Exemplo n.º 1
0
static void exchange(faxtester_state_t *s)
{
    int16_t amp[SAMPLES_PER_CHUNK];
    int16_t out_amp[2*SAMPLES_PER_CHUNK];
    int len;
    int i;
    int total_audio_time;
    logging_state_t *logging;

    output_tiff_file_name = OUTPUT_TIFF_FILE_NAME;

    if (log_audio)
    {
        if ((out_handle = sf_open_telephony_write(OUTPUT_WAVE_FILE_NAME, 2)) == NULL)
        {
            fprintf(stderr, "    Cannot create audio file '%s'\n", OUTPUT_WAVE_FILE_NAME);
            printf("Test failed\n");
            exit(2);
        }
        /*endif*/
    }
    /*endif*/

    total_audio_time = 0;

    faxtester_set_transmit_on_idle(s, true);

    s->far_fax = fax_init(NULL, false);
    s->far_t30 = fax_get_t30_state(s->far_fax);
    s->far_tag = 'A';

    if (s->far_fax)
        logging = fax_get_logging_state(s->far_fax);
    else
        logging = t38_terminal_get_logging_state(s->far_t38);
    span_log_set_level(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(logging, "A");

    logging = t30_get_logging_state(s->far_t30);
    span_log_set_level(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(logging, "A");

#if 0
    span_log_set_level(&fax.modems.v27ter_rx.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(&fax.modems.v27ter_rx.logging, "A");
    span_log_set_level(&fax.modems.v29_rx.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(&fax.modems.v29_rx.logging, "A");
    span_log_set_level(&fax.modems.v17_rx.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(&fax.modems.v17_rx.logging, "A");
#endif
    while (faxtester_next_step(s) == 0)
        ;
    /*endwhile*/
    for (;;)
    {
        len = fax_tx(s->far_fax, amp, SAMPLES_PER_CHUNK);
        faxtester_rx(s, amp, len);
        if (log_audio)
        {
            for (i = 0;  i < len;  i++)
                out_amp[2*i + 0] = amp[i];
            /*endfor*/
        }
        /*endif*/

        total_audio_time += SAMPLES_PER_CHUNK;

        logging = t30_get_logging_state(s->far_t30);
        span_log_bump_samples(logging, len);
#if 0
        span_log_bump_samples(&fax.modems.v27ter_rx.logging, len);
        span_log_bump_samples(&fax.modems.v29_rx.logging, len);
        span_log_bump_samples(&fax.modems.v17_rx.logging, len);
#endif
        logging = fax_get_logging_state(s->far_fax);
        span_log_bump_samples(logging, len);

        logging = faxtester_get_logging_state(s);
        span_log_bump_samples(logging, len);

        len = faxtester_tx(s, amp, SAMPLES_PER_CHUNK);
        if (fax_rx(s->far_fax, amp, len))
            break;
        /*endif*/
        if (log_audio)
        {
            for (i = 0;  i < len;  i++)
                out_amp[2*i + 1] = amp[i];
            /*endfor*/
            if (sf_writef_short(out_handle, out_amp, SAMPLES_PER_CHUNK) != SAMPLES_PER_CHUNK)
                break;
            /*endif*/
        }
        /*endif*/
        if (s->test_for_call_clear  &&  !s->far_end_cleared_call)
        {
            s->call_clear_timer += len;
            if (!t30_call_active(s->far_t30))
            {
                span_log(faxtester_get_logging_state(s), SPAN_LOG_FLOW, "Far end cleared after %dms (limits %dms to %dms)\n", s->call_clear_timer/8, s->timein_x, s->timeout);
                if (s->call_clear_timer/8 < s->timein_x  ||  s->call_clear_timer/8 > s->timeout_x)
                {
                    printf("Test failed\n");
                    exit(2);
                }
                span_log(faxtester_get_logging_state(s), SPAN_LOG_FLOW, "Clear time OK\n");
                s->far_end_cleared_call = true;
                s->test_for_call_clear = false;
                while (faxtester_next_step(s) == 0)
                    ;
                /*endwhile*/
            }
            /*endif*/
        }
        /*endif*/
    }
    /*endfor*/
    if (log_audio)
    {
        if (sf_close_telephony(out_handle))
        {
            fprintf(stderr, "    Cannot close audio file '%s'\n", OUTPUT_WAVE_FILE_NAME);
            printf("Test failed\n");
            exit(2);
        }
        /*endif*/
    }
    /*endif*/
}
Exemplo n.º 2
0
static int fax_audio(struct cw_channel *chan, fax_state_t *fax, const char *file, int calling_party, int verbose)
{
    char *x;
    struct cw_frame *inf = NULL;
    struct cw_frame outf;
    int ready = 1;
    int samples = 0;
    int res = 0;
    int len = 0;
    int generator_mode = 0;
    uint64_t begin = 0;
    uint64_t received_frames = 0;
    uint8_t __buf[sizeof(uint16_t)*MAX_BLOCK_SIZE + 2*CW_FRIENDLY_OFFSET];
    uint8_t *buf = __buf + CW_FRIENDLY_OFFSET;
#if 0
    struct cw_frame *dspf = NULL;
    struct cw_dsp *dsp = NULL;
#endif
    uint64_t voice_frames;
    t30_state_t *t30;

