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set tdm pre buffer len to 200ms by default, and set it to 0 before fax calls

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This commit is contained in:
Mathieu Rene
2012-08-14 16:22:31 -04:00
parent 76edb0b94e
commit bd84a23f51
4 changed files with 91 additions and 10 deletions
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libs/freetdm/mod_freetdm/tdm.c
+35 -2
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@@ -39,6 +39,7 @@ void ctdm_init(switch_loadable_module_interface_t *module_interface);
#define kSPAN_ID "span"
#define kCHAN_ID "chan"
#define kSPAN_NAME "span_name"
#define kPREBUFFER_LEN "prebuffer_len"
static struct {
switch_memory_pool_t *pool;
@@ -52,6 +53,7 @@ typedef struct {
switch_core_session_t *session;
switch_codec_t read_codec, write_codec;
switch_frame_t read_frame;
int prebuffer_len;
unsigned char databuf[SWITCH_RECOMMENDED_BUFFER_SIZE];
} ctdm_private_t;
@@ -66,6 +68,7 @@ static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *sessi
static switch_status_t channel_read_frame(switch_core_session_t *session, switch_frame_t **frame, switch_io_flag_t flags, int stream_id);
static switch_status_t channel_write_frame(switch_core_session_t *session, switch_frame_t *frame, switch_io_flag_t flags, int stream_id);
static switch_status_t channel_receive_message(switch_core_session_t *session, switch_core_session_message_t *msg);
static switch_status_t channel_receive_event(switch_core_session_t *session, switch_event_t *event);
static switch_status_t channel_send_dtmf(switch_core_session_t *session, const switch_dtmf_t *dtmf);
@@ -81,7 +84,8 @@ switch_io_routines_t ctdm_io_routines = {
.outgoing_channel = channel_outgoing_channel,
.read_frame = channel_read_frame,
.write_frame = channel_write_frame,
.receive_message = channel_receive_message
.receive_message = channel_receive_message,
.receive_event = channel_receive_event
};
static void ctdm_report_alarms(ftdm_channel_t *channel)
@@ -293,7 +297,8 @@ static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *sessi
switch_originate_flag_t flags, switch_call_cause_t *cancel_cause)
{
const char *szchanid = switch_event_get_header(var_event, kCHAN_ID),
*span_name = switch_event_get_header(var_event, kSPAN_NAME);
*span_name = switch_event_get_header(var_event, kSPAN_NAME),
*szprebuffer_len = switch_event_get_header(var_event, kPREBUFFER_LEN);
int chan_id;
int span_id;
switch_caller_profile_t *caller_profile;
@@ -341,6 +346,7 @@ static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *sessi
tech_pvt->session = *new_session;
tech_pvt->read_frame.buflen = sizeof(tech_pvt->databuf);
tech_pvt->read_frame.data = tech_pvt->databuf;
tech_pvt->prebuffer_len = zstr(szprebuffer_len) ? 0 : atoi(szprebuffer_len);
switch_core_session_set_private(*new_session, tech_pvt);
@@ -363,6 +369,11 @@ static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *sessi
return SWITCH_STATUS_GENERR;
}
if (FTDM_SUCCESS != ftdm_channel_command(chan, FTDM_COMMAND_SET_PRE_BUFFER_SIZE, &tech_pvt->prebuffer_len)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to set channel pre buffer size.\n");
return SWITCH_STATUS_GENERR;
}
switch(codec) {
case FTDM_CODEC_ULAW:
{
@@ -623,3 +634,25 @@ static switch_status_t channel_receive_message(switch_core_session_t *session, s
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_receive_event(switch_core_session_t *session, switch_event_t *event)
{
const char *command = switch_event_get_header(event, "command");
ctdm_private_t *tech_pvt = switch_core_session_get_private(session);
if (!zstr(command) && !strcasecmp(command, kPREBUFFER_LEN)) {
const char *szval = switch_event_get_header(event, kPREBUFFER_LEN);
int val = !zstr(szval) ? atoi(szval) : 0;
if (tech_pvt->prebuffer_len == val) {
tech_pvt->prebuffer_len = val;
if (FTDM_SUCCESS != ftdm_channel_command(tech_pvt->ftdm_channel, FTDM_COMMAND_SET_PRE_BUFFER_SIZE, &tech_pvt->prebuffer_len)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to set channel pre buffer size.\n");
return SWITCH_STATUS_GENERR;
}
}
}
return SWITCH_STATUS_SUCCESS;
}