capability(&t38_state_b.t30_state, use_ecm);
+    if (use_ecm)
+        t30_set_supported_compressions(&t38_state_b.t30_state, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
+
+    for (;;)
+    {
+        span_log_bump_samples(&fax_state_a.logging, SAMPLES_PER_CHUNK);
+        span_log_bump_samples(&fax_state_a.t30_state.logging, SAMPLES_PER_CHUNK);
+        span_log_bump_samples(&t38_state_a.logging, SAMPLES_PER_CHUNK);
+        span_log_bump_samples(&t38_state_a.t38.logging, SAMPLES_PER_CHUNK);
+        span_log_bump_samples(&t38_state_b.logging, SAMPLES_PER_CHUNK);
+        span_log_bump_samples(&t38_state_b.t38.logging, SAMPLES_PER_CHUNK);
+        span_log_bump_samples(&t38_state_b.t30_state.logging, SAMPLES_PER_CHUNK);
+        memset(out_amp, 0, sizeof(out_amp));
+
+        t38_terminal_send_timeout(&t38_state_b, SAMPLES_PER_CHUNK);
+
+        t30_len_a = fax_tx(&fax_state_a, t30_amp_a, 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_a < SAMPLES_PER_CHUNK)
+        {
+            memset(t30_amp_a + t30_len_a, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t30_len_a));
+            t30_len_a = SAMPLES_PER_CHUNK;
+        }
+        if (log_audio)
+        {
+            for (i = 0;  i < t30_len_a;  i++)
+                out_amp[2*i] = t30_amp_a[i];
+        }
+        if (t38_gateway_rx(&t38_state_a, t30_amp_a, t30_len_a))
+            break;
+    
+        t38_len_a = t38_gateway_tx(&t38_state_a, t38_amp_a, SAMPLES_PER_CHUNK);
+        if (t38_len_a < SAMPLES_PER_CHUNK)
+        {
+            memset(t38_amp_a + t38_len_a, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t38_len_a));
+            t38_len_a = SAMPLES_PER_CHUNK;
+        }
+        if (log_audio)
+        {
+            for (i = 0;  i < t38_len_a;  i++)
+                out_amp[2*i + 1] = t38_amp_a[i];
+        }
+        if (fax_rx(&fax_state_a, t38_amp_a, SAMPLES_PER_CHUNK))
+            break;
+
+        while ((msg_len = ip_network_model_get(path_a_to_b, SAMPLES_PER_CHUNK, msg, 1024, &seq_no)) >= 0)
+            t38_core_rx_ifp_packet(&t38_state_b.t38, seq_no, msg, msg_len);
+        while ((msg_len = ip_network_model_get(path_b_to_a, SAMPLES_PER_CHUNK, msg, 1024, &seq_no)) >= 0)
+            t38_core_rx_ifp_packet(&t38_state_a.t38, seq_no, msg, msg_len);
+
+        if (log_audio)
+        {
+            outframes = afWriteFrames(wave_handle, AF_DEFAULT_TRACK, out_amp, SAMPLES_PER_CHUNK);
+            if (outframes != SAMPLES_PER_CHUNK)
+                break;
+        }
+
+        if (done[0]  &&  done[1])
+            break;
+    }
+    if (log_audio)
+    {
+        if (afCloseFile(wave_handle) != 0)
+        {
+            fprintf(stderr, "    Cannot close wave file '%s'\n", OUTPUT_FILE_NAME_WAVE);
+            exit(2);
+        }
+        afFreeFileSetup(filesetup);
+    }
+    if (!succeeded[0]  ||  !succeeded[1])
+    {
+        printf("Tests failed\n");
+        exit(2);
+    }
+    printf("Tests passed\n");
+    return  0;
+}
+/*- End of function --------------------------------------------------------*/
+/*- End of file ------------------------------------------------------------*/