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FAX now applies the T1 timer properly after mid call returns to phase B.

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This commit is contained in:
Steve Underwood
2016-02-12 13:37:32 +08:00
parent 05e80d4302
commit 2d46e0af01
4 changed files with 1507 additions and 1422 deletions
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libs/spandsp/src/t30.c
+60 -53
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@@ -439,9 +439,9 @@ static void start_final_pause(t30_state_t *s);
static void decode_20digit_msg(t30_state_t *s, char *msg, const uint8_t *pkt, int len);
static void decode_url_msg(t30_state_t *s, char *msg, const uint8_t *pkt, int len);
static int decode_nsf_nss_nsc(t30_state_t *s, uint8_t *msg[], const uint8_t *pkt, int len);
static void set_min_scan_time(t30_state_t *s);
static int send_cfr_sequence(t30_state_t *s, int start);
static int build_dcs(t30_state_t *s);
static void set_min_scan_time(t30_state_t *s);
static void timer_t2_start(t30_state_t *s);
static void timer_t2_flagged_start(t30_state_t *s);
static void timer_t2_dropped_start(t30_state_t *s);
@@ -2521,6 +2521,9 @@ static void send_dcn(t30_state_t *s)
static void return_to_phase_b(t30_state_t *s, int with_fallback)
{
/* This is what we do after things like T30_EOM is exchanged. */
span_log(&s->logging, SPAN_LOG_PROTOCOL_WARNING, "Returning to phase B\n");
/* Run the T1 timer, like we do on first detecting the far end. */
s->timer_t0_t1 = ms_to_samples(DEFAULT_TIMER_T1);
set_state(s, (s->calling_party) ? T30_STATE_T : T30_STATE_R);
}
/*- End of function --------------------------------------------------------*/
@@ -3143,6 +3146,58 @@ static int process_rx_dcs(t30_state_t *s, const uint8_t *msg, int len)
}
/*- End of function --------------------------------------------------------*/
static void assess_copy_quality(t30_state_t *s, uint8_t fcf)
{
int quality;
quality = copy_quality(s);
switch (quality)
{
case T30_COPY_QUALITY_PERFECT:
case T30_COPY_QUALITY_GOOD:
rx_end_page(s);
break;
case T30_COPY_QUALITY_POOR:
rx_end_page(s);
break;
case T30_COPY_QUALITY_BAD:
/* Some people want to keep even the bad pages */
if (s->keep_bad_pages)
rx_end_page(s);
/*endif*/
break;
}
/*endswitch*/
if (s->phase_d_handler)
s->phase_d_handler(s->phase_d_user_data, fcf);
/*endif*/
if (fcf == T30_EOP)
terminate_operation_in_progress(s);
else
rx_start_page(s);
/*endif*/
switch (quality)
{
case T30_COPY_QUALITY_PERFECT:
case T30_COPY_QUALITY_GOOD:
s->last_rx_page_result = T30_MCF;
break;
case T30_COPY_QUALITY_POOR:
s->last_rx_page_result = T30_RTP;
break;
case T30_COPY_QUALITY_BAD:
default:
s->last_rx_page_result = T30_RTN;
break;
}
/*endswitch*/
set_state(s, T30_STATE_III_Q);
send_simple_frame(s, s->last_rx_page_result);
}
/*- End of function --------------------------------------------------------*/
static int send_response_to_pps(t30_state_t *s)
{
queue_phase(s, T30_PHASE_D_TX);
@@ -3290,6 +3345,7 @@ static int process_rx_pps(t30_state_t *s, const uint8_t *msg, int len)
/* Use the length of the first frame as our model for what the length should be */
if (s->ecm_len[frame_no] == 64)
expected_len = 64;
/*endif*/
first = false;
}
/*endif*/
@@ -4083,58 +4139,6 @@ static void process_state_f_doc_non_ecm(t30_state_t *s, const uint8_t *msg, int
}
/*- End of function --------------------------------------------------------*/
static void assess_copy_quality(t30_state_t *s, uint8_t fcf)
{
int quality;
quality = copy_quality(s);
switch (quality)
{
case T30_COPY_QUALITY_PERFECT:
case T30_COPY_QUALITY_GOOD:
rx_end_page(s);
break;
case T30_COPY_QUALITY_POOR:
rx_end_page(s);
break;
case T30_COPY_QUALITY_BAD:
/* Some people want to keep even the bad pages */
if (s->keep_bad_pages)
rx_end_page(s);
/*endif*/
break;
}
/*endswitch*/
if (s->phase_d_handler)
s->phase_d_handler(s->phase_d_user_data, fcf);
/*endif*/
if (fcf == T30_EOP)
terminate_operation_in_progress(s);
else
rx_start_page(s);
/*endif*/
switch (quality)
{
case T30_COPY_QUALITY_PERFECT:
case T30_COPY_QUALITY_GOOD:
s->last_rx_page_result = T30_MCF;
break;
case T30_COPY_QUALITY_POOR:
s->last_rx_page_result = T30_RTP;
break;
case T30_COPY_QUALITY_BAD:
default:
s->last_rx_page_result = T30_RTN;
break;
}
/*endswitch*/
set_state(s, T30_STATE_III_Q);
send_simple_frame(s, s->last_rx_page_result);
}
/*- End of function --------------------------------------------------------*/
static void process_state_f_post_doc_non_ecm(t30_state_t *s, const uint8_t *msg, int len)
{
uint8_t fcf;
@@ -4725,6 +4729,7 @@ static void process_state_ii_q(t30_state_t *s, const uint8_t *msg, int len)
t30_set_status(s, T30_ERR_TX_BADPG);
break;
}
/*endswitch*/
terminate_call(s);
break;
case T30_CRP:
@@ -6088,6 +6093,8 @@ static void timer_t2_expired(t30_state_t *s)
/* We didn't receive a response to our T30_MCF after T30_EOM, so we must be OK
to proceed to phase B, and pretty much act like its the beginning of a call. */
span_log(&s->logging, SPAN_LOG_FLOW, "Returning to phase B after %s\n", t30_frametype(s->next_rx_step));
/* Run the T1 timer, like we do on first detecting the far end. */
s->timer_t0_t1 = ms_to_samples(DEFAULT_TIMER_T1);
s->dis_received = false;
set_phase(s, T30_PHASE_B_TX);
timer_t2_start(s);