    memset(fax, 0, sizeof(*fax));
    if (fax_init(fax, calling_party) == NULL)
    {
        cw_log(LOG_WARNING, "Unable to start FAX\n");
        return -1;
    }
    t30 = fax_get_t30_state(fax);
    fax_set_transmit_on_idle(fax, TRUE);
    span_log_set_message_handler(&fax->logging, span_message);
    span_log_set_message_handler(&t30->logging, span_message);
    if (verbose)
    {
        span_log_set_level(&fax->logging, SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_FLOW);
        span_log_set_level(&t30->logging, SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_FLOW);
    }

    fax_set_common(chan, t30, file, calling_party, verbose);
    fax_set_transmit_on_idle(fax, TRUE);

    if (calling_party)
    {
        voice_frames = 0;
    }
    else
    {
#if 0
        /* Initializing the DSP */
        if ((dsp = cw_dsp_new()) == NULL)
        {
            cw_log(LOG_WARNING, "Unable to allocate DSP!\n");
        }
        else
        {
            cw_dsp_set_threshold(dsp, 256); 
            cw_dsp_set_features(dsp, DSP_FEATURE_DTMF_DETECT | DSP_FEATURE_FAX_CNG_DETECT);
            cw_dsp_digitmode(dsp, DSP_DIGITMODE_DTMF | DSP_DIGITMODE_RELAXDTMF);
        }
#endif
        voice_frames = 1;
    }

    /* This is the main loop */
    begin = nowis();
    while (ready  &&  ready_to_talk(chan))
    {
        if (chan->t38_status == T38_NEGOTIATED)
            break;

        if ((res = cw_waitfor(chan, 20)) < 0)
        {
            ready = 0;
            break;
        }

        if (!t30_call_active(t30))
            break;

        if ((inf = cw_read(chan)) == NULL)
        {
            ready = 0;
            break;
        }

        /* We got a frame */
        if (inf->frametype == CW_FRAME_VOICE)
        {
#if 0
            if (dsp)
            {
                if ((dspf = cw_frdup(inf)))
                    dspf = cw_dsp_process(chan, dsp, dspf);

                if (dspf)
                {
                    if (dspf->frametype == CW_FRAME_DTMF)
                    {
                        if (dspf->subclass == 'f')
                        {
                            cw_log(LOG_DEBUG, "Fax detected in RxFax !!!\n");
                            cw_app_request_t38(chan);
                            /* Prevent any further attempts to negotiate T.38 */
                            cw_dsp_free(dsp);
                            dsp = NULL;
                    
                        }
                    }
                    cw_fr_free(dspf);
                    dspf = NULL;
                }
            }
#else
            if (voice_frames)
            {
                /* Wait a little before trying to switch to T.38, as some things don't seem
                   to like entirely missing the audio. */
                if (++voice_frames == 100)
                {
                    cw_log(LOG_DEBUG, "Requesting T.38 negotation in RxFax !!!\n");
                    cw_app_request_t38(chan);
                    voice_frames = 0;
                }
            }
#endif
            received_frames++;

            if (fax_rx(fax, inf->data, inf->samples))
                break;

            samples = (inf->samples <= MAX_BLOCK_SIZE)  ?  inf->samples  :  MAX_BLOCK_SIZE;
            if ((len = fax_tx(fax, (int16_t *) &buf[CW_FRIENDLY_OFFSET], samples)) > 0)
            {
                cw_fr_init_ex(&outf, CW_FRAME_VOICE, CW_FORMAT_SLINEAR, "FAX");
                outf.datalen = len*sizeof(int16_t);
                outf.samples = len;
                outf.data = &buf[CW_FRIENDLY_OFFSET];
                outf.offset = CW_FRIENDLY_OFFSET;

