--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spandsp-0.0.3/spandsp-0.0.3/tests/fax_tests.c	Fri Jun 25 16:00:21 2010 +0200
@@ -0,0 +1,434 @@
+/*
+ * SpanDSP - a series of DSP components for telephony
+ *
+ * fax_tests.c
+ *
+ * Written by Steve Underwood <steveu@coppice.org>
+ *
+ * Copyright (C) 2003 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: fax_tests.c,v 1.60 2006/11/19 14:07:27 steveu Exp $
+ */
+
+/*! \page fax_tests_page FAX tests
+\section fax_tests_page_sec_1 What does it do?
+\section fax_tests_page_sec_2 How does it work?
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include <stdio.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 <audiofile.h>
+#include <tiffio.h>
+
+#include "spandsp.h"
+
+#define SAMPLES_PER_CHUNK       160
+
+#define INPUT_TIFF_FILE_NAME    "../itutests/fax/itutests.tif"
+
+#define OUTPUT_FILE_NAME_WAVE   "fax_tests.wav"
+
+#define FAX_MACHINES            2
+
+struct machine_s
+{
+    int chan;
+    int16_t amp[SAMPLES_PER_CHUNK];
+    int len;
+    fax_state_t fax;
+    int done;
+    int succeeded;
+    char tag[50];
+    int error_delay;
+} machines[FAX_MACHINES];
+
+int test_local_interrupt = FALSE;
+
+static void phase_b_handler(t30_state_t *s, void *user_data, int result)
+{
+    int i;
+    
+    i = (intptr_t) user_data;
+    printf("%d: Phase B handler on channel %d - (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 = (intptr_t) user_data;
+    printf("%d: Phase D handler on channel %d - (0x%X) %s\n", i, i, result, t30_frametype(result));
+    t30_get_transfer_statistics(s, &t);
+    printf("%d: Phase D: bit rate %d\n", i, t.bit_rate);
+    printf("%d: Phase D: ECM %s\n", i, (t.error_correcting_mode)  ?  "on"  :  "off");
+    printf("%d: Phase D: pages transferred %d\n", i, t.pages_transferred);
+    printf("%d: Phase D: image size %d x %d\n", i, t.width, t.length);
+    printf("%d: Phase D: image resolution %d x %d\n", i, t.x_resolution, t.y_resolution);
+    printf("%d: Phase D: bad rows %d\n", i, t.bad_rows);
+    printf("%d: Phase D: longest bad row run %d\n", i, t.longest_bad_row_run);
+    printf("%d: Phase D: compression type %d\n", i, t.encoding);
+    printf("%d: Phase D: image size %d\n", i, t.image_size);
+    t30_get_local_ident(s, ident);
+    printf("%d: Phase D: local ident '%s'\n", i, ident);
+    t30_get_far_ident(s, ident);
+    printf("%d: Phase D: remote ident '%s'\n", i, ident);
+    
+    if (test_local_interrupt)
+    {
+        if (i == 0)
+        {
+            printf("%d: Initiating interrupt request\n", i);
+            t30_local_interrupt_request(s, TRUE);
+        }
+        else
+        {
+            switch (result)
+            {
+            case T30_PIP:
+            case T30_PRI_MPS:
+            case T30_PRI_EOM:
+            case T30_PRI_EOP:
+                printf("%d: Accepting interrupt request\n", i);
+                t30_local_interrupt_request(s, TRUE);
+                break;
+            case T30_PIN:
+                break;
+            }
+        }
+    }
+}
+/*- End of function --------------------------------------------------------*/
+
+static void phase_e_handler(t30_state_t *s, void *user_data, int result)
+{
+    int i;
+    t30_stats_t t;
+    const char *u;
+    char ident[21];
+    
+    i = (intptr_t) user_data;
+    printf("%d: Phase E handler on channel %d - (%d) %s\n", i, i, result, t30_completion_code_to_str(result));    
+    t30_get_transfer_statistics(s, &t);