                if (cw_write(chan, &outf) < 0)
                {
                    cw_log(LOG_WARNING, "Unable to write frame to channel; %s\n", strerror(errno));
                    break;
                }
            }
        }
        else
        {
            if ((nowis() - begin) > 1000000)
            {
                if (received_frames < 20)
                {
                    /* Just to be sure we have had no frames ... */
                    cw_log(LOG_NOTICE, "Switching to generator mode\n");
                    generator_mode = 1;
                    break;
                }
            }
        }
        cw_fr_free(inf);
        inf = NULL;
    }

    if (inf)
    {
        cw_fr_free(inf);
        inf = NULL;
    }
    if (generator_mode)
    {
        /* This is activated when we don't receive any frame for X seconds (see above)... */
        cw_log(LOG_NOTICE, "Starting generator\n");
#if 0
        if (dsp)
            cw_dsp_reset(dsp);
#endif
        cw_generator_activate(chan, &faxgen, fax);

        while (ready  &&  ready_to_talk(chan))
        {
            if (chan->t38_status == T38_NEGOTIATED)
                break;

            if ((res = cw_waitfor(chan, 20)) < 0)
            {
                ready = 0;
                break;
            }

            if (!t30_call_active(t30))
                break;

            if ((inf = cw_read(chan)) == NULL)
            {
                ready = 0;
                break;
            }

            /* We got a frame */
            if (inf->frametype == CW_FRAME_VOICE)
            {
#if 0
                if (dsp)
                {
                    if ((dspf = cw_frdup(inf)))
                        dspf = cw_dsp_process(chan, dsp, dspf);

                    if (dspf)
                    {
                        if (dspf->frametype == CW_FRAME_DTMF)
                        {
                            if (dspf->subclass == 'f')
                            {
                                cw_log(LOG_DEBUG, "Fax detected in RxFax !!!\n");
                                cw_app_request_t38(chan);
                                /* Prevent any further attempts to negotiate T.38 */
                                cw_dsp_free(dsp);
                                dsp = NULL;
                            }
                        }
                        cw_fr_free(dspf);
                        dspf = NULL;
                    }
                }
#else
                if (voice_frames)
                {
                    if (++voice_frames == 100)
                    {
                        cw_log(LOG_DEBUG, "Requesting T.38 negotation in RxFax !!!\n");
                        cw_app_request_t38(chan);
                        voice_frames = 0;
                    }
                }
#endif
                if (fax_rx(fax, inf->data, inf->samples))
                {
                    ready = 0;
                    break;
                }
            }

            cw_fr_free(inf);
            inf = NULL;
        }

        if (inf)
        {
            cw_fr_free(inf);
            inf = NULL;
        }
        cw_log(LOG_NOTICE, "Stopping generator\n");
        cw_generator_deactivate(chan);
    }
#if 0
    if (dsp)
        cw_dsp_free(dsp);
#endif
    return ready;
}
Exemplo n.º 3
0
int main(int argc, char *argv[])
{
    int16_t silence[SAMPLES_PER_CHUNK];
    int16_t t30_amp[2][SAMPLES_PER_CHUNK];
    int16_t t38_amp[2][SAMPLES_PER_CHUNK];
    int16_t t38_amp_hist_a[8][SAMPLES_PER_CHUNK];
    int16_t t38_amp_hist_b[8][SAMPLES_PER_CHUNK];
    int16_t out_amp[SAMPLES_PER_CHUNK*4];
    int16_t *fax_rx_buf[2];
    int16_t *fax_tx_buf[2];
    int16_t *t38_gateway_rx_buf[2];
    int16_t *t38_gateway_tx_buf[2];
    int t30_len[2];
    int t38_len[2];
    int hist_ptr;
    int log_audio;
    int msg_len;
    uint8_t msg[1024];
    int outframes;
    SNDFILE *wave_handle;
    SNDFILE *input_wave_handle;
    int use_ecm;
    int use_tep;
    int feedback_audio;
    int use_transmit_on_idle;
    int t38_version;
    const char *input_tiff_file_name;
    const char *decode_file_name;
    int i;
    int j;
    int seq_no;
    int g1050_model_no;
    int g1050_speed_pattern_no;
    int t38_transport;
    double tx_when;
    double rx_when;
    int supported_modems;
    int remove_fill_bits;
    int opt;
    int start_page;
    int end_page;
    int drop_frame;
    int drop_frame_rate;
    float signal_scaling;
    int signal_level;
    int noise_level;
    int code_to_look_up;
    int scan_line_time;
    t38_stats_t t38_stats;
    t30_stats_t t30_stats;
    logging_state_t *logging;
    int expected_pages;
    char *page_header_info;
    char *page_header_tz;
    const char *tag;
    char buf[132 + 1];
#if defined(ENABLE_GUI)
    int use_gui;
#endif

#if defined(ENABLE_GUI)
    use_gui = FALSE;
#endif
    log_audio = FALSE;
    use_ecm = FALSE;
    t38_version = 1;
    input_tiff_file_name = INPUT_TIFF_FILE_NAME;
    t38_simulate_incrementing_repeats = FALSE;
    g1050_model_no = 0;
    g1050_speed_pattern_no = 1;
    remove_fill_bits = FALSE;
    use_tep = FALSE;
    feedback_audio = FALSE;
    use_transmit_on_idle = TRUE;
    supported_modems = T30_SUPPORT_V27TER | T30_SUPPORT_V29 | T30_SUPPORT_V17;
    page_header_info = NULL;
    page_header_tz = NULL;
    drop_frame = 0;
    drop_frame_rate = 0;
    start_page = -1;
    end_page = -1;
    signal_level = 0;
    noise_level = -99;
    scan_line_time = 0;
    decode_file_name = NULL;
    code_to_look_up = -1;
    t38_transport = T38_TRANSPORT_UDPTL;
    while ((opt = getopt(argc, argv, "c:d:D:efFgH:i:Ilm:M:n:p:s:tT:u:v:z:")) != -1)
    {
        switch (opt)
        {
        case 'c':
            code_to_look_up = atoi(optarg);
            break;
        case 'd':
            decode_file_name = optarg;
            break;
        case 'D':
            drop_frame_rate =
            drop_frame = atoi(optarg);
            break;
        case 'e':
            use_ecm = TRUE;
            break;
        case 'f':
            feedback_audio = TRUE;
            break;
        case 'F':
            remove_fill_bits = TRUE;
            break;
        case 'g':
#if defined(ENABLE_GUI)
            use_gui = TRUE;
#else
            fprintf(stderr, "Graphical monitoring not available\n");
            exit(2);
#endif
            break;
        case 'H':
            page_header_info = optarg;
            break;
        case 'i':
            input_tiff_file_name = optarg;
            break;
        case 'I':
            t38_simulate_incrementing_repeats = TRUE;
            break;
        case 'l':
            log_audio = TRUE;
            break;
        case 'm':
            supported_modems = atoi(optarg);
            break;
        case 'M':
            g1050_model_no = optarg[0] - 'A' + 1;
            break;
        case 'n':
            noise_level = atoi(optarg);
            break;
        case 'p':
            for (i = 0;  i < 2;  i++)
            {
                switch (optarg[i])
                {
                case 'A':
                    mode[i] = AUDIO_FAX;
                    break;
                case 'G':
                    mode[i] = T38_GATEWAY_FAX;
                    break;
                case 'T':
                    mode[i] = T38_TERMINAL_FAX;
                    break;
                default:
                    fprintf(stderr, "Unknown FAX path element %c\n", optarg[i]);
                    exit(2);
                }
            }
            if ((mode[0] == AUDIO_FAX  &&  mode[1] != AUDIO_FAX)
                ||
                (mode[0] != AUDIO_FAX  &&  mode[1] == AUDIO_FAX))
            {
                fprintf(stderr, "Invalid FAX path %s\n", optarg);
                exit(2);
            }
            break;
        case 's':
            g1050_speed_pattern_no = atoi(optarg);
            break;
#if 0
        case 's':
            signal_level = atoi(optarg);
            break;
#endif
        case 'S':
            scan_line_time = atoi(optarg);
            break;
        case 't':
            use_tep = TRUE;
            break;
        case 'T':
            start_page = 0;
            end_page = atoi(optarg);
            break;
        case 'u':
            if (strcasecmp(optarg, "udptl") == 0)
                t38_transport = T38_TRANSPORT_UDPTL;
            else if (strcasecmp(optarg, "rtp") == 0)
                t38_transport = T38_TRANSPORT_RTP;
            else if (strcasecmp(optarg, "tcp") == 0)
                t38_transport = T38_TRANSPORT_TCP;
            else if (strcasecmp(optarg, "tcp-tpkt") == 0)
                t38_transport = T38_TRANSPORT_TCP_TPKT;
            else
            {
                fprintf(stderr, "Unknown T.38 transport mode\n");
                exit(2);
            }
            break;
        case 'v':
            t38_version = atoi(optarg);
            break;
        case 'z':
            page_header_tz = optarg;
            break;
        default:
            //usage();
            exit(2);
            break;
        }
    }

    if (code_to_look_up >= 0)
    {
        printf("Result code %d is %s\n", code_to_look_up, t30_completion_code_to_str(code_to_look_up));
        exit(0);
    }