+    printf("%d: Phase E: bit rate %d\n", i, t.bit_rate);
+    printf("%d: Phase E: ECM %s\n", i, (t.error_correcting_mode)  ?  "on"  :  "off");
+    printf("%d: Phase E: pages transferred %d\n", i, t.pages_transferred);
+    printf("%d: Phase E: image size %d x %d\n", i, t.width, t.length);
+    printf("%d: Phase E: image resolution %d x %d\n", i, t.x_resolution, t.y_resolution);
+    printf("%d: Phase E: bad rows %d\n", i, t.bad_rows);
+    printf("%d: Phase E: longest bad row run %d\n", i, t.longest_bad_row_run);
+    printf("%d: Phase E: coding method %s\n", i, t4_encoding_to_str(t.encoding));
+    printf("%d: Phase E: image size %d bytes\n", i, t.image_size);
+    t30_get_local_ident(s, ident);
+    printf("%d: Phase E: local ident '%s'\n", i, ident);
+    t30_get_far_ident(s, ident);
+    printf("%d: Phase E: remote ident '%s'\n", i, ident);
+    if ((u = t30_get_far_country(s)))
+        printf("%d: Phase E: Remote was made in '%s'\n", i, u);
+    if ((u = t30_get_far_vendor(s)))
+        printf("%d: Phase E: Remote was made by '%s'\n", i, u);
+    if ((u = t30_get_far_model(s)))
+        printf("%d: Phase E: Remote is model '%s'\n", i, u);
+    machines[i].succeeded = (result == T30_ERR_OK)  &&  (t.pages_transferred == 12);
+    machines[i].done = TRUE;
+}
+/*- End of function --------------------------------------------------------*/
+
+static int document_handler(t30_state_t *s, void *user_data, int event)
+{
+    int i;
+    
+    i = (intptr_t) user_data;
+    printf("%d: Document handler on channel %d - event %d\n", i, i, event);
+    return FALSE;
+}
+/*- End of function --------------------------------------------------------*/
+
+int main(int argc, char *argv[])
+{
+    AFfilesetup filesetup;
+    AFfilehandle wave_handle;
+    AFfilehandle input_wave_handle;
+    int i;
+    int j;
+    int k;
+    struct machine_s *mc;
+    int outframes;
+    char buf[128 + 1];
+    int16_t silence[SAMPLES_PER_CHUNK];
+    int16_t out_amp[2*SAMPLES_PER_CHUNK];
+    int alldone;
+    const char *input_tiff_file_name;
+    const char *input_audio_file_name;
+    int log_audio;
+    int use_ecm;
+    int use_tep;
+    int use_line_hits;
+    int polled_mode;
+    char *page_header_info;
+
+    log_audio = FALSE;
+    input_tiff_file_name = INPUT_TIFF_FILE_NAME;
+    input_audio_file_name = NULL;
+    use_ecm = FALSE;
+    use_line_hits = FALSE;
+    use_tep = FALSE;
+    polled_mode = FALSE;
+    page_header_info = NULL;
+    for (i = 1;  i < argc;  i++)
+    {
+        if (strcmp(argv[i], "-e") == 0)
+        {
+            use_ecm = TRUE;
+            continue;
+        }
+        if (strcmp(argv[i], "-h") == 0)
+        {
+            use_line_hits = TRUE;
+            continue;
+        }
+        if (strcmp(argv[i], "-H") == 0)
+        {
+            page_header_info = argv[++i];
+            continue;
+        }
+        if (strcmp(argv[i], "-i") == 0)
+        {
+            input_tiff_file_name = argv[++i];
+            continue;
+        }
+        if (strcmp(argv[i], "-I") == 0)
+        {
+            input_audio_file_name = argv[++i];
+            continue;
+        }
+        if (strcmp(argv[i], "-l") == 0)
+        {
+            log_audio = TRUE;
+            continue;
+        }
+        if (strcmp(argv[i], "-p") == 0)
+        {
+            polled_mode = TRUE;
+            continue;
+        }
+        if (strcmp(argv[i], "-t") == 0)
+        {
+            use_tep = TRUE;
+            continue;