    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_WAVE_FILE_NAME, 4)) == NULL)
        {
            fprintf(stderr, "    Cannot create audio file '%s'\n", OUTPUT_WAVE_FILE_NAME);
            exit(2);
        }
    }
    memset(silence, 0, sizeof(silence));
 
    srand48(0x1234567);
    /* Set up the nodes */
    input_wave_handle = NULL;
    if (mode[0] == T38_TERMINAL_FAX)
    {
    }
    else
    {
        if (decode_file_name)
        {
            if ((input_wave_handle = sf_open_telephony_read(decode_file_name, 1)) == NULL)
            {
                fprintf(stderr, "    Cannot open audio file '%s'\n", decode_file_name);
                exit(2);
            }
        }
    }

    for (i = 0;  i < 2;  i++)
    {
        tag = (i == 0)  ?  "A"  :  "B";

        memset(&expected_rx_info[i], 0, sizeof(expected_rx_info[i]));
        if (mode[i] == T38_TERMINAL_FAX)
        {
            if ((t38_state[i] = t38_terminal_init(NULL, (i == 0), tx_packet_handler, (void *) (intptr_t) i)) == NULL)
            {
                fprintf(stderr, "Cannot start the T.38 terminal instance\n");
                exit(2);
            }
            t30_state[i] = t38_terminal_get_t30_state(t38_state[i]);
            t38_core_state[i] = t38_terminal_get_t38_core_state(t38_state[i]);

            logging = t38_terminal_get_logging_state(t38_state[i]);
            span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
            span_log_set_tag(logging, tag);

            logging = t38_core_get_logging_state(t38_core_state[i]);
            span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
            span_log_set_tag(logging, tag);

            logging = t30_get_logging_state(t30_state[i]);
            span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
            span_log_set_tag(logging, tag);
        }
        else
        {
            if ((fax_state[i] = fax_init(NULL, (i == 0))) == NULL)
            {
                fprintf(stderr, "Cannot start FAX instance\n");
                exit(2);
            }
            t30_state[i] = fax_get_t30_state(fax_state[i]);

            logging = fax_get_logging_state(fax_state[i]);
            span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
            span_log_set_tag(logging, tag);

            logging = fax_modems_get_logging_state(&fax_state[i]->modems);
            span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
            span_log_set_tag(logging, tag);

            logging = t30_get_logging_state(t30_state[i]);
            span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
            span_log_set_tag(logging, tag);

            if (mode[i] == T38_GATEWAY_FAX)
            {
                if ((t38_gateway_state[i] = t38_gateway_init(NULL, tx_packet_handler, (void *) (intptr_t) i)) == NULL)
                {
                    fprintf(stderr, "Cannot start the T.38 gateway instancel\n");
                    exit(2);
                }
                t38_core_state[i] = t38_gateway_get_t38_core_state(t38_gateway_state[i]);

                logging = t38_gateway_get_logging_state(t38_gateway_state[i]);
                span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
                span_log_set_tag(logging, tag);

                logging = fax_modems_get_logging_state(&t38_gateway_state[i]->audio.modems);
                span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
                span_log_set_tag(logging, tag);

                logging = t38_core_get_logging_state(t38_core_state[i]);
                span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
                span_log_set_tag(logging, tag);

                fax_rx_buf[i] = t38_amp[i];
                fax_tx_buf[i] = t30_amp[i];
                t38_gateway_rx_buf[i] = t30_amp[i];
                t38_gateway_tx_buf[i] = t38_amp[i];
            }
            else
            {
                fax_rx_buf[i] = t30_amp[i];
                fax_tx_buf[i] = t30_amp[i ^ 1];
                t38_gateway_rx_buf[i] = NULL;
                t38_gateway_tx_buf[i] = NULL;
            }
            awgn_state[i] = NULL;
            signal_scaling = 1.0f;
            if (noise_level > -99)
            {
                awgn_state[i] = awgn_init_dbm0(NULL, 1234567, noise_level);
                signal_scaling = powf(10.0f, signal_level/20.0f);
                printf("Signal scaling %f\n", signal_scaling);
            }
        }
        set_t30_callbacks(t30_state[i], i);
    }
    /* Set up the channels */
    for (i = 0;  i < 2;  i++)
    {
        if ((g1050_path[i] = g1050_init(g1050_model_no, g1050_speed_pattern_no, 100, 33)) == NULL)
        {
            fprintf(stderr, "Failed to start IP network path model\n");
            exit(2);
        }
        memset(audio_buffer[2*i], 0, SAMPLES_PER_CHUNK*sizeof(int16_t));
        memset(audio_buffer[2*i + 1], 0, SAMPLES_PER_CHUNK*sizeof(int16_t));
        memset(t30_amp[i], 0, sizeof(t30_amp[i]));
        memset(t38_amp[i], 0, sizeof(t38_amp[i]));
    }
    memset(t38_amp_hist_a, 0, sizeof(t38_amp_hist_a));
    memset(t38_amp_hist_b, 0, sizeof(t38_amp_hist_b));

    for (i = 0;  i < 2;  i++)
    {
        j = i + 1;
        sprintf(buf, "%d%d%d%d%d%d%d%d", j, j, j, j, j, j, j, j);
        t30_set_tx_ident(t30_state[i], buf);
        strcpy(expected_rx_info[i ^ 1].ident, buf);
        sprintf(buf, "Sub-address %d", j);
        t30_set_tx_sub_address(t30_state[i], buf);
        //strcpy(expected_rx_info[i ^ 1].sub_address, buf);
        sprintf(buf, "Sender ID %d", j);
        t30_set_tx_sender_ident(t30_state[i], buf);
        //strcpy(expected_rx_info[i ^ 1].sender_ident, buf);
        sprintf(buf, "Password %d", j);
        t30_set_tx_password(t30_state[i], buf);
        //strcpy(expected_rx_info[i ^ 1].password, buf);
        sprintf(buf, "Polled sub-add %d", j);
        t30_set_tx_polled_sub_address(t30_state[i], buf);
        //strcpy(expected_rx_info[i ^ 1].polled_sub_address, buf);
        sprintf(buf, "Select poll add %d", j);
        t30_set_tx_selective_polling_address(t30_state[i], buf);
        //strcpy(expected_rx_info[i ^ 1].selective_polling_address, buf);
        t30_set_tx_page_header_info(t30_state[i], page_header_info);
        if (page_header_tz)
            t30_set_tx_page_header_tz(t30_state[i], page_header_tz);

        if ((i & 1) == 1)
        {
            t30_set_tx_nsf(t30_state[i], (const uint8_t *) "\x50\x00\x00\x00Spandsp\x00", 12);
            expected_rx_info[i ^ 1].nsf = (uint8_t *) "\x50\x00\x00\x00Spandsp\x00";
            expected_rx_info[i ^ 1].nsf_len = 12;
        }

        t30_set_supported_modems(t30_state[i], supported_modems);
        t30_set_supported_t30_features(t30_state[i],
                                       T30_SUPPORT_IDENTIFICATION
                                     | T30_SUPPORT_SELECTIVE_POLLING
                                     | T30_SUPPORT_SUB_ADDRESSING);
        t30_set_supported_image_sizes(t30_state[i],
                                      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(t30_state[i],
                                      T30_SUPPORT_STANDARD_RESOLUTION
                                    | T30_SUPPORT_FINE_RESOLUTION
                                    | T30_SUPPORT_SUPERFINE_RESOLUTION
                                    | T30_SUPPORT_R8_RESOLUTION
                                    | T30_SUPPORT_R16_RESOLUTION
                                    | T30_SUPPORT_300_300_RESOLUTION
                                    | T30_SUPPORT_400_400_RESOLUTION
                                    | T30_SUPPORT_600_600_RESOLUTION
                                    | T30_SUPPORT_1200_1200_RESOLUTION
                                    | T30_SUPPORT_300_600_RESOLUTION
                                    | T30_SUPPORT_400_800_RESOLUTION
                                    | T30_SUPPORT_600_1200_RESOLUTION);
        t30_set_ecm_capability(t30_state[i], use_ecm);
        if (use_ecm)
        {
            t30_set_supported_compressions(t30_state[i],
                                           T30_SUPPORT_T4_1D_COMPRESSION
                                         | T30_SUPPORT_T4_2D_COMPRESSION
                                         | T30_SUPPORT_T6_COMPRESSION
                                         | T30_SUPPORT_T81_COMPRESSION
                                         | T30_SUPPORT_T85_COMPRESSION
                                         | T30_SUPPORT_T85_L0_COMPRESSION);
        }
        else
        {
            t30_set_supported_compressions(t30_state[i],
                                           T30_SUPPORT_T4_1D_COMPRESSION
                                         | T30_SUPPORT_T4_2D_COMPRESSION);
        }
        t30_set_minimum_scan_line_time(t30_state[i], scan_line_time);