+        }
+    }
+
+    input_wave_handle = AF_NULL_FILEHANDLE;
+    if (input_audio_file_name)
+    {
+        if ((input_wave_handle = afOpenFile(input_audio_file_name, "r", NULL)) == AF_NULL_FILEHANDLE)
+        {
+            fprintf(stderr, "    Cannot open wave file '%s'\n", input_audio_file_name);
+            exit(2);
+        }
+    }
+
+    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);
+
+        if ((wave_handle = afOpenFile(OUTPUT_FILE_NAME_WAVE, "w", filesetup)) == AF_NULL_FILEHANDLE)
+        {
+            fprintf(stderr, "    Cannot create wave file '%s'\n", OUTPUT_FILE_NAME_WAVE);
+            exit(2);
+        }
+    }
+
+    memset(silence, 0, sizeof(silence));
+    for (j = 0;  j < FAX_MACHINES;  j++)
+    {
+        machines[j].chan = j;
+        mc = &machines[j];
+
+        i = mc->chan + 1;
+        sprintf(buf, "%d%d%d%d%d%d%d%d", i, i, i, i, i, i, i, i);
+        fax_init(&mc->fax, (mc->chan & 1)  ?  FALSE  :  TRUE);
+        fax_set_tep_mode(&mc->fax, use_tep);
+        t30_set_local_ident(&mc->fax.t30_state, buf);
+        t30_set_header_info(&mc->fax.t30_state, page_header_info);
+        t30_set_local_nsf(&mc->fax.t30_state, (const uint8_t *) "\x50\x00\x00\x00Spandsp\x00", 12);
+        t30_set_ecm_capability(&mc->fax.t30_state, use_ecm);
+        t30_set_supported_image_sizes(&mc->fax.t30_state, T30_SUPPORT_US_LETTER_LENGTH | T30_SUPPORT_US_LEGAL_LENGTH | T30_SUPPORT_UNLIMITED_LENGTH
+                                                        | T30_SUPPORT_215MM_WIDTH | T30_SUPPORT_255MM_WIDTH | T30_SUPPORT_303MM_WIDTH);
+        t30_set_supported_resolutions(&mc->fax.t30_state, T30_SUPPORT_STANDARD_RESOLUTION | T30_SUPPORT_FINE_RESOLUTION | T30_SUPPORT_SUPERFINE_RESOLUTION
+                                                        | T30_SUPPORT_R8_RESOLUTION | T30_SUPPORT_R16_RESOLUTION);
+        if (use_ecm)
+            t30_set_supported_compressions(&mc->fax.t30_state, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
+        if ((mc->chan & 1))
+        {
+            if (polled_mode)
+            {
+                t30_set_tx_file(&mc->fax.t30_state, input_tiff_file_name, -1, -1);
+            }
+            else
+            {
+                sprintf(buf, "fax_tests_%d.tif", (mc->chan + 1)/2);
+                t30_set_rx_file(&mc->fax.t30_state, buf, -1);
+            }
+        }
+        else
+        {
+            if (polled_mode)
+            {
+                sprintf(buf, "fax_tests_%d.tif", (mc->chan + 1)/2);
+                t30_set_rx_file(&mc->fax.t30_state, buf, -1);
+            }
+            else
+            {
+                t30_set_tx_file(&mc->fax.t30_state, input_tiff_file_name, -1, -1);
+            }
+        }
+        t30_set_phase_b_handler(&mc->fax.t30_state, phase_b_handler, (void *) (intptr_t) mc->chan);
+        t30_set_phase_d_handler(&mc->fax.t30_state, phase_d_handler, (void *) (intptr_t) mc->chan);
+        t30_set_phase_e_handler(&mc->fax.t30_state, phase_e_handler, (void *) (intptr_t) mc->chan);
+        t30_set_document_handler(&mc->fax.t30_state, document_handler, (void *) (intptr_t) mc->chan);
+        sprintf(mc->tag, "FAX-%d", j + 1);
+        span_log_set_level(&mc->fax.t30_state.logging, SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME | SPAN_LOG_FLOW);
+        span_log_set_tag(&mc->fax.t30_state.logging, mc->tag);
+        span_log_set_level(&mc->fax.v29rx.logging, SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME | SPAN_LOG_FLOW);
+        span_log_set_tag(&mc->fax.v29rx.logging, mc->tag);
+        span_log_set_level(&mc->fax.logging, SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME | SPAN_LOG_FLOW);
+        span_log_set_tag(&mc->fax.logging, mc->tag);
+        memset(mc->amp, 0, sizeof(mc->amp));
+        mc->done = FALSE;
+    }
+    for (;;)
+    {
+        alldone = TRUE;
+        for (j = 0;  j < FAX_MACHINES;  j++)
+        {
+            mc = &machines[j];
+
+            if ((j & 1) == 0  &&  input_audio_file_name)
+            {
+                mc->len = afReadFrames(input_wave_handle, AF_DEFAULT_TRACK, mc->amp, SAMPLES_PER_CHUNK);
+                if (mc->len == 0)
+                    break;
+            }
+            else
+            {
+                mc->len = fax_tx(&mc->fax, mc->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 (mc->len < SAMPLES_PER_CHUNK)
+            {
+                memset(mc->amp + mc->len, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - mc->len));
+                mc->len = SAMPLES_PER_CHUNK;
+            }
+
+            span_log_bump_samples(&mc->fax.t30_state.logging, mc->len);
+            span_log_bump_samples(&mc->fax.v29rx.logging, mc->len);
+            span_log_bump_samples(&mc->fax.logging, mc->len);
+
+            if (log_audio)
+            {
+                for (k = 0;  k < mc->len;  k++)
+                    out_amp[2*k + j] = mc->amp[k];
+            }
+            if (machines[j ^ 1].len < SAMPLES_PER_CHUNK)
+                memset(machines[j ^ 1].amp + machines[j ^ 1].len, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - machines[j ^ 1].len));
+            if (use_line_hits)
+            {
+                /* TODO: This applied very crude line hits. improve it */
+                if (mc->fax.t30_state.state == 22)
+                {
+                    if (++mc->error_delay == 100)
+                    {
+                        fprintf(stderr, "HIT %d!\n", j);
+                        mc->error_delay = 0;
+                        for (k = 0;  k < 5;  k++)
+                            mc->amp[k] = 0;
+                    }
+                }    
+            }
+            if (fax_rx(&mc->fax, machines[j ^ 1].amp, SAMPLES_PER_CHUNK))
+                break;
+            if (!mc->done)
+                alldone = FALSE;
+        }
+
+        if (log_audio)
+        {
+            outframes = afWriteFrames(wave_handle, AF_DEFAULT_TRACK, out_amp, SAMPLES_PER_CHUNK);
+            if (outframes != SAMPLES_PER_CHUNK)
+                break;
+        }
+
+        if (alldone  ||  j < FAX_MACHINES)
+            break;
+    }
+    for (j = 0;  j < FAX_MACHINES;  j++)
+    {
+        mc = &machines[j];
+        fax_release(&mc->fax);
+    }
+    if (log_audio)
+    {
+        if (afCloseFile(wave_handle))
+        {
+            fprintf(stderr, "    Cannot close wave file '%s'\n", OUTPUT_FILE_NAME_WAVE);
+            exit(2);
+        }
+        afFreeFileSetup(filesetup);
+    }
+    if (input_audio_file_name)
+    {
+        if (afCloseFile(input_wave_handle))
+        {
+            fprintf(stderr, "    Cannot close wave file '%s'\n", input_audio_file_name);
+            exit(2);
+        }
+        afFreeFileSetup(filesetup);
+    }
+    return  0;
+}
+/*- End of function --------------------------------------------------------*/
+/*- End of file ------------------------------------------------------------*/