        if (mode[i] == T38_GATEWAY_FAX)
        {
            t38_gateway_set_transmit_on_idle(t38_gateway_state[i], use_transmit_on_idle);
            t38_gateway_set_supported_modems(t38_gateway_state[i], supported_modems);
            //t38_gateway_set_nsx_suppression(t38_state[i], NULL, 0, NULL, 0);
            t38_gateway_set_fill_bit_removal(t38_gateway_state[i], remove_fill_bits);
            t38_gateway_set_real_time_frame_handler(t38_gateway_state[i], real_time_gateway_frame_handler, (void *) (intptr_t) i);
            t38_gateway_set_ecm_capability(t38_gateway_state[i], use_ecm);
        }
        if (mode[i] != AUDIO_FAX)
        {
            t38_set_t38_version(t38_core_state[i], t38_version);
        }

        if (mode[i] == T38_TERMINAL_FAX)
        {
            //t30_set_iaf_mode(t30_state[i], T30_IAF_MODE_NO_FILL_BITS);
            switch (t38_transport)
            {
            case T38_TRANSPORT_UDPTL:
            case T38_TRANSPORT_RTP:
                t38_terminal_set_fill_bit_removal(t38_state[i], remove_fill_bits);
                t38_terminal_set_tep_mode(t38_state[i], use_tep);
                break;
            case T38_TRANSPORT_TCP:
            case T38_TRANSPORT_TCP_TPKT:
                t38_terminal_set_fill_bit_removal(t38_state[i], TRUE);
                t38_terminal_set_config(t38_state[i], T38_TERMINAL_OPTION_NO_PACING | T38_TERMINAL_OPTION_NO_INDICATORS);
                t38_terminal_set_tep_mode(t38_state[i], FALSE);
                break;
            }
        }
        else
        {
            fax_set_transmit_on_idle(fax_state[i], use_transmit_on_idle);
            fax_set_tep_mode(fax_state[i], use_tep);
        }
    }

    t30_set_tx_file(t30_state[0], input_tiff_file_name, start_page, end_page);
    t30_set_rx_file(t30_state[1], OUTPUT_TIFF_FILE_NAME, -1);

#if defined(ENABLE_GUI)
    if (use_gui)
        start_media_monitor();
#endif
    hist_ptr = 0;
    for (;;)
    {
        memset(out_amp, 0, sizeof(out_amp));

        for (i = 0;  i < 2;  i++)
        {
            /* Update T.30 timing */
            logging = t30_get_logging_state(t30_state[i]);
            span_log_bump_samples(logging, SAMPLES_PER_CHUNK);

            if (mode[i] == T38_TERMINAL_FAX)
            {
                /* Update T.38 termination timing */
                logging = t38_terminal_get_logging_state(t38_state[i]);
                span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
                logging = t38_core_get_logging_state(t38_core_state[i]);
                span_log_bump_samples(logging, SAMPLES_PER_CHUNK);

                completed[i] = t38_terminal_send_timeout(t38_state[i], SAMPLES_PER_CHUNK);
            }
            else
            {
                /* Update audio FAX timing */
                logging = fax_get_logging_state(fax_state[i]);
                span_log_bump_samples(logging, SAMPLES_PER_CHUNK);

                fax_rx(fax_state[i], fax_rx_buf[i], SAMPLES_PER_CHUNK);
                if (!t30_call_active(t30_state[i]))
                {
                    completed[i] = TRUE;
                    continue;
                }

                if (i == 0  &&  input_wave_handle)
                {
                    t30_len[i] = sf_readf_short(input_wave_handle, fax_tx_buf[i], SAMPLES_PER_CHUNK);
                    if (t30_len[i] == 0)
                        break;
                }
                else
                {
                    t30_len[i] = fax_tx(fax_state[i], fax_tx_buf[i], 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[i] < SAMPLES_PER_CHUNK)
                        {
                            memset(t30_amp[i] + t30_len[i], 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t30_len[i]));
                            t30_len[i] = SAMPLES_PER_CHUNK;
                        }
                    }
                    if (awgn_state[i])
                    {
                        for (j = 0;  j < t30_len[i];  j++)
                            fax_tx_buf[i][j] = ((int16_t) (fax_tx_buf[i][j]*signal_scaling)) + awgn(awgn_state[i]);
                    }
                }
                if (log_audio)
                {
                    for (j = 0;  j < t30_len[i];  j++)
                        out_amp[4*j + 2*i] = t30_amp[i][j];
                }
                if (feedback_audio)
                {
                    for (j = 0;  j < t30_len[i];  j++)
                        t30_amp[i][j] += t38_amp_hist_a[hist_ptr][j] >> 1;
                    memcpy(t38_amp_hist_a[hist_ptr], t38_amp[i], sizeof(int16_t)*SAMPLES_PER_CHUNK);
                }

                if (mode[i] == T38_GATEWAY_FAX)
                {
                    /* Update T.38 gateway timing */
                    logging = t38_gateway_get_logging_state(t38_gateway_state[i]);
                    span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
                    logging = t38_core_get_logging_state(t38_core_state[i]);
                    span_log_bump_samples(logging, SAMPLES_PER_CHUNK);

                    if (drop_frame_rate  &&  --drop_frame == 0)
                    {
                        drop_frame = drop_frame_rate;
                        if (t38_gateway_rx_fillin(t38_gateway_state[i], SAMPLES_PER_CHUNK))
                            break;
                    }
                    else
                    {
                        if (t38_gateway_rx(t38_gateway_state[i], t38_gateway_rx_buf[i], SAMPLES_PER_CHUNK))
                            break;
                    }

                    t38_len[i] = t38_gateway_tx(t38_gateway_state[i], t38_gateway_tx_buf[i], SAMPLES_PER_CHUNK);
                    if (!use_transmit_on_idle)
                    {
                        if (t38_len[i] < SAMPLES_PER_CHUNK)
                        {
                            memset(t38_amp[i] + t38_len[i], 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t38_len[i]));
                            t38_len[i] = SAMPLES_PER_CHUNK;
                        }
                    }
                    if (feedback_audio)
                    {
                        for (j = 0;  j < t30_len[i];  j++)
                            t30_amp[i][j] += t38_amp_hist_a[hist_ptr][j] >> 1;
                        memcpy(t38_amp_hist_a[hist_ptr], t38_amp[i], sizeof(int16_t)*SAMPLES_PER_CHUNK);
                    }

                    if (log_audio)
                    {
                        for (j = 0;  j < t38_len[i];  j++)
                            out_amp[4*j + 2*i + 1] = t38_amp[i][j];
                    }
                }
            }
            if (mode[i] != AUDIO_FAX)
            {
                while ((msg_len = g1050_get(g1050_path[i], 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_rx_ifp_packet(t38_core_state[i ^ 1], 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;
        }

        when += (float) SAMPLES_PER_CHUNK/(float) SAMPLE_RATE;

        if (completed[0]  &&  completed[1])
            break;
#if defined(ENABLE_GUI)
        if (use_gui)
            media_monitor_update_display();
#endif
        if (++hist_ptr > 3)
            hist_ptr = 0;
    }
Exemplo n.º 4
0
static int fax_t38(struct cw_channel *chan, t38_terminal_state_t *t38, const char *file, int calling_party, int verbose)
{
    char *x;
    struct cw_frame *inf = NULL;
    int ready = 1;
    int res = 0;
    uint64_t now;
    uint64_t passage;
    t30_state_t *t30;
    t38_core_state_t *t38_core;

    memset(t38, 0, sizeof(*t38));

    if (t38_terminal_init(t38, calling_party, t38_tx_packet_handler, chan) == NULL)
    {
        cw_log(LOG_WARNING, "Unable to start T.38 termination.\n");
        return -1;
    }
    t30 = t38_terminal_get_t30_state(t38);
    t38_core = t38_terminal_get_t38_core_state(t38);
    span_log_set_message_handler(&t38->logging, span_message);
    span_log_set_message_handler(&t30->logging, span_message);
    span_log_set_message_handler(&t38_core->logging, span_message);

    if (verbose)
    {
        span_log_set_level(&t38->logging, SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_FLOW);
        span_log_set_level(&t30->logging, SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_FLOW);
        span_log_set_level(&t38_core->logging, SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_FLOW);
    }

    fax_set_common(chan, t30, file, calling_party, verbose);

    passage = nowis();

    t38_terminal_set_tep_mode(t38, TRUE);
    while (ready  &&  ready_to_talk(chan))
    {
        if (chan->t38_status != T38_NEGOTIATED)
            break;

        if ((res = cw_waitfor(chan, 20)) < 0)
        {
            ready = 0;
            break;
        }

        now = nowis();
        t38_terminal_send_timeout(t38, (now - passage)/125);
        passage = now;
        /* End application when T38/T30 has finished */
        if (!t30_call_active(t30)) 
            break;

        if ((inf = cw_read(chan)) == NULL)
        {
            ready = 0;
            break;
        }

        if (inf->frametype == CW_FRAME_MODEM  &&  inf->subclass == CW_MODEM_T38)
            t38_core_rx_ifp_packet(t38_core, inf->data, inf->datalen, inf->seq_no);

        cw_fr_free(inf);
    }

    return ready;
}